-
-/* $Id$ */
+/**
+ *
+ * @file tpop.h
+ *
+ * Project: libFIRM
+ * File name: ir/tr/tpop.h
+ * Purpose: Opcode of types.
+ * Author: Goetz Lindenmaier
+ * Modified by:
+ * Created:
+ * Copyright: (c) 2001-2003 Universität Karlsruhe
+ * Licence: This file protected by GPL - GNU GENERAL PUBLIC LICENSE.
+ * CVS-ID: $Id$
+ *
+ * This module specifies the kinds of types available in firm.
+ *
+ * They are called type opcodes. These include classes, structs, methods, unions,
+ * arrays, enumerations, pointers and primitive types.
+ * Special types with own opcodes are the id type, a type representing an unknown
+ * type and a type used to specify that something has no type.
+ *
+ * @see type.h
+ */
# ifndef _TYPEOP_H_
# define _TYPEOP_H_
#include "ident.h"
/**
- *
- * file tpop.h
- * (C) 2001 by Universitaet Karlsruhe
- * Goetz Lindenmaier
- * This module specifies the kinds of types available in firm. They are
- * called type opcodes. These include classes, structs, methods, unions,
- * arrays, enumerations, pointers and primitive types.
- */
-
-/**
- *
- * - an enum for the type kinds
+ * An enum for the type kinds.
* For each type kind exists a typecode to identify it.
*/
typedef enum {
+ tpo_uninitialized = 0, /* not a type opcode */
tpo_class,
tpo_struct,
tpo_method,
tpo_enumeration,
tpo_pointer,
tpo_primitive,
- tpo_id
+ tpo_id,
+ tpo_none,
+ tpo_unknown,
+ tpo_max /* not a type opcode */
} tp_opcode;
/**
- *
- * a structure containing information about a kind of type.
+ * A structure containing information about a kind of type.
* A structure containing information about a kind of type. So far
* this is only the kind name, an enum for case-switching and some
* internal values.
- * @see get_tpop_name, get_tpop_code, get_tpop_ident
+ *
+ * @see get_tpop_name(), get_tpop_code(), get_tpop_ident()
*/
typedef struct tp_op tp_op;
/**
- *
* Returns the string for the type opcode.
- * @param op - The type opcode to get the string from.
- * @return a string. (@@@ Null terminated???)
*
+ * @param op The type opcode to get the string from.
+ * @return a string. (@todo Null terminated???)
*/
-const char *get_tpop_name (tp_op *op);
+const char *get_tpop_name (const tp_op *op);
/**
- *
* Returns an enum for the type opcode.
- * @param op - The type opcode to get the enum from.
- * @return the enum.
*
+ * @param op The type opcode to get the enum from.
+ * @return the enum.
*/
-tp_opcode get_tpop_code (tp_op *op);
+tp_opcode get_tpop_code (const tp_op *op);
/**
- *
* Returns the ident for the type opcode.
- * @param op - The type opcode to get the ident from.
- * @return The ident.
*
+ * @param op The type opcode to get the ident from.
+ * @return The ident.
*/
-ident *get_tpop_ident (tp_op *op);
+ident *get_tpop_ident (const tp_op *op);
/**
- *
- *
* This type opcode marks that the corresponding type is a class type.
+ *
* Consequently the type refers to supertypes, subtypes and entities.
* Entities can be any fields, but also methods.
* @@@ value class or not???
* of the library.
*/
extern tp_op *type_class;
-tp_op *get_type_class();
+tp_op *get_tpop_class(void);
/**
- *
- * type_struct
* This type opcode marks that the corresponding type is a compound type
- * as a struct in C. Consequently the type refers to a list of entities
+ * as a struct in C.
+ *
+ * Consequently the type refers to a list of entities
* which may not be methods (but pointers to methods).
* This struct is dynamically allocated but constant for the lifetime
* of the library.
