Mercurial > hg > graal-jvmci-8
diff graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/Utils.java @ 7291:a748e4d44694
Truffle API to specify type-specalized Node classes; annotation processor for automatic code generation of the type-specialized Node classes during the build process
author | Christian Humer <christian.humer@gmail.com> |
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date | Fri, 21 Dec 2012 10:44:31 -0800 |
parents | |
children | 6343a09b2ec1 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graal/com.oracle.truffle.codegen.processor/src/com/oracle/truffle/codegen/processor/Utils.java Fri Dec 21 10:44:31 2012 -0800 @@ -0,0 +1,551 @@ +/* + * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ +package com.oracle.truffle.codegen.processor; + +import java.io.*; +import java.lang.annotation.*; +import java.util.*; + +import javax.annotation.processing.*; +import javax.lang.model.element.*; +import javax.lang.model.type.*; +import javax.lang.model.util.*; + +import com.oracle.truffle.codegen.processor.ast.*; +import com.oracle.truffle.codegen.processor.compiler.*; + +/** + * THIS IS NOT PUBLIC API. + */ +public class Utils { + + public static String getMethodBody(ProcessingEnvironment env, ExecutableElement method) { + if (method instanceof CodeExecutableElement) { + return ((CodeExecutableElement) method).getBody(); + } else { + return CompilerFactory.getCompiler(method).getMethodBody(env, method); + } + } + + public static List<AnnotationMirror> collectAnnotations( + ProcessorContext context, + AnnotationMirror markerAnnotation, String elementName, Element element, + Class< ? extends Annotation> annotationClass) { + List<AnnotationMirror> result = Utils.getAnnotationValueList(markerAnnotation, elementName); + AnnotationMirror explicit = Utils.findAnnotationMirror(context.getEnvironment(), element, annotationClass); + if (explicit != null) { + result.add(explicit); + } + + for (AnnotationMirror mirror : result) { + assert Utils.typeEquals(mirror.getAnnotationType(), context.getType(annotationClass)); + } + return result; + } + + public static boolean hasError(TypeMirror mirror) { + switch (mirror.getKind()) { + case BOOLEAN: + case BYTE: + case CHAR: + case DOUBLE: + case FLOAT: + case INT: + case SHORT: + case LONG: + case DECLARED: + case VOID: + case TYPEVAR: + return false; + case ARRAY: + return hasError(((ArrayType) mirror).getComponentType()); + case ERROR: + return true; + default: + throw new RuntimeException("Unknown type specified " + mirror.getKind() + " mirror: " + mirror); + } + } + + /** + * True if t1 is assignable to t2. + */ + public static boolean isAssignable(TypeMirror t1, TypeMirror t2) { + if (typeEquals(t1, t2)) { + return true; + } + if (isPrimitive(t1) || isPrimitive(t2)) { + // non-equal primitive types + return false; + } + if (t1 instanceof ArrayType && t2 instanceof ArrayType) { + return isAssignable(((ArrayType) t1).getComponentType(), ((ArrayType) t2).getComponentType()); + } + + TypeElement e1 = fromTypeMirror(t1); + TypeElement e2 = fromTypeMirror(t2); + if (e1 == null || e2 == null) { + return false; + } + + List<TypeElement> superTypes = getSuperTypes(e1); + for (TypeElement superType : superTypes) { + if (typeEquals(superType.asType(), t2)) { + return true; + } + } + return false; + } + + public static Set<Modifier> modifiers(Modifier... modifier) { + return new LinkedHashSet<>(Arrays.asList(modifier)); + } + + public static String getSimpleName(TypeElement element) { + return getSimpleName(element.asType()); + } + + public static String getSimpleName(TypeMirror mirror) { + switch (mirror.getKind()) { + case BOOLEAN: + return "boolean"; + case BYTE: + return "byte"; + case CHAR: + return "char"; + case DOUBLE: + return "double"; + case FLOAT: + return "float"; + case SHORT: + return "short"; + case INT: + return "int"; + case LONG: + return "long"; + case DECLARED: + return getGenericName(fromTypeMirror(mirror)); + case ARRAY: + return getSimpleName(((ArrayType) mirror).getComponentType()) + "[]"; + case VOID: + return "void"; + case TYPEVAR: + return ((TypeParameterElement) ((TypeVariable) mirror).asElement()).getSimpleName().toString(); + default: + throw new RuntimeException("Unknown type specified " + mirror.getKind() + " mirror: " + mirror); + } + } + + + private static String getGenericName(TypeElement element) { + String simpleName = element.getSimpleName().toString(); + + if (element.getTypeParameters().size() == 0) { + return simpleName; + } + + StringBuilder b = new StringBuilder(simpleName); + b.append("<"); + if (element.getTypeParameters().size() > 0) { + for (int i = 0; i < element.getTypeParameters().size(); i++) { + b.append("?"); + if (i < element.getTypeParameters().size() - 1) { + b.append(", "); + } + } + } + b.append(">"); + return b.toString(); + } + + public static String getQualifiedName(TypeElement element) { + return element.getQualifiedName().toString(); + } + + public static String getQualifiedName(TypeMirror mirror) { + switch (mirror.getKind()) { + case BOOLEAN: + return "boolean"; + case BYTE: + return "byte"; + case CHAR: + return "char"; + case DOUBLE: + return "double"; + case SHORT: + return "short"; + case FLOAT: + return "float"; + case INT: + return "int"; + case LONG: + return "long"; + case DECLARED: + return getQualifiedName(fromTypeMirror(mirror)); + case ARRAY: + return getQualifiedName(((ArrayType) mirror).getComponentType()); + case VOID: + return "void"; + case TYPEVAR: + return getSimpleName(mirror); + default: + throw new RuntimeException("Unknown type specified " + mirror + " mirror: " + mirror); + } + } + + public static boolean isVoid(TypeMirror mirror) { + return mirror.getKind() == TypeKind.VOID; + } + + public static boolean isPrimitive(TypeMirror mirror) { + return mirror.getKind().isPrimitive(); + } + + public static List<String> getQualifiedSuperTypeNames(TypeElement element) { + List<TypeElement> types = getSuperTypes(element); + List<String> qualifiedNames = new ArrayList<>(); + for (TypeElement type : types) { + qualifiedNames.add(getQualifiedName(type)); + } + return qualifiedNames; + } + + public static List<TypeElement> getDeclaredTypes(TypeElement element) { + return ElementFilter.typesIn(element.getEnclosedElements()); + } + + public static VariableElement findDeclaredField(TypeMirror type, String singletonName) { + List<VariableElement> elements = ElementFilter.fieldsIn(fromTypeMirror(type).getEnclosedElements()); + for (VariableElement var : elements) { + if (var.getSimpleName().toString().equals(singletonName)) { + return var; + } + } + return null; + } + + public static TypeElement findEnclosingType(Element element) { + Element enclosing = element.getEnclosingElement(); + while (enclosing.getKind() != ElementKind.CLASS && enclosing.getKind() != ElementKind.ENUM && enclosing.getKind() != ElementKind.INTERFACE) { + enclosing = element.getEnclosingElement(); + } + + return (TypeElement) enclosing; + } + + public static List<TypeElement> getSuperTypes(TypeElement element) { + List<TypeElement> types = new ArrayList<>(); + List<TypeElement> superTypes = null; + List<TypeElement> superInterfaces = null; + if (element.getSuperclass() != null) { + TypeElement superElement = fromTypeMirror(element.getSuperclass()); + if (superElement != null) { + types.add(superElement); + superTypes = getSuperTypes(superElement); + } + } + for (TypeMirror interfaceMirror : element.getInterfaces()) { + TypeElement interfaceElement = fromTypeMirror(interfaceMirror); + if (interfaceElement != null) { + types.add(interfaceElement); + superInterfaces = getSuperTypes(interfaceElement); + } + } + + if (superTypes != null) { + types.addAll(superTypes); + } + + if (superInterfaces != null) { + types.addAll(superInterfaces); + } + + return types; + } + + public static String getPackageName(TypeElement element) { + return findPackageElement(element).getQualifiedName().toString(); + } + + public static String getPackageName(TypeMirror mirror) { + switch (mirror.getKind()) { + case BOOLEAN: + case BYTE: + case CHAR: + case DOUBLE: + case FLOAT: + case SHORT: + case INT: + case LONG: + case VOID: + case TYPEVAR: + return null; + case DECLARED: + PackageElement pack = findPackageElement(fromTypeMirror(mirror)); + if (pack == null) { + throw new IllegalArgumentException("No