+/*
+ * This file is part of cparser.
+ * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
#include <config.h>
#include "ast_t.h"
+#include "symbol_t.h"
#include "type_t.h"
+#include "parser.h"
+#include "lang_features.h"
#include <assert.h>
#include <stdio.h>
[EXPR_UNKNOWN] = PREC_PRIM,
[EXPR_INVALID] = PREC_PRIM,
[EXPR_REFERENCE] = PREC_PRIM,
+ [EXPR_CHARACTER_CONSTANT] = PREC_PRIM,
+ [EXPR_WIDE_CHARACTER_CONSTANT] = PREC_PRIM,
[EXPR_CONST] = PREC_PRIM,
[EXPR_STRING_LITERAL] = PREC_PRIM,
[EXPR_WIDE_STRING_LITERAL] = PREC_PRIM,
+ [EXPR_COMPOUND_LITERAL] = PREC_UNARY,
[EXPR_CALL] = PREC_PRIM,
[EXPR_CONDITIONAL] = PREC_COND,
[EXPR_SELECT] = PREC_ACCESS,
[EXPR_CLASSIFY_TYPE] = PREC_UNARY,
[EXPR_ALIGNOF] = PREC_UNARY,
- [EXPR_FUNCTION] = PREC_PRIM,
- [EXPR_PRETTY_FUNCTION] = PREC_PRIM,
+ [EXPR_FUNCNAME] = PREC_PRIM,
[EXPR_BUILTIN_SYMBOL] = PREC_PRIM,
[EXPR_BUILTIN_CONSTANT_P] = PREC_PRIM,
[EXPR_BUILTIN_PREFETCH] = PREC_PRIM,
[EXPR_BINARY_ISLESSGREATER] = PREC_PRIM,
[EXPR_BINARY_ISUNORDERED] = PREC_PRIM
};
-#ifndef NDEBUG
- if ((unsigned)kind >= (sizeof(prec)/sizeof(prec[0]))) {
- panic("wrong expression kind");
- }
+ assert((unsigned)kind < (sizeof(prec)/sizeof(prec[0])));
unsigned res = prec[kind];
- if (res == PREC_BOTTOM) {
- panic("expression kind not defined in get_expression_precedence()");
- }
-#endif
+
+ assert(res != PREC_BOTTOM);
return res;
}
if(cnst->base.type == NULL)
return;
- if(is_type_integer(cnst->base.type)) {
+ const type_t *const type = skip_typeref(cnst->base.type);
+
+ if (is_type_integer(type)) {
fprintf(out, "%lld", cnst->v.int_value);
- } else if(is_type_float(cnst->base.type)) {
+ } else if (is_type_float(type)) {
fprintf(out, "%Lf", cnst->v.float_value);
+ } else {
+ panic("unknown constant");
}
}
* Print a quoted string constant.
*
* @param string the string constant
+ * @param border the border char
*/
-static void print_quoted_string(const string_t *const string)
+static void print_quoted_string(const string_t *const string, char border)
{
- fputc('"', out);
- const char *end = string->begin + string->size;
+ fputc(border, out);
+ const char *end = string->begin + string->size - 1;
for (const char *c = string->begin; c != end; ++c) {
+ if (*c == border) {
+ fputc('\\', out);
+ }
switch(*c) {
- case '\"': fputs("\\\"", out); break;
case '\\': fputs("\\\\", out); break;
case '\a': fputs("\\a", out); break;
case '\b': fputs("\\b", out); break;
break;
}
}
- fputc('"', out);
-}
-
-/**
- * Prints a string literal expression.
