X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=inline;f=type.c;h=5134fd5335bb59c352cb02e205bff39739c2255c;hb=7923d6be3b8493730fe233ab3c4c390099534cbe;hp=3ab686da3c6b6a9171127e7c040937970f08d8fe;hpb=a6c7a5b4a77d9a9581a6c79b3810229c5b8fce5d;p=cparser

diff --git a/type.c b/type.c
index 3ab686d..5134fd5 100644
--- a/type.c
+++ b/type.c
@@ -52,6 +52,12 @@ static atomic_type_properties_t atomic_type_properties[ATOMIC_TYPE_LAST+1] = {
 		.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,
@@ -177,6 +183,8 @@ void init_types(void)
 	/* 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)
@@ -216,6 +224,7 @@ const char *get_atomic_kind_name(atomic_type_kind_t kind)
 	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";
@@ -356,15 +365,19 @@ static void print_function_type_post(const function_type_t *type,
 		}
 	} else {
 		entity_t *parameter = parameters->entities;
-		for( ; parameter != NULL; parameter = parameter->base.next) {
+		for (; parameter != NULL; parameter = parameter->base.next) {
 			if (first) {
 				first = false;
 			} else {
 				fputs(", ", out);
 			}
 			assert(is_declaration(parameter));
-			print_type_ext(parameter->declaration.type, parameter->base.symbol,
-			               NULL);
+			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) {
@@ -391,10 +404,28 @@ static void print_function_type_post(const function_type_t *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->base.qualifiers);
-	if (type->base.qualifiers != 0)
+	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 prefix part of a reference type.
+ *
+ * @param type   The reference type.
+ */
+static void print_reference_type_pre(const reference_type_t *type)
+{
+	intern_print_type_pre(type->refers_to, false);
+	fputc('&', out);
 }
 
 /**
@@ -407,6 +438,16 @@ static void print_pointer_type_post(const pointer_type_t *type)
 	intern_print_type_post(type->points_to, false);
 }
 
+/**
+ * Prints the postfix part of a reference type.
+ *
+ * @param type   The reference type.
+ */
+static void print_reference_type_post(const reference_type_t *type)
+{
+	intern_print_type_post(type->refers_to, false);
+}
+
 /**
  * Prints the prefix part of an array type.
  *
@@ -467,9 +508,9 @@ void print_enum_definition(const enum_t *enume)
 	       entry = entry->base.next) {
 
 		print_indent();
-		fprintf(out, "%s", entry->base.symbol->string);
+		fputs(entry->base.symbol->string, out);
 		if (entry->enum_value.value != NULL) {
-			fprintf(out, " = ");
+			fputs(" = ", out);
 
 			/* skip the implicit cast */
 			expression_t *expression = entry->enum_value.value;
@@ -478,12 +519,12 @@ void print_enum_definition(const enum_t *enume)
 			}
 			print_expression(expression);
 		}
-		fprintf(out, ",\n");
+		fputs(",\n", out);
 	}
 
 	change_indent(-1);
 	print_indent();
-	fputs("}", out);
+	fputc('}', out);
 }
 
 /**
@@ -526,7 +567,10 @@ void print_compound_definition(const compound_t *compound)
 
 	change_indent(-1);
 	print_indent();
-	fputs("}", out);
+	fputc('}', out);
+	if (compound->modifiers & DM_TRANSPARENT_UNION) {
+		fputs("__attribute__((__transparent_union__))", out);
+	}
 }
 
 /**
@@ -625,6 +669,9 @@ static void intern_print_type_pre(const type_t *const type, const bool top)
 	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_type, top);
 		return;
@@ -656,6 +703,9 @@ static void intern_print_type_post(const type_t *const type, const bool top)
 	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;
@@ -675,6 +725,10 @@ static void intern_print_type_post(const type_t *const type, const bool top)
 	case TYPE_TYPEDEF:
 		break;
 	}
+
+	if (type->base.modifiers & DM_TRANSPARENT_UNION) {
+		fputs("__attribute__((__transparent_union__))", out);
+	}
 }
 
 /**
@@ -723,6 +777,7 @@ static size_t get_type_size(const type_t *type)
 	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);
@@ -1004,6 +1059,7 @@ bool is_type_incomplete(const type_t *type)
 	case TYPE_BITFIELD:
 	case TYPE_FUNCTION:
 	case TYPE_POINTER:
+	case TYPE_REFERENCE:
 	case TYPE_BUILTIN:
 	case TYPE_ERROR:
 		return false;
@@ -1125,6 +1181,12 @@ bool types_compatible(const type_t *type1, const type_t *type2)
 		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_ENUM:
@@ -1426,14 +1488,56 @@ 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->base.alignment    = 0;
-	type->pointer.points_to = points_to;
+	type->kind                  = TYPE_POINTER;
+	type->base.qualifiers       = qualifiers;
+	type->base.alignment        = 0;
+	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->base.alignment      = 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->base.alignment        = 0;
+	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)
 {