*/
extern tp_op *type_struct;
-tp_op *get_type_struct();
+tp_op *get_tpop_struct(void);
/**
- *
- * type_method
* This type opcode marks that the corresponding type is a method type.
+ *
* Consequently it refers to a list of arguments and results.
* This struct is dynamically allocated but constant for the lifetime
* of the library.
*/
extern tp_op *type_method;
-tp_op *get_type_method();
+tp_op *get_tpop_method(void);
/**
- *
- * type_union
* This type opcode marks that the corresponding type is a union type.
+ *
* Consequently it refers to a list of unioned types.
* This struct is dynamically allocated but constant for the lifetime
* of the library.
*/
extern tp_op *type_union;
-tp_op *get_type_union();
+tp_op *get_tpop_union(void);
/**
- *
- * type_array
* This type opcode marks that the corresponding type is an array type.
+ *
* Consequently it contains a list of dimensions (lower and upper bounds)
* and an element type.
* This struct is dynamically allocated but constant for the lifetime
* of the library.
*/
extern tp_op *type_array;
-tp_op *get_type_array();
+tp_op *get_tpop_array(void);
/**
- *
- * type_enumeration
* This type opcode marks that the corresponding type is an enumeration type.
+ *
* Consequently it contains a list of idents for the enumeration identifiers
- * and a list of tarbet values that are the constants used to implement
+ * and a list of target values that are the constants used to implement
* the enumerators.
* This struct is dynamically allocated but constant for the lifetime
* of the library.
*/
extern tp_op *type_enumeration;
-tp_op *get_type_enumeration();
+tp_op *get_tpop_enumeration(void);
/**
- *
- * type_pointer
* This type opcode marks that the corresponding type is a pointer type.
+ *
* It contains a reference to the type the pointer points to.
* This struct is dynamically allocated but constant for the lifetime
* of the library.
*/
extern tp_op *type_pointer;
-tp_op *get_type_pointer();
+tp_op *get_tpop_pointer(void);
/**
- *
- * type_primitive
* This type opcode marks that the corresponding type is a primitive type.
+ *
* Primitive types are types that are directly mapped to target machine
* modes.
* This struct is dynamically allocated but constant for the lifetime
* of the library.
*/
extern tp_op *type_primitive;
-tp_op *get_type_primitive();
+tp_op *get_tpop_primitive(void);
/**
- *
- * type_id
* This type opcode is an auxiliary opcode dedicated to support transformations
- * of the type structure. If a type is changed to another type with another
+ * of the type structure.
+ *
+ * If a type is changed to another type with another
* opcode the new type will be allocated with new memory. All nodes refering
- * to the old type need to be changed to refer the new one. This is simplified
+ * to the old type need to be changed to refer to the new one. This is simplified
* by turning the old type into an id type that merely forwards to the new type
* that now replaces the old one.
* type_ids should never be visible out of the type module. All access routines
* of the library.
*/
extern tp_op *type_id;
-tp_op *get_type_id();
+tp_op *get_tpop_id(void);
+
+/**
+ * This type opcode is an auxiliary opcode dedicated to support type analyses.
+ *
+ * Types with this opcode represents that there is no type.
+ * The type can be used to initialize fields of the type* that actually can not
+ * contain a type or that are initialized for an analysis. There exists exactly
+ * one type with this opcode.
+ */
+extern tp_op *tpop_none;
+tp_op *get_tpop_none(void);
+
+/**
+ * This type opcode is an auxiliary opcode dedicated to support type analyses.
+ *
+ * Types with this opcode represents that there could be a type, but it is not
+ * known. This type can be used to initialize fields before an analysis (not known
+ * yet) or to represent the top of a lattice (could not be determined). There exists
+ * exactly one type with this opcode.
+ */
+extern tp_op *tpop_unknown;
+tp_op *get_tpop_unknown(void);
# endif /*_TYPEOP_H_ */
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