[antlr-interest] Parse rule to add multiple homogeneous branches under a root node?

[Peter Bosch]

Okay, I've tried to boil it down to a simple test case that illustrates
(probably in my parse rule) what I'm doing wrong. Target is C#.

 

//-----------------------------

// TreeTestInput.txt

Branch1
Branch2
Branch3

 

//-----------------------------

// Desired output:

ROOT

   Branch1

   Branch2

   Branch3

//-----------------------------

// Actual output:

ROOT

   Branch3

 

//-----------------------------

// TreeTest.g

grammar TreeTest;

 

options {

  language=CSharp3;

  output=AST;

}

 

tokens {

    ROOT;

}

 

public parse

    :  ( r=BRANCH )* EOF -> ^(ROOT $r*)

    ;

    

BRANCH

       :  'Branch' ('0'..'9')

       ;

              

EOL : ('\r'? '\n') {$channel=Hidden;} ; 

WS  : (' '|'\t'|'\f'| EOL)+ {$channel=Hidden;} ;

 

 

Peter Bosch
Highpoint Software Systems
E-mail :  <mailto:pbosch at highpointsoftware.com> pbosch at highpointsoftware.com
Phone : 262-893-5400
P-Mail : S42 W27451 Oak Grove Lane Waukesha, WI, 53189
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