git.m6w6.name Git - m6w6/ext-psi/blob - src/token.h

   1 /*******************************************************************************
   2  Copyright (c) 2016, Michael Wallner <mike@php.net>.
   3  All rights reserved.
   4
   5  Redistribution and use in source and binary forms, with or without
   6  modification, are permitted provided that the following conditions are met:
   7
   8      * Redistributions of source code must retain the above copyright notice,
   9        this list of conditions and the following disclaimer.
  10      * Redistributions in binary form must reproduce the above copyright
  11        notice, this list of conditions and the following disclaimer in the
  12        documentation and/or other materials provided with the distribution.
  13
  14  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  15  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  17  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
  18  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  20  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  21  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  22  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24 *******************************************************************************/
  25
  26 #ifndef PSI_TOKEN_H
  27 #define PSI_TOKEN_H
  28
  29 #include <stddef.h>
  30 #include <stdarg.h>
  31 #include <stdint.h>
  32 #include <assert.h>
  33 #include <sys/param.h>
  34
  35 static inline size_t psi_align(size_t s, size_t a) {
  36         return ((s - 1) | (a - 1)) + 1;
  37 }
  38
  39 static inline size_t psi_offset_padding(size_t diff, size_t alignment) {
  40         if (diff && diff <= psi_align(diff, alignment)) {
  41                 diff = 0;
  42         }
  43
  44         return diff;
  45 }
  46
  47 #include "parser_proc.h"
  48
  49 #define PSI_T_POINTER PSI_T_ASTERISK
  50 #define PSI_T_LONG_DOUBLE (PSI_T_DOUBLE << 16)
  51 #define PSI_T_BSLASH (PSI_T_SLASH << 16)
  52 #define PSI_T_WHITESPACE -PSI_T_NO_WHITESPACE
  53
  54 typedef int token_t;
  55
  56 static inline size_t psi_t_alignment(token_t t)
  57 {
  58 #define PSI_ALIGNOF(T) case PSI_T_## T: return ALIGNOF_## T ##_T;
  59         switch (t) {
  60         PSI_ALIGNOF(INT8);
  61         PSI_ALIGNOF(UINT8);
  62         PSI_ALIGNOF(INT16);
  63         PSI_ALIGNOF(UINT16);
  64         PSI_ALIGNOF(INT32);
  65         PSI_ALIGNOF(UINT32);
  66         PSI_ALIGNOF(INT64);
  67         PSI_ALIGNOF(UINT64);
  68         case PSI_T_FLOAT:
  69                 return ALIGNOF_FLOAT;
  70         case PSI_T_DOUBLE:
  71                 return ALIGNOF_DOUBLE;
  72         case PSI_T_POINTER:
  73         case PSI_T_FUNCTION:
  74                 return ALIGNOF_VOID_P;
  75         case PSI_T_ENUM:
  76                 return ALIGNOF_INT;
  77 #ifdef HAVE_LONG_DOUBLE
  78         case PSI_T_LONG_DOUBLE:
  79                 return ALIGNOF_LONG_DOUBLE;
  80 #endif
  81         default:
  82                 assert(0);
  83         }
  84         return 0;
  85 }
  86
  87 static inline size_t psi_t_size(token_t t)
  88 {
  89 #define PSI_SIZEOF(T) case PSI_T_## T : return SIZEOF_## T ##_T;
  90         switch (t) {
  91         PSI_SIZEOF(INT8);
  92         PSI_SIZEOF(UINT8);
  93         PSI_SIZEOF(INT16);
  94         PSI_SIZEOF(UINT16);
  95         PSI_SIZEOF(INT32);
  96         PSI_SIZEOF(UINT32);
  97         PSI_SIZEOF(INT64);
  98         PSI_SIZEOF(UINT64);
  99         case PSI_T_FLOAT:
 100                 return SIZEOF_FLOAT;
 101         case PSI_T_DOUBLE:
 102                 return SIZEOF_DOUBLE;
 103         case PSI_T_VOID:
 104         case PSI_T_POINTER:
 105         case PSI_T_FUNCTION:
 106                 return SIZEOF_VOID_P;
 107         case PSI_T_ENUM:
 108                 return SIZEOF_INT;
 109 #ifdef HAVE_LONG_DOUBLE
 110         case PSI_T_LONG_DOUBLE:
 111                 return SIZEOF_LONG_DOUBLE;
 112 #endif
 113         default:
 114                 assert(!t);
 115         }
 116         return 0;
 117 }
 118
 119 static inline const char *psi_t_indent(unsigned level) {
 120         static const char indent[] =
 121                         "\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t";
 122         return &indent[32 - MIN(32, level)];
 123 }
 124
 125 static inline const char *psi_t_indirection(unsigned pointer_level) {
 126         static const char indir[] = "********************************";
 127         return &indir[32 - MIN(32, pointer_level)];
 128 }
 129
 130 struct psi_token {
 131         token_t type;
 132         unsigned size, line, col;
 133         char *text, *file;
 134         char buf[1];
 135 };
 136
 137 struct psi_parser;
 138
 139 struct psi_token *psi_token_alloc(struct psi_parser *P);
 140 size_t psi_token_alloc_size(size_t token_len, size_t fname_len);
 141 struct psi_token *psi_token_copy(struct psi_token *src);
 142 void psi_token_copy_ctor(struct psi_token **src);
 143 struct psi_token *psi_token_cat(const char *sep, unsigned argc, ...);
 144 struct psi_token *psi_token_prepend(const char *sep, struct psi_token *T, unsigned argc, ...);
 145 struct psi_token *psi_token_append(const char *sep, struct psi_token *T, unsigned argc, ...);
 146 struct psi_token *psi_token_translit(struct psi_token *T, char *from, char *to);
 147 uint64_t psi_token_hash(struct psi_token *t, char *digest_buf);
 148 void psi_token_dump(int fd, struct psi_token *t);
 149 void psi_token_free(struct psi_token **token);
 150
 151 #endif