X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=parser.c;h=3c37a9c4dfc04c4b3c3975e07a5ab46b87f00402;hb=ec301261c69a95e994cf1d82b084713bf23fb5ab;hp=18e428543a49a905b912f20786adb462cd27c0b2;hpb=2f4d5b48891698c9c271382559f5e0380f5431b4;p=cparser diff --git a/parser.c b/parser.c index 18e4285..3c37a9c 100644 --- a/parser.c +++ b/parser.c @@ -4,9 +4,12 @@ #include #include +#include "diagnostic.h" +#include "format_check.h" #include "parser.h" #include "lexer.h" #include "token_t.h" +#include "types.h" #include "type_t.h" #include "type_hash.h" #include "ast_t.h" @@ -46,22 +49,10 @@ static context_t *context = NULL; static declaration_t *last_declaration = NULL; static declaration_t *current_function = NULL; static struct obstack temp_obst; -static bool found_error; - -static type_t *type_int = NULL; -static type_t *type_long_double = NULL; -static type_t *type_double = NULL; -static type_t *type_float = NULL; -static type_t *type_char = NULL; -static type_t *type_string = NULL; -static type_t *type_void = NULL; -static type_t *type_void_ptr = NULL; -static type_t *type_valist = NULL; - -type_t *type_size_t = NULL; -type_t *type_ptrdiff_t = NULL; -type_t *type_wchar_t = NULL; -type_t *type_wchar_t_ptr = NULL; + +#define HERE token.source_position + +static type_t *type_valist; static statement_t *parse_compound_statement(void); static statement_t *parse_statement(void); @@ -129,6 +120,10 @@ static void semantic_comparison(binary_expression_t *expression); TYPE_QUALIFIERS \ TYPE_SPECIFIERS +/** + * Allocate an AST node with given size and + * initialize all fields with zero. + */ static void *allocate_ast_zero(size_t size) { void *res = allocate_ast(size); @@ -136,7 +131,12 @@ static void *allocate_ast_zero(size_t size) return res; } -static size_t get_statement_struct_size(statement_type_t type) +/** + * Returns the size of a statement node. + * + * @param kind the statement kind + */ +static size_t get_statement_struct_size(statement_kind_t kind) { static const size_t sizes[] = { [STATEMENT_COMPOUND] = sizeof(compound_statement_t), @@ -155,22 +155,30 @@ static size_t get_statement_struct_size(statement_type_t type) [STATEMENT_FOR] = sizeof(for_statement_t), [STATEMENT_ASM] = sizeof(asm_statement_t) }; - assert(type <= sizeof(sizes) / sizeof(sizes[0])); - assert(sizes[type] != 0); - return sizes[type]; + assert(kind <= sizeof(sizes) / sizeof(sizes[0])); + assert(sizes[kind] != 0); + return sizes[kind]; } -static statement_t *allocate_statement_zero(statement_type_t type) +/** + * Allocate a statement node of given kind and initialize all + * fields with zero. + */ +static statement_t *allocate_statement_zero(statement_kind_t kind) { - size_t size = get_statement_struct_size(type); + size_t size = get_statement_struct_size(kind); statement_t *res = allocate_ast_zero(size); - res->base.type = type; + res->base.kind = kind; return res; } - -static size_t get_expression_struct_size(expression_type_t type) +/** + * Returns the size of an expression node. + * + * @param kind the expression kind + */ +static size_t get_expression_struct_size(expression_kind_t kind) { static const size_t sizes[] = { [EXPR_INVALID] = sizeof(expression_base_t), @@ -189,32 +197,43 @@ static size_t get_expression_struct_size(expression_type_t type) [EXPR_FUNCTION] = sizeof(string_literal_expression_t), [EXPR_PRETTY_FUNCTION] = sizeof(string_literal_expression_t), [EXPR_BUILTIN_SYMBOL] = sizeof(builtin_symbol_expression_t), + [EXPR_BUILTIN_CONSTANT_P] = sizeof(builtin_constant_expression_t), + [EXPR_BUILTIN_PREFETCH] = sizeof(builtin_prefetch_expression_t), [EXPR_OFFSETOF] = sizeof(offsetof_expression_t), [EXPR_VA_START] = sizeof(va_start_expression_t), [EXPR_VA_ARG] = sizeof(va_arg_expression_t), [EXPR_STATEMENT] = sizeof(statement_expression_t), }; - if(type >= EXPR_UNARY_FIRST && type <= EXPR_UNARY_LAST) { + if(kind >= EXPR_UNARY_FIRST && kind <= EXPR_UNARY_LAST) { return sizes[EXPR_UNARY_FIRST]; } - if(type >= EXPR_BINARY_FIRST && type <= EXPR_BINARY_LAST) { + if(kind >= EXPR_BINARY_FIRST && kind <= EXPR_BINARY_LAST) { return sizes[EXPR_BINARY_FIRST]; } - assert(type <= sizeof(sizes) / sizeof(sizes[0])); - assert(sizes[type] != 0); - return sizes[type]; + assert(kind <= sizeof(sizes) / sizeof(sizes[0])); + assert(sizes[kind] != 0); + return sizes[kind]; } -static expression_t *allocate_expression_zero(expression_type_t type) +/** + * Allocate an expression node of given kind and initialize all + * fields with zero. + */ +static expression_t *allocate_expression_zero(expression_kind_t kind) { - size_t size = get_expression_struct_size(type); + size_t size = get_expression_struct_size(kind); expression_t *res = allocate_ast_zero(size); - res->base.type = type; + res->base.kind = kind; return res; } -static size_t get_type_struct_size(type_type_t type) +/** + * Returns the size of a type node. + * + * @param kind the type kind + */ +static size_t get_type_struct_size(type_kind_t kind) { static const size_t sizes[] = { [TYPE_ATOMIC] = sizeof(atomic_type_t), @@ -229,22 +248,31 @@ static size_t get_type_struct_size(type_type_t type) [TYPE_TYPEOF] = sizeof(typeof_type_t), }; assert(sizeof(sizes) / sizeof(sizes[0]) == (int) TYPE_TYPEOF + 1); - assert(type <= TYPE_TYPEOF); - assert(sizes[type] != 0); - return sizes[type]; + assert(kind <= TYPE_TYPEOF); + assert(sizes[kind] != 0); + return sizes[kind]; } -static type_t *allocate_type_zero(type_type_t type) +/** + * Allocate a type node of given kind and initialize all + * fields with zero. + */ +static type_t *allocate_type_zero(type_kind_t kind) { - size_t size = get_type_struct_size(type); + size_t size = get_type_struct_size(kind); type_t *res = obstack_alloc(type_obst, size); memset(res, 0, size); - res->base.type = type; + res->base.kind = kind; return res; } -static size_t get_initializer_size(initializer_type_t type) +/** + * Returns the size of an initializer node. + * + * @param kind the initializer kind + */ +static size_t get_initializer_size(initializer_kind_t kind) { static const size_t sizes[] = { [INITIALIZER_VALUE] = sizeof(initializer_value_t), @@ -252,39 +280,51 @@ static size_t get_initializer_size(initializer_type_t type) [INITIALIZER_WIDE_STRING] = sizeof(initializer_wide_string_t), [INITIALIZER_LIST] = sizeof(initializer_list_t) }; - assert(type < sizeof(sizes) / sizeof(*sizes)); - assert(sizes[type] != 0); - return sizes[type]; + assert(kind < sizeof(sizes) / sizeof(*sizes)); + assert(sizes[kind] != 0); + return sizes[kind]; } -static initializer_t *allocate_initializer(initializer_type_t type) +/** + * Allocate an initializer node of given kind and initialize all + * fields with zero. + */ +static initializer_t *allocate_initializer_zero(initializer_kind_t kind) { - initializer_t *result = allocate_ast_zero(get_initializer_size(type)); - result->type = type; + initializer_t *result = allocate_ast_zero(get_initializer_size(kind)); + result->kind = kind; return result; } +/** + * Free a type from the type obstack. + */ static void free_type(void *type) { obstack_free(type_obst, type); } /** - * returns the top element of the environment stack + * Returns the index of the top element of the environment stack. */ static size_t environment_top(void) { return ARR_LEN(environment_stack); } +/** + * Returns the index of the top element of the label stack. + */ static size_t label_top(void) { return ARR_LEN(label_stack); } - +/** + * Return the next token. + */ static inline void next_token(void) { token = lookahead_buffer[lookahead_bufpos]; @@ -299,6 +339,9 @@ static inline void next_token(void) #endif } +/** + * Return the next token with a given lookahead. + */ static inline const token_t *look_ahead(int num) { assert(num > 0 && num <= MAX_LOOKAHEAD); @@ -308,121 +351,41 @@ static inline const token_t *look_ahead(int num) #define eat(token_type) do { assert(token.type == token_type); next_token(); } while(0) -static void error(void) -{ - found_error = true; -#ifdef ABORT_ON_ERROR - abort(); -#endif -} - -static void parser_print_prefix_pos(const source_position_t source_position) -{ - fputs(source_position.input_name, stderr); - fputc(':', stderr); - fprintf(stderr, "%u", source_position.linenr); - fputs(": ", stderr); -} - -static void parser_print_error_prefix_pos( - const source_position_t source_position) -{ - parser_print_prefix_pos(source_position); - fputs("error: ", stderr); - error(); -} - -static void parser_print_error_prefix(void) -{ - parser_print_error_prefix_pos(token.source_position); -} - -static void parse_error(const char *message) -{ - parser_print_error_prefix(); - fprintf(stderr, "parse error: %s\n", message); -} - -static void parser_print_warning_prefix_pos( - const source_position_t source_position) -{ - parser_print_prefix_pos(source_position); - fputs("warning: ", stderr); -} - -static void parser_print_warning_prefix(void) -{ - parser_print_warning_prefix_pos(token.source_position); -} - -static void parse_warning_pos(const source_position_t source_position, - const char *const message) -{ - parser_print_prefix_pos(source_position); - fprintf(stderr, "warning: %s\n", message); -} - -static void parse_warning(const char *message) -{ - parse_warning_pos(token.source_position, message); -} - +/** + * Report a parse error because an expected token was not found. + */ static void parse_error_expected(const char *message, ...) { - va_list args; - int first = 1; - if(message != NULL) { - parser_print_error_prefix(); - fprintf(stderr, "%s\n", message); - } - parser_print_error_prefix(); - fputs("Parse