0
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1 /* Part of CPP library.
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2 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
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3 2008, 2009 Free Software Foundation, Inc.
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4
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5 This program is free software; you can redistribute it and/or modify it
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6 under the terms of the GNU General Public License as published by the
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7 Free Software Foundation; either version 3, or (at your option) any
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8 later version.
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9
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10 This program is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 GNU General Public License for more details.
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; see the file COPYING3. If not see
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17 <http://www.gnu.org/licenses/>. */
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18
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19 /* This header defines all the internal data structures and functions
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20 that need to be visible across files. It should not be used outside
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21 cpplib. */
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22
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23 #ifndef LIBCPP_INTERNAL_H
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24 #define LIBCPP_INTERNAL_H
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25
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26 #include "symtab.h"
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27 #include "cpp-id-data.h"
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28
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29 #ifndef HAVE_ICONV_H
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30 #undef HAVE_ICONV
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31 #endif
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32
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33 #if HAVE_ICONV
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34 #include <iconv.h>
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35 #else
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36 #define HAVE_ICONV 0
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37 typedef int iconv_t; /* dummy */
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38 #endif
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39
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40 struct directive; /* Deliberately incomplete. */
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41 struct pending_option;
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42 struct op;
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43 struct _cpp_strbuf;
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44
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45 typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t,
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46 struct _cpp_strbuf *);
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47 struct cset_converter
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48 {
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49 convert_f func;
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50 iconv_t cd;
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51 int width;
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52 };
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53
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54 #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
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55
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56 /* Test if a sign is valid within a preprocessing number. */
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57 #define VALID_SIGN(c, prevc) \
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58 (((c) == '+' || (c) == '-') && \
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59 ((prevc) == 'e' || (prevc) == 'E' \
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60 || (((prevc) == 'p' || (prevc) == 'P') \
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61 && CPP_OPTION (pfile, extended_numbers))))
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62
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63 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
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64 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
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65 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base)
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66 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
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67
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68 #define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \
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69 const struct line_maps *line_table = PFILE->line_table; \
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70 const struct line_map *map = &line_table->maps[line_table->used-1]; \
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71 linenum_type line = SOURCE_LINE (map, line_table->highest_line); \
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72 linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \
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73 } while (0)
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74
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75 /* Maximum nesting of cpp_buffers. We use a static limit, partly for
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76 efficiency, and partly to limit runaway recursion. */
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77 #define CPP_STACK_MAX 200
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78
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79 /* Host alignment handling. */
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80 struct dummy
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81 {
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82 char c;
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83 union
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84 {
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85 double d;
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86 int *p;
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87 } u;
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88 };
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89
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90 #define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
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91 #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
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92 #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
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93
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94 #define _cpp_mark_macro_used(NODE) do { \
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95 if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN)) \
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96 (NODE)->value.macro->used = 1; } while (0)
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97
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98 /* A generic memory buffer, and operations on it. */
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99 typedef struct _cpp_buff _cpp_buff;
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100 struct _cpp_buff
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101 {
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102 struct _cpp_buff *next;
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103 unsigned char *base, *cur, *limit;
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104 };
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105
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106 extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t);
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107 extern void _cpp_release_buff (cpp_reader *, _cpp_buff *);
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108 extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t);
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109 extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t);
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110 extern void _cpp_free_buff (_cpp_buff *);
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111 extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t);
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112 extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t);
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113
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114 #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
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115 #define BUFF_FRONT(BUFF) ((BUFF)->cur)
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116 #define BUFF_LIMIT(BUFF) ((BUFF)->limit)
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117
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118 /* #include types. */
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119 enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
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120
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121 union utoken
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122 {
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123 const cpp_token *token;
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124 const cpp_token **ptoken;
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125 };
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126
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127 /* A "run" of tokens; part of a chain of runs. */
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128 typedef struct tokenrun tokenrun;
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129 struct tokenrun
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130 {
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131 tokenrun *next, *prev;
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132 cpp_token *base, *limit;
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133 };
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134
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135 /* Accessor macros for struct cpp_context. */
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136 #define FIRST(c) ((c)->u.iso.first)
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137 #define LAST(c) ((c)->u.iso.last)
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138 #define CUR(c) ((c)->u.trad.cur)
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139 #define RLIMIT(c) ((c)->u.trad.rlimit)
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140
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141 typedef struct cpp_context cpp_context;
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142 struct cpp_context
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143 {
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144 /* Doubly-linked list. */
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145 cpp_context *next, *prev;
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146
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147 union
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148 {
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149 /* For ISO macro expansion. Contexts other than the base context
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150 are contiguous tokens. e.g. macro expansions, expanded
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151 argument tokens. */
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152 struct
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153 {
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154 union utoken first;
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155 union utoken last;
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156 } iso;
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157
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158 /* For traditional macro expansion. */
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159 struct
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160 {
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161 const unsigned char *cur;
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162 const unsigned char *rlimit;
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163 } trad;
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164 } u;
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165
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166 /* If non-NULL, a buffer used for storage related to this context.