- *
- * @param string_literal the string literal expression
- */
-static void print_string_literal(
- const string_literal_expression_t *string_literal)
-{
- print_quoted_string(&string_literal->value);
+ fputc(border, out);
}
/**
*
* @param wstr the wide string literal expression
*/
-static void print_wide_string_literal(
- const wide_string_literal_expression_t *const wstr)
+static void print_quoted_wide_string(const wide_string_t *const wstr,
+ char border)
{
- fputs("L\"", out);
- for (const wchar_rep_t *c = wstr->value.begin,
- *end = c + wstr->value.size;
+ fputc('L', out);
+ fputc(border, out);
+ for (const wchar_rep_t *c = wstr->begin, *end = wstr->begin + wstr->size-1;
c != end; ++c) {
switch (*c) {
case L'\"': fputs("\\\"", out); break;
}
}
}
+ fputc(border, out);
+}
+
+/**
+ * Print a constant character expression.
+ *
+ * @param cnst the constant character expression
+ */
+static void print_character_constant(const const_expression_t *cnst)
+{
+ print_quoted_string(&cnst->v.character, '\'');
+}
+
+static void print_wide_character_constant(const const_expression_t *cnst)
+{
+ print_quoted_wide_string(&cnst->v.wide_character, '\'');
+}
+
+/**
+ * Prints a string literal expression.
+ *
+ * @param string_literal the string literal expression
+ */
+static void print_string_literal(
+ const string_literal_expression_t *string_literal)
+{
+ print_quoted_string(&string_literal->value, '"');
+}
+
+/**
+ * Prints a predefined symbol.
+ */
+static void print_funcname(
+ const funcname_expression_t *funcname)
+{
+ const char *s = "";
+ switch(funcname->kind) {
+ case FUNCNAME_FUNCTION: s = (c_mode & _C99) ? "__func__" : "__FUNCTION__"; break;
+ case FUNCNAME_PRETTY_FUNCTION: s = "__PRETTY_FUNCTION__"; break;
+ case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break;
+ case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break;
+ }
+ fputc('"', out);
+ fputs(s, out);
fputc('"', out);
}
+static void print_wide_string_literal(
+ const wide_string_literal_expression_t *const wstr)
+{
+ print_quoted_wide_string(&wstr->value, '"');
+}
+
+static void print_compound_literal(
+ const compound_literal_expression_t *expression)
+{
+ fputc('(', out);
+ print_type(expression->type);
+ fputs(") ", out);
+ print_initializer(expression->initializer);
+}
+
/**
* Prints a call expression.
*
{
unsigned prec = get_expression_precedence(expression->base.kind);
print_expression_prec(expression->compound, prec);
- if(expression->compound->base.type == NULL ||
- expression->compound->base.type->kind == TYPE_POINTER) {
+ if(is_type_pointer(expression->compound->base.type)) {
fputs("->", out);
} else {
fputc('.', out);
*/
static void print_designator(const designator_t *designator)
{
- fputs(designator->symbol->string, out);
- for (designator = designator->next; designator != NULL; designator = designator->next) {
- if (designator->array_access) {
+ for ( ; designator != NULL; designator = designator->next) {
+ if (designator->symbol == NULL) {
fputc('[', out);
- print_expression_prec(designator->array_access, PREC_ACCESS);
+ print_expression_prec(designator->array_index, PREC_ACCESS);
fputc(']', out);
} else {
fputc('.', out);
switch(expression->kind) {
case EXPR_UNKNOWN:
case EXPR_INVALID:
- fprintf(out, "*invalid expression*");
+ fprintf(out, "$invalid expression$");
+ break;
+ case EXPR_CHARACTER_CONSTANT:
+ print_character_constant(&expression->conste);
+ break;
