[antlr-interest] Tree rewriting (filter=true, output=ast)

[Sam Barnett-Cormack]

As this compiles fine from the command-line tool, I'm going to assume
this is an ANTLR IDE problem... Edgar, any illumination on this?

Sam

Sam Barnett-Cormack wrote:

> On a separate note, trying to compile the tree grammar with these
> adjustments doesn't give me any antlr errors, but it does seem to
> produce a java exception. Here's the report output (generated by default
> by antlr-IDE in Eclipse):
> 
> ANTLR Grammar Report; Stats Version 4
> Grammar: ASN_1_tree_pass1
> Type: tree
> Target language: Java
> Output: AST
> Grammar option k: none
> Grammar option backtrack: false
> Rules: 5
> Productions: 5
> Decisions: 3
> Cyclic DFA decisions: 0
> LL(1) decisions: 1
> Min fixed k: -1
> Max fixed k: 5
> Average fixed k: 1.6666666666666667
> Standard deviation of fixed k: 3.055050463303893
> Min acyclic DFA states: 0
> Max acyclic DFA states: 15
> Average acyclic DFA states: 6.666666666666667
> Standard deviation of acyclic DFA states: 7.637626158259733
> Total acyclic DFA states: 20
> Min cyclic DFA states: 0
> Max cyclic DFA states: 0
> Average cyclic DFA states: 0.0
> Standard deviation of cyclic DFA states: 0.0
> Total cyclic DFA states: 0
> Vocabulary size: 170
> DFA creation time in ms: 14
> Number of semantic predicates found: 2
> Number of manual fixed lookahead k=value options: 0
> Number of nondeterministic decisions: 2
> Number of nondeterministic decisions resolved with predicates: 1
> Number of DFA conversions terminated early: 0
> Number of errors: 0
> Number of warnings: 0
> Number of infos: 0
> Number of syntactic predicates found: 0
> Decisions with syntactic predicates: 0
> Decision DFAs using syntactic predicates: 0
> Decisions with semantic predicates: 1
> Decision DFAs using semantic predicates: 0
> Backtracking report:
> Number of decisions that backtrack: 0
> 
> Grammar: ASN_1_tree_pass1
> Error creating resources for ASN_1. Cause java.lang.ClassCastException:
> org.antlr.stringtemplate.StringTemplate cannot be cast to java.util.List
> 
> 
> It's that bit at the bottom that bothers me. This should be ANTLR 3.1.2.
> 
> Sam
> 
> PS: I'm intrigued by the fact the k=-1 in some cases, though.
> 
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