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36 /*! \cond \internal \file scanner.l
38 * Tokenizer for the selection language.
40 * \author Teemu Murtola <teemu.murtola@gmail.com>
41 * \ingroup module_selection
44 /*! \internal \file scanner.cpp
46 * Generated (from scanner.l by Flex) tokenizer for the selection language.
48 * \ingroup module_selection
51 #if !defined _gmx_sel_yyIN_HEADER
55 // Required before flex definitions, since it includes <stdint.h>.
56 // Otherwise, compilers not strictly C99 get macro redefinition errors,
57 // since flex defines INT32_MAX etc. in such cases.
58 #include "gromacs/utility/basedefinitions.h"
61 #include "gromacs/utility/cstringutil.h"
62 #include "gromacs/utility/stringutil.h"
66 #include "scanner_internal.h"
68 // This macro makes the actions a bit shorter, since nearly every action needs
70 #define ADD_TOKEN _gmx_sel_lexer_add_token(yylloc, yytext, yyleng, state)
72 // Set YY_BREAK to an empty value to avoid warnings (for the PGI compiler)
73 // when we have return statements followed by break. Instead, we add breaks
81 FRAC (([[:digit:]]*"."{DSEQ})|{DSEQ}".")
83 REAL (({FRAC}{EXP}?)|({DSEQ}{EXP}))
84 STRING (\"([^\"\\\n]|(\\\"))*\")
85 IDENTIFIER ([[:alpha:]][_[:alnum:]]*)
86 CMPOP (([<>]=?)|([!=]=))
92 %option prefix="_gmx_sel_yy"
93 %option header-file="scanner_flex.h"
95 %option never-interactive
104 gmx_sel_lexer_t *state = yyget_extra(yyscanner);
106 /* Return a token if one is pending */
107 retval = _gmx_sel_lexer_process_pending(yylval, yylloc, state);
112 /* Handle the start conditions for 'of' matching */
116 state->bMatchOf = false;
118 else if (state->bMatchBool)
121 state->bMatchBool = false;
123 else if (state->bCmdStart)
126 state->bCmdStart = false;
135 {INTEGER} { yylval->i = strtol(yytext, NULL, 10); ADD_TOKEN; return TOK_INT; }
136 {REAL} { yylval->r = strtod(yytext, NULL); ADD_TOKEN; return TOK_REAL; }
137 {STRING} { yylval->str = gmx_strndup(yytext+1, yyleng-2); ADD_TOKEN; return STR; }
139 \\\n { _gmx_sel_lexer_add_token(yylloc, " ", 1, state); break; }
141 if (yytext[0] == ';' || state->statusWriter != NULL)
143 state->pselstr = gmx::stripString(state->pselstr);
144 state->bCmdStart = true;
149 _gmx_sel_lexer_add_token(yylloc, " ", 1, state);
154 <cmdstart><<EOF>> { state->bCmdStart = true; yyterminate(); }
155 <<EOF>> { state->bCmdStart = true; return CMD_SEP; }
158 yes|on { ADD_TOKEN; yylval->i = 1; return TOK_INT; }
159 no|off { ADD_TOKEN; yylval->i = 0; return TOK_INT; }
161 group { ADD_TOKEN; return GROUP; }
162 to { ADD_TOKEN; return TO; }
163 <matchof>of { ADD_TOKEN; BEGIN(0); return OF; }
164 and|"&&" { ADD_TOKEN; return AND; }
165 or|"||" { ADD_TOKEN; return OR; }
166 xor { ADD_TOKEN; return XOR; }
167 not|"!" { ADD_TOKEN; return NOT; }
168 {CMPOP} { yylval->str = gmx_strndup(yytext, yyleng); ADD_TOKEN; return CMP_OP; }
170 {IDENTIFIER} { return _gmx_sel_lexer_process_identifier(yylval, yylloc, yytext, yyleng, state); }
172 [[:space:]]+ { _gmx_sel_lexer_add_token(yylloc, " ", 1, state); break; }
173 [_[:alnum:]]+ { yylval->str = gmx_strndup(yytext, yyleng); ADD_TOKEN; return STR; }
174 . { ADD_TOKEN; return yytext[0]; }