I am trying to learn ANTLR. I tried to invoke ANTLR v3.3 from
command line (java -cp antlr-3.3-complete.jar org.antlr.Tool T.g) on
the T.g, and found the following error message:
error(10): internal error: Exception T.g:5:64: unexpected char:
'e'@org.antlr.grammar.v2.ANTLRLexer.nextToken(ANTLRLexer.java:346):
unexpected stream error from parsing T.g
When I open T.g in AntlrWorks 1.4.2 and select any rule I get the following
error message:
Cannot display rule "X" because start state not found
However, the content of T.g is taken from page 29 of the book "The
Definite ANTLR Reference: Building Domain specific Languages, by Terence
Parr, 2007". T.g simply contains the following:
grammar T;
/** Match things like "call foo;" */
r : 'call' ID ';' {System.out.println("invoke "+$ID.text);} ;
ID: 'a'..'z'+ ;
WS: (' '|'\n'|'\r')+ {$channel=HIDDEN;} ; // ignore whitespace
My Question is, how can I resolve this issue, and what is start state?
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