Examples with MethodVisitor groovyjarjarasm.asm.MethodVisitor used on opensource projects

Example 1 with MethodVisitor

use of groovyjarjarasm.asm.MethodVisitor in project groovity by disney.

the class GroovityASTTransformation method visit.

public void visit(ASTNode[] nodes, final SourceUnit sourceUnit) {
    ModuleNode mn = sourceUnit.getAST();
    try {
        if (mn != null) {
            ClassNode scriptClassNode = mn.getScriptClassDummy();
            LoadFieldVisitor loadFieldVisitor = new LoadFieldVisitor(sourceUnit);
            loadFieldVisitor.visitClass(scriptClassNode);
            if (mn.getStatementBlock().isEmpty()) {
                // System.out.println("Adding dummy statement to force script");
                mn.getStatementBlock().addStatement(new ExpressionStatement(new DeclarationExpression(new VariableExpression("___groovy__run__stub___"), Token.newSymbol(Types.EQUAL, 1, 1), new ConstantExpression(null))));
            } else {
                // check whether script body really does anything, if so add ScriptBody marker API
                final AtomicBoolean runnable = new AtomicBoolean(false);
                mn.getStatementBlock().visit(new CodeVisitorSupport() {

                    public void visitExpressionStatement(ExpressionStatement statement) {
                        Expression expression = statement.getExpression();
                        if (expression instanceof DeclarationExpression) {
                            List<AnnotationNode> fa = expression.getAnnotations();
                            for (AnnotationNode n : fa) {
                                if ("Field".equals(n.getClassNode().getName()) || Field.class.equals(n.getClassNode().getTypeClass())) {
                                    // short-circuit and ignore the field declaration
                                    return;
                                }
                            }
                            DeclarationExpression de = (DeclarationExpression) expression;
                            if ((de.getVariableExpression().getModifiers() & ACC_STATIC) != 0) {
                                // static declarations are implied fields
                                return;
                            }
                        }
                        runnable.set(true);
                    }

                    public void visitReturnStatement(ReturnStatement statement) {
                        runnable.set(true);
                    }

                    public void visitAssertStatement(AssertStatement statement) {
                        runnable.set(true);
                    }
                });
                if (runnable.get()) {
                    scriptClassNode.addInterface(new ClassNode(ScriptBody.class));
                }
            }
            LoadFinder loadFinder = new LoadFinder(sourceUnit);
            loadFinder.visitClass(scriptClassNode);
            if (loadFinder.loadMethod != null) {
                scriptClassNode.addInterface(new ClassNode(Loadable.class));
            }
            LineNumberVisitor lineNumberVisitor = null;
            if (sourceLineNumbers != null) {
                lineNumberVisitor = new LineNumberVisitor(sourceUnit);
            }
            boolean isLibrary = false;
            ArgVisitor argVisitor = new ArgVisitor(sourceUnit);
            InitDependencyVisitor initVisitor = new InitDependencyVisitor(sourceUnit);
            TagFinder tagFinder = new TagFinder(sourceUnit);
            TagCallFinder tagCallFinder = new TagCallFinder(sourceUnit, scriptClassNode, factory.getTaggables());
            StaticBindingTransformer staticBindingTransformer = new StaticBindingTransformer(sourceUnit);
            StaticFieldVisitor staticFieldVisitor = new StaticFieldVisitor(sourceUnit);
            staticFieldVisitor.visitClass(scriptClassNode);
            List<MethodNode> methods = mn.getMethods();
            if (methods != null) {
                for (MethodNode method : methods) {
                    boolean isFunction = false;
                    for (AnnotationNode annotation : method.getAnnotations()) {
                        if ("Function".equals(annotation.getClassNode().getName())) {
                            // If this script contains at least one Function declaration, mark it as a library
                            isFunction = true;
                            break;
                        }
                    }
                    if (isFunction) {
                        isLibrary = true;
                        break;
                    }
                }
            }
            List<ClassNode> cnodes = mn.getClasses();
            iterateClassNodes: for (final ClassNode cn : cnodes) {
                // remap GSP line numbers so they match up with original source
                if (lineNumberVisitor != null) {
                    lineNumberVisitor.visitClass(cn);
                }
                tagCallFinder.visitClass(cn);
                // add arg annotations to methods to preserve parameter names
                argVisitor.visitClass(cn);
                if (cn.isInterface()) {
                    continue;
                }
                // Skip further processing for Traits as they don't handle static things well yet ...
                if (cn.getAnnotations() != null) {
                    for (AnnotationNode anno : cn.getAnnotations()) {
                        if (anno.getClassNode().getName().equals("groovy.transform.Trait")) {
                            // System.out.println("SKIPPING TRAIT "+cn.getName());
                            continue iterateClassNodes;
                        }
                    }
                }
                staticBindingTransformer.visitClass(cn);
                // add statistics gathering to methods and closures
                initVisitor.visitClass(cn);
                tagFinder.visitClass(cn);
                final String internalClassName = BytecodeHelper.getClassInternalName(cn);
                // add static missing property support to all classes
                BytecodeExpression staticGetPropertyMissingExpression = new BytecodeExpression() {