+ case EXPR_WIDE_CHARACTER_CONSTANT:
+ print_wide_character_constant(&expression->conste);
break;
case EXPR_CONST:
print_const(&expression->conste);
break;
- case EXPR_FUNCTION:
- case EXPR_PRETTY_FUNCTION:
+ case EXPR_FUNCNAME:
+ print_funcname(&expression->funcname);
+ break;
case EXPR_STRING_LITERAL:
print_string_literal(&expression->string);
break;
case EXPR_WIDE_STRING_LITERAL:
print_wide_string_literal(&expression->wide_string);
break;
+ case EXPR_COMPOUND_LITERAL:
+ print_compound_literal(&expression->compound_literal);
+ break;
case EXPR_CALL:
print_call_expression(&expression->call);
break;
{
fprintf(stderr, "(%p)", (void*) statement->label);
fprintf(out, "%s:\n", statement->label->symbol->string);
- if(statement->statement != NULL) {
- print_statement(statement->statement);
- }
+ print_statement(statement->statement);
}
/**
*/
static void print_if_statement(const if_statement_t *statement)
{
- fputs("if(", out);
+ fputs("if (", out);
print_expression(statement->condition);
fputs(") ", out);
- if(statement->true_statement != NULL) {
- print_statement(statement->true_statement);
- }
+ print_statement(statement->true_statement);
if(statement->false_statement != NULL) {
print_indent();
*/
static void print_switch_statement(const switch_statement_t *statement)
{
- fputs("switch(", out);
+ fputs("switch (", out);
print_expression(statement->expression);
fputs(") ", out);
print_statement(statement->body);
} else {
fputs("case ", out);
print_expression(statement->expression);
+ if (statement->end_range != NULL) {
+ fputs(" ... ", out);
+ print_expression(statement->end_range);
+ }
fputs(":\n", out);
}
++indent;
declaration_t *declaration = statement->declarations_begin;
for( ; declaration != statement->declarations_end->next;
declaration = declaration->next) {
+ if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
+ continue;
+
if(!first) {
print_indent();
} else {
*/
static void print_while_statement(const while_statement_t *statement)
{
- fputs("while(", out);
+ fputs("while (", out);
print_expression(statement->condition);
fputs(") ", out);
print_statement(statement->body);
fputs("do ", out);
print_statement(statement->body);
print_indent();
- fputs("while(", out);
+ fputs("while (", out);
print_expression(statement->condition);
fputs(");\n", out);
}
*/
static void print_for_statement(const for_statement_t *statement)
{
- fputs("for(", out);
+ fputs("for (", out);
if(statement->scope.declarations != NULL) {
assert(statement->initialisation == NULL);
print_declaration(statement->scope.declarations);
if(constraint->symbol) {
fprintf(out, "[%s] ", constraint->symbol->string);
}
- print_quoted_string(&constraint->constraints);
+ print_quoted_string(&constraint->constraints, '"');
fputs(" (", out);
print_expression(constraint->expression);
fputs(")", out);
if(clobber != clobbers)
fputs(", ", out);
- print_quoted_string(&clobber->clobber);
+ print_quoted_string(&clobber->clobber, '"');
}
}
fputs("volatile ", out);
}
fputs("(", out);
- print_quoted_string(&statement->asm_text);
+ print_quoted_string(&statement->asm_text, '"');
if(statement->inputs == NULL && statement->outputs == NULL
&& statement->clobbers == NULL)
goto end_of_print_asm_statement;
void print_statement(const statement_t *statement)
{
switch(statement->kind) {
+ case STATEMENT_EMPTY:
+ fputs(";\n", out);
+ break;
case STATEMENT_COMPOUND:
print_compound_statement(&statement->compound);
break;
