+/*
+ * This file is part of cparser.
+ * Copyright (C) 2007-2009 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 <stdio.h>
#include <assert.h>
+
#include "type_t.h"
+#include "types.h"
+#include "entity_t.h"
+#include "symbol_t.h"
#include "type_hash.h"
#include "adt/error.h"
+#include "adt/util.h"
+#include "lang_features.h"
+#include "warning.h"
+#include "diagnostic.h"
+#include "driver/firm_cmdline.h"
+
+/** The default calling convention. */
+cc_kind_t default_calling_convention = CC_CDECL;
static struct obstack _type_obst;
-struct obstack *type_obst = &_type_obst;
static FILE *out;
-static int type_visited = 0;
+struct obstack *type_obst = &_type_obst;
+static bool print_implicit_array_size = false;
+
+static void intern_print_type_pre(const type_t *type);
+static void intern_print_type_post(const type_t *type);
-static void intern_print_type_pre(const type_t *type, bool top);
-static void intern_print_type_post(const type_t *type, bool top);
+typedef struct atomic_type_properties_t atomic_type_properties_t;
+struct atomic_type_properties_t {
+ unsigned size; /**< type size in bytes */
+ unsigned alignment; /**< type alignment in bytes */
+ unsigned flags; /**< type flags from atomic_type_flag_t */
+};
+
+/**
+ * Properties of atomic types.
+ */
+static atomic_type_properties_t atomic_type_properties[ATOMIC_TYPE_LAST+1] = {
+ //ATOMIC_TYPE_INVALID = 0,
+ [ATOMIC_TYPE_VOID] = {
+ .size = 0,
+ .alignment = 0,
+ .flags = ATOMIC_TYPE_FLAG_NONE
+ },
+ [ATOMIC_TYPE_WCHAR_T] = {
+ .size = (unsigned)-1,
+ .alignment = (unsigned)-1,
+ /* signed flag will be set when known */
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_CHAR] = {
+ .size = 1,
+ .alignment = 1,
+ /* signed flag will be set when known */
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_SCHAR] = {
+ .size = 1,
+ .alignment = 1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED,
+ },
+ [ATOMIC_TYPE_UCHAR] = {
+ .size = 1,
+ .alignment = 1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_SHORT] = {
+ .size = 2,
+ .alignment = 2,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED
+ },
+ [ATOMIC_TYPE_USHORT] = {
+ .size = 2,
+ .alignment = 2,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_INT] = {
+ .size = (unsigned) -1,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED,
+ },
+ [ATOMIC_TYPE_UINT] = {
+ .size = (unsigned) -1,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_LONG] = {
+ .size = (unsigned) -1,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED,
+ },
+ [ATOMIC_TYPE_ULONG] = {
+ .size = (unsigned) -1,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_LONGLONG] = {
+ .size = (unsigned) -1,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED,
+ },
+ [ATOMIC_TYPE_ULONGLONG] = {
+ .size = (unsigned) -1,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_BOOL] = {
+ .size = (unsigned) -1,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_INTEGER | ATOMIC_TYPE_FLAG_ARITHMETIC,
+ },
+ [ATOMIC_TYPE_FLOAT] = {
+ .size = 4,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_FLOAT | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED,
+ },
+ [ATOMIC_TYPE_DOUBLE] = {
+ .size = 8,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_FLOAT | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED,
+ },
+ [ATOMIC_TYPE_LONG_DOUBLE] = {
+ .size = 12,
+ .alignment = (unsigned) -1,
+ .flags = ATOMIC_TYPE_FLAG_FLOAT | ATOMIC_TYPE_FLAG_ARITHMETIC
+ | ATOMIC_TYPE_FLAG_SIGNED,
+ },
+ /* complex and imaginary types are set in init_types */
+};
void init_types(void)
{
obstack_init(type_obst);
+
+ atomic_type_properties_t *props = atomic_type_properties;
+
+ if (char_is_signed) {
+ props[ATOMIC_TYPE_CHAR].flags |= ATOMIC_TYPE_FLAG_SIGNED;
+ }
+
+ unsigned int_size = machine_size < 32 ? 2 : 4;
+ unsigned long_size = machine_size < 64 ? 4 : 8;
+ unsigned llong_size = machine_size < 32 ? 4 : 8;
+
+ props[ATOMIC_TYPE_INT].size = int_size;
+ props[ATOMIC_TYPE_INT].alignment = int_size;
+ props[ATOMIC_TYPE_UINT].size = int_size;
+ props[ATOMIC_TYPE_UINT].alignment = int_size;
+ props[ATOMIC_TYPE_LONG].size = long_size;
+ props[ATOMIC_TYPE_LONG].alignment = long_size;
+ props[ATOMIC_TYPE_ULONG].size = long_size;
+ props[ATOMIC_TYPE_ULONG].alignment = long_size;
+ props[ATOMIC_TYPE_LONGLONG].size = llong_size;
+ props[ATOMIC_TYPE_LONGLONG].alignment = llong_size;
+ props[ATOMIC_TYPE_ULONGLONG].size = llong_size;
+ props[ATOMIC_TYPE_ULONGLONG].alignment = llong_size;
+
+ /* TODO: backend specific, need a way to query the backend for this.
+ * The following are good settings for x86 */
+ props[ATOMIC_TYPE_FLOAT].alignment = 4;
+ props[ATOMIC_TYPE_DOUBLE].alignment = 4;
+ props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 4;
+ props[ATOMIC_TYPE_LONGLONG].alignment = 4;
+ props[ATOMIC_TYPE_ULONGLONG].alignment = 4;
+ if (firm_opt.os_support == OS_SUPPORT_MACHO) {
+ props[ATOMIC_TYPE_LONG_DOUBLE].size = 16;
+ props[ATOMIC_TYPE_LONG_DOUBLE].alignment = 16;
+ }
+
+ /* TODO: make this configurable for platforms which do not use byte sized
+ * bools. */
+ props[ATOMIC_TYPE_BOOL] = props[ATOMIC_TYPE_UCHAR];
+
+ props[ATOMIC_TYPE_WCHAR_T] = props[wchar_atomic_kind];
}
void exit_types(void)
out = stream;
}
-void inc_type_visited(void)
+void print_type_qualifiers(type_qualifiers_t qualifiers)
{
- type_visited++;
+ int first = 1;
+ if (qualifiers & TYPE_QUALIFIER_CONST) {
+ fputs(" const" + first, out);
+ first = 0;
+ }
+ if (qualifiers & TYPE_QUALIFIER_VOLATILE) {
+ fputs(" volatile" + first, out);
+ first = 0;
+ }
+ if (qualifiers & TYPE_QUALIFIER_RESTRICT) {
+ fputs(" restrict" + first, out);
+ first = 0;
+ }
}
-void print_type_qualifiers(type_qualifiers_t qualifiers)
+const char *get_atomic_kind_name(atomic_type_kind_t kind)
{
- if(qualifiers & TYPE_QUALIFIER_CONST) fputs("const ", out);
- if(qualifiers & TYPE_QUALIFIER_VOLATILE) fputs("volatile ", out);
- if(qualifiers & TYPE_QUALIFIER_RESTRICT) fputs("restrict ", out);
+ switch(kind) {
+ case ATOMIC_TYPE_INVALID: break;
+ case ATOMIC_TYPE_VOID: return "void";
+ case ATOMIC_TYPE_WCHAR_T: return "wchar_t";
+ case ATOMIC_TYPE_BOOL: return c_mode & _CXX ? "bool" : "_Bool";
+ case ATOMIC_TYPE_CHAR: return "char";
+ case ATOMIC_TYPE_SCHAR: return "signed char";
+ case ATOMIC_TYPE_UCHAR: return "unsigned char";
+ case ATOMIC_TYPE_INT: return "int";
+ case ATOMIC_TYPE_UINT: return "unsigned int";
+ case ATOMIC_TYPE_SHORT: return "short";
+ case ATOMIC_TYPE_USHORT: return "unsigned short";
+ case ATOMIC_TYPE_LONG: return "long";
+ case ATOMIC_TYPE_ULONG: return "unsigned long";
+ case ATOMIC_TYPE_LONGLONG: return "long long";
+ case ATOMIC_TYPE_ULONGLONG: return "unsigned long long";
+ case ATOMIC_TYPE_LONG_DOUBLE: return "long double";
+ case ATOMIC_TYPE_FLOAT: return "float";
+ case ATOMIC_TYPE_DOUBLE: return "double";
+ }
+ return "INVALIDATOMIC";
}
-static
-void print_atomic_type(const atomic_type_t *type)
-{
- print_type_qualifiers(type->type.qualifiers);
-
- const char *s;
- switch(type->akind) {
- case ATOMIC_TYPE_INVALID: s = "INVALIDATOMIC"; break;
- case ATOMIC_TYPE_VOID: s = "void"; break;
- case ATOMIC_TYPE_BOOL: s = "_Bool"; break;
- case ATOMIC_TYPE_CHAR: s = "char"; break;
- case ATOMIC_TYPE_SCHAR: s = "signed char"; break;
- case ATOMIC_TYPE_UCHAR: s = "unsigned char"; break;
- case ATOMIC_TYPE_INT: s = "int"; break;
- case ATOMIC_TYPE_UINT: s = "unsigned int"; break;
- case ATOMIC_TYPE_SHORT: s = "short"; break;
- case ATOMIC_TYPE_USHORT: s = "unsigned short"; break;
- case ATOMIC_TYPE_LONG: s = "long"; break;
- case ATOMIC_TYPE_ULONG: s = "unsigned long"; break;
- case ATOMIC_TYPE_LONGLONG: s = "long long"; break;
- case ATOMIC_TYPE_ULONGLONG: s = "unsigned long long"; break;
- case ATOMIC_TYPE_LONG_DOUBLE: s = "long double"; break;
- case ATOMIC_TYPE_FLOAT: s = "float"; break;
- case ATOMIC_TYPE_DOUBLE: s = "double"; break;
- default: s = "UNKNOWNATOMIC"; break;
- }
+/**
+ * Prints the name of an atomic type kinds.