error: got ", stderr); - print_token(stderr, &token); - fputs(", expected ", stderr); - - va_start(args, message); - token_type_t token_type = va_arg(args, token_type_t); - while(token_type != 0) { - if(first == 1) { - first = 0; - } else { - fprintf(stderr, ", "); - } - print_token_type(stderr, token_type); - token_type = va_arg(args, token_type_t); + errorf(HERE, "%s", message); } - va_end(args); - fprintf(stderr, "\n"); -} - -static void print_type_quoted(type_t *type) -{ - fputc('\'', stderr); - print_type(type); - fputc('\'', stderr); + va_list ap; + va_start(ap, message); + errorf(HERE, "got '%K', expected %#k", &token, &ap, ", "); + va_end(ap); } +/** + * Report a type error. + */ static void type_error(const char *msg, const source_position_t source_position, type_t *type) { - parser_print_error_prefix_pos(source_position); - fprintf(stderr, "%s, but found type ", msg); - print_type_quoted(type); - fputc('\n', stderr); + errorf(source_position, "%s, but found type '%T'", msg, type); } +/** + * Report an incompatible type. + */ static void type_error_incompatible(const char *msg, const source_position_t source_position, type_t *type1, type_t *type2) { - parser_print_error_prefix_pos(source_position); - fprintf(stderr, "%s, incompatible types: ", msg); - print_type_quoted(type1); - fprintf(stderr, " - "); - print_type_quoted(type2); - fprintf(stderr, ")\n"); + errorf(source_position, "%s, incompatible types: '%T' - '%T'", msg, type1, type2); } +/** + * Eat an complete block, ie. '{ ... }'. + */ static void eat_block(void) { if(token.type == '{') @@ -440,6 +403,9 @@ static void eat_block(void) eat('}'); } +/** + * Eat a statement until an ';' token. + */ static void eat_statement(void) { while(token.type != ';') { @@ -456,6 +422,9 @@ static void eat_statement(void) eat(';'); } +/** + * Eat a parenthesed term, ie. '( ... )'. + */ static void eat_paren(void) { if(token.type == '(') @@ -517,8 +486,8 @@ static void set_context(context_t *new_context) } /** - * called when we find a 2nd declarator for an identifier we already have a - * declarator for + * Called when we find a 2nd declarator for an identifier we already have a + * declarator for. */ static bool is_compatible_declaration(declaration_t *declaration, declaration_t *previous) @@ -535,6 +504,10 @@ static bool is_compatible_declaration(declaration_t *declaration, return types_compatible(type1, type2); } +/** + * Search a symbol in a given namespace and returns its declaration or + * NULL if this symbol was not found. + */ static declaration_t *get_declaration(symbol_t *symbol, namespace_t namespc) { declaration_t *declaration = symbol->declaration; @@ -546,6 +519,9 @@ static declaration_t *get_declaration(symbol_t *symbol, namespace_t namespc) return NULL; } +/** + * Return the "prefix" of a given namespace. + */ static const char *get_namespace_prefix(namespace_t namespc) { switch(namespc) { @@ -582,17 +558,8 @@ static declaration_t *stack_push(stack_entry_t **stack_ptr, if(previous_declaration != NULL && previous_declaration->parent_context == context) { if(!is_compatible_declaration(declaration, previous_declaration)) { - parser_print_error_prefix_pos(declaration->source_position); - fprintf(stderr, "definition of symbol '%s%s' with type ", - get_namespace_prefix(namespc), symbol->string); - print_type_quoted(declaration->type); - fputc('\n', stderr); - parser_print_error_prefix_pos( - previous_declaration->source_position); - fprintf(stderr, "is incompatible with previous declaration " - "of type "); - print_type_quoted(previous_declaration->type); - fputc('\n', stderr); + errorf(declaration->source_position, "definition of symbol '%s%s' with type '%T'", get_namespace_prefix(namespc), symbol->string, declaration->type); + errorf(previous_declaration->source_position, "is incompatible with previous declaration of type '%T'", previous_declaration->type); } else { unsigned old_storage_class = previous_declaration->storage_class; unsigned new_storage_class = declaration->storage_class; @@ -602,46 +569,30 @@ static declaration_t *stack_push(stack_entry_t **stack_ptr, if (current_function == NULL) { if (old_storage_class != STORAGE_CLASS_STATIC && new_storage_class == STORAGE_CLASS_STATIC) { - parser_print_error_prefix_pos(declaration->source_position); - fprintf(stderr, - "static declaration of '%s' follows non-static declaration\n", - symbol->string); - parser_print_error_prefix_pos(previous_declaration->source_position); - fprintf(stderr, "previous declaration of '%s' was here\n", - symbol->string); + errorf(declaration->source_position, "static declaration of '%s' follows non-static declaration", symbol->string); + errorf(previous_declaration->source_position, "previous declaration of '%s' was here\n", symbol->string); } else { if (old_storage_class == STORAGE_CLASS_EXTERN) { if (new_storage_class == STORAGE_CLASS_NONE) { previous_declaration->storage_class = STORAGE_CLASS_NONE; } } else if(!is_type_function(type)) { - parser_print_warning_prefix_pos(declaration->source_position); - fprintf(stderr, "redundant declaration for '%s'\n", - symbol->string); - parser_print_warning_prefix_pos(previous_declaration->source_position); - fprintf(stderr, "previous declaration of '%s' was here\n", - symbol->string); + warningf(declaration->source_position, "redundant declaration for '%s'\n", symbol->string); + warningf(previous_declaration->source_position, "previous declaration of '%s' was here\n", symbol->string); } } } else { if (old_storage_class == STORAGE_CLASS_EXTERN && new_storage_class == STORAGE_CLASS_EXTERN) { - parser_print_warning_prefix_pos(declaration->source_position); - fprintf(stderr, "redundant extern declaration for '%s'\n", - symbol->string); - parser_print_warning_prefix_pos(previous_declaration->source_position); - fprintf(stderr, "previous declaration of '%s' was here\n", - symbol->string); + warningf(declaration->source_position, "redundant extern declaration for '%s'\n", symbol->string); + warningf(previous_declaration->source_position, "previous declaration of '%s' was here\n", symbol->string); } else { - parser_print_error_prefix_pos(declaration->source_position); if (old_storage_class == new_storage_class) { - fprintf(stderr, "redeclaration of '%s'\n", symbol->string); + errorf(declaration->source_position, "redeclaration of '%s'\n", symbol->string); } else { - fprintf(stderr, "redeclaration of '%s' with different linkage\n", symbol->string); + errorf(declaration->source_position, "redeclaration of '%s' with different linkage\n", symbol->string); } - parser_print_error_prefix_pos(previous_declaration->source_position); - fprintf(stderr, "previous declaration of '%s' was here\n", - symbol->string); + errorf(previous_declaration->source_position, "previous declaration of '%s' was here", symbol->string); } } } @@ -757,13 +708,13 @@ static int get_rank(const type_t *type) assert(!is_typeref(type)); /* The C-standard allows promoting to int or unsigned int (see § 7.2.2 * and esp. footnote 108). However we can't fold constants (yet), so we - * can't decide wether unsigned int is possible, while int always works. + * can't decide whether unsigned int is possible, while int always works. * (unsigned int would be preferable when possible... for stuff like * struct { enum { ... } bla : 4; } ) */ - if(type->type == TYPE_ENUM) + if(type->kind == TYPE_ENUM) return ATOMIC_TYPE_INT; - assert(type->type == TYPE_ATOMIC); + assert(type->kind == TYPE_ATOMIC); const atomic_type_t *atomic_type = &type->atomic; atomic_type_type_t atype = atomic_type->atype; return atype; @@ -777,6 +728,12 @@ static type_t *promote_integer(type_t *type) return type; } +/** + * Create a cast expression. + * + * @param expression the expression to cast + * @param dest_type the destination type + */ static expression_t *create_cast_expression(expression_t *expression, type_t *dest_type) { @@ -788,17 +745,20 @@ static expression_t *create_cast_expression(expression_t *expression, return cast; } +/** + * Check if a given expression represents the 0 pointer constant. + */ static bool is_null_pointer_constant(const expression_t *expression) { /* skip void* cast */ - if(expression->type == EXPR_UNARY_CAST - || expression->type == EXPR_UNARY_CAST_IMPLICIT) { + if(expression->kind == EXPR_UNARY_CAST + || expression->kind == EXPR_UNARY_CAST_IMPLICIT) { expression = expression->unary.value; } /* TODO: not correct yet, should be any constant integer expression * which evaluates to 0 */ - if (expression->type != EXPR_CONST) + if (expression->kind != EXPR_CONST) return false; type_t *const type = skip_typeref(expression->base.datatype); @@ -808,6 +768,12 @@ static bool is_null_pointer_constant(const expression_t *expression) return expression->conste.v.int_value == 0; } +/** + * Create an implicit cast expression. + * + * @param expression the expression to cast + * @param dest_type the destination type + */ static expression_t *create_implicit_cast(expression_t *expression, type_t *dest_type) { @@ -822,12 +788,12 @@ static expression_t *create_implicit_cast(expression_t *expression, if(source_type == dest_type) return expression; - switch (dest_type->type) { + switch (dest_type->kind) { case TYPE_ENUM: /* TODO warning for implicitly converting to enum */ case TYPE_ATOMIC: - if (source_type->type != TYPE_ATOMIC && - source_type->type != TYPE_ENUM) { + if (source_type->kind != TYPE_ATOMIC && + source_type->kind != TYPE_ENUM) { panic("casting