1 /*****************************************************************************/
5 /* Type string handling for the cc65 C compiler */
9 /* (C) 1998-2002 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
51 /*****************************************************************************/
53 /*****************************************************************************/
58 /* Basic data types */
65 T_TYPE_SHORT = 0x0002,
68 T_TYPE_LONGLONG = 0x0005,
70 T_TYPE_FLOAT = 0x0007,
71 T_TYPE_DOUBLE = 0x0008,
73 T_TYPE_STRUCT = 0x000A,
74 T_TYPE_UNION = 0x000B,
75 T_TYPE_ARRAY = 0x000C,
81 T_CLASS_NONE = 0x0000,
83 T_CLASS_FLOAT = 0x0040,
85 T_CLASS_STRUCT = 0x0080,
86 T_CLASS_FUNC = 0x00A0,
87 T_MASK_CLASS = 0x00E0,
91 T_SIGN_UNSIGNED = 0x0100,
92 T_SIGN_SIGNED = 0x0200,
95 /* Type size modifiers */
97 T_SIZE_SHORT = 0x0400,
99 T_SIZE_LONGLONG = 0x0C00,
100 T_MASK_SIZE = 0x0C00,
102 /* Type qualifiers */
103 T_QUAL_NONE = 0x0000,
104 T_QUAL_CONST = 0x1000,
105 T_QUAL_VOLATILE = 0x2000,
106 T_MASK_QUAL = 0x3000,
109 T_CHAR = T_TYPE_CHAR | T_CLASS_INT | T_SIGN_UNSIGNED | T_SIZE_NONE,
110 T_SCHAR = T_TYPE_CHAR | T_CLASS_INT | T_SIGN_SIGNED | T_SIZE_NONE,
111 T_UCHAR = T_TYPE_CHAR | T_CLASS_INT | T_SIGN_UNSIGNED | T_SIZE_NONE,
112 T_SHORT = T_TYPE_SHORT | T_CLASS_INT | T_SIGN_SIGNED | T_SIZE_SHORT,
113 T_USHORT = T_TYPE_SHORT | T_CLASS_INT | T_SIGN_UNSIGNED | T_SIZE_SHORT,
114 T_INT = T_TYPE_INT | T_CLASS_INT | T_SIGN_SIGNED | T_SIZE_NONE,
115 T_UINT = T_TYPE_INT | T_CLASS_INT | T_SIGN_UNSIGNED | T_SIZE_NONE,
116 T_LONG = T_TYPE_LONG | T_CLASS_INT | T_SIGN_SIGNED | T_SIZE_LONG,
117 T_ULONG = T_TYPE_LONG | T_CLASS_INT | T_SIGN_UNSIGNED | T_SIZE_LONG,
118 T_LONGLONG = T_TYPE_LONGLONG | T_CLASS_INT | T_SIGN_SIGNED | T_SIZE_LONGLONG,
119 T_ULONGLONG = T_TYPE_LONGLONG | T_CLASS_INT | T_SIGN_UNSIGNED | T_SIZE_LONGLONG,
120 T_ENUM = T_TYPE_ENUM | T_CLASS_INT | T_SIGN_SIGNED | T_SIZE_NONE,
121 T_FLOAT = T_TYPE_FLOAT | T_CLASS_FLOAT | T_SIGN_NONE | T_SIZE_NONE,
122 T_DOUBLE = T_TYPE_DOUBLE | T_CLASS_FLOAT | T_SIGN_NONE | T_SIZE_NONE,
123 T_VOID = T_TYPE_VOID | T_CLASS_NONE | T_SIGN_NONE | T_SIZE_NONE,
124 T_STRUCT = T_TYPE_STRUCT | T_CLASS_STRUCT | T_SIGN_NONE | T_SIZE_NONE,
125 T_UNION = T_TYPE_UNION | T_CLASS_STRUCT | T_SIGN_NONE | T_SIZE_NONE,
126 T_ARRAY = T_TYPE_ARRAY | T_CLASS_PTR | T_SIGN_NONE | T_SIZE_NONE,
127 T_PTR = T_TYPE_PTR | T_CLASS_PTR | T_SIGN_NONE | T_SIZE_NONE,
128 T_FUNC = T_TYPE_FUNC | T_CLASS_FUNC | T_SIGN_NONE | T_SIZE_NONE,
134 /* Forward for a symbol entry */
138 typedef unsigned short type;
140 /* Maximum length of a type string */
141 #define MAXTYPELEN 30
143 /* Type elements needed for Encode/Decode */
144 #define DECODE_SIZE 5
147 #define SIZEOF_CHAR 1
148 #define SIZEOF_SHORT 2
150 #define SIZEOF_LONG 4
151 #define SIZEOF_LONGLONG 8
152 #define SIZEOF_FLOAT 4
153 #define SIZEOF_DOUBLE 4
156 /* Predefined type strings */
157 extern type type_uchar [];
158 extern type type_int [];
159 extern type type_uint [];
160 extern type type_long [];
161 extern type type_ulong [];
162 extern type type_void [];
163 extern type type_size_t [];
167 /*****************************************************************************/
169 /*****************************************************************************/
173 unsigned TypeLen (const type* Type);
174 /* Return the length of the type string */
176 type* TypeCpy (type* Dest, const type* Src);
177 /* Copy a type string */
179 type* TypeCat (type* Dest, const type* Src);
182 type* TypeDup (const type* Type);
183 /* Create a copy of the given type on the heap */
185 type* TypeAlloc (unsigned Len);
186 /* Allocate memory for a type string of length Len. Len *must* include the
190 void TypeFree (type* Type);
191 /* Free a type string */
193 int SignExtendChar (int C);
194 /* Do correct sign extension of a character */
196 type GetDefaultChar (void);
197 /* Return the default char type (signed/unsigned) depending on the settings */
199 type* GetCharArrayType (unsigned Len);
200 /* Return the type for a char array of the given length */
202 type* GetImplicitFuncType (void);
203 /* Return a type string for an inplicitly declared function */
205 type* PointerTo (const type* T);
206 /* Return a type string that is "pointer to T". The type string is allocated
207 * on the heap and may be freed after use.
