#include "gmqcc.h"
#include "lexer.h"
+typedef struct {
+ char *name;
+ ast_expression *var;
+} varentry_t;
+
typedef struct {
lex_file *lex;
int tok;
- MEM_VECTOR_MAKE(ast_value*, globals);
+ MEM_VECTOR_MAKE(varentry_t, globals);
+ MEM_VECTOR_MAKE(varentry_t, fields);
MEM_VECTOR_MAKE(ast_function*, functions);
MEM_VECTOR_MAKE(ast_value*, imm_float);
+ MEM_VECTOR_MAKE(ast_value*, imm_string);
+ MEM_VECTOR_MAKE(ast_value*, imm_vector);
ast_function *function;
- MEM_VECTOR_MAKE(ast_value*, locals);
+ MEM_VECTOR_MAKE(varentry_t, locals);
size_t blocklocal;
+
+ size_t errors;
+
+ /* TYPE_FIELD -> parser_find_fields is used instead of find_var
+ * TODO: TYPE_VECTOR -> x, y and z are accepted in the gmqcc standard
+ * anything else: type error
+ */
+ qcint memberof;
} parser_t;
-MEM_VEC_FUNCTIONS(parser_t, ast_value*, globals)
+MEM_VEC_FUNCTIONS(parser_t, varentry_t, globals)
+MEM_VEC_FUNCTIONS(parser_t, varentry_t, fields)
MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_float)
-MEM_VEC_FUNCTIONS(parser_t, ast_value*, locals)
+MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_string)
+MEM_VEC_FUNCTIONS(parser_t, ast_value*, imm_vector)
+MEM_VEC_FUNCTIONS(parser_t, varentry_t, locals)
MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
+static void parser_pop_local(parser_t *parser);
+static bool parser_variable(parser_t *parser, ast_block *localblock);
+static ast_block* parser_parse_block(parser_t *parser);
+static ast_expression* parser_parse_statement_or_block(parser_t *parser);
+static ast_expression* parser_expression_leave(parser_t *parser);
+static ast_expression* parser_expression(parser_t *parser);
+
void parseerror(parser_t *parser, const char *fmt, ...)
{
va_list ap;
- if (parser)
- printf("error %s:%lu: ", parser->lex->tok->ctx.file, (unsigned long)parser->lex->tok->ctx.line);
- else
- printf("error: ");
+ parser->errors++;
va_start(ap, fmt);
- vprintf(fmt, ap);
+ vprintmsg(LVL_ERROR, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "parse error", fmt, ap);
va_end(ap);
printf("\n");
}
+/* returns true if it counts as an error */
+bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
+{
+ va_list ap;
+ int lvl = LVL_WARNING;
+
+ if (!OPTS_WARN(warntype))
+ return false;
+
+ if (OPTS_WARN(WARN_ERROR)) {
+ parser->errors++;
+ lvl = LVL_ERROR;
+ }
+
+ va_start(ap, fmt);
+ vprintmsg(lvl, parser->lex->tok->ctx.file, parser->lex->tok->ctx.line, "warning", fmt, ap);
+ va_end(ap);
+
+ return OPTS_WARN(WARN_ERROR);
+}
+
bool parser_next(parser_t *parser)
{
/* lex_do kills the previous token */
return out;
}
-ast_value* parser_find_global(parser_t *parser, const char *name)
+ast_value* parser_const_string(parser_t *parser, const char *str)
+{
+ size_t i;
+ ast_value *out;
+ for (i = 0; i < parser->imm_string_count; ++i) {
+ if (!strcmp(parser->imm_string[i]->constval.vstring, str))
+ return parser->imm_string[i];
+ }
+ out = ast_value_new(parser_ctx(parser), "#IMMEDIATE", TYPE_STRING);
+ out->isconst = true;
+ out->constval.vstring = util_strdup(str);
+ if (!parser_t_imm_string_add(parser, out)) {
+ ast_value_delete(out);
+ return NULL;
+ }
+ return out;
+}
+
+ast_value* parser_const_vector(parser_t *parser, vector v)
+{
+ size_t i;
+ ast_value *out;
+ for (i = 0; i < parser->imm_vector_count; ++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->isconst = true;
+ out->constval.vvec = v;
+ if (!parser_t_imm_vector_add(parser, out)) {
+ ast_value_delete(out);
+ return NULL;
+ }
+ return out;
+}
+
+ast_expression* parser_find_field(parser_t *parser, const char *name)
+{
+ size_t i;
+ for (i = 0; i < parser->fields_count; ++i) {
+ if (!strcmp(parser->fields[i].name, name))
+ return parser->fields[i].var;
+ }
+ return NULL;
+}
+
+ast_expression* parser_find_global(parser_t *parser, const char *name)
{
size_t i;
for (i = 0; i < parser->globals_count; ++i) {
- if (!strcmp(parser->globals[i]->name, name))
- return parser->globals[i];
+ if (!strcmp(parser->globals[i].name, name))
+ return parser->globals[i].var;
}
return NULL;
}
-ast_value* parser_find_local(parser_t *parser, const char *name, size_t upto)
+ast_expression* parser_find_local(parser_t *parser, const char *name, size_t upto)
{
size_t i;
+ ast_value *fun;
for (i = parser->locals_count; i > upto;) {
--i;
- if (!strcmp(parser->locals[i]->name, name))
- return parser->locals[i];
+ if (!strcmp(parser->locals[i].name, name))
+ return parser->locals[i].var;
+ }
+ fun = parser->function->vtype;
+ for (i = 0; i < fun->expression.params_count; ++i) {
+ if (!strcmp(fun->expression.params[i]->name, name))
+ return (ast_expression*)(fun->expression.params[i]);
}
return NULL;
}
-ast_value* parser_find_var(parser_t *parser, const char *name)
+ast_expression* parser_find_var(parser_t *parser, const char *name)
{
- ast_value *v;
+ ast_expression *v;
v = parser_find_local(parser, name, 0);
if (!v) v = parser_find_global(parser, name);
return v;
lex_ctx ctx = parser_ctx(parser);
int vtype = basetype;
int temptype;
+ size_t i;
MEM_VECTOR_INIT(¶ms, p);
ast_value *param;
bool dummy;
- if (!parser_next(parser)) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
- }
+ if (!parser_next(parser))
+ goto on_error;
if (parser->tok == ')')
break;
temptype = parser_token(parser)->constval.t;
- if (!parser_next(parser)) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
- }
+ if (!parser_next(parser))
