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A packaging of the IntelliJ Community Edition groovy-psi library.
This is release number 1 of trunk branch 142.
The newest version!
/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.plugins.groovy.lang.psi.util;
import com.intellij.codeInsight.NullableNotNullManager;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.*;
import com.intellij.psi.codeStyle.JavaCodeStyleManager;
import com.intellij.psi.codeStyle.VariableKind;
import com.intellij.psi.util.PsiUtil;
import com.intellij.util.ArrayUtil;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElement;
import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElementFactory;
import org.jetbrains.plugins.groovy.lang.psi.api.GroovyResolveResult;
import org.jetbrains.plugins.groovy.lang.psi.api.auxiliary.modifiers.GrModifier;
import org.jetbrains.plugins.groovy.lang.psi.api.auxiliary.modifiers.GrModifierList;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrField;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrCodeBlock;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.params.GrParameter;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrAccessorMethod;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.typedef.members.GrMethod;
import org.jetbrains.plugins.groovy.lang.psi.impl.PsiImplUtil;
import org.jetbrains.plugins.groovy.lang.resolve.ResolveUtil;
import org.jetbrains.plugins.groovy.lang.resolve.processors.AccessorResolverProcessor;
import java.beans.Introspector;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* @author ilyas
*/
public class GroovyPropertyUtils {
private static final Logger LOG = Logger.getInstance(GroovyPropertyUtils.class);
public static final String IS_PREFIX = "is";
public static final String GET_PREFIX = "get";
public static final String SET_PREFIX = "set";
private GroovyPropertyUtils() {
}
public static PsiMethod[] getAllSettersByField(PsiField field) {
return getAllSetters(field.getContainingClass(), field.getName(), field.hasModifierProperty(PsiModifier.STATIC), false);
}
@NotNull
public static PsiMethod[] getAllGettersByField(PsiField field) {
return getAllGetters(field.getContainingClass(), field.getName(), field.hasModifierProperty(PsiModifier.STATIC), false);
}
@Nullable
public static PsiMethod findSetterForField(PsiField field) {
final PsiClass containingClass = field.getContainingClass();
final String propertyName = field.getName();
final boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);
return findPropertySetter(containingClass, propertyName, isStatic, true);
}
@Nullable
public static PsiMethod findGetterForField(PsiField field) {
final PsiClass containingClass = field.getContainingClass();
final String propertyName = field.getName();
final boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);
return findPropertyGetter(containingClass, propertyName, isStatic, true);
}
@Nullable
public static PsiMethod findPropertySetter(@Nullable PsiType type, String propertyName, @NotNull GroovyPsiElement context) {
final String setterName = getSetterName(propertyName);
if (type == null) {
final GrExpression fromText = GroovyPsiElementFactory.getInstance(context.getProject()).createExpressionFromText("this", context);
return findPropertySetter(fromText.getType(), propertyName, context);
}
final AccessorResolverProcessor processor = new AccessorResolverProcessor(setterName, propertyName, context, false);
ResolveUtil.processAllDeclarations(type, processor, ResolveState.initial(), context);
final GroovyResolveResult[] setterCandidates = processor.getCandidates();
return PsiImplUtil.extractUniqueElement(setterCandidates);
}
@Nullable
public static PsiMethod findPropertySetter(PsiClass aClass, String propertyName, boolean isStatic, boolean checkSuperClasses) {
if (aClass == null) return null;
PsiMethod[] methods;
if (checkSuperClasses) {
methods = aClass.getAllMethods();
}
else {
methods = aClass.getMethods();
}
for (PsiMethod method : methods) {
if (method.hasModifierProperty(PsiModifier.STATIC) != isStatic) continue;
if (isSimplePropertySetter(method)) {
if (propertyName.equals(getPropertyNameBySetter(method))) {
return method;
}
}
}
return null;
}
@NotNull
public static PsiMethod[] getAllGetters(PsiClass aClass, @NotNull String propertyName, boolean isStatic, boolean checkSuperClasses) {
if (aClass == null) return PsiMethod.EMPTY_ARRAY;
PsiMethod[] methods;
if (checkSuperClasses) {
methods = aClass.getAllMethods();
}
else {
methods = aClass.getMethods();
}
List result = new ArrayList();
for (PsiMethod method : methods) {
if (method.hasModifierProperty(PsiModifier.STATIC) != isStatic) continue;
if (isSimplePropertyGetter(method)) {