                    @Override
                    public void visit(MethodVisitor mv) {
                        mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                        // BytecodeHelper.visitClassLiteral(mv, cn);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), "staticPropertyMissing", BytecodeHelper.getMethodDescriptor(Object.class, new Class[] { String.class }), false);
                        mv.visitInsn(ARETURN);
                    }
                };
                MethodNode staticGetPropMethod = new MethodNode("$static_propertyMissing", ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, new ClassNode(Object.class), new Parameter[] { new Parameter(ClassHelper.make(String.class), "propertyName") }, new ClassNode[] {}, new BlockStatement(new Statement[] { new ReturnStatement(staticGetPropertyMissingExpression) }, new VariableScope()));
                staticGetPropMethod.setSynthetic(true);
                staticGetPropMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                cn.addMethod(staticGetPropMethod);
                // add static missing method support to all classes
                BytecodeExpression staticGetMethodMissingExpression = new BytecodeExpression() {

                    @Override
                    public void visit(MethodVisitor mv) {
                        mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                        // BytecodeHelper.visitClassLiteral(mv, cn);
                        mv.visitVarInsn(ALOAD, 0);
                        mv.visitVarInsn(ALOAD, 1);
                        mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), "invokeMethod", BytecodeHelper.getMethodDescriptor(Object.class, new Class[] { String.class, Object.class }), false);
                        mv.visitInsn(ARETURN);
                    }
                };
                MethodNode staticGetMissingMethod = new MethodNode("$static_methodMissing", ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, new ClassNode(Object.class), new Parameter[] { new Parameter(ClassHelper.make(String.class), "methodName"), new Parameter(ClassHelper.make(Object.class), "methodArgs") }, new ClassNode[] {}, new BlockStatement(new Statement[] { new ReturnStatement(staticGetMethodMissingExpression) }, new VariableScope()));
                staticGetMissingMethod.setSynthetic(true);
                staticGetMissingMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                cn.addMethod(staticGetMissingMethod);
                if (!(cn instanceof InnerClassNode) || cn.isStaticClass()) {
                    FieldNode gsfNode = new FieldNode(GROOVITY_SCRIPT_HELPER_FIELD, ACC_PROTECTED | ACC_STATIC, new ClassNode(ScriptHelper.class), cn, ConstantExpression.NULL);
                    cn.addField(gsfNode);
                    // add missing method support to all classes
                    BytecodeExpression getMethodMissingExpression = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            // BytecodeHelper.visitClassLiteral(mv, cn);
                            mv.visitVarInsn(ALOAD, 1);
                            mv.visitVarInsn(ALOAD, 2);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), "invokeMethod", BytecodeHelper.getMethodDescriptor(Object.class, new Class[] { String.class, Object.class }), false);
                            mv.visitInsn(ARETURN);
                        }
                    };
                    MethodNode getMissingMethod = new MethodNode("methodMissing", ACC_PUBLIC | ACC_SYNTHETIC, new ClassNode(Object.class), new Parameter[] { new Parameter(ClassHelper.make(String.class), "methodName"), new Parameter(ClassHelper.make(Object.class), "methodArgs") }, new ClassNode[] { new ClassNode(Exception.class) }, new BlockStatement(new Statement[] { new ReturnStatement(getMethodMissingExpression) }, new VariableScope()));
                    getMissingMethod.setSynthetic(true);
                    getMissingMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(getMissingMethod);
                    // add missing property lookup to top-level classes
                    BytecodeExpression instanceGetPropertyMissingExpression = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            mv.visitVarInsn(ALOAD, 1);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), "getProperty", BytecodeHelper.getMethodDescriptor(Object.class, new Class[] { String.class }), false);
                            mv.visitInsn(ARETURN);
                        }
                    };
                    MethodNode instanceGetMethod = new MethodNode("propertyMissing", ACC_PUBLIC | ACC_SYNTHETIC, new ClassNode(Object.class), new Parameter[] { new Parameter(ClassHelper.make(String.class), "propertyName") }, new ClassNode[] {}, new BlockStatement(new Statement[] { new ReturnStatement(instanceGetPropertyMissingExpression) }, new VariableScope()));
                    instanceGetMethod.setSynthetic(true);
                    instanceGetMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(instanceGetMethod);
                    BytecodeExpression instanceSetPropertyMissingExpression = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            mv.visitVarInsn(ALOAD, 1);
                            mv.visitVarInsn(ALOAD, 2);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), "setProperty", Type.getMethodDescriptor(Type.VOID_TYPE, Type.getType(String.class), Type.getType(Object.class)), false);
                            mv.visitInsn(RETURN);
                        }
                    };
                    MethodNode setMethod = new MethodNode("propertyMissing", ACC_PUBLIC | ACC_SYNTHETIC, ClassHelper.VOID_TYPE, new Parameter[] { new Parameter(ClassHelper.make(String.class), "propertyName"), new Parameter(new ClassNode(Object.class), "newValue") }, new ClassNode[] {}, new BlockStatement(new Statement[] { new ExpressionStatement(instanceSetPropertyMissingExpression) }, new VariableScope()));
                    setMethod.setSynthetic(true);
                    setMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(setMethod);
                    if (cn != scriptClassNode) {
                        // add getBinding to other classes
                        BytecodeExpression getFactoryCall = new BytecodeExpression() {