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167 When the context is popped, the buffer is released. */
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168 _cpp_buff *buff;
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169
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170 /* For a macro context, the macro node, otherwise NULL. */
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171 cpp_hashnode *macro;
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172
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173 /* True if utoken element is token, else ptoken. */
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174 bool direct_p;
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175 };
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176
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177 struct lexer_state
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178 {
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179 /* Nonzero if first token on line is CPP_HASH. */
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180 unsigned char in_directive;
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181
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182 /* Nonzero if in a directive that will handle padding tokens itself.
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183 #include needs this to avoid problems with computed include and
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184 spacing between tokens. */
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185 unsigned char directive_wants_padding;
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186
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187 /* True if we are skipping a failed conditional group. */
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188 unsigned char skipping;
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189
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190 /* Nonzero if in a directive that takes angle-bracketed headers. */
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191 unsigned char angled_headers;
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192
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193 /* Nonzero if in a #if or #elif directive. */
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194 unsigned char in_expression;
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195
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196 /* Nonzero to save comments. Turned off if discard_comments, and in
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197 all directives apart from #define. */
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198 unsigned char save_comments;
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199
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200 /* Nonzero if lexing __VA_ARGS__ is valid. */
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201 unsigned char va_args_ok;
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202
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203 /* Nonzero if lexing poisoned identifiers is valid. */
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204 unsigned char poisoned_ok;
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205
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206 /* Nonzero to prevent macro expansion. */
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207 unsigned char prevent_expansion;
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208
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209 /* Nonzero when parsing arguments to a function-like macro. */
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210 unsigned char parsing_args;
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211
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212 /* Nonzero if prevent_expansion is true only because output is
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213 being discarded. */
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214 unsigned char discarding_output;
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215
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216 /* Nonzero to skip evaluating part of an expression. */
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217 unsigned int skip_eval;
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218
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219 /* Nonzero when handling a deferred pragma. */
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220 unsigned char in_deferred_pragma;
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221
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222 /* Nonzero if the deferred pragma being handled allows macro expansion. */
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223 unsigned char pragma_allow_expansion;
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224 };
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225
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226 /* Special nodes - identifiers with predefined significance. */
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227 struct spec_nodes
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228 {
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229 cpp_hashnode *n_defined; /* defined operator */
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230 cpp_hashnode *n_true; /* C++ keyword true */
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231 cpp_hashnode *n_false; /* C++ keyword false */
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232 cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */
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233 };
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234
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235 typedef struct _cpp_line_note _cpp_line_note;
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236 struct _cpp_line_note
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237 {
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238 /* Location in the clean line the note refers to. */
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239 const unsigned char *pos;
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240
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241 /* Type of note. The 9 'from' trigraph characters represent those
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242 trigraphs, '\\' an escaped newline, ' ' an escaped newline with
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243 intervening space, and anything else is invalid. */
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244 unsigned int type;
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245 };
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246
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247 /* Represents the contents of a file cpplib has read in. */
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248 struct cpp_buffer
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249 {
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250 const unsigned char *cur; /* Current location. */
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251 const unsigned char *line_base; /* Start of current physical line. */
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252 const unsigned char *next_line; /* Start of to-be-cleaned logical line. */
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253
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254 const unsigned char *buf; /* Entire character buffer. */
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255 const unsigned char *rlimit; /* Writable byte at end of file. */
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256
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257 _cpp_line_note *notes; /* Array of notes. */
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258 unsigned int cur_note; /* Next note to process. */
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259 unsigned int notes_used; /* Number of notes. */
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260 unsigned int notes_cap; /* Size of allocated array. */
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261
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262 struct cpp_buffer *prev;
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263
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264 /* Pointer into the file table; non-NULL if this is a file buffer.
