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%{
#include "genfun.h"
#if 0
#define PUSH(s) \
yy_push_state(s); \
generateNewLine(); \
generate_normal("<!-- PUSH " #s " -->"); \
generateNewLine();
#define POP(s) \
yy_pop_state(); \
generateNewLine(); \
generate_normal("<!-- POP " #s " -->"); \
generateNewLine();
#else
#define PUSH(s) yy_push_state(s);
#define POP(s) yy_pop_state();
#endif
#define TRIMNORMAL(n)\
do{ if(yyleng > n){\
yytext[yyleng - n]= '\0';\
generate_normal(yytext);\
}}while(0)
%}
%option stack nomain yylineno noyywrap nounput
%option prefix="flex_scanner_"
%x verbatim_code options name_def sc_decl in_string sect2 pattern
%x comment sect2prolog start_cond sect3
NL \r?\n
OPTWS [[:blank:]]*
WS [[:blank:]]
NOT_WS [^[:blank:]\r\n]
NAME [[:alpha:]_][[:alnum:]_-]*
LEXOPT [aceknopr]
REGEXOP [\*\.\+\?\/\^\(\|\)\]\[]
NUMESCSEQ \\(([0-7]{1,3})|x([[:xdigit:]]{1,2}))
CCL1 alnum|alpha|ascii|blank|cntrl|digit|graph
CCL2 lower|print|punct|space|upper|xdigit
CCL {CCL1}|{CCL2}
%%
int bracelevel=0;
<INITIAL>{
^"%{" generatePreProc(yytext); PUSH(verbatim_code);
^"%"[sx] generatePreProc(yytext); PUSH(sc_decl);
^"%option" generatePreProc(yytext); PUSH(options);
^"%array" |
^"%pointer" |
^"%"{LEXOPT} generatePreProc(yytext);
^{NAME} generateFunction(yytext); PUSH(name_def);
^"%%" generatePreProc(yytext); BEGIN(sect2);
"/*" startComment(yytext); PUSH(comment);
{NL} generateNewLine();
[^\n_[:alpha:]%\/]+ generate_normal(yytext);
. generate_normal(yytext);
}
<verbatim_code>{
^"%}" generatePreProc(yytext); POP(verbatim_code);
[^\r\n%]+ generate_normal(yytext);
[%\r] generate_normal(yytext);
{NL} generateNewLine();
}
<options>{
{WS}+ generate_normal(yytext);
{NAME} generateKeyWord(yytext);
"=" generateSymbol(yytext);
\"[^\"\n]*\" {
startString("\"");
if(yyleng> 2){
yytext[yyleng-1] = '\0';
generateString(yytext+1);
}
endString("\"");
}
{NL} generateNewLine(); POP(options);
. generate_normal(yytext);
}
<sc_decl>{
{WS}+ generate_normal(yytext);
{NAME} generateFunction(yytext);
{NL} generateNewLine(); POP(sc_decl);
. generate_normal(yytext);
}
<name_def>{
{WS}+ generate_normal(yytext);
{NL} generateNewLine(); yy_set_bol(1);POP(name_def);
. yyless(0); PUSH(pattern);
}
<pattern>{
{WS}+ generate_normal(yytext); POP(pattern);
{NL} {
yy_set_bol(1);
yyless(0);
POP(pattern);
}
"{"{NAME}"}" {
generateSymbol("{");
yytext[yyleng-1] = '\0';
generateFunction(yytext+1);
generateSymbol("}");
}
"\"" startString(yytext); PUSH(in_string);
{REGEXOP} generateSymbol(yytext);
"<<EOF>>" generateKeyWord(yytext);
"[:"({CCL})":]" {
generateSymbol("[:");
yytext[yyleng-2] = '\0';
generateKeyWord(yytext+2);
generateSymbol(":]");
}
{NUMESCSEQ} generateNumber(yytext);
\\[^\n] generatePreProc(yytext);
. generate_normal(yytext);
}
<in_string>{
"\"" endString(yytext); POP(in_string);
{NUMESCSEQ} generateNumber(yytext);
\\[^\n] generatePreProc(yytext);
{NL} generateNewLine(); POP(in_string); /* actually an error */
. generateString(yytext);
}
<comment>{
"*/" endComment(yytext); POP(comment);
[^*\n]+ generateComment(yytext);
"*" generateComment(yytext);
{NL} generateNewLine();
}
<sect2prolog>{
^"%{".* ++bracelevel; generatePreProc(yytext);
^"%}".* --bracelevel; generatePreProc(yytext);
^{WS}.+ generate_normal(yytext);
^{NOT_WS}.* {
if ( bracelevel <= 0 ) {
yyless( 0 );
yy_set_bol( 1 );
BEGIN(sect2);
}
else
generate_normal(yytext);
}
{NL} generateNewLine();
.+ generate_normal(yytext);
}
<sect2>{
"<" generatePreProc(yytext); PUSH(start_cond);
"/*" startComment(yytext); PUSH(comment);
{WS}+ generate_normal(yytext);
^"%%" generatePreProc(yytext); BEGIN(sect3);
{NL} generateNewLine();
\} generate_normal(yytext);
. yyless(0); PUSH(pattern);
}
<start_cond>{
">" generatePreProc(yytext); POP(start_cond);
"," generate_normal(yytext);
{NAME}|"*" generateFunction(yytext);
{NL} generateNewLine();
[^[:alpha:]_\n,>\*]+ generate_normal(yytext);
}
<sect3>{
{NL} generateNewLine();
.+ generate_normal(yytext);
}
%%
/* vim:set ft=flex expandtab cindent tabstop=4 softtabstop=4 shiftwidth=4 textwidth=0: */
|
