X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=type.c;h=365b3fecaeccff31cbe932c7b07c3f91e6c868b6;hb=57569ce27c909aa9cda1d4e1b405c83ae0ef29cb;hp=36ca1c5ad61672acc1ab3aeaee4ae0d08e77314d;hpb=5c350f5bc775f92a6fb5131e54b2e818574843aa;p=cparser

diff --git a/type.c b/type.c
index 36ca1c5..365b3fe 100644
--- a/type.c
+++ b/type.c
@@ -1,21 +1,26 @@
 #include <config.h>
 
+#include <stdio.h>
+#include <assert.h>
 #include "type_t.h"
+#include "type_hash.h"
 #include "adt/error.h"
 
-static struct obstack  _type_obst;
-struct obstack        *type_obst = &_type_obst;
-static FILE           *out;
+static struct obstack   _type_obst;
+struct obstack         *type_obst = &_type_obst;
+static FILE            *out;
+static int              type_visited = 0;
+static bool             print_compound_entries;
 
-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(type_t *type);
+static void intern_print_type_post(type_t *type);
 
-void init_types()
+void init_types(void)
 {
 	obstack_init(type_obst);
 }
 
-void exit_types()
+void exit_types(void)
 {
 	obstack_free(type_obst, NULL);
 }
@@ -25,21 +30,22 @@ void type_set_output(FILE *stream)
 	out = stream;
 }
 
+void set_print_compound_entries(bool enabled)
+{
+	print_compound_entries = enabled;
+}
+
+void inc_type_visited(void)
+{
+	type_visited++;
+}
+
 static
 void print_type_qualifiers(unsigned qualifiers)
 {
-	if(qualifiers & TYPE_QUALIFIER_CONST) {
-		fputs("const ", out);
-	}
-	if(qualifiers & TYPE_QUALIFIER_VOLATILE) {
-		fputs("volatile ", out);
-	}
-	if(qualifiers & TYPE_QUALIFIER_RESTRICT) {
-		fputs("restrict ", out);
-	}
-	if(qualifiers & TYPE_QUALIFIER_INLINE) {
-		fputs("inline ", out);
-	}
+	if(qualifiers & TYPE_QUALIFIER_CONST)    fputs("const ",    out);
+	if(qualifiers & TYPE_QUALIFIER_VOLATILE) fputs("volatile ", out);
+	if(qualifiers & TYPE_QUALIFIER_RESTRICT) fputs("restrict ", out);
 }
 
 static
@@ -47,30 +53,31 @@ void print_atomic_type(const atomic_type_t *type)
 {
 	print_type_qualifiers(type->type.qualifiers);
 
+	const char *s;
 	switch(type->atype) {
-	case ATOMIC_TYPE_INVALID:     fputs("INVALIDATOMIC", out); return;
-	case ATOMIC_TYPE_VOID:        fputs("void", out); return;
-	case ATOMIC_TYPE_BOOL:        fputs("bool", out); return;
-	case ATOMIC_TYPE_CHAR:        fputs("char", out); return;
-	case ATOMIC_TYPE_SCHAR:       fputs("signed char", out); return;
-	case ATOMIC_TYPE_UCHAR:       fputs("unsigned char", out); return;
-	case ATOMIC_TYPE_INT:         fputs("int", out); return;
-	case ATOMIC_TYPE_UINT:        fputs("unsigned int", out); return;
-	case ATOMIC_TYPE_SHORT:       fputs("short", out); return;
-	case ATOMIC_TYPE_USHORT:      fputs("unsigned short", out); return;
-	case ATOMIC_TYPE_LONG:        fputs("long", out); return;
-	case ATOMIC_TYPE_ULONG:       fputs("unsigned long", out); return;
-	case ATOMIC_TYPE_LONGLONG:    fputs("long long", out); return;
-	case ATOMIC_TYPE_ULONGLONG:   fputs("unsigned long long", out); return;
-	case ATOMIC_TYPE_LONG_DOUBLE: fputs("long double", out); return;
-	case ATOMIC_TYPE_FLOAT:       fputs("float", out); return;
-	case ATOMIC_TYPE_DOUBLE:      fputs("double", out); return;
+	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;
 	}
-	fputs("UNKNOWNATOMIC", out);
+	fputs(s, out);
 }
 