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265 Used for include_next and to record control macros. */
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266 struct _cpp_file *file;
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267
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268 /* Saved value of __TIMESTAMP__ macro - date and time of last modification
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269 of the assotiated file. */
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270 const unsigned char *timestamp;
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271
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272 /* Value of if_stack at start of this file.
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273 Used to prohibit unmatched #endif (etc) in an include file. */
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274 struct if_stack *if_stack;
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275
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276 /* True if we need to get the next clean line. */
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277 bool need_line;
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278
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279 /* True if we have already warned about C++ comments in this file.
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280 The warning happens only for C89 extended mode with -pedantic on,
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281 or for -Wtraditional, and only once per file (otherwise it would
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282 be far too noisy). */
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283 unsigned int warned_cplusplus_comments : 1;
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284
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285 /* True if we don't process trigraphs and escaped newlines. True
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286 for preprocessed input, command line directives, and _Pragma
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287 buffers. */
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288 unsigned int from_stage3 : 1;
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289
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290 /* At EOF, a buffer is automatically popped. If RETURN_AT_EOF is
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291 true, a CPP_EOF token is then returned. Otherwise, the next
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292 token from the enclosing buffer is returned. */
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293 unsigned int return_at_eof : 1;
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294
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295 /* One for a system header, two for a C system header file that therefore
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296 needs to be extern "C" protected in C++, and zero otherwise. */
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297 unsigned char sysp;
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298
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299 /* The directory of the this buffer's file. Its NAME member is not
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300 allocated, so we don't need to worry about freeing it. */
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301 struct cpp_dir dir;
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302
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303 /* Descriptor for converting from the input character set to the
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304 source character set. */
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305 struct cset_converter input_cset_desc;
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306 };
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307
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308 /* A cpp_reader encapsulates the "state" of a pre-processor run.
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309 Applying cpp_get_token repeatedly yields a stream of pre-processor
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310 tokens. Usually, there is only one cpp_reader object active. */
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311 struct cpp_reader
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312 {
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313 /* Top of buffer stack. */
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314 cpp_buffer *buffer;
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315
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316 /* Overlaid buffer (can be different after processing #include). */
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317 cpp_buffer *overlaid_buffer;
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318
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319 /* Lexer state. */
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320 struct lexer_state state;
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321
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322 /* Source line tracking. */
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323 struct line_maps *line_table;
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324
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325 /* The line of the '#' of the current directive. */
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326 source_location directive_line;
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327
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328 /* Memory buffers. */
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329 _cpp_buff *a_buff; /* Aligned permanent storage. */
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330 _cpp_buff *u_buff; /* Unaligned permanent storage. */
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331 _cpp_buff *free_buffs; /* Free buffer chain. */
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332
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333 /* Context stack. */
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334 struct cpp_context base_context;
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335 struct cpp_context *context;
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336
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337 /* If in_directive, the directive if known. */
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338 const struct directive *directive;
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339
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340 /* Token generated while handling a directive, if any. */
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341 cpp_token directive_result;
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342
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343 /* When expanding a macro at top-level, this is the location of the
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344 macro invocation. */
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345 source_location invocation_location;
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346
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347 /* True if this call to cpp_get_token should consider setting
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348 invocation_location. */
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349 bool set_invocation_location;
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350
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351 /* Search paths for include files. */
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352 struct cpp_dir *quote_include; /* "" */
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353 struct cpp_dir *bracket_include; /* <> */
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354 struct cpp_dir no_search_path; /* No path. */
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355
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356 /* Chain of all hashed _cpp_file instances. */
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357 struct _cpp_file *all_files;
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358
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359 struct _cpp_file *main_file;
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360
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361 /* File and directory hash table. */
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362 struct htab *file_hash;
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363 struct htab *dir_hash;
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364 struct file_hash_entry_pool *file_hash_entries;
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365
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366 /* Negative path lookup hash table. */
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367 struct htab *nonexistent_file_hash;
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368 struct obstack nonexistent_file_ob;
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369
