(WIP) add filter

jacoco · Jun 5, 2023 · bc71921 · bc71921
1 parent 0ca61db
commit bc71921
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Showing 2 changed files with 33 additions and 1 deletion.
diff --git a/org.jacoco.core/src/org/jacoco/core/internal/analysis/filter/Filters.java b/org.jacoco.core/src/org/jacoco/core/internal/analysis/filter/Filters.java
@@ -40,6 +40,7 @@ public static IFilter all() {
 				new PrivateEmptyNoArgConstructorFilter(), new AssertFilter(),
 				new StringSwitchJavacFilter(), new StringSwitchFilter(),
 				new EnumEmptyConstructorFilter(), new RecordsFilter(),
+				new RecordPatternFilter(), //
 				new AnnotationGeneratedFilter(), new KotlinGeneratedFilter(),
 				new KotlinLateinitFilter(), new KotlinWhenFilter(),
 				new KotlinWhenStringFilter(),

diff --git a/org.jacoco.core/src/org/jacoco/core/internal/analysis/filter/RecordPatternFilter.java b/org.jacoco.core/src/org/jacoco/core/internal/analysis/filter/RecordPatternFilter.java
@@ -12,13 +12,44 @@
  *******************************************************************************/
 package org.jacoco.core.internal.analysis.filter;
 
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.AbstractInsnNode;
 import org.objectweb.asm.tree.MethodNode;
+import org.objectweb.asm.tree.TryCatchBlockNode;
 
+/**
+ * Filters code that is generated for record patterns.
+ */
 final class RecordPatternFilter implements IFilter {
 
 	public void filter(final MethodNode methodNode,
 			final IFilterContext context, final IFilterOutput output) {
-		// TODO
+		final Matcher matcher = new Matcher();
+		for (final TryCatchBlockNode t : methodNode.tryCatchBlocks) {
+			if ("java/lang/Throwable".equals(t.type)) {
+				matcher.match(t.handler, output);
+			}
+		}
+	}
+
+	private static class Matcher extends AbstractMatcher {
+		void match(final AbstractInsnNode start, final IFilterOutput output) {
+			cursor = start;
+			nextIsVar(Opcodes.ASTORE, "cause");
+			nextIsType(org.objectweb.asm.Opcodes.NEW,
+					"java/lang/MatchException");
+			nextIs(Opcodes.DUP);
+			nextIsVar(Opcodes.ALOAD, "cause");
+			nextIsInvoke(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable",
+					"toString", "()Ljava/lang/String;");
+			nextIsVar(Opcodes.ALOAD, "cause");
+			nextIsInvoke(Opcodes.INVOKESPECIAL, "java/lang/MatchException",
+					"<init>", "(Ljava/lang/String;Ljava/lang/Throwable;)V");
+			nextIs(Opcodes.ATHROW);
+			if (cursor != null) {
+				output.ignore(start, cursor);
+			}
+		}
 	}
 
 }