-static
-void print_method_type_pre(const method_type_t *type)
+static void print_function_type_pre(const function_type_t *type)
 {
 	print_type_qualifiers(type->type.qualifiers);
 
@@ -80,8 +87,8 @@ void print_method_type_pre(const method_type_t *type)
 	fputc('(', out);
 }
 
-static
-void print_method_type_post(const method_type_t *type)
+static void print_function_type_post(const function_type_t *type,
+                                     const context_t *context)
 {
 	/* TODO: don't emit braces if we're the toplevel type... */
 	intern_print_type_post(type->result_type);
@@ -89,15 +96,28 @@ void print_method_type_post(const method_type_t *type)
 
 	fputc('(', out);
 
-	method_parameter_t *parameter = type->parameters;
 	int                 first     = 1;
-	for( ; parameter != NULL; parameter = parameter->next) {
-		if(first) {
-			first = 0;
-		} else {
-			fputs(", ", out);
+	if(context == NULL) {
+		function_parameter_t *parameter = type->parameters;
+		for( ; parameter != NULL; parameter = parameter->next) {
+			if(first) {
+				first = 0;
+			} else {
+				fputs(", ", out);
+			}
+			print_type(parameter->type);
+		}
+	} else {
+		declaration_t *parameter = context->declarations;
+		for( ; parameter != NULL; parameter = parameter->next) {
+			if(first) {
+				first = 0;
+			} else {
+				fputs(", ", out);
+			}
+			print_type_ext(parameter->type, parameter->symbol,
+			               &parameter->context);
 		}
-		print_type(parameter->type, NULL);
 	}
 	if(type->variadic) {
 		if(first) {
@@ -113,97 +133,198 @@ void print_method_type_post(const method_type_t *type)
 	fputc(')', out);
 }
 
-static
-void print_pointer_type_pre(const pointer_type_t *type)
+static void print_pointer_type_pre(const pointer_type_t *type)
 {
 	intern_print_type_pre(type->points_to);
 	fputs("*", out);
 	print_type_qualifiers(type->type.qualifiers);
 }
 
-static
-void print_pointer_type_post(const pointer_type_t *type)
+static void print_pointer_type_post(const pointer_type_t *type)
 {
 	intern_print_type_post(type->points_to);
 }
 
-static
-void print_type_enum(const enum_type_t *type)
+static void print_array_type_pre(const array_type_t *type)
+{
+	intern_print_type_pre(type->element_type);
+}
+
+static void print_array_type_post(const array_type_t *type)
 {
+	intern_print_type_post(type->element_type);
+	fputc('[', out);
+	if(type->is_static) {
+		fputs("static ", out);
+	}
 	print_type_qualifiers(type->type.qualifiers);
-	if(type->symbol != NULL) {
-		fprintf(out, "enum %s", type->symbol->string);
-	} else {
-		fprintf(out, "enum {\n");
-
-		enum_entry_t *entry = type->entries;
-		for( ; entry != NULL; entry = entry->next) {
-			fprintf(out, "\t%s", entry->symbol->string);
-			if(entry->value != NULL) {
-				fprintf(out, " = ");
-				print_expression(entry->value);
-			}
-			fprintf(out, ",\n");
+	if(type->size != NULL) {
+		print_expression(type->size);
+	}
+	fputc(']', out);
+}
+
+void print_enum_definition(const declaration_t *declaration)
+{
+	fputs("{\n", out);
+
+	change_indent(1);
+
+	declaration_t *entry = declaration->next;
+	for( ; entry != NULL && entry->storage_class == STORAGE_CLASS_ENUM_ENTRY;
+	       entry = entry->next) {
+
+		print_indent();
+		fprintf(out, "%s", entry->symbol->string);
+		if(entry->init.initializer != NULL) {
+			fprintf(out, " = ");
+			print_expression(entry->init.enum_value);
 		}
+		fprintf(out, ",\n");
+	}
+
+	change_indent(-1);
+	print_indent();
+	fputs("}", out);
+}
+
+static void print_type_enum(const enum_type_t *type)
+{
+	print_type_qualifiers(type->type.qualifiers);
+	fputs("enum ", out);
+
+	declaration_t *declaration = type->declaration;
+	symbol_t      *symbol      = declaration->symbol;
+	if(symbol != NULL) {
+		fputs(symbol->string, out);
+	} else {
+		print_enum_definition(declaration);
+	}
+}
+
+void print_compound_definition(const declaration_t *declaration)
+{
+	fputs("{\n", out);
+	change_indent(1);
 
