On 30.09.2016 10:03, daniel_sun wrote:
Hi Sergei,
I tried to add the statement to expression as an alternative, the
antlr4 failed to generate sources becuase of the error "error(119):
GroovyParser.g4::: The following sets of rules are mutually left-recursive
[statement, expression, statementExpression]".
you cannot add statement as an alternative to expression if a expression
is also a statement. If any statement should be also an expression, then
statement and expression have to be merged
Currenty the expression is quite huge, which is a potential cause of
performance issue. so if we try our best to treat statement as expression in
the future, the performance will be impacted somehow.
probably, yes
bye Jochen
