size_t errors;
+ /* we store the '=' operator info */
+ const oper_info *assign_op;
+
/* 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
MEM_VEC_FUNCTIONS(parser_t, ast_function*, functions)
static bool GMQCC_WARN parser_pop_local(parser_t *parser);
-static bool parse_variable(parser_t *parser, ast_block *localblock);
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields);
static ast_block* parse_block(parser_t *parser, bool warnreturn);
static bool parse_block_into(parser_t *parser, ast_block *block, bool warnreturn);
static ast_expression* parse_statement_or_block(parser_t *parser);
case opid1('='):
if (ast_istype(exprs[0], ast_entfield)) {
ast_expression *field = ((ast_entfield*)exprs[0])->field;
- assignop = type_storep_instr[exprs[0]->expression.vtype];
+ if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
+ exprs[0]->expression.vtype == TYPE_FIELD &&
+ exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
+ {
+ assignop = type_storep_instr[TYPE_VECTOR];
+ }
+ else
+ assignop = type_storep_instr[exprs[0]->expression.vtype];
if (!ast_compare_type(field->expression.next, exprs[1])) {
char ty1[1024];
char ty2[1024];
}
else
{
- assignop = type_store_instr[exprs[0]->expression.vtype];
+ if (OPTS_FLAG(ADJUST_VECTOR_FIELDS) &&
+ exprs[0]->expression.vtype == TYPE_FIELD &&
+ exprs[0]->expression.next->expression.vtype == TYPE_VECTOR)
+ {
+ assignop = type_store_instr[TYPE_VECTOR];
+ }
+ else
+ assignop = type_store_instr[exprs[0]->expression.vtype];
if (!ast_compare_type(exprs[0], exprs[1])) {
char ty1[1024];
char ty2[1024];
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 == ')') {
if (wantop) {
DEBUGSHUNTDO(printf("do[op] )\n"));
parseerror(parser, "TODO: assignment of new variables to be non-const");
goto onerr;
- if (!parse_variable(parser, block))
+ if (!parse_variable(parser, block, true))
goto onerr;
}
else if (parser->tok != ';')
static bool parse_statement(parser_t *parser, ast_block *block, ast_expression **out)
{
- if (parser->tok == TOKEN_TYPENAME)
+ if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
{
/* local variable */
if (!block) {
if (parsewarning(parser, WARN_EXTENSIONS, "missing 'local' keyword when declaring a local variable"))
return false;
}
- if (!parse_variable(parser, block))
+ if (!parse_variable(parser, block, false))
return false;
*out = NULL;
return true;
parseerror(parser, "expected variable declaration");
return false;
}
- if (!parse_variable(parser, block))
+ if (!parse_variable(parser, block, true))
return false;
*out = NULL;
return true;
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);
+
+ if (!cexp || !ast_istype(cexp, ast_value)) {
+ if (cexp)
+ ast_delete(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_delete(cexp);
+ ast_delete(var);
+ parseerror(parser, "array-size must be a positive integer constant");
+ return NULL;
+ }
+ ast_delete(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
return NULL;
}
- /* an opening paren now starts the parameter-list of a function */
+ /* 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;
}
- /* 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;
- }
-
- while (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 */
name = util_strdup(parser_tokval(parser));
/* parse on */
if (!parser_next(parser)) {
+ ast_delete(var);
parseerror(parser, "error after variable or field declaration");
return NULL;
}
}
+ /* now this may be an array */
+ if (parser->tok == '[') {
+ var = parse_arraysize(parser, var);
+ if (!var)
+ 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_standard == COMPILER_QCC)
+ parseerror(parser, "C-style function syntax is not allowed in -std=qcc");
while (parser->tok == '(') {
var = parse_parameter_list(parser, var);
if (!var) {
if (name)
mem_d((void*)name);
+ ast_delete(var);
return NULL;
}
}
return var;
}
-static bool parse_variable(parser_t *parser, ast_block *localblock)
+static bool parse_variable(parser_t *parser, ast_block *localblock, bool nofields)
{
ast_value *var;
ast_value *proto;
bool isparam = false;
bool isvector = false;
bool cleanvar = true;
+ bool wasarray = false;
varentry_t varent, ve[3];
while (true) {
proto = NULL;
+ wasarray = false;
/* Part 0: finish the type */
+ if (parser->tok == '(') {
+ if (opts_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, "functions cannot return arrays");
