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Keep strings as strings in const ternary and concat

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This commit is contained in:
Clifford Wolf 2013-12-05 13:26:17 +01:00
parent e935bb6eda
commit 891e4b5b0d
3 changed files with 25 additions and 5 deletions
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14
frontends/ast/ast.cc
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@ -171,6 +171,7 @@ AstNode::AstNode(AstNodeType type, AstNode *child1, AstNode *child2)
is_output = false;
is_reg = false;
is_signed = false;
is_string = false;
range_valid = false;
port_id = 0;
range_left = -1;
@ -591,6 +592,8 @@ bool AstNode::operator==(const AstNode &other) const
return false;
if (is_signed != other.is_signed)
return false;
if (is_string != other.is_string)
return false;
if (range_valid != other.range_valid)
return false;
if (port_id != other.port_id)
@ -658,6 +661,14 @@ AstNode *AstNode::mkconst_bits(const std::vector<RTLIL::State> &v, bool is_signe
return node;
}
// create an AST node for a constant (using a string in bit vector form as value)
AstNode *AstNode::mkconst_str(const std::vector<RTLIL::State> &v)
{
AstNode *node = mkconst_str(RTLIL::Const(v).decode_string());
log_assert(node->bits == v);
return node;
}
// create an AST node for a constant (using a string as value)
AstNode *AstNode::mkconst_str(const std::string &str)
{
@ -671,6 +682,7 @@ AstNode *AstNode::mkconst_str(const std::string &str)
}
}
AstNode *node = AstNode::mkconst_bits(data, false);
node->is_string = true;
node->str = str;
return node;
}
@ -702,7 +714,7 @@ RTLIL::Const AstNode::asAttrConst()
RTLIL::Const val;
val.bits = bits;
if (!str.empty()) {
if (is_string) {
val.flags |= RTLIL::CONST_FLAG_STRING;
log_assert(val.decode_string() == str);
}