--- /dev/null
+/*
+ * Copyright (C) 2012, 2013
+ * Wolfgang Bumiller
+ * Dale Weiler
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <string.h>
+#include <math.h>
+
+#include "gmqcc.h"
+#include "lexer.h"
+#include "ast.h"
+
+/* beginning of locals */
+#define PARSER_HT_LOCALS 2
+
+#define PARSER_HT_SIZE 128
+#define TYPEDEF_HT_SIZE 16
+
+typedef struct parser_s {
+ lex_file *lex;
+ int tok;
+
+ bool ast_cleaned;
+
+ ast_expression **globals;
+ ast_expression **fields;
+ ast_function **functions;
+ ast_value **imm_float;
+ ast_value **imm_string;
+ ast_value **imm_vector;
+ size_t translated;
+
+ ht ht_imm_string;
+
+ /* must be deleted first, they reference immediates and values */
+ ast_value **accessors;
+
+ ast_value *imm_float_zero;
+ ast_value *imm_float_one;
+ ast_value *imm_float_neg_one;
+
+ ast_value *imm_vector_zero;
+
+ ast_value *nil;
+ ast_value *reserved_version;
+
+ size_t crc_globals;
+ size_t crc_fields;
+
+ ast_function *function;
+ ht aliases;
+
+ /* All the labels the function defined...
+ * Should they be in ast_function instead?
+ */
+ ast_label **labels;
+ ast_goto **gotos;
+ const char **breaks;
+ const char **continues;
+
+ /* A list of hashtables for each scope */
+ ht *variables;
+ ht htfields;
+ ht htglobals;
+ ht *typedefs;
+
+ /* same as above but for the spelling corrector */
+ correct_trie_t **correct_variables;
+ size_t ***correct_variables_score; /* vector of vector of size_t* */
+
+ /* not to be used directly, we use the hash table */
+ ast_expression **_locals;
+ size_t *_blocklocals;
+ ast_value **_typedefs;
+ size_t *_blocktypedefs;
+ lex_ctx *_block_ctx;
+
+ /* we store the '=' operator info */
+ const oper_info *assign_op;
+
+ /* magic values */
+ ast_value *const_vec[3];
+
+ /* pragma flags */
+ bool noref;
+
+ /* collected information */
+ size_t max_param_count;
+
+ /* code generator */
+ code_t *code;
+} parser_t;
+
+static ast_expression * const intrinsic_debug_typestring = (ast_expression*)0x1;
+
+static void parser_enterblock(parser_t *parser);
+static bool parser_leaveblock(parser_t *parser);
+static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e);
+static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e);
+static bool parse_typedef(parser_t *parser);
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring);
+static ast_block* parse_block(parser_t *parser);
+static bool parse_block_into(parser_t *parser, ast_block *block);
+static bool parse_statement_or_block(parser_t *parser, ast_expression **out);
+static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases);
+static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
+static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels);
+static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname);
+static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname);
+static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
+
+static void parseerror(parser_t *parser, const char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ vcompile_error(parser->lex->tok.ctx, fmt, ap);
+ va_end(ap);
+}
+
+/* returns true if it counts as an error */
+static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
+{
+ bool r;
+ va_list ap;
+ va_start(ap, fmt);
+ r = vcompile_warning(parser->lex->tok.ctx, warntype, fmt, ap);
+ va_end(ap);
+ return r;
+}
+
+/**********************************************************************
+ * some maths used for constant folding
+ */
+
+vector vec3_add(vector a, vector b)
+{
+ vector out;
+ out.x = a.x + b.x;
+ out.y = a.y + b.y;
+ out.z = a.z + b.z;
+ return out;
+}
+
+vector vec3_sub(vector a, vector b)
+{
+ vector out;
+ out.x = a.x - b.x;
+ out.y = a.y - b.y;
+ out.z = a.z - b.z;
+ return out;
+}
+
+qcfloat vec3_mulvv(vector a, vector b)
+{
+ return (a.x * b.x + a.y * b.y + a.z * b.z);
+}
+
+vector vec3_mulvf(vector a, float b)
+{
+ vector out;
+ out.x = a.x * b;
+ out.y = a.y * b;
+ out.z = a.z * b;
+ return out;
+}
+
+/**********************************************************************
+ * parsing
+ */
+
+static bool parser_next(parser_t *parser)
+{
+ /* lex_do kills the previous token */
+ parser->tok = lex_do(parser->lex);
+ if (parser->tok == TOKEN_EOF)
+ return true;
+ if (parser->tok >= TOKEN_ERROR) {
+ parseerror(parser, "lex error");
+ return false;
+ }
+ return true;
+}
+
+#define parser_tokval(p) ((p)->lex->tok.value)
+#define parser_token(p) (&((p)->lex->tok))
+#define parser_ctx(p) ((p)->lex->tok.ctx)
+
+static ast_value* parser_const_float(parser_t *parser, double d)
+{
+ size_t i;
+ ast_value *out;
+ lex_ctx ctx;
+ for (i = 0; i < vec_size(parser->imm_float); ++i) {
+ const double compare = parser->imm_float[i]->constval.vfloat;
+ if (memcmp((const void*)&compare, (const void *)&d, sizeof(double)) == 0)
+ return parser->imm_float[i];
+ }
+ if (parser->lex)
+ ctx = parser_ctx(parser);
+ else {
+ memset(&ctx, 0, sizeof(ctx));
+ }
+ out = ast_value_new(ctx, "#IMMEDIATE", TYPE_FLOAT);
+ out->cvq = CV_CONST;
+ out->hasvalue = true;
+ out->isimm = true;
+ out->constval.vfloat = d;
+ vec_push(parser->imm_float, out);
+ return out;
+}
+
+static ast_value* parser_const_float_0(parser_t *parser)
+{
+ if (!parser->imm_float_zero)
+ parser->imm_float_zero = parser_const_float(parser, 0);
+ return parser->imm_float_zero;
+}
+
+static ast_value* parser_const_float_neg1(parser_t *parser) {
+ if (!parser->imm_float_neg_one)
+ parser->imm_float_neg_one = parser_const_float(parser, -1);
+ return parser->imm_float_neg_one;
+}
+
+static ast_value* parser_const_float_1(parser_t *parser)
+{
+ if (!parser->imm_float_one)
+ parser->imm_float_one = parser_const_float(parser, 1);
+ return parser->imm_float_one;
+}
+
+static char *parser_strdup(const char *str)
+{
+ if (str && !*str) {
+ /* actually dup empty strings */
+ char *out = (char*)mem_a(1);
+ *out = 0;
+ return out;
+ }
+ return util_strdup(str);
+}
+
+static ast_value* parser_const_string(parser_t *parser, const char *str, bool dotranslate)
+{
+ size_t hash = util_hthash(parser->ht_imm_string, str);
+ ast_value *out;
+ if ( (out = (ast_value*)util_htgeth(parser->ht_imm_string, str, hash)) ) {
+ if (dotranslate && out->name[0] == '#') {
+ char name[32];
+ util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
+ ast_value_set_name(out, name);
+ out->expression.flags |= AST_FLAG_INCLUDE_DEF;
+ }
+ return out;
+ }
+ /*
+ for (i = 0; i < vec_size(parser->imm_string); ++i) {
+ if (!strcmp(parser->imm_string[i]->constval.vstring, str))
+ return parser->imm_string[i];
+ }
+ */
+ if (dotranslate) {
+ char name[32];
+ util_snprintf(name, sizeof(name), "dotranslate_%lu", (unsigned long)(parser->translated++));
+ out = ast_value_new(parser_ctx(parser), name, TYPE_STRING);
+ out->expression.flags |= AST_FLAG_INCLUDE_DEF;
+ } else
+ out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
+ out->cvq = CV_CONST;
+ out->hasvalue = true;
+ out->isimm = true;
+ out->constval.vstring = parser_strdup(str);
+ vec_push(parser->imm_string, out);
+ util_htseth(parser->ht_imm_string, str, hash, out);
+ return out;
+}
+
+static ast_value* parser_const_vector(parser_t *parser, vector v)
+{
+ size_t i;
+ ast_value *out;
+ for (i = 0; i < vec_size(parser->imm_vector); ++i) {
+ if (!memcmp(&parser->imm_vector[i]->constval.vvec, &v, sizeof(v)))
+ return parser->imm_vector[i];
+ }
+ out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_VECTOR);
+ out->cvq = CV_CONST;
+ out->hasvalue = true;
+ out->isimm = true;
+ out->constval.vvec = v;
+ vec_push(parser->imm_vector, out);
+ return out;
+}
+
+static ast_value* parser_const_vector_f(parser_t *parser, float x, float y, float z)
+{
+ vector v;
+ v.x = x;
+ v.y = y;
+ v.z = z;
+ return parser_const_vector(parser, v);
+}
+
+static ast_value* parser_const_vector_0(parser_t *parser)
+{
+ if (!parser->imm_vector_zero)
+ parser->imm_vector_zero = parser_const_vector_f(parser, 0, 0, 0);
+ return parser->imm_vector_zero;
+}
+
+static ast_expression* parser_find_field(parser_t *parser, const char *name)
+{
+ return ( ast_expression*)util_htget(parser->htfields, name);
+}
+
+static ast_expression* parser_find_label(parser_t *parser, const char *name)
+{
+ size_t i;
+ for(i = 0; i < vec_size(parser->labels); i++)
+ if (!strcmp(parser->labels[i]->name, name))
+ return (ast_expression*)parser->labels[i];
+ return NULL;
+}
+
+static ast_expression* parser_find_global(parser_t *parser, const char *name)
+{
+ ast_expression *var = (ast_expression*)util_htget(parser->aliases, parser_tokval(parser));
+ if (var)
+ return var;
+ return (ast_expression*)util_htget(parser->htglobals, name);
+}
+
+static ast_expression* parser_find_param(parser_t *parser, const char *name)
+{
+ size_t i;
+ ast_value *fun;
+ if (!parser->function)
+ return NULL;
+ fun = parser->function->vtype;
+ for (i = 0; i < vec_size(fun->expression.params); ++i) {
+ if (!strcmp(fun->expression.params[i]->name, name))
+ return (ast_expression*)(fun->expression.params[i]);
+ }
+ return NULL;
+}
+
+static ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto, bool *isparam)
+{
+ size_t i, hash;
+ ast_expression *e;
+
+ hash = util_hthash(parser->htglobals, name);
+
+ *isparam = false;
+ for (i = vec_size(parser->variables); i > upto;) {
+ --i;
+ if ( (e = (ast_expression*)util_htgeth(parser->variables[i], name, hash)) )
+ return e;
+ }
+ *isparam = true;
+ return parser_find_param(parser, name);
+}
+
+static ast_expression* parser_find_var(parser_t *parser, const char *name)
+{
+ bool dummy;
+ ast_expression *v;
+ v = parser_find_local(parser, name, 0, &dummy);
+ if (!v) v = parser_find_global(parser, name);
+ return v;
+}
+
+static ast_value* parser_find_typedef(parser_t *parser, const char *name, size_t upto)
+{
+ size_t i, hash;
+ ast_value *e;
+ hash = util_hthash(parser->typedefs[0], name);
+
+ for (i = vec_size(parser->typedefs); i > upto;) {
+ --i;
+ if ( (e = (ast_value*)util_htgeth(parser->typedefs[i], name, hash)) )
+ return e;
+ }
+ return NULL;
+}
+
+/* include intrinsics */
+#include "intrin.h"
+
+typedef struct
+{
+ size_t etype; /* 0 = expression, others are operators */
+ bool isparen;
+ size_t off;
+ ast_expression *out;
+ ast_block *block; /* for commas and function calls */
+ lex_ctx ctx;
+} sy_elem;
+
+enum {
+ PAREN_EXPR,
+ PAREN_FUNC,
+ PAREN_INDEX,
+ PAREN_TERNARY1,
+ PAREN_TERNARY2
+};
+typedef struct
+{
+ sy_elem *out;
+ sy_elem *ops;
+ size_t *argc;
+ unsigned int *paren;
+} shunt;
+
+static sy_elem syexp(lex_ctx ctx, ast_expression *v) {
+ sy_elem e;
+ e.etype = 0;
+ e.off = 0;
+ e.out = v;
+ e.block = NULL;
+ e.ctx = ctx;
+ e.isparen = false;
+ return e;
+}
+
+static sy_elem syblock(lex_ctx ctx, ast_block *v) {
+ sy_elem e;
+ e.etype = 0;
+ e.off = 0;
+ e.out = (ast_expression*)v;
+ e.block = v;
+ e.ctx = ctx;
+ e.isparen = false;
+ return e;
+}
+
+static sy_elem syop(lex_ctx ctx, const oper_info *op) {
+ sy_elem e;
+ e.etype = 1 + (op - operators);
+ e.off = 0;
+ e.out = NULL;
+ e.block = NULL;
+ e.ctx = ctx;
+ e.isparen = false;
+ return e;
+}
+
+static sy_elem syparen(lex_ctx ctx, size_t off) {
+ sy_elem e;
+ e.etype = 0;
+ e.off = off;
+ e.out = NULL;
+ e.block = NULL;
+ e.ctx = ctx;
+ e.isparen = true;
+ return e;
+}
+
+/* With regular precedence rules, ent.foo[n] is the same as (ent.foo)[n],
+ * so we need to rotate it to become ent.(foo[n]).
+ */
+static bool rotate_entfield_array_index_nodes(ast_expression **out)
+{
+ ast_array_index *index, *oldindex;
+ ast_entfield *entfield;
+
+ ast_value *field;
+ ast_expression *sub;
+ ast_expression *entity;
+
+ lex_ctx ctx = ast_ctx(*out);
+
+ if (!ast_istype(*out, ast_array_index))
+ return false;
+ index = (ast_array_index*)*out;
+
+ if (!ast_istype(index->array, ast_entfield))
+ return false;
+ entfield = (ast_entfield*)index->array;
+
+ if (!ast_istype(entfield->field, ast_value))
+ return false;
+ field = (ast_value*)entfield->field;
+
+ sub = index->index;
+ entity = entfield->entity;
+
+ oldindex = index;
+
+ index = ast_array_index_new(ctx, (ast_expression*)field, sub);
+ entfield = ast_entfield_new(ctx, entity, (ast_expression*)index);
+ *out = (ast_expression*)entfield;
+
+ oldindex->array = NULL;
+ oldindex->index = NULL;
+ ast_delete(oldindex);
+
+ return true;
+}
+
+static bool immediate_is_true(lex_ctx ctx, ast_value *v)
+{
+ switch (v->expression.vtype) {
+ case TYPE_FLOAT:
+ return !!v->constval.vfloat;
+ case TYPE_INTEGER:
+ return !!v->constval.vint;
+ case TYPE_VECTOR:
+ if (OPTS_FLAG(CORRECT_LOGIC))
+ return v->constval.vvec.x &&
+ v->constval.vvec.y &&
+ v->constval.vvec.z;
+ else
+ return !!(v->constval.vvec.x);
+ case TYPE_STRING:
+ if (!v->constval.vstring)
+ return false;
+ if (v->constval.vstring && OPTS_FLAG(TRUE_EMPTY_STRINGS))
+ return true;
+ return !!v->constval.vstring[0];
+ default:
+ compile_error(ctx, "internal error: immediate_is_true on invalid type");
+ return !!v->constval.vfunc;
+ }
+}
+
+static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
+{
+ const oper_info *op;
+ lex_ctx ctx;
+ ast_expression *out = NULL;
+ ast_expression *exprs[3];
+ ast_block *blocks[3];
+ ast_value *asvalue[3];
+ ast_binstore *asbinstore;
+ size_t i, assignop, addop, subop;
+ qcint generated_op = 0;
+
+ char ty1[1024];
+ char ty2[1024];
+
+ if (!vec_size(sy->ops)) {
+ parseerror(parser, "internal error: missing operator");
+ return false;
+ }
+
+ if (vec_last(sy->ops).isparen) {
+ parseerror(parser, "unmatched parenthesis");
+ return false;
+ }
+
+ op = &operators[vec_last(sy->ops).etype - 1];
+ ctx = vec_last(sy->ops).ctx;
+
+ if (vec_size(sy->out) < op->operands) {
+ compile_error(ctx, "internal error: not enough operands: %i (operator %s (%i))", vec_size(sy->out),
+ op->op, (int)op->id);
+ return false;
+ }
+
+ vec_shrinkby(sy->ops, 1);
+
+ /* op(:?) has no input and no output */
+ if (!op->operands)
+ return true;
+
+ vec_shrinkby(sy->out, op->operands);
+ for (i = 0; i < op->operands; ++i) {
+ exprs[i] = sy->out[vec_size(sy->out)+i].out;
+ blocks[i] = sy->out[vec_size(sy->out)+i].block;
+ asvalue[i] = (ast_value*)exprs[i];
+
+ if (exprs[i]->vtype == TYPE_NOEXPR &&
+ !(i != 0 && op->id == opid2('?',':')) &&
+ !(i == 1 && op->id == opid1('.')))
