riscv
/
yosys
mirror of https://github.com/YosysHQ/yosys.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Added updating of RTLIL::autoidx to ilang frontend

This commit is contained in:
Clifford Wolf 2014-01-03 17:51:05 +01:00
parent 03f0ab9de2
commit 8f11eaaca6
1 changed files with 23 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
frontends/ilang/lexer.l
View File

@ -25,6 +25,7 @@
%{
#include "kernel/rtlil.h"
#include "parser.tab.h"
void update_autoidx(const char *p);
%}
%option yylineno
@ -68,7 +69,7 @@
[a-z]+ { return TOK_INVALID; }
"\\"[^ \t\r\n]+ { rtlil_frontend_ilang_yylval.string = strdup(yytext); return TOK_ID; }
"$"[^ \t\r\n]+ { rtlil_frontend_ilang_yylval.string = strdup(yytext); return TOK_ID; }
"$"[^ \t\r\n]+ { rtlil_frontend_ilang_yylval.string = strdup(yytext); update_autoidx(yytext); return TOK_ID; }
"."[0-9]+ { rtlil_frontend_ilang_yylval.string = strdup(yytext); return TOK_ID; }
[0-9]+'[01xzm-]* { rtlil_frontend_ilang_yylval.string = strdup(yytext); return TOK_VALUE; }
@ -116,6 +117,27 @@
%%
void update_autoidx(const char *p)
{
if (*p != '$')
return;
while (*p) {
if (*(p++) != '$')
continue;
if ('0' <= *p && *p <= '9') {
const char *q = p;
while ('0' <= *q && *q <= '9')
q++;
if ((q - p) < 10) {
int idx = atoi(p);
if (idx > RTLIL::autoidx)
RTLIL::autoidx = idx;
}
}
}
}
// this is a hack to avoid the 'yyinput defined but not used' error msgs
void *rtlil_frontend_ilang_avoid_input_warnings() {
return (void*)&yyinput;