/*
* Copyright 2013 Guidewire Software, Inc.
*/
package gw.plugin.ij.refactor.introduceVariable;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiExpression;
import com.intellij.psi.PsiVariable;
import com.intellij.refactoring.RefactoringBundle;
import com.intellij.refactoring.introduceVariable.IntroduceVariableSettings;
import com.intellij.refactoring.rename.JavaUnresolvableLocalCollisionDetector;
import com.intellij.refactoring.util.RefactoringUIUtil;
import com.intellij.refactoring.util.occurrences.ExpressionOccurrenceManager;
import com.intellij.util.containers.HashSet;
import com.intellij.util.containers.MultiMap;
/**
* copy of Intellij InputValidator
*/
public class GosuInputValidator implements GosuIntroduceVariableBase.Validator {
private final Project myProject;
private final PsiElement myAnchorStatementIfAll;
private final PsiElement myAnchorStatement;
private final ExpressionOccurrenceManager myOccurenceManager;
private final GosuIntroduceVariableBase myIntroduceVariableBase;
public boolean isOK(IntroduceVariableSettings settings) {
String name = settings.getEnteredName();
final PsiElement anchor;
final boolean replaceAllOccurrences = settings.isReplaceAllOccurrences();
if (replaceAllOccurrences) {
anchor = myAnchorStatementIfAll;
} else {
anchor = myAnchorStatement;
}
final PsiElement scope = anchor.getParent();
if (scope == null) {
return true;
}
final MultiMap<PsiElement, String> conflicts = new MultiMap<>();
final HashSet<PsiVariable> reportedVariables = new HashSet<>();
JavaUnresolvableLocalCollisionDetector.CollidingVariableVisitor visitor = new JavaUnresolvableLocalCollisionDetector.CollidingVariableVisitor() {
public void visitCollidingElement(PsiVariable collidingVariable) {
if (!reportedVariables.contains(collidingVariable)) {
reportedVariables.add(collidingVariable);
String message = RefactoringBundle.message("introduced.variable.will.conflict.with.0", RefactoringUIUtil.getDescription(collidingVariable, true));
conflicts.putValue(collidingVariable, message);
}
}
};
JavaUnresolvableLocalCollisionDetector.visitLocalsCollisions(anchor, name, scope, anchor, visitor);
if (replaceAllOccurrences) {
final PsiExpression[] occurences = myOccurenceManager.getOccurrences();
for (PsiExpression occurence : occurences) {
GosuIntroduceVariableBase.checkInLoopCondition(occurence, conflicts);
}
} else {
GosuIntroduceVariableBase.checkInLoopCondition(myOccurenceManager.getMainOccurence(), conflicts);
}
if (conflicts.size() > 0) {
return myIntroduceVariableBase.reportConflicts(conflicts, myProject, settings);
} else {
return true;
}
}
public GosuInputValidator(final GosuIntroduceVariableBase introduceVariableBase,
Project project,
PsiElement anchorStatementIfAll,
PsiElement anchorStatement,
ExpressionOccurrenceManager occurenceManager) {
myIntroduceVariableBase = introduceVariableBase;
myProject = project;
myAnchorStatementIfAll = anchorStatementIfAll;
myAnchorStatement = anchorStatement;
myOccurenceManager = occurenceManager;
}
}