+ {
+ if (ast_istype(exprs[i], ast_label))
+ compile_error(ast_ctx(exprs[i]), "expected expression, got an unknown identifier");
+ else
+ compile_error(ast_ctx(exprs[i]), "not an expression");
+ (void)!compile_warning(ast_ctx(exprs[i]), WARN_DEBUG, "expression %u\n", (unsigned int)i);
+ }
+ }
+
+ if (blocks[0] && !vec_size(blocks[0]->exprs) && op->id != opid1(',')) {
+ compile_error(ctx, "internal error: operator cannot be applied on empty blocks");
+ return false;
+ }
+
+#define NotSameType(T) \
+ (exprs[0]->vtype != exprs[1]->vtype || \
+ exprs[0]->vtype != T)
+#define CanConstFold1(A) \
+ (ast_istype((A), ast_value) && ((ast_value*)(A))->hasvalue && (((ast_value*)(A))->cvq == CV_CONST) &&\
+ (A)->vtype != TYPE_FUNCTION)
+#define CanConstFold(A, B) \
+ (CanConstFold1(A) && CanConstFold1(B))
+#define ConstV(i) (asvalue[(i)]->constval.vvec)
+#define ConstF(i) (asvalue[(i)]->constval.vfloat)
+#define ConstS(i) (asvalue[(i)]->constval.vstring)
+ switch (op->id)
+ {
+ default:
+ compile_error(ctx, "internal error: unhandled operator: %s (%i)", op->op, (int)op->id);
+ return false;
+
+ case opid1('.'):
+ if (exprs[0]->vtype == TYPE_VECTOR &&
+ exprs[1]->vtype == TYPE_NOEXPR)
+ {
+ if (exprs[1] == (ast_expression*)parser->const_vec[0])
+ out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
+ else if (exprs[1] == (ast_expression*)parser->const_vec[1])
+ out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
+ else if (exprs[1] == (ast_expression*)parser->const_vec[2])
+ out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
+ else {
+ compile_error(ctx, "access to invalid vector component");
+ return false;
+ }
+ }
+ else if (exprs[0]->vtype == TYPE_ENTITY) {
+ if (exprs[1]->vtype != TYPE_FIELD) {
+ compile_error(ast_ctx(exprs[1]), "type error: right hand of member-operand should be an entity-field");
+ return false;
+ }
+ out = (ast_expression*)ast_entfield_new(ctx, exprs[0], exprs[1]);
+ }
+ else if (exprs[0]->vtype == TYPE_VECTOR) {
+ compile_error(ast_ctx(exprs[1]), "vectors cannot be accessed this way");
+ return false;
+ }
+ else {
+ compile_error(ast_ctx(exprs[1]), "type error: member-of operator on something that is not an entity or vector");
+ return false;
+ }
+ break;
+
+ case opid1('['):
+ if (exprs[0]->vtype != TYPE_ARRAY &&
+ !(exprs[0]->vtype == TYPE_FIELD &&
+ exprs[0]->next->vtype == TYPE_ARRAY))
+ {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ compile_error(ast_ctx(exprs[0]), "cannot index value of type %s", ty1);
+ return false;
+ }
+ if (exprs[1]->vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ compile_error(ast_ctx(exprs[1]), "index must be of type float, not %s", ty1);
+ return false;
+ }
+ out = (ast_expression*)ast_array_index_new(ctx, exprs[0], exprs[1]);
+ if (rotate_entfield_array_index_nodes(&out))
+ {
+#if 0
+ /* This is not broken in fteqcc anymore */
+ if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
+ /* this error doesn't need to make us bail out */
+ (void)!parsewarning(parser, WARN_EXTENSIONS,
+ "accessing array-field members of an entity without parenthesis\n"
+ " -> this is an extension from -std=gmqcc");
+ }
+#endif
+ }
+ break;
+
+ case opid1(','):
+ if (vec_size(sy->paren) && vec_last(sy->paren) == PAREN_FUNC) {
+ vec_push(sy->out, syexp(ctx, exprs[0]));
+ vec_push(sy->out, syexp(ctx, exprs[1]));
+ vec_last(sy->argc)++;
+ return true;
+ }
+ if (blocks[0]) {
+ if (!ast_block_add_expr(blocks[0], exprs[1]))
+ return false;
+ } else {
+ blocks[0] = ast_block_new(ctx);
+ if (!ast_block_add_expr(blocks[0], exprs[0]) ||
+ !ast_block_add_expr(blocks[0], exprs[1]))
+ {
+ return false;
+ }
+ }
+ ast_block_set_type(blocks[0], exprs[1]);
+
+ vec_push(sy->out, syblock(ctx, blocks[0]));
+ return true;
+
+ case opid2('+','P'):
+ out = exprs[0];
+ break;
+ case opid2('-','P'):
+ switch (exprs[0]->vtype) {
+ case TYPE_FLOAT:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_float(parser, -ConstF(0));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F,
+ (ast_expression*)parser_const_float_0(parser),
+ exprs[0]);
+ break;
+ case TYPE_VECTOR:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_vector_f(parser,
+ -ConstV(0).x, -ConstV(0).y, -ConstV(0).z);
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V,
+ (ast_expression*)parser_const_vector_0(parser),
+ exprs[0]);
+ break;
+ default:
+ compile_error(ctx, "invalid types used in expression: cannot negate type %s",
+ type_name[exprs[0]->vtype]);
+ return false;
+ }
+ break;
+
+ case opid2('!','P'):
+ switch (exprs[0]->vtype) {
+ case TYPE_FLOAT:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_float(parser, !ConstF(0));
+ else
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
+ break;
+ case TYPE_VECTOR:
+ if (CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_float(parser,
+ (!ConstV(0).x && !ConstV(0).y && !ConstV(0).z));
+ else
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[0]);
+ break;
+ case TYPE_STRING:
+ if (CanConstFold1(exprs[0])) {
+ if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
+ out = (ast_expression*)parser_const_float(parser, !ConstS(0));
+ else
+ out = (ast_expression*)parser_const_float(parser, !ConstS(0) || !*ConstS(0));
+ } else {
+ if (OPTS_FLAG(TRUE_EMPTY_STRINGS))
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, exprs[0]);
+ else
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[0]);
+ }
+ break;
+ /* we don't constant-fold NOT for these types */
+ case TYPE_ENTITY:
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_ENT, exprs[0]);
+ break;
+ case TYPE_FUNCTION:
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_FNC, exprs[0]);
+ break;
+ default:
+ compile_error(ctx, "invalid types used in expression: cannot logically negate type %s",
+ type_name[exprs[0]->vtype]);
+ return false;
+ }
+ break;
+
+ case opid1('+'):
+ if (exprs[0]->vtype != exprs[1]->vtype ||
+ (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
+ {
+ compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ }
+ switch (exprs[0]->vtype) {
+ case TYPE_FLOAT:
+ if (CanConstFold(exprs[0], exprs[1]))
+ {
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) + ConstF(1));
+ }
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
+ break;
+ case TYPE_VECTOR:
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_add(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
+ break;
+ default:
+ compile_error(ctx, "invalid types used in expression: cannot add type %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ };
+ break;
+ case opid1('-'):
+ if (exprs[0]->vtype != exprs[1]->vtype ||
+ (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
+ {
+ compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
+ type_name[exprs[1]->vtype],
+ type_name[exprs[0]->vtype]);
+ return false;
+ }
+ switch (exprs[0]->vtype) {
+ case TYPE_FLOAT:
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) - ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
+ break;
+ case TYPE_VECTOR:
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_sub(ConstV(0), ConstV(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
+ break;
+ default:
+ compile_error(ctx, "invalid types used in expression: cannot subtract type %s from %s",
+ type_name[exprs[1]->vtype],
+ type_name[exprs[0]->vtype]);
+ return false;
+ };
+ break;
+ case opid1('*'):
+ if (exprs[0]->vtype != exprs[1]->vtype &&
+ !(exprs[0]->vtype == TYPE_VECTOR &&
+ exprs[1]->vtype == TYPE_FLOAT) &&
+ !(exprs[1]->vtype == TYPE_VECTOR &&
+ exprs[0]->vtype == TYPE_FLOAT)
+ )
+ {
+ compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
+ type_name[exprs[1]->vtype],
+ type_name[exprs[0]->vtype]);
+ return false;
+ }
+ switch (exprs[0]->vtype) {
+ case TYPE_FLOAT:
+ if (exprs[1]->vtype == TYPE_VECTOR)
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(1), ConstF(0)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_FV, exprs[0], exprs[1]);
+ }
+ else
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) * ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, exprs[0], exprs[1]);
+ }
+ break;
+ case TYPE_VECTOR:
+ if (exprs[1]->vtype == TYPE_FLOAT)
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), ConstF(1)));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], exprs[1]);
+ }
+ else
+ {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, vec3_mulvv(ConstV(0), ConstV(1)));
+ else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[0])) {
+ vector vec = ConstV(0);
+ if (!vec.y && !vec.z) { /* 'n 0 0' * v */
+ ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
+ out = (ast_expression*)ast_member_new(ctx, exprs[1], 0, NULL);
+ out->node.keep = false;
+ ((ast_member*)out)->rvalue = true;
+ if (vec.x != 1)
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.x), out);
+ }
+ else if (!vec.x && !vec.z) { /* '0 n 0' * v */
+ ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
+ out = (ast_expression*)ast_member_new(ctx, exprs[1], 1, NULL);
+ out->node.keep = false;
+ ((ast_member*)out)->rvalue = true;
+ if (vec.y != 1)
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.y), out);
+ }
+ else if (!vec.x && !vec.y) { /* '0 n 0' * v */
+ ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
+ out = (ast_expression*)ast_member_new(ctx, exprs[1], 2, NULL);
+ out->node.keep = false;
+ ((ast_member*)out)->rvalue = true;
+ if (vec.z != 1)
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, (ast_expression*)parser_const_float(parser, vec.z), out);
+ }
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
+ }
+ else if (OPTS_OPTIMIZATION(OPTIM_VECTOR_COMPONENTS) && CanConstFold1(exprs[1])) {
+ vector vec = ConstV(1);
+ if (!vec.y && !vec.z) { /* v * 'n 0 0' */
+ ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
+ out = (ast_expression*)ast_member_new(ctx, exprs[0], 0, NULL);
+ out->node.keep = false;
+ ((ast_member*)out)->rvalue = true;
+ if (vec.x != 1)
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.x));
+ }
+ else if (!vec.x && !vec.z) { /* v * '0 n 0' */
+ ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
+ out = (ast_expression*)ast_member_new(ctx, exprs[0], 1, NULL);
+ out->node.keep = false;
+ ((ast_member*)out)->rvalue = true;
+ if (vec.y != 1)
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.y));
+ }
+ else if (!vec.x && !vec.y) { /* v * '0 n 0' */
+ ++opts_optimizationcount[OPTIM_VECTOR_COMPONENTS];
+ out = (ast_expression*)ast_member_new(ctx, exprs[0], 2, NULL);
+ out->node.keep = false;
+ ((ast_member*)out)->rvalue = true;
+ if (vec.z != 1)
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_F, out, (ast_expression*)parser_const_float(parser, vec.z));
+ }
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
+ }
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
+ }
+ break;
+ default:
+ compile_error(ctx, "invalid types used in expression: cannot multiply types %s and %s",
+ type_name[exprs[1]->vtype],
+ type_name[exprs[0]->vtype]);
+ return false;
+ };
+ break;
+ case opid1('/'):
+ if (exprs[1]->vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
+ return false;
+ }
+ if (exprs[0]->vtype == TYPE_FLOAT) {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser, ConstF(0) / ConstF(1));
+ else
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
+ }
+ else if (exprs[0]->vtype == TYPE_VECTOR) {
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_vector(parser, vec3_mulvf(ConstV(0), 1.0/ConstF(1)));
+ else {
+ if (CanConstFold1(exprs[1])) {
+ out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
+ } else {
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
+ (ast_expression*)parser_const_float_1(parser),
+ exprs[1]);
+ }
+ if (!out) {
+ compile_error(ctx, "internal error: failed to generate division");
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_VF, exprs[0], out);
+ }
+ }
+ else
+ {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in expression: cannot divide tyeps %s and %s", ty1, ty2);
+ return false;
+ }
+ break;
+
+ case opid1('%'):
+ if (NotSameType(TYPE_FLOAT)) {
+ compile_error(ctx, "invalid types used in expression: cannot perform modulo operation between types %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ }
+ if (CanConstFold(exprs[0], exprs[1])) {
+ out = (ast_expression*)parser_const_float(parser,
+ (float)(((qcint)ConstF(0)) % ((qcint)ConstF(1))));
+ } else {
+ /* generate a call to __builtin_mod */
+ ast_expression *mod = intrin_func(parser, "mod");
+ ast_call *call = NULL;
+ if (!mod) return false; /* can return null for missing floor */
+
+ call = ast_call_new(parser_ctx(parser), mod);
+ vec_push(call->params, exprs[0]);
+ vec_push(call->params, exprs[1]);
+
+ out = (ast_expression*)call;
+ }
+ break;
+
+ case opid2('%','='):
+ compile_error(ctx, "%= is unimplemented");
+ return false;
+
+ case opid1('|'):
+ case opid1('&'):
+ if (NotSameType(TYPE_FLOAT)) {
+ compile_error(ctx, "invalid types used in expression: cannot perform bit operations between types %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ }
+ if (CanConstFold(exprs[0], exprs[1]))
+ out = (ast_expression*)parser_const_float(parser,
+ (op->id == opid1('|') ? (float)( ((qcint)ConstF(0)) | ((qcint)ConstF(1)) ) :
+ (float)( ((qcint)ConstF(0)) & ((qcint)ConstF(1)) ) ));
+ else
+ out = (ast_expression*)ast_binary_new(ctx,
+ (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
+ exprs[0], exprs[1]);
+ break;
+ case opid1('^'):
+ compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
+ return false;
+
+ case opid2('<','<'):
+ case opid2('>','>'):
+ if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
+ if (op->id == opid2('<','<'))
+ out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) << (unsigned int)(ConstF(1))));
+ else
+ out = (ast_expression*)parser_const_float(parser, (double)((unsigned int)(ConstF(0)) >> (unsigned int)(ConstF(1))));
+ break;
+ }
+ case opid3('<','<','='):
+ case opid3('>','>','='):
+ compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
+ return false;
+
+ case opid2('|','|'):
+ generated_op += 1; /* INSTR_OR */
+ case opid2('&','&'):
+ generated_op += INSTR_AND;
+ if (CanConstFold(exprs[0], exprs[1]))
+ {
+ if (OPTS_FLAG(PERL_LOGIC)) {
+ if (immediate_is_true(ctx, asvalue[0]))
+ out = exprs[1];
+ }
+ else
+ out = (ast_expression*)parser_const_float(parser,
+ ( (generated_op == INSTR_OR)
+ ? (immediate_is_true(ctx, asvalue[0]) || immediate_is_true(ctx, asvalue[1]))
+ : (immediate_is_true(ctx, asvalue[0]) && immediate_is_true(ctx, asvalue[1])) )
+ ? 1 : 0);
+ }
+ else
+ {
+ if (OPTS_FLAG(PERL_LOGIC) && !ast_compare_type(exprs[0], exprs[1])) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types for logical operation with -fperl-logic: %s and %s", ty1, ty2);
+ return false;
+ }
+ for (i = 0; i < 2; ++i) {
+ if (OPTS_FLAG(CORRECT_LOGIC) && exprs[i]->vtype == TYPE_VECTOR) {
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_V, exprs[i]);
+ if (!out) break;
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
+ if (!out) break;
+ exprs[i] = out; out = NULL;
+ if (OPTS_FLAG(PERL_LOGIC)) {
+ /* here we want to keep the right expressions' type */
+ break;
+ }
+ }
+ else if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && exprs[i]->vtype == TYPE_STRING) {
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_S, exprs[i]);
+ if (!out) break;
+ out = (ast_expression*)ast_unary_new(ctx, INSTR_NOT_F, out);
+ if (!out) break;
+ exprs[i] = out; out = NULL;
+ if (OPTS_FLAG(PERL_LOGIC)) {
+ /* here we want to keep the right expressions' type */
+ break;
+ }
+ }
+ }
+ out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
+ }
+ break;
+
+ case opid2('?',':'):
+ if (vec_last(sy->paren) != PAREN_TERNARY2) {
+ compile_error(ctx, "mismatched parenthesis/ternary");
+ return false;
+ }
+ vec_pop(sy->paren);
+ if (!ast_compare_type(exprs[1], exprs[2])) {
+ ast_type_to_string(exprs[1], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[2], ty2, sizeof(ty2));
+ compile_error(ctx, "operands of ternary expression must have the same type, got %s and %s", ty1, ty2);
+ return false;
+ }
+ if (CanConstFold1(exprs[0]))
+ out = (immediate_is_true(ctx, asvalue[0]) ? exprs[1] : exprs[2]);
+ else
+ out = (ast_expression*)ast_ternary_new(ctx, exprs[0], exprs[1], exprs[2]);
+ break;
+
+ case opid2('*', '*'):
+ if (NotSameType(TYPE_FLOAT)) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in exponentiation: %s and %s",
+ ty1, ty2);
+
+ return false;
+ }
+
+ if (CanConstFold(exprs[0], exprs[1])) {
+ out = (ast_expression*)parser_const_float(parser, powf(ConstF(0), ConstF(1)));
+ } else {
+ ast_call *gencall = ast_call_new(parser_ctx(parser), intrin_func(parser, "pow"));
+ vec_push(gencall->params, exprs[0]);
+ vec_push(gencall->params, exprs[1]);
+ out = (ast_expression*)gencall;
+ }
+ break;
+
+ case opid3('<','=','>'): /* -1, 0, or 1 */
+ if (NotSameType(TYPE_FLOAT)) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in comparision: %s and %s",
+ ty1, ty2);
+
+ return false;
+ }
+
+ if (CanConstFold(exprs[0], exprs[1])) {
+ if (ConstF(0) < ConstF(1))
+ out = (ast_expression*)parser_const_float_neg1(parser);
+ else if (ConstF(0) == ConstF(1))
+ out = (ast_expression*)parser_const_float_0(parser);
+ else if (ConstF(0) > ConstF(1))
+ out = (ast_expression*)parser_const_float_1(parser);
+ } else {
+ ast_binary *eq = ast_binary_new(ctx, INSTR_EQ_F, exprs[0], exprs[1]);
+
+ eq->refs = (ast_binary_ref)false; /* references nothing */
+
+ /* if (lt) { */
+ out = (ast_expression*)ast_ternary_new(ctx,
+ (ast_expression*)ast_binary_new(ctx, INSTR_LT, exprs[0], exprs[1]),
+ /* out = -1 */
+ (ast_expression*)parser_const_float_neg1(parser),
+ /* } else { */
+ /* if (eq) { */
+ (ast_expression*)ast_ternary_new(ctx, (ast_expression*)eq,
+ /* out = 0 */
+ (ast_expression*)parser_const_float_0(parser),
+ /* } else { */
+ /* out = 1 */
+ (ast_expression*)parser_const_float_1(parser)
+ /* } */
+ )
+ /* } */
+ );
+
+ }
+ break;
+
+ case opid1('>'):
+ generated_op += 1; /* INSTR_GT */
+ case opid1('<'):
+ generated_op += 1; /* INSTR_LT */
+ case opid2('>', '='):
+ generated_op += 1; /* INSTR_GE */
+ case opid2('<', '='):
+ generated_op += INSTR_LE;
+ if (NotSameType(TYPE_FLOAT)) {
+ compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
+ break;
+ case opid2('!', '='):
+ if (exprs[0]->vtype != exprs[1]->vtype) {
+ compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->vtype], exprs[0], exprs[1]);
+ break;
+ case opid2('=', '='):
+ if (exprs[0]->vtype != exprs[1]->vtype) {
+ compile_error(ctx, "invalid types used in expression: cannot perform comparison between types %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->vtype], exprs[0], exprs[1]);
+ break;
+
+ case opid1('='):
+ if (ast_istype(exprs[0], ast_entfield)) {
+ ast_expression *field = ((ast_entfield*)exprs[0])->field;
+ if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
+ exprs[0]->vtype == TYPE_FIELD &&
+ exprs[0]->next->vtype == TYPE_VECTOR)
+ {
+ assignop = type_storep_instr[TYPE_VECTOR];
+ }
+ else
+ assignop = type_storep_instr[exprs[0]->vtype];
+ if (assignop == VINSTR_END || !ast_compare_type(field->next, exprs[1]))
+ {
+ ast_type_to_string(field->next, ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
+ field->next->vtype == TYPE_FUNCTION &&
+ exprs[1]->vtype == TYPE_FUNCTION)
+ {
+ (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
+ "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ else
+ compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ }
+ else
+ {
+ if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
+ exprs[0]->vtype == TYPE_FIELD &&
+ exprs[0]->next->vtype == TYPE_VECTOR)
+ {
+ assignop = type_store_instr[TYPE_VECTOR];
+ }
+ else {
+ assignop = type_store_instr[exprs[0]->vtype];
+ }
+
+ if (assignop == VINSTR_END) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ else if (!ast_compare_type(exprs[0], exprs[1]))
+ {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ if (OPTS_FLAG(ASSIGN_FUNCTION_TYPES) &&
+ exprs[0]->vtype == TYPE_FUNCTION &&
+ exprs[1]->vtype == TYPE_FUNCTION)
+ {
+ (void)!compile_warning(ctx, WARN_ASSIGN_FUNCTION_TYPES,
+ "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ else
+ compile_error(ctx, "invalid types in assignment: cannot assign %s to %s", ty2, ty1);
+ }
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
+ break;
+ case opid3('+','+','P'):
+ case opid3('-','-','P'):
+ /* prefix ++ */
+ if (exprs[0]->vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ compile_error(ast_ctx(exprs[0]), "invalid type for prefix increment: %s", ty1);
+ return false;
+ }
+ if (op->id == opid3('+','+','P'))
+ addop = INSTR_ADD_F;
+ else
+ addop = INSTR_SUB_F;
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield)) {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ } else {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ }
+ break;
+ case opid3('S','+','+'):
+ case opid3('S','-','-'):
+ /* prefix ++ */
+ if (exprs[0]->vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ compile_error(ast_ctx(exprs[0]), "invalid type for suffix increment: %s", ty1);
+ return false;
+ }
+ if (op->id == opid3('S','+','+')) {
+ addop = INSTR_ADD_F;
+ subop = INSTR_SUB_F;
+ } else {
+ addop = INSTR_SUB_F;
+ subop = INSTR_ADD_F;
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ compile_error(ast_ctx(exprs[0]), "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield)) {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STOREP_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ } else {
+ out = (ast_expression*)ast_binstore_new(ctx, INSTR_STORE_F, addop,
+ exprs[0],
+ (ast_expression*)parser_const_float_1(parser));
+ }
+ if (!out)
+ return false;
+ out = (ast_expression*)ast_binary_new(ctx, subop,
+ out,
+ (ast_expression*)parser_const_float_1(parser));
+ break;
+ case opid2('+','='):
+ case opid2('-','='):
+ if (exprs[0]->vtype != exprs[1]->vtype ||
+ (exprs[0]->vtype != TYPE_VECTOR && exprs[0]->vtype != TYPE_FLOAT) )
+ {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
+ ty1, ty2);
+ return false;
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->vtype];
+ else
+ assignop = type_store_instr[exprs[0]->vtype];
+ switch (exprs[0]->vtype) {
+ case TYPE_FLOAT:
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('+','=') ? INSTR_ADD_F : INSTR_SUB_F),
+ exprs[0], exprs[1]);
+ break;
+ case TYPE_VECTOR:
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('+','=') ? INSTR_ADD_V : INSTR_SUB_V),
+ exprs[0], exprs[1]);
+ break;
+ default:
+ compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ };
+ break;
+ case opid2('*','='):
+ case opid2('/','='):
+ if (exprs[1]->vtype != TYPE_FLOAT ||
+ !(exprs[0]->vtype == TYPE_FLOAT ||
+ exprs[0]->vtype == TYPE_VECTOR))
+ {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in expression: %s and %s",
+ ty1, ty2);
+ return false;
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->vtype];
+ else
+ assignop = type_store_instr[exprs[0]->vtype];
+ switch (exprs[0]->vtype) {
+ case TYPE_FLOAT:
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('*','=') ? INSTR_MUL_F : INSTR_DIV_F),
+ exprs[0], exprs[1]);
+ break;
+ case TYPE_VECTOR:
+ if (op->id == opid2('*','=')) {
+ out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
+ exprs[0], exprs[1]);
+ } else {
+ /* there's no DIV_VF */
+ if (CanConstFold1(exprs[1])) {
+ out = (ast_expression*)parser_const_float(parser, 1.0 / ConstF(1));
+ } else {
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F,
+ (ast_expression*)parser_const_float_1(parser),
+ exprs[1]);
+ }
+ if (!out) {
+ compile_error(ctx, "internal error: failed to generate division");
+ return false;
+ }
+ out = (ast_expression*)ast_binstore_new(ctx, assignop, INSTR_MUL_VF,
+ exprs[0], out);
+ }
+ break;
+ default:
+ compile_error(ctx, "invalid types used in expression: cannot add or subtract type %s and %s",
+ type_name[exprs[0]->vtype],
+ type_name[exprs[1]->vtype]);
+ return false;
+ };
+ break;
+ case opid2('&','='):
+ case opid2('|','='):
+ if (NotSameType(TYPE_FLOAT)) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in expression: %s and %s",
+ ty1, ty2);
+ return false;
+ }
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->vtype];
+ else
+ assignop = type_store_instr[exprs[0]->vtype];
+ out = (ast_expression*)ast_binstore_new(ctx, assignop,
+ (op->id == opid2('&','=') ? INSTR_BITAND : INSTR_BITOR),
+ exprs[0], exprs[1]);
+ break;
+ case opid3('&','~','='):
+ /* This is like: a &= ~(b);
+ * But QC has no bitwise-not, so we implement it as
+ * a -= a & (b);
+ */
+ if (NotSameType(TYPE_FLOAT)) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ ast_type_to_string(exprs[1], ty2, sizeof(ty2));
+ compile_error(ctx, "invalid types used in expression: %s and %s",
+ ty1, ty2);
+ return false;
+ }
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->vtype];
+ else
+ assignop = type_store_instr[exprs[0]->vtype];
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_BITAND, exprs[0], exprs[1]);
+ if (!out)
+ return false;
+ if (ast_istype(exprs[0], ast_value) && asvalue[0]->cvq == CV_CONST) {
+ compile_error(ctx, "assignment to constant `%s`", asvalue[0]->name);
+ }
+ asbinstore = ast_binstore_new(ctx, assignop, INSTR_SUB_F, exprs[0], out);
+ asbinstore->keep_dest = true;
+ out = (ast_expression*)asbinstore;
+ break;
+
+ case opid2('~', 'P'):
+ if (exprs[0]->vtype != TYPE_FLOAT) {
+ ast_type_to_string(exprs[0], ty1, sizeof(ty1));
+ compile_error(ast_ctx(exprs[0]), "invalid type for bit not: %s", ty1);
+ return false;
+ }
+
+ if(CanConstFold1(exprs[0]))
+ out = (ast_expression*)parser_const_float(parser, ~(qcint)ConstF(0));
+ else
+ out = (ast_expression*)
+ ast_binary_new(ctx, INSTR_SUB_F, (ast_expression*)parser_const_float_neg1(parser), exprs[0]);
+ break;
+ }
+#undef NotSameType
+
+ if (!out) {
+ compile_error(ctx, "failed to apply operator %s", op->op);
+ return false;
+ }
+
+ vec_push(sy->out, syexp(ctx, out));
+ return true;
+}
+
+static bool parser_close_call(parser_t *parser, shunt *sy)
+{
+ /* was a function call */
+ ast_expression *fun;
+ ast_value *funval = NULL;
+ ast_call *call;
+
+ size_t fid;
+ size_t paramcount, i;
+
+ fid = vec_last(sy->ops).off;
+ vec_shrinkby(sy->ops, 1);
+
+ /* out[fid] is the function
+ * everything above is parameters...
