/**
* Current handler inserts closing curly brace (right brace) if necessary. There is a possible
* case that it should be located more than one line forward.
*
* <p><b>Example</b>
*
* <pre>
* if (test1()) {
* } else {<caret> if (test2()) {
* foo();
* }
* </pre>
*
* <p>We want to get this after the processing:
*
* <pre>
* if (test1()) {
* } else {
* if (test2()) {
* foo();
* }
* }
* </pre>
*
* I.e. closing brace should be inserted two lines below current caret line. Hence, we need to
* calculate correct offset to use for brace inserting. This method is responsible for that.
*
* <p>In essence it inspects PSI structure and finds PSE elements with the max length that starts
* at caret offset. End offset of that element is used as an insertion point.
*
* @param file target PSI file
* @param text text from the given file
* @param offset target offset where line feed will be inserted
* @return offset to use for inserting closing brace
*/
protected int calculateOffsetToInsertClosingBrace(
PsiFile file, CharSequence text, final int offset) {
PsiElement element = PsiUtilCore.getElementAtOffset(file, offset);
ASTNode node = element.getNode();
if (node != null && node.getElementType() == TokenType.WHITE_SPACE) {
return CharArrayUtil.shiftForwardUntil(text, offset, "\n");
}
for (PsiElement parent = element.getParent(); parent != null; parent = parent.getParent()) {
ASTNode parentNode = parent.getNode();
if (parentNode == null || parentNode.getStartOffset() != offset) {
break;
}
element = parent;
}
if (element.getTextOffset() != offset) {
return CharArrayUtil.shiftForwardUntil(text, offset, "\n");
}
return element.getTextRange().getEndOffset();
}
@Nullable
private PsiComment createJavaDocStub(
final CodeInsightSettings settings, final PsiComment comment, final Project project) {
if (settings.JAVADOC_STUB_ON_ENTER) {
final DocumentationProvider langDocumentationProvider =
LanguageDocumentation.INSTANCE.forLanguage(comment.getParent().getLanguage());
@Nullable final CodeDocumentationProvider docProvider;
if (langDocumentationProvider instanceof CompositeDocumentationProvider) {
docProvider =
((CompositeDocumentationProvider) langDocumentationProvider)
.getFirstCodeDocumentationProvider();
} else {
docProvider =
langDocumentationProvider instanceof CodeDocumentationProvider
? (CodeDocumentationProvider) langDocumentationProvider
: null;
}
if (docProvider != null) {
if (docProvider.findExistingDocComment(comment) != comment) return comment;
String docStub = docProvider.generateDocumentationContentStub(comment);
if (docStub != null && docStub.length() != 0) {
myOffset =
CharArrayUtil.shiftForwardUntil(
myDocument.getCharsSequence(), myOffset, LINE_SEPARATOR);
myOffset =
CharArrayUtil.shiftForward(myDocument.getCharsSequence(), myOffset, LINE_SEPARATOR);
myDocument.insertString(myOffset, docStub);
}
}
PsiDocumentManager.getInstance(project).commitAllDocuments();
return PsiTreeUtil.getNonStrictParentOfType(
myFile.findElementAt(myOffset), PsiComment.class);
}
return comment;
}
/**
* There is a possible case that target code block already starts with the empty line:
*
* <pre>
* void test(int i) {
* if (i > 1[caret]) {
*
* }
* }
* </pre>
*
* We want just move caret to correct position at that empty line without creating additional
* empty line then.
*
* @param editor target editor
* @param codeBlock target code block to which new empty line is going to be inserted
* @param element target element under caret
* @return <code>true</code> if it was found out that the given code block starts with the empty
* line and caret is pointed to correct position there, i.e. no additional processing is
* required; <code>false</code> otherwise
*/
private static boolean processExistingBlankLine(
@NotNull Editor editor, @Nullable PsiCodeBlock codeBlock, @Nullable PsiElement element) {
PsiWhiteSpace whiteSpace = null;
if (codeBlock == null) {
if (element != null) {
final PsiElement next = PsiTreeUtil.nextLeaf(element);
if (next instanceof PsiWhiteSpace) {
whiteSpace = (PsiWhiteSpace) next;
}
}
} else {
whiteSpace = PsiTreeUtil.findChildOfType(codeBlock, PsiWhiteSpace.class);
if (whiteSpace == null) {
return false;
}
PsiElement lbraceCandidate = whiteSpace.getPrevSibling();
if (lbraceCandidate == null) {
return false;
}
ASTNode node = lbraceCandidate.getNode();
if (node == null || node.getElementType() != JavaTokenType.LBRACE) {
return false;
}
}
if (whiteSpace == null) {
return false;
}
final TextRange textRange = whiteSpace.getTextRange();
final Document document = editor.getDocument();
final CharSequence whiteSpaceText =
document
.getCharsSequence()
