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author | Clifford Wolf <clifford@clifford.at> | 2014-07-21 15:15:18 +0200 |
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committer | Clifford Wolf <clifford@clifford.at> | 2014-07-21 15:15:18 +0200 |
commit | 4147b55c233013dd861172f13d0b9669598d234c (patch) | |
tree | e28ea6e5e9a1f73a9890ef4e08ab9d174dd181bc /frontends/ilang | |
parent | e035f1d886b30329c1c061894146a5c6f92b4f7a (diff) | |
download | yosys-4147b55c233013dd861172f13d0b9669598d234c.tar.gz yosys-4147b55c233013dd861172f13d0b9669598d234c.tar.bz2 yosys-4147b55c233013dd861172f13d0b9669598d234c.zip |
Added "autoidx" statement to ilang file format
Diffstat (limited to 'frontends/ilang')
-rw-r--r-- | frontends/ilang/lexer.l | 27 | ||||
-rw-r--r-- | frontends/ilang/parser.y | 8 |
2 files changed, 10 insertions, 25 deletions
diff --git a/frontends/ilang/lexer.l b/frontends/ilang/lexer.l index 6557f98ab..c40b81af8 100644 --- a/frontends/ilang/lexer.l +++ b/frontends/ilang/lexer.l @@ -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; diff --git a/frontends/ilang/parser.y b/frontends/ilang/parser.y index 6b41b0873..d8ecf37b7 100644 --- a/frontends/ilang/parser.y +++ b/frontends/ilang/parser.y @@ -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; |