1 /* -*- indented-text -*- */
2 /* Process source files and output type information.
3 Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
28 #define malloc xmalloc
29 #define realloc xrealloc
33 #define YY_DECL int yylex (const char **yylval)
34 #define yyterminate() return EOF_TOKEN
36 struct fileloc lexer_line;
37 int lexer_toplevel_done;
40 update_lineno (const char *l, size_t len)
49 ID [[:alpha:]_][[:alnum:]_]*
52 IWORD short|long|(un)?signed|char|int|HOST_WIDE_INT|HOST_WIDEST_INT|bool|size_t|BOOL_BITFIELD|CPPCHAR_SIGNED_T|ino_t|dev_t|HARD_REG_SET
53 ITYPE {IWORD}({WS}{IWORD})*
56 %x in_struct in_struct_comment in_comment
57 %option warn noyywrap nounput nodefault perf-report
58 %option 8bit never-interactive
60 /* Do this on entry to yylex(): */
62 if (lexer_toplevel_done)
65 lexer_toplevel_done = 0;
68 /* Things we look for in skipping mode: */
70 ^{HWS}typedef/{EOID} {
91 ^{HWS}DEF_VEC_[OP]/{EOID} {
95 ^{HWS}DEF_VEC_I/{EOID} {
99 ^{HWS}DEF_VEC_ALLOC_[IOP]/{EOID} {
107 "/*" { BEGIN(in_struct_comment); }
109 {WS} { update_lineno (yytext, yyleng); }
110 \\\n { lexer_line.line++; }
112 "const"/{EOID} /* don't care */
113 "GTY"/{EOID} { return GTY_TOKEN; }
114 "VEC"/{EOID} { return VEC_TOKEN; }
115 "union"/{EOID} { return UNION; }
116 "struct"/{EOID} { return STRUCT; }
117 "enum"/{EOID} { return ENUM; }
118 "ptr_alias"/{EOID} { return PTR_ALIAS; }
119 "nested_ptr"/{EOID} { return NESTED_PTR; }
120 [0-9]+ { return NUM; }
121 "param"[0-9]*"_is"/{EOID} {
122 *yylval = XDUPVAR (const char, yytext, yyleng, yyleng+1);
126 {IWORD}({WS}{IWORD})*/{EOID} |
127 "ENUM_BITFIELD"{WS}?"("{WS}?{ID}{WS}?")" {
130 for (len = yyleng; ISSPACE (yytext[len-1]); len--)
133 *yylval = XDUPVAR (const char, yytext, len, len+1);
134 update_lineno (yytext, yyleng);
140 *yylval = XDUPVAR (const char, yytext, yyleng, yyleng+1);
145 *yylval = XDUPVAR (const char, yytext+1, yyleng-2, yyleng-1);
148 /* This "terminal" avoids having to parse integer constant expressions. */
150 *yylval = XDUPVAR (const char, yytext+1, yyleng-2, yyleng-1);
153 "'"("\\".|[^\\])"'" {
154 *yylval = XDUPVAR (const char, yytext+1, yyleng-2, yyleng);
158 "..." { return ELLIPSIS; }
159 [(){},*:<>;=%|-] { return yytext[0]; }
161 /* ignore pp-directives */
162 ^{HWS}"#"{HWS}[a-z_]+[^\n]*\n {lexer_line.line++;}
165 error_at_line (&lexer_line, "unexpected character `%s'", yytext);
169 "/*" { BEGIN(in_comment); }
170 \n { lexer_line.line++; }
172 "'"("\\".|[^\\])"'" |
173 [^"/\n] /* do nothing */
174 \"([^"\\]|\\.|\\\n)*\" { update_lineno (yytext, yyleng); }
175 "/"/[^*] /* do nothing */
177 <in_comment,in_struct_comment>{
178 \n { lexer_line.line++; }
180 [^*\n] /* do nothing */
181 "*"/[^/] /* do nothing */
183 <in_comment>"*/" { BEGIN(INITIAL); }
184 <in_struct_comment>"*/" { BEGIN(in_struct); }
187 <in_struct_comment,in_comment>"*" {
188 error_at_line (&lexer_line,
189 "unterminated comment or string; unexpected EOF");
192 ^{HWS}"#"{HWS}"define"{WS}"GTY(" /* do nothing */
197 yybegin (const char *fname)
199 yyin = fopen (fname, "r");
205 lexer_line.file = input_file_by_name (fname);