+ *
+ * @param kind The type kind.
+ */
+static void print_atomic_kinds(atomic_type_kind_t kind)
+{
+ const char *s = get_atomic_kind_name(kind);
fputs(s, out);
}
-static void print_function_type_pre(const function_type_t *type, bool top)
+/**
+ * Prints the name of an atomic type.
+ *
+ * @param type The type.
+ */
+static void print_atomic_type(const atomic_type_t *type)
+{
+ print_type_qualifiers(type->base.qualifiers);
+ if (type->base.qualifiers != 0)
+ fputc(' ', out);
+ print_atomic_kinds(type->akind);
+}
+
+/**
+ * Prints the name of a complex type.
+ *
+ * @param type The type.
+ */
+static
+void print_complex_type(const complex_type_t *type)
+{
+ int empty = type->base.qualifiers == 0;
+ print_type_qualifiers(type->base.qualifiers);
+ fputs(" _Complex " + empty, out);
+ print_atomic_kinds(type->akind);
+}
+
+/**
+ * Prints the name of an imaginary type.
+ *
+ * @param type The type.
+ */
+static
+void print_imaginary_type(const imaginary_type_t *type)
+{
+ int empty = type->base.qualifiers == 0;
+ print_type_qualifiers(type->base.qualifiers);
+ fputs(" _Imaginary " + empty, out);
+ print_atomic_kinds(type->akind);
+}
+
+/**
+ * Print the first part (the prefix) of a type.
+ *
+ * @param type The type to print.
+ */
+static void print_function_type_pre(const function_type_t *type)
{
- print_type_qualifiers(type->type.qualifiers);
+ switch (type->linkage) {
+ case LINKAGE_INVALID:
+ break;
+
+ case LINKAGE_C:
+ if (c_mode & _CXX)
+ fputs("extern \"C\" ", out);
+ break;
+
+ case LINKAGE_CXX:
+ if (!(c_mode & _CXX))
+ fputs("extern \"C++\" ", out);
+ break;
+ }
- intern_print_type_pre(type->return_type, false);
+ print_type_qualifiers(type->base.qualifiers);
+ if (type->base.qualifiers != 0)
+ fputc(' ', out);
- /* don't emit braces if we're the toplevel type... */
- if(!top)
- fputc('(', out);
+ intern_print_type_pre(type->return_type);
+
+ cc_kind_t cc = type->calling_convention;
+restart:
+ switch (cc) {
+ case CC_CDECL: fputs(" __cdecl", out); break;
+ case CC_STDCALL: fputs(" __stdcall", out); break;
+ case CC_FASTCALL: fputs(" __fastcall", out); break;
+ case CC_THISCALL: fputs(" __thiscall", out); break;
+ case CC_DEFAULT:
+ if (default_calling_convention != CC_CDECL) {
+ /* show the default calling convention if its not cdecl */
+ cc = default_calling_convention;
+ goto restart;
+ }
+ break;
+ }
}
+/**
+ * Print the second part (the postfix) of a type.
+ *
+ * @param type The type to print.
+ */
static void print_function_type_post(const function_type_t *type,
- const context_t *context, bool top)
+ const scope_t *parameters)
{
- intern_print_type_post(type->return_type, false);
- /* don't emit braces if we're the toplevel type... */
- if(!top)
- fputc(')', out);
-
fputc('(', out);
-
- int first = 1;
- if(context == NULL) {
+ bool first = true;
+ if (parameters == NULL) {
function_parameter_t *parameter = type->parameters;
for( ; parameter != NULL; parameter = parameter->next) {
- if(first) {
- first = 0;
+ if (first) {
+ first = false;
} else {
fputs(", ", out);
}
print_type(parameter->type);
}
} else {
- declaration_t *parameter = context->declarations;
- for( ; parameter != NULL; parameter = parameter->next) {
- if(first) {
- first = 0;
+ entity_t *parameter = parameters->entities;
+ for (; parameter != NULL; parameter = parameter->base.next) {
+ if (parameter->kind != ENTITY_PARAMETER)
+ continue;
+
+ if (first) {
+ first = false;
} else {
fputs(", ", out);
}
- print_type_ext(parameter->type, parameter->symbol,
- ¶meter->context);
+ const type_t *const type = parameter->declaration.type;
+ if (type == NULL) {
+ fputs(parameter->base.symbol->string, out);
+ } else {
+ print_type_ext(type, parameter->base.symbol, NULL);
+ }
}
}
- if(type->variadic) {
- if(first) {
- first = 0;
+ if (type->variadic) {
+ if (first) {
+ first = false;
} else {
fputs(", ", out);
}
fputs("...", out);
}
- if(first && !type->unspecified_parameters) {
+ if (first && !type->unspecified_parameters) {
fputs("void", out);
}
fputc(')', out);
+
+ intern_print_type_post(type->return_type);
}
+/**
+ * Prints the prefix part of a pointer type.
+ *
+ * @param type The pointer type.
+ */
static void print_pointer_type_pre(const pointer_type_t *type)
{
- intern_print_type_pre(type->points_to, false);
- fputs("*", out);
- print_type_qualifiers(type->type.qualifiers);
+ type_t const *const points_to = type->points_to;
+ intern_print_type_pre(points_to);
+ if (points_to->kind == TYPE_ARRAY || points_to->kind == TYPE_FUNCTION)
+ fputs(" (", out);
+ variable_t *const variable = type->base_variable;
+ if (variable != NULL) {
+ fputs(" __based(", out);
+ fputs(variable->base.base.symbol->string, out);
+ fputs(") ", out);
+ }
+ fputc('*', out);
+ type_qualifiers_t const qual = type->base.qualifiers;
+ if (qual != 0)
+ fputc(' ', out);
+ print_type_qualifiers(qual);
}
+/**
+ * Prints the postfix part of a pointer type.
+ *
+ * @param type The pointer type.
+ */
static void print_pointer_type_post(const pointer_type_t *type)
{
- intern_print_type_post(type->points_to, false);
+ type_t const *const points_to = type->points_to;
+ if (points_to->kind == TYPE_ARRAY || points_to->kind == TYPE_FUNCTION)
+ fputc(')', out);
+ intern_print_type_post(points_to);
+}
+
+/**
+ * Prints the prefix part of a reference type.