+ goto on_error;
+
param = parser_parse_type(parser, temptype, &dummy);
(void)dummy;
- if (!param) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
+ if (!param)
+ goto on_error;
+
+ if (parser->tok == TOKEN_IDENT) {
+ /* named parameter */
+ if (!ast_value_set_name(param, parser_tokval(parser)))
+ goto on_error;
+ if (!parser_next(parser))
+ goto on_error;
}
if (!paramlist_t_p_add(¶ms, param)) {
- MEM_VECTOR_CLEAR(¶ms, p);
parseerror(parser, "Out of memory while parsing typename");
- return NULL;
+ goto on_error;
}
if (parser->tok == ',')
continue;
if (parser->tok == ')')
break;
- MEM_VECTOR_CLEAR(¶ms, p);
parseerror(parser, "Unexpected token");
- return NULL;
- }
- if (!parser_next(parser)) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
+ goto on_error;
}
+ if (!parser_next(parser))
+ goto on_error;
}
var = ast_value_new(ctx, "<unnamed>", vtype);
- if (!var) {
- MEM_VECTOR_CLEAR(¶ms, p);
- return NULL;
- }
- MEM_VECTOR_MOVE(¶ms, p, var, params);
+ if (!var)
+ goto on_error;
+ MEM_VECTOR_MOVE(¶ms, p, &var->expression, params);
return var;
+on_error:
+ for (i = 0; i < params.p_count; ++i)
+ ast_value_delete(params.p[i]);
+ MEM_VECTOR_CLEAR(¶ms, p);
+ return NULL;
}
typedef struct
{
size_t etype; /* 0 = expression, others are operators */
+ int paren;
+ size_t off;
ast_expression *out;
- ast_value *value; /* need to know if we can assign */
+ ast_block *block; /* for commas and function calls */
lex_ctx ctx;
} sy_elem;
typedef struct
sy_elem e;
e.etype = 0;
e.out = v;
- e.value = NULL;
+ e.block = NULL;
e.ctx = ctx;
+ e.paren = 0;
return e;
}
-static sy_elem syval(lex_ctx ctx, ast_value *v) {
+
+static sy_elem syblock(lex_ctx ctx, ast_block *v) {
sy_elem e;
e.etype = 0;
e.out = (ast_expression*)v;
- e.value = v;
+ e.block = v;
e.ctx = ctx;
+ e.paren = 0;
return e;
}
sy_elem e;
e.etype = 1 + (op - operators);
e.out = NULL;
- e.value = NULL;
+ e.block = NULL;
+ e.ctx = ctx;
+ e.paren = 0;
+ return e;
+}
+
+static sy_elem syparen(lex_ctx ctx, int p, size_t off) {
+ sy_elem e;
+ e.etype = 0;
+ e.off = off;
+ e.out = NULL;
+ e.block = NULL;
e.ctx = ctx;
+ e.paren = p;
return e;
}
+#ifdef DEBUGSHUNT
+# define DEBUGSHUNTDO(x) x
+#else
+# define DEBUGSHUNTDO(x)
+#endif
+
static bool parser_sy_pop(parser_t *parser, shunt *sy)
{
const oper_info *op;
lex_ctx ctx;
ast_expression *out = NULL;
ast_expression *exprs[3];
- ast_value *vars[3];
- size_t i;
+ ast_block *blocks[3];
+ size_t i, assignop;
+ qcint generated_op = 0;
if (!sy->ops_count) {
parseerror(parser, "internal error: missing operator");
return false;
}
+ if (sy->ops[sy->ops_count-1].paren) {
+ parseerror(parser, "unmatched parenthesis");
+ return false;
+ }
+
op = &operators[sy->ops[sy->ops_count-1].etype - 1];
ctx = sy->ops[sy->ops_count-1].ctx;
+ DEBUGSHUNTDO(printf("apply %s\n", op->op));
+
if (sy->out_count < op->operands) {
parseerror(parser, "internal error: not enough operands: %i", sy->out_count);
return false;
sy->out_count -= op->operands;
for (i = 0; i < op->operands; ++i) {
- exprs[i] = sy->out[sy->out_count+i].out;
- vars[i] = sy->out[sy->out_count+i].value;
+ exprs[i] = sy->out[sy->out_count+i].out;
+ blocks[i] = sy->out[sy->out_count+i].block;
+ }
+
+ if (blocks[0] && !blocks[0]->exprs_count && op->id != opid1(',')) {
+ parseerror(parser, "internal error: operator cannot be applied on empty blocks");
+ return false;
}
- printf("Applying operator %s\n", op->op);
+#define NotSameType(T) \
+ (exprs[0]->expression.vtype != exprs[1]->expression.vtype || \
+ exprs[0]->expression.vtype != T)
switch (op->id)
{
default:
parseerror(parser, "internal error: unhandled operand");
return false;
+ case opid1('.'):
+ if (exprs[0]->expression.vtype == TYPE_ENTITY) {
+ if (exprs[1]->expression.vtype != TYPE_FIELD) {
+ parseerror(parser, "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]->expression.vtype == TYPE_VECTOR) {
+ parseerror(parser, "internal error: vector access is not supposed to be handled at this point");
+ return false;
+ }
+ else {
+ parseerror(parser, "type error: member-of operator on something that is not an entity or vector");
+ return false;
+ }
+ break;
+
+ case opid1(','):
+ if (blocks[0]) {
+ if (!ast_block_exprs_add(blocks[0], exprs[1]))
+ return false;
+ } else {
+ blocks[0] = ast_block_new(ctx);
+ if (!ast_block_exprs_add(blocks[0], exprs[0]) ||
+ !ast_block_exprs_add(blocks[0], exprs[1]))
+ {
+ return false;
+ }
+ }
+ if (!ast_block_set_type(blocks[0], exprs[1]))
+ return false;
+
+ sy->out[sy->out_count++] = syblock(ctx, blocks[0]);
+ return true;
+
case opid1('+'):
if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
parseerror(parser, "Cannot add type %s and %s",
type_name[exprs[1]->expression.vtype]);
return false;
}
+ if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
+ parseerror(parser, "type error: %s - %s not defined",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "Cannot add type %s and %s",
+ parseerror(parser, "type error: cannot add type %s to %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
break;
case opid1('-'):
if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
- parseerror(parser, "Cannot subtract type %s from %s",
+ parseerror(parser, "type error: cannot subtract type %s from %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
}
+ if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