+ */
+ if (!vec_size(sy->argc)) {
+ parseerror(parser, "internal error: no argument counter available");
+ return false;
+ }
+
+ paramcount = vec_last(sy->argc);
+ vec_pop(sy->argc);
+
+ if (vec_size(sy->out) < fid) {
+ parseerror(parser, "internal error: broken function call%lu < %lu+%lu\n",
+ (unsigned long)vec_size(sy->out),
+ (unsigned long)fid,
+ (unsigned long)paramcount);
+ return false;
+ }
+
+ fun = sy->out[fid].out;
+
+ if (fun == intrinsic_debug_typestring) {
+ char ty[1024];
+ if (fid+2 != vec_size(sy->out) ||
+ vec_last(sy->out).block)
+ {
+ parseerror(parser, "intrinsic __builtin_debug_typestring requires exactly 1 parameter");
+ return false;
+ }
+ ast_type_to_string(vec_last(sy->out).out, ty, sizeof(ty));
+ ast_unref(vec_last(sy->out).out);
+ sy->out[fid] = syexp(ast_ctx(vec_last(sy->out).out),
+ (ast_expression*)parser_const_string(parser, ty, false));
+ vec_shrinkby(sy->out, 1);
+ return true;
+ }
+
+ call = ast_call_new(sy->ops[vec_size(sy->ops)].ctx, fun);
+ if (!call)
+ return false;
+
+ if (fid+1 < vec_size(sy->out))
+ ++paramcount;
+
+ if (fid+1 + paramcount != vec_size(sy->out)) {
+ parseerror(parser, "internal error: parameter count mismatch: (%lu+1+%lu), %lu",
+ (unsigned long)fid, (unsigned long)paramcount, (unsigned long)vec_size(sy->out));
+ return false;
+ }
+
+ for (i = 0; i < paramcount; ++i)
+ vec_push(call->params, sy->out[fid+1 + i].out);
+ vec_shrinkby(sy->out, paramcount);
+ (void)!ast_call_check_types(call);
+ if (parser->max_param_count < paramcount)
+ parser->max_param_count = paramcount;
+
+ if (ast_istype(fun, ast_value)) {
+ funval = (ast_value*)fun;
+ if ((fun->flags & AST_FLAG_VARIADIC) &&
+ !(/*funval->cvq == CV_CONST && */ funval->hasvalue && funval->constval.vfunc->builtin))
+ {
+ call->va_count = (ast_expression*)parser_const_float(parser, (double)paramcount);
+ }
+ }
+
+ /* overwrite fid, the function, with a call */
+ sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
+
+ if (fun->vtype != TYPE_FUNCTION) {
+ parseerror(parser, "not a function (%s)", type_name[fun->vtype]);
+ return false;
+ }
+
+ if (!fun->next) {
+ parseerror(parser, "could not determine function return type");
+ return false;
+ } else {
+ ast_value *fval = (ast_istype(fun, ast_value) ? ((ast_value*)fun) : NULL);
+
+ if (fun->flags & AST_FLAG_DEPRECATED) {
+ if (!fval) {
+ return !parsewarning(parser, WARN_DEPRECATED,
+ "call to function (which is marked deprecated)\n",
+ "-> it has been declared here: %s:%i",
+ ast_ctx(fun).file, ast_ctx(fun).line);
+ }
+ if (!fval->desc) {
+ return !parsewarning(parser, WARN_DEPRECATED,
+ "call to `%s` (which is marked deprecated)\n"
+ "-> `%s` declared here: %s:%i",
+ fval->name, fval->name, ast_ctx(fun).file, ast_ctx(fun).line);
+ }
+ return !parsewarning(parser, WARN_DEPRECATED,
+ "call to `%s` (deprecated: %s)\n"
+ "-> `%s` declared here: %s:%i",
+ fval->name, fval->desc, fval->name, ast_ctx(fun).file,
+ ast_ctx(fun).line);
+ }
+
+ if (vec_size(fun->params) != paramcount &&
+ !((fun->flags & AST_FLAG_VARIADIC) &&
+ vec_size(fun->params) < paramcount))
+ {
+ const char *fewmany = (vec_size(fun->params) > paramcount) ? "few" : "many";
+ if (fval)
+ return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
+ "too %s parameters for call to %s: expected %i, got %i\n"
+ " -> `%s` has been declared here: %s:%i",
+ fewmany, fval->name, (int)vec_size(fun->params), (int)paramcount,
+ fval->name, ast_ctx(fun).file, (int)ast_ctx(fun).line);
+ else
+ return !parsewarning(parser, WARN_INVALID_PARAMETER_COUNT,
+ "too %s parameters for function call: expected %i, got %i\n"
+ " -> it has been declared here: %s:%i",
+ fewmany, (int)vec_size(fun->params), (int)paramcount,
+ ast_ctx(fun).file, (int)ast_ctx(fun).line);
+ }
+ }
+
+ return true;
+}
+
+static bool parser_close_paren(parser_t *parser, shunt *sy)
+{
+ if (!vec_size(sy->ops)) {
+ parseerror(parser, "unmatched closing paren");
+ return false;
+ }
+
+ while (vec_size(sy->ops)) {
+ if (vec_last(sy->ops).isparen) {
+ if (vec_last(sy->paren) == PAREN_FUNC) {
+ vec_pop(sy->paren);
+ if (!parser_close_call(parser, sy))
+ return false;
+ break;
+ }
+ if (vec_last(sy->paren) == PAREN_EXPR) {
+ vec_pop(sy->paren);
+ if (!vec_size(sy->out)) {
+ compile_error(vec_last(sy->ops).ctx, "empty paren expression");
+ vec_shrinkby(sy->ops, 1);
+ return false;
+ }
+ vec_shrinkby(sy->ops, 1);
+ break;
+ }
+ if (vec_last(sy->paren) == PAREN_INDEX) {
+ vec_pop(sy->paren);
+ /* pop off the parenthesis */
+ vec_shrinkby(sy->ops, 1);
+ /* then apply the index operator */
+ if (!parser_sy_apply_operator(parser, sy))
+ return false;
+ break;
+ }
+ if (vec_last(sy->paren) == PAREN_TERNARY1) {
+ vec_last(sy->paren) = PAREN_TERNARY2;
+ /* pop off the parenthesis */
+ vec_shrinkby(sy->ops, 1);
+ break;
+ }
+ compile_error(vec_last(sy->ops).ctx, "invalid parenthesis");
+ return false;
+ }
+ if (!parser_sy_apply_operator(parser, sy))
+ return false;
+ }
+ return true;
+}
+
+static void parser_reclassify_token(parser_t *parser)
+{
+ size_t i;
+ for (i = 0; i < operator_count; ++i) {
+ if (!strcmp(parser_tokval(parser), operators[i].op)) {
+ parser->tok = TOKEN_OPERATOR;
+ return;
+ }
+ }
+}
+
+static ast_expression* parse_vararg_do(parser_t *parser)
+{
+ ast_expression *idx, *out;
+ ast_value *typevar;
+ ast_value *funtype = parser->function->vtype;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected parameter index and type in parenthesis");
+ return NULL;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "error parsing parameter index");
+ return NULL;
+ }
+
+ idx = parse_expression_leave(parser, true, false, false);
+ if (!idx)
+ return NULL;
+
+ if (parser->tok != ',') {
+ ast_unref(idx);
+ parseerror(parser, "expected comma after parameter index");
+ return NULL;
+ }
+
+ if (!parser_next(parser) || (parser->tok != TOKEN_IDENT && parser->tok != TOKEN_TYPENAME)) {
+ ast_unref(idx);
+ parseerror(parser, "expected typename for vararg");
+ return NULL;
+ }
+
+ typevar = parse_typename(parser, NULL, NULL);
+ if (!typevar) {
+ ast_unref(idx);
+ return NULL;
+ }
+
+ if (parser->tok != ')') {
+ ast_unref(idx);
+ ast_delete(typevar);
+ parseerror(parser, "expected closing paren");
+ return NULL;
+ }
+
+#if 0
+ if (!parser_next(parser)) {
+ ast_unref(idx);
+ ast_delete(typevar);
+ parseerror(parser, "parse error after vararg");
+ return NULL;
+ }
+#endif
+
+ if (!parser->function->varargs) {
+ ast_unref(idx);
+ ast_delete(typevar);
+ parseerror(parser, "function has no variable argument list");
+ return NULL;
+ }
+
+ if (funtype->expression.varparam &&
+ !ast_compare_type((ast_expression*)typevar, (ast_expression*)funtype->expression.varparam))
+ {
+ char ty1[1024];
+ char ty2[1024];
+ ast_type_to_string((ast_expression*)typevar, ty1, sizeof(ty1));
+ ast_type_to_string((ast_expression*)funtype->expression.varparam, ty2, sizeof(ty2));
+ compile_error(ast_ctx(typevar),
+ "function was declared to take varargs of type `%s`, requested type is: %s",
+ ty2, ty1);
+ }
+
+ out = (ast_expression*)ast_array_index_new(ctx, (ast_expression*)(parser->function->varargs), idx);
+ ast_type_adopt(out, typevar);
+ ast_delete(typevar);
+ return out;
+}
+
+static ast_expression* parse_vararg(parser_t *parser)
+{
+ bool old_noops = parser->lex->flags.noops;
+
+ ast_expression *out;
+
+ parser->lex->flags.noops = true;
+ out = parse_vararg_do(parser);
+
+ parser->lex->flags.noops = old_noops;
+ return out;
+}
+
+/* not to be exposed */
+extern bool ftepp_predef_exists(const char *name);
+
+static bool parse_sya_operand(parser_t *parser, shunt *sy, bool with_labels)
+{
+ if (OPTS_FLAG(TRANSLATABLE_STRINGS) &&
+ parser->tok == TOKEN_IDENT &&
+ !strcmp(parser_tokval(parser), "_"))
+ {
+ /* a translatable string */
+ ast_value *val;
+
+ parser->lex->flags.noops = true;
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "use _(\"string\") to create a translatable string constant");
+ return false;
+ }
+ parser->lex->flags.noops = false;
+ if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
+ parseerror(parser, "expected a constant string in translatable-string extension");
+ return false;
+ }
+ val = parser_const_string(parser, parser_tokval(parser), true);
+ if (!val)
+ return false;
+ vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
+
+ if (!parser_next(parser) || parser->tok != ')') {
+ parseerror(parser, "expected closing paren after translatable string");
+ return false;
+ }
+ return true;
+ }
+ else if (parser->tok == TOKEN_DOTS)
+ {
+ ast_expression *va;
+ if (!OPTS_FLAG(VARIADIC_ARGS)) {
+ parseerror(parser, "cannot access varargs (try -fvariadic-args)");
+ return false;
+ }
+ va = parse_vararg(parser);
+ if (!va)
+ return false;
+ vec_push(sy->out, syexp(parser_ctx(parser), va));
+ return true;
+ }
+ else if (parser->tok == TOKEN_FLOATCONST) {
+ ast_value *val;
+ val = parser_const_float(parser, (parser_token(parser)->constval.f));
+ if (!val)
+ return false;
+ vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
+ return true;
+ }
+ else if (parser->tok == TOKEN_INTCONST || parser->tok == TOKEN_CHARCONST) {
+ ast_value *val;
+ val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
+ if (!val)
+ return false;
+ vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
+ return true;
+ }
+ else if (parser->tok == TOKEN_STRINGCONST) {
+ ast_value *val;
+ val = parser_const_string(parser, parser_tokval(parser), false);
+ if (!val)
+ return false;
+ vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
+ return true;
+ }
+ else if (parser->tok == TOKEN_VECTORCONST) {
+ ast_value *val;
+ val = parser_const_vector(parser, parser_token(parser)->constval.v);
+ if (!val)
+ return false;
+ vec_push(sy->out, syexp(parser_ctx(parser), (ast_expression*)val));
+ return true;
+ }
+ else if (parser->tok == TOKEN_IDENT)
+ {
+ const char *ctoken = parser_tokval(parser);
+ ast_expression *prev = vec_size(sy->out) ? vec_last(sy->out).out : NULL;
+ ast_expression *var;
+ /* a_vector.{x,y,z} */
+ if (!vec_size(sy->ops) ||
+ !vec_last(sy->ops).etype ||
+ operators[vec_last(sy->ops).etype-1].id != opid1('.') ||
+ (prev >= intrinsic_debug_typestring &&
+ prev <= intrinsic_debug_typestring))
+ {
+ /* When adding more intrinsics, fix the above condition */
+ prev = NULL;
+ }
+ if (prev && prev->vtype == TYPE_VECTOR && ctoken[0] >= 'x' && ctoken[0] <= 'z' && !ctoken[1])
+ {
+ var = (ast_expression*)parser->const_vec[ctoken[0]-'x'];
+ } else {
+ var = parser_find_var(parser, parser_tokval(parser));
+ if (!var)
+ var = parser_find_field(parser, parser_tokval(parser));
+ }
+ if (!var && with_labels) {
+ var = (ast_expression*)parser_find_label(parser, parser_tokval(parser));
+ if (!with_labels) {
+ ast_label *lbl = ast_label_new(parser_ctx(parser), parser_tokval(parser), true);
+ var = (ast_expression*)lbl;
+ vec_push(parser->labels, lbl);
+ }
+ }
+ if (!var && !strcmp(parser_tokval(parser), "__FUNC__"))
+ var = (ast_expression*)parser_const_string(parser, parser->function->name, false);
+ if (!var) {
+ /* intrinsics */
+ if (!strcmp(parser_tokval(parser), "__builtin_debug_typestring")) {
+ var = (ast_expression*)intrinsic_debug_typestring;
+ }
+ /* now we try for the real intrinsic hashtable. If the string
+ * begins with __builtin, we simply skip past it, otherwise we
+ * use the identifier as is.
+ */
+ else if (!strncmp(parser_tokval(parser), "__builtin_", 10)) {
+ var = intrin_func(parser, parser_tokval(parser) + 10 /* skip __builtin */);
+ }
+
+ if (!var) {
+ char *correct = NULL;
+ size_t i;
+
+ /*
+ * sometimes people use preprocessing predefs without enabling them
+ * i've done this thousands of times already myself. Lets check for
+ * it in the predef table. And diagnose it better :)
+ */
+ if (!OPTS_FLAG(FTEPP_PREDEFS) && ftepp_predef_exists(parser_tokval(parser))) {
+ parseerror(parser, "unexpected ident: %s (use -fftepp-predef to enable pre-defined macros)", parser_tokval(parser));
+ return false;
+ }
+
+ /*
+ * TODO: determine the best score for the identifier: be it
+ * a variable, a field.
+ *
+ * We should also consider adding correction tables for
+ * other things as well.
+ */
+ if (OPTS_OPTION_BOOL(OPTION_CORRECTION)) {
+ correction_t corr;
+ correct_init(&corr);
+
+ for (i = 0; i < vec_size(parser->correct_variables); i++) {
+ correct = correct_str(&corr, parser->correct_variables[i], parser_tokval(parser));
+ if (strcmp(correct, parser_tokval(parser))) {
+ break;
+ } else if (correct) {
+ mem_d(correct);
+ correct = NULL;
+ }
+ }
+ correct_free(&corr);
+
+ if (correct) {
+ parseerror(parser, "unexpected ident: %s (did you mean %s?)", parser_tokval(parser), correct);
+ mem_d(correct);
+ return false;
+ }
+ }
+ parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
+ return false;
+ }
+ }
+ else
+ {
+ if (ast_istype(var, ast_value)) {
+ ((ast_value*)var)->uses++;
+ }
+ else if (ast_istype(var, ast_member)) {
+ ast_member *mem = (ast_member*)var;
+ if (ast_istype(mem->owner, ast_value))
+ ((ast_value*)(mem->owner))->uses++;
+ }
+ }
+ vec_push(sy->out, syexp(parser_ctx(parser), var));
+ return true;
+ }
+ parseerror(parser, "unexpected token `%s`", parser_tokval(parser));
+ return false;
+}
+
+static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels)
+{
+ ast_expression *expr = NULL;
+ shunt sy;
+ size_t i;
+ bool wantop = false;
+ /* only warn once about an assignment in a truth value because the current code
+ * would trigger twice on: if(a = b && ...), once for the if-truth-value, once for the && part
+ */
+ bool warn_truthvalue = true;
+
+ /* count the parens because an if starts with one, so the
+ * end of a condition is an unmatched closing paren
+ */
+ int ternaries = 0;
+
+ memset(&sy, 0, sizeof(sy));
+
+ parser->lex->flags.noops = false;
+
+ parser_reclassify_token(parser);
+
+ while (true)
+ {
+ if (parser->tok == TOKEN_TYPENAME) {
+ parseerror(parser, "unexpected typename");
+ goto onerr;
+ }
+
+ if (parser->tok == TOKEN_OPERATOR)
+ {
+ /* classify the operator */
+ const oper_info *op;
+ const oper_info *olast = NULL;
+ size_t o;
+ for (o = 0; o < operator_count; ++o) {
+ if (((!(operators[o].flags & OP_PREFIX) == !!wantop)) &&
+ /* !(operators[o].flags & OP_SUFFIX) && / * remove this */
+ !strcmp(parser_tokval(parser), operators[o].op))
+ {
+ break;
+ }
+ }
+ if (o == operator_count) {
+ compile_error(parser_ctx(parser), "unknown operator: %s", parser_tokval(parser));
+ goto onerr;
+ }
+ /* found an operator */
+ op = &operators[o];
+
+ /* when declaring variables, a comma starts a new variable */
+ if (op->id == opid1(',') && !vec_size(sy.paren) && stopatcomma) {
+ /* fixup the token */
+ parser->tok = ',';
+ break;
+ }
+
+ /* a colon without a pervious question mark cannot be a ternary */
+ if (!ternaries && op->id == opid2(':','?')) {
+ parser->tok = ':';
+ break;
+ }
+
+ if (op->id == opid1(',')) {
+ if (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
+ (void)!parsewarning(parser, WARN_TERNARY_PRECEDENCE, "suggesting parenthesis around ternary expression");
+ }
+ }
+
+ if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
+ olast = &operators[vec_last(sy.ops).etype-1];
+
+#define IsAssignOp(x) (\
+ (x) == opid1('=') || \
+ (x) == opid2('+','=') || \
+ (x) == opid2('-','=') || \
+ (x) == opid2('*','=') || \
+ (x) == opid2('/','=') || \
+ (x) == opid2('%','=') || \
+ (x) == opid2('&','=') || \
+ (x) == opid2('|','=') || \
+ (x) == opid3('&','~','=') \
+ )
+ if (warn_truthvalue) {
+ if ( (olast && IsAssignOp(olast->id) && (op->id == opid2('&','&') || op->id == opid2('|','|'))) ||
+ (olast && IsAssignOp(op->id) && (olast->id == opid2('&','&') || olast->id == opid2('|','|'))) ||
+ (truthvalue && !vec_size(sy.paren) && IsAssignOp(op->id))
+ )
+ {
+ (void)!parsewarning(parser, WARN_PARENTHESIS, "suggesting parenthesis around assignment used as truth value");
+ warn_truthvalue = false;
+ }
+ }
+
+ while (olast && (
+ (op->prec < olast->prec) ||
+ (op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
+ {
+ if (!parser_sy_apply_operator(parser, &sy))
+ goto onerr;
+ if (vec_size(sy.ops) && !vec_last(sy.ops).isparen)
+ olast = &operators[vec_last(sy.ops).etype-1];
+ else
+ olast = NULL;
+ }
+
+ if (op->id == opid1('(')) {
+ if (wantop) {
+ size_t sycount = vec_size(sy.out);
+ /* we expected an operator, this is the function-call operator */
+ vec_push(sy.paren, PAREN_FUNC);
+ vec_push(sy.ops, syparen(parser_ctx(parser), sycount-1));
+ vec_push(sy.argc, 0);
+ } else {
+ vec_push(sy.paren, PAREN_EXPR);
+ vec_push(sy.ops, syparen(parser_ctx(parser), 0));
+ }
+ wantop = false;
+ } else if (op->id == opid1('[')) {
+ if (!wantop) {
+ parseerror(parser, "unexpected array subscript");
+ goto onerr;
+ }
+ vec_push(sy.paren, PAREN_INDEX);
+ /* push both the operator and the paren, this makes life easier */
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
+ vec_push(sy.ops, syparen(parser_ctx(parser), 0));
+ wantop = false;
+ } else if (op->id == opid2('?',':')) {
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
+ vec_push(sy.ops, syparen(parser_ctx(parser), 0));
+ wantop = false;
+ ++ternaries;
+ vec_push(sy.paren, PAREN_TERNARY1);
+ } else if (op->id == opid2(':','?')) {
+ if (!vec_size(sy.paren)) {
+ parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
+ goto onerr;
+ }
+ if (vec_last(sy.paren) != PAREN_TERNARY1) {
+ parseerror(parser, "unexpected colon outside ternary expression (missing parenthesis?)");
+ goto onerr;
+ }
+ if (!parser_close_paren(parser, &sy))
+ goto onerr;
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
+ wantop = false;
+ --ternaries;
+ } else {
+ vec_push(sy.ops, syop(parser_ctx(parser), op));
+ wantop = !!(op->flags & OP_SUFFIX);
+ }
+ }
+ else if (parser->tok == ')') {
+ while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
+ if (!parser_sy_apply_operator(parser, &sy))
+ goto onerr;
+ }
+ if (!vec_size(sy.paren))
+ break;
+ if (wantop) {
+ if (vec_last(sy.paren) == PAREN_TERNARY1) {
+ parseerror(parser, "mismatched parentheses (closing paren in ternary expression?)");
+ goto onerr;
+ }
+ if (!parser_close_paren(parser, &sy))
+ goto onerr;
+ } else {
+ /* must be a function call without parameters */
+ if (vec_last(sy.paren) != PAREN_FUNC) {
+ parseerror(parser, "closing paren in invalid position");
+ goto onerr;
+ }
+ if (!parser_close_paren(parser, &sy))
+ goto onerr;
+ }
+ wantop = true;
+ }
+ else if (parser->tok == '(') {
+ parseerror(parser, "internal error: '(' should be classified as operator");
+ goto onerr;
+ }
+ else if (parser->tok == '[') {
+ parseerror(parser, "internal error: '[' should be classified as operator");
+ goto onerr;
+ }
+ else if (parser->tok == ']') {
+ while (vec_size(sy.paren) && vec_last(sy.paren) == PAREN_TERNARY2) {
+ if (!parser_sy_apply_operator(parser, &sy))
+ goto onerr;
+ }
+ if (!vec_size(sy.paren))
+ break;
+ if (vec_last(sy.paren) != PAREN_INDEX) {
+ parseerror(parser, "mismatched parentheses, unexpected ']'");
+ goto onerr;
+ }
+ if (!parser_close_paren(parser, &sy))
+ goto onerr;
+ wantop = true;
+ }
+ else if (!wantop) {
+ if (!parse_sya_operand(parser, &sy, with_labels))
+ goto onerr;
+#if 0
+ if (vec_size(sy.paren) && vec_last(sy.ops).isparen && vec_last(sy.paren) == PAREN_FUNC)
+ vec_last(sy.argc)++;
+#endif
+ wantop = true;
+ }
+ else {
+ /* in this case we might want to allow constant string concatenation */
+ bool concatenated = false;
+ if (parser->tok == TOKEN_STRINGCONST && vec_size(sy.out)) {
+ ast_expression *lexpr = vec_last(sy.out).out;
+ if (ast_istype(lexpr, ast_value)) {
+ ast_value *last = (ast_value*)lexpr;
+ if (last->isimm == true && last->cvq == CV_CONST &&
+ last->hasvalue && last->expression.vtype == TYPE_STRING)
+ {
+ char *newstr = NULL;
+ util_asprintf(&newstr, "%s%s", last->constval.vstring, parser_tokval(parser));
+ vec_last(sy.out).out = (ast_expression*)parser_const_string(parser, newstr, false);
+ mem_d(newstr);
+ concatenated = true;
+ }
+ }
+ }
+ if (!concatenated) {
+ parseerror(parser, "expected operator or end of statement");
+ goto onerr;
+ }
+ }
+
+ if (!parser_next(parser)) {
+ goto onerr;
+ }
+ if (parser->tok == ';' ||
+ ((!vec_size(sy.paren) || (vec_size(sy.paren) == 1 && vec_last(sy.paren) == PAREN_TERNARY2)) &&
+ (parser->tok == ']' || parser->tok == ')' || parser->tok == '}')))
+ {
+ break;
+ }
+ }
+
+ while (vec_size(sy.ops)) {
+ if (!parser_sy_apply_operator(parser, &sy))
