summaryrefslogtreecommitdiff
path: root/Source/cmCommandArgumentLexer.in.l
blob: d10e50d970528c97801a196a533d36315de0a2a7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
%{
/*============================================================================
  CMake - Cross Platform Makefile Generator
  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium

  Distributed under the OSI-approved BSD License (the "License");
  see accompanying file Copyright.txt for details.

  This software is distributed WITHOUT ANY WARRANTY; without even the
  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the License for more information.
============================================================================*/
/*

This file must be translated to C and modified to build everywhere.

Run flex like this:

  flex --prefix=cmCommandArgument_yy --header-file=cmCommandArgumentLexer.h -ocmCommandArgumentLexer.cxx cmCommandArgumentLexer.in.l

Modify cmCommandArgumentLexer.cxx:
  - add #include "cmStandardIncludes.h" to top of file
  - put header block at top of file
  - remove TABs
  - remove "yyscanner" argument from these methods:
      yy_fatal_error, cmCommandArgument_yyalloc, cmCommandArgument_yyrealloc, cmCommandArgument_yyfree
  - remove all YY_BREAK lines occurring right after return statements
  - change while ( 1 ) to for(;;)
  - add "return 0;" to end of cmCommandArgument_yylex

Modify cmCommandArgumentLexer.h:
  - remove TABs
  - remove the yy_init_globals function
  - remove the block that includes unistd.h
  - remove #line directives (avoids bogus warning on old Sun)

*/

#include "cmStandardLexer.h"

#include "cmCommandArgumentParserHelper.h"

/* Replace the lexer input function.  */
#undef YY_INPUT
#define YY_INPUT(buf, result, max_size) \
  { result = yyextra->LexInput(buf, max_size); }

/* Include the set of tokens from the parser.  */
#include "cmCommandArgumentParserTokens.h"

/*--------------------------------------------------------------------------*/
%}

%option reentrant
%option noyywrap
%option nounput
%pointer
%s ESCAPES
%s NOESCAPES

%%

\$ENV\{ {
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2);
  return cal_ENVCURLY;
}

\$[A-Za-z0-9/_.+-]+\{ { 
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2); 
  return cal_NCURLY; 
} 

@[A-Za-z0-9/_.+-]+@ { 
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2); 
  return cal_ATNAME; 
} 

"${" {
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  yylvalp->str = yyextra->DCURLYVariable;
  return cal_DCURLY;
}

"}" {
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  yylvalp->str = yyextra->RCURLYVariable;
  return cal_RCURLY;
}

"@" {
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  yylvalp->str = yyextra->ATVariable;
  return cal_AT;
}

[A-Za-z0-9/_.+-]+ { 
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  return cal_NAME; 
}

<ESCAPES>\\. {
  if ( !yyextra->HandleEscapeSymbol(yylvalp, *(yytext+1)) )
    {
    return cal_ERROR;
    }
  return cal_SYMBOL; 
}

[^\${}\\@]+ { 
  //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
  yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  return cal_SYMBOL; 
}

"$" {
  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  yylvalp->str = yyextra->DOLLARVariable;
  return cal_DOLLAR; 
}

"{" {
  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  yylvalp->str = yyextra->LCURLYVariable;
  return cal_LCURLY; 
}

<ESCAPES>"\\" {
  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext)); 
  yylvalp->str = yyextra->BSLASHVariable;
  return cal_BSLASH; 
}

<NOESCAPES>"\\" {
  //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
  yylvalp->str = yyextra->BSLASHVariable;
  return cal_SYMBOL;
}

%%

/*--------------------------------------------------------------------------*/
void cmCommandArgument_SetupEscapes(yyscan_t yyscanner, bool noEscapes)
{
  /* Hack into the internal flex-generated scanner to set the state.  */
  struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
  if(noEscapes)
    {
    BEGIN(NOESCAPES);
    }
  else
    {
    BEGIN(ESCAPES);
    }
}