of non-atomic types not implemented yet"); } @@ -841,7 +807,7 @@ static expression_t *create_implicit_cast(expression_t *expression, return create_cast_expression(expression, dest_type); case TYPE_POINTER: - switch (source_type->type) { + switch (source_type->kind) { case TYPE_ATOMIC: if (is_null_pointer_constant(expression)) { return create_cast_expression(expression, dest_type); @@ -910,14 +876,7 @@ static void semantic_assign(type_t *orig_type_left, expression_t **right, unsigned missing_qualifiers = points_to_right->base.qualifiers & ~points_to_left->base.qualifiers; if(missing_qualifiers != 0) { - parser_print_error_prefix(); - fprintf(stderr, "destination type "); - print_type_quoted(type_left); - fprintf(stderr, " in %s from type ", context); - print_type_quoted(type_right); - fprintf(stderr, " lacks qualifiers '"); - print_type_qualifiers(missing_qualifiers); - fprintf(stderr, "' in pointed-to type\n"); + errorf(HERE, "destination type '%T' in %s from type '%T' lacks qualifiers '%Q' in pointed-to type", type_left, context, type_right, missing_qualifiers); return; } @@ -942,13 +901,8 @@ static void semantic_assign(type_t *orig_type_left, expression_t **right, incompatible_assign_types: /* TODO: improve error message */ - parser_print_error_prefix(); - fprintf(stderr, "incompatible types in %s\n", context); - parser_print_error_prefix(); - print_type_quoted(orig_type_left); - fputs(" <- ", stderr); - print_type_quoted(orig_type_right); - fputs("\n", stderr); + errorf(HERE, "incompatible types in %s", context); + errorf(HERE, "'%T' <- '%T'", orig_type_left, orig_type_right); } static expression_t *parse_constant_expression(void) @@ -957,10 +911,7 @@ static expression_t *parse_constant_expression(void) expression_t *result = parse_sub_expression(7); if(!is_constant_expression(result)) { - parser_print_error_prefix_pos(result->base.source_position); - fprintf(stderr, "expression '"); - print_expression(result); - fprintf(stderr, "' is not constant\n"); + errorf(result->base.source_position, "expression '%E' is not constant\n", result); } return result; @@ -974,7 +925,7 @@ static expression_t *parse_assignment_expression(void) static type_t *make_global_typedef(const char *name, type_t *type) { - symbol_t *symbol = symbol_table_insert(name); + symbol_t *const symbol = symbol_table_insert(name); declaration_t *declaration = allocate_ast_zero(sizeof(declaration[0])); declaration->namespc = NAMESPACE_NORMAL; @@ -1018,7 +969,7 @@ static void parse_attributes(void) while(depth > 0) { switch(token.type) { case T_EOF: - parse_error("EOF while parsing attribute"); + errorf(HERE, "EOF while parsing attribute"); break; case '(': next_token(); @@ -1107,7 +1058,7 @@ static initializer_t *initializer_from_string(array_type_t *type, /* TODO: check len vs. size of array type */ (void) type; - initializer_t *initializer = allocate_initializer(INITIALIZER_STRING); + initializer_t *initializer = allocate_initializer_zero(INITIALIZER_STRING); initializer->string.string = string; return initializer; @@ -1120,7 +1071,7 @@ static initializer_t *initializer_from_wide_string(array_type_t *const type, (void) type; initializer_t *const initializer = - allocate_initializer(INITIALIZER_WIDE_STRING); + allocate_initializer_zero(INITIALIZER_WIDE_STRING); initializer->wide_string.string = *string; return initializer; @@ -1133,12 +1084,12 @@ static initializer_t *initializer_from_expression(type_t *type, /* § 6.7.8.14/15 char array may be initialized by string literals */ type_t *const expr_type = expression->base.datatype; - if (is_type_array(type) && expr_type->type == TYPE_POINTER) { + if (is_type_array(type) && expr_type->kind == TYPE_POINTER) { array_type_t *const array_type = &type->array; type_t *const element_type = skip_typeref(array_type->element_type); - if (element_type->type == TYPE_ATOMIC) { - switch (expression->type) { + if (element_type->kind == TYPE_ATOMIC) { + switch (expression->kind) { case EXPR_STRING_LITERAL: if (element_type->atomic.atype == ATOMIC_TYPE_CHAR) { return initializer_from_string(array_type, @@ -1162,7 +1113,7 @@ static initializer_t *initializer_from_expression(type_t *type, if(is_type_scalar(type) || types_compatible(type, expression_type)) { semantic_assign(type, &expression, "initializer"); - initializer_t *result = allocate_initializer(INITIALIZER_VALUE); + initializer_t *result = allocate_initializer_zero(INITIALIZER_VALUE); result->value.value = expression; return result; @@ -1198,7 +1149,7 @@ static initializer_t *parse_sub_initializer(type_t *type, if(token.type == '{') { next_token(); if(!had_initializer_brace_warning) { - parse_warning("braces around scalar initializer"); + warningf(HERE, "braces around scalar initializer"); had_initializer_brace_warning = true; } initializer_t *result = parse_sub_initializer(type, NULL, NULL); @@ -1216,7 +1167,7 @@ static initializer_t *parse_sub_initializer(type_t *type, return initializer_from_expression(type, expression); } - /* does the expression match the currently looked at object to initalize */ + /* does the expression match the currently looked at object to initialize */ if(expression != NULL) { initializer_t *result = initializer_from_expression(type, expression); if(result != NULL) @@ -1265,7 +1216,7 @@ static initializer_t *parse_sub_initializer(type_t *type, sub = parse_sub_initializer_elem(element_type); if(sub == NULL) { /* TODO error, do nicer cleanup */ - parse_error("member initializer didn't match"); + errorf(HERE, "member initializer didn't match"); DEL_ARR_F(elems); return NULL; } @@ -1317,8 +1268,8 @@ static initializer_t *parse_sub_initializer(type_t *type, sub = parse_sub_initializer_elem(iter_type); if(sub == NULL) { - /* TODO error, do nicer cleanup*/ - parse_error("member initializer didn't match"); + /* TODO error, do nicer cleanup */ + errorf(HERE, "member initializer didn't match"); DEL_ARR_F(elems); return NULL; } @@ -1331,7 +1282,7 @@ static initializer_t *parse_sub_initializer(type_t *type, initializer_list_t *init = allocate_ast_zero(sizeof(init[0]) + elems_size); - init->initializer.type = INITIALIZER_LIST; + init->initializer.kind = INITIALIZER_LIST; init->len = len; memcpy(init->initializers, elems, elems_size); DEL_ARR_F(elems); @@ -1356,14 +1307,7 @@ static initializer_t *parse_initializer(type_t *type) expression_t *expression = parse_assignment_expression(); initializer_t *initializer = initializer_from_expression(type, expression); if(initializer == NULL) { - parser_print_error_prefix(); - fprintf(stderr, "initializer expression '"); - print_expression(expression); - fprintf(stderr, "', type "); - print_type_quoted(expression->base.datatype); - fprintf(stderr, " is incompatible with type "); - print_type_quoted(type); - fprintf(stderr, "\n"); + errorf(HERE, "initializer expression '%E', type '%T' is incompatible with type '%T'", expression, expression->base.datatype, type); } return initializer; } @@ -1442,9 +1386,7 @@ static declaration_t *parse_compound_type_specifier(bool is_struct) if(token.type == '{') { if(declaration->init.is_defined) { assert(symbol != NULL); - parser_print_error_prefix(); - fprintf(stderr, "multiple definition of %s %s\n", - is_struct ? "struct" : "union", symbol->string); + errorf(HERE, "multiple definition of %s %s", is_struct ? "struct" : "union", symbol->string); declaration->context.declarations = NULL; } declaration->init.is_defined = true; @@ -1470,7 +1412,7 @@ static void parse_enum_entries(enum_type_t *const enum_type) if(token.type == '}') { next_token(); - parse_error("empty enum not allowed"); + errorf(HERE, "empty enum not allowed"); return; } @@ -1539,9 +1481,7 @@ static type_t *parse_enum_specifier(void) if(token.type == '{') { if(declaration->init.is_defined) { - parser_print_error_prefix(); - fprintf(stderr, "multiple definitions of enum %s\n", - symbol->string); + errorf(HERE, "multiple definitions of enum %s", symbol->string); } record_declaration(declaration); declaration->init.is_defined = 1; @@ -1675,8 +1615,7 @@ static void parse_declaration_specifiers(declaration_specifiers_t *specifiers) #define MATCH_STORAGE_CLASS(token, class) \ case token: \ if(specifiers->storage_class != STORAGE_CLASS_NONE) { \ - parse_error("multiple storage classes in declaration " \ - "specifiers"); \ + errorf(HERE, "multiple storage classes in declaration specifiers"); \ } \ specifiers->storage_class = class; \ next_token(); \ @@ -1703,7 +1642,7 @@ static void parse_declaration_specifiers(declaration_specifiers_t *specifiers) break; default: - parse_error("multiple storage classes in declaration specifiers"); + errorf(HERE, "multiple storage classes in declaration specifiers"); break; } next_token(); @@ -1730,7 +1669,7 @@ static void parse_declaration_specifiers(declaration_specifiers_t *specifiers) case token: \ next_token(); \ if(type_specifiers & specifier) { \ - parse_error("multiple " name " type specifiers given"); \ + errorf(HERE, "multiple " name " type specifiers given"); \ } else { \ type_specifiers |= specifier; \ } \ @@ -1761,7 +1700,7 @@ static void parse_declaration_specifiers(declaration_specifiers_t *specifiers) case T_long: next_token(); if(type_specifiers & SPECIFIER_LONG_LONG) { - parse_error("multiple type specifiers given"); + errorf(HERE, "multiple type specifiers given"); } else if(type_specifiers & SPECIFIER_LONG) { type_specifiers |= SPECIFIER_LONG_LONG; } else { @@ -1912,19 +1851,19 @@ finish_specifiers: /* invalid specifier combination, give an error