mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-04-14 21:08:47 +00:00
Code Activity

Factor parse_vector_range out into its own function.

Browse source 
This also fixes the parsing a bit. It was consuming 1 fewer token than
required.
This commit is contained in:
Sean Luchen 2025-03-31 10:46:18 -07:00
parent 0a6d9f4dc9
commit ac1033ecd5
2 changed files with 44 additions and 37 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

80
passes/techmap/libparse.cc
View file

@ -358,6 +358,48 @@ void LibertyParser::report_unexpected_token(int tok)
}
}
// FIXME: the AST needs to be extended to store
// these vector ranges.
int LibertyParser::parse_vector_range(int tok)
{
// parse vector range [A] or [A:B]
std::string arg;
tok = lexer(arg);
if (tok != 'v')
{
// expected a vector array index
error("Expected a number.");
}
else
{
// fixme: check for number A
}
tok = lexer(arg);
// optionally check for : in case of [A:B]
// if it isn't we just expect ']'
// as we have [A]
if (tok == ':')
{
tok = lexer(arg);
if (tok != 'v')
{
// expected a vector array index
error("Expected a number.");
}
else
{
// fixme: check for number B
tok = lexer(arg);
}
}
// expect a closing bracket of array range
if (tok != ']')
{
error("Expected ']' on array range.");
}
return lexer(arg);
}
LibertyAst *LibertyParser::parse()
{
std::string str;
@ -425,45 +467,9 @@ LibertyAst *LibertyParser::parse()
if (tok == ')')
break;
// FIXME: the AST needs to be extended to store
// these vector ranges.
if (tok == '[')
{
// parse vector range [A] or [A:B]
std::string arg;
tok = lexer(arg);
if (tok != 'v')
{
// expected a vector array index
error("Expected a number.");
}
else
{
// fixme: check for number A
}
tok = lexer(arg);
// optionally check for : in case of [A:B]
// if it isn't we just expect ']'
// as we have [A]
if (tok == ':')
{
tok = lexer(arg);
if (tok != 'v')
{
// expected a vector array index
error("Expected a number.");
}
else
{
// fixme: check for number B
tok = lexer(arg);
}
}
// expect a closing bracket of array range
if (tok != ']')
{
error("Expected ']' on array range.");
}
tok = parse_vector_range(tok);
continue;
}
if (tok != 'v') {

1
passes/techmap/libparse.h
View file

@ -106,6 +106,7 @@ namespace Yosys
int lexer(std::string &str);
void report_unexpected_token(int tok);
int parse_vector_range(int tok);
LibertyAst *parse();
void error() const;
void error(const std::string &str) const;