-		fprintf(out, "} ");
+	declaration_t *iter = declaration->context.declarations;
+	for( ; iter != NULL; iter = iter->next) {
+		print_indent();
+		print_declaration(iter);
+		fputc('\n', out);
 	}
+
+	change_indent(-1);
+	print_indent();
+	fputs("}", out);
 }
 
-static
-void intern_print_type_pre(const type_t *type)
+static void print_compound_type(const compound_type_t *type)
+{
+	print_type_qualifiers(type->type.qualifiers);
+
+	if(type->type.type == TYPE_COMPOUND_STRUCT) {
+		fputs("struct ", out);
+	} else {
+		assert(type->type.type == TYPE_COMPOUND_UNION);
+		fputs("union ", out);
+	}
+
+	declaration_t *declaration = type->declaration;
+	symbol_t      *symbol      = declaration->symbol;
+	if(symbol != NULL) {
+		fputs(symbol->string, out);
+	} else {
+		print_compound_definition(declaration);
+	}
+}
+
+static void print_typedef_type_pre(typedef_type_t *type)
+{
+	fputs(type->declaration->symbol->string, out);
+}
+
+static void print_typeof_type_pre(typeof_type_t *type)
+{
+	fputs("typeof(", out);
+	if(type->expression != NULL) {
+		assert(type->typeof_type == NULL);
+		print_expression(type->expression);
+	} else {
+		print_type(type->typeof_type);
+	}
+	fputc(')', out);
+}
+
+static void intern_print_type_pre(type_t *type)
 {
 	switch(type->type) {
 	case TYPE_INVALID:
 		fputs("invalid", out);
 		return;
 	case TYPE_ENUM:
-		print_type_enum((const enum_type_t*) type);
+		print_type_enum((enum_type_t*) type);
 		return;
 	case TYPE_ATOMIC:
-		print_atomic_type((const atomic_type_t*) type);
+		print_atomic_type((atomic_type_t*) type);
 		return;
 	case TYPE_COMPOUND_STRUCT:
 	case TYPE_COMPOUND_UNION:
-		print_type_qualifiers(type->qualifiers);
-		if(((const compound_type_t*) type)->symbol != NULL) {
-			fprintf(out, "%s", ((const compound_type_t*) type)->symbol->string);
-		}
+		print_compound_type((compound_type_t*) type);
 		return;
 	case TYPE_BUILTIN:
 		fputs(((builtin_type_t*) type)->symbol->string, out);
 		return;
-	case TYPE_METHOD:
-		print_method_type_pre((const method_type_t*) type);
+	case TYPE_FUNCTION:
+		print_function_type_pre((function_type_t*) type);
 		return;
 	case TYPE_POINTER:
-		print_pointer_type_pre((const pointer_type_t*) type);
+		print_pointer_type_pre((pointer_type_t*) type);
+		return;
+	case TYPE_ARRAY:
+		print_array_type_pre((array_type_t*) type);
+		return;
+	case TYPE_TYPEDEF:
+		print_typedef_type_pre((typedef_type_t*) type);
+		return;
+	case TYPE_TYPEOF:
+		print_typeof_type_pre((typeof_type_t*) type);
 		return;
 	}
 	fputs("unknown", out);
 }
 
