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Added "autoidx" statement to ilang file format

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This commit is contained in:
Clifford Wolf 2014-07-21 15:15:18 +02:00
parent e035f1d886
commit 4147b55c23
3 changed files with 24 additions and 26 deletions
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27
frontends/ilang/lexer.l
View file

@ -31,7 +31,6 @@
#include "kernel/rtlil.h"
#include "parser.tab.h"
void update_autoidx(const char *p);
%}
@ -44,6 +43,7 @@ void update_autoidx(const char *p);
%%
"autoidx" { return TOK_AUTOIDX; }
"module" { return TOK_MODULE; }
"attribute" { return TOK_ATTRIBUTE; }
"parameter" { return TOK_PARAMETER; }
@ -76,11 +76,11 @@ void update_autoidx(const char *p);
[a-z]+ { return TOK_INVALID; }
"\\"[^ \t\r\n]+ { rtlil_frontend_ilang_yylval.string = strdup(yytext); return TOK_ID; }
"$"[^ \t\r\n]+ { rtlil_frontend_ilang_yylval.string = strdup(yytext); update_autoidx(yytext); return TOK_ID; }
"$"[^ \t\r\n]+ { rtlil_frontend_ilang_yylval.string = strdup(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; }
[0-9]+ { rtlil_frontend_ilang_yylval.integer = atoi(yytext); return TOK_INT; }
-?[0-9]+ { rtlil_frontend_ilang_yylval.integer = atoi(yytext); return TOK_INT; }
\" { BEGIN(STRING); }
<STRING>\\. { yymore(); }
@ -124,27 +124,6 @@ void update_autoidx(const char *p);
%%
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+1;
}
}
}
}
// this is a hack to avoid the 'yyinput defined but not used' error msgs
void *rtlil_frontend_ilang_avoid_input_warnings() {
return (void*)&yyinput;

8
frontends/ilang/parser.y
View file

@ -50,7 +50,7 @@ using namespace ILANG_FRONTEND;
%token <string> TOK_ID TOK_VALUE TOK_STRING
%token <integer> TOK_INT
%token TOK_MODULE TOK_WIRE TOK_WIDTH TOK_INPUT TOK_OUTPUT TOK_INOUT
%token TOK_AUTOIDX TOK_MODULE TOK_WIRE TOK_WIDTH TOK_INPUT TOK_OUTPUT TOK_INOUT
%token TOK_CELL TOK_CONNECT TOK_SWITCH TOK_CASE TOK_ASSIGN TOK_SYNC
%token TOK_LOW TOK_HIGH TOK_POSEDGE TOK_NEGEDGE TOK_EDGE TOK_ALWAYS TOK_INIT
%token TOK_UPDATE TOK_PROCESS TOK_END TOK_INVALID TOK_EOL TOK_OFFSET
@ -82,6 +82,7 @@ optional_eol:
design:
design module |
design attr_stmt |
design autoidx_stmt |
/* empty */;
module:
@ -113,6 +114,11 @@ attr_stmt:
free($2);
};
autoidx_stmt:
TOK_AUTOIDX TOK_INT EOL {
RTLIL::autoidx = std::max(RTLIL::autoidx, $2);
};
wire_stmt:
TOK_WIRE {
current_wire = new RTLIL::Wire;