[antlr-interest] Understanding C++ parser, CPP_parser.g

[David Wigg]

As the latest author of this parser I can help Keith Pincombe 
off-list.

Can I assume Keith you are using version 3.00 of July 2004?

The only types of symbols actually saved (in CPPSymbol.hpp) are 
those required for parsing. However, other fundamental types are 
available in "id_expression" where a call to (for example) 
myCode_id_expression could be inserted to pick up variable names 
and their types (from "_ts").

I agree it would be nice to save the types of variables in 
CPPSymbol.hpp as well. One day?

I look forward to hearing how you get on with your problem Keith.

David.

Message: 6
Date: Sun, 20 Mar 2005 14:11:48 +0000
From: Keith Pincombe <pincombe at gmail.com>
Subject: [antlr-interest] understanding CPP_PARSER.g
To: antlr-interest at antlr.org
Message-ID: <a86d1c40050320061111944030 at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Hi,

If anyone has used CPP_PARSER.g i would love to ask you some 
questions as i am really struggling to use it, my main problem 
is working out how to access the information that the parser has 
discovered, more specifically what type of variable has been 
discovered.

I think this is covered in the grammar below but the more i look 
at it the more i don't think its in the right place, the more i 
look into this the more confused i am getting if someone could 
help i would be very grateful.

simple_type_specifier returns [CPPParser::TypeSpecifier ts]
{char *s;
ts = tsInvalid;}
: ( {qualifiedItemIsOneOf(qiType|qiCtor)}?
s = qualified_type {ts=tsTYPEID;}
|
( "char" {ts |= tsCHAR;}
| "wchar_t" {ts |= tsWCHAR_T;}
| "bool" {ts |= tsBOOL;}
| "short" {ts |= tsSHORT;}
| "int" {ts |= tsINT;}
| ("_int64"|"__int64") {ts |= tsLONG;}
| "__w64" {ts |= tsLONG;}
| "long" {ts |= tsLONG;}
| "signed" {ts |= tsSIGNED;}
| "unsigned" {ts |= tsUNSIGNED;}
| "float" {ts |= tsFLOAT;}
| "double" {ts |= tsDOUBLE;}
| "void" {ts |= tsVOID;}
| ("_declspec"|"__declspec") LPAREN ID RPAREN
)+
|
// Fix towards allowing us to parse *.cpp files directly
(qualified_type qualified_id)=> s = qualified_type {ts=tsTYPEID;}
{printf("simple_type_specifier third option entered\n");}
)
;