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added test cases for cardinalities in context

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see a5df42591b
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overflowerror 2022-01-15 15:31:27 +01:00
parent a5df42591b
commit a1b9bb9a59
1 changed files with 60 additions and 0 deletions
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60
org.eclipse.xtext.tests/src/org/eclipse/xtext/xtext/generator/hoisting/HoistingProcessorTest.java
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@ -1019,4 +1019,64 @@ public class HoistingProcessorTest extends AbstractXtextTests {
assertTrue(guard.hasTerminal()); assertTrue(guard.hasTerminal());
assertEquals("((p0) || (p1))", guard.render()); assertEquals("((p0) || (p1))", guard.render());
} }
@Test
public void testCardinalitiesDirectContext_expectCorrectResult() throws Exception {
// @formatter:off
String model =
MODEL_PREAMBLE +
"S: {S} a+=A+ ;\n" +
"A: $$ p0 $$?=> 'a' \n" +
" | $$ p1 $$?=> 'a' 'b' ;\n";
// @formatter:off
XtextResource resource = getResourceFromString(model);
Grammar grammar = ((Grammar) resource.getContents().get(0));
hoistingProcessor.init(grammar);
AbstractRule rule = getRule(grammar, "A");
HoistingGuard guard = hoistingProcessor.findHoistingGuard(rule.getAlternatives());
assertFalse(guard.isTrivial());
assertTrue(guard.hasTerminal());
assertEquals("(((" + getSyntaxForKeywordToken("a", 2) + " && " + getSyntaxForEofToken(2) + ") || (p0)) && (" + getSyntaxForKeywordToken("b", 2) + " || (p1)))", guard.render());
}
@Test
public void testCardinalitiesInGroupContext_expectCorrectResult() throws Exception {
// @formatter:off
String model =
MODEL_PREAMBLE +
"S: {S} ('a' a+=A)+ ;\n" +
"A: $$ p0 $$?=> 'b' \n" +
" | $$ p1 $$?=> 'b' 'b' ;\n";
// @formatter:off
XtextResource resource = getResourceFromString(model);
Grammar grammar = ((Grammar) resource.getContents().get(0));
hoistingProcessor.init(grammar);
AbstractRule rule = getRule(grammar, "A");
HoistingGuard guard = hoistingProcessor.findHoistingGuard(rule.getAlternatives());
assertFalse(guard.isTrivial());
assertTrue(guard.hasTerminal());
assertEquals("(((" + getSyntaxForKeywordToken("a", 2) + " && " + getSyntaxForEofToken(2) + ") || (p0)) && (" + getSyntaxForKeywordToken("b", 2) + " || (p1)))", guard.render());
}
@Test
public void testCardinalitiesIndirectContext_expectCorrectResult() throws Exception {
// @formatter:off
String model =
MODEL_PREAMBLE +
"S: {S} (a+=A)+ ;\n" +
"A: $$ p0 $$?=> 'a' \n" +
" | $$ p1 $$?=> 'a' 'b' ;\n";
// @formatter:off
XtextResource resource = getResourceFromString(model);
Grammar grammar = ((Grammar) resource.getContents().get(0));
hoistingProcessor.init(grammar);
AbstractRule rule = getRule(grammar, "A");
HoistingGuard guard = hoistingProcessor.findHoistingGuard(rule.getAlternatives());
assertFalse(guard.isTrivial());
assertTrue(guard.hasTerminal());
assertEquals("(((" + getSyntaxForKeywordToken("a", 2) + " && " + getSyntaxForEofToken(2) + ") || (p0)) && (" + getSyntaxForKeywordToken("b", 2) + " || (p1)))", guard.render());
}
} }