package element found for declared type " + getSimpleName(mirror)); + } + return pack.getQualifiedName().toString(); + case ARRAY: + return getSimpleName(((ArrayType) mirror).getComponentType()); + default: + throw new RuntimeException("Unknown type specified " + mirror.getKind()); + } + } + + public static String createConstantName(String simpleName) { + //TODO use camel case to produce underscores. + return simpleName.toString().toUpperCase(); + } + + public static TypeElement fromTypeMirror(TypeMirror mirror) { + switch (mirror.getKind()) { + case DECLARED: + return (TypeElement) ((DeclaredType) mirror).asElement(); + case ARRAY: + return fromTypeMirror(((ArrayType) mirror).getComponentType()); + default: + return null; + } + } + + @SuppressWarnings("unchecked") + public static <T> List<T> getAnnotationValueList(AnnotationMirror mirror, String name) { + List<T> result = new ArrayList<>(); + List< ? extends AnnotationValue> values = (List< ? extends AnnotationValue>) getAnnotationValue(mirror, name).getValue(); + for (AnnotationValue value : values) { + result.add((T) value.getValue()); + } + return result; + } + + public static TypeMirror getAnnotationValueType(AnnotationMirror mirror, String name) { + return (TypeMirror) getAnnotationValue(mirror, name).getValue(); + } + + public static TypeMirror getAnnotationValueTypeMirror(AnnotationMirror mirror, String name) { + return (TypeMirror) getAnnotationValue(mirror, name).getValue(); + } + + public static String getAnnotationValueString(AnnotationMirror mirror, String name) { + return (String) getAnnotationValue(mirror, name).getValue(); + } + + public static int getAnnotationValueInt(AnnotationMirror mirror, String name) { + return (int) getAnnotationValue(mirror, name).getValue(); + } + + public static AnnotationValue getAnnotationValue(AnnotationMirror mirror, String name) { + ExecutableElement valueMethod = null; + for (ExecutableElement method : ElementFilter.methodsIn(mirror.getAnnotationType().asElement().getEnclosedElements())) { + if (method.getSimpleName().toString().equals(name)) { + valueMethod = method; + break; + } + } + + if (valueMethod == null) { + return null; + } + + AnnotationValue value = mirror.getElementValues().get(valueMethod); + if (value == null) { + value = valueMethod.getDefaultValue(); + } + return value; + } + + public static boolean getAnnotationValueBoolean(AnnotationMirror mirror, String name) { + return (Boolean) getAnnotationValue(mirror, name).getValue(); + } + + public static String printException(Throwable e) { + StringWriter string = new StringWriter(); + PrintWriter writer = new PrintWriter(string); + e.printStackTrace(writer); + writer.flush(); + return e.getMessage() + "\r\n" + string.toString(); + } + + public static AnnotationMirror findAnnotationMirror(ProcessingEnvironment processingEnv, Element element, Class< ? > annotationClass) { + return findAnnotationMirror(processingEnv, element.getAnnotationMirrors(), annotationClass); + } + + public static AnnotationMirror findAnnotationMirror(ProcessingEnvironment processingEnv, List< ? extends AnnotationMirror> mirrors, Class< ? > annotationClass) { + TypeElement expectedAnnotationType = processingEnv.getElementUtils().getTypeElement(annotationClass.getName()); + for (AnnotationMirror mirror : mirrors) { + DeclaredType annotationType = mirror.getAnnotationType(); + TypeElement actualAnnotationType = (TypeElement) annotationType.asElement(); + if (actualAnnotationType.equals(expectedAnnotationType)) { + return mirror; + } + } + return null; + } + + private static PackageElement findPackageElement(Element type) { + Element searchType = type; + while (searchType.getEnclosingElement() != null && searchType.getEnclosingElement().getKind() != ElementKind.PACKAGE) { + searchType = type.getEnclosingElement(); + } + return (PackageElement) searchType.getEnclosingElement(); + } + + public static String firstLetterUpperCase(String name) { + if (name == null || name.isEmpty()) { + return name; + } + return Character.toUpperCase(name.charAt(0)) + name.substring(1, name.length()); + } + + public static String firstLetterLowerCase(String