+ *
+ * @param type The reference type.
+ */
+static void print_reference_type_pre(const reference_type_t *type)
+{
+ type_t const *const refers_to = type->refers_to;
+ intern_print_type_pre(refers_to);
+ if (refers_to->kind == TYPE_ARRAY || refers_to->kind == TYPE_FUNCTION)
+ fputs(" (", out);
+ fputc('&', out);
+}
+
+/**
+ * Prints the postfix part of a reference type.
+ *
+ * @param type The reference type.
+ */
+static void print_reference_type_post(const reference_type_t *type)
+{
+ type_t const *const refers_to = type->refers_to;
+ if (refers_to->kind == TYPE_ARRAY || refers_to->kind == TYPE_FUNCTION)
+ fputc(')', out);
+ intern_print_type_post(refers_to);
}
+/**
+ * Prints the prefix part of an array type.
+ *
+ * @param type The array type.
+ */
static void print_array_type_pre(const array_type_t *type)
{
- intern_print_type_pre(type->element_type, false);
+ intern_print_type_pre(type->element_type);
}
+/**
+ * Prints the postfix part of an array type.
+ *
+ * @param type The array type.
+ */
static void print_array_type_post(const array_type_t *type)
{
fputc('[', out);
- if(type->is_static) {
+ if (type->is_static) {
fputs("static ", out);
}
- print_type_qualifiers(type->type.qualifiers);
- if(type->size != NULL) {
- print_expression(type->size);
+ print_type_qualifiers(type->base.qualifiers);
+ if (type->base.qualifiers != 0)
+ fputc(' ', out);
+ if (type->size_expression != NULL
+ && (print_implicit_array_size || !type->has_implicit_size)) {
+ print_expression(type->size_expression);
}
fputc(']', out);
- intern_print_type_post(type->element_type, false);
+ intern_print_type_post(type->element_type);
}
+/**
+ * Prints the postfix part of a bitfield type.
+ *
+ * @param type The array type.
+ */
static void print_bitfield_type_post(const bitfield_type_t *type)
{
fputs(" : ", out);
- print_expression(type->size);
- intern_print_type_post(type->base, false);
+ print_expression(type->size_expression);
+ intern_print_type_post(type->base_type);
}
-void print_enum_definition(const declaration_t *declaration)
+/**
+ * Prints an enum definition.
+ *
+ * @param declaration The enum's type declaration.
+ */
+void print_enum_definition(const enum_t *enume)
{
fputs("{\n", out);
change_indent(1);
- declaration_t *entry = declaration->next;
- for( ; entry != NULL && entry->storage_class == STORAGE_CLASS_ENUM_ENTRY;
- entry = entry->next) {
+ entity_t *entry = enume->base.next;
+ for( ; entry != NULL && entry->kind == ENTITY_ENUM_VALUE;
+ entry = entry->base.next) {
print_indent();
- fprintf(out, "%s", entry->symbol->string);
- if(entry->init.initializer != NULL) {
- fprintf(out, " = ");
- print_expression(entry->init.enum_value);
+ fputs(entry->base.symbol->string, out);
+ if (entry->enum_value.value != NULL) {
+ fputs(" = ", out);
+
+ /* skip the implicit cast */
+ expression_t *expression = entry->enum_value.value;
+ if (expression->kind == EXPR_UNARY_CAST_IMPLICIT) {
+ expression = expression->unary.value;
+ }
+ print_expression(expression);
}
- fprintf(out, ",\n");
+ fputs(",\n", out);
}
change_indent(-1);
print_indent();
- fputs("}", out);
+ fputc('}', out);
}
+/**
+ * Prints an enum type.
+ *
+ * @param type The enum type.
+ */
static void print_type_enum(const enum_type_t *type)
{
- print_type_qualifiers(type->type.qualifiers);
- fputs("enum ", out);
+ int empty = type->base.qualifiers == 0;
+ print_type_qualifiers(type->base.qualifiers);
+ fputs(" enum " + empty, out);
- declaration_t *declaration = type->declaration;
- symbol_t *symbol = declaration->symbol;
- if(symbol != NULL) {
+ enum_t *enume = type->enume;
+ symbol_t *symbol = enume->base.symbol;
+ if (symbol != NULL) {
fputs(symbol->string, out);
} else {
- print_enum_definition(declaration);
+ print_enum_definition(enume);
}
}
-void print_compound_definition(const declaration_t *declaration)
+/**
+ * Print the compound part of a compound type.
+ */
+void print_compound_definition(const compound_t *compound)
{
fputs("{\n", out);
change_indent(1);
- declaration_t *iter = declaration->context.declarations;
- for( ; iter != NULL; iter = iter->next) {
+ entity_t *entity = compound->members.entities;
+ for( ; entity != NULL; entity = entity->base.next) {
+ if (entity->kind != ENTITY_COMPOUND_MEMBER)
+ continue;
+
print_indent();
- print_declaration(iter);
+ print_entity(entity);
fputc('\n', out);
}
change_indent(-1);
print_indent();
- fputs("}", out);
+ fputc('}', out);
+ if (compound->modifiers & DM_TRANSPARENT_UNION) {
+ fputs("__attribute__((__transparent_union__))", out);
+ }
}
+/**
+ * Prints a compound type.
+ *
+ * @param type The compound type.
+ */
static void print_compound_type(const compound_type_t *type)
{
- print_type_qualifiers(type->type.qualifiers);
+ int empty = type->base.qualifiers == 0;
+ print_type_qualifiers(type->base.qualifiers);
- if(type->type.kind == TYPE_COMPOUND_STRUCT) {
- fputs("struct ", out);
+ if (type->base.kind == TYPE_COMPOUND_STRUCT) {
+ fputs(" struct " + empty, out);
} else {
- assert(type->type.kind == TYPE_COMPOUND_UNION);
- fputs("union ", out);
+ assert(type->base.kind == TYPE_COMPOUND_UNION);
+ fputs(" union " + empty, out);
}
- declaration_t *declaration = type->declaration;
- symbol_t *symbol = declaration->symbol;
- if(symbol != NULL) {
+ compound_t *compound = type->compound;
+ symbol_t *symbol = compound->base.symbol;
+ if (symbol != NULL) {
fputs(symbol->string, out);
} else {
- print_compound_definition(declaration);
+ print_compound_definition(compound);
}
}
+/**
+ * Prints the prefix part of a typedef type.
+ *
+ * @param type The typedef type.
+ */
static void print_typedef_type_pre(const typedef_type_t *const type)
{
- print_type_qualifiers(type->type.qualifiers);
- fputs(type->declaration->symbol->string, out);
+ print_type_qualifiers(type->base.qualifiers);
+ if (type->base.qualifiers != 0)
+ fputc(' ', out);
+ fputs(type->typedefe->base.symbol->string, out);
}
+/**
+ * Prints the prefix part of a typeof type.
+ *
+ * @param type The typeof type.
+ */
static void print_typeof_type_pre(const typeof_type_t *const type)
{
fputs("typeof(", out);
- if(type->expression != NULL) {
- assert(type->typeof_type == NULL);
+ if (type->expression != NULL) {
print_expression(type->expression);
} else {
print_type(type->typeof_type);
fputc(')', out);
}
-static void intern_print_type_pre(const type_t *const type, const bool top)
+/**
+ * Prints the prefix part of a type.
+ *
+ * @param type The type.
+ */
+static void intern_print_type_pre(const type_t *const type)
{
switch(type->kind) {
case TYPE_ERROR:
fputs("<error>", out);
+ return;
case TYPE_INVALID:
fputs("<invalid>", out);
return;
case TYPE_ATOMIC:
print_atomic_type(&type->atomic);
return;
+ case TYPE_COMPLEX:
+ print_complex_type(&type->complex);
+ return;
+ case TYPE_IMAGINARY:
+ print_imaginary_type(&type->imaginary);
+ return;
case TYPE_COMPOUND_STRUCT:
case TYPE_COMPOUND_UNION:
print_compound_type(&type->compound);
fputs(type->builtin.symbol->string, out);
return;
case TYPE_FUNCTION:
- print_function_type_pre(&type->function, top);
+ print_function_type_pre(&type->function);
return;
case TYPE_POINTER:
print_pointer_type_pre(&type->pointer);
return;
+ case TYPE_REFERENCE:
+ print_reference_type_pre(&type->reference);
+ return;
case TYPE_BITFIELD:
- intern_print_type_pre(type->bitfield.base, top);
+ intern_print_type_pre(type->bitfield.base_type);
return;
case TYPE_ARRAY:
print_array_type_pre(&type->array);
fputs("unknown", out);
}
-static void intern_print_type_post(const type_t *const type, const bool top)
+/**
+ * Prints the postfix part of a type.