+ goto onerr;
+ }
+
+ parser->lex->flags.noops = true;
+ if (vec_size(sy.out) != 1) {
+ parseerror(parser, "expression with not 1 but %lu output values...", (unsigned long) vec_size(sy.out));
+ expr = NULL;
+ } else
+ expr = sy.out[0].out;
+ vec_free(sy.out);
+ vec_free(sy.ops);
+ if (vec_size(sy.paren)) {
+ parseerror(parser, "internal error: vec_size(sy.paren) = %lu", (unsigned long)vec_size(sy.paren));
+ return NULL;
+ }
+ vec_free(sy.paren);
+ vec_free(sy.argc);
+ return expr;
+
+onerr:
+ parser->lex->flags.noops = true;
+ for (i = 0; i < vec_size(sy.out); ++i) {
+ if (sy.out[i].out)
+ ast_unref(sy.out[i].out);
+ }
+ vec_free(sy.out);
+ vec_free(sy.ops);
+ vec_free(sy.paren);
+ vec_free(sy.argc);
+ return NULL;
+}
+
+static ast_expression* parse_expression(parser_t *parser, bool stopatcomma, bool with_labels)
+{
+ ast_expression *e = parse_expression_leave(parser, stopatcomma, false, with_labels);
+ if (!e)
+ return NULL;
+ if (parser->tok != ';') {
+ parseerror(parser, "semicolon expected after expression");
+ ast_unref(e);
+ return NULL;
+ }
+ if (!parser_next(parser)) {
+ ast_unref(e);
+ return NULL;
+ }
+ return e;
+}
+
+static void parser_enterblock(parser_t *parser)
+{
+ vec_push(parser->variables, util_htnew(PARSER_HT_SIZE));
+ vec_push(parser->_blocklocals, vec_size(parser->_locals));
+ vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
+ vec_push(parser->_blocktypedefs, vec_size(parser->_typedefs));
+ vec_push(parser->_block_ctx, parser_ctx(parser));
+
+ /* corrector */
+ vec_push(parser->correct_variables, correct_trie_new());
+ vec_push(parser->correct_variables_score, NULL);
+}
+
+static bool parser_leaveblock(parser_t *parser)
+{
+ bool rv = true;
+ size_t locals, typedefs;
+
+ if (vec_size(parser->variables) <= PARSER_HT_LOCALS) {
+ parseerror(parser, "internal error: parser_leaveblock with no block");
+ return false;
+ }
+
+ util_htdel(vec_last(parser->variables));
+ correct_del(vec_last(parser->correct_variables), vec_last(parser->correct_variables_score));
+
+ vec_pop(parser->variables);
+ vec_pop(parser->correct_variables);
+ vec_pop(parser->correct_variables_score);
+ if (!vec_size(parser->_blocklocals)) {
+ parseerror(parser, "internal error: parser_leaveblock with no block (2)");
+ return false;
+ }
+
+ locals = vec_last(parser->_blocklocals);
+ vec_pop(parser->_blocklocals);
+ while (vec_size(parser->_locals) != locals) {
+ ast_expression *e = vec_last(parser->_locals);
+ ast_value *v = (ast_value*)e;
+ vec_pop(parser->_locals);
+ if (ast_istype(e, ast_value) && !v->uses) {
+ if (compile_warning(ast_ctx(v), WARN_UNUSED_VARIABLE, "unused variable: `%s`", v->name))
+ rv = false;
+ }
+ }
+
+ typedefs = vec_last(parser->_blocktypedefs);
+ while (vec_size(parser->_typedefs) != typedefs) {
+ ast_delete(vec_last(parser->_typedefs));
+ vec_pop(parser->_typedefs);
+ }
+ util_htdel(vec_last(parser->typedefs));
+ vec_pop(parser->typedefs);
+
+ vec_pop(parser->_block_ctx);
+
+ return rv;
+}
+
+static void parser_addlocal(parser_t *parser, const char *name, ast_expression *e)
+{
+ vec_push(parser->_locals, e);
+ util_htset(vec_last(parser->variables), name, (void*)e);
+
+ /* corrector */
+ correct_add (
+ vec_last(parser->correct_variables),
+ &vec_last(parser->correct_variables_score),
+ name
+ );
+}
+
+static void parser_addglobal(parser_t *parser, const char *name, ast_expression *e)
+{
+ vec_push(parser->globals, e);
+ util_htset(parser->htglobals, name, e);
+
+ /* corrector */
+ correct_add (
+ parser->correct_variables[0],
+ &parser->correct_variables_score[0],
+ name
+ );
+}
+
+static ast_expression* process_condition(parser_t *parser, ast_expression *cond, bool *_ifnot)
+{
+ bool ifnot = false;
+ ast_unary *unary;
+ ast_expression *prev;
+
+ if (cond->vtype == TYPE_VOID || cond->vtype >= TYPE_VARIANT) {
+ char ty[1024];
+ ast_type_to_string(cond, ty, sizeof(ty));
+ compile_error(ast_ctx(cond), "invalid type for if() condition: %s", ty);
+ }
+
+ if (OPTS_FLAG(FALSE_EMPTY_STRINGS) && cond->vtype == TYPE_STRING)
+ {
+ prev = cond;
+ cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_S, cond);
+ if (!cond) {
+ ast_unref(prev);
+ parseerror(parser, "internal error: failed to process condition");
+ return NULL;
+ }
+ ifnot = !ifnot;
+ }
+ else if (OPTS_FLAG(CORRECT_LOGIC) && cond->vtype == TYPE_VECTOR)
+ {
+ /* vector types need to be cast to true booleans */
+ ast_binary *bin = (ast_binary*)cond;
+ if (!OPTS_FLAG(PERL_LOGIC) || !ast_istype(cond, ast_binary) || !(bin->op == INSTR_AND || bin->op == INSTR_OR))
+ {
+ /* in perl-logic, AND and OR take care of the -fcorrect-logic */
+ prev = cond;
+ cond = (ast_expression*)ast_unary_new(ast_ctx(cond), INSTR_NOT_V, cond);
+ if (!cond) {
+ ast_unref(prev);
+ parseerror(parser, "internal error: failed to process condition");
+ return NULL;
+ }
+ ifnot = !ifnot;
+ }
+ }
+
+ unary = (ast_unary*)cond;
+ while (ast_istype(cond, ast_unary) && unary->op == INSTR_NOT_F)
+ {
+ cond = unary->operand;
+ unary->operand = NULL;
+ ast_delete(unary);
+ ifnot = !ifnot;
+ unary = (ast_unary*)cond;
+ }
+
+ if (!cond)
+ parseerror(parser, "internal error: failed to process condition");
+
+ if (ifnot) *_ifnot = !*_ifnot;
+ return cond;
+}
+
+static bool parse_if(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_ifthen *ifthen;
+ ast_expression *cond, *ontrue = NULL, *onfalse = NULL;
+ bool ifnot = false;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+
+ /* skip the 'if', parse an optional 'not' and check for an opening paren */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected condition or 'not'");
+ return false;
+ }
+ if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "not")) {
+ ifnot = true;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected condition in parenthesis");
+ return false;
+ }
+ }
+ if (parser->tok != '(') {
+ parseerror(parser, "expected 'if' condition in parenthesis");
+ return false;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'if' condition after opening paren");
+ return false;
+ }
+ /* parse the condition */
+ cond = parse_expression_leave(parser, false, true, false);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'if' condition");
+ ast_unref(cond);
+ return false;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected statement for on-true branch of 'if'");
+ ast_unref(cond);
+ return false;
+ }
+ if (!parse_statement_or_block(parser, &ontrue)) {
+ ast_unref(cond);
+ return false;
+ }
+ if (!ontrue)
+ ontrue = (ast_expression*)ast_block_new(parser_ctx(parser));
+ /* check for an else */
+ if (!strcmp(parser_tokval(parser), "else")) {
+ /* parse into the 'else' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected on-false branch after 'else'");
+ ast_delete(ontrue);
+ ast_unref(cond);
+ return false;
+ }
+ if (!parse_statement_or_block(parser, &onfalse)) {
+ ast_delete(ontrue);
+ ast_unref(cond);
+ return false;
+ }
+ }
+
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond) {
+ if (ontrue) ast_delete(ontrue);
+ if (onfalse) ast_delete(onfalse);
+ return false;
+ }
+
+ if (ifnot)
+ ifthen = ast_ifthen_new(ctx, cond, onfalse, ontrue);
+ else
+ ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
+ *out = (ast_expression*)ifthen;
+ return true;
+}
+
+static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out);
+static bool parse_while(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ bool rv;
+ char *label = NULL;
+
+ /* skip the 'while' and get the body */
+ if (!parser_next(parser)) {
+ if (OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "expected loop label or 'while' condition in parenthesis");
+ else
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ return false;
+ }
+
+ if (parser->tok == ':') {
+ if (!OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "labeled loops not activated, try using -floop-labels");
+ if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected loop label");
+ return false;
+ }
+ label = util_strdup(parser_tokval(parser));
+ if (!parser_next(parser)) {
+ mem_d(label);
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ return false;
+ }
+ }
+
+ if (parser->tok != '(') {
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ return false;
+ }
+
+ vec_push(parser->breaks, label);
+ vec_push(parser->continues, label);
+
+ rv = parse_while_go(parser, block, out);
+ if (label)
+ mem_d(label);
+ if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
+ parseerror(parser, "internal error: label stack corrupted");
+ rv = false;
+ ast_delete(*out);
+ *out = NULL;
+ }
+ else {
+ vec_pop(parser->breaks);
+ vec_pop(parser->continues);
+ }
+ return rv;
+}
+
+static bool parse_while_go(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *cond, *ontrue;
+
+ bool ifnot = false;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'while' condition after opening paren");
+ return false;
+ }
+ /* parse the condition */
+ cond = parse_expression_leave(parser, false, true, false);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'while' condition");
+ ast_unref(cond);
+ return false;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected while-loop body");
+ ast_unref(cond);
+ return false;
+ }
+ if (!parse_statement_or_block(parser, &ontrue)) {
+ ast_unref(cond);
+ return false;
+ }
+
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond) {
+ ast_unref(ontrue);
+ return false;
+ }
+ aloop = ast_loop_new(ctx, NULL, cond, ifnot, NULL, false, NULL, ontrue);
+ *out = (ast_expression*)aloop;
+ return true;
+}
+
+static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out);
+static bool parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ bool rv;
+ char *label = NULL;
+
+ /* skip the 'do' and get the body */
+ if (!parser_next(parser)) {
+ if (OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "expected loop label or body");
+ else
+ parseerror(parser, "expected loop body");
+ return false;
+ }
+
+ if (parser->tok == ':') {
+ if (!OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "labeled loops not activated, try using -floop-labels");
+ if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected loop label");
+ return false;
+ }
+ label = util_strdup(parser_tokval(parser));
+ if (!parser_next(parser)) {
+ mem_d(label);
+ parseerror(parser, "expected loop body");
+ return false;
+ }
+ }
+
+ vec_push(parser->breaks, label);
+ vec_push(parser->continues, label);
+
+ rv = parse_dowhile_go(parser, block, out);
+ if (label)
+ mem_d(label);
+ if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
+ parseerror(parser, "internal error: label stack corrupted");
+ rv = false;
+ ast_delete(*out);
+ *out = NULL;
+ }
+ else {
+ vec_pop(parser->breaks);
+ vec_pop(parser->continues);
+ }
+ return rv;
+}
+
+static bool parse_dowhile_go(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *cond, *ontrue;
+
+ bool ifnot = false;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+
+ if (!parse_statement_or_block(parser, &ontrue))
+ return false;
+
+ /* expect the "while" */
+ if (parser->tok != TOKEN_KEYWORD ||
+ strcmp(parser_tokval(parser), "while"))
+ {
+ parseerror(parser, "expected 'while' and condition");
+ ast_delete(ontrue);
+ return false;
+ }
+
+ /* skip the 'while' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ ast_delete(ontrue);
+ return false;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'while' condition after opening paren");
+ ast_delete(ontrue);
+ return false;
+ }
+ /* parse the condition */
+ cond = parse_expression_leave(parser, false, true, false);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'while' condition");
+ ast_delete(ontrue);
+ ast_unref(cond);
+ return false;
+ }
+ /* parse on */
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "expected semicolon after condition");
+ ast_delete(ontrue);
+ ast_unref(cond);
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error");
+ ast_delete(ontrue);
+ ast_unref(cond);
+ return false;
+ }
+
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond) {
+ ast_delete(ontrue);
+ return false;
+ }
+ aloop = ast_loop_new(ctx, NULL, NULL, false, cond, ifnot, NULL, ontrue);
+ *out = (ast_expression*)aloop;
+ return true;
+}
+
+static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out);
+static bool parse_for(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ bool rv;
+ char *label = NULL;
+
+ /* skip the 'for' and check for opening paren */
+ if (!parser_next(parser)) {
+ if (OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "expected loop label or 'for' expressions in parenthesis");
+ else
+ parseerror(parser, "expected 'for' expressions in parenthesis");
+ return false;
+ }
+
+ if (parser->tok == ':') {
+ if (!OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "labeled loops not activated, try using -floop-labels");
+ if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected loop label");
+ return false;
+ }
+ label = util_strdup(parser_tokval(parser));
+ if (!parser_next(parser)) {
+ mem_d(label);
+ parseerror(parser, "expected 'for' expressions in parenthesis");
+ return false;
+ }
+ }
+
+ if (parser->tok != '(') {
+ parseerror(parser, "expected 'for' expressions in parenthesis");
+ return false;
+ }
+
+ vec_push(parser->breaks, label);
+ vec_push(parser->continues, label);
+
+ rv = parse_for_go(parser, block, out);
+ if (label)
+ mem_d(label);
+ if (vec_last(parser->breaks) != label || vec_last(parser->continues) != label) {
+ parseerror(parser, "internal error: label stack corrupted");
+ rv = false;
+ ast_delete(*out);
+ *out = NULL;
+ }
+ else {
+ vec_pop(parser->breaks);
+ vec_pop(parser->continues);
+ }
+ return rv;
+}
+static bool parse_for_go(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *initexpr, *cond, *increment, *ontrue;
+ ast_value *typevar;
+
+ bool ifnot = false;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ parser_enterblock(parser);
+
+ initexpr = NULL;
+ cond = NULL;
+ increment = NULL;
+ ontrue = NULL;
+
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'for' initializer after opening paren");
+ goto onerr;
+ }
+
+ typevar = NULL;
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (typevar || parser->tok == TOKEN_TYPENAME) {
+#if 0
+ if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS,
+ "current standard does not allow variable declarations in for-loop initializers"))
+ goto onerr;
+ }
+#endif
+ if (!parse_variable(parser, block, true, CV_VAR, typevar, false, false, 0, NULL))
+ goto onerr;
+ }
+ else if (parser->tok != ';')
+ {
+ initexpr = parse_expression_leave(parser, false, false, false);
+ if (!initexpr)
+ goto onerr;
+ }
+
+ /* move on to condition */
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon after for-loop initializer");
+ goto onerr;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected for-loop condition");
+ goto onerr;
+ }
+
+ /* parse the condition */
+ if (parser->tok != ';') {
+ cond = parse_expression_leave(parser, false, true, false);
+ if (!cond)
+ goto onerr;
+ }
+
+ /* move on to incrementor */
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon after for-loop initializer");
+ goto onerr;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected for-loop condition");
+ goto onerr;
+ }
+
+ /* parse the incrementor */
+ if (parser->tok != ')') {
+ lex_ctx condctx = parser_ctx(parser);
+ increment = parse_expression_leave(parser, false, false, false);
+ if (!increment)
+ goto onerr;
+ if (!ast_side_effects(increment)) {
+ if (compile_warning(condctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
+ goto onerr;
+ }
+ }
+
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'for-loop' incrementor");
+ goto onerr;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected for-loop body");
+ goto onerr;
+ }
+ if (!parse_statement_or_block(parser, &ontrue))
+ goto onerr;
+
+ if (cond) {
+ cond = process_condition(parser, cond, &ifnot);
+ if (!cond)
+ goto onerr;
+ }
+ aloop = ast_loop_new(ctx, initexpr, cond, ifnot, NULL, false, increment, ontrue);
+ *out = (ast_expression*)aloop;
+
+ if (!parser_leaveblock(parser)) {
+ ast_delete(aloop);
+ return false;
+ }
+ return true;
+onerr:
+ if (initexpr) ast_unref(initexpr);
+ if (cond) ast_unref(cond);
+ if (increment) ast_unref(increment);
+ (void)!parser_leaveblock(parser);
+ return false;
+}
+
+static bool parse_return(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_expression *exp = NULL;
+ ast_expression *var = NULL;
+ ast_return *ret = NULL;
+ ast_value *retval = parser->function->return_value;
+ ast_value *expected = parser->function->vtype;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected return expression");
+ return false;
+ }
+
+ /* return assignments */
+ if (parser->tok == '=') {
+ if (!OPTS_FLAG(RETURN_ASSIGNMENTS)) {
+ parseerror(parser, "return assignments not activated, try using -freturn-assigments");
+ return false;
+ }
+
+ if (type_store_instr[expected->expression.next->vtype] == VINSTR_END) {
+ char ty1[1024];
+ ast_type_to_string(expected->expression.next, ty1, sizeof(ty1));
+ parseerror(parser, "invalid return type: `%s'", ty1);
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected return assignment expression");
+ return false;
+ }
+
+ if (!(exp = parse_expression_leave(parser, false, false, false)))
+ return false;
+
+ /* prepare the return value */
+ if (!retval) {
+ retval = ast_value_new(ctx, "#LOCAL_RETURN", TYPE_VOID);
+ ast_type_adopt(retval, expected->expression.next);
+ parser->function->return_value = retval;
+ }
+
+ if (!ast_compare_type(exp, (ast_expression*)retval)) {
+ char ty1[1024], ty2[1024];
+ ast_type_to_string(exp, ty1, sizeof(ty1));
+ ast_type_to_string(&retval->expression, ty2, sizeof(ty2));
+ parseerror(parser, "invalid type for return value: `%s', expected `%s'", ty1, ty2);
+ }
+
+ /* store to 'return' local variable */
+ var = (ast_expression*)ast_store_new(
+ ctx,
+ type_store_instr[expected->expression.next->vtype],
+ (ast_expression*)retval, exp);
+
+ if (!var) {
+ ast_unref(exp);
+ return false;
+ }
+
+ if (parser->tok != ';')
+ parseerror(parser, "missing semicolon after return assignment");
+ else if (!parser_next(parser))
+ parseerror(parser, "parse error after return assignment");
+
+ *out = var;
+ return true;
+ }
+
+ if (parser->tok != ';') {
+ exp = parse_expression(parser, false, false);
+ if (!exp)
+ return false;
+
+ if (exp->vtype != TYPE_NIL &&
+ exp->vtype != ((ast_expression*)expected)->next->vtype)
+ {
+ parseerror(parser, "return with invalid expression");
+ }
+
+ ret = ast_return_new(ctx, exp);
+ if (!ret) {
+ ast_unref(exp);
+ return false;
+ }
+ } else {
+ if (!parser_next(parser))
+ parseerror(parser, "parse error");
+
+ if (!retval && expected->expression.next->vtype != TYPE_VOID)
+ {
+ (void)!parsewarning(parser, WARN_MISSING_RETURN_VALUES, "return without value");
+ }
+ ret = ast_return_new(ctx, (ast_expression*)retval);
+ }
+ *out = (ast_expression*)ret;
+ return true;
+}
+
+static bool parse_break_continue(parser_t *parser, ast_block *block, ast_expression **out, bool is_continue)
+{
+ size_t i;
+ unsigned int levels = 0;
+ lex_ctx ctx = parser_ctx(parser);
+ const char **loops = (is_continue ? parser->continues : parser->breaks);
+
+ (void)block; /* not touching */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected semicolon or loop label");
+ return false;
+ }
+
+ if (!vec_size(loops)) {
+ if (is_continue)
+ parseerror(parser, "`continue` can only be used inside loops");
+ else
+ parseerror(parser, "`break` can only be used inside loops or switches");
+ }
+
+ if (parser->tok == TOKEN_IDENT) {
+ if (!OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "labeled loops not activated, try using -floop-labels");
+ i = vec_size(loops);
+ while (i--) {
+ if (loops[i] && !strcmp(loops[i], parser_tokval(parser)))
+ break;
+ if (!i) {
+ parseerror(parser, "no such loop to %s: `%s`",
+ (is_continue ? "continue" : "break out of"),
+ parser_tokval(parser));
+ return false;
+ }
+ ++levels;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected semicolon");
+ return false;
+ }
+ }
+
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon");
+ return false;
+ }
+
+ if (!parser_next(parser))
+ parseerror(parser, "parse error");
+
+ *out = (ast_expression*)ast_breakcont_new(ctx, is_continue, levels);
+ return true;
+}
+
+/* returns true when it was a variable qualifier, false otherwise!