name) { + if (name == null || name.isEmpty()) { + return name; + } + return Character.toLowerCase(name.charAt(0)) + name.substring(1, name.length()); + } + + private static ExecutableElement getDeclaredMethod(TypeElement element, String name, TypeMirror[] params) { + List<ExecutableElement> methods = ElementFilter.methodsIn(element.getEnclosedElements()); + method: for (ExecutableElement method : methods) { + if (!method.getSimpleName().toString().equals(name)) { + continue; + } + if (method.getParameters().size() != params.length) { + continue; + } + for (int i = 0; i < params.length; i++) { + TypeMirror param1 = params[i]; + TypeMirror param2 = method.getParameters().get(i).asType(); + if (!getQualifiedName(param1).equals(getQualifiedName(param2))) { + continue method; + } + } + return method; + } + return null; + } + + private static boolean isDeclaredMethod(TypeElement element, String name, TypeMirror[] params) { + return getDeclaredMethod(element, name, params) != null; + } + + public static boolean isDeclaredMethodInSuperType(TypeElement element, String name, TypeMirror[] params) { + List<TypeElement> superElements = getSuperTypes(element); + + for (TypeElement typeElement : superElements) { + if (isDeclaredMethod(typeElement, name, params)) { + return true; + } + } + return false; + } + + private static ExecutableElement getDeclaredMethodInSuperType(TypeElement element, String name, TypeMirror[] params) { + List<TypeElement> superElements = getSuperTypes(element); + + for (TypeElement typeElement : superElements) { + ExecutableElement declared = getDeclaredMethod(typeElement, name, params); + if (declared != null) { + return declared; + } + } + return null; + } + + public static ExecutableElement getDeclaredMethodRecursive(TypeElement element, String name, TypeMirror[] params) { + ExecutableElement declared = getDeclaredMethod(element, name, params); + if (declared != null) { + return declared; + } + return getDeclaredMethodInSuperType(element, name, params); + } + + public static boolean typeEquals(TypeMirror type1, TypeMirror type2) { + if (type1 == null && type2 == null) { + return true; + } else if (type1 == null || type2 == null) { + return false; + } + String qualified1 = getQualifiedName(type1); + String qualified2 = getQualifiedName(type2); + return qualified1.equals(qualified2); + } + + + public static int compareByTypeHierarchy(TypeMirror t1, TypeMirror t2) { + if (typeEquals(t1, t2)) { + return 0; + } + Set<String> t1SuperSet = new HashSet<>(getQualifiedSuperTypeNames(fromTypeMirror(t1))); + if (t1SuperSet.contains(getQualifiedName(t2))) { + return -1; + } + + Set<String> t2SuperSet = new HashSet<>(getQualifiedSuperTypeNames(fromTypeMirror(t2))); + if (t2SuperSet.contains(getQualifiedName(t1))) { + return 1; + } + return 0; + } + + + public static boolean canThrowType(List<? extends TypeMirror> thrownTypes, TypeMirror exceptionType) { + if (Utils.containsType(thrownTypes, exceptionType)) { + return true; + } + + if (isRuntimeException(exceptionType)) { + return true; + } + + // search for any supertypes + TypeElement exceptionTypeElement = fromTypeMirror(exceptionType); + List<TypeElement> superTypes = getSuperTypes(exceptionTypeElement); + for (TypeElement typeElement : superTypes) { + if (Utils.containsType(thrownTypes, typeElement.asType())) { + return true; + } + } + + return false; + } + + private static boolean isRuntimeException(TypeMirror type) { + Set<String> typeSuperSet = new HashSet<>(getQualifiedSuperTypeNames(fromTypeMirror(type))); + String typeName = getQualifiedName(type); + if (!typeSuperSet.contains(Throwable.class.getCanonicalName()) && !typeName.equals(Throwable.class.getCanonicalName())) { + throw new IllegalArgumentException("Given does not extend Throwable."); + } + return typeSuperSet.contains(RuntimeException.class.getCanonicalName()) || typeName.equals(RuntimeException.class.getCanonicalName()); + } + + private static boolean containsType(Collection<? extends TypeMirror> collection, TypeMirror type) { + for (TypeMirror otherTypeMirror : collection) { + if (typeEquals(otherTypeMirror, type)) { + return true; + } + } + return false; + } + +}