-static
-void intern_print_type_post(const type_t *type)
+static void intern_print_type_post(type_t *type)
 {
 	switch(type->type) {
-	case TYPE_METHOD:
-		print_method_type_post((const method_type_t*) type);
+	case TYPE_FUNCTION:
+		print_function_type_post((const function_type_t*) type, NULL);
 		return;
 	case TYPE_POINTER:
 		print_pointer_type_post((const pointer_type_t*) type);
 		return;
+	case TYPE_ARRAY:
+		print_array_type_post((const array_type_t*) type);
+		return;
 	case TYPE_INVALID:
 	case TYPE_ATOMIC:
 	case TYPE_ENUM:
 	case TYPE_COMPOUND_STRUCT:
 	case TYPE_COMPOUND_UNION:
 	case TYPE_BUILTIN:
+	case TYPE_TYPEOF:
+	case TYPE_TYPEDEF:
 		break;
 	}
 }
 
-void print_type(const type_t *type, const symbol_t *symbol)
+void print_type(type_t *type)
+{
+	print_type_ext(type, NULL, NULL);
+}
+
+void print_type_ext(type_t *type, const symbol_t *symbol,
+                    const context_t *context)
 {
 	if(type == NULL) {
 		fputs("nil type", out);
@@ -215,21 +336,29 @@ void print_type(const type_t *type, const symbol_t *symbol)
 		fputc(' ', out);
 		fputs(symbol->string, out);
 	}
-	intern_print_type_post(type);
+	if(type->type == TYPE_FUNCTION) {
+		print_function_type_post((const function_type_t*) type, context);
+	} else {
+		intern_print_type_post(type);
+	}
 }
 
-int type_valid(const type_t *type)
+bool type_valid(const type_t *type)
 {
 	return type->type != TYPE_INVALID;
 }
 
-int is_type_int(const type_t *type)
+bool is_type_integer(const type_t *type)
 {
+	if(type->type == TYPE_ENUM)
+		return true;
+
 	if(type->type != TYPE_ATOMIC)
-		return 0;
+		return false;
 
 	atomic_type_t *atomic_type = (atomic_type_t*) type;
 	switch(atomic_type->atype) {
+	case ATOMIC_TYPE_BOOL:
 	case ATOMIC_TYPE_CHAR:
 	case ATOMIC_TYPE_SCHAR:
 	case ATOMIC_TYPE_UCHAR:
@@ -241,18 +370,219 @@ int is_type_int(const type_t *type)
 	case ATOMIC_TYPE_ULONG:
 	case ATOMIC_TYPE_LONGLONG:
 	case ATOMIC_TYPE_ULONGLONG:
-		return 1;
+		return true;
 	default:
-		return 0;
+		return false;
 	}
 }
 