+ * on error, cvq is set to CV_WRONG
+ */
+static bool parse_qualifiers(parser_t *parser, bool with_local, int *cvq, bool *noref, bool *is_static, uint32_t *_flags, char **message)
+{
+ bool had_const = false;
+ bool had_var = false;
+ bool had_noref = false;
+ bool had_attrib = false;
+ bool had_static = false;
+ uint32_t flags = 0;
+
+ *cvq = CV_NONE;
+ for (;;) {
+ if (parser->tok == TOKEN_ATTRIBUTE_OPEN) {
+ had_attrib = true;
+ /* parse an attribute */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected attribute after `[[`");
+ *cvq = CV_WRONG;
+ return false;
+ }
+ if (!strcmp(parser_tokval(parser), "noreturn")) {
+ flags |= AST_FLAG_NORETURN;
+ if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ parseerror(parser, "`noreturn` attribute has no parameters, expected `]]`");
+ *cvq = CV_WRONG;
+ return false;
+ }
+ }
+ else if (!strcmp(parser_tokval(parser), "noref")) {
+ had_noref = true;
+ if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
+ *cvq = CV_WRONG;
+ return false;
+ }
+ }
+ else if (!strcmp(parser_tokval(parser), "inline")) {
+ flags |= AST_FLAG_INLINE;
+ if (!parser_next(parser) || parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ parseerror(parser, "`noref` attribute has no parameters, expected `]]`");
+ *cvq = CV_WRONG;
+ return false;
+ }
+ }
+ else if (!strcmp(parser_tokval(parser), "alias") && !(flags & AST_FLAG_ALIAS)) {
+ flags |= AST_FLAG_ALIAS;
+ *message = NULL;
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error in attribute");
+ goto argerr;
+ }
+
+ if (parser->tok == '(') {
+ if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
+ parseerror(parser, "`alias` attribute missing parameter");
+ goto argerr;
+ }
+
+ *message = util_strdup(parser_tokval(parser));
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error in attribute");
+ goto argerr;
+ }
+
+ if (parser->tok != ')') {
+ parseerror(parser, "`alias` attribute expected `)` after parameter");
+ goto argerr;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error in attribute");
+ goto argerr;
+ }
+ }
+
+ if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ parseerror(parser, "`alias` attribute expected `]]`");
+ goto argerr;
+ }
+ }
+ else if (!strcmp(parser_tokval(parser), "deprecated") && !(flags & AST_FLAG_DEPRECATED)) {
+ flags |= AST_FLAG_DEPRECATED;
+ *message = NULL;
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error in attribute");
+ goto argerr;
+ }
+
+ if (parser->tok == '(') {
+ if (!parser_next(parser) || parser->tok != TOKEN_STRINGCONST) {
+ parseerror(parser, "`deprecated` attribute missing parameter");
+ goto argerr;
+ }
+
+ *message = util_strdup(parser_tokval(parser));
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error in attribute");
+ goto argerr;
+ }
+
+ if(parser->tok != ')') {
+ parseerror(parser, "`deprecated` attribute expected `)` after parameter");
+ goto argerr;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error in attribute");
+ goto argerr;
+ }
+ }
+ /* no message */
+ if (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ parseerror(parser, "`deprecated` attribute expected `]]`");
+
+ argerr: /* ugly */
+ if (*message) mem_d(*message);
+ *message = NULL;
+ *cvq = CV_WRONG;
+ return false;
+ }
+ }
+ else
+ {
+ /* Skip tokens until we hit a ]] */
+ (void)!parsewarning(parser, WARN_UNKNOWN_ATTRIBUTE, "unknown attribute starting with `%s`", parser_tokval(parser));
+ while (parser->tok != TOKEN_ATTRIBUTE_CLOSE) {
+ if (!parser_next(parser)) {
+ parseerror(parser, "error inside attribute");
+ *cvq = CV_WRONG;
+ return false;
+ }
+ }
+ }
+ }
+ else if (with_local && !strcmp(parser_tokval(parser), "static"))
+ had_static = true;
+ else if (!strcmp(parser_tokval(parser), "const"))
+ had_const = true;
+ else if (!strcmp(parser_tokval(parser), "var"))
+ had_var = true;
+ else if (with_local && !strcmp(parser_tokval(parser), "local"))
+ had_var = true;
+ else if (!strcmp(parser_tokval(parser), "noref"))
+ had_noref = true;
+ else if (!had_const && !had_var && !had_noref && !had_attrib && !had_static && !flags) {
+ return false;
+ }
+ else
+ break;
+ if (!parser_next(parser))
+ goto onerr;
+ }
+ if (had_const)
+ *cvq = CV_CONST;
+ else if (had_var)
+ *cvq = CV_VAR;
+ else
+ *cvq = CV_NONE;
+ *noref = had_noref;
+ *is_static = had_static;
+ *_flags = flags;
+ return true;
+onerr:
+ parseerror(parser, "parse error after variable qualifier");
+ *cvq = CV_WRONG;
+ return true;
+}
+
+static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out);
+static bool parse_switch(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ bool rv;
+ char *label = NULL;
+
+ /* skip the 'while' and get the body */
+ if (!parser_next(parser)) {
+ if (OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "expected loop label or 'switch' operand in parenthesis");
+ else
+ parseerror(parser, "expected 'switch' operand in parenthesis");
+ return false;
+ }
+
+ if (parser->tok == ':') {
+ if (!OPTS_FLAG(LOOP_LABELS))
+ parseerror(parser, "labeled loops not activated, try using -floop-labels");
+ if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected loop label");
+ return false;
+ }
+ label = util_strdup(parser_tokval(parser));
+ if (!parser_next(parser)) {
+ mem_d(label);
+ parseerror(parser, "expected 'switch' operand in parenthesis");
+ return false;
+ }
+ }
+
+ if (parser->tok != '(') {
+ parseerror(parser, "expected 'switch' operand in parenthesis");
+ return false;
+ }
+
+ vec_push(parser->breaks, label);
+
+ rv = parse_switch_go(parser, block, out);
+ if (label)
+ mem_d(label);
+ if (vec_last(parser->breaks) != label) {
+ parseerror(parser, "internal error: label stack corrupted");
+ rv = false;
+ ast_delete(*out);
+ *out = NULL;
+ }
+ else {
+ vec_pop(parser->breaks);
+ }
+ return rv;
+}
+
+static bool parse_switch_go(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_expression *operand;
+ ast_value *opval;
+ ast_value *typevar;
+ ast_switch *switchnode;
+ ast_switch_case swcase;
+
+ int cvq;
+ bool noref, is_static;
+ uint32_t qflags = 0;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ (void)block; /* not touching */
+ (void)opval;
+
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected switch operand");
+ return false;
+ }
+ /* parse the operand */
+ operand = parse_expression_leave(parser, false, false, false);
+ if (!operand)
+ return false;
+
+ switchnode = ast_switch_new(ctx, operand);
+
+ /* closing paren */
+ if (parser->tok != ')') {
+ ast_delete(switchnode);
+ parseerror(parser, "expected closing paren after 'switch' operand");
+ return false;
+ }
+
+ /* parse over the opening paren */
+ if (!parser_next(parser) || parser->tok != '{') {
+ ast_delete(switchnode);
+ parseerror(parser, "expected list of cases");
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected 'case' or 'default'");
+ return false;
+ }
+
+ /* new block; allow some variables to be declared here */
+ parser_enterblock(parser);
+ while (true) {
+ typevar = NULL;
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+ if (typevar || parser->tok == TOKEN_TYPENAME) {
+ if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ continue;
+ }
+ if (parse_qualifiers(parser, true, &cvq, &noref, &is_static, &qflags, NULL))
+ {
+ if (cvq == CV_WRONG) {
+ ast_delete(switchnode);
+ return false;
+ }
+ if (!parse_variable(parser, block, false, cvq, NULL, noref, is_static, qflags, NULL)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ continue;
+ }
+ break;
+ }
+
+ /* case list! */
+ while (parser->tok != '}') {
+ ast_block *caseblock;
+
+ if (!strcmp(parser_tokval(parser), "case")) {
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected expression for case");
+ return false;
+ }
+ swcase.value = parse_expression_leave(parser, false, false, false);
+ if (!swcase.value) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected expression for case");
+ return false;
+ }
+ if (!OPTS_FLAG(RELAXED_SWITCH)) {
+ if (!ast_istype(swcase.value, ast_value)) { /* || ((ast_value*)swcase.value)->cvq != CV_CONST) { */
+ parseerror(parser, "case on non-constant values need to be explicitly enabled via -frelaxed-switch");
+ ast_unref(operand);
+ return false;
+ }
+ }
+ }
+ else if (!strcmp(parser_tokval(parser), "default")) {
+ swcase.value = NULL;
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "expected colon");
+ return false;
+ }
+ }
+ else {
+ ast_delete(switchnode);
+ parseerror(parser, "expected 'case' or 'default'");
+ return false;
+ }
+
+ /* Now the colon and body */
+ if (parser->tok != ':') {
+ if (swcase.value) ast_unref(swcase.value);
+ ast_delete(switchnode);
+ parseerror(parser, "expected colon");
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ if (swcase.value) ast_unref(swcase.value);
+ ast_delete(switchnode);
+ parseerror(parser, "expected statements or case");
+ return false;
+ }
+ caseblock = ast_block_new(parser_ctx(parser));
+ if (!caseblock) {
+ if (swcase.value) ast_unref(swcase.value);
+ ast_delete(switchnode);
+ return false;
+ }
+ swcase.code = (ast_expression*)caseblock;
+ vec_push(switchnode->cases, swcase);
+ while (true) {
+ ast_expression *expr;
+ if (parser->tok == '}')
+ break;
+ if (parser->tok == TOKEN_KEYWORD) {
+ if (!strcmp(parser_tokval(parser), "case") ||
+ !strcmp(parser_tokval(parser), "default"))
+ {
+ break;
+ }
+ }
+ if (!parse_statement(parser, caseblock, &expr, true)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ if (!expr)
+ continue;
+ if (!ast_block_add_expr(caseblock, expr)) {
+ ast_delete(switchnode);
+ return false;
+ }
+ }
+ }
+
+ parser_leaveblock(parser);
+
+ /* closing paren */
+ if (parser->tok != '}') {
+ ast_delete(switchnode);
+ parseerror(parser, "expected closing paren of case list");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ ast_delete(switchnode);
+ parseerror(parser, "parse error after switch");
+ return false;
+ }
+ *out = (ast_expression*)switchnode;
+ return true;
+}
+
+/* parse computed goto sides */
+static ast_expression *parse_goto_computed(parser_t *parser, ast_expression **side) {
+ ast_expression *on_true;
+ ast_expression *on_false;
+ ast_expression *cond;
+
+ if (!*side)
+ return NULL;
+
+ if (ast_istype(*side, ast_ternary)) {
+ ast_ternary *tern = (ast_ternary*)*side;
+ on_true = parse_goto_computed(parser, &tern->on_true);
+ on_false = parse_goto_computed(parser, &tern->on_false);
+
+ if (!on_true || !on_false) {
+ parseerror(parser, "expected label or expression in ternary");
+ if (on_true) ast_unref(on_true);
+ if (on_false) ast_unref(on_false);
+ return NULL;
+ }
+
+ cond = tern->cond;
+ tern->cond = NULL;
+ ast_delete(tern);
+ *side = NULL;
+ return (ast_expression*)ast_ifthen_new(parser_ctx(parser), cond, on_true, on_false);
+ } else if (ast_istype(*side, ast_label)) {
+ ast_goto *gt = ast_goto_new(parser_ctx(parser), ((ast_label*)*side)->name);
+ ast_goto_set_label(gt, ((ast_label*)*side));
+ *side = NULL;
+ return (ast_expression*)gt;
+ }
+ return NULL;
+}
+
+static bool parse_goto(parser_t *parser, ast_expression **out)
+{
+ ast_goto *gt = NULL;
+ ast_expression *lbl;
+
+ if (!parser_next(parser))
+ return false;
+
+ if (parser->tok != TOKEN_IDENT) {
+ ast_expression *expression;
+
+ /* could be an expression i.e computed goto :-) */
+ if (parser->tok != '(') {
+ parseerror(parser, "expected label name after `goto`");
+ return false;
+ }
+
+ /* failed to parse expression for goto */
+ if (!(expression = parse_expression(parser, false, true)) ||
+ !(*out = parse_goto_computed(parser, &expression))) {
+ parseerror(parser, "invalid goto expression");
+ ast_unref(expression);
+ return false;
+ }
+
+ return true;
+ }
+
+ /* not computed goto */
+ gt = ast_goto_new(parser_ctx(parser), parser_tokval(parser));
+ lbl = parser_find_label(parser, gt->name);
+ if (lbl) {
+ if (!ast_istype(lbl, ast_label)) {
+ parseerror(parser, "internal error: label is not an ast_label");
+ ast_delete(gt);
+ return false;
+ }
+ ast_goto_set_label(gt, (ast_label*)lbl);
+ }
+ else
+ vec_push(parser->gotos, gt);
+
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "semicolon expected after goto label");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after goto");
+ return false;
+ }
+
+ *out = (ast_expression*)gt;
+ return true;
+}
+
+static bool parse_skipwhite(parser_t *parser)
+{
+ do {
+ if (!parser_next(parser))
+ return false;
+ } while (parser->tok == TOKEN_WHITE && parser->tok < TOKEN_ERROR);
+ return parser->tok < TOKEN_ERROR;
+}
+
+static bool parse_eol(parser_t *parser)
+{
+ if (!parse_skipwhite(parser))
+ return false;
+ return parser->tok == TOKEN_EOL;
+}
+
+static bool parse_pragma_do(parser_t *parser)
+{
+ if (!parser_next(parser) ||
+ parser->tok != TOKEN_IDENT ||
+ strcmp(parser_tokval(parser), "pragma"))
+ {
+ parseerror(parser, "expected `pragma` keyword after `#`, got `%s`", parser_tokval(parser));
+ return false;
+ }
+ if (!parse_skipwhite(parser) || parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected pragma, got `%s`", parser_tokval(parser));
+ return false;
+ }
+
+ if (!strcmp(parser_tokval(parser), "noref")) {
+ if (!parse_skipwhite(parser) || parser->tok != TOKEN_INTCONST) {
+ parseerror(parser, "`noref` pragma requires an argument: 0 or 1");
+ return false;
+ }
+ parser->noref = !!parser_token(parser)->constval.i;
+ if (!parse_eol(parser)) {
+ parseerror(parser, "parse error after `noref` pragma");
+ return false;
+ }
+ }
+ else
+ {
+ (void)!parsewarning(parser, WARN_UNKNOWN_PRAGMAS, "ignoring #pragma %s", parser_tokval(parser));
+ return false;
+ }
+
+ return true;
+}
+
+static bool parse_pragma(parser_t *parser)
+{
+ bool rv;
+ parser->lex->flags.preprocessing = true;
+ parser->lex->flags.mergelines = true;
+ rv = parse_pragma_do(parser);
+ if (parser->tok != TOKEN_EOL) {
+ parseerror(parser, "junk after pragma");
+ rv = false;
+ }
+ parser->lex->flags.preprocessing = false;
+ parser->lex->flags.mergelines = false;
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after pragma");
+ rv = false;
+ }
+ return rv;
+}
+
+static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out, bool allow_cases)
+{
+ bool noref, is_static;
+ int cvq = CV_NONE;
+ uint32_t qflags = 0;
+ ast_value *typevar = NULL;
+ char *vstring = NULL;
+
+ *out = NULL;
+
+ if (parser->tok == TOKEN_IDENT)
+ typevar = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (typevar || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
+ {
+ /* local variable */
+ if (!block) {
+ parseerror(parser, "cannot declare a variable from here");
+ return false;
+ }
+ if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
+ return false;
+ }
+ if (!parse_variable(parser, block, false, CV_NONE, typevar, false, false, 0, NULL))
+ return false;
+ return true;
+ }
+ else if (parse_qualifiers(parser, !!block, &cvq, &noref, &is_static, &qflags, &vstring))
+ {
+ if (cvq == CV_WRONG)
+ return false;
+ return parse_variable(parser, block, true, cvq, NULL, noref, is_static, qflags, vstring);
+ }
+ else if (parser->tok == TOKEN_KEYWORD)
+ {
+ if (!strcmp(parser_tokval(parser), "__builtin_debug_printtype"))
+ {
+ char ty[1024];
+ ast_value *tdef;
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after __builtin_debug_printtype");
+ return false;
+ }
+
+ if (parser->tok == TOKEN_IDENT && (tdef = parser_find_typedef(parser, parser_tokval(parser), 0)))
+ {
+ ast_type_to_string((ast_expression*)tdef, ty, sizeof(ty));
+ con_out("__builtin_debug_printtype: `%s`=`%s`\n", tdef->name, ty);
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after __builtin_debug_printtype typename argument");
+ return false;
+ }
+ }
+ else
+ {
+ if (!parse_statement(parser, block, out, allow_cases))
+ return false;
+ if (!*out)
+ con_out("__builtin_debug_printtype: got no output node\n");
+ else
+ {
+ ast_type_to_string(*out, ty, sizeof(ty));
+ con_out("__builtin_debug_printtype: `%s`\n", ty);
+ }
+ }
+ return true;
+ }
+ else if (!strcmp(parser_tokval(parser), "return"))
+ {
+ return parse_return(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "if"))
+ {
+ return parse_if(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "while"))
+ {
+ return parse_while(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "do"))
+ {
+ return parse_dowhile(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "for"))
+ {
+ if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "for loops are not recognized in the original Quake C standard, to enable try an alternate standard --std=?"))
+ return false;
+ }
+ return parse_for(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "break"))
+ {
+ return parse_break_continue(parser, block, out, false);
+ }
+ else if (!strcmp(parser_tokval(parser), "continue"))
+ {
+ return parse_break_continue(parser, block, out, true);
+ }
+ else if (!strcmp(parser_tokval(parser), "switch"))
+ {
+ return parse_switch(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "case") ||
+ !strcmp(parser_tokval(parser), "default"))
+ {
+ if (!allow_cases) {
+ parseerror(parser, "unexpected 'case' label");
+ return false;
+ }
+ return true;
+ }
+ else if (!strcmp(parser_tokval(parser), "goto"))
+ {
+ return parse_goto(parser, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "typedef"))
+ {
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected type definition after 'typedef'");
+ return false;
+ }
+ return parse_typedef(parser);
+ }
+ parseerror(parser, "Unexpected keyword: `%s'", parser_tokval(parser));
+ return false;
+ }
+ else if (parser->tok == '{')
+ {
+ ast_block *inner;
+ inner = parse_block(parser);
+ if (!inner)
+ return false;
+ *out = (ast_expression*)inner;
+ return true;
+ }
+ else if (parser->tok == ':')
+ {
+ size_t i;
+ ast_label *label;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected label name");
+ return false;
+ }
+ if (parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "label must be an identifier");
+ return false;
+ }
+ label = (ast_label*)parser_find_label(parser, parser_tokval(parser));
+ if (label) {
+ if (!label->undefined) {
+ parseerror(parser, "label `%s` already defined", label->name);
+ return false;
+ }
+ label->undefined = false;
+ }
+ else {
+ label = ast_label_new(parser_ctx(parser), parser_tokval(parser), false);
+ vec_push(parser->labels, label);
+ }
+ *out = (ast_expression*)label;
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after label");
+ return false;
+ }
+ for (i = 0; i < vec_size(parser->gotos); ++i) {
+ if (!strcmp(parser->gotos[i]->name, label->name)) {
+ ast_goto_set_label(parser->gotos[i], label);
+ vec_remove(parser->gotos, i, 1);
+ --i;
+ }
+ }
+ return true;
+ }
+ else if (parser->tok == ';')
+ {
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after empty statement");
+ return false;
+ }
+ return true;
+ }
+ else
+ {
+ lex_ctx ctx = parser_ctx(parser);
+ ast_expression *exp = parse_expression(parser, false, false);
+ if (!exp)
+ return false;
+ *out = exp;
+ if (!ast_side_effects(exp)) {
+ if (compile_warning(ctx, WARN_EFFECTLESS_STATEMENT, "statement has no effect"))
+ return false;
+ }
+ return true;
+ }
+}
+
+static bool parse_enum(parser_t *parser)
+{
+ bool flag = false;
+ bool reverse = false;
+ qcfloat num = 0;
+ ast_value **values = NULL;
+ ast_value *var = NULL;
+ ast_value *asvalue;
+
+ ast_expression *old;
+
+ if (!parser_next(parser) || (parser->tok != '{' && parser->tok != ':')) {
+ parseerror(parser, "expected `{` or `:` after `enum` keyword");
+ return false;
+ }
+
+ /* enumeration attributes (can add more later) */
+ if (parser->tok == ':') {
+ if (!parser_next(parser) || parser->tok != TOKEN_IDENT){
+ parseerror(parser, "expected `flag` or `reverse` for enumeration attribute");
+ return false;
+ }
+
+ /* attributes? */
+ if (!strcmp(parser_tokval(parser), "flag")) {
+ num = 1;
+ flag = true;
+ }
+ else if (!strcmp(parser_tokval(parser), "reverse")) {
+ reverse = true;
+ }
+ else {
+ parseerror(parser, "invalid attribute `%s` for enumeration", parser_tokval(parser));
+ return false;
+ }
+
+ if (!parser_next(parser) || parser->tok != '{') {
+ parseerror(parser, "expected `{` after enum attribute ");
+ return false;
+ }
+ }
+
+ while (true) {
+ if (!parser_next(parser) || parser->tok != TOKEN_IDENT) {
+ if (parser->tok == '}') {
+ /* allow an empty enum */
+ break;
+ }
+ parseerror(parser, "expected identifier or `}`");
+ goto onerror;
+ }
+
+ old = parser_find_field(parser, parser_tokval(parser));
+ if (!old)
+ old = parser_find_global(parser, parser_tokval(parser));
+ if (old) {
+ parseerror(parser, "value `%s` has already been declared here: %s:%i",
+ parser_tokval(parser), ast_ctx(old).file, ast_ctx(old).line);
+ goto onerror;
+ }
+
+ var = ast_value_new(parser_ctx(parser), parser_tokval(parser), TYPE_FLOAT);
+ vec_push(values, var);
+ var->cvq = CV_CONST;
+ var->hasvalue = true;
+
+ /* for flagged enumerations increment in POTs of TWO */
+ var->constval.vfloat = (flag) ? (num *= 2) : (num ++);
+ parser_addglobal(parser, var->name, (ast_expression*)var);
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected `=`, `}` or comma after identifier");
+ goto onerror;
+ }
+
+ if (parser->tok == ',')
+ continue;
+ if (parser->tok == '}')
+ break;
+ if (parser->tok != '=') {
+ parseerror(parser, "expected `=`, `}` or comma after identifier");
+ goto onerror;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected expression after `=`");
+ goto onerror;
+ }
+
+ /* We got a value! */
+ old = parse_expression_leave(parser, true, false, false);
+ asvalue = (ast_value*)old;
+ if (!ast_istype(old, ast_value) || asvalue->cvq != CV_CONST || !asvalue->hasvalue) {
+ compile_error(ast_ctx(var), "constant value or expression expected");
+ goto onerror;
+ }
+ num = (var->constval.vfloat = asvalue->constval.vfloat) + 1;
+
+ if (parser->tok == '}')
+ break;
+ if (parser->tok != ',') {
+ parseerror(parser, "expected `}` or comma after expression");
+ goto onerror;
+ }
+ }
+
+ /* patch them all (for reversed attribute) */
+ if (reverse) {
+ size_t i;
+ for (i = 0; i < vec_size(values); i++)
+ values[i]->constval.vfloat = vec_size(values) - i - 1;
+ }
+
+ if (parser->tok != '}') {
+ parseerror(parser, "internal error: breaking without `}`");
+ goto onerror;
+ }
+
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "expected semicolon after enumeration");
+ goto onerror;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after enumeration");
+ goto onerror;
+ }
+
+ vec_free(values);
+ return true;
+
+onerror:
+ vec_free(values);
+ return false;
+}
+
+static bool parse_block_into(parser_t *parser, ast_block *block)
+{
+ bool retval = true;
+
+ parser_enterblock(parser);
+
+ if (!parser_next(parser)) { /* skip the '{' */
+ parseerror(parser, "expected function body");
+ goto cleanup;
+ }
+
+ while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
+ {
+ ast_expression *expr = NULL;
+ if (parser->tok == '}')
+ break;
+
+ if (!parse_statement(parser, block, &expr, false)) {
+ /* parseerror(parser, "parse error"); */
+ block = NULL;
+ goto cleanup;
+ }
+ if (!expr)
+ continue;
+ if (!ast_block_add_expr(block, expr)) {
+ ast_delete(block);
+ block = NULL;
+ goto cleanup;
+ }
+ }
+
+ if (parser->tok != '}') {
+ block = NULL;
+ } else {
+ (void)parser_next(parser);
+ }
+
+cleanup:
+ if (!parser_leaveblock(parser))
+ retval = false;
+ return retval && !!block;
+}
+
+static ast_block* parse_block(parser_t *parser)
+{
+ ast_block *block;
+ block = ast_block_new(parser_ctx(parser));
+ if (!block)
+ return NULL;
+ if (!parse_block_into(parser, block)) {
+ ast_block_delete(block);
+ return NULL;
+ }
+ return block;
+}
+
+static bool parse_statement_or_block(parser_t *parser, ast_expression **out)
+{
+ if (parser->tok == '{') {
+ *out = (ast_expression*)parse_block(parser);
+ return !!*out;
+ }
+ return parse_statement(parser, NULL, out, false);
+}
+
+static bool create_vector_members(ast_value *var, ast_member **me)
+{
+ size_t i;
+ size_t len = strlen(var->name);
+
+ for (i = 0; i < 3; ++i) {
+ char *name = (char*)mem_a(len+3);
+ memcpy(name, var->name, len);
+ name[len+0] = '_';
+ name[len+1] = 'x'+i;
+ name[len+2] = 0;
+ me[i] = ast_member_new(ast_ctx(var), (ast_expression*)var, i, name);
+ mem_d(name);
+ if (!me[i])
+ break;
+ }
+ if (i == 3)
+ return true;
+
+ /* unroll */
+ do { ast_member_delete(me[--i]); } while(i);
+ return false;
+}
+
+static bool parse_function_body(parser_t *parser, ast_value *var)
+{
+ ast_block *block = NULL;
+ ast_function *func;
+ ast_function *old;
+ size_t parami;
+
+ ast_expression *framenum = NULL;
+ ast_expression *nextthink = NULL;
+ /* None of the following have to be deleted */
+ ast_expression *fld_think = NULL, *fld_nextthink = NULL, *fld_frame = NULL;
+ ast_expression *gbl_time = NULL, *gbl_self = NULL;
+ bool has_frame_think;
+
+ bool retval = true;
+
+ has_frame_think = false;
+ old = parser->function;
+
+ if (var->expression.flags & AST_FLAG_ALIAS) {
