package com.redhat.ceylon.eclipse.code.correct;
import static com.redhat.ceylon.eclipse.code.correct.LinkedModeCompletionProposal.getCaseTypeProposals;
import static com.redhat.ceylon.eclipse.code.correct.LinkedModeCompletionProposal.getNameProposals;
import java.util.Collection;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.link.ProposalPosition;
import org.eclipse.ltk.core.refactoring.DocumentChange;
import org.eclipse.text.edits.InsertEdit;
import org.eclipse.text.edits.MultiTextEdit;
import org.eclipse.text.edits.ReplaceEdit;
import com.redhat.ceylon.model.typechecker.model.Type;
import com.redhat.ceylon.model.typechecker.model.Unit;
import com.redhat.ceylon.compiler.typechecker.tree.Node;
import com.redhat.ceylon.compiler.typechecker.tree.Tree;
import com.redhat.ceylon.eclipse.code.editor.CeylonEditor;
import com.redhat.ceylon.eclipse.util.LinkedMode;
class AssignToIfIsProposal extends LocalProposal {
protected DocumentChange createChange(IDocument document, Node expanse,
int endIndex) {
DocumentChange change =
new DocumentChange("Assign to If Is", document);
change.setEdit(new MultiTextEdit());
change.addEdit(new InsertEdit(offset, "if (is Nothing " + initialName + " = "));
String terminal = expanse.getEndToken().getText();
if (!terminal.equals(";")) {
change.addEdit(new InsertEdit(endIndex, ") {}"));
exitPos = endIndex+12;
}
else {
change.addEdit(new ReplaceEdit(endIndex-1, 1, ") {}"));
exitPos = endIndex+11;
}
return change;
}
public AssignToIfIsProposal(CeylonEditor ceylonEditor, Tree.CompilationUnit cu,
Node node, int currentOffset) {
super(ceylonEditor, cu, node, currentOffset);
}
protected void addLinkedPositions(IDocument document, Unit unit)
throws BadLocationException {
ProposalPosition typePosition =
new ProposalPosition(document, offset+7, 7, 1,
getCaseTypeProposals(offset+7, unit, type));
ProposalPosition namePosition =
new ProposalPosition(document, offset+15, initialName.length(), 0,
getNameProposals(offset+15, 2, nameProposals));
LinkedMode.addLinkedPosition(linkedModeModel, typePosition);
LinkedMode.addLinkedPosition(linkedModeModel, namePosition);
}
@Override
String[] computeNameProposals(Node expression) {
return super.computeNameProposals(expression);
}
@Override
public String getDisplayString() {
return "Assign expression to 'if (is)' condition";
}
@Override
boolean isEnabled(Type resultType) {
return resultType!=null &&
!resultType.getDeclaration().isFinal();
}
static void addAssignToIfIsProposal(CeylonEditor ceylonEditor, Tree.CompilationUnit cu,
Collection<ICompletionProposal> proposals,
Node node, int currentOffset) {
AssignToIfIsProposal prop =
new AssignToIfIsProposal(ceylonEditor, cu, node, currentOffset);
if (prop.isEnabled()) {
proposals.add(prop);
}
}
}