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370 /* Nonzero means don't look for #include "foo" the source-file
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371 directory. */
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372 bool quote_ignores_source_dir;
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373
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374 /* Nonzero if any file has contained #pragma once or #import has
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375 been used. */
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376 bool seen_once_only;
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377
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378 /* Multiple include optimization. */
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379 const cpp_hashnode *mi_cmacro;
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380 const cpp_hashnode *mi_ind_cmacro;
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381 bool mi_valid;
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382
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383 /* Lexing. */
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384 cpp_token *cur_token;
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385 tokenrun base_run, *cur_run;
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386 unsigned int lookaheads;
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387
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388 /* Nonzero prevents the lexer from re-using the token runs. */
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389 unsigned int keep_tokens;
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390
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391 /* Error counter for exit code. */
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392 unsigned int errors;
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393
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394 /* Buffer to hold macro definition string. */
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395 unsigned char *macro_buffer;
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396 unsigned int macro_buffer_len;
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397
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398 /* Descriptor for converting from the source character set to the
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399 execution character set. */
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400 struct cset_converter narrow_cset_desc;
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401
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402 /* Descriptor for converting from the source character set to the
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403 UTF-16 execution character set. */
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404 struct cset_converter char16_cset_desc;
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405
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406 /* Descriptor for converting from the source character set to the
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407 UTF-32 execution character set. */
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408 struct cset_converter char32_cset_desc;
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409
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410 /* Descriptor for converting from the source character set to the
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411 wide execution character set. */
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412 struct cset_converter wide_cset_desc;
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413
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414 /* Date and time text. Calculated together if either is requested. */
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415 const unsigned char *date;
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416 const unsigned char *time;
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417
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418 /* EOF token, and a token forcing paste avoidance. */
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419 cpp_token avoid_paste;
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420 cpp_token eof;
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421
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422 /* Opaque handle to the dependencies of mkdeps.c. */
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423 struct deps *deps;
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424
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425 /* Obstack holding all macro hash nodes. This never shrinks.
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426 See identifiers.c */
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427 struct obstack hash_ob;
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428
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429 /* Obstack holding buffer and conditional structures. This is a
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430 real stack. See directives.c. */
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431 struct obstack buffer_ob;
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432
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433 /* Pragma table - dynamic, because a library user can add to the
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434 list of recognized pragmas. */
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435 struct pragma_entry *pragmas;
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436
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437 /* Call backs to cpplib client. */
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438 struct cpp_callbacks cb;
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439
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440 /* Identifier hash table. */
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441 struct ht *hash_table;
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442
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443 /* Expression parser stack. */
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444 struct op *op_stack, *op_limit;
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445
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446 /* User visible options. */
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447 struct cpp_options opts;
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448
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449 /* Special nodes - identifiers with predefined significance to the
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450 preprocessor. */
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451 struct spec_nodes spec_nodes;
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452
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453 /* Whether cpplib owns the hashtable. */
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454 bool our_hashtable;
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455
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456 /* Traditional preprocessing output buffer (a logical line). */
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457 struct
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458 {
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459 unsigned char *base;
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460 unsigned char *limit;
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461 unsigned char *cur;
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462 source_location first_line;
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463 } out;
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464
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465 /* Used for buffer overlays by traditional.c. */
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466 const unsigned char *saved_cur, *saved_rlimit, *saved_line_base;
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467
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468 /* A saved list of the defined macros, for dependency checking
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469 of precompiled headers. */
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470 struct cpp_savedstate *savedstate;
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471
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472 /* Next value of __COUNTER__ macro. */
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473 unsigned int counter;
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474
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475 /* Table of comments, when state.save_comments is true. */
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476 cpp_comment_table comments;
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477 };
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478
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479 /* Character classes. Based on the more primitive macros in safe-ctype.h.
