static declaration_t *last_declaration = NULL;
static declaration_t *current_function = NULL;
static struct obstack temp_obst;
-static bool found_error;
+
+#define HERE token.source_position
static type_t *type_valist;
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);
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),
[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),
[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),
[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),
[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];
#endif
}
+/**
+ * Return the next token with a given lookahead.
+ */
static inline const token_t *look_ahead(int num)
{
assert(num > 0 && num <= MAX_LOOKAHEAD);
#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_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(void)
-{
- parser_print_warning_prefix_pos(token.source_position);
-}
-
-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);
+ errorf(HERE, "%s", 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);
- }
- 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 == '{')
eat('}');
}
+/**
+ * Eat a statement until an ';' token.
+ */
static void eat_statement(void)
{
while(token.type != ';') {
eat(';');
}
+/**
+ * Eat a parenthesed term, ie. '( ... )'.
+ */
static void eat_paren(void)
{
if(token.type == '(')
}
/**
- * 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)
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;
return NULL;
}
+/**
+ * Return the "prefix" of a given namespace.
+ */
static const char *get_namespace_prefix(namespace_t namespc)
{
switch(namespc) {
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;
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);
}
}
}
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;
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)
{
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);
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)
{
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");
}
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);
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;
}
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)
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;
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;
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();
/* 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;
(void) type;
initializer_t *const initializer =
- allocate_initializer(INITIALIZER_WIDE_STRING);
+ allocate_initializer_zero(INITIALIZER_WIDE_STRING);
initializer->wide_string.string = *string;
return initializer;
/* § 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,
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;
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);
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)
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;
}
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;
}
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);
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;
}
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;
if(token.type == '}') {
next_token();
- parse_error("empty enum not allowed");
+ errorf(HERE, "empty enum not allowed");
return;
}
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;
#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(); \
break;
default:
- parse_error("multiple storage classes in declaration specifiers");
+ errorf(HERE, "multiple storage classes in declaration specifiers");
break;
}
next_token();
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; \
} \
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 {
/* 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;
}
newtype = 1;
} else {
if(type_specifiers != 0) {
- parse_error("multiple datatypes in declaration");
+ errorf(HERE, "multiple datatypes in 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;
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;
}
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);
}
}
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;
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,
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;
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;
}
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;
}
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;
}
break;
default:
- parse_warning_pos(declaration->source_position,
- "empty declaration");
+ warningf(declaration->source_position, "empty declaration");
break;
}
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 == '=') {
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
/* 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;
}
parse_struct_declarators(&specifiers);
}
if(token.type == T_EOF) {
- parse_error("EOF while parsing struct");
+ errorf(HERE, "EOF while parsing struct");
}
next_token();
}
/* 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);
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);
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);
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);
return cnst;
}
+/**
+ * Parse an integer constant.
+ */
static expression_t *parse_int_const(void)
{
expression_t *cnst = allocate_expression_zero(EXPR_CONST);
return cnst;
}
+/**
+ * Parse a float constant.
+ */
static expression_t *parse_float_const(void)
{
expression_t *cnst = allocate_expression_zero(EXPR_CONST);
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
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) {
}
/**
- * 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)
{
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;
#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;
}
}
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 */
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
switch(token.type) {
case '{':
- /* gcc extension: a stement expression */
+ /* gcc extension: a statement expression */
return parse_statement_expression();
TYPE_QUALIFIERS
/* 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;
/* 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;
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) {
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();
}
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;
= allocate_expression_zero(EXPR_UNARY_ASSUME);
expect('(');
- expression->unary.value = parse_expression();
+ 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) {
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();
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();
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;
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;
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)) {
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;
}
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();
}
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();
}
}
}
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();
}
return select;
}
+/**
+ * Parse a call expression, ie. expression '( ... )'.
+ *
+ * @param expression the function address
+ */
static expression_t *parse_call_expression(unsigned precedence,
expression_t *expression)
{
}
}
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;
}
/* 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) {
{
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;
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)
{
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)
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;
}
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;
}
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;
}
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;
}
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;
}
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) {
}
}
+/**
+ * Check the semantic restrictions for a binary expression.
+ */
static void semantic_binexpr_arithmetic(binary_expression_t *expression)
{
expression_t *left = expression->left;
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;
}
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;
}
} 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);
}
}
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);
}
}
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;
/* 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;
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;
/* 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;
}
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");
}
entry->infix_precedence = precedence;
}
+/**
+ * Initialize the expression parsers.
+ */
static void init_expression_parsers(void)
{
memset(&expression_parsers, 0, sizeof(expression_parsers));
T___builtin_classify_type, 25);
}
+/**
+ * Parse a asm statement constraints specification.
+ */
static asm_constraint_t *parse_asm_constraints(void)
{
asm_constraint_t *result = NULL;
return result;
}
+/**
+ * Parse a asm statement clobber specification.
+ */
static asm_clobber_t *parse_asm_clobbers(void)
{
asm_clobber_t *result = NULL;
return result;
}
+/**
+ * Parse an asm statement.
+ */
static statement_t *parse_asm_statement(void)
{
eat(T_asm);
return statement;
}
+/**
+ * Parse a case statement.
+ */
static statement_t *parse_case_statement(void)
{
eat(T_case);
return statement;
}
+/**
+ * Parse a default statement.
+ */
static statement_t *parse_default_statement(void)
{
eat(T_default);
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);
return declaration;
}
+/**
+ * Parse a label statement.
+ */
static statement_t *parse_label_statement(void)
{
assert(token.type == T_IDENTIFIER);
/* 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();
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('(');
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('(');
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('(');
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();
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('(');
return (statement_t*) statement;
}
+/**
+ * Parse a goto statement.
+ */
static statement_t *parse_goto(void)
{
eat(T_goto);
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;
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));
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) {
}
} 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;
return (statement_t*) statement;
}
+/**
+ * Parse a declaration statement.
+ */
static statement_t *parse_declaration_statement(void)
{
statement_t *statement = allocate_statement_zero(STATEMENT_DECLARATION);
return statement;
}
+/**
+ * Parse an expression statement, ie. expr ';'.
+ */
static statement_t *parse_expression_statement(void)
{
statement_t *statement = allocate_statement_zero(STATEMENT_EXPRESSION);
return statement;
}
+/**
+ * Parse a statement.
+ */
static statement_t *parse_statement(void)
{
statement_t *statement = NULL;
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('{');
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);
return (statement_t*) compound_statement;
}
-static void initialize_builtins(void)
+/**
+ * Initialize builtin types.
+ */
+static void initialize_builtin_types(void)
{
type_intmax_t = make_global_typedef("__intmax_t__", type_long_long);
type_size_t = make_global_typedef("__SIZE_TYPE__", type_unsigned_long);
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]));
assert(context == NULL);
set_context(&unit->context);
- initialize_builtins();
+ initialize_builtin_types();
while(token.type != T_EOF) {
parse_external_declaration();
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);
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();
type_valist = create_builtin_type(va_list_sym, type_void_ptr);
}
+/**
+ * Terminate the parser.
+ */
void exit_parser(void)
{
obstack_free(&temp_obst, NULL);
projects / cparser / blobdiff