if (propertyName.equals(getPropertyNameByGetter(method))) {
result.add(method);
}
}
}
return result.toArray(new PsiMethod[result.size()]);
}
@NotNull
public static PsiMethod[] getAllSetters(PsiClass aClass, @NotNull String propertyName, boolean isStatic, boolean checkSuperClasses) {
if (aClass == null) return PsiMethod.EMPTY_ARRAY;
PsiMethod[] methods;
if (checkSuperClasses) {
methods = aClass.getAllMethods();
}
else {
methods = aClass.getMethods();
}
List result = new ArrayList();
for (PsiMethod method : methods) {
if (method.hasModifierProperty(PsiModifier.STATIC) != isStatic) continue;
if (isSimplePropertySetter(method)) {
if (propertyName.equals(getPropertyNameBySetter(method))) {
result.add(method);
}
}
}
return result.toArray(new PsiMethod[result.size()]);
}
@Nullable
public static PsiMethod findPropertyGetter(@Nullable PsiClass aClass,
String propertyName,
@Nullable Boolean isStatic,
boolean checkSuperClasses) {
if (aClass == null) return null;
PsiMethod[] methods;
if (checkSuperClasses) {
methods = aClass.getAllMethods();
}
else {
methods = aClass.getMethods();
}
for (PsiMethod method : methods) {
if (isStatic != null && method.hasModifierProperty(PsiModifier.STATIC) != isStatic) continue;
if (isSimplePropertyGetter(method)) {
if (propertyName.equals(getPropertyNameByGetter(method))) {
return method;
}
}
}
return null;
}
public static boolean isSimplePropertyAccessor(PsiMethod method) {
return isSimplePropertyGetter(method) || isSimplePropertySetter(method);
}//do not check return type
public static boolean isSimplePropertyGetter(PsiMethod method) {
return isSimplePropertyGetter(method, null);
}//do not check return type
public static boolean isSimplePropertyGetter(PsiMethod method, @Nullable String propertyName) {
if (method == null || method.isConstructor()) return false;
if (method.getParameterList().getParametersCount() != 0) return false;
if (!isGetterName(method.getName())) return false;
if (method.getName().startsWith(IS_PREFIX) && !PsiType.BOOLEAN.equals(method.getReturnType())) {
return false;
}
if (method.getReturnType() == PsiType.VOID) return false;
if (propertyName == null) return true;
final String byGetter = getPropertyNameByGetter(method);
return propertyName.equals(byGetter) || (!isPropertyName(byGetter) && propertyName.equals(
getPropertyNameByGetterName(method.getName(), PsiType.BOOLEAN.equals(method.getReturnType()))));
}
public static boolean isSimplePropertySetter(PsiMethod method) {
return isSimplePropertySetter(method, null);
}
public static boolean isSimplePropertySetter(PsiMethod method, @Nullable String propertyName) {
if (method == null || method.isConstructor()) return false;
if (method.getParameterList().getParametersCount() != 1) return false;
if (!isSetterName(method.getName())) return false;
if (propertyName==null) return true;
final String bySetter = getPropertyNameBySetter(method);
return propertyName.equals(bySetter) || (!isPropertyName(bySetter) && propertyName.equals(getPropertyNameBySetterName(method.getName())));
}
@Nullable
public static String getPropertyNameByGetter(PsiMethod getterMethod) {
if (getterMethod instanceof GrAccessorMethod) {
return ((GrAccessorMethod)getterMethod).getProperty().getName();
}
@NonNls String methodName = getterMethod.getName();
final boolean isPropertyBoolean = PsiType.BOOLEAN.equals(getterMethod.getReturnType());
return getPropertyNameByGetterName(methodName, isPropertyBoolean);
}
@Nullable
public static String getPropertyNameByGetterName(@NotNull String methodName, boolean canBeBoolean) {
if (methodName.startsWith(GET_PREFIX) && methodName.length() > 3) {
return decapitalize(methodName.substring(3));
}
if (canBeBoolean && methodName.startsWith(IS_PREFIX) && methodName.length() > 2) {
return decapitalize(methodName.substring(2));
}
return null;
}
@Nullable
public static String getPropertyNameBySetter(PsiMethod setterMethod) {
if (setterMethod instanceof GrAccessorMethod) {
return ((GrAccessorMethod)setterMethod).getProperty().getName();
}
@NonNls String methodName = setterMethod.getName();
return getPropertyNameBySetterName(methodName);
}
@Nullable
public static String getPropertyNameBySetterName(@NotNull String methodName) {
if (methodName.startsWith(SET_PREFIX) && methodName.length() > 3) {
return StringUtil.decapitalize(methodName.substring(3));
}
else {
return null;
}
}
@Nullable
public static String getPropertyNameByAccessorName(String accessorName) {
if (isGetterName(accessorName)) {
return getPropertyNameByGetterName(accessorName, true);
}
else if (isSetterName(accessorName)) {
return getPropertyNameBySetterName(accessorName);
}
return null;
}
@Nullable
public static String getPropertyName(PsiMethod accessor) {