+ parseerror(parser, "type error: %s - %s not defined",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
switch (exprs[0]->expression.vtype) {
case TYPE_FLOAT:
out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_F, exprs[0], exprs[1]);
out = (ast_expression*)ast_binary_new(ctx, INSTR_SUB_V, exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "Cannot add type %s from %s",
+ parseerror(parser, "type error: cannot subtract type %s from %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
exprs[1]->expression.vtype != TYPE_VECTOR &&
exprs[1]->expression.vtype != TYPE_FLOAT)
{
- parseerror(parser, "Cannot multiply type %s from %s",
+ parseerror(parser, "type error: cannot multiply type %s by %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
out = (ast_expression*)ast_binary_new(ctx, INSTR_MUL_V, exprs[0], exprs[1]);
break;
default:
- parseerror(parser, "Cannot add type %s from %s",
+ parseerror(parser, "type error: cannot multiplye type %s by %s",
type_name[exprs[1]->expression.vtype],
type_name[exprs[0]->expression.vtype]);
return false;
};
break;
case opid1('/'):
- if (exprs[0]->expression.vtype != exprs[1]->expression.vtype ||
- exprs[0]->expression.vtype != TYPE_FLOAT)
- {
- parseerror(parser, "Cannot divide types %s and %s",
+ if (NotSameType(TYPE_FLOAT)) {
+ parseerror(parser, "type error: cannot divide types %s and %s",
type_name[exprs[0]->expression.vtype],
type_name[exprs[1]->expression.vtype]);
return false;
}
out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
break;
+ case opid1('%'):
+ case opid2('%','='):
+ parseerror(parser, "qc does not have a modulo operator");
+ return false;
+ case opid1('|'):
+ case opid1('&'):
+ if (NotSameType(TYPE_FLOAT)) {
+ parseerror(parser, "type error: cannot perform bit operations on types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx,
+ (op->id == opid1('|') ? INSTR_BITOR : INSTR_BITAND),
+ exprs[0], exprs[1]);
+ break;
+ case opid1('^'):
+ parseerror(parser, "TODO: bitxor");
+ return false;
+
+ case opid2('<','<'):
+ case opid2('>','>'):
+ case opid3('<','<','='):
+ case opid3('>','>','='):
+ parseerror(parser, "TODO: shifts");
+ return false;
+
+ case opid2('|','|'):
+ generated_op += 1; /* INSTR_OR */
+ case opid2('&','&'):
+ generated_op += INSTR_AND;
+ if (NotSameType(TYPE_FLOAT)) {
+ parseerror(parser, "type error: cannot apply logical operation on types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ parseerror(parser, "TODO: logical ops for arbitrary types using INSTR_NOT");
+ parseerror(parser, "TODO: optional early out");
+ return false;
+ }
+ if (opts_standard == COMPILER_GMQCC)
+ printf("TODO: early out logic\n");
+ out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
+ 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)) {
+ parseerror(parser, "type error: cannot compare types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, generated_op, exprs[0], exprs[1]);
+ break;
+ case opid2('!', '='):
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
+ parseerror(parser, "type error: cannot compare types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, type_ne_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
+ break;
+ case opid2('=', '='):
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
+ parseerror(parser, "type error: cannot compare types %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ out = (ast_expression*)ast_binary_new(ctx, type_eq_instr[exprs[0]->expression.vtype], exprs[0], exprs[1]);
+ break;
case opid1('='):
- if (!vars[0]) {
- parseerror(parser, "Cannot assign to non-variable");
+ if (ast_istype(exprs[0], ast_entfield))
+ assignop = type_storep_instr[exprs[0]->expression.vtype];
+ else
+ assignop = type_store_instr[exprs[0]->expression.vtype];
+ out = (ast_expression*)ast_store_new(ctx, assignop, exprs[0], exprs[1]);
+ break;
+ case opid2('+','='):
+ if (exprs[0]->expression.vtype != exprs[1]->expression.vtype) {
+ parseerror(parser, "Cannot add type %s and %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ }
+ if (exprs[0]->expression.vtype != TYPE_VECTOR && exprs[0]->expression.vtype != TYPE_FLOAT) {
+ parseerror(parser, "type error: %s - %s not defined",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
return false;
}
- out = (ast_expression*)ast_store_new(ctx,
- type_store_instr[vars[0]->expression.vtype],
- vars[0], exprs[1]);
+ switch (exprs[0]->expression.vtype) {
+ case TYPE_FLOAT:
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_F, exprs[0], exprs[1]);
+ break;
+ case TYPE_VECTOR:
+ out = (ast_expression*)ast_binary_new(ctx, INSTR_ADD_V, exprs[0], exprs[1]);
+ break;
+ default:
+ parseerror(parser, "type error: cannot add type %s to %s",
+ type_name[exprs[0]->expression.vtype],
+ type_name[exprs[1]->expression.vtype]);
+ return false;
+ };
break;
}
+#undef NotSameType
if (!out) {
parseerror(parser, "failed to apply operand %s", op->op);
return false;
}
+ DEBUGSHUNTDO(printf("applied %s\n", op->op));
sy->out[sy->out_count++] = syexp(ctx, out);
return true;
}
-static ast_expression* parser_expression(parser_t *parser)
+static bool parser_close_call(parser_t *parser, shunt *sy)
+{
+ /* was a function call */
+ ast_expression *fun;
+ ast_call *call;
+
+ size_t fid;
+ size_t paramcount;
+
+ sy->ops_count--;
+ fid = sy->ops[sy->ops_count].off;
+
+ /* out[fid] is the function
+ * everything above is parameters...
