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feat: changes in Grammar and Parser so typeless Recs get recognised
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This commit is contained in:
Ruben 2024-06-06 12:06:28 +02:00
parent 4880527d4d
commit 7650813bb7
4 changed files with 31 additions and 3 deletions
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17
resources/bytecode/javFiles/SwitchInfered.jav Normal file
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@ -0,0 +1,17 @@
import java.lang.Integer;
import java.lang.Object;
import java.lang.Float;
public record Rec(Integer a, Object b) {}
public class SwitchInfered {
public main(o) {
return switch (o) {
case Rec(a, b) -> a + b;
case Rec(Integer a, Float b) -> a + 10;
case Rec(Integer a, Rec(Integer b, Integer c)) -> a + b + c;
case Integer i -> i;
default -> 0;
};
}
}

6
src/main/antlr4/de/dhbwstuttgart/parser/antlr/Java17Parser.g4
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@ -658,10 +658,12 @@ primaryPattern
recordPattern
: typeType recordStructurePattern identifier?
//| recordStructurePattern identifier?
;
typePattern
: variableModifier* typeType identifier
| variableModifier* identifier
;
recordStructurePattern
@ -717,10 +719,10 @@ switchLabeledRule
;
switchLabelCase
: CASE expressionList (ARROW | COLON) #labeledRuleExprList
| CASE NULL_LITERAL (ARROW | COLON) #labeledRuleNull
: CASE NULL_LITERAL (ARROW | COLON) #labeledRuleNull
| CASE pattern (ARROW | COLON) #labeledRulePattern
| DEFAULT (ARROW | COLON) #labeledRuleDefault
| CASE expressionList (ARROW | COLON) #labeledRuleExprList
;
// Java20

2
src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java
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@ -457,7 +457,7 @@ public class StatementGenerator {
case TPatternContext tPattern:
TypePatternContext typePattern = tPattern.typePattern();
var text = typePattern.identifier().getText();
var type = TypeGenerator.convert(typePattern.typeType(), reg, generics);
var type = typePattern.typeType() == null ? TypePlaceholder.fresh(typePattern.getStart()) : TypeGenerator.convert(typePattern.typeType(), reg, generics);
localVars.put(text, type);
return new FormalParameter(text, type, typePattern.getStart());
case RPatternContext rPattern:

9
src/test/java/TestComplete.java
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@ -673,6 +673,15 @@ public class TestComplete {
assertEquals(swtch.invoke(instance, "Some string"), 0);
}
@Ignore("Not implemented")
@Test
public void testSwitchInfered() throws Exception {
var classFiles = generateClassFiles(new ByteArrayClassLoader(), "SwitchInfered.jav");
var clazz = classFiles.get("SwitchInfered");
var instance = clazz.getDeclaredConstructor().newInstance();
var swtch = clazz.getDeclaredMethod("main", Object.class);
}
@Ignore("Not implemented")
@Test
public void testSwitch2() throws Exception {