if (isSimplePropertyGetter(accessor)) return getPropertyNameByGetter(accessor);
if (isSimplePropertySetter(accessor)) return getPropertyNameBySetter(accessor);
return null;
}
public static boolean isGetterName(@NotNull String name) {
int prefixLength;
if (name.startsWith(GET_PREFIX)) {
prefixLength = 3;
}
else if (name.startsWith(IS_PREFIX)) {
prefixLength = 2;
}
else {
return false;
}
if (name.length() == prefixLength) return false;
if (isUpperCase(name.charAt(prefixLength))) return true;
return name.length() > prefixLength + 1 && isUpperCase(name.charAt(prefixLength + 1));
}
public static String getGetterNameNonBoolean(@NotNull String name) {
return getAccessorName(GET_PREFIX, name);
}
public static String getGetterNameBoolean(@NotNull String name) {
return getAccessorName(IS_PREFIX, name);
}
public static String getSetterName(@NotNull String name) {
return getAccessorName("set", name);
}
public static String getAccessorName(String prefix, String name) {
if (name.isEmpty()) return prefix;
StringBuilder sb = new StringBuilder();
sb.append(prefix);
if (name.length() > 1 && Character.isUpperCase(name.charAt(1))) {
sb.append(name);
}
else {
sb.append(Character.toUpperCase(name.charAt(0)));
sb.append(name, 1, name.length());
}
return sb.toString();
}
/**
* Returns getter names in priority order
* @param name property name
* @return getter names
*/
public static String[] suggestGettersName(@NotNull String name) {
return new String[]{getGetterNameBoolean(name), getGetterNameNonBoolean(name)};
}
public static boolean isPropertyName(String name) {
if (name.isEmpty()) return false;
if (Character.isUpperCase(name.charAt(0)) && (name.length() == 1 || !Character.isUpperCase(name.charAt(1)))) return false;
return true;
}
public static String[] suggestSettersName(@NotNull String name) {
return new String[]{getSetterName(name)};
}
public static boolean isSetterName(String name) {
return name != null
&& name.startsWith(SET_PREFIX)
&& name.length() > 3
&& (isUpperCase(name.charAt(3)) || (name.length() > 4 && isUpperCase(name.charAt(3))));
}
public static boolean isProperty(@Nullable PsiClass aClass, @Nullable String propertyName, boolean isStatic) {
if (aClass == null || propertyName == null) return false;
final PsiField field = aClass.findFieldByName(propertyName, true);
if (field instanceof GrField && ((GrField)field).isProperty() && field.hasModifierProperty(PsiModifier.STATIC) == isStatic) return true;
final PsiMethod getter = findPropertyGetter(aClass, propertyName, isStatic, true);
if (getter != null && getter.hasModifierProperty(PsiModifier.PUBLIC)) return true;
final PsiMethod setter = findPropertySetter(aClass, propertyName, isStatic, true);
return setter != null && setter.hasModifierProperty(PsiModifier.PUBLIC);
}
public static boolean isProperty(GrField field) {
final PsiClass clazz = field.getContainingClass();
return isProperty(clazz, field.getName(), field.hasModifierProperty(PsiModifier.STATIC));
}
private static boolean isUpperCase(char c) {
return Character.toUpperCase(c) == c;
}
/*public static boolean canBePropertyName(String name) {
return !(name.length() > 1 && Character.isUpperCase(name.charAt(1)) && Character.isLowerCase(name.charAt(0)));
}*/
public static String capitalize(String s) {
if (s.isEmpty()) return s;
if (s.length() == 1) return s.toUpperCase();
if (Character.isUpperCase(s.charAt(1))) return s;
final char[] chars = s.toCharArray();
chars[0] = Character.toUpperCase(chars[0]);
return new String(chars);
}
public static String decapitalize(String s) {
return Introspector.decapitalize(s);
}
@Nullable
public static PsiField findFieldForAccessor(PsiMethod accessor, boolean checkSuperClasses) {
final PsiClass psiClass = accessor.getContainingClass();
if (psiClass == null) return null;
PsiField field = null;
if (!checkSuperClasses) {
field = psiClass.findFieldByName(getPropertyNameByAccessorName(accessor.getName()), true);
}
else {
final String name = getPropertyNameByAccessorName(accessor.getName());
assert name != null;
final PsiField[] allFields = psiClass.getAllFields();
for (PsiField psiField : allFields) {
if (name.equals(psiField.getName())) {
field = psiField;
break;
}
}
}
if (field == null) return null;
if (field.hasModifierProperty(PsiModifier.STATIC) == accessor.hasModifierProperty(PsiModifier.STATIC)) {
return field;
}
return null;
}
@Nullable
public static String getGetterPrefix(PsiMethod getter) {
final String name = getter.getName();
if (name.startsWith(GET_PREFIX)) return GET_PREFIX;
if (name.startsWith(IS_PREFIX)) return IS_PREFIX;
return null;
}
@Nullable
public static String getSetterPrefix(PsiMethod setter) {
if (setter.getName().startsWith(SET_PREFIX)) return SET_PREFIX;
return null;