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480 If the definition of `numchar' looks odd to you, please look up the
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481 definition of a pp-number in the C standard [section 6.4.8 of C99].
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482
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483 In the unlikely event that characters other than \r and \n enter
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484 the set is_vspace, the macro handle_newline() in lex.c must be
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485 updated. */
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486 #define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
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487
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488 #define is_idchar(x) (ISIDNUM(x) || _dollar_ok(x))
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489 #define is_numchar(x) ISIDNUM(x)
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490 #define is_idstart(x) (ISIDST(x) || _dollar_ok(x))
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491 #define is_numstart(x) ISDIGIT(x)
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492 #define is_hspace(x) ISBLANK(x)
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493 #define is_vspace(x) IS_VSPACE(x)
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494 #define is_nvspace(x) IS_NVSPACE(x)
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495 #define is_space(x) IS_SPACE_OR_NUL(x)
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496
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497 /* This table is constant if it can be initialized at compile time,
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498 which is the case if cpp was compiled with GCC >=2.7, or another
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499 compiler that supports C99. */
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500 #if HAVE_DESIGNATED_INITIALIZERS
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501 extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
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502 #else
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503 extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
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504 #endif
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505
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506 /* Macros. */
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507
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508 static inline int cpp_in_system_header (cpp_reader *);
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509 static inline int
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510 cpp_in_system_header (cpp_reader *pfile)
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511 {
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512 return pfile->buffer ? pfile->buffer->sysp : 0;
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513 }
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514 #define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
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515 #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
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516
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517 static inline int cpp_in_primary_file (cpp_reader *);
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518 static inline int
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519 cpp_in_primary_file (cpp_reader *pfile)
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520 {
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521 return pfile->line_table->depth == 1;
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522 }
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523
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524 /* In macro.c */
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525 extern void _cpp_free_definition (cpp_hashnode *);
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526 extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *);
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527 extern void _cpp_pop_context (cpp_reader *);
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528 extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *,
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529 const unsigned char *, size_t);
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530 extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *);
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531 extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *,
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532 unsigned int);
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533 extern const unsigned char *_cpp_builtin_macro_text (cpp_reader *,
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534 cpp_hashnode *);
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535 extern int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *);
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536 extern void _cpp_push_token_context (cpp_reader *, cpp_hashnode *,
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537 const cpp_token *, unsigned int);
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538 extern void _cpp_backup_tokens_direct (cpp_reader *, unsigned int);
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539
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540 /* In identifiers.c */
