diff options
Diffstat (limited to 'tools/external/asm/org/objectweb/asm/util/TraceMethodVisitor.java')
| -rw-r--r-- | tools/external/asm/org/objectweb/asm/util/TraceMethodVisitor.java | 486 |
1 files changed, 486 insertions, 0 deletions
diff --git a/tools/external/asm/org/objectweb/asm/util/TraceMethodVisitor.java b/tools/external/asm/org/objectweb/asm/util/TraceMethodVisitor.java new file mode 100644 index 000000000..899f52ea7 --- /dev/null +++ b/tools/external/asm/org/objectweb/asm/util/TraceMethodVisitor.java @@ -0,0 +1,486 @@ +/*** + * ASM: a very small and fast Java bytecode manipulation framework + * Copyright (c) 2000-2005 INRIA, France Telecom + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.objectweb.asm.util; + +import org.objectweb.asm.AnnotationVisitor; +import org.objectweb.asm.Attribute; +import org.objectweb.asm.MethodVisitor; +import org.objectweb.asm.Label; +import org.objectweb.asm.Opcodes; +import org.objectweb.asm.Type; +import org.objectweb.asm.signature.SignatureReader; +import org.objectweb.asm.util.attrs.Traceable; + +import java.util.HashMap; + +/** + * A {@link MethodVisitor} that prints a disassembled view of the methods it + * visits. + * + * @author Eric Bruneton + */ +public class TraceMethodVisitor extends TraceAbstractVisitor implements + MethodVisitor +{ + + /** + * The {@link MethodVisitor} to which this visitor delegates calls. May be + * <tt>null</tt>. + */ + protected MethodVisitor mv; + + /** + * Tab for bytecode instructions. + */ + protected String tab2 = " "; + + /** + * Tab for table and lookup switch instructions. + */ + protected String tab3 = " "; + + /** + * Tab for labels. + */ + protected String ltab = " "; + + /** + * The label names. This map associate String values to Label keys. + */ + protected final HashMap labelNames; + + /** + * Constructs a new {@link TraceMethodVisitor}. + */ + public TraceMethodVisitor() { + this(null); + } + + /** + * Constructs a new {@link TraceMethodVisitor}. + * + * @param mv the {@link MethodVisitor} to which this visitor delegates + * calls. May be <tt>null</tt>. + */ + public TraceMethodVisitor(final MethodVisitor mv) { + this.labelNames = new HashMap(); + this.mv = mv; + } + + // ------------------------------------------------------------------------ + // Implementation of the MethodVisitor interface + // ------------------------------------------------------------------------ + + public AnnotationVisitor visitAnnotation( + final String desc, + final boolean visible) + { + AnnotationVisitor av = super.visitAnnotation(desc, visible); + if (mv != null) { + ((TraceAnnotationVisitor) av).av = mv.visitAnnotation(desc, visible); + } + return av; + } + + public void visitAttribute(final Attribute attr) { + buf.setLength(0); + buf.append(tab).append("ATTRIBUTE "); + appendDescriptor(-1, attr.type); + + if (attr instanceof Traceable) { + ((Traceable) attr).trace(buf, labelNames); + } else { + buf.append(" : ").append(attr.toString()).append("\n"); + } + + text.add(buf.toString()); + if (mv != null) { + mv.visitAttribute(attr); + } + } + + public AnnotationVisitor visitAnnotationDefault() { + text.add(tab2 + "default="); + TraceAnnotationVisitor tav = new TraceAnnotationVisitor(); + text.add(tav.getText()); + text.add("\n"); + if (mv != null) { + tav.av = mv.visitAnnotationDefault(); + } + return tav; + } + + public AnnotationVisitor visitParameterAnnotation( + final int parameter, + final String desc, + final boolean visible) + { + buf.setLength(0); + buf.append(tab2).append('@'); + appendDescriptor(FIELD_DESCRIPTOR, desc); + buf.append('('); + text.add(buf.toString()); + TraceAnnotationVisitor tav = new TraceAnnotationVisitor(); + text.add(tav.getText()); + text.add(visible ? ") // parameter " : ") // invisible, parameter "); + text.add(new Integer(parameter)); + text.add("\n"); + if (mv != null) { + tav.av = mv.visitParameterAnnotation(parameter, desc, visible); + } + return tav; + } + + public void visitCode() { + if (mv != null) { + mv.visitCode(); + } + } + + public void visitInsn(final int opcode) { + buf.setLength(0); + buf.append(tab2).append(OPCODES[opcode]).append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitInsn(opcode); + } + } + + public void visitIntInsn(final int opcode, final int operand) { + buf.setLength(0); + buf.append(tab2) + .append(OPCODES[opcode]) + .append(' ') + .append(opcode == Opcodes.NEWARRAY + ? TYPES[operand] + : Integer.toString(operand)) + .append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitIntInsn(opcode, operand); + } + } + + public void visitVarInsn(final int opcode, final int var) { + buf.setLength(0); + buf.append(tab2) + .append(OPCODES[opcode]) + .append(' ') + .append(var) + .append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitVarInsn(opcode, var); + } + } + + public void visitTypeInsn(final int opcode, final String desc) { + buf.setLength(0); + buf.append(tab2).append(OPCODES[opcode]).append(' '); + if (desc.startsWith("[")) { + appendDescriptor(FIELD_DESCRIPTOR, desc); + } else { + appendDescriptor(INTERNAL_NAME, desc); + } + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitTypeInsn(opcode, desc); + } + } + + public void visitFieldInsn( + final int opcode, + final String owner, + final String name, + final String desc) + { + buf.setLength(0); + buf.append(tab2).append(OPCODES[opcode]).append(' '); + appendDescriptor(INTERNAL_NAME, owner); + buf.append('.').append(name).append(" : "); + appendDescriptor(FIELD_DESCRIPTOR, desc); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitFieldInsn(opcode, owner, name, desc); + } + } + + public