+ *
+ * @param type The type.
+ */
+static void intern_print_type_post(const type_t *const type)
{
switch(type->kind) {
case TYPE_FUNCTION:
- print_function_type_post(&type->function, NULL, top);
+ print_function_type_post(&type->function, NULL);
return;
case TYPE_POINTER:
print_pointer_type_post(&type->pointer);
return;
+ case TYPE_REFERENCE:
+ print_reference_type_post(&type->reference);
+ return;
case TYPE_ARRAY:
print_array_type_post(&type->array);
return;
case TYPE_ERROR:
case TYPE_INVALID:
case TYPE_ATOMIC:
+ case TYPE_COMPLEX:
+ case TYPE_IMAGINARY:
case TYPE_ENUM:
case TYPE_COMPOUND_STRUCT:
case TYPE_COMPOUND_UNION:
}
}
+/**
+ * Prints a type.
+ *
+ * @param type The type.
+ */
void print_type(const type_t *const type)
{
print_type_ext(type, NULL, NULL);
}
void print_type_ext(const type_t *const type, const symbol_t *symbol,
- const context_t *context)
+ const scope_t *parameters)
{
- if(type == NULL) {
+ if (type == NULL) {
fputs("nil type", out);
return;
}
- intern_print_type_pre(type, true);
- if(symbol != NULL) {
+ intern_print_type_pre(type);
+ if (symbol != NULL) {
fputc(' ', out);
fputs(symbol->string, out);
}
- if(type->kind == TYPE_FUNCTION) {
- print_function_type_post(&type->function, context, true);
+ if (type->kind == TYPE_FUNCTION) {
+ print_function_type_post(&type->function, parameters);
} else {
- intern_print_type_post(type, true);
+ intern_print_type_post(type);
}
}
-static size_t get_type_size(type_t *type)
+/**
+ * Return the size of a type AST node.
+ *
+ * @param type The type.
+ */
+static size_t get_type_struct_size(const type_t *type)
{
switch(type->kind) {
case TYPE_ATOMIC: return sizeof(atomic_type_t);
+ case TYPE_COMPLEX: return sizeof(complex_type_t);
+ case TYPE_IMAGINARY: return sizeof(imaginary_type_t);
case TYPE_COMPOUND_STRUCT:
case TYPE_COMPOUND_UNION: return sizeof(compound_type_t);
case TYPE_ENUM: return sizeof(enum_type_t);
case TYPE_FUNCTION: return sizeof(function_type_t);
case TYPE_POINTER: return sizeof(pointer_type_t);
+ case TYPE_REFERENCE: return sizeof(reference_type_t);
case TYPE_ARRAY: return sizeof(array_type_t);
case TYPE_BUILTIN: return sizeof(builtin_type_t);
case TYPE_TYPEDEF: return sizeof(typedef_type_t);
}
/**
- * duplicates a type
- * note that this does not produce a deep copy!
+ * Duplicates a type.
+ *
+ * @param type The type to copy.
+ * @return A copy of the type.
+ *
+ * @note This does not produce a deep copy!
*/
-type_t *duplicate_type(type_t *type)
+type_t *duplicate_type(const type_t *type)
{
- size_t size = get_type_size(type);
+ size_t size = get_type_struct_size(type);
type_t *copy = obstack_alloc(type_obst, size);
memcpy(copy, type, size);
+ copy->base.firm_type = NULL;
return copy;
}
+/**
+ * Returns the unqualified type of a given type.
+ *
+ * @param type The type.
+ * @returns The unqualified type.
+ */
type_t *get_unqualified_type(type_t *type)
{
- if(type->base.qualifiers == TYPE_QUALIFIER_NONE)
+ assert(!is_typeref(type));
+
+ if (type->base.qualifiers == TYPE_QUALIFIER_NONE)
return type;
type_t *unqualified_type = duplicate_type(type);
unqualified_type->base.qualifiers = TYPE_QUALIFIER_NONE;
- type_t *result = typehash_insert(unqualified_type);
- if(result != unqualified_type) {
- obstack_free(type_obst, unqualified_type);
+ return identify_new_type(unqualified_type);
+}
+
+type_t *get_qualified_type(type_t *orig_type, type_qualifiers_t const qual)
+{
+ type_t *type = skip_typeref(orig_type);
+
+ type_t *copy;
+ if (is_type_array(type)) {
+ /* For array types the element type has to be adjusted */
+ type_t *element_type = type->array.element_type;
+ type_t *qual_element_type = get_qualified_type(element_type, qual);
+
+ if (qual_element_type == element_type)
+ return orig_type;
+
+ copy = duplicate_type(type);
+ copy->array.element_type = qual_element_type;
+ } else if (is_type_valid(type)) {
+ if ((type->base.qualifiers & qual) == qual)
+ return orig_type;
+
+ copy = duplicate_type(type);
+ copy->base.qualifiers |= qual;
+ } else {
+ return type;
}
- return result;
+ return identify_new_type(copy);
}
+/**
+ * Check if a type is valid.
+ *
+ * @param type The type to check.
+ * @return true if type represents a valid type.
+ */
bool type_valid(const type_t *type)
{
return type->kind != TYPE_INVALID;
}
+static bool test_atomic_type_flag(atomic_type_kind_t kind,
+ atomic_type_flag_t flag)
+{
+ assert(kind <= ATOMIC_TYPE_LAST);
+ return (atomic_type_properties[kind].flags & flag) != 0;
+}
+
+/**
+ * Returns true if the given type is an integer type.
+ *
+ * @param type The type to check.
+ * @return True if type is an integer type.
+ */
bool is_type_integer(const type_t *type)
{
assert(!is_typeref(type));
- if(type->kind == TYPE_ENUM)
+ if (type->kind == TYPE_ENUM)
+ return true;
+ if (type->kind == TYPE_BITFIELD)
return true;
- if(type->kind != TYPE_ATOMIC)
+ if (type->kind != TYPE_ATOMIC)
return false;
- switch(type->atomic.akind) {
- case ATOMIC_TYPE_BOOL:
- case ATOMIC_TYPE_CHAR:
- case ATOMIC_TYPE_SCHAR:
- case ATOMIC_TYPE_UCHAR:
- case ATOMIC_TYPE_SHORT:
- case ATOMIC_TYPE_USHORT:
- case ATOMIC_TYPE_INT:
- case ATOMIC_TYPE_UINT:
- case ATOMIC_TYPE_LONG:
- case ATOMIC_TYPE_ULONG:
- case ATOMIC_TYPE_LONGLONG:
- case ATOMIC_TYPE_ULONGLONG:
- return true;
- default:
- return false;
- }
+ return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_INTEGER);
+}
+
+/**
+ * Returns true if the given type is an enum type.
+ *
+ * @param type The type to check.
+ * @return True if type is an enum type.
+ */
+bool is_type_enum(const type_t *type)
+{
+ assert(!is_typeref(type));
+ return type->kind == TYPE_ENUM;
}
-bool is_type_floating(const type_t *type)
+/**
+ * Returns true if the given type is an floating point type.
+ *
+ * @param type The type to check.
+ * @return True if type is a floating point type.
+ */
+bool is_type_float(const type_t *type)
{
assert(!is_typeref(type));
- if(type->kind != TYPE_ATOMIC)
+ if (type->kind != TYPE_ATOMIC)
return false;
- switch(type->atomic.akind) {
- case ATOMIC_TYPE_FLOAT:
- case ATOMIC_TYPE_DOUBLE:
- case ATOMIC_TYPE_LONG_DOUBLE:
-#ifdef PROVIDE_COMPLEX
- case ATOMIC_TYPE_FLOAT_COMPLEX:
- case ATOMIC_TYPE_DOUBLE_COMPLEX:
- case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
- case ATOMIC_TYPE_FLOAT_IMAGINARY:
- case ATOMIC_TYPE_DOUBLE_IMAGINARY:
- case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
-#endif
- return true;
- default:
+ return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_FLOAT);
+}
+
+/**
+ * Returns true if the given type is an complex type.
