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Add support for // and /* */ comments

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This commit is contained in:
Dave Davenport 2016-12-11 18:25:47 +01:00
parent 95667e60d9
commit 8f8d296029
1 changed files with 24 additions and 3 deletions
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27
lexer/theme-lexer.l
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@ -1,4 +1,4 @@
%option noyywrap
%option noyywrap nounput batch debug
%{
#include <stdio.h>
@ -11,7 +11,28 @@ int yylex(void);
%}
%%
"//" {
int c;
while ((c = input()) != EOF)
if (c == '\n') {
break;
}
}
"/*" {
int c = 0, p;
int nesting_depth = 1;
while (nesting_depth) {
p = c;
c = input();
switch (c) {
case '*': if (p == '/') { c = 0; nesting_depth++; } break;
case '/': if (p == '*') { c = 0; nesting_depth--; } break;
case '\n': break;
case EOF: nesting_depth = 0; break;
default: ;
}
}
}
"\{" { return BOPEN;}
"\}" { return BCLOSE;}
":" { return PSEP; }
@ -36,7 +57,7 @@ int yylex(void);
#[0-9A-Fa-f]{6} {
union { unsigned int val; struct { unsigned char b,g,r,a;};} val;
val.val = (unsigned int)g_ascii_strtoull ( &yytext[1], NULL, 16);
yylval.colorval.alpha = 1.0;
yylval.colorval.alpha = 1.0;
yylval.colorval.red = val.r/255.0;
yylval.colorval.green = val.g/255.0;
yylval.colorval.blue = val.b/255.0;