210 void PrintType (FILE* F, const type* Type);
211 /* Output translation of type array. */
213 void PrintRawType (FILE* F, const type* Type);
214 /* Print a type string in raw format (for debugging) */
216 void PrintFuncSig (FILE* F, const char* Name, type* Type);
217 /* Print a function signature. */
219 void Encode (type* Type, unsigned long Val);
220 /* Encode an unsigned long into a type array */
222 void EncodePtr (type* Type, void* P);
223 /* Encode a pointer into a type array */
225 unsigned long Decode (const type* Type);
226 /* Decode an unsigned long from a type array */
228 void* DecodePtr (const type* Type);
229 /* Decode a pointer from a type array */
231 int HasEncode (const type* Type);
232 /* Return true if the given type has encoded data */
234 void CopyEncode (const type* Source, type* Target);
235 /* Copy encoded data from Source to Target */
237 #if defined(HAVE_INLINE)
238 INLINE type UnqualifiedType (type T)
239 /* Return the unqalified type */
241 return (T & ~T_MASK_QUAL);
244 # define UnqualifiedType(T) ((T) & ~T_MASK_QUAL)
247 unsigned SizeOf (const type* Type);
248 /* Compute size of object represented by type array. */
250 unsigned PSizeOf (const type* Type);
251 /* Compute size of pointer object. */
253 unsigned CheckedSizeOf (const type* T);
254 /* Return the size of a data type. If the size is zero, emit an error and
255 * return some valid size instead (so the rest of the compiler doesn't have
256 * to work with invalid sizes).
258 unsigned CheckedPSizeOf (const type* T);
259 /* Return the size of a data type that is pointed to by a pointer. If the
260 * size is zero, emit an error and return some valid size instead (so the
261 * rest of the compiler doesn't have to work with invalid sizes).
264 unsigned TypeOf (const type* Type);
265 /* Get the code generator base type of the object */
267 type* Indirect (type* Type);
268 /* Do one indirection for the given type, that is, return the type where the
269 * given type points to.
