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add option -exact-ambiguities to TestRig

This commit is contained in:
Terence Parr 2012-11-03 16:40:23 -07:00
parent baa4dcf1b9
commit 400b58d4a0
2 changed files with 13 additions and 3 deletions
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4
CHANGES.txt
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@ -1,5 +1,9 @@
ANTLR v4 Honey Badger
November 3, 2012
* add option -exact-ambiguities to TestRig
October 29, 2012
* Sam fixes nongreedy more.

12
runtime/Java/src/org/antlr/v4/runtime/misc/TestRig.java
View File

@ -36,7 +36,6 @@ import org.antlr.v4.runtime.DiagnosticErrorListener;
import org.antlr.v4.runtime.Lexer;
import org.antlr.v4.runtime.Parser;
import org.antlr.v4.runtime.ParserRuleContext;
import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.TokenStream;
import org.antlr.v4.runtime.atn.PredictionMode;
@ -75,6 +74,7 @@ public class TestRig {
static boolean diagnostics = false;
static String encoding = null;
static boolean SLL = false;
static boolean exactAmbigDetection = false;
public static final String LEXER_START_RULE_NAME = "tokens";
@ -83,7 +83,7 @@ public class TestRig {
if ( args.length < 2 ) {
System.err.println("java org.antlr.v4.runtime.misc.TestRig GrammarName startRuleName\n" +
" [-tokens] [-tree] [-gui] [-ps file.ps] [-encoding encodingname]\n" +
" [-trace] [-diagnostics] [-SLL]\n"+
" [-trace] [-diagnostics] [-SLL] [-exact-ambiguities]\n"+
" [input-filename(s)]");
System.err.println("Use startRuleName='tokens' if GrammarName is a lexer grammar.");
System.err.println("Omitting input-filename makes rig read from stdin.");
@ -116,6 +116,9 @@ public class TestRig {
else if ( arg.equals("-SLL") ) {
SLL = true;
}
else if ( arg.equals("-exact-ambiguities") ) {
exactAmbigDetection = true;
}
else if ( arg.equals("-diagnostics") ) {
diagnostics = true;
}
@ -224,7 +227,10 @@ public class TestRig {
parser.setBuildParseTree(true);
}
if ( SLL ) {
if ( exactAmbigDetection ) {
parser.getInterpreter().setPredictionMode(PredictionMode.LL_EXACT_AMBIG_DETECTION);
}
if ( SLL ) { // overrides exactAmbigDetection
parser.getInterpreter().setPredictionMode(PredictionMode.SLL);
}