Track #66: first skeleton of MethodAnalzer

1 files changed, 231 insertions, 0 deletions

diff --git a/org.jacoco.core/src/org/jacoco/core/internal/flow/MethodAnalyzer.java b/org.jacoco.core/src/org/jacoco/core/internal/flow/MethodAnalyzer.java
new file mode 100644
index 00000000..b82a69f3
--- /dev/null
+++ b/org.jacoco.core/src/org/jacoco/core/internal/flow/MethodAnalyzer.java
@@ -0,0 +1,231 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2010 Mountainminds GmbH & Co. KG and Contributors
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Marc R. Hoffmann - initial API and implementation
+ *    
+ *******************************************************************************/
+package org.jacoco.core.internal.flow;
+
+import org.objectweb.asm.AnnotationVisitor;
+import org.objectweb.asm.Attribute;
+import org.objectweb.asm.Label;
+
+/**
+ * A {@link IMethodProbesVisitor} that analyzes which statements and branches of
+ * a method has been executed based on given probe data.
+ * 
+ * @author Marc R. Hoffmann
+ * @version $qualified.bundle.version$
+ */
+public final class MethodAnalyzer implements IMethodProbesVisitor {
+
+	/**
+	 * The result for each instruction and branch of the analysis is reported to
+	 * an instance of this interface.
+	 */
+	public interface Output {
+
+		/** Place holder for unknown lines (no debug information) */
+		public static int UNKNOWN_LINE = -1;
+
+		/**
+		 * Called for every instruction.
+		 * 
+		 * @param covered
+		 *            <code>true</code> if the instruction has been executed
+		 * @param line
+		 *            source line number of the instruction
+		 */
+		public void visitInsn(boolean covered, int line);
+
+		/**
+		 * Called for every branch.
+		 * 
+		 * @param covered
+		 *            <code>true</code> if the branch has been executed
+		 * @param line
+		 *            source line number of the instruction
+		 */
+		public void visitBranch(boolean covered, int line);
+	}
+
+	private final boolean[] probes;
+
+	private final Output output;
+
+	private int currentLine = Output.UNKNOWN_LINE;
+
+	/**
+	 * New Method analyzer for the given probe data.
+	 * 
+	 * @param probes
+	 *            recorded probe date of the containing class
+	 * @param output
+	 *            instance to report coverage information to
+	 */
+	public MethodAnalyzer(final boolean[] probes, final Output output) {
+		this.probes = probes;
+		this.output = output;
+	}
+
+	public void visitLineNumber(final int line, final Label start) {
+		currentLine = line;
+	}
+
+	public void visitInsn(final int opcode) {
+		// TODO Auto-generated method stub
+	}
+
+	public AnnotationVisitor visitAnnotationDefault() {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	public AnnotationVisitor visitAnnotation(final String desc,
+			final boolean visible) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	public AnnotationVisitor visitParameterAnnotation(final int parameter,
+			final String desc, final boolean visible) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	public void visitAttribute(final Attribute attr) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitCode() {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitFrame(final int type, final int nLocal,
+			final Object[] local, final int nStack, final Object[] stack) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitIntInsn(final int opcode, final int operand) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitVarInsn(final int opcode, final int var) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitTypeInsn(final int opcode, final String type) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitFieldInsn(final int opcode, final String owner,
+			final String name, final String desc) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitMethodInsn(final int opcode, final String owner,
+			final String name, final String desc) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitJumpInsn(final int opcode, final Label label) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitLabel(final Label label) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitLdcInsn(final Object cst) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitIincInsn(final int var, final int increment) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitTableSwitchInsn(final int min, final int max,
+			final Label dflt, final Label[] labels) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitLookupSwitchInsn(final Label dflt, final int[] keys,
+			final Label[] labels) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitMultiANewArrayInsn(final String desc, final int dims) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitTryCatchBlock(final Label start, final Label end,
+			final Label handler, final String type) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitLocalVariable(final String name, final String desc,
+			final String signature, final Label start, final Label end,
+			final int index) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitMaxs(final int maxStack, final int maxLocals) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitEnd() {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitProbe(final int probeId) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitJumpInsnWithProbe(final int opcode, final Label label,
+			final int probeId) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitInsnWithProbe(final int opcode, final int probeId) {
+		output.visitInsn(probes[probeId], currentLine);
+	}
+
+	public void visitTableSwitchInsnWithProbes(final int min, final int max,
+			final Label dflt, final Label[] labels) {
+		// TODO Auto-generated method stub
+
+	}
+
+	public void visitLookupSwitchInsnWithProbes(final Label dflt,
+			final int[] keys, final Label[] labels) {
+		// TODO Auto-generated method stub
+
+	}
+
+}