+ *
+ * @param type The type to check.
+ * @return True if type is a complex type.
+ */
+bool is_type_complex(const type_t *type)
+{
+ assert(!is_typeref(type));
+
+ if (type->kind != TYPE_ATOMIC)
return false;
- }
+
+ return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_COMPLEX);
}
+/**
+ * Returns true if the given type is a signed type.
+ *
+ * @param type The type to check.
+ * @return True if type is a signed type.
+ */
bool is_type_signed(const type_t *type)
{
assert(!is_typeref(type));
/* enum types are int for now */
- if(type->kind == TYPE_ENUM)
- return true;
-
- if(type->kind != TYPE_ATOMIC)
- return false;
-
- switch(type->atomic.akind) {
- case ATOMIC_TYPE_CHAR:
- case ATOMIC_TYPE_SCHAR:
- case ATOMIC_TYPE_SHORT:
- case ATOMIC_TYPE_INT:
- case ATOMIC_TYPE_LONG:
- case ATOMIC_TYPE_LONGLONG:
- case ATOMIC_TYPE_FLOAT:
- case ATOMIC_TYPE_DOUBLE:
- case ATOMIC_TYPE_LONG_DOUBLE:
-#ifdef PROVIDE_COMPLEX
- case ATOMIC_TYPE_FLOAT_COMPLEX:
- case ATOMIC_TYPE_DOUBLE_COMPLEX:
- case ATOMIC_TYPE_LONG_DOUBLE_COMPLEX:
- case ATOMIC_TYPE_FLOAT_IMAGINARY:
- case ATOMIC_TYPE_DOUBLE_IMAGINARY:
- case ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY:
-#endif
+ if (type->kind == TYPE_ENUM)
return true;
+ if (type->kind == TYPE_BITFIELD)
+ return is_type_signed(type->bitfield.base_type);
- case ATOMIC_TYPE_BOOL:
- case ATOMIC_TYPE_UCHAR:
- case ATOMIC_TYPE_USHORT:
- case ATOMIC_TYPE_UINT:
- case ATOMIC_TYPE_ULONG:
- case ATOMIC_TYPE_ULONGLONG:
+ if (type->kind != TYPE_ATOMIC)
return false;
- case ATOMIC_TYPE_VOID:
- case ATOMIC_TYPE_INVALID:
- case ATOMIC_TYPE_LAST:
- return false;
- }
-
- panic("invalid atomic type found");
- return false;
+ return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_SIGNED);
}
+/**
+ * Returns true if the given type represents an arithmetic type.
+ *
+ * @param type The type to check.
+ * @return True if type represents an arithmetic type.
+ */
bool is_type_arithmetic(const type_t *type)
{
assert(!is_typeref(type));
- if(type->kind == TYPE_BITFIELD)
- return true;
-
- if(is_type_integer(type) || is_type_floating(type))
+ switch(type->kind) {
+ case TYPE_BITFIELD:
+ case TYPE_ENUM:
return true;
+ case TYPE_ATOMIC:
+ return test_atomic_type_flag(type->atomic.akind, ATOMIC_TYPE_FLAG_ARITHMETIC);
+ case TYPE_COMPLEX:
+ return test_atomic_type_flag(type->complex.akind, ATOMIC_TYPE_FLAG_ARITHMETIC);
+ case TYPE_IMAGINARY:
+ return test_atomic_type_flag(type->imaginary.akind, ATOMIC_TYPE_FLAG_ARITHMETIC);
+ default:
+ return false;
+ }
+}
- return false;
+/**
+ * Returns true if the given type is an integer or float type.
+ *
+ * @param type The type to check.
+ * @return True if type is an integer or float type.
+ */
+bool is_type_real(const type_t *type)
+{
+ /* 6.2.5 (17) */
+ return is_type_integer(type) || is_type_float(type);
}
+/**
+ * Returns true if the given type represents a scalar type.
+ *
+ * @param type The type to check.
+ * @return True if type represents a scalar type.
+ */
bool is_type_scalar(const type_t *type)
{
assert(!is_typeref(type));
switch (type->kind) {
case TYPE_POINTER: return true;
case TYPE_BUILTIN: return is_type_scalar(type->builtin.real_type);
- default: break;
+ default: break;
}
return is_type_arithmetic(type);
}
+/**
+ * Check if a given type is incomplete.
+ *
+ * @param type The type to check.
+ * @return True if the given type is incomplete (ie. just forward).
+ */
bool is_type_incomplete(const type_t *type)
{
assert(!is_typeref(type));
case TYPE_COMPOUND_STRUCT:
case TYPE_COMPOUND_UNION: {
const compound_type_t *compound_type = &type->compound;
- declaration_t *declaration = compound_type->declaration;
- return !declaration->init.is_defined;
+ return !compound_type->compound->complete;
}
- case TYPE_BITFIELD:
- case TYPE_FUNCTION:
- return true;
+ case TYPE_ENUM:
+ return false;
case TYPE_ARRAY:
- return type->array.size == NULL;
+ return type->array.size_expression == NULL
+ && !type->array.size_constant;
case TYPE_ATOMIC:
return type->atomic.akind == ATOMIC_TYPE_VOID;
+ case TYPE_COMPLEX:
+ return type->complex.akind == ATOMIC_TYPE_VOID;
+
+ case TYPE_IMAGINARY:
+ return type->imaginary.akind == ATOMIC_TYPE_VOID;
+
+ case TYPE_BITFIELD:
+ case TYPE_FUNCTION:
case TYPE_POINTER:
- case TYPE_ENUM:
+ case TYPE_REFERENCE:
case TYPE_BUILTIN:
+ case TYPE_ERROR:
return false;
case TYPE_TYPEDEF:
case TYPE_TYPEOF:
panic("is_type_incomplete called without typerefs skipped");
- case TYPE_ERROR:
- panic("error type found");
case TYPE_INVALID:
break;
}
panic("invalid type found");
}
+bool is_type_object(const type_t *type)
+{
+ return !is_type_function(type) && !is_type_incomplete(type);
+}
+
+bool is_builtin_va_list(type_t *type)
+{
+ type_t *tp = skip_typeref(type);
+
+ return tp->kind == type_valist->kind &&
+ tp->builtin.symbol == type_valist->builtin.symbol;
+}
+
+/**
+ * Check if two function types are compatible.
+ */
static bool function_types_compatible(const function_type_t *func1,
const function_type_t *func2)
{
if (!types_compatible(ret1, ret2))
return false;
+ if (func1->linkage != func2->linkage)
+ return false;
+
+ cc_kind_t cc1 = func1->calling_convention;
+ if (cc1 == CC_DEFAULT)
+ cc1 = default_calling_convention;
+ cc_kind_t cc2 = func2->calling_convention;
+ if (cc2 == CC_DEFAULT)
+ cc2 = default_calling_convention;
+
+ if (cc1 != cc2)
+ return false;
+
/* can parameters be compared? */
- if(func1->unspecified_parameters || func2->unspecified_parameters)
+ if (func1->unspecified_parameters || func2->unspecified_parameters)
return true;
- if(func1->variadic != func2->variadic)
+ if (func1->variadic != func2->variadic)
return false;
/* TODO: handling of unspecified parameters not correct yet */
/* all argument types must be compatible */
function_parameter_t *parameter1 = func1->parameters;
function_parameter_t *parameter2 = func2->parameters;
- for( ; parameter1 != NULL && parameter2 != NULL;
+ for ( ; parameter1 != NULL && parameter2 != NULL;
parameter1 = parameter1->next, parameter2 = parameter2->next) {
type_t *parameter1_type = skip_typeref(parameter1->type);
type_t *parameter2_type = skip_typeref(parameter2->type);
parameter1_type = get_unqualified_type(parameter1_type);
parameter2_type = get_unqualified_type(parameter2_type);
- if(!types_compatible(parameter1_type, parameter2_type))
+ if (!types_compatible(parameter1_type, parameter2_type))
return false;
}
/* same number of arguments? */
- if(parameter1 != NULL || parameter2 != NULL)
+ if (parameter1 != NULL || parameter2 != NULL)
return false;
return true;
}
+/**
+ * Check if two array types are compatible.