+ parseerror(parser, "function aliases cannot have bodies");
+ return false;
+ }
+
+ if (vec_size(parser->gotos) || vec_size(parser->labels)) {
+ parseerror(parser, "gotos/labels leaking");
+ return false;
+ }
+
+ if (!OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
+ if (parsewarning(parser, WARN_VARIADIC_FUNCTION,
+ "variadic function with implementation will not be able to access additional parameters (try -fvariadic-args)"))
+ {
+ return false;
+ }
+ }
+
+ if (parser->tok == '[') {
+ /* got a frame definition: [ framenum, nextthink ]
+ * this translates to:
+ * self.frame = framenum;
+ * self.nextthink = time + 0.1;
+ * self.think = nextthink;
+ */
+ nextthink = NULL;
+
+ fld_think = parser_find_field(parser, "think");
+ fld_nextthink = parser_find_field(parser, "nextthink");
+ fld_frame = parser_find_field(parser, "frame");
+ if (!fld_think || !fld_nextthink || !fld_frame) {
+ parseerror(parser, "cannot use [frame,think] notation without the required fields");
+ parseerror(parser, "please declare the following entityfields: `frame`, `think`, `nextthink`");
+ return false;
+ }
+ gbl_time = parser_find_global(parser, "time");
+ gbl_self = parser_find_global(parser, "self");
+ if (!gbl_time || !gbl_self) {
+ parseerror(parser, "cannot use [frame,think] notation without the required globals");
+ parseerror(parser, "please declare the following globals: `time`, `self`");
+ return false;
+ }
+
+ if (!parser_next(parser))
+ return false;
+
+ framenum = parse_expression_leave(parser, true, false, false);
+ if (!framenum) {
+ parseerror(parser, "expected a framenumber constant in[frame,think] notation");
+ return false;
+ }
+ if (!ast_istype(framenum, ast_value) || !( (ast_value*)framenum )->hasvalue) {
+ ast_unref(framenum);
+ parseerror(parser, "framenumber in [frame,think] notation must be a constant");
+ return false;
+ }
+
+ if (parser->tok != ',') {
+ ast_unref(framenum);
+ parseerror(parser, "expected comma after frame number in [frame,think] notation");
+ parseerror(parser, "Got a %i\n", parser->tok);
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ ast_unref(framenum);
+ return false;
+ }
+
+ if (parser->tok == TOKEN_IDENT && !parser_find_var(parser, parser_tokval(parser)))
+ {
+ /* qc allows the use of not-yet-declared functions here
+ * - this automatically creates a prototype */
+ ast_value *thinkfunc;
+ ast_expression *functype = fld_think->next;
+
+ thinkfunc = ast_value_new(parser_ctx(parser), parser_tokval(parser), functype->vtype);
+ if (!thinkfunc) { /* || !ast_type_adopt(thinkfunc, functype)*/
+ ast_unref(framenum);
+ parseerror(parser, "failed to create implicit prototype for `%s`", parser_tokval(parser));
+ return false;
+ }
+ ast_type_adopt(thinkfunc, functype);
+
+ if (!parser_next(parser)) {
+ ast_unref(framenum);
+ ast_delete(thinkfunc);
+ return false;
+ }
+
+ parser_addglobal(parser, thinkfunc->name, (ast_expression*)thinkfunc);
+
+ nextthink = (ast_expression*)thinkfunc;
+
+ } else {
+ nextthink = parse_expression_leave(parser, true, false, false);
+ if (!nextthink) {
+ ast_unref(framenum);
+ parseerror(parser, "expected a think-function in [frame,think] notation");
+ return false;
+ }
+ }
+
+ if (!ast_istype(nextthink, ast_value)) {
+ parseerror(parser, "think-function in [frame,think] notation must be a constant");
+ retval = false;
+ }
+
+ if (retval && parser->tok != ']') {
+ parseerror(parser, "expected closing `]` for [frame,think] notation");
+ retval = false;
+ }
+
+ if (retval && !parser_next(parser)) {
+ retval = false;
+ }
+
+ if (retval && parser->tok != '{') {
+ parseerror(parser, "a function body has to be declared after a [frame,think] declaration");
+ retval = false;
+ }
+
+ if (!retval) {
+ ast_unref(nextthink);
+ ast_unref(framenum);
+ return false;
+ }
+
+ has_frame_think = true;
+ }
+
+ block = ast_block_new(parser_ctx(parser));
+ if (!block) {
+ parseerror(parser, "failed to allocate block");
+ if (has_frame_think) {
+ ast_unref(nextthink);
+ ast_unref(framenum);
+ }
+ return false;
+ }
+
+ if (has_frame_think) {
+ lex_ctx ctx;
+ ast_expression *self_frame;
+ ast_expression *self_nextthink;
+ ast_expression *self_think;
+ ast_expression *time_plus_1;
+ ast_store *store_frame;
+ ast_store *store_nextthink;
+ ast_store *store_think;
+
+ ctx = parser_ctx(parser);
+ self_frame = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_frame);
+ self_nextthink = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_nextthink);
+ self_think = (ast_expression*)ast_entfield_new(ctx, gbl_self, fld_think);
+
+ time_plus_1 = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F,
+ gbl_time, (ast_expression*)parser_const_float(parser, 0.1));
+
+ if (!self_frame || !self_nextthink || !self_think || !time_plus_1) {
+ if (self_frame) ast_delete(self_frame);
+ if (self_nextthink) ast_delete(self_nextthink);
+ if (self_think) ast_delete(self_think);
+ if (time_plus_1) ast_delete(time_plus_1);
+ retval = false;
+ }
+
+ if (retval)
+ {
+ store_frame = ast_store_new(ctx, INSTR_STOREP_F, self_frame, framenum);
+ store_nextthink = ast_store_new(ctx, INSTR_STOREP_F, self_nextthink, time_plus_1);
+ store_think = ast_store_new(ctx, INSTR_STOREP_FNC, self_think, nextthink);
+
+ if (!store_frame) {
+ ast_delete(self_frame);
+ retval = false;
+ }
+ if (!store_nextthink) {
+ ast_delete(self_nextthink);
+ retval = false;
+ }
+ if (!store_think) {
+ ast_delete(self_think);
+ retval = false;
+ }
+ if (!retval) {
+ if (store_frame) ast_delete(store_frame);
+ if (store_nextthink) ast_delete(store_nextthink);
+ if (store_think) ast_delete(store_think);
+ retval = false;
+ }
+ if (!ast_block_add_expr(block, (ast_expression*)store_frame) ||
+ !ast_block_add_expr(block, (ast_expression*)store_nextthink) ||
+ !ast_block_add_expr(block, (ast_expression*)store_think))
+ {
+ retval = false;
+ }
+ }
+
+ if (!retval) {
+ parseerror(parser, "failed to generate code for [frame,think]");
+ ast_unref(nextthink);
+ ast_unref(framenum);
+ ast_delete(block);
+ return false;
+ }
+ }
+
+ if (var->hasvalue) {
+ parseerror(parser, "function `%s` declared with multiple bodies", var->name);
+ ast_block_delete(block);
+ goto enderr;
+ }
+
+ func = ast_function_new(ast_ctx(var), var->name, var);
+ if (!func) {
+ parseerror(parser, "failed to allocate function for `%s`", var->name);
+ ast_block_delete(block);
+ goto enderr;
+ }
+ vec_push(parser->functions, func);
+
+ parser_enterblock(parser);
+
+ for (parami = 0; parami < vec_size(var->expression.params); ++parami) {
+ size_t e;
+ ast_value *param = var->expression.params[parami];
+ ast_member *me[3];
+
+ if (param->expression.vtype != TYPE_VECTOR &&
+ (param->expression.vtype != TYPE_FIELD ||
+ param->expression.next->vtype != TYPE_VECTOR))
+ {
+ continue;
+ }
+
+ if (!create_vector_members(param, me)) {
+ ast_block_delete(block);
+ goto enderrfn;
+ }
+
+ for (e = 0; e < 3; ++e) {
+ parser_addlocal(parser, me[e]->name, (ast_expression*)me[e]);
+ ast_block_collect(block, (ast_expression*)me[e]);
+ }
+ }
+
+ if (var->argcounter) {
+ ast_value *argc = ast_value_new(ast_ctx(var), var->argcounter, TYPE_FLOAT);
+ parser_addlocal(parser, argc->name, (ast_expression*)argc);
+ func->argc = argc;
+ }
+
+ if (OPTS_FLAG(VARIADIC_ARGS) && var->expression.flags & AST_FLAG_VARIADIC) {
+ char name[1024];
+ ast_value *varargs = ast_value_new(ast_ctx(var), "reserved:va_args", TYPE_ARRAY);
+ varargs->expression.flags |= AST_FLAG_IS_VARARG;
+ varargs->expression.next = (ast_expression*)ast_value_new(ast_ctx(var), NULL, TYPE_VECTOR);
+ varargs->expression.count = 0;
+ util_snprintf(name, sizeof(name), "%s##va##SET", var->name);
+ if (!parser_create_array_setter_proto(parser, varargs, name)) {
+ ast_delete(varargs);
+ ast_block_delete(block);
+ goto enderrfn;
+ }
+ util_snprintf(name, sizeof(name), "%s##va##GET", var->name);
+ if (!parser_create_array_getter_proto(parser, varargs, varargs->expression.next, name)) {
+ ast_delete(varargs);
+ ast_block_delete(block);
+ goto enderrfn;
+ }
+ func->varargs = varargs;
+
+ func->fixedparams = parser_const_float(parser, vec_size(var->expression.params));
+ }
+
+ parser->function = func;
+ if (!parse_block_into(parser, block)) {
+ ast_block_delete(block);
+ goto enderrfn;
+ }
+
+ vec_push(func->blocks, block);
+
+
+ parser->function = old;
+ if (!parser_leaveblock(parser))
+ retval = false;
+ if (vec_size(parser->variables) != PARSER_HT_LOCALS) {
+ parseerror(parser, "internal error: local scopes left");
+ retval = false;
+ }
+
+ if (parser->tok == ';')
+ return parser_next(parser);
+ else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
+ parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
+ return retval;
+
+enderrfn:
+ (void)!parser_leaveblock(parser);
+ vec_pop(parser->functions);
+ ast_function_delete(func);
+ var->constval.vfunc = NULL;
+
+enderr:
+ parser->function = old;
+ return false;
+}
+
+static ast_expression *array_accessor_split(
+ parser_t *parser,
+ ast_value *array,
+ ast_value *index,
+ size_t middle,
+ ast_expression *left,
+ ast_expression *right
+ )
+{
+ ast_ifthen *ifthen;
+ ast_binary *cmp;
+
+ lex_ctx ctx = ast_ctx(array);
+
+ if (!left || !right) {
+ if (left) ast_delete(left);
+ if (right) ast_delete(right);
+ return NULL;
+ }
+
+ cmp = ast_binary_new(ctx, INSTR_LT,
+ (ast_expression*)index,
+ (ast_expression*)parser_const_float(parser, middle));
+ if (!cmp) {
+ ast_delete(left);
+ ast_delete(right);
+ parseerror(parser, "internal error: failed to create comparison for array setter");
+ return NULL;
+ }
+
+ ifthen = ast_ifthen_new(ctx, (ast_expression*)cmp, left, right);
+ if (!ifthen) {
+ ast_delete(cmp); /* will delete left and right */
+ parseerror(parser, "internal error: failed to create conditional jump for array setter");
+ return NULL;
+ }
+
+ return (ast_expression*)ifthen;
+}
+
+static ast_expression *array_setter_node(parser_t *parser, ast_value *array, ast_value *index, ast_value *value, size_t from, size_t afterend)
+{
+ lex_ctx ctx = ast_ctx(array);
+
+ if (from+1 == afterend) {
+ /* set this value */
+ ast_block *block;
+ ast_return *ret;
+ ast_array_index *subscript;
+ ast_store *st;
+ int assignop = type_store_instr[value->expression.vtype];
+
+ if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
+ assignop = INSTR_STORE_V;
+
+ subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
+ if (!subscript)
+ return NULL;
+
+ st = ast_store_new(ctx, assignop, (ast_expression*)subscript, (ast_expression*)value);
+ if (!st) {
+ ast_delete(subscript);
+ return NULL;
+ }
+
+ block = ast_block_new(ctx);
+ if (!block) {
+ ast_delete(st);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)st)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ ret = ast_return_new(ctx, NULL);
+ if (!ret) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)ret)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ return (ast_expression*)block;
+ } else {
+ ast_expression *left, *right;
+ size_t diff = afterend - from;
+ size_t middle = from + diff/2;
+ left = array_setter_node(parser, array, index, value, from, middle);
+ right = array_setter_node(parser, array, index, value, middle, afterend);
+ return array_accessor_split(parser, array, index, middle, left, right);
+ }
+}
+
+static ast_expression *array_field_setter_node(
+ parser_t *parser,
+ ast_value *array,
+ ast_value *entity,
+ ast_value *index,
+ ast_value *value,
+ size_t from,
+ size_t afterend)
+{
+ lex_ctx ctx = ast_ctx(array);
+
+ if (from+1 == afterend) {
+ /* set this value */
+ ast_block *block;
+ ast_return *ret;
+ ast_entfield *entfield;
+ ast_array_index *subscript;
+ ast_store *st;
+ int assignop = type_storep_instr[value->expression.vtype];
+
+ if (value->expression.vtype == TYPE_FIELD && value->expression.next->vtype == TYPE_VECTOR)
+ assignop = INSTR_STOREP_V;
+
+ subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
+ if (!subscript)
+ return NULL;
+
+ subscript->expression.next = ast_type_copy(ast_ctx(subscript), (ast_expression*)subscript);
+ subscript->expression.vtype = TYPE_FIELD;
+
+ entfield = ast_entfield_new_force(ctx,
+ (ast_expression*)entity,
+ (ast_expression*)subscript,
+ (ast_expression*)subscript);
+ if (!entfield) {
+ ast_delete(subscript);
+ return NULL;
+ }
+
+ st = ast_store_new(ctx, assignop, (ast_expression*)entfield, (ast_expression*)value);
+ if (!st) {
+ ast_delete(entfield);
+ return NULL;
+ }
+
+ block = ast_block_new(ctx);
+ if (!block) {
+ ast_delete(st);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)st)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ ret = ast_return_new(ctx, NULL);
+ if (!ret) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ if (!ast_block_add_expr(block, (ast_expression*)ret)) {
+ ast_delete(block);
+ return NULL;
+ }
+
+ return (ast_expression*)block;
+ } else {
+ ast_expression *left, *right;
+ size_t diff = afterend - from;
+ size_t middle = from + diff/2;
+ left = array_field_setter_node(parser, array, entity, index, value, from, middle);
+ right = array_field_setter_node(parser, array, entity, index, value, middle, afterend);
+ return array_accessor_split(parser, array, index, middle, left, right);
+ }
+}
+
+static ast_expression *array_getter_node(parser_t *parser, ast_value *array, ast_value *index, size_t from, size_t afterend)
+{
+ lex_ctx ctx = ast_ctx(array);
+
+ if (from+1 == afterend) {
+ ast_return *ret;
+ ast_array_index *subscript;
+
+ subscript = ast_array_index_new(ctx, (ast_expression*)array, (ast_expression*)parser_const_float(parser, from));
+ if (!subscript)
+ return NULL;
+
+ ret = ast_return_new(ctx, (ast_expression*)subscript);
+ if (!ret) {
+ ast_delete(subscript);
+ return NULL;
+ }
+
+ return (ast_expression*)ret;
+ } else {
+ ast_expression *left, *right;
+ size_t diff = afterend - from;
+ size_t middle = from + diff/2;
+ left = array_getter_node(parser, array, index, from, middle);
+ right = array_getter_node(parser, array, index, middle, afterend);
+ return array_accessor_split(parser, array, index, middle, left, right);
+ }
+}
+
+static bool parser_create_array_accessor(parser_t *parser, ast_value *array, const char *funcname, ast_value **out)
+{
+ ast_function *func = NULL;
+ ast_value *fval = NULL;
+ ast_block *body = NULL;
+
+ fval = ast_value_new(ast_ctx(array), funcname, TYPE_FUNCTION);
+ if (!fval) {
+ parseerror(parser, "failed to create accessor function value");
+ return false;
+ }
+
+ func = ast_function_new(ast_ctx(array), funcname, fval);
+ if (!func) {
+ ast_delete(fval);
+ parseerror(parser, "failed to create accessor function node");
+ return false;
+ }
+
+ body = ast_block_new(ast_ctx(array));
+ if (!body) {
+ parseerror(parser, "failed to create block for array accessor");
+ ast_delete(fval);
+ ast_delete(func);
+ return false;
+ }
+
+ vec_push(func->blocks, body);
+ *out = fval;
+
+ vec_push(parser->accessors, fval);
+
+ return true;
+}
+
+static ast_value* parser_create_array_setter_proto(parser_t *parser, ast_value *array, const char *funcname)
+{
+ ast_value *index = NULL;
+ ast_value *value = NULL;
+ ast_function *func;
+ ast_value *fval;
+
+ if (!ast_istype(array->expression.next, ast_value)) {
+ parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
+ return NULL;
+ }
+
+ if (!parser_create_array_accessor(parser, array, funcname, &fval))
+ return NULL;
+ func = fval->constval.vfunc;
+ fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
+
+ index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
+ value = ast_value_copy((ast_value*)array->expression.next);
+
+ if (!index || !value) {
+ parseerror(parser, "failed to create locals for array accessor");
+ goto cleanup;
+ }
+ (void)!ast_value_set_name(value, "value"); /* not important */
+ vec_push(fval->expression.params, index);
+ vec_push(fval->expression.params, value);
+
+ array->setter = fval;
+ return fval;
+cleanup:
+ if (index) ast_delete(index);
+ if (value) ast_delete(value);
+ ast_delete(func);
+ ast_delete(fval);
+ return NULL;
+}
+
+static bool parser_create_array_setter_impl(parser_t *parser, ast_value *array)
+{
+ ast_expression *root = NULL;
+ root = array_setter_node(parser, array,
+ array->setter->expression.params[0],
+ array->setter->expression.params[1],
+ 0, array->expression.count);
+ if (!root) {
+ parseerror(parser, "failed to build accessor search tree");
+ return false;
+ }
+ if (!ast_block_add_expr(array->setter->constval.vfunc->blocks[0], root)) {
+ ast_delete(root);
+ return false;
+ }
+ return true;
+}
+
+static bool parser_create_array_setter(parser_t *parser, ast_value *array, const char *funcname)
+{
+ if (!parser_create_array_setter_proto(parser, array, funcname))
+ return false;
+ return parser_create_array_setter_impl(parser, array);
+}
+
+static bool parser_create_array_field_setter(parser_t *parser, ast_value *array, const char *funcname)
+{
+ ast_expression *root = NULL;
+ ast_value *entity = NULL;
+ ast_value *index = NULL;
+ ast_value *value = NULL;
+ ast_function *func;
+ ast_value *fval;
+
+ if (!ast_istype(array->expression.next, ast_value)) {
+ parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
+ return false;
+ }
+
+ if (!parser_create_array_accessor(parser, array, funcname, &fval))
+ return false;
+ func = fval->constval.vfunc;
+ fval->expression.next = (ast_expression*)ast_value_new(ast_ctx(array), "<void>", TYPE_VOID);
+
+ entity = ast_value_new(ast_ctx(array), "entity", TYPE_ENTITY);
+ index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
+ value = ast_value_copy((ast_value*)array->expression.next);
+ if (!entity || !index || !value) {
+ parseerror(parser, "failed to create locals for array accessor");
+ goto cleanup;
+ }
+ (void)!ast_value_set_name(value, "value"); /* not important */
+ vec_push(fval->expression.params, entity);
+ vec_push(fval->expression.params, index);
+ vec_push(fval->expression.params, value);
+
+ root = array_field_setter_node(parser, array, entity, index, value, 0, array->expression.count);
+ if (!root) {
+ parseerror(parser, "failed to build accessor search tree");
+ goto cleanup;
+ }
+
+ array->setter = fval;
+ return ast_block_add_expr(func->blocks[0], root);
+cleanup:
+ if (entity) ast_delete(entity);
+ if (index) ast_delete(index);
+ if (value) ast_delete(value);
+ if (root) ast_delete(root);
+ ast_delete(func);
+ ast_delete(fval);
+ return false;
+}
+
+static ast_value* parser_create_array_getter_proto(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
+{
+ ast_value *index = NULL;
+ ast_value *fval;
+ ast_function *func;
+
+ /* NOTE: checking array->expression.next rather than elemtype since
+ * for fields elemtype is a temporary fieldtype.
+ */
+ if (!ast_istype(array->expression.next, ast_value)) {
+ parseerror(parser, "internal error: array accessor needs to build an ast_value with a copy of the element type");
+ return NULL;
+ }
+
+ if (!parser_create_array_accessor(parser, array, funcname, &fval))
+ return NULL;
+ func = fval->constval.vfunc;
+ fval->expression.next = ast_type_copy(ast_ctx(array), elemtype);
+
+ index = ast_value_new(ast_ctx(array), "index", TYPE_FLOAT);
+
+ if (!index) {
+ parseerror(parser, "failed to create locals for array accessor");
+ goto cleanup;
+ }
+ vec_push(fval->expression.params, index);
+
+ array->getter = fval;
+ return fval;
+cleanup:
+ if (index) ast_delete(index);
+ ast_delete(func);
+ ast_delete(fval);
+ return NULL;
+}
+
+static bool parser_create_array_getter_impl(parser_t *parser, ast_value *array)
+{
+ ast_expression *root = NULL;
+
+ root = array_getter_node(parser, array, array->getter->expression.params[0], 0, array->expression.count);
+ if (!root) {
+ parseerror(parser, "failed to build accessor search tree");
+ return false;
+ }
+ if (!ast_block_add_expr(array->getter->constval.vfunc->blocks[0], root)) {
+ ast_delete(root);
+ return false;
+ }
+ return true;
+}
+
+static bool parser_create_array_getter(parser_t *parser, ast_value *array, const ast_expression *elemtype, const char *funcname)
+{
+ if (!parser_create_array_getter_proto(parser, array, elemtype, funcname))
+ return false;
+ return parser_create_array_getter_impl(parser, array);
+}
+
+static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef);
+static ast_value *parse_parameter_list(parser_t *parser, ast_value *var)
+{
+ lex_ctx ctx;
+ size_t i;
+ ast_value **params;
+ ast_value *param;
+ ast_value *fval;
+ bool first = true;
+ bool variadic = false;
+ ast_value *varparam = NULL;
+ char *argcounter = NULL;
+
+ ctx = parser_ctx(parser);
+
+ /* for the sake of less code we parse-in in this function */
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "expected parameter list");
+ return NULL;
+ }
+
+ params = NULL;
+
+ /* parse variables until we hit a closing paren */
+ while (parser->tok != ')') {
+ if (!first) {
+ /* there must be commas between them */
+ if (parser->tok != ',') {
+ parseerror(parser, "expected comma or end of parameter list");
+ goto on_error;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected parameter");
+ goto on_error;
+ }
+ }
+ first = false;
+
+ if (parser->tok == TOKEN_DOTS) {
+ /* '...' indicates a varargs function */
+ variadic = true;
+ if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
+ parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
+ goto on_error;
+ }
+ if (parser->tok == TOKEN_IDENT) {
+ argcounter = util_strdup(parser_tokval(parser));
+ if (!parser_next(parser) || parser->tok != ')') {
+ parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
+ goto on_error;
+ }
+ }
+ }
+ else
+ {
+ /* for anything else just parse a typename */
+ param = parse_typename(parser, NULL, NULL);
+ if (!param)
+ goto on_error;
+ vec_push(params, param);
+ if (param->expression.vtype >= TYPE_VARIANT) {
+ char tname[1024]; /* typename is reserved in C++ */
+ ast_type_to_string((ast_expression*)param, tname, sizeof(tname));
+ parseerror(parser, "type not supported as part of a parameter list: %s", tname);
+ goto on_error;
+ }
+ /* type-restricted varargs */
+ if (parser->tok == TOKEN_DOTS) {
+ variadic = true;
+ varparam = vec_last(params);
+ vec_pop(params);
+ if (!parser_next(parser) || (parser->tok != ')' && parser->tok != TOKEN_IDENT)) {
+ parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
+ goto on_error;
+ }
+ if (parser->tok == TOKEN_IDENT) {
+ argcounter = util_strdup(parser_tokval(parser));
+ if (!parser_next(parser) || parser->tok != ')') {
+ parseerror(parser, "`...` must be the last parameter of a variadic function declaration");
+ goto on_error;
+ }
+ }
+ }
+ }
+ }
+
+ if (vec_size(params) == 1 && params[0]->expression.vtype == TYPE_VOID)
+ vec_free(params);
+
+ /* sanity check */
+ if (vec_size(params) > 8 && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
+ (void)!parsewarning(parser, WARN_EXTENSIONS, "more than 8 parameters are not supported by this standard");
+
+ /* parse-out */
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after typename");
+ goto on_error;
+ }
+
+ /* now turn 'var' into a function type */
+ fval = ast_value_new(ctx, "<type()>", TYPE_FUNCTION);
+ fval->expression.next = (ast_expression*)var;
+ if (variadic)
+ fval->expression.flags |= AST_FLAG_VARIADIC;
+ var = fval;
+
+ var->expression.params = params;
+ var->expression.varparam = (ast_expression*)varparam;
+ var->argcounter = argcounter;
+ params = NULL;
+
+ return var;
+
+on_error:
+ if (argcounter)
+ mem_d(argcounter);
+ if (varparam)
+ ast_delete(varparam);
+ ast_delete(var);
+ for (i = 0; i < vec_size(params); ++i)
+ ast_delete(params[i]);
+ vec_free(params);
+ return NULL;
+}
+
+static ast_value *parse_arraysize(parser_t *parser, ast_value *var)
+{
+ ast_expression *cexp;
+ ast_value *cval, *tmp;
+ lex_ctx ctx;
+
+ ctx = parser_ctx(parser);
+
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "expected array-size");
+ return NULL;
+ }
+
+ cexp = parse_expression_leave(parser, true, false, false);
+
+ if (!cexp || !ast_istype(cexp, ast_value)) {
+ if (cexp)
+ ast_unref(cexp);
+ ast_delete(var);
+ parseerror(parser, "expected array-size as constant positive integer");
+ return NULL;
+ }
+ cval = (ast_value*)cexp;
+
+ tmp = ast_value_new(ctx, "<type[]>", TYPE_ARRAY);
+ tmp->expression.next = (ast_expression*)var;
+ var = tmp;
+
+ if (cval->expression.vtype == TYPE_INTEGER)
+ tmp->expression.count = cval->constval.vint;
+ else if (cval->expression.vtype == TYPE_FLOAT)
+ tmp->expression.count = cval->constval.vfloat;
+ else {
+ ast_unref(cexp);
+ ast_delete(var);
+ parseerror(parser, "array-size must be a positive integer constant");
+ return NULL;
+ }
+ ast_unref(cexp);
+
+ if (parser->tok != ']') {
+ ast_delete(var);
+ parseerror(parser, "expected ']' after array-size");
+ return NULL;
+ }
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "error after parsing array size");
+ return NULL;
+ }
+ return var;
+}
+
+/* Parse a complete typename.