print_asm_statement(&statement->asms);
break;
case STATEMENT_INVALID:
- fprintf(out, "*invalid statement*");
+ fprintf(out, "$invalid statement$");
break;
}
}
*
* @param storage_class the storage class
*/
-static void print_storage_class(unsigned storage_class)
+static void print_storage_class(storage_class_tag_t storage_class)
{
- switch((storage_class_tag_t) storage_class) {
+ switch(storage_class) {
case STORAGE_CLASS_ENUM_ENTRY:
case STORAGE_CLASS_NONE:
break;
*/
void print_initializer(const initializer_t *initializer)
{
- if(initializer->kind == INITIALIZER_VALUE) {
+ if(initializer == NULL) {
+ fputs("{}", out);
+ return;
+ }
+
+ switch(initializer->kind) {
+ case INITIALIZER_VALUE: {
const initializer_value_t *value = &initializer->value;
print_expression(value->value);
return;
}
+ case INITIALIZER_LIST: {
+ assert(initializer->kind == INITIALIZER_LIST);
+ fputs("{ ", out);
+ const initializer_list_t *list = &initializer->list;
+
+ for(size_t i = 0 ; i < list->len; ++i) {
+ const initializer_t *sub_init = list->initializers[i];
+ print_initializer(list->initializers[i]);
+ if(i < list->len-1) {
+ if(sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR)
+ fputs(", ", out);
+ }
+ }
+ fputs(" }", out);
+ return;
+ }
+ case INITIALIZER_STRING:
+ print_quoted_string(&initializer->string.string, '"');
+ return;
+ case INITIALIZER_WIDE_STRING:
+ print_quoted_wide_string(&initializer->wide_string.string, '"');
+ return;
+ case INITIALIZER_DESIGNATOR:
+ print_designator(initializer->designator.designator);
+ fputs(" = ", out);
+ return;
+ }
- assert(initializer->kind == INITIALIZER_LIST);
- fputs("{ ", out);
- const initializer_list_t *list = &initializer->list;
+ panic("invalid initializer kind found");
+}
- for(size_t i = 0 ; i < list->len; ++i) {
- if(i > 0) {
- fputs(", ", out);
+/**
+ * Print microsoft extended declaration modifiers.
+ */
+static void print_ms_modifiers(const declaration_t *declaration) {
+ if((c_mode & _MS) == 0)
+ return;
+
+ decl_modifiers_t modifiers = declaration->modifiers;
+
+ /* DM_FORCEINLINE handled outside. */
+ if((modifiers & ~DM_FORCEINLINE) != 0 ||
+ declaration->alignment != 0 || declaration->deprecated != 0 ||
+ declaration->get_property_sym != NULL || declaration->put_property_sym != NULL) {
+ char *next = "(";
+
+ fputs("__declspec", out);
+ if(modifiers & DM_DLLIMPORT) {
+ fputs(next, out); next = ", "; fputs("dllimport", out);
+ }
+ if(modifiers & DM_DLLEXPORT) {
+ fputs(next, out); next = ", "; fputs("dllexport", out);
}
- print_initializer(list->initializers[i]);
+ if(modifiers & DM_THREAD) {
+ fputs(next, out); next = ", "; fputs("thread", out);
+ }
+ if(modifiers & DM_NAKED) {
+ fputs(next, out); next = ", "; fputs("naked", out);
+ }
+ if(modifiers & DM_THREAD) {
+ fputs(next, out); next = ", "; fputs("thread", out);
+ }
+ if(modifiers & DM_SELECTANY) {
+ fputs(next, out); next = ", "; fputs("selectany", out);
+ }
+ if(modifiers & DM_NOTHROW) {
+ fputs(next, out); next = ", "; fputs("nothrow", out);
+ }
+ if(modifiers & DM_NORETURN) {
+ fputs(next, out); next = ", "; fputs("noreturn", out);
+ }
+ if(modifiers & DM_NOINLINE) {
+ fputs(next, out); next = ", "; fputs("noinline", out);
+ }
+ if(declaration->deprecated != 0) {
+ fputs(next, out); next = ", "; fputs("deprecated", out);
+ if(declaration->deprecated_string != NULL)
+ fprintf(out, "(\"%s\")", declaration->deprecated_string);
+ }
+ if(declaration->alignment != 0) {