+ */
static bool array_types_compatible(const array_type_t *array1,
const array_type_t *array2)
{
type_t *element_type1 = skip_typeref(array1->element_type);
type_t *element_type2 = skip_typeref(array2->element_type);
- if(!types_compatible(element_type1, element_type2))
+ if (!types_compatible(element_type1, element_type2))
return false;
- if(array1->size != NULL && array2->size != NULL) {
- /* TODO: check if size expression evaluate to the same value
- * if they are constant */
- }
+ if (!array1->size_constant || !array2->size_constant)
+ return true;
- return true;
+ return array1->size == array2->size;
}
+/**
+ * Check if two types are compatible.
+ */
bool types_compatible(const type_t *type1, const type_t *type2)
{
assert(!is_typeref(type1));
assert(!is_typeref(type2));
/* shortcut: the same type is always compatible */
- if(type1 == type2)
+ if (type1 == type2)
+ return true;
+
+ if (!is_type_valid(type1) || !is_type_valid(type2))
return true;
- if(type1->base.qualifiers != type2->base.qualifiers)
+ if (type1->base.qualifiers != type2->base.qualifiers)
return false;
- if(type1->kind != type2->kind)
+ if (type1->kind != type2->kind)
return false;
- switch(type1->kind) {
+ switch (type1->kind) {
case TYPE_FUNCTION:
return function_types_compatible(&type1->function, &type2->function);
case TYPE_ATOMIC:
return type1->atomic.akind == type2->atomic.akind;
+ case TYPE_COMPLEX:
+ return type1->complex.akind == type2->complex.akind;
+ case TYPE_IMAGINARY:
+ return type1->imaginary.akind == type2->imaginary.akind;
case TYPE_ARRAY:
return array_types_compatible(&type1->array, &type2->array);
return types_compatible(to1, to2);
}
+ case TYPE_REFERENCE: {
+ const type_t *const to1 = skip_typeref(type1->reference.refers_to);
+ const type_t *const to2 = skip_typeref(type2->reference.refers_to);
+ return types_compatible(to1, to2);
+ }
+
case TYPE_COMPOUND_STRUCT:
- case TYPE_COMPOUND_UNION:
+ case TYPE_COMPOUND_UNION: {
+
+
+ break;
+ }
case TYPE_ENUM:
case TYPE_BUILTIN:
/* TODO: not implemented */
return false;
}
-bool pointers_compatible(const type_t *type1, const type_t *type2)
-{
- assert(!is_typeref(type1));
- assert(!is_typeref(type2));
-
- assert(type1->kind == TYPE_POINTER);
- assert(type2->kind == TYPE_POINTER);
- /* TODO */
- return true;
-}
-
/**
* Skip all typerefs and return the underlying type.
*/
type_t *skip_typeref(type_t *type)
{
- unsigned qualifiers = TYPE_QUALIFIER_NONE;
+ type_qualifiers_t qualifiers = TYPE_QUALIFIER_NONE;
- while(true) {
- switch(type->kind) {
+ while (true) {
+ switch (type->kind) {
case TYPE_ERROR:
return type;
case TYPE_TYPEDEF: {
qualifiers |= type->base.qualifiers;
+
const typedef_type_t *typedef_type = &type->typedeft;
- if(typedef_type->resolved_type != NULL) {
+ if (typedef_type->resolved_type != NULL) {
type = typedef_type->resolved_type;
break;
}
- type = typedef_type->declaration->type;
+ type = typedef_type->typedefe->type;
continue;
}
- case TYPE_TYPEOF: {
- const typeof_type_t *typeof_type = &type->typeoft;
- if(typeof_type->typeof_type != NULL) {
- type = typeof_type->typeof_type;
- } else {
- type = typeof_type->expression->base.datatype;
- }
+ case TYPE_TYPEOF:
+ qualifiers |= type->base.qualifiers;
+ type = type->typeoft.typeof_type;
continue;
- }
default:
break;
}
}
if (qualifiers != TYPE_QUALIFIER_NONE) {
- type_t *const copy = duplicate_type(type);
- copy->base.qualifiers |= qualifiers;
-
- type = typehash_insert(copy);
- if (type != copy) {
- obstack_free(type_obst, copy);
+ type_t *const copy = duplicate_type(type);
+
+ /* for const with typedefed array type the element type has to be
+ * adjusted */
+ if (is_type_array(copy)) {
+ type_t *element_type = copy->array.element_type;
+ element_type = duplicate_type(element_type);
+ element_type->base.qualifiers |= qualifiers;
+ copy->array.element_type = element_type;
+ } else {
+ copy->base.qualifiers |= qualifiers;
}
+
+ type = identify_new_type(copy);
}
return type;
}
+unsigned get_type_size(type_t *type)
+{
+ switch (type->kind) {
+ case TYPE_INVALID:
+ break;
+ case TYPE_ERROR:
+ return 0;
+ case TYPE_ATOMIC:
+ return get_atomic_type_size(type->atomic.akind);
+ case TYPE_COMPLEX:
+ return get_atomic_type_size(type->complex.akind) * 2;
+ case TYPE_IMAGINARY:
+ return get_atomic_type_size(type->imaginary.akind);
+ case TYPE_COMPOUND_UNION:
+ layout_union_type(&type->compound);
+ return type->compound.compound->size;
+ case TYPE_COMPOUND_STRUCT:
+ layout_struct_type(&type->compound);
+ return type->compound.compound->size;
+ case TYPE_ENUM:
+ return get_atomic_type_size(type->enumt.akind);
+ case TYPE_FUNCTION:
+ return 0; /* non-const (but "address-const") */
+ case TYPE_REFERENCE:
+ case TYPE_POINTER:
+ /* TODO: make configurable by backend */
+ return 4;
+ case TYPE_ARRAY: {
+ /* TODO: correct if element_type is aligned? */
+ il_size_t element_size = get_type_size(type->array.element_type);
+ return type->array.size * element_size;
+ }
+ case TYPE_BITFIELD:
+ return 0;
+ case TYPE_BUILTIN:
+ return get_type_size(type->builtin.real_type);
+ case TYPE_TYPEDEF:
+ return get_type_size(type->typedeft.typedefe->type);
+ case TYPE_TYPEOF:
+ if (type->typeoft.typeof_type) {
+ return get_type_size(type->typeoft.typeof_type);
+ } else {
+ return get_type_size(type->typeoft.expression->base.type);
+ }
+ }
+ panic("invalid type in get_type_size");
+}
+
+unsigned get_type_alignment(type_t *type)
+{
+ switch (type->kind) {
+ case TYPE_INVALID:
+ break;
+ case TYPE_ERROR:
+ return 0;
+ case TYPE_ATOMIC:
+ return get_atomic_type_alignment(type->atomic.akind);
+ case TYPE_COMPLEX:
+ return get_atomic_type_alignment(type->complex.akind);
+ case TYPE_IMAGINARY:
+ return get_atomic_type_alignment(type->imaginary.akind);
+ case TYPE_COMPOUND_UNION:
+ layout_union_type(&type->compound);
+ return type->compound.compound->alignment;
+ case TYPE_COMPOUND_STRUCT:
+ layout_struct_type(&type->compound);
+ return type->compound.compound->alignment;
+ case TYPE_ENUM:
+ return get_atomic_type_alignment(type->enumt.akind);
+ case TYPE_FUNCTION:
+ /* what is correct here? */
+ return 4;
+ case TYPE_REFERENCE:
+ case TYPE_POINTER:
+ /* TODO: make configurable by backend */
+ return 4;
+ case TYPE_ARRAY:
+ return get_type_alignment(type->array.element_type);
+ case TYPE_BITFIELD:
+ return 0;
+ case TYPE_BUILTIN:
+ return get_type_alignment(type->builtin.real_type);
+ case TYPE_TYPEDEF: {
+ il_alignment_t alignment
+ = get_type_alignment(type->typedeft.typedefe->type);
+ if (type->typedeft.typedefe->alignment > alignment)
+ alignment = type->typedeft.typedefe->alignment;
+
+ return alignment;
+ }
+ case TYPE_TYPEOF:
+ if (type->typeoft.typeof_type) {
+ return get_type_alignment(type->typeoft.typeof_type);
+ } else {
+ return get_type_alignment(type->typeoft.expression->base.type);
+ }
+ }
+ panic("invalid type in get_type_alignment");
+}
+
+decl_modifiers_t get_type_modifiers(const type_t *type)
+{
+ switch(type->kind) {
+ case TYPE_INVALID:
+ case TYPE_ERROR:
+ break;
+ case TYPE_COMPOUND_STRUCT:
+ case TYPE_COMPOUND_UNION:
+ return type->compound.compound->modifiers;
+ case TYPE_FUNCTION:
+ return type->function.modifiers;
+ case TYPE_ENUM:
+ case TYPE_ATOMIC:
+ case TYPE_COMPLEX:
+ case TYPE_IMAGINARY:
+ case TYPE_REFERENCE:
+ case TYPE_POINTER:
+ case TYPE_BITFIELD:
+ case TYPE_ARRAY:
+ return 0;
+ case TYPE_BUILTIN:
+ return get_type_modifiers(type->builtin.real_type);
+ case TYPE_TYPEDEF: {
+ decl_modifiers_t modifiers = type->typedeft.typedefe->modifiers;
+ modifiers |= get_type_modifiers(type->typedeft.typedefe->type);
+ return modifiers;
+ }
+ case TYPE_TYPEOF:
+ if (type->typeoft.typeof_type) {
+ return get_type_modifiers(type->typeoft.typeof_type);
+ } else {
+ return get_type_modifiers(type->typeoft.expression->base.type);
+ }
+ }
+ panic("invalid type found in get_type_modifiers");
+}
+
+type_qualifiers_t get_type_qualifier(const type_t *type, bool skip_array_type)
+{
+ type_qualifiers_t qualifiers = TYPE_QUALIFIER_NONE;
+
+ while (true) {
+ switch (type->base.kind) {
+ case TYPE_ERROR:
+ return TYPE_QUALIFIER_NONE;
+ case TYPE_TYPEDEF:
+ qualifiers |= type->base.qualifiers;
+ const typedef_type_t *typedef_type = &type->typedeft;
+ if (typedef_type->resolved_type != NULL)
+ type = typedef_type->resolved_type;
+ else
+ type = typedef_type->typedefe->type;
+ continue;
+ case TYPE_TYPEOF:
+ type = type->typeoft.typeof_type;
+ continue;
+ case TYPE_ARRAY:
+ if (skip_array_type) {
+ type = type->array.element_type;
+ continue;
+ }
+ break;
+ default:
+ break;
+ }
+ break;
+ }
+ return type->base.qualifiers | qualifiers;
+}
+
+unsigned get_atomic_type_size(atomic_type_kind_t kind)
+{
+ assert(kind <= ATOMIC_TYPE_LAST);
+ return atomic_type_properties[kind].size;
+}
+
+unsigned get_atomic_type_alignment(atomic_type_kind_t kind)
+{
+ assert(kind <= ATOMIC_TYPE_LAST);
+ return atomic_type_properties[kind].alignment;
+}
+
+unsigned get_atomic_type_flags(atomic_type_kind_t kind)
+{
+ assert(kind <= ATOMIC_TYPE_LAST);
+ return atomic_type_properties[kind].flags;
+}
+
+atomic_type_kind_t get_intptr_kind(void)
+{
+ if (machine_size <= 32)
+ return ATOMIC_TYPE_INT;
+ else if (machine_size <= 64)
+ return ATOMIC_TYPE_LONG;
+ else
+ return ATOMIC_TYPE_LONGLONG;
+}
+
+atomic_type_kind_t get_uintptr_kind(void)
+{
+ if (machine_size <= 32)
+ return ATOMIC_TYPE_UINT;
+ else if (machine_size <= 64)
+ return ATOMIC_TYPE_ULONG;
+ else
+ return ATOMIC_TYPE_ULONGLONG;
+}
+/**
+ * Find the atomic type kind representing a given size (signed).
+ */
+atomic_type_kind_t find_signed_int_atomic_type_kind_for_size(unsigned size)
+{
+ static atomic_type_kind_t kinds[32];
+
+ assert(size < 32);
+ atomic_type_kind_t kind = kinds[size];
+ if (kind == ATOMIC_TYPE_INVALID) {
+ static const atomic_type_kind_t possible_kinds[] = {
+ ATOMIC_TYPE_SCHAR,
+ ATOMIC_TYPE_SHORT,
+ ATOMIC_TYPE_INT,
+ ATOMIC_TYPE_LONG,
+ ATOMIC_TYPE_LONGLONG
+ };
+ for (size_t i = 0; i < lengthof(possible_kinds); ++i) {
+ if (get_atomic_type_size(possible_kinds[i]) == size) {
+ kind = possible_kinds[i];
+ break;
+ }
+ }
+ kinds[size] = kind;
+ }
+ return kind;
+}
+
+/**
+ * Find the atomic type kind representing a given size (signed).
+ */
+atomic_type_kind_t find_unsigned_int_atomic_type_kind_for_size(unsigned size)
+{
+ static atomic_type_kind_t kinds[32];
+
+ assert(size < 32);
+ atomic_type_kind_t kind = kinds[size];
+ if (kind == ATOMIC_TYPE_INVALID) {
+ static const atomic_type_kind_t possible_kinds[] = {
+ ATOMIC_TYPE_UCHAR,
+ ATOMIC_TYPE_USHORT,
+ ATOMIC_TYPE_UINT,
+ ATOMIC_TYPE_ULONG,
+ ATOMIC_TYPE_ULONGLONG
+ };
+ for (size_t i = 0; i < lengthof(possible_kinds); ++i) {
+ if (get_atomic_type_size(possible_kinds[i]) == size) {
+ kind = possible_kinds[i];
+ break;
+ }
+ }
+ kinds[size] = kind;
+ }
+ return kind;
+}
-static type_t *identify_new_type(type_t *type)
+/**
+ * Hash the given type and return the "singleton" version
+ * of it.
+ */
+type_t *identify_new_type(type_t *type)
{
type_t *result = typehash_insert(type);
- if(result != type) {
+ if (result != type) {
obstack_free(type_obst, type);
}
return result;
}
-type_t *make_atomic_type(atomic_type_kind_t atype, type_qualifiers_t qualifiers)
+/**
+ * Creates a new atomic type.
+ *
+ * @param akind The kind of the atomic type.
+ * @param qualifiers Type qualifiers for the new type.
+ */
+type_t *make_atomic_type(atomic_type_kind_t akind, type_qualifiers_t qualifiers)
{
type_t *type = obstack_alloc(type_obst, sizeof(atomic_type_t));
memset(type, 0, sizeof(atomic_type_t));
type->kind = TYPE_ATOMIC;
type->base.qualifiers = qualifiers;
- type->atomic.akind = atype;
+ type->atomic.akind = akind;
+
+ return identify_new_type(type);
+}
+
+/**
+ * Creates a new complex type.
+ *
+ * @param akind The kind of the atomic type.
+ * @param qualifiers Type qualifiers for the new type.
+ */
+type_t *make_complex_type(atomic_type_kind_t akind, type_qualifiers_t qualifiers)
+{
+ type_t *type = obstack_alloc(type_obst, sizeof(complex_type_t));
+ memset(type, 0, sizeof(complex_type_t));
+
+ type->kind = TYPE_COMPLEX;
+ type->base.qualifiers = qualifiers;
+ type->complex.akind = akind;
return identify_new_type(type);
}
+/**
+ * Creates a new imaginary type.
+ *
+ * @param akind The kind of the atomic type.
+ * @param qualifiers Type qualifiers for the new type.
