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Handle escaped characters in a SDF identifier. 

This patch adds the ability to parse a SDF identifier that contains
escaped characters.
This commit is contained in:
Cary R 2010-11-12 18:32:56 -08:00 committed by Stephen Williams
parent 33f53c3ee4
commit 4469b08d3e
1 changed files with 14 additions and 2 deletions
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16
vpi/sdf_lexor.lex
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@ -85,7 +85,7 @@ static int yywrap(void)
return REAL_NUMBER; return REAL_NUMBER;
} }
[a-zA-Z_][a-zA-Z0-9$_]* { ([a-zA-Z_]|(\\[^ \t\b\f\r\n]))([a-zA-Z0-9$_]|(\\[^ \t\b\f\r\n]))* {
return lookup_keyword(yytext); return lookup_keyword(yytext);
} }
@ -154,12 +154,24 @@ void stop_edge_id(void)
static int lookup_keyword(const char*text) static int lookup_keyword(const char*text)
{ {
int idx; unsigned idx, len, skip;
for (idx = 0 ; keywords[idx].name ; idx += 1) { for (idx = 0 ; keywords[idx].name ; idx += 1) {
if (strcasecmp(text, keywords[idx].name) == 0) if (strcasecmp(text, keywords[idx].name) == 0)
return keywords[idx].code; return keywords[idx].code;
} }
/* Process any escaped characters. */
skip = 0;
len = strlen(yytext);
for (idx = 0; idx < len; idx += 1) {
if (yytext[idx] == '\\') {
skip += 1;
idx += 1;
}
yytext[idx-skip] = yytext[idx];
}
yytext[idx-skip] = 0;
yylval.string_val = strdup(yytext); yylval.string_val = strdup(yytext);
return IDENTIFIER; return IDENTIFIER;
} }