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Added proper === and !== support in constant expressions

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This commit is contained in:
Clifford Wolf 2013-12-27 13:50:08 +01:00
parent 11ffa78677
commit ecc30255ba
9 changed files with 79 additions and 15 deletions
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4
frontends/verilog/lexer.l
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@ -232,8 +232,8 @@ supply1 { return TOK_SUPPLY1; }
"<=" { return OP_LE; }
">=" { return OP_GE; }
"===" { return OP_EQ; }
"!==" { return OP_NE; }
"===" { return OP_EQX; }
"!==" { return OP_NEX; }
"~&" { return OP_NAND; }
"~|" { return OP_NOR; }

10
frontends/verilog/parser.y
View file

@ -117,7 +117,7 @@ static void free_attr(std::map<std::string, AstNode*> *al)
%left '|' OP_NOR
%left '^' OP_XNOR
%left '&' OP_NAND
%left OP_EQ OP_NE
%left OP_EQ OP_NE OP_EQX OP_NEX
%left '<' OP_LE OP_GE '>'
%left OP_SHL OP_SHR OP_SSHL OP_SSHR
%left '+' '-'
@ -1161,6 +1161,14 @@ basic_expr:
$$ = new AstNode(AST_NE, $1, $4);
append_attr($$, $3);
} |
basic_expr OP_EQX attr basic_expr {
$$ = new AstNode(AST_EQX, $1, $4);
append_attr($$, $3);
} |
basic_expr OP_NEX attr basic_expr {
$$ = new AstNode(AST_NEX, $1, $4);
append_attr($$, $3);
} |
basic_expr OP_GE attr basic_expr {
$$ = new AstNode(AST_GE, $1, $4);
append_attr($$, $3);