/*
* Copyright 2000-2013 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 com.intellij.coldFusion.model.psi;
import com.intellij.coldFusion.model.CfmlScopesInfo;
import com.intellij.coldFusion.model.lexer.CfscriptTokenTypes;
import com.intellij.coldFusion.model.parsers.CfmlElementTypes;
import com.intellij.lang.ASTNode;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiType;
import com.intellij.psi.impl.RenameableFakePsiElement;
import com.intellij.util.IncorrectOperationException;
import com.intellij.util.PlatformIcons;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
public class CfmlAssignmentExpression extends CfmlCompositeElement implements CfmlExpression {
private AssignedVariable myAssignedVariable = null;
private boolean myVariableWasInitialized = false;
public CfmlAssignmentExpression(@NotNull ASTNode node) {
super(node);
}
@Nullable
private AssignedVariable createAssignedVariable() {
CfmlReferenceExpression varElement = getAssignedVariableElement();
if (varElement == null) {
return null;
}
CfmlImplicitVariable var = getContainingFile().findImplicitVariable(varElement.getText());
if (var != null && var.getTextRange().getStartOffset() < this.getTextRange().getStartOffset()) {
return null;
}
return new AssignedVariable(findChildByType(CfscriptTokenTypes.VAR_KEYWORD) != null);
}
@Nullable
public CfmlReferenceExpression getAssignedVariableElement() {
if (getFirstChild() instanceof CfmlArgumentNameReference) return (CfmlReferenceExpression)getFirstChild();
PsiElement element = findChildByType(CfmlElementTypes.REFERENCE_EXPRESSION);
if (element == null || !(element instanceof CfmlReferenceExpression)) {
return null;
}
return (CfmlReferenceExpression)element;
}
@Nullable
private PsiType getAssignedVariableElementType() {
final CfmlExpression e = getRightHandExpr();
return e != null ? e.getPsiType() : null;
}
@Nullable
public CfmlExpression getRightHandExpr() {
CfmlExpression[] expressions = findChildrenByClass(CfmlExpression.class);
if (expressions.length != 2) {
return null;
}
return expressions[1];
}
@Nullable
public CfmlVariable getAssignedVariable() {
if (!myVariableWasInitialized) {
myVariableWasInitialized = true;
myAssignedVariable = createAssignedVariable();
}
return myAssignedVariable;
}
public PsiType getPsiType() {
return getAssignedVariableElementType();
}
public class AssignedVariable extends RenameableFakePsiElement implements CfmlVariable, CfmlScopeProvider {
private boolean myIsDefinition;
public AssignedVariable(boolean isDefinition) {
super(CfmlAssignmentExpression.this.getContainingFile());
myIsDefinition = isDefinition;
}
@Nullable
public CfmlExpression getRightHandExpr() {
return CfmlAssignmentExpression.this.getRightHandExpr();
}
@NotNull
public String getName() {
final CfmlReferenceExpression expression = getAssignedVariableElement();
if (expression == null) {
return "";
}
final String variableName = expression.getText();
final String scopeName = getScopeName();
if (scopeName != null && variableName != null && variableName.startsWith(scopeName + ".")) {
return variableName.substring((scopeName + ".").length(), variableName.length());
}
return variableName != null ? expression.getText() : "";
}
public PsiElement setName(@NotNull @NonNls String name) throws IncorrectOperationException {
// no need of renaming definition as it is a reference also and
// will be renamed on handleRename operation of CfmlReferenceExpression
return this;
}
@NotNull
@Override
public PsiElement getNavigationElement() {
final CfmlReferenceExpression expression = getAssignedVariableElement();
assert expression != null;
final PsiElement namedElement = expression.getReferenceNameElement();
return namedElement != null ? namedElement : this;
}
public PsiElement getParent() {
//noinspection ConstantConditions
return getAssignedVariableElement();
}
public String getTypeName() {
return "Unknown type";
}
public Icon getIcon() {
return PlatformIcons.VARIABLE_ICON;
}
public PsiType getPsiType() {
return getAssignedVariableElementType();
}
public CfmlExpression getRightChildExpression() {
CfmlExpression[] expressions = findChildrenByClass(CfmlExpression.class);
if (expressions.length != 2) {
return null;
}
return expressions[1];
}
public String toString() {
return "AssignedVariable " + getName();
}
@Nullable
private String getScopeName() {
final CfmlReferenceExpression expression = getAssignedVariableElement();
if (expression != null) {
final PsiElement scope = expression.getScope();
if (scope != null) {
return scope.getText();
}
}
return null;
}
public int getProvidedScope() {
return CfmlScopesInfo.getScopeByString(getScopeName());
}
public boolean isTrulyDeclaration() {
return myIsDefinition;
}
public PsiElement getNameIdentifier() {
return getNavigationElement();
}
@NotNull
public String getlookUpString() {
final CfmlReferenceExpression expression = getAssignedVariableElement();
if (expression == null) {
return "";
}
return expression.getText();
}
}
}