@Override public void visitEnd() { try { accept(inner); super.visitEnd(); } catch(Exception e){ Textifier t = new Textifier(); accept(new TraceMethodVisitor(t)); StringBuilderWriter sw = new StringBuilderWriter(); PrintWriter pw = new PrintWriter(sw); t.print(pw); pw.flush(); String bytecode = sw.getBuilder().toString(); logger.error(String.format("Failure while rendering method %s, %s, %s. ByteCode:\n %s", name, desc, signature, bytecode), e); throw new RuntimeException(String.format("Failure while rendering method %s, %s, %s. ByteCode:\n %s", name, desc, signature, bytecode), e); } } }
/** Returns a human readable string for the code that this {@link BytecodeProducer} generates. */ public final String trace() { // TODO(lukes): textifier has support for custom label names by overriding appendLabel. // Consider trying to make use of (using the Label.info field? adding a custom NamedLabel // sub type?) Textifier textifier = new Textifier(Opcodes.ASM6) { { // reset tab sizes. Since we don't care about formatting class names or method // signatures (only code). We only need to set the tab2,tab3 and ltab settings (tab is // for class members). this.tab = null; // trigger an error if used. this.tab2 = " "; // tab setting for instructions this.tab3 = ""; // tab setting for switch cases this.ltab = ""; // tab setting for labels } }; gen(new CodeBuilder(new TraceMethodVisitor(textifier), 0, "trace", "()V")); StringWriter writer = new StringWriter(); textifier.print(new PrintWriter(writer)); return writer.toString(); // Note textifier always adds a trailing newline } }
/** Returns a human readable string for the code that this {@link BytecodeProducer} generates. */ public final String trace() { // TODO(lukes): textifier has support for custom label names by overriding appendLabel. // Consider trying to make use of (using the Label.info field? adding a custom NamedLabel // sub type?) Textifier textifier = new Textifier(Opcodes.ASM6) { { // reset tab sizes. Since we don't care about formatting class names or method // signatures (only code). We only need to set the tab2,tab3 and ltab settings (tab is // for class members). this.tab = null; // trigger an error if used. this.tab2 = " "; // tab setting for instructions this.tab3 = ""; // tab setting for switch cases this.ltab = ""; // tab setting for labels } }; gen(new CodeBuilder(new TraceMethodVisitor(textifier), 0, "trace", "()V")); StringWriter writer = new StringWriter(); textifier.print(new PrintWriter(writer)); return writer.toString(); // Note textifier always adds a trailing newline } }
final PrintWriter pw = new PrintWriter(System.out); list.accept(new TraceMethodVisitor(textifier)); textifier.print(pw); pw.flush(); System.out.println("\n\n");