[antlr-interest] java.tree.g #(QUESTION expr expr expr)

[rustydstone]

Hi,

The following is slightly modified grammar from java.g and java.tree.g

conditionalExpression
	: logicalOrExpression 
        ( QUESTION^ conditionalExpression COLON! conditionalExpression )?
	;

#(QUESTION q1:. q2:. q3:.)

When expression "(true || false)? 1 + 1 : 0 + 0" is processed the
following q1, q2 and q3 ASTs are received (printed using toStringList()):

q1 ( || true false ) ( + 1 1 ) ( + 0 0 )
q2 ( + 1 1 ) ( + 0 0 )
q3 ( + 0 0 )

Why does q1 contain q2 and q3? Why does q2 contain q3? I somehow
expected that the output would be like the following:
q1 ( || true false )
q2 ( + 1 1 )
q3 ( + 0 0 )

Any ideas? Thanks



 

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