+ fputs(next, out); next = ", "; fprintf(out, "align(%u)", declaration->alignment);
+ }
+ if(modifiers & DM_RESTRICT) {
+ fputs(next, out); next = ", "; fputs("restrict", out);
+ }
+ if(modifiers & DM_NOALIAS) {
+ fputs(next, out); next = ", "; fputs("noalias", out);
+ }
+ if(declaration->get_property_sym != NULL || declaration->put_property_sym != NULL) {
+ char *comma = "";
+ fputs(next, out); next = ", "; fprintf(out, "property(");
+ if(declaration->get_property_sym != NULL) {
+ fprintf(out, "get=%s", declaration->get_property_sym->string);
+ comma = ", ";
+ }
+ if(declaration->put_property_sym != NULL)
+ fprintf(out, "%sput=%s", comma, declaration->put_property_sym->string);
+ fputc(')', out);
+ }
+ fputs(") ", out);
}
- fputs("}", out);
}
/**
*/
static void print_normal_declaration(const declaration_t *declaration)
{
- print_storage_class(declaration->storage_class);
+ print_storage_class((storage_class_tag_t) declaration->declared_storage_class);
if(declaration->is_inline) {
- if (declaration->modifiers & DM_FORCEINLINE)
+ if(declaration->modifiers & DM_FORCEINLINE)
fputs("__forceinline ", out);
- else
- fputs("inline ", out);
+ else {
+ if(declaration->modifiers & DM_MICROSOFT_INLINE)
+ fputs("__inline ", out);
+ else
+ fputs("inline ", out);
+ }
}
+ print_ms_modifiers(declaration);
print_type_ext(declaration->type, declaration->symbol,
&declaration->scope);
}
}
-/**
- * Returns true if a given expression is a compile time
- * constant.
- *
- * @param expression the expression to check
- */
+bool is_constant_initializer(const initializer_t *initializer)
+{
+ switch(initializer->kind) {
+ case INITIALIZER_STRING:
+ case INITIALIZER_WIDE_STRING:
+ case INITIALIZER_DESIGNATOR:
+ return true;
+
+ case INITIALIZER_VALUE:
+ return is_constant_expression(initializer->value.value);
+
+ case INITIALIZER_LIST:
+ for(size_t i = 0; i < initializer->list.len; ++i) {
+ initializer_t *sub_initializer = initializer->list.initializers[i];
+ if(!is_constant_initializer(sub_initializer))
+ return false;
+ }
+ return true;
+ }
+ panic("invalid initializer kind found");
+}
+
+static bool is_object_with_constant_address(const expression_t *expression)
+{
+ switch(expression->kind) {
+ case EXPR_UNARY_DEREFERENCE:
+ return is_address_constant(expression->unary.value);
+
+ case EXPR_SELECT: {
+ if(is_type_pointer(expression->select.compound->base.type)) {
+ /* it's a -> */
+ return is_address_constant(expression->select.compound);
+ } else {
+ return is_object_with_constant_address(expression->select.compound);
+ }
+ }
+
+ case EXPR_ARRAY_ACCESS:
+ return is_constant_expression(expression->array_access.index)
+ && is_address_constant(expression->array_access.array_ref);
+
+ case EXPR_REFERENCE: {
+ declaration_t *declaration = expression->reference.declaration;
+ switch((storage_class_tag_t) declaration->storage_class) {
+ case STORAGE_CLASS_NONE:
+ case STORAGE_CLASS_EXTERN:
+ case STORAGE_CLASS_STATIC:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ default:
+ return false;
+ }
+}
+
+bool is_address_constant(const expression_t *expression)
+{
+ switch(expression->kind) {
+ case EXPR_UNARY_TAKE_ADDRESS:
+ return is_object_with_constant_address(expression->unary.value);
+
+ case EXPR_UNARY_DEREFERENCE: {
+ type_t *real_type = revert_automatic_type_conversion(expression->unary.value);
+ /* dereferencing a function is a NOP */
+ if(is_type_function(real_type)) {