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541 extern void _cpp_init_hashtable (cpp_reader *, hash_table *);
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542 extern void _cpp_destroy_hashtable (cpp_reader *);
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543
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|
544 /* In files.c */
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545 typedef struct _cpp_file _cpp_file;
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546 extern _cpp_file *_cpp_find_file (cpp_reader *, const char *, cpp_dir *,
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547 bool, int);
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548 extern bool _cpp_find_failed (_cpp_file *);
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549 extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *);
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550 extern void _cpp_fake_include (cpp_reader *, const char *);
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551 extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool);
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552 extern bool _cpp_stack_include (cpp_reader *, const char *, int,
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553 enum include_type);
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554 extern int _cpp_compare_file_date (cpp_reader *, const char *, int);
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555 extern void _cpp_report_missing_guards (cpp_reader *);
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556 extern void _cpp_init_files (cpp_reader *);
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557 extern void _cpp_cleanup_files (cpp_reader *);
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558 extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *);
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559 extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f);
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560 extern bool _cpp_read_file_entries (cpp_reader *, FILE *);
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561 extern struct stat *_cpp_get_file_stat (_cpp_file *);
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562
|
|
563 /* In expr.c */
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564 extern bool _cpp_parse_expr (cpp_reader *, bool);
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565 extern struct op *_cpp_expand_op_stack (cpp_reader *);
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566
|
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567 /* In lex.c */
|
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568 extern void _cpp_process_line_notes (cpp_reader *, int);
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569 extern void _cpp_clean_line (cpp_reader *);
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570 extern bool _cpp_get_fresh_line (cpp_reader *);
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571 extern bool _cpp_skip_block_comment (cpp_reader *);
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572 extern cpp_token *_cpp_temp_token (cpp_reader *);
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573 extern const cpp_token *_cpp_lex_token (cpp_reader *);
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574 extern cpp_token *_cpp_lex_direct (cpp_reader *);
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575 extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *);
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576 extern void _cpp_init_tokenrun (tokenrun *, unsigned int);
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577
|
|
578 /* In init.c. */
|
|
579 extern void _cpp_maybe_push_include_file (cpp_reader *);
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|
580
|
|
581 /* In directives.c */
|
|
582 extern int _cpp_test_assertion (cpp_reader *, unsigned int *);
|
|
583 extern int _cpp_handle_directive (cpp_reader *, int);
|
|
584 extern void _cpp_define_builtin (cpp_reader *, const char *);
|
|
585 extern char ** _cpp_save_pragma_names (cpp_reader *);
|
|
586 extern void _cpp_restore_pragma_names (cpp_reader *, char **);
|
|
587 extern int _cpp_do__Pragma (cpp_reader *);
|
|
588 extern void _cpp_init_directives (cpp_reader *);
|
|
589 extern void _cpp_init_internal_pragmas (cpp_reader *);
|
|
590 extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *,
|
|
591 linenum_type, unsigned int);
|
|
592 extern void _cpp_pop_buffer (cpp_reader *);
|
|
593
|
|
594 /* In directives.c */
|
|
595 struct _cpp_dir_only_callbacks
|
|
596 {
|
|
597 /* Called to print a block of lines. */
|
|
598 void (*print_lines) (int, const void *, size_t);
|
|
599 void (*maybe_print_line) (source_location);
|
|
600 };
|
|
601
|
|
602 extern void _cpp_preprocess_dir_only (cpp_reader *,
|
|
603 const struct _cpp_dir_only_callbacks *);
|
|
604
|
|
605 /* In traditional.c. */
|
|
606 extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *);
|
|
607 extern bool _cpp_read_logical_line_trad (cpp_reader *);
|
|
608 extern void _cpp_overlay_buffer (cpp_reader *pfile, const unsigned char *,
|
|
609 size_t);
|
|
610 extern void _cpp_remove_overlay (cpp_reader *);
|
|
611 extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *);
|
|
612 extern bool _cpp_expansions_different_trad (const cpp_macro *,
|
|
613 const cpp_macro *);
|
|
614 extern unsigned char *_cpp_copy_replacement_text (const cpp_macro *,
|
|
615 unsigned char *);
|
|
616 extern size_t _cpp_replacement_text_len (const cpp_macro *);
|
|
617
|
|
618 /* In charset.c. */
|
|
619
|
|
620 /* The normalization state at this point in the sequence.