message */ if(type_specifiers == 0) { #ifndef STRICT_C99 - parse_warning("no type specifiers in declaration, using int"); + warningf(HERE, "no type specifiers in declaration, using int"); atomic_type = ATOMIC_TYPE_INT; break; #else - parse_error("no type specifiers given in declaration"); + errorf(HERE, "no type specifiers given in declaration"); #endif } else if((type_specifiers & SPECIFIER_SIGNED) && (type_specifiers & SPECIFIER_UNSIGNED)) { - parse_error("signed and unsigned specifiers gives"); + errorf(HERE, "signed and unsigned specifiers gives"); } else if(type_specifiers & (SPECIFIER_SIGNED | SPECIFIER_UNSIGNED)) { - parse_error("only integer types can be signed or unsigned"); + errorf(HERE, "only integer types can be signed or unsigned"); } else { - parse_error("multiple datatypes in declaration"); + errorf(HERE, "multiple datatypes in declaration"); } atomic_type = ATOMIC_TYPE_INVALID; } @@ -1934,7 +1873,7 @@ finish_specifiers: newtype = 1; } else { if(type_specifiers != 0) { - parse_error("multiple datatypes in declaration"); + errorf(HERE, "multiple datatypes in declaration"); } } @@ -1996,10 +1935,10 @@ static void semantic_parameter(declaration_t *declaration) /* TODO: improve error messages */ if(declaration->storage_class == STORAGE_CLASS_TYPEDEF) { - parse_error("typedef not allowed in parameter list"); + errorf(HERE, "typedef not allowed in parameter list"); } else if(declaration->storage_class != STORAGE_CLASS_NONE && declaration->storage_class != STORAGE_CLASS_REGISTER) { - parse_error("parameter may only have none or register storage class"); + errorf(HERE, "parameter may only have none or register storage class"); } type_t *orig_type = declaration->type; @@ -2007,7 +1946,7 @@ static void semantic_parameter(declaration_t *declaration) return; type_t *type = skip_typeref(orig_type); - /* Array as last part of a paramter type is just syntactic sugar. Turn it + /* Array as last part of a parameter type is just syntactic sugar. Turn it * into a pointer. § 6.7.5.3 (7) */ if (is_type_array(type)) { const array_type_t *arr_type = &type->array; @@ -2019,11 +1958,7 @@ static void semantic_parameter(declaration_t *declaration) } if(is_type_incomplete(type)) { - parser_print_error_prefix(); - fprintf(stderr, "incomplete type ("); - print_type_quoted(orig_type); - fprintf(stderr, ") not allowed for parameter '%s'\n", - declaration->symbol->string); + errorf(HERE, "incomplete type ('%T') not allowed for parameter '%s'", orig_type, declaration->symbol->string); } } @@ -2239,7 +2174,7 @@ static construct_type_t *parse_inner_declarator(declaration_t *declaration, switch(token.type) { case T_IDENTIFIER: if(declaration == NULL) { - parse_error("no identifier expected in typename"); + errorf(HERE, "no identifier expected in typename"); } else { declaration->symbol = token.v.symbol; declaration->source_position = token.source_position; @@ -2426,11 +2361,8 @@ static declaration_t *record_declaration(declaration_t *declaration) static void parser_error_multiple_definition(declaration_t *declaration, const source_position_t source_position) { - parser_print_error_prefix_pos(source_position); - fprintf(stderr, "multiple definition of symbol '%s'\n", - declaration->symbol->string); - parser_print_error_prefix_pos(declaration->source_position); - fprintf(stderr, "this is the location of the previous definition.\n"); + errorf(source_position, "multiple definition of symbol '%s'", declaration->symbol->string); + errorf(declaration->source_position, "this is the location of the previous definition."); } static bool is_declaration_specifier(const token_t *token, @@ -2467,7 +2399,7 @@ static void parse_init_declarator_rest(declaration_t *declaration) initializer_t *initializer = parse_initializer(type); - /* § 6.7.5 (22) array intializers for arrays with unknown size determine + /* § 6.7.5 (22) array initializers for arrays with unknown size determine * the array type size */ if(type != NULL && is_type_array(type) && initializer != NULL) { array_type_t *array_type = &type->array; @@ -2477,7 +2409,7 @@ static void parse_init_declarator_rest(declaration_t *declaration) cnst->base.datatype = type_size_t; - switch (initializer->type) { + switch (initializer->kind) { case INITIALIZER_LIST: { initializer_list_t *const list = &initializer->list; cnst->conste.v.int_value = list->len; @@ -2505,11 +2437,7 @@ static void parse_init_declarator_rest(declaration_t *declaration) } if(type != NULL && is_type_function(type)) { - parser_print_error_prefix_pos(declaration->source_position); - fprintf(stderr, "initializers not allowed for function types at " - "declator '%s' (type ", declaration->symbol->string); - print_type_quoted(orig_type); - fprintf(stderr, ")\n"); + errorf(declaration->source_position, "initializers not allowed for function types at declator '%s' (type '%T')", declaration->symbol->string, orig_type); } else { declaration->init.initializer = initializer; } @@ -2529,18 +2457,16 @@ static void parse_anonymous_declaration_rest( declaration->source_position = specifiers->source_position; if (declaration->storage_class != STORAGE_CLASS_NONE) { - parse_warning_pos(declaration->source_position, - "useless storage class in empty declaration"); + warningf(declaration->source_position, "useless storage class in empty declaration"); } type_t *type = declaration->type; - switch (type->type) { + switch (type->kind) { case TYPE_COMPOUND_STRUCT: case TYPE_COMPOUND_UNION: { const compound_type_t *compound_type = &type->compound; if (compound_type->declaration->symbol == NULL) { - parse_warning_pos(declaration->source_position, - "unnamed struct/union that defines no instances"); + warningf(declaration->source_position, "unnamed struct/union that defines no instances"); } break; } @@ -2549,8 +2475,7 @@ static void parse_anonymous_declaration_rest( break; default: - parse_warning_pos(declaration->source_position, - "empty declaration"); + warningf(declaration->source_position, "empty declaration"); break; } @@ -2567,10 +2492,8 @@ static void parse_declaration_rest(declaration_t *ndeclaration, type_t *orig_type = declaration->type; type_t *type = skip_typeref(orig_type); - if(type->type != TYPE_FUNCTION && declaration->is_inline) { - parser_print_warning_prefix_pos(declaration->source_position); - fprintf(stderr, "variable '%s' declared 'inline'\n", - declaration->symbol->string); + if(type->kind != TYPE_FUNCTION && declaration->is_inline) { + warningf(declaration->source_position, "variable '%s' declared 'inline'\n", declaration->symbol->string); } if(token.type == '=') { @@ -2651,13 +2574,9 @@ static void parse_kr_declaration_list(declaration_t *declaration) type_t *parameter_type = parameter_declaration->type; if(parameter_type == NULL) { #ifdef STRICT_C99 - parser_print_error_prefix(); - fprintf(stderr, "no type specified for function parameter '%s'\n", - parameter_declaration->symbol->string); + errorf(HERE, "no type specified for function parameter '%s'", parameter_declaration->symbol->string); #else - parser_print_warning_prefix(); - fprintf(stderr, "no type specified for function parameter '%s', " - "using int\n", parameter_declaration->symbol->string); + warningf(HERE, "no type specified for function parameter '%s', using int", parameter_declaration->symbol->string); parameter_type = type_int; parameter_declaration->type = parameter_type; #endif @@ -2728,11 +2647,8 @@ static void parse_external_declaration(void) /* note that we don't skip typerefs: the standard doesn't allow them here * (so we can't use is_type_function here) */ - if(type->type != TYPE_FUNCTION) { - parser_print_error_prefix(); - fprintf(stderr, "declarator '"); - print_type_ext(type, ndeclaration->symbol, NULL); - fprintf(stderr, "' has a body but is not a function type.\n"); + if(type->kind != TYPE_FUNCTION) { + errorf(HERE, "declarator '%#T' has a body but is not a function type", type, ndeclaration->symbol); eat_block(); return; } @@ -2830,7 +2746,7 @@ static void parse_compound_type_entries(void) parse_struct_declarators(&specifiers); } if(token.type == T_EOF) { - parse_error("EOF while parsing struct"); + errorf(HERE, "EOF while parsing struct"); } next_token(); } @@ -2844,7 +2760,7 @@ static type_t *parse_typename(void) /* TODO: improve error message, user does probably not know what a * storage class is... */ - parse_error("typename may not have a storage class"); + errorf(HERE, "typename may not have a storage class"); } type_t *result = parse_abstract_declarator(specifiers.type); @@ -2869,6 +2785,9 @@ struct expression_parser_function_t { expression_parser_function_t expression_parsers[T_LAST_TOKEN]; +/** + * Creates a new invalid expression. + */ static expression_t *create_invalid_expression(void) { expression_t *expression = allocate_expression_zero(EXPR_INVALID); @@ -2878,16 +2797,16 @@ static expression_t *create_invalid_expression(void) static expression_t *expected_expression_error(void) { - parser_print_error_prefix(); - fprintf(stderr, "expected expression, got token "); - print_token(stderr, &token); - fprintf(stderr, "\n"); + errorf(HERE, "expected expression, got token '%K'", &token); next_token(); return create_invalid_expression(); } +/** + * Parse a string constant. + */ static expression_t *parse_string_const(void) { expression_t *cnst = allocate_expression_zero(EXPR_STRING_LITERAL); @@ -2897,6 +2816,9 @@ static expression_t *parse_string_const(void) return cnst; } +/** + * Parse a wide string constant. + */ static expression_t *parse_wide_string_const(void) { expression_t *const cnst = allocate_expression_zero(EXPR_WIDE_STRING_LITERAL); @@ -2906,6 +2828,9 @@ static expression_t *parse_wide_string_const(void) return cnst; } +/** + * Parse an integer constant. + */ static expression_t *parse_int_const(void) { expression_t *cnst = allocate_expression_zero(EXPR_CONST); @@ -2917,6 +2842,9 @@ static expression_t *parse_int_const(void) return cnst; } +/** + * Parse a float constant. + */ static expression_t *parse_float_const(void) { expression_t *cnst = allocate_expression_zero(EXPR_CONST); @@ -2964,6 +2892,13 @@ static declaration_t *create_implicit_function(symbol_t *symbol, return declaration; } +/** + * Creates a return_type (func)(argument_type) function type if not + * already exists. + * + * @param return_type the return type + * @param argument_type the argument type + */ static type_t *make_function_1_type(type_t *return_type, type_t *argument_type) { function_parameter_t *parameter @@ -2983,6 +2918,11 @@ static type_t *make_function_1_type(type_t *return_type, type_t *argument_type) return result; } +/** + * Creates a function type for some function like builtins. + * + * @param symbol the symbol describing the builtin + */ static type_t *get_builtin_symbol_type(symbol_t *symbol) { switch(symbol->ID) { @@ -3002,7 +2942,9 @@ static type_t *get_builtin_symbol_type(symbol_t *symbol) } /** - * performs automatic type cast as described in § 6.3.2.1 + * Performs automatic type cast as described in § 6.3.2.1. + * + * @param orig_type the original type */ static type_t *automatic_type_conversion(type_t *orig_type) { @@ -3034,7 +2976,7 @@ type_t *revert_automatic_type_conversion(const expression_t *expression) if(expression->base.datatype == NULL) return NULL; - switch(expression->type) { + switch(expression->kind) { case EXPR_REFERENCE: { const reference_expression_t *ref = &expression->reference; return ref->declaration->type; @@ -3088,17 +3030,14 @@ static expression_t *parse_reference(void) #ifndef STRICT_C99 /* an implicitly defined function */ if(token.type == '(') { - parser_print_prefix_pos(token.source_position); - fprintf(stderr, "warning: implicit declaration of function '%s'\n", - ref->symbol->string); + warningf(HERE, "implicit declaration of function '%s'\n", ref->symbol->string); declaration = create_implicit_function(ref->symbol, source_position); } else #endif { - parser_print_error_prefix(); - fprintf(stderr, "unknown symbol '%s' found.\n", ref->symbol->string); + errorf(HERE, "unknown symbol '%s' found.\n", ref->symbol->string); return expression; } } @@ -3151,7 +3090,7 @@ static expression_t *parse_statement_expression(void) return NULL; } - assert(statement->type == STATEMENT_COMPOUND); + assert(statement->kind == STATEMENT_COMPOUND); compound_statement_t *compound_statement = &statement->compound; /* find last statement and use it's type */ @@ -3161,7 +3100,7 @@ static expression_t *parse_statement_expression(void) last_statement = iter; } - if(last_statement->type == STATEMENT_EXPRESSION) { + if(last_statement->kind == STATEMENT_EXPRESSION) { const expression_statement_t *expression_statement = &last_statement->expression; expression->base.datatype @@ -3181,7 +3120,7 @@ static expression_t *parse_brace_expression(void) switch(token.type) { case '{': - /* gcc extension: a stement expression */ + /* gcc extension: a statement expression */ return parse_statement_expression(); TYPE_QUALIFIERS @@ -3205,13 +3144,13 @@ static expression_t *parse_function_keyword(void) /* TODO */ if (current_function == NULL) { - parse_error("'__func__' used outside of a function"); + errorf(HERE, "'__func__' used outside of a function"); } string_literal_expression_t *expression = allocate_ast_zero(sizeof(expression[0])); - expression->expression.type = EXPR_FUNCTION; + expression->expression.kind = EXPR_FUNCTION; expression->expression.datatype = type_string; expression->value = current_function->symbol->string; @@ -3224,13 +3163,13 @@ static expression_t *parse_pretty_function_keyword(void) /* TODO */ if (current_function == NULL) { - parse_error("'__PRETTY_FUNCTION__' used outside of a function"); + errorf(HERE, "'__PRETTY_FUNCTION__' used outside of a function"); } string_literal_expression_t *expression = allocate_ast_zero(sizeof(expression[0])); - expression->expression.type = EXPR_PRETTY_FUNCTION; + expression->expression.kind = EXPR_PRETTY_FUNCTION; expression->expression.datatype = type_string; expression->value = current_function->symbol->string; @@ -3314,7 +3253,7 @@ static expression_t *parse_va_start(void) expression->va_starte.ap = parse_assignment_expression(); expect(','); expression_t *const expr = parse_assignment_expression(); - if (expr->type == EXPR_REFERENCE) { + if (expr->kind == EXPR_REFERENCE) { declaration_t *const decl = expr->reference.declaration; if (decl->parent_context == ¤t_function->context && decl->next == NULL) { @@ -3323,9 +3262,7 @@ static expression_t *parse_va_start(void) return expression; } } - parser_print_error_prefix_pos(expr->base.source_position); - fprintf(stderr, "second argument of 'va_start' must be last parameter " - "of the current function\n"); + errorf(expr->base.source_position, "second argument of 'va_start' must be last parameter of the current function"); return create_invalid_expression(); } @@ -3361,6 +3298,42 @@ static expression_t *parse_builtin_symbol(void) return expression; } +static expression_t *parse_builtin_constant(void) +{ + eat(T___builtin_constant_p); + + expression_t *expression = allocate_expression_zero(EXPR_BUILTIN_CONSTANT_P); + + expect('('); + expression->builtin_constant.value = parse_assignment_expression(); + expect(')'); + expression->base.datatype = type_int; + + return expression; +} + +static expression_t *parse_builtin_prefetch(void) +{ + eat(T___builtin_prefetch); + + expression_t *expression = allocate_expression_zero(EXPR_BUILTIN_PREFETCH); + + expect('('); + expression->builtin_prefetch.adr = parse_assignment_expression(); + if (token.type == ',') { + next_token(); + expression->builtin_prefetch.rw = parse_assignment_expression(); + } + if (token.type == ',') { + next_token(); + expression->builtin_prefetch.locality = parse_assignment_expression(); + } + expect(')'); + expression->base.datatype = type_void; + + return expression; +} + static expression_t *parse_compare_builtin(void) { expression_t *expression; @@ -3431,6 +3404,34 @@ static expression_t *parse_builtin_expect(void) return expression; } +static expression_t *parse_assume(void) { + eat(T_assume); + + expression_t *expression + = allocate_expression_zero(EXPR_UNARY_ASSUME); + + expect('('); + expression->unary.value = parse_assignment_expression(); + expect(')'); + + expression->base.datatype = type_void; + return expression; +} + +static expression_t *parse_alignof(void) { + eat(T___alignof__); + + expression_t *expression + = allocate_expression_zero(EXPR_ALIGNOF); + + expect('('); + expression->alignofe.type = parse_typename(); + expect(')'); + + expression->base.datatype = type_size_t; + return expression; +} + static expression_t *parse_primary_expression(void) { switch(token.type) { @@ -3468,15 +3469,20 @@ static expression_t *parse_primary_expression(void) case T___builtin_islessgreater: case T___builtin_isunordered: return parse_compare_builtin(); + case T___builtin_constant_p: + return parse_builtin_constant(); + case T___builtin_prefetch: + return parse_builtin_prefetch(); + case T___alignof__: + return parse_alignof(); + case T_assume: + return parse_assume(); case '(': return parse_brace_expression(); } - parser_print_error_prefix(); - fprintf(stderr, "unexpected token "); - print_token(stderr, &token); - fprintf(stderr, "\n"); + errorf(HERE, "unexpected token '%K'", &token); eat_statement(); return create_invalid_expression(); @@ -3494,7 +3500,7 @@ static expression_t *parse_array_expression(unsigned precedence, array_access_expression_t *array_access = allocate_ast_zero(sizeof(array_access[0])); - array_access->expression.type = EXPR_ARRAY_ACCESS; + array_access->expression.kind = EXPR_ARRAY_ACCESS; type_t *type_left = left->base.datatype; type_t *type_inside = inside->base.datatype; @@ -3516,12 +3522,7 @@ static expression_t *parse_array_expression(unsigned precedence, array_access->index = left; array_access->flipped = true; } else { - parser_print_error_prefix(); - fprintf(stderr, "array access on object with non-pointer types "); - print_type_quoted(type_left); - fprintf(stderr, ", "); - print_type_quoted(type_inside); - fprintf(stderr, "\n"); + errorf(HERE, "array access on object with non-pointer types '%T', '%T'", type_left, type_inside); } } else { array_access->array_ref = left; @@ -3546,7 +3547,7 @@ static expression_t *parse_sizeof(unsigned precedence) sizeof_expression_t *sizeof_expression = allocate_ast_zero(sizeof(sizeof_expression[0])); - sizeof_expression->expression.type = EXPR_SIZEOF; + sizeof_expression->expression.kind = EXPR_SIZEOF; sizeof_expression->expression.datatype = type_size_t; if(token.type == '(' && is_declaration_specifier(look_ahead(1), true)) { @@ -3592,11 +3593,8 @@ static expression_t *parse_select_expression(unsigned precedence, type_t *type_left = type; if(is_pointer) { - if(type->type != TYPE_POINTER) { - parser_print_error_prefix(); - fprintf(stderr, "left hand side of '->' is not a pointer, but "); - print_type_quoted(orig_type); - fputc('\n', stderr); + if(type->kind != TYPE_POINTER) { + errorf(HERE, "left hand side of '->' is