On 2010-10-22 17:37, BLS wrote:
Why not creating a DLL/so based Lexer/Parser based on the existing DMD
front end.? It could be always up to date. Necessary Steps. functional
wrappers around C++ classes, Implementing the visitor pattern (AST),
create std.lex and std.parse..
my 2 cents
On 22/10/2010 00:01, Walter Bright wrote:
As we all know, tool support is important for D's success. Making tools
easier to build will help with that.
To that end, I think we need a lexer for the standard library -
std.lang.d.lex. It would be helpful in writing color syntax highlighting
filters, pretty printers, repl, doc generators, static analyzers, and
even D compilers.
It should:
1. support a range interface for its input, and a range interface for
its output
2. optionally not generate lexical errors, but just try to recover and
continue
3. optionally return comments and ddoc comments as tokens
4. the tokens should be a value type, not a reference type
5. generally follow along with the C++ one so that they can be
maintained in tandem
It can also serve as the basis for creating a javascript implementation
that can be embedded into web pages for syntax highlighting, and
eventually an std.lang.d.parse.
Anyone want to own this?
I think it would be better to create a lexer/parser in D and have it in
the standard library. Then one could begin the process of porting the
DMD frontend using this library. Then hopefully the DMD frontend will be
written in D and use this new library, being one code base and will
always be up to date.
--
/Jacob Carlborg