272 #if defined(HAVE_INLINE)
273 INLINE int IsTypeChar (const type* T)
274 /* Return true if this is a character type */
276 return (T[0] & T_MASK_TYPE) == T_TYPE_CHAR;
279 # define IsTypeChar(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_CHAR)
282 #if defined(HAVE_INLINE)
283 INLINE int IsTypeInt (const type* T)
284 /* Return true if this is an int type (signed or unsigned) */
286 return (T[0] & T_MASK_TYPE) == T_TYPE_INT;
289 # define IsTypeInt(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_INT)
292 #if defined(HAVE_INLINE)
293 INLINE int IsTypeLong (const type* T)
294 /* Return true if this is a long type (signed or unsigned) */
296 return (T[0] & T_MASK_TYPE) == T_TYPE_LONG;
299 # define IsTypeLong(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_LONG)
302 #if defined(HAVE_INLINE)
303 INLINE int IsTypeFloat (const type* T)
304 /* Return true if this is a float type */
306 return (T[0] & T_MASK_TYPE) == T_TYPE_FLOAT;
309 # define IsTypeFloat(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_FLOAT)
312 #if defined(HAVE_INLINE)
313 INLINE int IsTypeDouble (const type* T)
314 /* Return true if this is a double type */
316 return (T[0] & T_MASK_TYPE) == T_TYPE_DOUBLE;
319 # define IsTypeDouble(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_DOUBLE)
322 #if defined(HAVE_INLINE)
323 INLINE int IsTypePtr (const type* T)
324 /* Return true if this is a pointer type */
326 return ((T[0] & T_MASK_TYPE) == T_TYPE_PTR);
329 # define IsTypePtr(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_PTR)
332 #if defined(HAVE_INLINE)
333 INLINE int IsTypeStruct (const type* T)
334 /* Return true if this is a struct type */
336 return ((T[0] & T_MASK_TYPE) == T_TYPE_STRUCT);
339 # define IsTypeStruct(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_STRUCT)
342 #if defined(HAVE_INLINE)
343 INLINE int IsTypeUnion (const type* T)
344 /* Return true if this is a union type */
346 return ((T[0] & T_MASK_TYPE) == T_TYPE_UNION);
349 # define IsTypeUnion(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_UNION)
352 #if defined(HAVE_INLINE)
353 INLINE int IsTypeArray (const type* T)
354 /* Return true if this is an array type */
356 return ((T[0] & T_MASK_TYPE) == T_TYPE_ARRAY);
359 # define IsTypeArray(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_ARRAY)
362 #if defined(HAVE_INLINE)
363 INLINE int IsTypeVoid (const type* T)
364 /* Return true if this is a void type */
366 return (T[0] & T_MASK_TYPE) == T_TYPE_VOID;
369 # define IsTypeVoid(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_VOID)
372 #if defined(HAVE_INLINE)
373 INLINE int IsTypeFunc (const type* T)
374 /* Return true if this is a function class */
376 return ((T[0] & T_MASK_TYPE) == T_TYPE_FUNC);
379 # define IsTypeFunc(T) (((T)[0] & T_MASK_TYPE) == T_TYPE_FUNC)
382 #if defined(HAVE_INLINE)
383 INLINE int IsTypeFuncPtr (const type* T)
384 /* Return true if this is a function pointer */
386 return ((T[0] & T_MASK_TYPE) == T_TYPE_PTR && (T[1] & T_MASK_TYPE) == T_TYPE_FUNC);
389 # define IsTypeFuncPtr(T) \
390 ((((T)[0] & T_MASK_TYPE) == T_TYPE_PTR) && (((T)[1] & T_MASK_TYPE) == T_TYPE_FUNC))
393 int IsClassInt (const type* Type) attribute ((const));
394 /* Return true if this is an integer type */
396 int IsClassFloat (const type* Type) attribute ((const));
397 /* Return true if this is a float type */
399 int IsClassPtr (const type* Type) attribute ((const));
400 /* Return true if this is a pointer type */
402 int IsClassStruct (const type* Type) attribute ((const));
403 /* Return true if this is a struct type */
405 int IsSignUnsigned (const type* Type) attribute ((const));
406 /* Return true if this is an unsigned type */
408 int IsQualConst (const type* T) attribute ((const));
409 /* Return true if the given type has a const memory image */
411 int IsQualVolatile (const type* T) attribute ((const));
412 /* Return true if the given type has a volatile type qualifier */
414 int IsFastCallFunc (const type* T) attribute ((const));
415 /* Return true if this is a function type or pointer to function with
416 * __fastcall__ calling conventions
419 int IsVariadicFunc (const type* T) attribute ((const));
420 /* Return true if this is a function type or pointer to function type with
421 * variable parameter list
424 #if defined(HAVE_INLINE)
425 INLINE type GetType (const type* T)
426 /* Get the raw type */
428 return (T[0] & T_MASK_TYPE);
431 # define GetType(T) ((T)[0] & T_MASK_TYPE)
434 #if defined(HAVE_INLINE)
435 INLINE type GetClass (const type* T)
436 /* Get the class of a type string */
438 return (T[0] & T_MASK_CLASS);
441 # define GetClass(T) ((T)[0] & T_MASK_CLASS)
444 #if defined(HAVE_INLINE)
445 INLINE type GetSignedness (const type* T)
446 /* Get the sign of a type */
448 return (T[0] & T_MASK_SIGN);
451 # define GetSignedness(T) ((T)[0] & T_MASK_SIGN)
454 #if defined(HAVE_INLINE)
455 INLINE type GetSizeModifier (const type* T)
456 /* Get the size modifier of a type */
458 return (T[0] & T_MASK_SIZE);
461 # define GetSizeModifier(T) ((T)[0] & T_MASK_SIZE)
464 type GetQualifier (const type* T) attribute ((const));
465 /* Get the qualifier from the given type string */
467 FuncDesc* GetFuncDesc (const type* T) attribute ((const));
468 /* Get the FuncDesc pointer from a function or pointer-to-function type */
470 type* GetFuncReturn (type* T) attribute ((const));
471 /* Return a pointer to the return type of a function or pointer-to-function type */
475 /* End of datatype.h */