+ * 0 params = nothing
+ * 1 params = ast_expression
+ * more = ast_block
+ */
+
+ if (sy->out_count < 1 || sy->out_count <= fid) {
+ parseerror(parser, "internal error: function call needs function and parameter list...");
+ return false;
+ }
+
+ fun = sy->out[fid].out;
+
+ call = ast_call_new(sy->ops[sy->ops_count].ctx, fun);
+ if (!call) {
+ parseerror(parser, "out of memory");
+ return false;
+ }
+
+ if (fid+1 == sy->out_count) {
+ /* no arguments */
+ paramcount = 0;
+ } else if (fid+2 == sy->out_count) {
+ ast_block *params;
+ sy->out_count--;
+ params = sy->out[sy->out_count].block;
+ if (!params) {
+ /* 1 param */
+ paramcount = 1;
+ if (!ast_call_params_add(call, sy->out[sy->out_count].out)) {
+ ast_delete(sy->out[sy->out_count].out);
+ parseerror(parser, "out of memory");
+ return false;
+ }
+ } else {
+ paramcount = params->exprs_count;
+ MEM_VECTOR_MOVE(params, exprs, call, params);
+ ast_delete(params);
+ }
+ } else {
+ parseerror(parser, "invalid function call");
+ return false;
+ }
+
+ /* overwrite fid, the function, with a call */
+ sy->out[fid] = syexp(call->expression.node.context, (ast_expression*)call);
+
+ if (fun->expression.vtype != TYPE_FUNCTION) {
+ parseerror(parser, "not a function");
+ return false;
+ }
+
+ if (!fun->expression.next) {
+ parseerror(parser, "could not determine function return type");
+ return false;
+ } else {
+ if (fun->expression.params_count != paramcount) {
+ parseerror(parser, "expected %i parameters, got %i", (int)fun->expression.params_count, paramcount);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool parser_close_paren(parser_t *parser, shunt *sy, bool functions_only)
+{
+ if (!sy->ops_count) {
+ parseerror(parser, "unmatched closing paren");
+ return false;
+ }
+ if (sy->ops[sy->ops_count-1].paren == 1) {
+ parseerror(parser, "empty parenthesis expression");
+ return false;
+ }
+ while (sy->ops_count) {
+ if (sy->ops[sy->ops_count-1].paren == 'f') {
+ if (!parser_close_call(parser, sy))
+ return false;
+ break;
+ }
+ if (sy->ops[sy->ops_count-1].paren == 1) {
+ sy->ops_count--;
+ return !functions_only;
+ }
+ if (!parser_sy_pop(parser, sy))
+ return false;
+ }
+ return true;
+}
+
+static ast_expression* parser_expression_leave(parser_t *parser)
{
ast_expression *expr = NULL;
shunt sy;
bool wantop = false;
+ bool gotmemberof = false;
+
+ /* count the parens because an if starts with one, so the
+ * end of a condition is an unmatched closing paren
+ */
+ int parens = 0;
MEM_VECTOR_INIT(&sy, out);
MEM_VECTOR_INIT(&sy, ops);
while (true)
{
+ if (gotmemberof)
+ gotmemberof = false;
+ else
+ parser->memberof = 0;
if (!wantop)
{
+ bool nextwant = true;
if (parser->tok == TOKEN_IDENT)
{
/* variable */
- ast_value *var = parser_find_var(parser, parser_tokval(parser));
+ ast_expression *var;
+ if (opts_standard == COMPILER_GMQCC)
+ {
+ if (parser->memberof == TYPE_ENTITY)
+ var = parser_find_field(parser, parser_tokval(parser));
+ else if (parser->memberof == TYPE_VECTOR)
+ {
+ parseerror(parser, "TODO: implement effective vector member access");
+ goto onerr;
+ }
+ else if (parser->memberof) {
+ parseerror(parser, "namespace for member not found");
+ goto onerr;
+ }
+ else
+ var = parser_find_var(parser, parser_tokval(parser));
+ } else {
+ var = parser_find_var(parser, parser_tokval(parser));
+ if (!var)
+ var = parser_find_field(parser, parser_tokval(parser));
+ }
if (!var) {
parseerror(parser, "unexpected ident: %s", parser_tokval(parser));
goto onerr;
}
- if (!shunt_out_add(&sy, syval(parser_ctx(parser), var))) {
+ if (!shunt_out_add(&sy, syexp(parser_ctx(parser), var))) {
parseerror(parser, "out of memory");
goto onerr;
}
- printf("Added: %s\n", var->name);
- } else if (parser->tok == TOKEN_FLOATCONST) {
+ DEBUGSHUNTDO(printf("push %s\n", parser_tokval(parser)));
+ }
+ else if (parser->tok == TOKEN_FLOATCONST) {
ast_value *val = parser_const_float(parser, (parser_token(parser)->constval.f));
if (!val)
return false;
parseerror(parser, "out of memory");
goto onerr;
}
- } else if (parser->tok == TOKEN_INTCONST) {
+ DEBUGSHUNTDO(printf("push %g\n", parser_token(parser)->constval.f));
+ }
+ else if (parser->tok == TOKEN_INTCONST) {
ast_value *val = parser_const_float(parser, (double)(parser_token(parser)->constval.i));
if (!val)
return false;
parseerror(parser, "out of memory");
goto onerr;
}
- printf("Added: %i\n", parser_token(parser)->constval.i);
- } else {
+ DEBUGSHUNTDO(printf("push %i\n", parser_token(parser)->constval.i));
+ }
+ else if (parser->tok == TOKEN_STRINGCONST) {
+ ast_value *val = parser_const_string(parser, parser_tokval(parser));
+ if (!val)
+ return false;
+ if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
+ parseerror(parser, "out of memory");
+ goto onerr;
+ }
+ DEBUGSHUNTDO(printf("push string\n"));
+ }
+ else if (parser->tok == TOKEN_VECTORCONST) {
+ ast_value *val = parser_const_vector(parser, parser_token(parser)->constval.v);
+ if (!val)
+ return false;
+ if (!shunt_out_add(&sy, syexp(parser_ctx(parser), (ast_expression*)val))) {
+ parseerror(parser, "out of memory");
+ goto onerr;
+ }
+ DEBUGSHUNTDO(printf("push '%g %g %g'\n",
+ parser_token(parser)->constval.v.x,
+ parser_token(parser)->constval.v.y,
+ parser_token(parser)->constval.v.z));
+ }
+ else if (parser->tok == '(') {
+ ++parens;
+ nextwant = false; /* not expecting an operator next */
+ if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 1, 0))) {
+ parseerror(parser, "out of memory");
+ goto onerr;
+ }
+ DEBUGSHUNTDO(printf("push (\n"));
+ }
+ else if (parser->tok == ')') {
+ DEBUGSHUNTDO(printf("do[nop] )\n"));
+ --parens;
+ if (parens < 0)
+ break;
+ /* allowed for function calls */
+ if (!parser_close_paren(parser, &sy, true))
+ goto onerr;
+ }
+ else {
/* TODO: prefix operators */
parseerror(parser, "expected statement");
goto onerr;
}
- wantop = true;
- parser->lex->flags.noops = false;
+ wantop = nextwant;
+ parser->lex->flags.noops = !wantop;
} else {
- if (parser->tok != TOKEN_OPERATOR) {
+ bool nextwant = false;
+ if (parser->tok == '(') {
+ DEBUGSHUNTDO(printf("push (\n"));
+ ++parens;
+ /* we expected an operator, this is the function-call operator */
+ if (!shunt_ops_add(&sy, syparen(parser_ctx(parser), 'f', sy.out_count-1))) {
+ parseerror(parser, "out of memory");
+ goto onerr;
+ }
+ }
+ else if (parser->tok == ')') {
+ DEBUGSHUNTDO(printf("do[op] )\n"));
+ --parens;
+ if (parens < 0)
+ break;
+ /* we do expect an operator next */
+ /* closing an opening paren */
+ if (!parser_close_paren(parser, &sy, false))
