public static TextWithImports getEditorText(final Editor editor) {
if (editor == null) {
return null;
}
final Project project = editor.getProject();
if (project == null) return null;
String defaultExpression = editor.getSelectionModel().getSelectedText();
if (defaultExpression == null) {
int offset = editor.getCaretModel().getOffset();
PsiFile psiFile = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument());
if (psiFile != null) {
PsiElement elementAtCursor = psiFile.findElementAt(offset);
if (elementAtCursor != null) {
final EditorTextProvider textProvider =
EditorTextProvider.EP.forLanguage(elementAtCursor.getLanguage());
if (textProvider != null) {
final TextWithImports editorText = textProvider.getEditorText(elementAtCursor);
if (editorText != null) return editorText;
}
}
}
} else {
return new TextWithImportsImpl(CodeFragmentKind.EXPRESSION, defaultExpression);
}
return null;
}
public boolean canMoveTo(SourcePosition position) {
if (!super.canMoveTo(position)) {
return false;
}
final Document document =
PsiDocumentManager.getInstance(getProject()).getDocument(position.getFile());
return canAddLineBreakpoint(myProject, document, position.getLine());
}
public static List<PsiLambdaExpression> collectLambdas(
@NotNull SourcePosition position, final boolean onlyOnTheLine) {
ApplicationManager.getApplication().assertReadAccessAllowed();
PsiFile file = position.getFile();
final int line = position.getLine();
final Document document = PsiDocumentManager.getInstance(file.getProject()).getDocument(file);
if (document == null || line >= document.getLineCount()) {
return Collections.emptyList();
}
PsiElement element = position.getElementAt();
final TextRange lineRange = DocumentUtil.getLineTextRange(document, line);
do {
PsiElement parent = element.getParent();
if (parent == null || (parent.getTextOffset() < lineRange.getStartOffset())) {
break;
}
element = parent;
} while (true);
final List<PsiLambdaExpression> lambdas = new ArrayList<PsiLambdaExpression>(3);
final PsiElementVisitor lambdaCollector =
new JavaRecursiveElementVisitor() {
@Override
public void visitLambdaExpression(PsiLambdaExpression expression) {
super.visitLambdaExpression(expression);
if (!onlyOnTheLine || getFirstElementOnTheLine(expression, document, line) != null) {
lambdas.add(expression);
}
}
};
element.accept(lambdaCollector);
// add initial lambda if we're inside already
PsiElement method = getContainingMethod(element);
if (method instanceof PsiLambdaExpression) {
lambdas.add((PsiLambdaExpression) method);
}
for (PsiElement sibling = getNextElement(element);
sibling != null;
sibling = getNextElement(sibling)) {
if (!intersects(lineRange, sibling)) {
break;
}
sibling.accept(lambdaCollector);
}
return lambdas;
}
public static boolean canAddLineBreakpoint(
Project project, final Document document, final int lineIndex) {
if (lineIndex < 0 || lineIndex >= document.getLineCount()) {
return false;
}
final BreakpointManager breakpointManager =
DebuggerManagerEx.getInstanceEx(project).getBreakpointManager();
final LineBreakpoint breakpointAtLine =
breakpointManager.findBreakpoint(
document, document.getLineStartOffset(lineIndex), CATEGORY);
if (breakpointAtLine != null) {
// there already exists a line breakpoint at this line
return false;
}
PsiDocumentManager.getInstance(project).commitDocument(document);
final boolean[] canAdd = new boolean[] {false};
XDebuggerUtil.getInstance()
.iterateLine(
project,
document,
lineIndex,
new Processor<PsiElement>() {
@Override
public boolean process(PsiElement element) {
if ((element instanceof PsiWhiteSpace)
|| (PsiTreeUtil.getParentOfType(element, PsiComment.class, false) != null)) {
return true;
}
PsiElement child = element;
while (element != null) {
final int offset = element.getTextOffset();
if (offset >= 0) {
if (document.getLineNumber(offset) != lineIndex) {
break;
}
}
child = element;
element = element.getParent();
}
if (child instanceof PsiMethod
&& child.getTextRange().getEndOffset()
>= document.getLineEndOffset(lineIndex)) {
PsiCodeBlock body = ((PsiMethod) child).getBody();
if (body == null) {
canAdd[0] = false;
} else {
PsiStatement[] statements = body.getStatements();
canAdd[0] =
statements.length > 0
&& document.getLineNumber(statements[0].getTextOffset()) == lineIndex;
}
} else {
canAdd[0] = true;
}
return false;
}
});
return canAdd[0];
}