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package org.netbeans.modules.java.hints.errors;
import com.sun.source.tree.ExpressionTree;
import com.sun.source.tree.Tree;
import com.sun.source.tree.VariableTree;
import java.io.IOException;
import javax.lang.model.type.TypeMirror;
import org.netbeans.api.java.source.Task;
import org.netbeans.api.java.source.JavaSource;
import org.netbeans.api.java.source.TreeMaker;
import org.netbeans.api.java.source.JavaSource.Phase;
import org.netbeans.api.java.source.WorkingCopy;
import org.netbeans.spi.editor.hints.ChangeInfo;
import org.netbeans.spi.editor.hints.Fix;
import org.openide.ErrorManager;
import org.openide.util.NbBundle;
/**
* This hint changes the type of a variable to the type of
* initializer expression. In effect it works opposite of
* Add Cast hint.
*
* @author Sandip Chitale
*/
final class ChangeTypeFix implements Fix {
private JavaSource js;
private String treeName;
private String type;
private int position;
public ChangeTypeFix(JavaSource js, String treeName, String type, int position) {
this.js = js;
this.treeName = treeName;
this.type = type;
this.position = position;
}
public ChangeInfo implement() throws IOException {
js.runModificationTask(new Task<WorkingCopy>() {
public void run(final WorkingCopy working) throws IOException {
working.toPhase(Phase.RESOLVED);
TypeMirror[] tm = new TypeMirror[1];
ExpressionTree[] expression = new ExpressionTree[1];
TypeMirror[] expressionType = new TypeMirror[1];
Tree[] leaf = new Tree[1];
ChangeType.computeType(working, position, tm, expression, expressionType, leaf);
if (leaf[0] instanceof VariableTree) {
VariableTree oldVariableTree = ((VariableTree)leaf[0]);
TreeMaker make = working.getTreeMaker();
VariableTree newVariableTree = make.Variable(
oldVariableTree.getModifiers(),
oldVariableTree.getName(),
make.Type(expressionType[0]),
oldVariableTree.getInitializer());
working.rewrite(leaf[0], newVariableTree);
}
}
}).commit();
return null;
}
public String getText() {
return NbBundle.getMessage(ChangeTypeFix.class, "MSG_ChangeVariablesType", treeName, type); // NOI18N
}
}
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