jasder
/
antlr
1
0
Fork 1
Code Issues Pull Requests Releases 1 Wiki Activity

more tests 

[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9103]
This commit is contained in:
parrt 2011-10-03 11:04:01 -08:00
parent 48e292dcdd
commit 473e56d59f
2 changed files with 27 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
runtime/Java/src/org/antlr/v4/runtime/DefaultANTLRErrorStrategy.java
View File

@ -1,6 +1,8 @@
package org.antlr.v4.runtime;
import org.antlr.v4.runtime.atn.*;
import org.antlr.v4.runtime.atn.ATN;
import org.antlr.v4.runtime.atn.ATNState;
import org.antlr.v4.runtime.atn.RuleTransition;
import org.antlr.v4.runtime.misc.IntervalSet;
/** This is the default error handling mechanism for ANTLR parsers
@ -97,7 +99,8 @@ public class DefaultANTLRErrorStrategy implements ANTLRErrorStrategy {
endErrorCondition();
return;
}
recoverInline(recognizer);
reportUnwantedToken(recognizer);
consumeUntil(recognizer, expecting);
}
public void reportNoViableAlternative(BaseRecognizer recognizer,

22
tool/test/org/antlr/v4/test/TestParseErrors.java
View File

@ -150,6 +150,16 @@ public class TestParseErrors extends BaseTest {
assertEquals(expecting, result);
}
@Test public void testMultiTokenDeletionBeforeLoop() throws Exception {
String grammar =
"grammar T;\n" +
"a : 'a' 'b'* 'c';";
String found = execParser("T.g", grammar, "TParser", "TLexer", "a", "aacabc", false);
String expecting = "line 1:1 extraneous input 'a' expecting {'b', 'c'}\n";
String result = stderrDuringParse;
assertEquals(expecting, result);
}
@Test public void testSingleTokenDeletionDuringLoop() throws Exception {
String grammar =
"grammar T;\n" +
@ -160,6 +170,18 @@ public class TestParseErrors extends BaseTest {
assertEquals(expecting, result);
}
@Test public void testMultiTokenDeletionDuringLoop() throws Exception {
String grammar =
"grammar T;\n" +
"a : 'a' 'b'* 'c' ;";
String found = execParser("T.g", grammar, "TParser", "TLexer", "a", "abaaababc", false);
String expecting =
"line 1:2 extraneous input 'a' expecting {'b', 'c'}\n" +
"line 1:6 extraneous input 'a' expecting {'b', 'c'}\n";
String result = stderrDuringParse;
assertEquals(expecting, result);
}
@Test public void testLL1ErrorInfo() throws Exception {
String grammar =
"grammar T;\n" +