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V0.8: `timescale can not be inside module definition. 

This patch mirrors what was done in development to complain
about a `timescale inside of a module definition.
This commit is contained in:
Cary R 2008-11-21 15:00:35 -08:00 committed by Stephen Williams
parent f112b77d3b
commit e8bb9b1f76
1 changed files with 25 additions and 3 deletions
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28
lexor.lex
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@ -92,6 +92,7 @@ static int dec_buf_div2(char *buf);
static void process_timescale(const char*txt); static void process_timescale(const char*txt);
static int comment_enter; static int comment_enter;
static bool in_module = false;
%} %}
%x CCOMMENT %x CCOMMENT
@ -215,14 +216,29 @@ W [ \t\b\f\r]+
[a-zA-Z_][a-zA-Z0-9$_]* { [a-zA-Z_][a-zA-Z0-9$_]* {
int rc = lexor_keyword_code(yytext, yyleng); int rc = lexor_keyword_code(yytext, yyleng);
if (rc == IDENTIFIER) { switch (rc) {
case IDENTIFIER:
yylval.text = strdup(yytext); yylval.text = strdup(yytext);
if (strncmp(yylval.text,"PATHPULSE$", 10) == 0) if (strncmp(yylval.text,"PATHPULSE$", 10) == 0)
rc = PATHPULSE_IDENTIFIER; rc = PATHPULSE_IDENTIFIER;
} else if (rc == K_edge) { break;
case K_edge:
BEGIN(EDGES); BEGIN(EDGES);
} else { break;
case K_module:
case K_macromodule:
in_module = true;
break;
case K_endmodule:
in_module = false;
break;
default:
yylval.text = 0; yylval.text = 0;
break;
} }
return rc; return rc;
@ -281,6 +297,12 @@ W [ \t\b\f\r]+
^{W}?`timescale { BEGIN(PPTIMESCALE); } ^{W}?`timescale { BEGIN(PPTIMESCALE); }
<PPTIMESCALE>.* { process_timescale(yytext); } <PPTIMESCALE>.* { process_timescale(yytext); }
<PPTIMESCALE>\n { <PPTIMESCALE>\n {
if (in_module) {
cerr << yylloc.text << ":" << yylloc.first_line << ": error: "
"`timescale directive can not be inside a module "
"definition." << endl;
error_count += 1;
}
yylloc.first_line += 1; yylloc.first_line += 1;
BEGIN(0); } BEGIN(0); }