+ * for single-variables (ie. function parameters or typedefs) storebase should be NULL
+ * but when parsing variables separated by comma
+ * 'storebase' should point to where the base-type should be kept.
+ * The base type makes up every bit of type information which comes *before* the
+ * variable name.
+ *
+ * The following will be parsed in its entirety:
+ * void() foo()
+ * The 'basetype' in this case is 'void()'
+ * and if there's a comma after it, say:
+ * void() foo(), bar
+ * then the type-information 'void()' can be stored in 'storebase'
+ */
+static ast_value *parse_typename(parser_t *parser, ast_value **storebase, ast_value *cached_typedef)
+{
+ ast_value *var, *tmp;
+ lex_ctx ctx;
+
+ const char *name = NULL;
+ bool isfield = false;
+ bool wasarray = false;
+ size_t morefields = 0;
+
+ ctx = parser_ctx(parser);
+
+ /* types may start with a dot */
+ if (parser->tok == '.') {
+ isfield = true;
+ /* if we parsed a dot we need a typename now */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected typename for field definition");
+ return NULL;
+ }
+
+ /* Further dots are handled seperately because they won't be part of the
+ * basetype
+ */
+ while (parser->tok == '.') {
+ ++morefields;
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected typename for field definition");
+ return NULL;
+ }
+ }
+ }
+ if (parser->tok == TOKEN_IDENT)
+ cached_typedef = parser_find_typedef(parser, parser_tokval(parser), 0);
+ if (!cached_typedef && parser->tok != TOKEN_TYPENAME) {
+ parseerror(parser, "expected typename");
+ return NULL;
+ }
+
+ /* generate the basic type value */
+ if (cached_typedef) {
+ var = ast_value_copy(cached_typedef);
+ ast_value_set_name(var, "<type(from_def)>");
+ } else
+ var = ast_value_new(ctx, "<type>", parser_token(parser)->constval.t);
+
+ for (; morefields; --morefields) {
+ tmp = ast_value_new(ctx, "<.type>", TYPE_FIELD);
+ tmp->expression.next = (ast_expression*)var;
+ var = tmp;
+ }
+
+ /* do not yet turn into a field - remember:
+ * .void() foo; is a field too
+ * .void()() foo; is a function
+ */
+
+ /* parse on */
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ parseerror(parser, "parse error after typename");
+ return NULL;
+ }
+
+ /* an opening paren now starts the parameter-list of a function
+ * this is where original-QC has parameter lists.
+ * We allow a single parameter list here.
+ * Much like fteqcc we don't allow `float()() x`
+ */
+ if (parser->tok == '(') {
+ var = parse_parameter_list(parser, var);
+ if (!var)
+ return NULL;
+ }
+
+ /* store the base if requested */
+ if (storebase) {
+ *storebase = ast_value_copy(var);
+ if (isfield) {
+ tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
+ tmp->expression.next = (ast_expression*)*storebase;
+ *storebase = tmp;
+ }
+ }
+
+ /* there may be a name now */
+ if (parser->tok == TOKEN_IDENT) {
+ name = util_strdup(parser_tokval(parser));
+ /* parse on */
+ if (!parser_next(parser)) {
+ ast_delete(var);
+ mem_d(name);
+ parseerror(parser, "error after variable or field declaration");
+ return NULL;
+ }
+ }
+
+ /* now this may be an array */
+ if (parser->tok == '[') {
+ wasarray = true;
+ var = parse_arraysize(parser, var);
+ if (!var) {
+ if (name) mem_d(name);
+ return NULL;
+ }
+ }
+
+ /* This is the point where we can turn it into a field */
+ if (isfield) {
+ /* turn it into a field if desired */
+ tmp = ast_value_new(ctx, "<type:f>", TYPE_FIELD);
+ tmp->expression.next = (ast_expression*)var;
+ var = tmp;
+ }
+
+ /* now there may be function parens again */
+ if (parser->tok == '(' && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
+ parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
+ if (parser->tok == '(' && wasarray)
+ parseerror(parser, "arrays as part of a return type is not supported");
+ while (parser->tok == '(') {
+ var = parse_parameter_list(parser, var);
+ if (!var) {
+ if (name) mem_d(name);
+ return NULL;
+ }
+ }
+
+ /* finally name it */
+ if (name) {
+ if (!ast_value_set_name(var, name)) {
+ ast_delete(var);
+ mem_d(name);
+ parseerror(parser, "internal error: failed to set name");
+ return NULL;
+ }
+ /* free the name, ast_value_set_name duplicates */
+ mem_d(name);
+ }
+
+ return var;
+}
+
+static bool parse_typedef(parser_t *parser)
+{
+ ast_value *typevar, *oldtype;
+ ast_expression *old;
+
+ typevar = parse_typename(parser, NULL, NULL);
+
+ if (!typevar)
+ return false;
+
+ if ( (old = parser_find_var(parser, typevar->name)) ) {
+ parseerror(parser, "cannot define a type with the same name as a variable: %s\n"
+ " -> `%s` has been declared here: %s:%i",
+ typevar->name, ast_ctx(old).file, ast_ctx(old).line);
+ ast_delete(typevar);
+ return false;
+ }
+
+ if ( (oldtype = parser_find_typedef(parser, typevar->name, vec_last(parser->_blocktypedefs))) ) {
+ parseerror(parser, "type `%s` has already been declared here: %s:%i",
+ typevar->name, ast_ctx(oldtype).file, ast_ctx(oldtype).line);
+ ast_delete(typevar);
+ return false;
+ }
+
+ vec_push(parser->_typedefs, typevar);
+ util_htset(vec_last(parser->typedefs), typevar->name, typevar);
+
+ if (parser->tok != ';') {
+ parseerror(parser, "expected semicolon after typedef");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after typedef");
+ return false;
+ }
+
+ return true;
+}
+
+static const char *cvq_to_str(int cvq) {
+ switch (cvq) {
+ case CV_NONE: return "none";
+ case CV_VAR: return "`var`";
+ case CV_CONST: return "`const`";
+ default: return "<INVALID>";
+ }
+}
+
+static bool parser_check_qualifiers(parser_t *parser, const ast_value *var, const ast_value *proto)
+{
+ bool av, ao;
+ if (proto->cvq != var->cvq) {
+ if (!(proto->cvq == CV_CONST && var->cvq == CV_NONE &&
+ !OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
+ parser->tok == '='))
+ {
+ return !parsewarning(parser, WARN_DIFFERENT_QUALIFIERS,
+ "`%s` declared with different qualifiers: %s\n"
+ " -> previous declaration here: %s:%i uses %s",
+ var->name, cvq_to_str(var->cvq),
+ ast_ctx(proto).file, ast_ctx(proto).line,
+ cvq_to_str(proto->cvq));
+ }
+ }
+ av = (var ->expression.flags & AST_FLAG_NORETURN);
+ ao = (proto->expression.flags & AST_FLAG_NORETURN);
+ if (!av != !ao) {
+ return !parsewarning(parser, WARN_DIFFERENT_ATTRIBUTES,
+ "`%s` declared with different attributes%s\n"
+ " -> previous declaration here: %s:%i",
+ var->name, (av ? ": noreturn" : ""),
+ ast_ctx(proto).file, ast_ctx(proto).line,
+ (ao ? ": noreturn" : ""));
+ }
+ return true;
+}
+
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields, int qualifier, ast_value *cached_typedef, bool noref, bool is_static, uint32_t qflags, char *vstring)
+{
+ ast_value *var;
+ ast_value *proto;
+ ast_expression *old;
+ bool was_end;
+ size_t i;
+
+ ast_value *basetype = NULL;
+ bool retval = true;
+ bool isparam = false;
+ bool isvector = false;
+ bool cleanvar = true;
+ bool wasarray = false;
+
+ ast_member *me[3] = { NULL, NULL, NULL };
+
+ if (!localblock && is_static)
+ parseerror(parser, "`static` qualifier is not supported in global scope");
+
+ /* get the first complete variable */
+ var = parse_typename(parser, &basetype, cached_typedef);
+ if (!var) {
+ if (basetype)
+ ast_delete(basetype);
+ return false;
+ }
+
+ while (true) {
+ proto = NULL;
+ wasarray = false;
+
+ /* Part 0: finish the type */
+ if (parser->tok == '(') {
+ if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
+ parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
+ var = parse_parameter_list(parser, var);
+ if (!var) {
+ retval = false;
+ goto cleanup;
+ }
+ }
+ /* we only allow 1-dimensional arrays */
+ if (parser->tok == '[') {
+ wasarray = true;
+ var = parse_arraysize(parser, var);
+ if (!var) {
+ retval = false;
+ goto cleanup;
+ }
+ }
+ if (parser->tok == '(' && wasarray) {
+ parseerror(parser, "arrays as part of a return type is not supported");
+ /* we'll still parse the type completely for now */
+ }
+ /* for functions returning functions */
+ while (parser->tok == '(') {
+ if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC)
+ parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
+ var = parse_parameter_list(parser, var);
+ if (!var) {
+ retval = false;
+ goto cleanup;
+ }
+ }
+
+ var->cvq = qualifier;
+ var->expression.flags |= qflags;
+
+ /*
+ * store the vstring back to var for alias and
+ * deprecation messages.
+ */
+ if (var->expression.flags & AST_FLAG_DEPRECATED ||
+ var->expression.flags & AST_FLAG_ALIAS)
+ var->desc = vstring;
+
+ /* Part 1:
+ * check for validity: (end_sys_..., multiple-definitions, prototypes, ...)
+ * Also: if there was a prototype, `var` will be deleted and set to `proto` which
+ * is then filled with the previous definition and the parameter-names replaced.
+ */
+ if (!strcmp(var->name, "nil")) {
+ if (OPTS_FLAG(UNTYPED_NIL)) {
+ if (!localblock || !OPTS_FLAG(PERMISSIVE))
+ parseerror(parser, "name `nil` not allowed (try -fpermissive)");
+ } else
+ (void)!parsewarning(parser, WARN_RESERVED_NAMES, "variable name `nil` is reserved");
+ }
+ if (!localblock) {
+ /* Deal with end_sys_ vars */
+ was_end = false;
+ if (!strcmp(var->name, "end_sys_globals")) {
+ var->uses++;
+ parser->crc_globals = vec_size(parser->globals);
+ was_end = true;
+ }
+ else if (!strcmp(var->name, "end_sys_fields")) {
+ var->uses++;
+ parser->crc_fields = vec_size(parser->fields);
+ was_end = true;
+ }
+ if (was_end && var->expression.vtype == TYPE_FIELD) {
+ if (parsewarning(parser, WARN_END_SYS_FIELDS,
+ "global '%s' hint should not be a field",
+ parser_tokval(parser)))
+ {
+ retval = false;
+ goto cleanup;
+ }
+ }
+
+ if (!nofields && var->expression.vtype == TYPE_FIELD)
+ {
+ /* deal with field declarations */
+ old = parser_find_field(parser, var->name);
+ if (old) {
+ if (parsewarning(parser, WARN_FIELD_REDECLARED, "field `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, (int)ast_ctx(old).line))
+ {
+ retval = false;
+ goto cleanup;
+ }
+ ast_delete(var);
+ var = NULL;
+ goto skipvar;
+ /*
+ parseerror(parser, "field `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ */
+ }
+ if ((OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC || OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_FTEQCC) &&
+ (old = parser_find_global(parser, var->name)))
+ {
+ parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
+ parseerror(parser, "field `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ }
+ }
+ else
+ {
+ /* deal with other globals */
+ old = parser_find_global(parser, var->name);
+ if (old && var->expression.vtype == TYPE_FUNCTION && old->vtype == TYPE_FUNCTION)
+ {
+ /* This is a function which had a prototype */
+ if (!ast_istype(old, ast_value)) {
+ parseerror(parser, "internal error: prototype is not an ast_value");
+ retval = false;
+ goto cleanup;
+ }
+ proto = (ast_value*)old;
+ proto->desc = var->desc;
+ if (!ast_compare_type((ast_expression*)proto, (ast_expression*)var)) {
+ parseerror(parser, "conflicting types for `%s`, previous declaration was here: %s:%i",
+ proto->name,
+ ast_ctx(proto).file, ast_ctx(proto).line);
+ retval = false;
+ goto cleanup;
+ }
+ /* we need the new parameter-names */
+ for (i = 0; i < vec_size(proto->expression.params); ++i)
+ ast_value_set_name(proto->expression.params[i], var->expression.params[i]->name);
+ if (!parser_check_qualifiers(parser, var, proto)) {
+ retval = false;
+ if (proto->desc)
+ mem_d(proto->desc);
+ proto = NULL;
+ goto cleanup;
+ }
+ proto->expression.flags |= var->expression.flags;
+ ast_delete(var);
+ var = proto;
+ }
+ else
+ {
+ /* other globals */
+ if (old) {
+ if (parsewarning(parser, WARN_DOUBLE_DECLARATION,
+ "global `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line))
+ {
+ retval = false;
+ goto cleanup;
+ }
+ proto = (ast_value*)old;
+ if (!ast_istype(old, ast_value)) {
+ parseerror(parser, "internal error: not an ast_value");
+ retval = false;
+ proto = NULL;
+ goto cleanup;
+ }
+ if (!parser_check_qualifiers(parser, var, proto)) {
+ retval = false;
+ proto = NULL;
+ goto cleanup;
+ }
+ proto->expression.flags |= var->expression.flags;
+ ast_delete(var);
+ var = proto;
+ }
+ if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC &&
+ (old = parser_find_field(parser, var->name)))
+ {
+ parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
+ parseerror(parser, "global `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ }
+ }
+ }
+ }
+ else /* it's not a global */
+ {
+ old = parser_find_local(parser, var->name, vec_size(parser->variables)-1, &isparam);
+ if (old && !isparam) {
+ parseerror(parser, "local `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ }
+ old = parser_find_local(parser, var->name, 0, &isparam);
+ if (old && isparam) {
+ if (parsewarning(parser, WARN_LOCAL_SHADOWS,
+ "local `%s` is shadowing a parameter", var->name))
+ {
+ parseerror(parser, "local `%s` already declared here: %s:%i",
+ var->name, ast_ctx(old).file, (int)ast_ctx(old).line);
+ retval = false;
+ goto cleanup;
+ }
+ if (OPTS_OPTION_U32(OPTION_STANDARD) != COMPILER_GMQCC) {
+ ast_delete(var);
+ var = NULL;
+ goto skipvar;
+ }
+ }
+ }
+
+ /* in a noref section we simply bump the usecount */
+ if (noref || parser->noref)
+ var->uses++;
+
+ /* Part 2:
+ * Create the global/local, and deal with vector types.
+ */
+ if (!proto) {
+ if (var->expression.vtype == TYPE_VECTOR)
+ isvector = true;
+ else if (var->expression.vtype == TYPE_FIELD &&
+ var->expression.next->vtype == TYPE_VECTOR)
+ isvector = true;
+
+ if (isvector) {
+ if (!create_vector_members(var, me)) {
+ retval = false;
+ goto cleanup;
+ }
+ }
+
+ if (!localblock) {
+ /* deal with global variables, fields, functions */
+ if (!nofields && var->expression.vtype == TYPE_FIELD && parser->tok != '=') {
+ var->isfield = true;
+ vec_push(parser->fields, (ast_expression*)var);
+ util_htset(parser->htfields, var->name, var);
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ vec_push(parser->fields, (ast_expression*)me[i]);
+ util_htset(parser->htfields, me[i]->name, me[i]);
+ }
+ }
+ }
+ else {
+ if (!(var->expression.flags & AST_FLAG_ALIAS)) {
+ parser_addglobal(parser, var->name, (ast_expression*)var);
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ parser_addglobal(parser, me[i]->name, (ast_expression*)me[i]);
+ }
+ }
+ } else {
+ ast_expression *find = parser_find_global(parser, var->desc);
+
+ if (!find) {
+ compile_error(parser_ctx(parser), "undeclared variable `%s` for alias `%s`", var->desc, var->name);
+ return false;
+ }
+
+ if (var->expression.vtype != find->vtype) {
+ char ty1[1024];
+ char ty2[1024];
+
+ ast_type_to_string(find, ty1, sizeof(ty1));
+ ast_type_to_string((ast_expression*)var, ty2, sizeof(ty2));
+
+ compile_error(parser_ctx(parser), "incompatible types `%s` and `%s` for alias `%s`",
+ ty1, ty2, var->name
+ );
+ return false;
+ }
+
+ /*
+ * add alias to aliases table and to corrector
+ * so corrections can apply for aliases as well.
+ */
+ util_htset(parser->aliases, var->name, find);
+
+ /*
+ * add to corrector so corrections can work
+ * even for aliases too.
+ */
+ correct_add (
+ vec_last(parser->correct_variables),
+ &vec_last(parser->correct_variables_score),
+ var->name
+ );
+
+ /* generate aliases for vector components */
+ if (isvector) {
+ char *buffer[3];
+
+ util_asprintf(&buffer[0], "%s_x", var->desc);
+ util_asprintf(&buffer[1], "%s_y", var->desc);
+ util_asprintf(&buffer[2], "%s_z", var->desc);
+
+ util_htset(parser->aliases, me[0]->name, parser_find_global(parser, buffer[0]));
+ util_htset(parser->aliases, me[1]->name, parser_find_global(parser, buffer[1]));
+ util_htset(parser->aliases, me[2]->name, parser_find_global(parser, buffer[2]));
+
+ mem_d(buffer[0]);
+ mem_d(buffer[1]);
+ mem_d(buffer[2]);
+
+ /*
+ * add to corrector so corrections can work
+ * even for aliases too.
+ */
+ correct_add (
+ vec_last(parser->correct_variables),
+ &vec_last(parser->correct_variables_score),
+ me[0]->name
+ );
+ correct_add (
+ vec_last(parser->correct_variables),
+ &vec_last(parser->correct_variables_score),
+ me[1]->name
+ );
+ correct_add (
+ vec_last(parser->correct_variables),
+ &vec_last(parser->correct_variables_score),
+ me[2]->name
+ );
+ }
+ }
+ }
+ } else {
+ if (is_static) {
+ /* a static adds itself to be generated like any other global
+ * but is added to the local namespace instead
+ */
+ char *defname = NULL;
+ size_t prefix_len, ln;
+
+ ln = strlen(parser->function->name);
+ vec_append(defname, ln, parser->function->name);
+
+ vec_append(defname, 2, "::");
+ /* remember the length up to here */
+ prefix_len = vec_size(defname);
+
+ /* Add it to the local scope */
+ util_htset(vec_last(parser->variables), var->name, (void*)var);
+
+ /* corrector */
+ correct_add (
+ vec_last(parser->correct_variables),
+ &vec_last(parser->correct_variables_score),
+ var->name
+ );
+
+ /* now rename the global */
+ ln = strlen(var->name);
+ vec_append(defname, ln, var->name);
+ ast_value_set_name(var, defname);
+
+ /* push it to the to-be-generated globals */
+ vec_push(parser->globals, (ast_expression*)var);
+
+ /* same game for the vector members */
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ util_htset(vec_last(parser->variables), me[i]->name, (void*)(me[i]));
+
+ /* corrector */
+ correct_add(
+ vec_last(parser->correct_variables),
+ &vec_last(parser->correct_variables_score),
+ me[i]->name
+ );
+
+ vec_shrinkto(defname, prefix_len);
+ ln = strlen(me[i]->name);
+ vec_append(defname, ln, me[i]->name);
+ ast_member_set_name(me[i], defname);
+
+ vec_push(parser->globals, (ast_expression*)me[i]);
+ }
+ }
+ vec_free(defname);
+ } else {
+ vec_push(localblock->locals, var);
+ parser_addlocal(parser, var->name, (ast_expression*)var);
+ if (isvector) {
+ for (i = 0; i < 3; ++i) {
+ parser_addlocal(parser, me[i]->name, (ast_expression*)me[i]);
+ ast_block_collect(localblock, (ast_expression*)me[i]);
+ }
+ }
+ }
+ }
+ }
+ me[0] = me[1] = me[2] = NULL;
+ cleanvar = false;
+ /* Part 2.2
+ * deal with arrays
+ */
+ if (var->expression.vtype == TYPE_ARRAY) {
+ char name[1024];
+ util_snprintf(name, sizeof(name), "%s##SET", var->name);
+ if (!parser_create_array_setter(parser, var, name))
+ goto cleanup;
+ util_snprintf(name, sizeof(name), "%s##GET", var->name);
+ if (!parser_create_array_getter(parser, var, var->expression.next, name))
+ goto cleanup;
+ }
+ else if (!localblock && !nofields &&
+ var->expression.vtype == TYPE_FIELD &&
+ var->expression.next->vtype == TYPE_ARRAY)
+ {
+ char name[1024];
+ ast_expression *telem;
+ ast_value *tfield;
+ ast_value *array = (ast_value*)var->expression.next;
+
+ if (!ast_istype(var->expression.next, ast_value)) {
+ parseerror(parser, "internal error: field element type must be an ast_value");
+ goto cleanup;
+ }
+
+ util_snprintf(name, sizeof(name), "%s##SETF", var->name);
+ if (!parser_create_array_field_setter(parser, array, name))
+ goto cleanup;
+
+ telem = ast_type_copy(ast_ctx(var), array->expression.next);
+ tfield = ast_value_new(ast_ctx(var), "<.type>", TYPE_FIELD);
+ tfield->expression.next = telem;
+ util_snprintf(name, sizeof(name), "%s##GETFP", var->name);
+ if (!parser_create_array_getter(parser, array, (ast_expression*)tfield, name)) {
+ ast_delete(tfield);
+ goto cleanup;
+ }
+ ast_delete(tfield);
+ }
+
+skipvar:
+ if (parser->tok == ';') {
+ ast_delete(basetype);
+ if (!parser_next(parser)) {
+ parseerror(parser, "error after variable declaration");
+ return false;
+ }
+ return true;
+ }
+
+ if (parser->tok == ',')
+ goto another;
+
+ /*
+ if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
+ */
+ if (!var) {
+ parseerror(parser, "missing comma or semicolon while parsing variables");
+ break;
+ }
+
+ if (localblock && OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_LOCAL_CONSTANTS,
+ "initializing expression turns variable `%s` into a constant in this standard",
+ var->name) )
+ {
+ break;
+ }
+ }
+
+ if (parser->tok != '{' || var->expression.vtype != TYPE_FUNCTION) {
+ if (parser->tok != '=') {
+ parseerror(parser, "missing semicolon or initializer, got: `%s`", parser_tokval(parser));
+ break;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "error parsing initializer");
+ break;
+ }
+ }
+ else if (OPTS_OPTION_U32(OPTION_STANDARD) == COMPILER_QCC) {
+ parseerror(parser, "expected '=' before function body in this standard");
+ }
+
+ if (parser->tok == '#') {
+ ast_function *func = NULL;
+ ast_value *number = NULL;
+ float fractional;
+ float integral;
+ int builtin_num;
+
+ if (localblock) {
+ parseerror(parser, "cannot declare builtins within functions");
+ break;
+ }
+ if (var->expression.vtype != TYPE_FUNCTION) {
+ parseerror(parser, "unexpected builtin number, '%s' is not a function", var->name);
+ break;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected builtin number");
+ break;
+ }
+
+ if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)) {
+ number = (ast_value*)parse_expression_leave(parser, true, false, false);
+ if (!number) {
+ parseerror(parser, "builtin number expected");
+ break;
+ }
+ if (!ast_istype(number, ast_value) || !number->hasvalue || number->cvq != CV_CONST)
+ {
+ ast_unref(number);
+ parseerror(parser, "builtin number must be a compile time constant");
+ break;
+ }
+ if (number->expression.vtype == TYPE_INTEGER)
+ builtin_num = number->constval.vint;
+ else if (number->expression.vtype == TYPE_FLOAT)
+ builtin_num = number->constval.vfloat;
+ else {
+ ast_unref(number);
+ parseerror(parser, "builtin number must be an integer constant");
+ break;
+ }
+ ast_unref(number);
+
+ fractional = modff(builtin_num, &integral);
+ if (builtin_num < 0 || fractional != 0) {
+ parseerror(parser, "builtin number must be an integer greater than zero");
+ break;
+ }
+
+ /* we only want the integral part anyways */
+ builtin_num = integral;
+ } else if (parser->tok == TOKEN_INTCONST) {
+ builtin_num = parser_token(parser)->constval.i;
+ } else {
+ parseerror(parser, "builtin number must be a compile time constant");
+ break;
+ }
+
+ if (var->hasvalue) {
+ (void)!parsewarning(parser, WARN_DOUBLE_DECLARATION,
+ "builtin `%s` has already been defined\n"
+ " -> previous declaration here: %s:%i",
+ var->name, ast_ctx(var).file, (int)ast_ctx(var).line);
+ }
+ else
+ {
+ func = ast_function_new(ast_ctx(var), var->name, var);
+ if (!func) {
+ parseerror(parser, "failed to allocate function for `%s`", var->name);
+ break;
+ }
+ vec_push(parser->functions, func);
+
+ func->builtin = -builtin_num-1;
+ }
+
+ if (OPTS_FLAG(EXPRESSIONS_FOR_BUILTINS)
+ ? (parser->tok != ',' && parser->tok != ';')
+ : (!parser_next(parser)))
+ {
+ parseerror(parser, "expected comma or semicolon");
+ if (func)
+ ast_function_delete(func);
+ var->constval.vfunc = NULL;
+ break;
+ }
+ }
+ else if (var->expression.vtype == TYPE_ARRAY && parser->tok == '{')
+ {
+ if (localblock) {
+ /* Note that fteqcc and most others don't even *have*
+ * local arrays, so this is not a high priority.