|
|
621 It starts initialized to all zeros, and at the end
|
|
622 'level' is the normalization level of the sequence. */
|
|
623
|
|
624 struct normalize_state
|
|
625 {
|
|
626 /* The previous character. */
|
|
627 cppchar_t previous;
|
|
628 /* The combining class of the previous character. */
|
|
629 unsigned char prev_class;
|
|
630 /* The lowest normalization level so far. */
|
|
631 enum cpp_normalize_level level;
|
|
632 };
|
|
633 #define INITIAL_NORMALIZE_STATE { 0, 0, normalized_KC }
|
|
634 #define NORMALIZE_STATE_RESULT(st) ((st)->level)
|
|
635
|
|
636 /* We saw a character that matches ISIDNUM(), update a
|
|
637 normalize_state appropriately. */
|
|
638 #define NORMALIZE_STATE_UPDATE_IDNUM(st) \
|
|
639 ((st)->previous = 0, (st)->prev_class = 0)
|
|
640
|
|
641 extern cppchar_t _cpp_valid_ucn (cpp_reader *, const unsigned char **,
|
|
642 const unsigned char *, int,
|
|
643 struct normalize_state *state);
|
|
644 extern void _cpp_destroy_iconv (cpp_reader *);
|
|
645 extern unsigned char *_cpp_convert_input (cpp_reader *, const char *,
|
|
646 unsigned char *, size_t, size_t,
|
|
647 const unsigned char **, off_t *);
|
|
648 extern const char *_cpp_default_encoding (void);
|
|
649 extern cpp_hashnode * _cpp_interpret_identifier (cpp_reader *pfile,
|
|
650 const unsigned char *id,
|
|
651 size_t len);
|
|
652
|
|
653 /* Utility routines and macros. */
|
|
654 #define DSC(str) (const unsigned char *)str, sizeof str - 1
|
|
655
|
|
656 /* These are inline functions instead of macros so we can get type
|
|
657 checking. */
|
|
658 static inline int ustrcmp (const unsigned char *, const unsigned char *);
|
|
659 static inline int ustrncmp (const unsigned char *, const unsigned char *,
|
|
660 size_t);
|
|
661 static inline size_t ustrlen (const unsigned char *);
|
|
662 static inline unsigned char *uxstrdup (const unsigned char *);
|
|
663 static inline unsigned char *ustrchr (const unsigned char *, int);
|
|
664 static inline int ufputs (const unsigned char *, FILE *);
|
|
665
|
|
666 /* Use a const char for the second parameter since it is usually a literal. */
|
|
667 static inline int ustrcspn (const unsigned char *, const char *);
|
|
668
|
|
669 static inline int
|
|
670 ustrcmp (const unsigned char *s1, const unsigned char *s2)
|
|
671 {
|
|
672 return strcmp ((const char *)s1, (const char *)s2);
|
|
673 }
|
|
674
|
|
675 static inline int
|
|
676 ustrncmp (const unsigned char *s1, const unsigned char *s2, size_t n)
|
|
677 {
|
|
678 return strncmp ((const char *)s1, (const char *)s2, n);
|
|
679 }
|
|
680
|
|
681 static inline int
|
|
682 ustrcspn (const unsigned char *s1, const char *s2)
|
|
683 {
|
|
684 return strcspn ((const char *)s1, s2);
|
|
685 }
|
|
686
|
|
687 static inline size_t
|
|
688 ustrlen (const unsigned char *s1)
|
|
689 {
|
|
690 return strlen ((const char *)s1);
|
|
691 }
|
|
692
|
|
693 static inline unsigned char *
|
|
694 uxstrdup (const unsigned char *s1)
|
|
695 {
|
|
696 return (unsigned char *) xstrdup ((const char *)s1);
|
|
697 }
|
|
698
|
|
699 static inline unsigned char *
|
|
700 ustrchr (const unsigned char *s1, int c)
|
|
701 {
|
|
702 return (unsigned char *) strchr ((const char *)s1, c);
|
|
703 }
|
|
704
|
|
705 static inline int
|
|
706 ufputs (const unsigned char *s, FILE *f)
|
|
707 {
|
|
708 return fputs ((const char *)s, f);
|
|
709 }
|
|
710
|
|
711 #endif /* ! LIBCPP_INTERNAL_H */
|