+ */
+type_t *make_imaginary_type(atomic_type_kind_t akind, type_qualifiers_t qualifiers)
+{
+ type_t *type = obstack_alloc(type_obst, sizeof(imaginary_type_t));
+ memset(type, 0, sizeof(imaginary_type_t));
+
+ type->kind = TYPE_IMAGINARY;
+ type->base.qualifiers = qualifiers;
+ type->imaginary.akind = akind;
+
+ return identify_new_type(type);
+}
+
+/**
+ * Creates a new pointer type.
+ *
+ * @param points_to The points-to type for the new type.
+ * @param qualifiers Type qualifiers for the new type.
+ */
type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers)
{
type_t *type = obstack_alloc(type_obst, sizeof(pointer_type_t));
memset(type, 0, sizeof(pointer_type_t));
- type->kind = TYPE_POINTER;
- type->base.qualifiers = qualifiers;
- type->pointer.points_to = points_to;
+ type->kind = TYPE_POINTER;
+ type->base.qualifiers = qualifiers;
+ type->pointer.points_to = points_to;
+ type->pointer.base_variable = NULL;
+
+ return identify_new_type(type);
+}
+
+/**
+ * Creates a new reference type.
+ *
+ * @param refers_to The referred-to type for the new type.
+ */
+type_t *make_reference_type(type_t *refers_to)
+{
+ type_t *type = obstack_alloc(type_obst, sizeof(reference_type_t));
+ memset(type, 0, sizeof(reference_type_t));
+
+ type->kind = TYPE_REFERENCE;
+ type->base.qualifiers = 0;
+ type->reference.refers_to = refers_to;
+
+ return identify_new_type(type);
+}
+
+/**
+ * Creates a new based pointer type.
+ *
+ * @param points_to The points-to type for the new type.
+ * @param qualifiers Type qualifiers for the new type.
+ * @param variable The based variable
+ */
+type_t *make_based_pointer_type(type_t *points_to,
+ type_qualifiers_t qualifiers, variable_t *variable)
+{
+ type_t *type = obstack_alloc(type_obst, sizeof(pointer_type_t));
+ memset(type, 0, sizeof(pointer_type_t));
+
+ type->kind = TYPE_POINTER;
+ type->base.qualifiers = qualifiers;
+ type->pointer.points_to = points_to;
+ type->pointer.base_variable = variable;
return identify_new_type(type);
}
+
+type_t *make_array_type(type_t *element_type, size_t size,
+ type_qualifiers_t qualifiers)
+{
+ type_t *type = obstack_alloc(type_obst, sizeof(array_type_t));
+ memset(type, 0, sizeof(array_type_t));
+
+ type->kind = TYPE_ARRAY;
+ type->base.qualifiers = qualifiers;
+ type->array.element_type = element_type;
+ type->array.size = size;
+ type->array.size_constant = true;
+
+ return identify_new_type(type);
+}
+
+static entity_t *pack_bitfield_members(il_size_t *struct_offset,
+ il_alignment_t *struct_alignment,
+ bool packed, entity_t *first)
+{
+ il_size_t offset = *struct_offset;
+ il_alignment_t alignment = *struct_alignment;
+ size_t bit_offset = 0;
+
+ entity_t *member;
+ for (member = first; member != NULL; member = member->base.next) {
+ if (member->kind != ENTITY_COMPOUND_MEMBER)
+ break;
+
+ type_t *type = member->declaration.type;
+ if (type->kind != TYPE_BITFIELD)
+ break;
+
+ type_t *base_type = skip_typeref(type->bitfield.base_type);
+ il_alignment_t base_alignment = get_type_alignment(base_type);
+ il_alignment_t alignment_mask = base_alignment-1;
+ if (base_alignment > alignment)
+ alignment = base_alignment;
+
+ size_t bit_size = type->bitfield.bit_size;
+ if (!packed) {
+ bit_offset += (offset & alignment_mask) * BITS_PER_BYTE;
+ offset &= ~alignment_mask;
+ size_t base_size = get_type_size(base_type) * BITS_PER_BYTE;
+
+ if (bit_offset + bit_size > base_size || bit_size == 0) {
+ offset += (bit_offset+BITS_PER_BYTE-1) / BITS_PER_BYTE;
+ offset = (offset + base_alignment-1) & ~alignment_mask;
+ bit_offset = 0;
+ }
+ }
+
+ member->compound_member.offset = offset;
+ member->compound_member.bit_offset = bit_offset;
+
+ bit_offset += bit_size;
+ offset += bit_offset / BITS_PER_BYTE;
+ bit_offset %= BITS_PER_BYTE;
+ }
+
+ if (bit_offset > 0)
+ offset += 1;
+
+ *struct_offset = offset;
+ *struct_alignment = alignment;
+
+ return member;
+}
+
+/**
+ * Finish the construction of a struct type by calculating its size, offsets,
+ * alignment.
+ */
+void layout_struct_type(compound_type_t *type)
+{
+ assert(type->compound != NULL);
+
+ compound_t *compound = type->compound;
+ if (!compound->complete)
+ return;
+ if (type->compound->layouted)
+ return;
+
+ il_size_t offset = 0;
+ il_alignment_t alignment = compound->alignment;
+ bool need_pad = false;
+
+ entity_t *entry = compound->members.entities;
+ while (entry != NULL) {
+ if (entry->kind != ENTITY_COMPOUND_MEMBER) {
+ entry = entry->base.next;
+ continue;
+ }
+
+ type_t *m_type = entry->declaration.type;
+ type_t *skipped = skip_typeref(m_type);
+ if (! is_type_valid(skipped)) {
+ entry = entry->base.next;
+ continue;
+ }
+
+ if (skipped->kind == TYPE_BITFIELD) {
+ entry = pack_bitfield_members(&offset, &alignment,
+ compound->packed, entry);
+ continue;
+ }
+
+ il_alignment_t m_alignment = get_type_alignment(m_type);
+ if (m_alignment > alignment)
+ alignment = m_alignment;
+
+ if (!compound->packed) {
+ il_size_t new_offset = (offset + m_alignment-1) & -m_alignment;
+
+ if (new_offset > offset) {
+ need_pad = true;
+ offset = new_offset;
+ }
+ }
+
+ entry->compound_member.offset = offset;
+ offset += get_type_size(m_type);
+
+ entry = entry->base.next;
+ }
+
+ if (!compound->packed) {
+ il_size_t new_offset = (offset + alignment-1) & -alignment;
+ if (new_offset > offset) {
+ need_pad = true;
+ offset = new_offset;
+ }
+ }
+
+ if (need_pad) {
+ if (warning.padded) {
+ warningf(&compound->base.source_position, "'%T' needs padding",
+ type);
+ }
+ } else if (compound->packed && warning.packed) {
+ warningf(&compound->base.source_position,
+ "superfluous packed attribute on '%T'", type);
+ }
+
+ compound->size = offset;
+ compound->alignment = alignment;
+ compound->layouted = true;
+}
+
+/**
+ * Finish the construction of an union type by calculating
+ * its size and alignment.
+ */
+void layout_union_type(compound_type_t *type)
+{
+ assert(type->compound != NULL);
+
+ compound_t *compound = type->compound;
+ if (! compound->complete)
+ return;
+
+ il_size_t size = 0;
+ il_alignment_t alignment = compound->alignment;
+
+ entity_t *entry = compound->members.entities;
+ for (; entry != NULL; entry = entry->base.next) {
+ if (entry->kind != ENTITY_COMPOUND_MEMBER)
+ continue;
+
+ type_t *m_type = entry->declaration.type;
+ if (! is_type_valid(skip_typeref(m_type)))
+ continue;
+
+ entry->compound_member.offset = 0;
+ il_size_t m_size = get_type_size(m_type);
+ if (m_size > size)
+ size = m_size;
+ il_alignment_t m_alignment = get_type_alignment(m_type);
+ if (m_alignment > alignment)
+ alignment = m_alignment;
+ }
+ size = (size + alignment - 1) & -alignment;
+
+ compound->size = size;
+ compound->alignment = alignment;
+}
+
+/**
+ * Debug helper. Prints the given type to stdout.
+ */
static __attribute__((unused))
-void dbg_type(type_t *type)
+void dbg_type(const type_t *type)
{
FILE *old_out = out;
out = stderr;
projects / cparser / blobdiff