not a pointer, but '%T'", orig_type); return create_invalid_expression(); } pointer_type_t *pointer_type = &type->pointer; @@ -3604,13 +3602,9 @@ static expression_t *parse_select_expression(unsigned precedence, } type_left = skip_typeref(type_left); - if(type_left->type != TYPE_COMPOUND_STRUCT - && type_left->type != TYPE_COMPOUND_UNION) { - parser_print_error_prefix(); - fprintf(stderr, "request for member '%s' in something not a struct or " - "union, but ", symbol->string); - print_type_quoted(type_left); - fputc('\n', stderr); + if(type_left->kind != TYPE_COMPOUND_STRUCT + && type_left->kind != TYPE_COMPOUND_UNION) { + errorf(HERE, "request for member '%s' in something not a struct or union, but '%T'", symbol->string, type_left); return create_invalid_expression(); } @@ -3618,11 +3612,7 @@ static expression_t *parse_select_expression(unsigned precedence, declaration_t *declaration = compound_type->declaration; if(!declaration->init.is_defined) { - parser_print_error_prefix(); - fprintf(stderr, "request for member '%s' of incomplete type ", - symbol->string); - print_type_quoted(type_left); - fputc('\n', stderr); + errorf(HERE, "request for member '%s' of incomplete type '%T'", symbol->string, type_left); return create_invalid_expression(); } @@ -3633,9 +3623,7 @@ static expression_t *parse_select_expression(unsigned precedence, } } if(iter == NULL) { - parser_print_error_prefix(); - print_type_quoted(type_left); - fprintf(stderr, " has no member named '%s'\n", symbol->string); + errorf(HERE, "'%T' has no member names '%s'", type_left, symbol->string); return create_invalid_expression(); } @@ -3648,6 +3636,11 @@ static expression_t *parse_select_expression(unsigned precedence, return select; } +/** + * Parse a call expression, ie. expression '( ... )'. + * + * @param expression the function address + */ static expression_t *parse_call_expression(unsigned precedence, expression_t *expression) { @@ -3673,12 +3666,7 @@ static expression_t *parse_call_expression(unsigned precedence, } } if(function_type == NULL) { - parser_print_error_prefix(); - fputs("called object '", stderr); - print_expression(expression); - fputs("' (type ", stderr); - print_type_quoted(orig_type); - fputs(") is not a pointer to a function\n", stderr); + errorf(HERE, "called object '%E' (type '%T') is not a pointer to a function", expression, orig_type); function_type = NULL; call->expression.datatype = NULL; @@ -3721,18 +3709,12 @@ static expression_t *parse_call_expression(unsigned precedence, } /* too few parameters */ if(parameter != NULL) { - parser_print_error_prefix(); - fprintf(stderr, "too few arguments to function '"); - print_expression(expression); - fprintf(stderr, "'\n"); + errorf(HERE, "too few arguments to function '%E'", expression); } else if(argument != NULL) { /* too many parameters */ if(!function_type->variadic && !function_type->unspecified_parameters) { - parser_print_error_prefix(); - fprintf(stderr, "too many arguments to function '"); - print_expression(expression); - fprintf(stderr, "'\n"); + errorf(HERE, "too many arguments to function '%E'", expression); } else { /* do default promotion */ for( ; argument != NULL; argument = argument->next) { @@ -3751,7 +3733,11 @@ static expression_t *parse_call_expression(unsigned precedence, argument->expression = create_implicit_cast(argument->expression, type); } + + check_format(&result->call); } + } else { + check_format(&result->call); } } @@ -3764,7 +3750,7 @@ static bool same_compound_type(const type_t *type1, const type_t *type2) { if(!is_type_compound(type1)) return false; - if(type1->type != type2->type) + if(type1->kind != type2->kind) return false; const compound_type_t *compound1 = &type1->compound; @@ -3773,6 +3759,11 @@ static bool same_compound_type(const type_t *type1, const type_t *type2) return compound1->declaration == compound2->declaration; } +/** + * Parse a conditional expression, ie. 'expression ? ... : ...'. + * + * @param expression the conditional expression + */ static expression_t *parse_conditional_expression(unsigned precedence, expression_t *expression) { @@ -3839,13 +3830,17 @@ static expression_t *parse_conditional_expression(unsigned precedence, return result; } +/** + * Parse an extension expression. + */ static expression_t *parse_extension(unsigned precedence) { eat(T___extension__); /* TODO enable extensions */ - - return parse_sub_expression(precedence); + expression_t *expression = parse_sub_expression(precedence); + /* TODO disable extensions */ + return expression; } static expression_t *parse_builtin_classify_type(const unsigned precedence) @@ -3870,10 +3865,9 @@ static void semantic_incdec(unary_expression_t *expression) return; type_t *type = skip_typeref(orig_type); - if(!is_type_arithmetic(type) && type->type != TYPE_POINTER) { + if(!is_type_arithmetic(type) && type->kind != TYPE_POINTER) { /* TODO: improve error message */ - parser_print_error_prefix(); - fprintf(stderr, "operation needs an arithmetic or pointer type\n"); + errorf(HERE, "operation needs an arithmetic or pointer type"); return; } @@ -3889,8 +3883,7 @@ static void semantic_unexpr_arithmetic(unary_expression_t *expression) type_t *type = skip_typeref(orig_type); if(!is_type_arithmetic(type)) { /* TODO: improve error message */ - parser_print_error_prefix(); - fprintf(stderr, "operation needs an arithmetic type\n"); + errorf(HERE, "operation needs an arithmetic type"); return; } @@ -3905,7 +3898,7 @@ static void semantic_unexpr_scalar(unary_expression_t *expression) type_t *type = skip_typeref(orig_type); if (!is_type_scalar(type)) { - parse_error("operand of ! must be of scalar type\n"); + errorf(HERE, "operand of ! must be of scalar type"); return; } @@ -3920,7 +3913,7 @@ static void semantic_unexpr_integer(unary_expression_t *expression) type_t *type = skip_typeref(orig_type); if (!is_type_integer(type)) { - parse_error("operand of ~ must be of integer type\n"); + errorf(HERE, "operand of ~ must be of integer type"); return; } @@ -3935,10 +3928,7 @@ static void semantic_dereference(unary_expression_t *expression) type_t *type = skip_typeref(orig_type); if(!is_type_pointer(type)) { - parser_print_error_prefix(); - fputs("Unary '*' needs pointer or arrray type, but type ", stderr); - print_type_quoted(orig_type); - fputs(" given.\n", stderr); + errorf(HERE, "Unary '*' needs pointer or arrray type, but type '%T' given", orig_type); return; } @@ -3958,7 +3948,7 @@ static void semantic_take_addr(unary_expression_t *expression) if(orig_type == NULL) return; - if(value->type == EXPR_REFERENCE) { + if(value->kind == EXPR_REFERENCE) { reference_expression_t *reference = (reference_expression_t*) value; declaration_t *declaration = reference->declaration; if(declaration != NULL) { @@ -4062,6 +4052,9 @@ static type_t *semantic_arithmetic(type_t *type_left, type_t *type_right) } } +/** + * Check the semantic restrictions for a binary expression. + */ static void semantic_binexpr_arithmetic(binary_expression_t *expression) { expression_t *left = expression->left; @@ -4077,8 +4070,7 @@ static void semantic_binexpr_arithmetic(binary_expression_t *expression) if(!is_type_arithmetic(type_left) || !is_type_arithmetic(type_right)) { /* TODO: improve error message */ - parser_print_error_prefix(); - fprintf(stderr, "operation needs arithmetic types\n"); + errorf(HERE, "operation needs arithmetic types"); return; } @@ -4103,8 +4095,7 @@ static void semantic_shift_op(binary_expression_t *expression) if(!is_type_integer(type_left) || !is_type_integer(type_right)) { /* TODO: improve error message */ - parser_print_error_prefix(); - fprintf(stderr, "operation needs integer types\n"); + errorf(HERE, "operation needs integer types"); return; } @@ -4141,12 +4132,7 @@ static void semantic_add(binary_expression_t *expression) } else if(is_type_pointer(type_right) && is_type_integer(type_left)) { expression->expression.datatype = type_right; } else { - parser_print_error_prefix(); - fprintf(stderr, "invalid operands to binary + ("); - print_type_quoted(orig_type_left); - fprintf(stderr, ", "); - print_type_quoted(orig_type_right); - fprintf(stderr, ")\n"); + errorf(HERE, "invalid operands to binary + ('%T', '%T')", orig_type_left, orig_type_right); } } @@ -4174,22 +4160,12 @@ static void semantic_sub(binary_expression_t *expression) expression->expression.datatype = type_left; } else if(is_type_pointer(type_left) && is_type_pointer(type_right)) { if(!pointers_compatible(type_left, type_right)) { - parser_print_error_prefix(); - fprintf(stderr, "pointers to incompatible objects to binary - ("); - print_type_quoted(orig_type_left); - fprintf(stderr, ", "); - print_type_quoted(orig_type_right); - fprintf(stderr, ")\n"); + errorf(HERE, "pointers to incompatible objects to binary - ('%T', '%T')", orig_type_left, orig_type_right); } else { expression->expression.datatype = type_ptrdiff_t; } } else { - parser_print_error_prefix(); - fprintf(stderr, "invalid operands to binary - ("); - print_type_quoted(orig_type_left); - fprintf(stderr, ", "); - print_type_quoted(orig_type_right); - fprintf(stderr, ")\n"); + errorf(HERE, "invalid operands to binary - ('%T', '%T')", orig_type_left, orig_type_right); } } @@ -4240,15 +4216,14 @@ static void semantic_arithmetic_assign(binary_expression_t *expression) if(!is_type_arithmetic(type_left) || !is_type_arithmetic(type_right)) { /* TODO: improve error message */ - parser_print_error_prefix(); - fprintf(stderr, "operation needs arithmetic