+ /* we'll still parse the type completely for now */
+ }
+ /* for functions returning functions */
while (parser->tok == '(') {
+ if (opts_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;
}
}
- if (var->expression.vtype == TYPE_FIELD)
+ if (!nofields && var->expression.vtype == TYPE_FIELD)
{
/* deal with field declarations */
old = parser_find_field(parser, var->name);
if (!localblock) {
/* deal with global variables, fields, functions */
- if (var->expression.vtype == TYPE_FIELD) {
+ if (!nofields && var->expression.vtype == TYPE_FIELD) {
if (!(retval = parser_t_fields_add(parser, varent)))
goto cleanup;
if (isvector) {
if (parser->tok == ',')
goto another;
- if (!var || (!localblock && basetype->expression.vtype == TYPE_FIELD)) {
+ if (!var || (!localblock && !nofields && basetype->expression.vtype == TYPE_FIELD)) {
parseerror(parser, "missing comma or semicolon while parsing variables");
break;
}
if (!cexp)
break;
- cval = (ast_value*)cexp;
- if (!ast_istype(cval, ast_value) || !cval->isconst)
- parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
- else
- {
- var->isconst = true;
- if (cval->expression.vtype == TYPE_STRING)
- var->constval.vstring = parser_strdup(cval->constval.vstring);
+ if (!localblock) {
+ cval = (ast_value*)cexp;
+ if (!ast_istype(cval, ast_value) || !cval->isconst)
+ parseerror(parser, "cannot initialize a global constant variable with a non-constant expression");
else
- memcpy(&var->constval, &cval->constval, sizeof(var->constval));
- ast_unref(cval);
+ {
+ var->isconst = true;
+ if (cval->expression.vtype == TYPE_STRING)
+ var->constval.vstring = parser_strdup(cval->constval.vstring);
+ else
+ memcpy(&var->constval, &cval->constval, sizeof(var->constval));
+ ast_unref(cval);
+ }
+ } else {
+ shunt sy;
+ MEM_VECTOR_INIT(&sy, out);
+ MEM_VECTOR_INIT(&sy, ops);
+ if (!shunt_out_add(&sy, syexp(ast_ctx(var), (ast_expression*)var)) ||
+ !shunt_out_add(&sy, syexp(ast_ctx(cexp), (ast_expression*)cexp)) ||
+ !shunt_ops_add(&sy, syop(ast_ctx(var), parser->assign_op)))
+ {
+ parseerror(parser, "internal error: failed to prepare initializer");
+ ast_unref(cexp);
+ }
+ else if (!parser_sy_pop(parser, &sy))
+ ast_unref(cexp);
+ else {
+ if (sy.out_count != 1 && sy.ops_count != 0)
+ parseerror(parser, "internal error: leaked operands");
+ else if (!ast_block_exprs_add(localblock, (ast_expression*)sy.out[0].out)) {
+ parseerror(parser, "failed to create intializing expression");
+ ast_unref(sy.out[0].out);
+ ast_unref(cexp);
+ }
+ }
+ MEM_VECTOR_CLEAR(&sy, out);
+ MEM_VECTOR_CLEAR(&sy, ops);
}
}
{
if (parser->tok == TOKEN_TYPENAME || parser->tok == '.')
{
- return parse_variable(parser, NULL);
+ return parse_variable(parser, NULL, false);
}
else if (parser->tok == TOKEN_KEYWORD)
{
/* handle 'var' and 'const' */
+ if (!strcmp(parser_tokval(parser), "var")) {
+ if (!parser_next(parser)) {
+ parseerror(parser, "expected variable declaration after 'var'");
+ return false;
+ }
+ return parse_variable(parser, NULL, true);
+ }
return false;
}
else if (parser->tok == '$')
bool parser_init()
{
+ size_t i;
parser = (parser_t*)mem_a(sizeof(parser_t));
if (!parser)
return false;
memset(parser, 0, sizeof(*parser));
+
+ 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 false;
+ }
return true;
}
field = (ast_value*)parser->fields[i].var;
isconst = field->isconst;
field->isconst = false;
- if (!ast_global_codegen((ast_value*)field, ir)) {
+ if (!ast_global_codegen((ast_value*)field, ir, true)) {
printf("failed to generate field %s\n", field->name);
ir_builder_delete(ir);
return false;
"unused global: `%s`", asvalue->name);
}
}
- if (!ast_global_codegen(asvalue, ir)) {
+ if (!ast_global_codegen(asvalue, ir, false)) {
printf("failed to generate global %s\n", parser->globals[i].name);
ir_builder_delete(ir);
return false;
}
}
for (i = 0; i < parser->imm_float_count; ++i) {
- if (!ast_global_codegen(parser->imm_float[i], ir)) {
+ if (!ast_global_codegen(parser->imm_float[i], ir, false)) {
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)) {
+ if (!ast_global_codegen(parser->imm_string[i], ir, false)) {
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)) {
+ if (!ast_global_codegen(parser->imm_vector[i], ir, false)) {
printf("failed to generate global %s\n", parser->imm_vector[i]->name);
ir_builder_delete(ir);
return false;