+ */
+ parseerror(parser, "TODO: initializers for local arrays");
+ break;
+ }
+ /*
+static ast_expression* parse_expression_leave(parser_t *parser, bool stopatcomma, bool truthvalue, bool with_labels);
+*/
+ parseerror(parser, "TODO: initializing global arrays is not supported yet!");
+ break;
+ }
+ else if (var->expression.vtype == TYPE_FUNCTION && (parser->tok == '{' || parser->tok == '['))
+ {
+ if (localblock) {
+ parseerror(parser, "cannot declare functions within functions");
+ break;
+ }
+
+ if (proto)
+ ast_ctx(proto) = parser_ctx(parser);
+
+ if (!parse_function_body(parser, var))
+ break;
+ ast_delete(basetype);
+ for (i = 0; i < vec_size(parser->gotos); ++i)
+ parseerror(parser, "undefined label: `%s`", parser->gotos[i]->name);
+ vec_free(parser->gotos);
+ vec_free(parser->labels);
+ return true;
+ } else {
+ ast_expression *cexp;
+ ast_value *cval;
+
+ cexp = parse_expression_leave(parser, true, false, false);
+ if (!cexp)
+ break;
+
+ if (!localblock) {
+ cval = (ast_value*)cexp;
+ if (cval != parser->nil &&
+ (!ast_istype(cval, ast_value) || ((!cval->hasvalue || cval->cvq != CV_CONST) && !cval->isfield))
+ )
+ {
+ parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
+ }
+ else
+ {
+ if (!OPTS_FLAG(INITIALIZED_NONCONSTANTS) &&
+ qualifier != CV_VAR)
+ {
+ var->cvq = CV_CONST;
+ }
+ if (cval == parser->nil)
+ var->expression.flags |= AST_FLAG_INITIALIZED;
+ else
+ {
+ var->hasvalue = true;
+ if (cval->expression.vtype == TYPE_STRING)
+ var->constval.vstring = parser_strdup(cval->constval.vstring);
+ else if (cval->expression.vtype == TYPE_FIELD)
+ var->constval.vfield = cval;
+ else
+ memcpy(&var->constval, &cval->constval, sizeof(var->constval));
+ ast_unref(cval);
+ }
+ }
+ } else {
+ int cvq;
+ shunt sy = { NULL, NULL, NULL, NULL };
+ cvq = var->cvq;
+ var->cvq = CV_NONE;
+ vec_push(sy.out, syexp(ast_ctx(var), (ast_expression*)var));
+ vec_push(sy.out, syexp(ast_ctx(cexp), (ast_expression*)cexp));
+ vec_push(sy.ops, syop(ast_ctx(var), parser->assign_op));
+ if (!parser_sy_apply_operator(parser, &sy))
+ ast_unref(cexp);
+ else {
+ if (vec_size(sy.out) != 1 && vec_size(sy.ops) != 0)
+ parseerror(parser, "internal error: leaked operands");
+ if (!ast_block_add_expr(localblock, (ast_expression*)sy.out[0].out))
+ break;
+ }
+ vec_free(sy.out);
+ vec_free(sy.ops);
+ vec_free(sy.argc);
+ var->cvq = cvq;
+ }
+ }
+
+another:
+ if (parser->tok == ',') {
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected another variable");
+ break;
+ }
+
+ if (parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected another variable");
+ break;
+ }
+ var = ast_value_copy(basetype);
+ cleanvar = true;
+ ast_value_set_name(var, parser_tokval(parser));
+ if (!parser_next(parser)) {
+ parseerror(parser, "error parsing variable declaration");
+ break;
+ }
+ continue;
+ }
+
+ if (parser->tok != ';') {
+ parseerror(parser, "missing semicolon after variables");
+ break;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error after variable declaration");
+ break;
+ }
+
+ ast_delete(basetype);
+ return true;
+ }
+
+ if (cleanvar && var)
+ ast_delete(var);
+ ast_delete(basetype);
+ return false;
+
+cleanup:
+ ast_delete(basetype);
+ if (cleanvar && var)
+ ast_delete(var);
+ if (me[0]) ast_member_delete(me[0]);
+ if (me[1]) ast_member_delete(me[1]);
+ if (me[2]) ast_member_delete(me[2]);
+ return retval;
+}
+
+static bool parser_global_statement(parser_t *parser)
+{
+ int cvq = CV_WRONG;
+ bool noref = false;
+ bool is_static = false;
+ uint32_t qflags = 0;
+ ast_value *istype = NULL;
+ char *vstring = NULL;
+
+ if (parser->tok == TOKEN_IDENT)
+ istype = parser_find_typedef(parser, parser_tokval(parser), 0);
+
+ if (istype || parser->tok == TOKEN_TYPENAME || parser->tok == '.')
+ {
+ return parse_variable(parser, NULL, false, CV_NONE, istype, false, false, 0, NULL);
+ }
+ else if (parse_qualifiers(parser, false, &cvq, &noref, &is_static, &qflags, &vstring))
+ {
+ if (cvq == CV_WRONG)
+ return false;
+ return parse_variable(parser, NULL, true, cvq, NULL, noref, is_static, qflags, vstring);
+ }
+ else if (parser->tok == TOKEN_IDENT && !strcmp(parser_tokval(parser), "enum"))
+ {
+ return parse_enum(parser);
+ }
+ else if (parser->tok == TOKEN_KEYWORD)
+ {
+ if (!strcmp(parser_tokval(parser), "typedef")) {
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected type definition after 'typedef'");
+ return false;
+ }
+ return parse_typedef(parser);
+ }
+ parseerror(parser, "unrecognized keyword `%s`", parser_tokval(parser));
+ return false;
+ }
+ else if (parser->tok == '#')
+ {
+ return parse_pragma(parser);
+ }
+ else if (parser->tok == '$')
+ {
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error");
+ return false;
+ }
+ }
+ else
+ {
+ parseerror(parser, "unexpected token: `%s`", parser->lex->tok.value);
+ return false;
+ }
+ return true;
+}
+
+static uint16_t progdefs_crc_sum(uint16_t old, const char *str)
+{
+ return util_crc16(old, str, strlen(str));
+}
+
+static void progdefs_crc_file(const char *str)
+{
+ /* write to progdefs.h here */
+ (void)str;
+}
+
+static uint16_t progdefs_crc_both(uint16_t old, const char *str)
+{
+ old = progdefs_crc_sum(old, str);
+ progdefs_crc_file(str);
+ return old;
+}
+
+static void generate_checksum(parser_t *parser)
+{
+ uint16_t crc = 0xFFFF;
+ size_t i;
+ ast_value *value;
+
+ crc = progdefs_crc_both(crc, "\n/* file generated by qcc, do not modify */\n\ntypedef struct\n{");
+ crc = progdefs_crc_sum(crc, "\tint\tpad[28];\n");
+ /*
+ progdefs_crc_file("\tint\tpad;\n");
+ progdefs_crc_file("\tint\tofs_return[3];\n");
+ progdefs_crc_file("\tint\tofs_parm0[3];\n");
+ progdefs_crc_file("\tint\tofs_parm1[3];\n");
+ progdefs_crc_file("\tint\tofs_parm2[3];\n");
+ progdefs_crc_file("\tint\tofs_parm3[3];\n");
+ progdefs_crc_file("\tint\tofs_parm4[3];\n");
+ progdefs_crc_file("\tint\tofs_parm5[3];\n");
+ progdefs_crc_file("\tint\tofs_parm6[3];\n");
+ progdefs_crc_file("\tint\tofs_parm7[3];\n");
+ */
+ for (i = 0; i < parser->crc_globals; ++i) {
+ if (!ast_istype(parser->globals[i], ast_value))
+ continue;
+ value = (ast_value*)(parser->globals[i]);
+ switch (value->expression.vtype) {
+ case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
+ case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
+ case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
+ case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
+ default:
+ crc = progdefs_crc_both(crc, "\tint\t");
+ break;
+ }
+ crc = progdefs_crc_both(crc, value->name);
+ crc = progdefs_crc_both(crc, ";\n");
+ }
+ crc = progdefs_crc_both(crc, "} globalvars_t;\n\ntypedef struct\n{\n");
+ for (i = 0; i < parser->crc_fields; ++i) {
+ if (!ast_istype(parser->fields[i], ast_value))
+ continue;
+ value = (ast_value*)(parser->fields[i]);
+ switch (value->expression.next->vtype) {
+ case TYPE_FLOAT: crc = progdefs_crc_both(crc, "\tfloat\t"); break;
+ case TYPE_VECTOR: crc = progdefs_crc_both(crc, "\tvec3_t\t"); break;
+ case TYPE_STRING: crc = progdefs_crc_both(crc, "\tstring_t\t"); break;
+ case TYPE_FUNCTION: crc = progdefs_crc_both(crc, "\tfunc_t\t"); break;
+ default:
+ crc = progdefs_crc_both(crc, "\tint\t");
+ break;
+ }
+ crc = progdefs_crc_both(crc, value->name);
+ crc = progdefs_crc_both(crc, ";\n");
+ }
+ crc = progdefs_crc_both(crc, "} entvars_t;\n\n");
+
+ parser->code->crc = crc;
+}
+
+parser_t *parser_create()
+{
+ parser_t *parser;
+ lex_ctx empty_ctx;
+ size_t i;
+
+ parser = (parser_t*)mem_a(sizeof(parser_t));
+ if (!parser)
+ return NULL;
+
+ memset(parser, 0, sizeof(*parser));
+
+ if (!(parser->code = code_init())) {
+ mem_d(parser);
+ return NULL;
+ }
+
+ for (i = 0; i < operator_count; ++i) {
+ if (operators[i].id == opid1('=')) {
+ parser->assign_op = operators+i;
+ break;
+ }
+ }
+ if (!parser->assign_op) {
+ printf("internal error: initializing parser: failed to find assign operator\n");
+ mem_d(parser);
+ return NULL;
+ }
+
+ vec_push(parser->variables, parser->htfields = util_htnew(PARSER_HT_SIZE));
+ vec_push(parser->variables, parser->htglobals = util_htnew(PARSER_HT_SIZE));
+ vec_push(parser->typedefs, util_htnew(TYPEDEF_HT_SIZE));
+ vec_push(parser->_blocktypedefs, 0);
+
+ parser->aliases = util_htnew(PARSER_HT_SIZE);
+
+ parser->ht_imm_string = util_htnew(512);
+
+ /* corrector */
+ vec_push(parser->correct_variables, correct_trie_new());
+ vec_push(parser->correct_variables_score, NULL);
+
+ empty_ctx.file = "<internal>";
+ empty_ctx.line = 0;
+ parser->nil = ast_value_new(empty_ctx, "nil", TYPE_NIL);
+ parser->nil->cvq = CV_CONST;
+ if (OPTS_FLAG(UNTYPED_NIL))
+ util_htset(parser->htglobals, "nil", (void*)parser->nil);
+
+ parser->max_param_count = 1;
+
+ parser->const_vec[0] = ast_value_new(empty_ctx, "<vector.x>", TYPE_NOEXPR);
+ parser->const_vec[1] = ast_value_new(empty_ctx, "<vector.y>", TYPE_NOEXPR);
+ parser->const_vec[2] = ast_value_new(empty_ctx, "<vector.z>", TYPE_NOEXPR);
+
+ if (OPTS_OPTION_BOOL(OPTION_ADD_INFO)) {
+ parser->reserved_version = ast_value_new(empty_ctx, "reserved:version", TYPE_STRING);
+ parser->reserved_version->cvq = CV_CONST;
+ parser->reserved_version->hasvalue = true;
+ parser->reserved_version->expression.flags |= AST_FLAG_INCLUDE_DEF;
+ parser->reserved_version->constval.vstring = util_strdup(GMQCC_FULL_VERSION_STRING);
+ } else {
+ parser->reserved_version = NULL;
+ }
+
+ return parser;
+}
+
+static bool parser_compile(parser_t *parser)
+{
+ /* initial lexer/parser state */
+ parser->lex->flags.noops = true;
+
+ if (parser_next(parser))
+ {
+ while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
+ {
+ if (!parser_global_statement(parser)) {
+ if (parser->tok == TOKEN_EOF)
+ parseerror(parser, "unexpected eof");
+ else if (compile_errors)
+ parseerror(parser, "there have been errors, bailing out");
+ lex_close(parser->lex);
+ parser->lex = NULL;
+ return false;
+ }
+ }
+ } else {
+ parseerror(parser, "parse error");
+ lex_close(parser->lex);
+ parser->lex = NULL;
+ return false;
+ }
+
+ lex_close(parser->lex);
+ parser->lex = NULL;
+
+ return !compile_errors;
+}
+
+bool parser_compile_file(parser_t *parser, const char *filename)
+{
+ parser->lex = lex_open(filename);
+ if (!parser->lex) {
+ con_err("failed to open file \"%s\"\n", filename);
+ return false;
+ }
+ return parser_compile(parser);
+}
+
+bool parser_compile_string(parser_t *parser, const char *name, const char *str, size_t len)
+{
+ parser->lex = lex_open_string(str, len, name);
+ if (!parser->lex) {
+ con_err("failed to create lexer for string \"%s\"\n", name);
+ return false;
+ }
+ return parser_compile(parser);
+}
+
+static void parser_remove_ast(parser_t *parser)
+{
+ size_t i;
+ if (parser->ast_cleaned)
+ return;
+ parser->ast_cleaned = true;
+ for (i = 0; i < vec_size(parser->accessors); ++i) {
+ ast_delete(parser->accessors[i]->constval.vfunc);
+ parser->accessors[i]->constval.vfunc = NULL;
+ ast_delete(parser->accessors[i]);
+ }
+ for (i = 0; i < vec_size(parser->functions); ++i) {
+ ast_delete(parser->functions[i]);
+ }
+ for (i = 0; i < vec_size(parser->imm_vector); ++i) {
+ ast_delete(parser->imm_vector[i]);
+ }
+ for (i = 0; i < vec_size(parser->imm_string); ++i) {
+ ast_delete(parser->imm_string[i]);
+ }
+ for (i = 0; i < vec_size(parser->imm_float); ++i) {
+ ast_delete(parser->imm_float[i]);
+ }
+ for (i = 0; i < vec_size(parser->fields); ++i) {
+ ast_delete(parser->fields[i]);
+ }
+ for (i = 0; i < vec_size(parser->globals); ++i) {
+ ast_delete(parser->globals[i]);
+ }
+ vec_free(parser->accessors);
+ vec_free(parser->functions);
+ vec_free(parser->imm_vector);
+ vec_free(parser->imm_string);
+ util_htdel(parser->ht_imm_string);
+ vec_free(parser->imm_float);
+ vec_free(parser->globals);
+ vec_free(parser->fields);
+
+ for (i = 0; i < vec_size(parser->variables); ++i)
+ util_htdel(parser->variables[i]);
+ vec_free(parser->variables);
+ vec_free(parser->_blocklocals);
+ vec_free(parser->_locals);
+
+ /* corrector */
+ for (i = 0; i < vec_size(parser->correct_variables); ++i) {
+ correct_del(parser->correct_variables[i], parser->correct_variables_score[i]);
+ }
+ vec_free(parser->correct_variables);
+ vec_free(parser->correct_variables_score);
+
+
+ for (i = 0; i < vec_size(parser->_typedefs); ++i)
+ ast_delete(parser->_typedefs[i]);
+ vec_free(parser->_typedefs);
+ for (i = 0; i < vec_size(parser->typedefs); ++i)
+ util_htdel(parser->typedefs[i]);
+ vec_free(parser->typedefs);
+ vec_free(parser->_blocktypedefs);
+
+ vec_free(parser->_block_ctx);
+
+ vec_free(parser->labels);
+ vec_free(parser->gotos);
+ vec_free(parser->breaks);
+ vec_free(parser->continues);
+
+ ast_value_delete(parser->nil);
+
+ ast_value_delete(parser->const_vec[0]);
+ ast_value_delete(parser->const_vec[1]);
+ ast_value_delete(parser->const_vec[2]);
+
+ util_htdel(parser->aliases);
+ intrin_intrinsics_destroy(parser);
+}
+
+void parser_cleanup(parser_t *parser)
+{
+ parser_remove_ast(parser);
+ code_cleanup(parser->code);
+
+ mem_d(parser);
+}
+
+bool parser_finish(parser_t *parser, const char *output)
+{
+ size_t i;
+ ir_builder *ir;
+ bool retval = true;
+
+ if (compile_errors) {
+ con_out("*** there were compile errors\n");
+ return false;
+ }
+
+ ir = ir_builder_new("gmqcc_out");
+ if (!ir) {
+ con_out("failed to allocate builder\n");
+ return false;
+ }
+
+ for (i = 0; i < vec_size(parser->fields); ++i) {
+ ast_value *field;
+ bool hasvalue;
+ if (!ast_istype(parser->fields[i], ast_value))
+ continue;
+ field = (ast_value*)parser->fields[i];
+ hasvalue = field->hasvalue;
+ field->hasvalue = false;
+ if (!ast_global_codegen((ast_value*)field, ir, true)) {
+ con_out("failed to generate field %s\n", field->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ if (hasvalue) {
+ ir_value *ifld;
+ ast_expression *subtype;
+ field->hasvalue = true;
+ subtype = field->expression.next;
+ ifld = ir_builder_create_field(ir, field->name, subtype->vtype);
+ if (subtype->vtype == TYPE_FIELD)
+ ifld->fieldtype = subtype->next->vtype;
+ else if (subtype->vtype == TYPE_FUNCTION)
+ ifld->outtype = subtype->next->vtype;
+ (void)!ir_value_set_field(field->ir_v, ifld);
+ }
+ }
+ for (i = 0; i < vec_size(parser->globals); ++i) {
+ ast_value *asvalue;
+ if (!ast_istype(parser->globals[i], ast_value))
+ continue;
+ asvalue = (ast_value*)(parser->globals[i]);
+ if (!asvalue->uses && !asvalue->hasvalue && asvalue->expression.vtype != TYPE_FUNCTION) {
+ retval = retval && !compile_warning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
+ "unused global: `%s`", asvalue->name);
+ }
+ if (!ast_global_codegen(asvalue, ir, false)) {
+ con_out("failed to generate global %s\n", asvalue->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ /* Build function vararg accessor ast tree now before generating
+ * immediates, because the accessors may add new immediates
+ */
+ for (i = 0; i < vec_size(parser->functions); ++i) {
+ ast_function *f = parser->functions[i];
+ if (f->varargs) {
+ if (parser->max_param_count > vec_size(f->vtype->expression.params)) {
+ f->varargs->expression.count = parser->max_param_count - vec_size(f->vtype->expression.params);
+ if (!parser_create_array_setter_impl(parser, f->varargs)) {
+ con_out("failed to generate vararg setter for %s\n", f->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ if (!parser_create_array_getter_impl(parser, f->varargs)) {
+ con_out("failed to generate vararg getter for %s\n", f->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ } else {
+ ast_delete(f->varargs);
+ f->varargs = NULL;
+ }
+ }
+ }
+ /* Now we can generate immediates */
+ for (i = 0; i < vec_size(parser->imm_float); ++i) {
+ if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
+ con_out("failed to generate global %s\n", parser->imm_float[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < vec_size(parser->imm_string); ++i) {
+ if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
+ con_out("failed to generate global %s\n", parser->imm_string[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < vec_size(parser->imm_vector); ++i) {
+ if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
+ con_out("failed to generate global %s\n", parser->imm_vector[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < vec_size(parser->globals); ++i) {
+ ast_value *asvalue;
+ if (!ast_istype(parser->globals[i], ast_value))
+ continue;
+ asvalue = (ast_value*)(parser->globals[i]);
+ if (!(asvalue->expression.flags & AST_FLAG_INITIALIZED))
+ {
+ if (asvalue->cvq == CV_CONST && !asvalue->hasvalue)
+ (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_CONSTANT,
+ "uninitialized constant: `%s`",
+ asvalue->name);
+ else if ((asvalue->cvq == CV_NONE || asvalue->cvq == CV_CONST) && !asvalue->hasvalue)
+ (void)!compile_warning(ast_ctx(asvalue), WARN_UNINITIALIZED_GLOBAL,
+ "uninitialized global: `%s`",
+ asvalue->name);
+ }
+ if (!ast_generate_accessors(asvalue, ir)) {
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < vec_size(parser->fields); ++i) {
+ ast_value *asvalue;
+ asvalue = (ast_value*)(parser->fields[i]->next);
+
+ if (!ast_istype((ast_expression*)asvalue, ast_value))
+ continue;
+ if (asvalue->expression.vtype != TYPE_ARRAY)
+ continue;
+ if (!ast_generate_accessors(asvalue, ir)) {
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ if (parser->reserved_version &&
+ !ast_global_codegen(parser->reserved_version, ir, false))
+ {
+ con_out("failed to generate reserved::version");
+ ir_builder_delete(ir);
+ return false;
+ }
+ for (i = 0; i < vec_size(parser->functions); ++i) {
+ ast_function *f = parser->functions[i];
+ if (!ast_function_codegen(f, ir)) {
+ con_out("failed to generate function %s\n", f->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+
+ generate_checksum(parser);
+ if (OPTS_OPTION_BOOL(OPTION_DUMP))
+ ir_builder_dump(ir, con_out);
+ for (i = 0; i < vec_size(parser->functions); ++i) {
+ if (!ir_function_finalize(parser->functions[i]->ir_func)) {
+ con_out("failed to finalize function %s\n", parser->functions[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ parser_remove_ast(parser);
+
+ if (compile_Werrors) {
+ con_out("*** there were warnings treated as errors\n");
+ compile_show_werrors();
+ retval = false;
+ }
+
+ if (retval) {
+ if (OPTS_OPTION_BOOL(OPTION_DUMPFIN))
+ ir_builder_dump(ir, con_out);
+
+ if (!ir_builder_generate(parser->code, ir, output)) {
+ con_out("*** failed to generate output file\n");
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ ir_builder_delete(ir);
+ return retval;
+}
projects / voretournament / voretournament.git / blobdiff