[antlr-interest] How to Resolve these problems
mzukowski at yci.com
mzukowski at yci.com
Tue Jun 10 08:13:25 PDT 2003
You don't have enough information here for us to help you. Sample input and
all the rules which are used would be helpful.
Also try running antlr.Tool with -traceParser and -traceLexer to get a
better idea of what is going on.
Monty
-----Original Message-----
From: v_vivekg [mailto:v_vivekg at yahoo.com]
Sent: Tuesday, June 10, 2003 12:20 AM
To: antlr-interest at yahoogroups.com
Subject: [antlr-interest] How to Resolve these problems
Hi,
I have two problems which need to be resolved.
1) There is error reported if an identifier(upper or lower case) matches
with a keyword e.g.
symbol returns [String s]
{s="";}
: (up:UPPER { s = up.getText();}
| lid:LOWER { s = lid.getText();})
;
If this rule matches UPPER or LOWER with a keyword then there is an error
'unexpected Token '.
2) Not everything is consumed by inverting a rule, e.g.
| (UPPER "MACRO" ASSIGN_OP BEGIN_KW (~(WS))* END_KW)=> UPPER "MACRO"
ASSIGN_OP BEGIN_KW (~(WS))* END_KW
WS is white space skipping ' ' and new lines.The above rule fails when a
double quotes followed by some character is encountered(eg at "{" it says
expecting '"' found '{'), I think it problem with a character set.
Kindly help to resolve these problems.
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