                            @Override
                            public void visit(MethodVisitor mv) {
                                mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                                mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), "getBinding", BytecodeHelper.getMethodDescriptor(Binding.class, new Class[] {}), false);
                                mv.visitInsn(ARETURN);
                            }
                        };
                        MethodNode getMethod = new MethodNode("getBinding", ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, new ClassNode(Binding.class), new Parameter[] {}, new ClassNode[] {}, new BlockStatement(new Statement[] { new ReturnStatement(getFactoryCall) }, new VariableScope()));
                        getMethod.setSynthetic(true);
                        getMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                        cn.addMethod(getMethod);
                    }
                    // add load, run and tag methods to all top level classes
                    BytecodeExpression loadFactoryCall = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            mv.visitVarInsn(ALOAD, 0);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), LOAD, BytecodeHelper.getMethodDescriptor(Script.class, new Class[] { String.class }), false);
                            mv.visitInsn(ARETURN);
                        }
                    };
                    MethodNode loadMethod = new MethodNode(LOAD, ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, new ClassNode(Script.class), new Parameter[] { new Parameter(new ClassNode(String.class), "path") }, new ClassNode[] { new ClassNode(InstantiationException.class), new ClassNode(IllegalAccessException.class), new ClassNode(ClassNotFoundException.class) }, new BlockStatement(new Statement[] { new ReturnStatement(loadFactoryCall) }, new VariableScope()));
                    loadMethod.setSynthetic(true);
                    loadMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(loadMethod);
                    BytecodeExpression runFactoryCall = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            mv.visitVarInsn(ALOAD, 0);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), RUN, BytecodeHelper.getMethodDescriptor(Object.class, new Class[] { String.class }), false);
                            mv.visitInsn(ARETURN);
                        }
                    };
                    MethodNode runMethod = new MethodNode(RUN, ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, ClassHelper.OBJECT_TYPE, new Parameter[] { new Parameter(new ClassNode(String.class), "path") }, new ClassNode[] { new ClassNode(InstantiationException.class), new ClassNode(IllegalAccessException.class), new ClassNode(ClassNotFoundException.class), new ClassNode(IOException.class) }, new BlockStatement(new Statement[] { new ReturnStatement(runFactoryCall) }, new VariableScope()));
                    runMethod.setSynthetic(true);
                    runMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(runMethod);
                    BytecodeExpression doStreamCall = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            mv.visitVarInsn(ALOAD, 0);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), STREAM, Type.getMethodDescriptor(Type.VOID_TYPE, Type.getType(Object.class)), false);
                            mv.visitInsn(RETURN);
                        }
                    };
                    MethodNode doStreamMethod = new MethodNode(STREAM, ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, ClassHelper.VOID_TYPE, new Parameter[] { new Parameter(ClassHelper.make(Object.class), "obj") }, new ClassNode[] {}, new BlockStatement(new Statement[] { new ExpressionStatement(doStreamCall) }, new VariableScope()));
                    doStreamMethod.setSynthetic(true);
                    doStreamMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(doStreamMethod);
                    BytecodeExpression doTagFullFactoryCall = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            mv.visitVarInsn(ALOAD, 0);
                            mv.visitVarInsn(ALOAD, 1);
                            mv.visitVarInsn(ALOAD, 2);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), TAG, BytecodeHelper.getMethodDescriptor(Object.class, new Class[] { String.class, Map.class, Closure.class }), false);
                            mv.visitInsn(ARETURN);
                        }
                    };
                    MethodNode doTagFullMethod = new MethodNode(TAG, ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, ClassHelper.OBJECT_TYPE, new Parameter[] { new Parameter(ClassHelper.make(String.class), "tagName"), new Parameter(new ClassNode(Map.class), "attributes"), new Parameter(new ClassNode(Closure.class), "body") }, new ClassNode[] { new ClassNode(Exception.class) }, new BlockStatement(new Statement[] { new ReturnStatement(doTagFullFactoryCall) }, new VariableScope()));
                    doTagFullMethod.setSynthetic(true);
                    doTagFullMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(doTagFullMethod);
                    BytecodeExpression doTagShortBodyFactoryCall = new BytecodeExpression() {