void visitMethodInsn( + final int opcode, + final String owner, + final String name, + final String desc) + { + buf.setLength(0); + buf.append(tab2).append(OPCODES[opcode]).append(' '); + appendDescriptor(INTERNAL_NAME, owner); + buf.append('.').append(name).append(' '); + appendDescriptor(METHOD_DESCRIPTOR, desc); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitMethodInsn(opcode, owner, name, desc); + } + } + + public void visitJumpInsn(final int opcode, final Label label) { + buf.setLength(0); + buf.append(tab2).append(OPCODES[opcode]).append(' '); + appendLabel(label); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitJumpInsn(opcode, label); + } + } + + public void visitLabel(final Label label) { + buf.setLength(0); + buf.append(ltab); + appendLabel(label); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitLabel(label); + } + } + + public void visitLdcInsn(final Object cst) { + buf.setLength(0); + buf.append(tab2).append("LDC "); + if (cst instanceof String) { + AbstractVisitor.appendString(buf, (String) cst); + } else if (cst instanceof Type) { + buf.append(((Type) cst).getDescriptor() + ".class"); + } else { + buf.append(cst); + } + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitLdcInsn(cst); + } + } + + public void visitIincInsn(final int var, final int increment) { + buf.setLength(0); + buf.append(tab2) + .append("IINC ") + .append(var) + .append(' ') + .append(increment) + .append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitIincInsn(var, increment); + } + } + + public void visitTableSwitchInsn( + final int min, + final int max, + final Label dflt, + final Label labels[]) + { + buf.setLength(0); + buf.append(tab2).append("TABLESWITCH\n"); + for (int i = 0; i < labels.length; ++i) { + buf.append(tab3).append(min + i).append(": "); + appendLabel(labels[i]); + buf.append('\n'); + } + buf.append(tab3).append("default: "); + appendLabel(dflt); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitTableSwitchInsn(min, max, dflt, labels); + } + } + + public void visitLookupSwitchInsn( + final Label dflt, + final int keys[], + final Label labels[]) + { + buf.setLength(0); + buf.append(tab2).append("LOOKUPSWITCH\n"); + for (int i = 0; i < labels.length; ++i) { + buf.append(tab3).append(keys[i]).append(": "); + appendLabel(labels[i]); + buf.append('\n'); + } + buf.append(tab3).append("default: "); + appendLabel(dflt); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitLookupSwitchInsn(dflt, keys, labels); + } + } + + public void visitMultiANewArrayInsn(final String desc, final int dims) { + buf.setLength(0); + buf.append(tab2).append("MULTIANEWARRAY "); + appendDescriptor(FIELD_DESCRIPTOR, desc); + buf.append(' ').append(dims).append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitMultiANewArrayInsn(desc, dims); + } + } + + public void visitTryCatchBlock( + final Label start, + final Label end, + final Label handler, + final String type) + { + buf.setLength(0); + buf.append(tab2).append("TRYCATCHBLOCK "); + appendLabel(start); + buf.append(' '); + appendLabel(end); + buf.append(' '); + appendLabel(handler); + buf.append(' '); + appendDescriptor(INTERNAL_NAME, type); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitTryCatchBlock(start, end, handler, type); + } + } + + public void visitLocalVariable( + final String name, + final String desc, + final String signature, + final Label start, + final Label end, + final int index) + { + buf.setLength(0); + buf.append(tab2).append("LOCALVARIABLE ").append(name).append(' '); + appendDescriptor(FIELD_DESCRIPTOR, desc); + buf.append(' '); + appendLabel(start); + buf.append(' '); + appendLabel(end); + buf.append(' ').append(index).append('\n'); + + if (signature != null) { + buf.append(tab2); + appendDescriptor(FIELD_SIGNATURE, signature); + + TraceSignatureVisitor sv = new TraceSignatureVisitor(0); + SignatureReader r = new SignatureReader(signature); + r.acceptType(sv); + buf.append(tab2) + .append("// declaration: ") + .append(sv.getDeclaration()) + .append('\n'); + } + text.add(buf.toString()); + + if (mv != null) { + mv.visitLocalVariable(name, desc, signature, start, end, index); + } + } + + public void visitLineNumber(final int line, final Label start) { + buf.setLength(0); + buf.append(tab2).append("LINENUMBER ").append(line).append(' '); + appendLabel(start); + buf.append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitLineNumber(line, start); + } + } + + public void visitMaxs(final int maxStack, final int maxLocals) { + buf.setLength(0); + buf.append(tab2).append("MAXSTACK = ").append(maxStack).append('\n'); + text.add(buf.toString()); + + buf.setLength(0); + buf.append(tab2).append("MAXLOCALS = ").append(maxLocals).append('\n'); + text.add(buf.toString()); + + if (mv != null) { + mv.visitMaxs(maxStack, maxLocals); + } + } + + public void visitEnd() { + super.visitEnd(); + + if (mv != null) { + mv.visitEnd(); + } + } + + // ------------------------------------------------------------------------ + // Utility methods + // ------------------------------------------------------------------------ + + /** + * Appends the name of the given label to {@link #buf buf}. Creates a new + * label name if the given label does not yet have one. + * + * @param l a label. + */ + public void appendLabel(final Label l) { + String name = (String) labelNames.get(l); + if (name == null) { + name = "L" + labelNames.size(); + labelNames.put(l, name); + } + buf.append(name); + } +} |