types\n"); + errorf(HERE, "operation needs arithmetic types"); return; } /* combined instructions are tricky. We can't create an implicit cast on * the left side, because we need the uncasted form for the store. * The ast2firm pass has to know that left_type must be right_type - * for the arithmeitc operation and create a cast by itself */ + * for the arithmetic operation and create a cast by itself */ type_t *arithmetic_type = semantic_arithmetic(type_left, type_right); expression->right = create_implicit_cast(right, arithmetic_type); expression->expression.datatype = type_left; @@ -4271,23 +4246,21 @@ static void semantic_arithmetic_addsubb_assign(binary_expression_t *expression) /* combined instructions are tricky. We can't create an implicit cast on * the left side, because we need the uncasted form for the store. * The ast2firm pass has to know that left_type must be right_type - * for the arithmeitc operation and create a cast by itself */ + * for the arithmetic operation and create a cast by itself */ type_t *const arithmetic_type = semantic_arithmetic(type_left, type_right); expression->right = create_implicit_cast(right, arithmetic_type); expression->expression.datatype = type_left; } else if (is_type_pointer(type_left) && is_type_integer(type_right)) { expression->expression.datatype = type_left; } else { - parser_print_error_prefix(); - fputs("Incompatible types ", stderr); - print_type_quoted(orig_type_left); - fputs(" and ", stderr); - print_type_quoted(orig_type_right); - fputs(" in assignment\n", stderr); + errorf(HERE, "incompatible types '%T' and '%T' in assignment", orig_type_left, orig_type_right); return; } } +/** + * Check the semantic restrictions of a logical expression. + */ static void semantic_logical_op(binary_expression_t *expression) { expression_t *left = expression->left; @@ -4303,21 +4276,33 @@ static void semantic_logical_op(binary_expression_t *expression) if (!is_type_scalar(type_left) || !is_type_scalar(type_right)) { /* TODO: improve error message */ - parser_print_error_prefix(); - fprintf(stderr, "operation needs scalar types\n"); + errorf(HERE, "operation needs scalar types"); return; } expression->expression.datatype = type_int; } -static bool has_const_fields(type_t *type) +/** + * Checks if a compound type has constant fields. + */ +static bool has_const_fields(const compound_type_t *type) { - (void) type; + const context_t *context = &type->declaration->context; + const declaration_t *declaration = context->declarations; + + for (; declaration != NULL; declaration = declaration->next) { + const type_t *decl_type = skip_typeref(declaration->type); + if (decl_type->base.qualifiers & TYPE_QUALIFIER_CONST) + return true; + } /* TODO */ return false; } +/** + * Check the semantic restrictions of a binary assign expression. + */ static void semantic_binexpr_assign(binary_expression_t *expression) { expression_t *left = expression->left; @@ -4331,37 +4316,19 @@ static void semantic_binexpr_assign(binary_expression_t *expression) /* must be a modifiable lvalue */ if (is_type_array(type_left)) { - parser_print_error_prefix(); - fprintf(stderr, "Cannot assign to arrays ('"); - print_expression(left); - fprintf(stderr, "')\n"); + errorf(HERE, "cannot assign to arrays ('%E')", left); return; } if(type_left->base.qualifiers & TYPE_QUALIFIER_CONST) { - parser_print_error_prefix(); - fprintf(stderr, "assignment to readonly location '"); - print_expression(left); - fprintf(stderr, "' (type "); - print_type_quoted(orig_type_left); - fprintf(stderr, ")\n"); + errorf(HERE, "assignment to readonly location '%E' (type '%T')", left, orig_type_left); return; } if(is_type_incomplete(type_left)) { - parser_print_error_prefix(); - fprintf(stderr, "left-hand side of assignment '"); - print_expression(left); - fprintf(stderr, "' has incomplete type "); - print_type_quoted(orig_type_left); - fprintf(stderr, "\n"); + errorf(HERE, "left-hand side of assignment '%E' has incomplete type '%T'", left, orig_type_left); return; } - if(is_type_compound(type_left) && has_const_fields(type_left)) { - parser_print_error_prefix(); - fprintf(stderr, "can't assign to '"); - print_expression(left); - fprintf(stderr, "' because compound type "); - print_type_quoted(orig_type_left); - fprintf(stderr, " has readonly fields\n"); + if(is_type_compound(type_left) && has_const_fields(&type_left->compound)) { + errorf(HERE, "cannot assign to '%E' because compound type '%T' has readonly fields", left, orig_type_left); return; } @@ -4478,44 +4445,55 @@ static expression_t *parse_sub_expression(unsigned precedence) left = parser->infix_parser(parser->infix_precedence, left); assert(left != NULL); - assert(left->type != EXPR_UNKNOWN); + assert(left->kind != EXPR_UNKNOWN); left->base.source_position = source_position; } return left; } +/** + * Parse an expression. + */ static expression_t *parse_expression(void) { return parse_sub_expression(1); } - - +/** + * Register a parser for a prefix-like operator with given precedence. + * + * @param parser the parser function + * @param token_type the token type of the prefix token + * @param precedence the precedence of the operator + */ static void register_expression_parser(parse_expression_function parser, int token_type, unsigned precedence) { expression_parser_function_t *entry = &expression_parsers[token_type]; if(entry->parser != NULL) { - fprintf(stderr, "for token "); - print_token_type(stderr, (token_type_t) token_type); - fprintf(stderr, "\n"); + diagnosticf("for token '%k'\n", (token_type_t)token_type); panic("trying to register multiple expression parsers for a token"); } entry->parser = parser; entry->precedence = precedence; } +/** + * Register a parser for an infix operator with given precedence. + * + * @param parser the parser function + * @param token_type the token type of the infix operator + * @param precedence the precedence of the operator + */ static void register_infix_parser(parse_expression_infix_function parser, int token_type, unsigned precedence) { expression_parser_function_t *entry = &expression_parsers[token_type]; if(entry->infix_parser != NULL) { - fprintf(stderr, "for token "); - print_token_type(stderr, (token_type_t) token_type); - fprintf(stderr, "\n"); + diagnosticf("for token '%k'\n", (token_type_t)token_type); panic("trying to register multiple infix expression parsers for a " "token"); } @@ -4523,6 +4501,9 @@ static void register_infix_parser(parse_expression_infix_function parser, entry->infix_precedence = precedence; } +/** + * Initialize the expression parsers. + */ static void init_expression_parsers(void) { memset(&expression_parsers, 0, sizeof(expression_parsers)); @@ -4591,6 +4572,9 @@ static void init_expression_parsers(void) T___builtin_classify_type, 25); } +/** + * Parse a asm statement constraints specification. + */ static asm_constraint_t *parse_asm_constraints(void) { asm_constraint_t *result = NULL; @@ -4632,6 +4616,9 @@ static asm_constraint_t *parse_asm_constraints(void) return result; } +/** + * Parse a asm statement clobber specification. + */ static asm_clobber_t *parse_asm_clobbers(void) { asm_clobber_t *result = NULL; @@ -4656,6 +4643,9 @@ static asm_clobber_t *parse_asm_clobbers(void) return result; } +/** + * Parse an asm statement. + */ static statement_t *parse_asm_statement(void) { eat(T_asm); @@ -4695,6 +4685,9 @@ end_of_asm: return statement; } +/** + * Parse a case statement. + */ static statement_t *parse_case_statement(void) { eat(T_case); @@ -4710,6 +4703,9 @@ static statement_t *parse_case_statement(void) return statement; } +/** + * Parse a default statement. + */ static statement_t *parse_default_statement(void) { eat(T_default); @@ -4724,6 +4720,9 @@ static statement_t *parse_default_statement(void) return statement; } +/** + * Return the declaration for a given label symbol or create a new one. + */ static declaration_t *get_label(symbol_t *symbol) { declaration_t *candidate = get_declaration(symbol, NAMESPACE_LABEL); @@ -4745,6 +4744,9 @@ static declaration_t *get_label(symbol_t *symbol) return declaration; } +/** + * Parse a label statement. + */ static statement_t *parse_label_statement(void) { assert(token.type == T_IDENTIFIER); @@ -4756,25 +4758,23 @@ static statement_t *parse_label_statement(void) /* if source position is already set then the label is defined twice, * otherwise it was just mentioned in a goto so far */ if(label->source_position.input_name != NULL) { - parser_print_error_prefix(); - fprintf(stderr, "duplicate label '%s'\n", symbol->string); - parser_print_error_prefix_pos(label->source_position); - fprintf(stderr, "previous definition of '%s' was here\n", - symbol->string); + errorf(HERE, "duplicate label '%s'\n", symbol->string); + errorf(label->source_position, "previous definition of '%s' was here\n", symbol->string); } else { label->source_position = token.source_position; } label_statement_t *label_statement = allocate_ast_zero(sizeof(label[0])); - label_statement->statement.type = STATEMENT_LABEL; + label_statement->statement.kind = STATEMENT_LABEL; label_statement->statement.source_position = token.source_position; label_statement->label = label; expect(':'); if(token.type == '}') { - parse_error("label at end of compound statement"); + /* TODO only warn? */ + errorf(HERE, "label at end of compound statement"); return (statement_t*) label_statement; } else { label_statement->label_statement = parse_statement(); @@ -4783,12 +4783,15 @@ static statement_t *parse_label_statement(void) return (statement_t*) label_statement; } +/** + * Parse an if statement. + */ static statement_t *parse_if(void) { eat(T_if); if_statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->statement.type = STATEMENT_IF; + statement->statement.kind = STATEMENT_IF; statement->statement.source_position = token.source_position; expect('('); @@ -4804,12 +4807,15 @@ static statement_t *parse_if(void) return (statement_t*) statement; } +/** + * Parse a switch statement. + */ static statement_t *parse_switch(void) { eat(T_switch); switch_statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->statement.type = STATEMENT_SWITCH; + statement->statement.kind = STATEMENT_SWITCH; statement->statement.source_position = token.source_position; expect('('); @@ -4820,12 +4826,15 @@ static statement_t *parse_switch(void) return (statement_t*) statement; } +/** + * Parse a while statement. + */ static statement_t *parse_while(void) { eat(T_while); while_statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->statement.type = STATEMENT_WHILE; + statement->statement.kind = STATEMENT_WHILE; statement->statement.source_position = token.source_position; expect('('); @@ -4836,12 +4845,15 @@ static statement_t *parse_while(void) return (statement_t*) statement; } +/** + * Parse a do statement. + */ static statement_t *parse_do(void) { eat(T_do); do_while_statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->statement.type = STATEMENT_DO_WHILE; + statement->statement.kind = STATEMENT_DO_WHILE; statement->statement.source_position = token.source_position; statement->body = parse_statement(); @@ -4854,12 +4866,15 @@ static statement_t *parse_do(void) return (statement_t*) statement; } +/** + * Parse a for statement. + */ static statement_t *parse_for(void) { eat(T_for); for_statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->statement.type = STATEMENT_FOR; + statement->statement.kind = STATEMENT_FOR; statement->statement.source_position = token.source_position; expect('('); @@ -4896,6 +4911,9 @@ static statement_t *parse_for(void) return (statement_t*) statement; } +/** + * Parse a goto statement. + */ static statement_t *parse_goto(void) { eat(T_goto); @@ -4912,7 +4930,7 @@ static statement_t *parse_goto(void) goto_statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->statement.type = STATEMENT_GOTO; + statement->statement.kind = STATEMENT_GOTO; statement->statement.source_position = token.source_position; statement->label = label; @@ -4922,37 +4940,46 @@ static statement_t *parse_goto(void) return (statement_t*) statement; } +/** + * Parse a continue statement. + */ static statement_t *parse_continue(void) { eat(T_continue); expect(';'); statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->type = STATEMENT_CONTINUE; + statement->kind = STATEMENT_CONTINUE; statement->base.source_position = token.source_position; return statement; } +/** + * Parse a break statement. + */ static statement_t *parse_break(void) { eat(T_break); expect(';'); statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->type = STATEMENT_BREAK; + statement->kind = STATEMENT_BREAK; statement->base.source_position = token.source_position; return statement; } +/** + * Parse a return statement. + */ static statement_t *parse_return(void) { eat(T_return); return_statement_t *statement = allocate_ast_zero(sizeof(statement[0])); - statement->statement.type = STATEMENT_RETURN; + statement->statement.kind = STATEMENT_RETURN; statement->statement.source_position = token.source_position; assert(is_type_function(current_function->type)); @@ -4977,7 +5004,7 @@ static statement_t *parse_return(void) if(is_type_atomic(return_type, ATOMIC_TYPE_VOID) && !is_type_atomic(return_value_type, ATOMIC_TYPE_VOID)) { - parse_warning("'return' with a value, in function returning void"); + warningf(HERE, "'return' with a value, in function returning void"); return_value = NULL; } else { if(return_type != NULL) { @@ -4986,8 +5013,7 @@ static statement_t *parse_return(void) } } else { if(!is_type_atomic(return_type, ATOMIC_TYPE_VOID)) { - parse_warning("'return' without value, in function returning " - "non-void"); + warningf(HERE, "'return' without value, in function returning non-void"); } } statement->return_value = return_value; @@ -4995,6 +5021,9 @@ static statement_t *parse_return(void) return (statement_t*) statement; } +/** + * Parse a declaration statement. + */ static statement_t *parse_declaration_statement(void) { statement_t *statement = allocate_statement_zero(STATEMENT_DECLARATION); @@ -5014,6 +5043,9 @@ static statement_t *parse_declaration_statement(void) return statement; } +/** + * Parse an expression statement, ie. expr ';'. + */ static statement_t *parse_expression_statement(void) { statement_t *statement = allocate_statement_zero(STATEMENT_EXPRESSION); @@ -5026,6 +5058,9 @@ static statement_t *parse_expression_statement(void) return statement; } +/** + * Parse a statement. + */ static statement_t *parse_statement(void) { statement_t *statement = NULL; @@ -5127,11 +5162,14 @@ static statement_t *parse_statement(void) return statement; } +/** + * Parse a compound statement. + */ static statement_t *parse_compound_statement(void) { compound_statement_t *compound_statement = allocate_ast_zero(sizeof(compound_statement[0])); - compound_statement->statement.type = STATEMENT_COMPOUND; + compound_statement->statement.kind = STATEMENT_COMPOUND; compound_statement->statement.source_position = token.source_position; eat('{'); @@ -5159,12 +5197,11 @@ static statement_t *parse_compound_statement(void) last_statement = statement; } - if(token.type != '}') { - parser_print_error_prefix_pos( - compound_statement->statement.source_position); - fprintf(stderr, "end of file while looking for closing '}'\n"); + if(token.type == '}') { + next_token(); + } else { + errorf(compound_statement->statement.source_position, "end of file while looking for closing '}'"); } - next_token(); assert(context == &compound_statement->context); set_context(last_context); @@ -5173,16 +5210,29 @@ static statement_t *parse_compound_statement(void) return (statement_t*) compound_statement; } -static void initialize_builtins(void) +/** + * Initialize builtin types. + */ +static void initialize_builtin_types(void) { - type_wchar_t = make_global_typedef("__WCHAR_TYPE__", type_int); - type_wchar_t_ptr = make_pointer_type(type_wchar_t, TYPE_QUALIFIER_NONE); - type_size_t = make_global_typedef("__SIZE_TYPE__", - make_atomic_type(ATOMIC_TYPE_ULONG, TYPE_QUALIFIER_NONE)); - type_ptrdiff_t = make_global_typedef("__PTRDIFF_TYPE__", - make_atomic_type(ATOMIC_TYPE_LONG, TYPE_QUALIFIER_NONE)); + type_intmax_t = make_global_typedef("__intmax_t__", type_long_long); + type_size_t = make_global_typedef("__SIZE_TYPE__", type_unsigned_long); + type_ssize_t = make_global_typedef("__SSIZE_TYPE__", type_long); + type_ptrdiff_t = make_global_typedef("__PTRDIFF_TYPE__", type_long); + type_uintmax_t = make_global_typedef("__uintmax_t__", type_unsigned_long_long); + type_uptrdiff_t = make_global_typedef("__UPTRDIFF_TYPE__", type_unsigned_long); + type_wchar_t = make_global_typedef("__WCHAR_TYPE__", type_int); + type_wint_t = make_global_typedef("__WINT_TYPE__", type_int); + + type_intmax_t_ptr = make_pointer_type(type_intmax_t, TYPE_QUALIFIER_NONE); + type_ptrdiff_t_ptr = make_pointer_type(type_ptrdiff_t, TYPE_QUALIFIER_NONE); + type_ssize_t_ptr = make_pointer_type(type_ssize_t, TYPE_QUALIFIER_NONE); + type_wchar_t_ptr = make_pointer_type(type_wchar_t, TYPE_QUALIFIER_NONE); } +/** + * Parse a translation unit. + */ static translation_unit_t *parse_translation_unit(void) { translation_unit_t *unit = allocate_ast_zero(sizeof(unit[0])); @@ -5193,7 +5243,7 @@ static translation_unit_t *parse_translation_unit(void) assert(context == NULL); set_context(&unit->context); - initialize_builtins(); + initialize_builtin_types(); while(token.type != T_EOF) { parse_external_declaration(); @@ -5209,11 +5259,18 @@ static translation_unit_t *parse_translation_unit(void) return unit; } +/** + * Parse the input. + * + * @return the translation unit or NULL if errors occurred. + */ translation_unit_t *parse(void) { environment_stack = NEW_ARR_F(stack_entry_t, 0); label_stack = NEW_ARR_F(stack_entry_t, 0); - found_error = false; + diagnostic_count = 0; + error_count = 0; + warning_count = 0; type_set_output(stderr); ast_set_output(stderr); @@ -5227,32 +5284,27 @@ translation_unit_t *parse(void) DEL_ARR_F(environment_stack); DEL_ARR_F(label_stack); - if(found_error) + if(error_count > 0) return NULL; return unit; } +/** + * Initialize the parser. + */ void init_parser(void) { init_expression_parsers(); obstack_init(&temp_obst); - type_int = make_atomic_type(ATOMIC_TYPE_INT, TYPE_QUALIFIER_NONE); - type_long_double = make_atomic_type(ATOMIC_TYPE_LONG_DOUBLE, - TYPE_QUALIFIER_NONE); - type_double = make_atomic_type(ATOMIC_TYPE_DOUBLE, - TYPE_QUALIFIER_NONE); - type_float = make_atomic_type(ATOMIC_TYPE_FLOAT, TYPE_QUALIFIER_NONE); - type_char = make_atomic_type(ATOMIC_TYPE_CHAR, TYPE_QUALIFIER_NONE); - type_void = make_atomic_type(ATOMIC_TYPE_VOID, TYPE_QUALIFIER_NONE); - type_void_ptr = make_pointer_type(type_void, TYPE_QUALIFIER_NONE); - type_string = make_pointer_type(type_char, TYPE_QUALIFIER_NONE); - symbol_t *const va_list_sym = symbol_table_insert("__builtin_va_list"); type_valist = create_builtin_type(va_list_sym, type_void_ptr); } +/** + * Terminate the parser. + */ void exit_parser(void) { obstack_free(&temp_obst, NULL);