                        @Override
                        public void visit(MethodVisitor mv) {
                            mv.visitFieldInsn(GETSTATIC, internalClassName, GROOVITY_SCRIPT_HELPER_FIELD, BytecodeHelper.getTypeDescription(ScriptHelper.class));
                            mv.visitVarInsn(ALOAD, 0);
                            mv.visitVarInsn(ALOAD, 1);
                            mv.visitMethodInsn(INVOKEVIRTUAL, BytecodeHelper.getClassInternalName(ScriptHelper.class), TAG, BytecodeHelper.getMethodDescriptor(Object.class, new Class[] { String.class, Closure.class }), false);
                            mv.visitInsn(ARETURN);
                        }
                    };
                    MethodNode doTagShortBodyMethod = new MethodNode(TAG, ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC, ClassHelper.OBJECT_TYPE, new Parameter[] { new Parameter(ClassHelper.make(String.class), "tagName"), new Parameter(new ClassNode(Closure.class), "body") }, new ClassNode[] { new ClassNode(Exception.class) }, new BlockStatement(new Statement[] { new ReturnStatement(doTagShortBodyFactoryCall) }, new VariableScope()));
                    doTagShortBodyMethod.setSynthetic(true);
                    doTagShortBodyMethod.putNodeMetaData(StaticCompilationMetadataKeys.STATIC_COMPILE_NODE, true);
                    cn.addMethod(doTagShortBodyMethod);
                }
            }
            // Record whether the class is a library with @Functions in a static final boolean.
            final FieldNode isLibraryFieldNode = new FieldNode("isGroovyLibrary", ACC_PUBLIC | ACC_STATIC | ACC_FINAL, new ClassNode(Boolean.class), scriptClassNode, new ConstantExpression(isLibrary));
            scriptClassNode.addField(isLibraryFieldNode);
            ListExpression dependencyExpression = new ListExpression();
            for (String dep : initDependencies) {
                dependencyExpression.addExpression(new ConstantExpression(dep));
            }
            // Store pointers to all dependencies to help control load order
            final FieldNode initDependenciesFieldNode = new FieldNode("initDependencies", ACC_PUBLIC | ACC_STATIC | ACC_FINAL, new ClassNode(new ArrayList<String>().getClass()), scriptClassNode, dependencyExpression);
            scriptClassNode.addField(initDependenciesFieldNode);
        }
    } catch (Exception e) {
        log.error("Error generating stats AST: ", e);
    }
}