+ goto onerr;
+ nextwant = true;
+ }
+ else if (parser->tok != TOKEN_OPERATOR) {
parseerror(parser, "expected operator or end of statement");
goto onerr;
- } else {
+ }
+ else {
/* classify the operator */
/* TODO: suffix operators */
const oper_info *op;
}
/* found an operator */
op = &operators[o];
-
- if (sy.ops_count)
- olast = &operators[sy.ops[sy.ops_count-1].etype-1];
-
- while (olast && (
+ if (op->id == opid1('.')) {
+ /* for gmqcc standard: open up the namespace of the previous type */
+ ast_expression *prevex = sy.out[sy.out_count-1].out;
+ if (!prevex) {
+ parseerror(parser, "unexpected member operator");
+ goto onerr;
+ }
+ if (prevex->expression.vtype == TYPE_ENTITY)
+ parser->memberof = TYPE_ENTITY;
+ else if (prevex->expression.vtype == TYPE_VECTOR)
+ parser->memberof = TYPE_VECTOR;
+ else {
+ parseerror(parser, "type error: type has no members");
+ goto onerr;
+ }
+ gotmemberof = true;
+ }
+
+ if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
+ olast = &operators[sy.ops[sy.ops_count-1].etype-1];
+
+ while (olast && (
(op->prec < olast->prec) ||
(op->assoc == ASSOC_LEFT && op->prec <= olast->prec) ) )
{
if (!parser_sy_pop(parser, &sy))
goto onerr;
- olast = sy.ops_count ? (&operators[sy.ops[sy.ops_count-1].etype-1]) : NULL;
+ if (sy.ops_count && !sy.ops[sy.ops_count-1].paren)
+ olast = &operators[sy.ops[sy.ops_count-1].etype-1];
+ else
+ olast = NULL;
}
+ DEBUGSHUNTDO(printf("push operator %s\n", op->op));
if (!shunt_ops_add(&sy, syop(parser_ctx(parser), op)))
goto onerr;
- printf("Added op %s\n", op->op);
}
- wantop = false;
- parser->lex->flags.noops = true;
+ wantop = nextwant;
+ parser->lex->flags.noops = !wantop;
}
if (!parser_next(parser)) {
goto onerr;
}
if (parser->tok == ';') {
- printf("End of statement\n");
break;
}
}
- if (!parser_next(parser)) {
- parseerror(parser, "Unexpected end of file");
- goto onerr;
- }
while (sy.ops_count) {
if (!parser_sy_pop(parser, &sy))
expr = sy.out[0].out;
MEM_VECTOR_CLEAR(&sy, out);
MEM_VECTOR_CLEAR(&sy, ops);
+ DEBUGSHUNTDO(printf("shut done\n"));
return expr;
onerr:
return NULL;
}
-static bool parser_variable(parser_t *parser, ast_block *localblock);
-static bool parser_body_do(parser_t *parser, ast_block *block)
+static ast_expression* parser_expression(parser_t *parser)
+{
+ ast_expression *e = parser_expression_leave(parser);
+ if (!e)
+ return NULL;
+ if (!parser_next(parser)) {
+ ast_delete(e);
+ return NULL;
+ }
+ return e;
+}
+
+static bool parser_parse_if(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_ifthen *ifthen;
+ ast_expression *cond, *ontrue, *onfalse = NULL;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ /* skip the 'if' and check for opening paren */
+ if (!parser_next(parser) || 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 = parser_expression_leave(parser);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'if' condition");
+ ast_delete(cond);
+ return false;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected statement for on-true branch of 'if'");
+ ast_delete(cond);
+ return false;
+ }
+ ontrue = parser_parse_statement_or_block(parser);
+ if (!ontrue) {
+ ast_delete(cond);
+ return false;
+ }
+ /* 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_delete(cond);
+ return false;
+ }
+ onfalse = parser_parse_statement_or_block(parser);
+ if (!onfalse) {
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+ }
+
+ ifthen = ast_ifthen_new(ctx, cond, ontrue, onfalse);
+ *out = (ast_expression*)ifthen;
+ return true;
+}
+
+static bool parser_parse_while(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *cond, *ontrue;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ /* skip the 'while' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'while' condition in parenthesis");
+ return false;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'while' condition after opening paren");
+ return false;
+ }
+ /* parse the condition */
+ cond = parser_expression_leave(parser);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'while' condition");
+ ast_delete(cond);
+ return false;
+ }
+ /* parse into the 'then' branch */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected while-loop body");
+ ast_delete(cond);
+ return false;
+ }
+ ontrue = parser_parse_statement_or_block(parser);
+ if (!ontrue) {
+ ast_delete(cond);
+ return false;
+ }
+
+ aloop = ast_loop_new(ctx, NULL, cond, NULL, NULL, ontrue);
+ *out = (ast_expression*)aloop;
+ return true;
+}
+
+static bool parser_parse_dowhile(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *cond, *ontrue;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ /* skip the 'do' and get the body */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected loop body");
+ return false;
+ }
+ ontrue = parser_parse_statement_or_block(parser);
+ if (!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 = parser_expression_leave(parser);
+ if (!cond)
+ return false;
+ /* closing paren */
+ if (parser->tok != ')') {
+ parseerror(parser, "expected closing paren after 'while' condition");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+ /* parse on */
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "expected semicolon after condition");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "parse error");
+ ast_delete(ontrue);
+ ast_delete(cond);
+ return false;
+ }
+
+ aloop = ast_loop_new(ctx, NULL, NULL, cond, NULL, ontrue);
+ *out = (ast_expression*)aloop;
+ return true;
+}
+
+static bool parser_parse_for(parser_t *parser, ast_block *block, ast_expression **out)
+{
+ ast_loop *aloop;
+ ast_expression *initexpr, *cond, *increment, *ontrue;
+ size_t oldblocklocal;
+
+ lex_ctx ctx = parser_ctx(parser);
+
+ oldblocklocal = parser->blocklocal;
+ parser->blocklocal = parser->locals_count;
+
+ initexpr = NULL;
+ cond = NULL;
+ increment = NULL;
+ ontrue = NULL;
+
+ /* skip the 'while' and check for opening paren */
+ if (!parser_next(parser) || parser->tok != '(') {
+ parseerror(parser, "expected 'for' expressions in parenthesis");
+ goto onerr;
+ }
+ /* parse into the expression */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected 'for' initializer after opening paren");
+ goto onerr;
+ }
+
+ if (parser->tok == TOKEN_TYPENAME) {
+ if (opts_standard != COMPILER_GMQCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS,
+ "current standard does not allow variable declarations in for-loop initializers"))
+ goto onerr;
+ }
+
+ parseerror(parser, "TODO: assignment of new variables to be non-const");