+ return is_address_constant(expression->unary.value);
+ }
+ }
+
+ case EXPR_UNARY_CAST:
+ return is_type_pointer(skip_typeref(expression->base.type))
+ && (is_constant_expression(expression->unary.value)
+ || is_address_constant(expression->unary.value));
+
+ case EXPR_BINARY_ADD:
+ case EXPR_BINARY_SUB: {
+ expression_t *left = expression->binary.left;
+ expression_t *right = expression->binary.right;
+
+ if(is_type_pointer(skip_typeref(left->base.type))) {
+ return is_address_constant(left) && is_constant_expression(right);
+ } else if(is_type_pointer(skip_typeref(right->base.type))) {
+ return is_constant_expression(left) && is_address_constant(right);
+ }
+
+ return false;
+ }
+
+ case EXPR_REFERENCE: {
+ declaration_t *declaration = expression->reference.declaration;
+ type_t *type = skip_typeref(declaration->type);
+ if(is_type_function(type))
+ return true;
+ if(is_type_array(type)) {
+ return is_object_with_constant_address(expression);
+ }
+ return false;
+ }
+
+ default:
+ return false;
+ }
+}
+
bool is_constant_expression(const expression_t *expression)
{
switch(expression->kind) {
case EXPR_CONST:
+ case EXPR_CHARACTER_CONSTANT:
+ case EXPR_WIDE_CHARACTER_CONSTANT:
case EXPR_STRING_LITERAL:
case EXPR_WIDE_STRING_LITERAL:
case EXPR_SIZEOF:
case EXPR_CLASSIFY_TYPE:
- case EXPR_FUNCTION:
- case EXPR_PRETTY_FUNCTION:
+ case EXPR_FUNCNAME:
case EXPR_OFFSETOF:
case EXPR_ALIGNOF:
case EXPR_BUILTIN_CONSTANT_P:
case EXPR_UNARY_PREFIX_DECREMENT:
case EXPR_UNARY_BITFIELD_EXTRACT:
case EXPR_UNARY_ASSUME: /* has VOID type */
+ case EXPR_UNARY_TAKE_ADDRESS:
+ case EXPR_UNARY_DEREFERENCE:
case EXPR_BINARY_ASSIGN:
case EXPR_BINARY_MUL_ASSIGN:
case EXPR_BINARY_DIV_ASSIGN:
case EXPR_UNARY_PLUS:
case EXPR_UNARY_BITWISE_NEGATE:
case EXPR_UNARY_NOT:
- case EXPR_UNARY_DEREFERENCE:
- case EXPR_UNARY_TAKE_ADDRESS:
+ return is_constant_expression(expression->unary.value);
+
case EXPR_UNARY_CAST:
case EXPR_UNARY_CAST_IMPLICIT:
- return is_constant_expression(expression->unary.value);
+ return is_type_arithmetic(skip_typeref(expression->base.type))
+ && is_constant_expression(expression->unary.value);
case EXPR_BINARY_ADD:
case EXPR_BINARY_SUB:
return is_constant_expression(expression->binary.left)
&& is_constant_expression(expression->binary.right);
- case EXPR_CONDITIONAL:
- /* TODO: not correct, we only have to test expressions which are
- * evaluated, which means either the true or false part might be not
- * constant */
- return is_constant_expression(expression->conditional.condition)
- && is_constant_expression(expression->conditional.true_expression)
- && is_constant_expression(expression->conditional.false_expression);
+ case EXPR_COMPOUND_LITERAL:
+ return is_constant_initializer(expression->compound_literal.initializer);
+
+ case EXPR_CONDITIONAL: {
+ expression_t *condition = expression->conditional.condition;
+ if(!is_constant_expression(condition))
+ return false;
+
+ long val = fold_constant(condition);
+ if(val != 0)
+ return is_constant_expression(expression->conditional.true_expression);
+ else
+ return is_constant_expression(expression->conditional.false_expression);
+ }
case EXPR_ARRAY_ACCESS:
return is_constant_expression(expression->array_access.array_ref)
return false;
}
- case EXPR_UNKNOWN:
case EXPR_INVALID:
+ return true;
+
+ case EXPR_UNKNOWN:
break;
}
panic("invalid expression found (is constant expression)");
projects / cparser / blobdiff