}
@Nullable
public static String getAccessorPrefix(PsiMethod method) {
final String prefix = getGetterPrefix(method);
if (prefix != null) return prefix;
return getSetterPrefix(method);
}
public static boolean isAccessorFor(PsiMethod accessor, PsiField field) {
final String accessorName = accessor.getName();
final String fieldName = field.getName();
if (!ArrayUtil.contains(accessorName, suggestGettersName(fieldName)) &&
!ArrayUtil.contains(accessorName, suggestSettersName(fieldName))) {
return false;
}
final PsiClass accessorClass = accessor.getContainingClass();
final PsiClass fieldClass = field.getContainingClass();
if (!field.getManager().areElementsEquivalent(accessorClass, fieldClass)) return false;
return accessor.hasModifierProperty(PsiModifier.STATIC) == field.hasModifierProperty(PsiModifier.STATIC);
}
public static List getFieldAccessors(GrField field) {
List accessors = new ArrayList();
final GrAccessorMethod[] getters = field.getGetters();
Collections.addAll(accessors, getters);
final GrAccessorMethod setter = field.getSetter();
if (setter != null) accessors.add(setter);
return accessors;
}
public static GrMethod generateGetterPrototype(PsiField field) {
GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(field.getProject());
String name = field.getName();
String getName = getGetterNameNonBoolean(field.getName());
try {
PsiType type = field instanceof GrField ? ((GrField)field).getDeclaredType() : field.getType();
GrMethod getter = factory.createMethod(getName, type);
if (field.hasModifierProperty(PsiModifier.STATIC)) {
PsiUtil.setModifierProperty(getter, PsiModifier.STATIC, true);
}
annotateWithNullableStuff(field, getter);
GrCodeBlock body = factory.createMethodBodyFromText("\nreturn " + name + "\n");
getter.getBlock().replace(body);
return getter;
}
catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
public static GrMethod generateSetterPrototype(PsiField field) {
Project project = field.getProject();
JavaCodeStyleManager codeStyleManager = JavaCodeStyleManager.getInstance(project);
GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(project);
String name = field.getName();
boolean isStatic = field.hasModifierProperty(PsiModifier.STATIC);
VariableKind kind = codeStyleManager.getVariableKind(field);
String propertyName = codeStyleManager.variableNameToPropertyName(name, kind);
String setName = getSetterName(field.getName());
final PsiClass containingClass = field.getContainingClass();
try {
GrMethod setMethod = factory.createMethod(setName, PsiType.VOID);
String parameterName = codeStyleManager.propertyNameToVariableName(propertyName, VariableKind.PARAMETER);
final PsiType type = field instanceof GrField ? ((GrField)field).getDeclaredType() : field.getType();
GrParameter param = factory.createParameter(parameterName, type);
annotateWithNullableStuff(field, param);
setMethod.getParameterList().add(param);
PsiUtil.setModifierProperty(setMethod, PsiModifier.STATIC, isStatic);
@NonNls StringBuilder builder = new StringBuilder();
if (name.equals(parameterName)) {
if (!isStatic) {
builder.append("this.");
}
else {
String className = containingClass.getName();
if (className != null) {
builder.append(className);
builder.append(".");
}
}
}
builder.append(name);
builder.append("=");
builder.append(parameterName);
builder.append("\n");
GrCodeBlock body = factory.createMethodBodyFromText(builder.toString());
setMethod.getBlock().replace(body);
return setMethod;
}
catch (IncorrectOperationException e) {
LOG.error(e);
return null;
}
}
private static void annotateWithNullableStuff(final PsiModifierListOwner field, final PsiModifierListOwner listOwner)
throws IncorrectOperationException {
final NullableNotNullManager manager = NullableNotNullManager.getInstance(field.getProject());
final PsiAnnotation notNull = manager.copyNotNullAnnotation(field);
if (notNull != null) {
annotate(listOwner, notNull);
}
else {
final PsiAnnotation nullable = manager.copyNullableAnnotation(field);
if (nullable != null) {
annotate(listOwner, nullable);
}
}
final PsiModifierList modifierList = listOwner.getModifierList();
if (modifierList.hasExplicitModifier(GrModifier.DEF)) {
LOG.assertTrue(modifierList instanceof GrModifierList);
if (modifierList.getAnnotations().length > 0 || ((GrModifierList)modifierList).getModifiers().length > 1) {
((GrModifierList)modifierList).setModifierProperty(GrModifier.DEF, false);
}
}
}
private static void annotate(final PsiModifierListOwner listOwner, final PsiAnnotation annotation)
throws IncorrectOperationException {
final PsiModifierList modifierList = listOwner.getModifierList();
LOG.assertTrue(modifierList != null);
modifierList.addAnnotation(annotation.getQualifiedName());
}
}