+ goto onerr;
+ if (!parser_variable(parser, block))
+ goto onerr;
+ }
+ else if (parser->tok != ';')
+ {
+ initexpr = parser_expression_leave(parser);
+ 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 = parser_expression_leave(parser);
+ 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 != ')') {
+ increment = parser_expression_leave(parser);
+ if (!increment)
+ 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;
+ }
+ ontrue = parser_parse_statement_or_block(parser);
+ if (!ontrue) {
+ goto onerr;
+ }
+
+ aloop = ast_loop_new(ctx, initexpr, cond, NULL, increment, ontrue);
+ *out = (ast_expression*)aloop;
+
+ while (parser->locals_count > parser->blocklocal)
+ parser_pop_local(parser);
+ parser->blocklocal = oldblocklocal;
+ return true;
+onerr:
+ if (initexpr) ast_delete(initexpr);
+ if (cond) ast_delete(cond);
+ if (increment) ast_delete(increment);
+ while (parser->locals_count > parser->blocklocal)
+ parser_pop_local(parser);
+ parser->blocklocal = oldblocklocal;
+ return false;
+}
+
+static bool parser_parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
{
if (parser->tok == TOKEN_TYPENAME)
{
/* local variable */
+ if (!block) {
+ parseerror(parser, "cannot declare a variable from here");
+ return false;
+ }
+ if (opts_standard == COMPILER_QCC) {
+ if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
+ return false;
+ }
if (!parser_variable(parser, block))
return false;
+ *out = NULL;
return true;
}
- else if (parser->tok == '{')
+ else if (parser->tok == TOKEN_KEYWORD)
{
- /* a block */
- parseerror(parser, "TODO: inner blocks");
+ if (!strcmp(parser_tokval(parser), "local"))
+ {
+ if (!block) {
+ parseerror(parser, "cannot declare a local variable here");
+ return false;
+ }
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected variable declaration");
+ return false;
+ }
+ if (!parser_variable(parser, block))
+ return false;
+ *out = NULL;
+ return true;
+ }
+ else if (!strcmp(parser_tokval(parser), "return"))
+ {
+ ast_expression *exp = NULL;
+ ast_return *ret = NULL;
+ ast_value *expected = parser->function->vtype;
+
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected return expression");
+ return false;
+ }
+
+ if (parser->tok != ';') {
+ exp = parser_expression(parser);
+ if (!exp)
+ return false;
+
+ if (exp->expression.vtype != expected->expression.next->expression.vtype) {
+ parseerror(parser, "return with invalid expression");
+ }
+
+ ret = ast_return_new(exp->expression.node.context, exp);
+ if (!ret) {
+ ast_delete(exp);
+ return false;
+ }
+
+ *out = (ast_expression*)ret;
+ } else if (!parser_next(parser)) {
+ parseerror(parser, "expected semicolon");
+ if (expected->expression.next->expression.vtype != TYPE_VOID) {
+ parseerror(parser, "return without value");
+ }
+ }
+ return true;
+ }
+ else if (!strcmp(parser_tokval(parser), "if"))
+ {
+ return parser_parse_if(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "while"))
+ {
+ return parser_parse_while(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "do"))
+ {
+ return parser_parse_dowhile(parser, block, out);
+ }
+ else if (!strcmp(parser_tokval(parser), "for"))
+ {
+ return parser_parse_for(parser, block, out);
+ }
+ parseerror(parser, "Unexpected keyword");
return false;
}
+ else if (parser->tok == '{')
+ {
+ ast_block *inner;
+ inner = parser_parse_block(parser);
+ if (!inner)
+ return false;
+ *out = (ast_expression*)inner;
+ return true;
+ }
else
{
ast_expression *exp = parser_expression(parser);
if (!exp)
return false;
- if (!ast_block_exprs_add(block, exp))
- return false;
+ *out = exp;
return true;
}
}
+static void parser_pop_local(parser_t *parser)
+{
+ parser->locals_count--;
+ mem_d(parser->locals[parser->locals_count].name);
+}
+
static ast_block* parser_parse_block(parser_t *parser)
{
size_t oldblocklocal;
while (parser->tok != TOKEN_EOF && parser->tok < TOKEN_ERROR)
{
+ ast_expression *expr;
if (parser->tok == '}')
break;
- if (!parser_body_do(parser, block)) {
+ if (!parser_parse_statement(parser, block, &expr)) {
+ ast_block_delete(block);
+ block = NULL;
+ goto cleanup;
+ }
+ if (!expr)
+ continue;
+ if (!ast_block_exprs_add(block, expr)) {
+ ast_delete(expr);
ast_block_delete(block);
block = NULL;
goto cleanup;
}
cleanup:
+ while (parser->locals_count > parser->blocklocal)
+ parser_pop_local(parser);
parser->blocklocal = oldblocklocal;
+ /* unroll the local vector */
return block;
}
+static ast_expression* parser_parse_statement_or_block(parser_t *parser)
+{
+ ast_expression *expr;
+ if (parser->tok == '{')
+ return (ast_expression*)parser_parse_block(parser);
+ if (!parser_parse_statement(parser, NULL, &expr))
+ return NULL;
+ return expr;
+}
+
static bool parser_variable(parser_t *parser, ast_block *localblock)
{
bool isfunc = false;
ast_function *func = NULL;
lex_ctx ctx;
ast_value *var;
+ varentry_t varent;
+ ast_expression *olddecl;
int basetype = parser_token(parser)->constval.t;
return false;
}
- isfunc = false;
- func = NULL;
+ olddecl = NULL;
+ isfunc = false;
+ func = NULL;
ctx = parser_ctx(parser);
var = parser_parse_type(parser, basetype, &isfunc);
return false;
}
- if (!localblock && parser_find_global(parser, parser_tokval(parser))) {
- ast_value_delete(var);
- parseerror(parser, "global already exists: %s\n", parser_tokval(parser));
- return false;
- }
+ if (!isfunc) {
+ if (!localblock && (olddecl = parser_find_global(parser, parser_tokval(parser)))) {
+ ast_value_delete(var);
+ parseerror(parser, "global %s already declared here: %s:%i\n",
+ parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
+ return false;
+ }
- if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
- ast_value_delete(var);
- parseerror(parser, "local variable already exists: %s\n", parser_tokval(parser));
- return false;
+ if (localblock && parser_find_local(parser, parser_tokval(parser), parser->blocklocal)) {
+ ast_value_delete(var);
+ parseerror(parser, "local %s already declared here: %s:%i\n",
+ parser_tokval(parser), ast_ctx(olddecl).file, (int)ast_ctx(olddecl).line);
+ return false;
+ }
}
if (!ast_value_set_name(var, parser_tokval(parser))) {
if (isfunc) {
/* a function was defined */
ast_value *fval;
+ ast_value *proto = NULL;
+
+ if (!localblock)
+ olddecl = parser_find_global(parser, parser_tokval(parser));
+ else
+ olddecl = parser_find_local(parser, parser_tokval(parser), parser->blocklocal);
+
+ if (olddecl) {
+ /* we had a prototype */
+ if (!ast_istype(olddecl, ast_value)) {
+ /* theoretically not possible you think?