+bool is_type_floating(const type_t *type)
+{
+	if(type->type != TYPE_ATOMIC)
+		return false;
+
+	atomic_type_t *atomic_type = (atomic_type_t*) type;
+	switch(atomic_type->atype) {
+	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 false;
+	}
+}
+
+bool is_type_signed(const type_t *type)
+{
+	/* enum types are int for now */
+	if(type->type == TYPE_ENUM)
+		return true;
+
+	if(type->type != TYPE_ATOMIC)
+		return false;
+
+	atomic_type_t *atomic_type = (atomic_type_t*) type;
+	switch(atomic_type->atype) {
+	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
+		return true;
+
+	case ATOMIC_TYPE_BOOL:
+	case ATOMIC_TYPE_UCHAR:
+	case ATOMIC_TYPE_USHORT:
+	case ATOMIC_TYPE_UINT:
+	case ATOMIC_TYPE_ULONG:
+	case ATOMIC_TYPE_ULONGLONG:
+		return false;
+
+	case ATOMIC_TYPE_INVALID:
+	case ATOMIC_TYPE_VOID:
+		return false;
+	}
+
+	panic("invalid atomic type found");
+	return false;
+}
+
+bool is_type_arithmetic(const type_t *type)
+{
+	if(is_type_integer(type) || is_type_floating(type))
+		return 1;
+
+	return 0;
+}
+
+bool is_type_scalar(const type_t *type)
+{
+	if(type->type == TYPE_POINTER)
+		return 1;
+
+	return is_type_arithmetic(type);
+}
+
+bool is_type_incomplete(const type_t *type)
+{
+	switch(type->type) {
+	case TYPE_COMPOUND_STRUCT:
+	case TYPE_COMPOUND_UNION: {
+		const compound_type_t *compound_type
+			= (const compound_type_t*) type;
+		declaration_t *declaration = compound_type->declaration;
+		return !declaration->init.is_defined;
+	}
+	case TYPE_FUNCTION:
+		return true;
+
+	case TYPE_ARRAY:
+	case TYPE_ATOMIC:
+	case TYPE_POINTER:
+	case TYPE_ENUM:
+		return false;
+
+	case TYPE_TYPEDEF:
+	case TYPE_TYPEOF:
+	case TYPE_BUILTIN:
+		panic("is_type_incomplete called without typerefs skipped");
+	case TYPE_INVALID:
+		break;
+	}
+
+	panic("invalid type found");
+}
+
+bool types_compatible(const type_t *type1, const type_t *type2)
+{
+	(void) type1;
+	(void) type2;
+	return true;
+}
+
+bool pointers_compatible(const type_t *type1, const type_t *type2)
+{
+	assert(type1->type == TYPE_POINTER);
+	assert(type2->type == TYPE_POINTER);
+	pointer_type_t *pointer_type1 = (pointer_type_t*) type1;
+	pointer_type_t *pointer_type2 = (pointer_type_t*) type2;
+	return types_compatible(pointer_type1->points_to,
+	                        pointer_type2->points_to);
+}
+
+type_t *skip_typeref(type_t *type)
+{
+	while(1) {
+		switch(type->type) {
+		case TYPE_TYPEDEF: {
+			const typedef_type_t *typedef_type = (const typedef_type_t*) type;
+			type = typedef_type->declaration->type;
+			continue;
+		}
+		case TYPE_TYPEOF: {
+			const typeof_type_t *typeof_type = (const typeof_type_t *) type;
+			if(typeof_type->typeof_type != NULL) {
+				type = typeof_type->typeof_type;
+			} else {
+				type = typeof_type->expression->datatype;
+			}
+			continue;
+		}
+		case TYPE_BUILTIN: {
+			const builtin_type_t *builtin_type = (const builtin_type_t*) type;
+			type = builtin_type->real_type;
+			continue;
+		}
+		default:
+			break;
+		}
+		break;
+	}
+
+	return type;
+}
+
+
+
+static type_t *identify_new_type(type_t *type)
+{
+	type_t *result = typehash_insert(type);
+	if(result != type) {
+		obstack_free(type_obst, type);
+	}
+	return result;
+}
+
+type_t *make_atomic_type(atomic_type_type_t type, type_qualifier_t qualifiers)
+{
+	atomic_type_t *atomic_type
+		= obstack_alloc(type_obst, sizeof(atomic_type[0]));
+	memset(atomic_type, 0, sizeof(atomic_type[0]));
+	atomic_type->type.type       = TYPE_ATOMIC;
+	atomic_type->type.qualifiers = qualifiers;
+	atomic_type->atype           = type;
+
+	return identify_new_type((type_t*) atomic_type);
+}
+
+type_t *make_pointer_type(type_t *points_to, type_qualifier_t qualifiers)
+{
+	pointer_type_t *pointer_type
+		= obstack_alloc(type_obst, sizeof(pointer_type[0]));
+	memset(pointer_type, 0, sizeof(pointer_type[0]));
+	pointer_type->type.type       = TYPE_POINTER;
+	pointer_type->type.qualifiers = qualifiers;
+	pointer_type->points_to       = points_to;
+
+	return identify_new_type((type_t*) pointer_type);
+}
+
 static __attribute__((unused))
-void dbg_type(const type_t *type)
+void dbg_type(type_t *type)
 {
 	FILE *old_out = out;
 	out = stderr;
-	print_type(type, NULL);
+	print_type(type);
 	puts("\n");
 	fflush(stderr);
 	out = old_out;