+ * well:
+ * vector v;
+ * void() v_x = {}
+ * got it?
+ */
+ parseerror(parser, "cannot declare a function with the same name as a vector's member: %s",
+ parser_tokval(parser));
+ ast_value_delete(var);
+ return false;
+ }
+
+ proto = (ast_value*)olddecl;
+ }
/* turn var into a value of TYPE_FUNCTION, with the old var
* as return type
}
fval->expression.next = (ast_expression*)var;
- MEM_VECTOR_MOVE(var, params, fval, params);
+ MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
- if (!parser_t_functions_add(parser, func)) {
- ast_value_delete(var);
- if (fval) ast_value_delete(fval);
- if (func) ast_function_delete(func);
- return false;
+ /* we compare the type late here, but it's easier than
+ * messing with the parameter-vector etc. earlier
+ */
+ if (proto) {
+ if (!ast_compare_type((ast_expression*)proto, (ast_expression*)fval)) {
+ parseerror(parser, "prototype declared at %s:%i had a different type",
+ ast_ctx(proto).file, ast_ctx(proto).line);
+ ast_function_delete(func);
+ ast_value_delete(fval);
+ return false;
+ }
+ ast_function_delete(func);
+ ast_value_delete(fval);
+ var = proto;
+ func = var->constval.vfunc;
+ }
+ else
+ {
+ if (!parser_t_functions_add(parser, func)) {
+ ast_function_delete(func);
+ ast_value_delete(fval);
+ return false;
+ }
}
var = fval;
}
- if ( (!localblock && !parser_t_globals_add(parser, var)) ||
- ( localblock && !parser_t_locals_add(parser, var)) )
+ varent.name = util_strdup(var->name);
+ varent.var = (ast_expression*)var;
+ if (var->expression.vtype == TYPE_VECTOR)
{
- ast_value_delete(var);
- return false;
+ size_t len = strlen(varent.name);
+ varentry_t vx, vy, vz;
+ vx.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 0);
+ vy.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 1);
+ vz.var = (ast_expression*)ast_member_new(var->expression.node.context, (ast_expression*)var, 2);
+ vx.name = mem_a(len+3);
+ vy.name = mem_a(len+3);
+ vz.name = mem_a(len+3);
+ strcpy(vx.name, varent.name);
+ strcpy(vy.name, varent.name);
+ strcpy(vz.name, varent.name);
+ vx.name[len] = vy.name[len] = vz.name[len] = '_';
+ vx.name[len+1] = 'x';
+ vy.name[len+1] = 'y';
+ vz.name[len+1] = 'z';
+ vx.name[len+2] = vy.name[len+2] = vz.name[len+2] = 0;
+
+ if (!localblock) {
+ (void)!parser_t_globals_add(parser, varent);
+ (void)!parser_t_globals_add(parser, vx);
+ (void)!parser_t_globals_add(parser, vy);
+ (void)!parser_t_globals_add(parser, vz);
+ } else {
+ (void)!parser_t_locals_add(parser, varent);
+ (void)!parser_t_locals_add(parser, vx);
+ (void)!parser_t_locals_add(parser, vy);
+ (void)!parser_t_locals_add(parser, vz);
+ }
+ }
+ else
+ {
+ if ( (!localblock && !parser_t_globals_add(parser, varent)) ||
+ ( localblock && !parser_t_locals_add(parser, varent)) )
+ {
+ ast_value_delete(var);
+ return false;
+ }
}
if (localblock && !ast_block_locals_add(localblock, var))
{
- parser->locals_count--;
+ parser_pop_local(parser);
ast_value_delete(var);
return false;
}
ast_block_delete(block);
return false;
}
+
+ if (parser->tok == ';')
+ return parser_next(parser) || parser->tok == TOKEN_EOF;
+ else if (opts_standard == COMPILER_QCC)
+ parseerror(parser, "missing semicolon after function body (mandatory with -std=qcc)");
return true;
} else {
parseerror(parser, "TODO, const assignment");
}
else if (parser->tok == '.')
{
+ ast_value *var;
+ ast_value *fld;
+ bool isfunc = false;
+ int basetype;
+ lex_ctx ctx = parser_ctx(parser);
+ varentry_t varent;
+
/* entity-member declaration */
- return false;
+ if (!parser_next(parser) || parser->tok != TOKEN_TYPENAME) {
+ parseerror(parser, "expected member variable definition");
+ return false;
+ }
+
+ /* remember the base/return type */
+ basetype = parser_token(parser)->constval.t;
+
+ /* parse into the declaration */
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected field def");
+ return false;
+ }
+
+ /* parse the field type fully */
+ var = parser_parse_type(parser, basetype, &isfunc);
+ if (!var)
+ return false;
+
+ /* now the field name */
+ if (parser->tok != TOKEN_IDENT) {
+ parseerror(parser, "expected field name");
+ ast_delete(var);
+ return false;
+ }
+
+ /* check for an existing field
+ * in original qc we also have to check for an existing
+ * global named like the field
+ */
+ if (opts_standard == COMPILER_QCC) {
+ if (parser_find_global(parser, parser_tokval(parser))) {
+ parseerror(parser, "cannot declare a field and a global of the same name with -std=qcc");
+ ast_delete(var);
+ return false;
+ }
+ }
+ if (parser_find_field(parser, parser_tokval(parser))) {
+ parseerror(parser, "field %s already exists", parser_tokval(parser));
+ ast_delete(var);
+ return false;
+ }
+
+ /* if it was a function, turn it into a function */
+ if (isfunc) {
+ ast_value *fval;
+ /* turn var into a value of TYPE_FUNCTION, with the old var
+ * as return type
+ */
+ fval = ast_value_new(ctx, var->name, TYPE_FUNCTION);
+ if (!fval) {
+ ast_value_delete(var);
+ ast_value_delete(fval);
+ return false;
+ }
+
+ fval->expression.next = (ast_expression*)var;
+ MEM_VECTOR_MOVE(&var->expression, params, &fval->expression, params);
+
+ var = fval;
+ }
+
+ /* turn it into a field */
+ fld = ast_value_new(ctx, parser_tokval(parser), TYPE_FIELD);
+ fld->expression.next = (ast_expression*)var;
+
+ varent.var = (ast_expression*)fld;
+ if (var->expression.vtype == TYPE_VECTOR)
+ {
+ /* create _x, _y and _z fields as well */
+ parseerror(parser, "TODO: vector field members (_x,_y,_z)");
+ ast_delete(fld);
+ return false;
+ }
+
+ varent.name = util_strdup(fld->name);
+ (void)!parser_t_fields_add(parser, varent);
+
+ /* end with a semicolon */
+ if (!parser_next(parser) || parser->tok != ';') {
+ parseerror(parser, "semicolon expected");
+ return false;
+ }
+
+ /* skip the semicolon */
+ if (!parser_next(parser))
+ return parser->tok == TOKEN_EOF;
+
+ return true;
}
else
{
return true;
}
-bool parser_compile(const char *filename)
-{
- size_t i;
- parser_t *parser;
- ir_builder *ir;
+static parser_t *parser;
+bool parser_init()
+{
parser = (parser_t*)mem_a(sizeof(parser_t));
if (!parser)
return false;
MEM_VECTOR_INIT(parser, globals);
MEM_VECTOR_INIT(parser, locals);
- parser->lex = lex_open(filename);
+ return true;
+}
+bool parser_compile(const char *filename)
+{
+ parser->lex = lex_open(filename);
if (!parser->lex) {
printf("failed to open file \"%s\"\n", filename);
return false;
if (!parser_do(parser)) {
if (parser->tok == TOKEN_EOF)
parseerror(parser, "unexpected eof");
- else
+ else if (!parser->errors)
parseerror(parser, "parse error\n");
lex_close(parser->lex);
mem_d(parser);
lex_close(parser->lex);
- ir = ir_builder_new("gmqcc_out");
- if (!ir) {
- printf("failed to allocate builder\n");
- goto cleanup;
- }
+ return !parser->errors;
+}
+void parser_cleanup()
+{
+ size_t i;
+ for (i = 0; i < parser->functions_count; ++i) {
+ ast_delete(parser->functions[i]);
+ }
+ for (i = 0; i < parser->imm_vector_count; ++i) {
+ ast_delete(parser->imm_vector[i]);
+ }
+ for (i = 0; i < parser->imm_string_count; ++i) {
+ ast_delete(parser->imm_string[i]);
+ }
for (i = 0; i < parser->imm_float_count; ++i) {
- if (!ast_global_codegen(parser->imm_float[i], ir)) {
- printf("failed to generate global %s\n", parser->imm_float[i]->name);
- }
+ ast_delete(parser->imm_float[i]);
}
for (i = 0; i < parser->globals_count; ++i) {
- if (!ast_global_codegen(parser->globals[i], ir)) {
- printf("failed to generate global %s\n", parser->globals[i]->name);
- }
+ ast_delete(parser->globals[i].var);
+ mem_d(parser->globals[i].name);
}
- for (i = 0; i < parser->functions_count; ++i) {
- if (!ast_function_codegen(parser->functions[i], ir)) {
- printf("failed to generate function %s\n", parser->functions[i]->name);
+ MEM_VECTOR_CLEAR(parser, globals);
+
+ mem_d(parser);
+}
+
+bool parser_finish(const char *output)
+{
+ size_t i;
+ ir_builder *ir;
+
+ if (!parser->errors)
+ {
+ ir = ir_builder_new("gmqcc_out");
+ if (!ir) {
+ printf("failed to allocate builder\n");
+ return false;
}
- if (!ir_function_finalize(parser->functions[i]->ir_func)) {
- printf("failed to finalize function %s\n", parser->functions[i]->name);
+
+ for (i = 0; i < parser->imm_float_count; ++i) {
+ if (!ast_global_codegen(parser->imm_float[i], ir)) {
+ printf("failed to generate global %s\n", parser->imm_float[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < parser->imm_string_count; ++i) {
+ if (!ast_global_codegen(parser->imm_string[i], ir)) {
+ printf("failed to generate global %s\n", parser->imm_string[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < parser->imm_vector_count; ++i) {
+ if (!ast_global_codegen(parser->imm_vector[i], ir)) {
+ printf("failed to generate global %s\n", parser->imm_vector[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < parser->fields_count; ++i) {
+ ast_value *field;
+ bool isconst;
+ if (!ast_istype(parser->fields[i].var, ast_value))
+ continue;
+ field = (ast_value*)parser->fields[i].var;
+ isconst = field->isconst;
+ field->isconst = false;
+ if (!ast_global_codegen((ast_value*)field, ir)) {
+ printf("failed to generate field %s\n", field->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ if (isconst) {
+ ir_value *ifld;
+ ast_expression *subtype;
+ field->isconst = true;
+ subtype = field->expression.next;
+ ifld = ir_builder_create_field(ir, field->name, subtype->expression.vtype);
+ if (subtype->expression.vtype == TYPE_FIELD)
+ ifld->fieldtype = subtype->expression.next->expression.vtype;
+ else if (subtype->expression.vtype == TYPE_FUNCTION)
+ ifld->outtype = subtype->expression.next->expression.vtype;
+ (void)!ir_value_set_field(field->ir_v, ifld);
+ }
+ }
+ for (i = 0; i < parser->globals_count; ++i) {
+ if (!ast_istype(parser->globals[i].var, ast_value))
+ continue;
+ if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
+ printf("failed to generate global %s\n", parser->globals[i].name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ }
+ for (i = 0; i < parser->functions_count; ++i) {
+ if (!ast_function_codegen(parser->functions[i], ir)) {
+ printf("failed to generate function %s\n", parser->functions[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
+ if (!ir_function_finalize(parser->functions[i]->ir_func)) {
+ printf("failed to finalize function %s\n", parser->functions[i]->name);
+ ir_builder_delete(ir);
+ return false;
+ }
}
- }
- ir_builder_dump(ir, printf);
+ if (opts_dump)
+ ir_builder_dump(ir, printf);
-cleanup:
- for (i = 0; i < parser->globals_count; ++i) {
- ast_value_delete(parser->globals[i]);
+ if (!ir_builder_generate(ir, output)) {
+ printf("*** failed to generate output file\n");
+ ir_builder_delete(ir);
+ return false;
+ }
+
+ ir_builder_delete(ir);
+ return true;
}
- MEM_VECTOR_CLEAR(parser, globals);
- mem_d(parser);
- return true;
+ printf("*** there were compile errors\n");
+ return false;
}