.subSequence(textRange.getStartOffset(), textRange.getEndOffset());
if (StringUtil.countNewLines(whiteSpaceText) < 2) {
return false;
}
int i = CharArrayUtil.shiftForward(whiteSpaceText, 0, " \t");
if (i >= whiteSpaceText.length() - 1) {
assert false
: String.format(
"code block: %s, white space: %s",
codeBlock == null ? "undefined" : codeBlock.getTextRange(),
whiteSpace.getTextRange());
return false;
}
editor.getCaretModel().moveToOffset(i + 1 + textRange.getStartOffset());
EditorActionManager actionManager = EditorActionManager.getInstance();
EditorActionHandler actionHandler =
actionManager.getActionHandler(IdeActions.ACTION_EDITOR_MOVE_LINE_END);
final DataContext dataContext = DataManager.getInstance().getDataContext(editor.getComponent());
if (dataContext == null) {
i = CharArrayUtil.shiftForwardUntil(whiteSpaceText, i, "\n");
if (i >= whiteSpaceText.length()) {
i = whiteSpaceText.length();
}
editor.getCaretModel().moveToOffset(i + textRange.getStartOffset());
} else {
actionHandler.execute(editor, dataContext);
}
return true;
}
private void generateJavadoc(CodeDocumentationAwareCommenter commenter)
throws IncorrectOperationException {
CodeInsightSettings settings = CodeInsightSettings.getInstance();
StringBuilder buffer = new StringBuilder();
final String docCommentLinePrefix = commenter.getDocumentationCommentLinePrefix();
if (docCommentLinePrefix == null) {
return;
}
// There are at least two approaches for completing javadoc in case there is a text between
// current caret position and line end:
// 1. Move that tail text below the javadoc. Use-case:
// Before:
// /**<caret>public void foo() {}
// After:
// /**
// */
// public void foo() {}
// 2. Move the tail text inside the javadoc. Use-case:
// Before:
// /**This is <caret>javadoc description
// After:
// /** This is
// * javadoc description
// */
// The later is most relevant when we have 'auto wrap when typing reaches right margin' option
// set, i.e. user starts javadoc
// and types until right margin is reached. We want the wrapped text tail to be located inside
// javadoc and continue typing
// inside it. So, we have a control flow branch below that does the trick.
buffer.append(docCommentLinePrefix);
if (DataManager.getInstance()
.loadFromDataContext(
myDataContext, AutoHardWrapHandler.AUTO_WRAP_LINE_IN_PROGRESS_KEY)
== Boolean.TRUE) {
myDocument.insertString(myOffset, buffer);
// We create new buffer here because the one referenced by current 'buffer' variable value
// may be already referenced at another
// place (e.g. 'undo' processing stuff).
buffer =
new StringBuilder(LINE_SEPARATOR).append(commenter.getDocumentationCommentSuffix());
int line = myDocument.getLineNumber(myOffset);
myOffset = myDocument.getLineEndOffset(line);
} else {
buffer.append(LINE_SEPARATOR);
buffer.append(commenter.getDocumentationCommentSuffix());
}
PsiComment comment = createComment(buffer, settings);
if (comment == null) {
return;
}
myOffset = comment.getTextRange().getStartOffset();
CharSequence text = myDocument.getCharsSequence();
myOffset = CharArrayUtil.shiftForwardUntil(text, myOffset, LINE_SEPARATOR);
myOffset = CharArrayUtil.shiftForward(text, myOffset, LINE_SEPARATOR);
myOffset = CharArrayUtil.shiftForwardUntil(text, myOffset, docCommentLinePrefix) + 1;
removeTrailingSpaces(myDocument, myOffset);
if (!CodeStyleSettingsManager.getSettings(getProject()).JD_LEADING_ASTERISKS_ARE_ENABLED) {
LOG.assertTrue(
CharArrayUtil.regionMatches(
myDocument.getCharsSequence(),
myOffset - docCommentLinePrefix.length(),
docCommentLinePrefix));
myDocument.deleteString(myOffset - docCommentLinePrefix.length(), myOffset);
myOffset--;
} else {
myDocument.insertString(myOffset, " ");
myOffset++;
}
PsiDocumentManager.getInstance(getProject()).commitAllDocuments();
}
@Override
public void run() {
CaretModel caretModel = myEditor.getCaretModel();
try {
final CharSequence chars = myDocument.getCharsSequence();
int i = CharArrayUtil.shiftBackwardUntil(chars, myOffset - 1, LINE_SEPARATOR) - 1;
i = CharArrayUtil.shiftBackwardUntil(chars, i, LINE_SEPARATOR) + 1;
if (i < 0) i = 0;
int lineStart = CharArrayUtil.shiftForward(chars, i, " \t");
CodeDocumentationUtil.CommentContext commentContext =
CodeDocumentationUtil.tryParseCommentContext(myFile, chars, myOffset, lineStart);
PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(getProject());
if (commentContext.docStart) {
PsiElement element = myFile.findElementAt(commentContext.lineStart);
final String text = element.getText();
final PsiElement parent = element.getParent();
if (text.equals(commentContext.commenter.getDocumentationCommentPrefix())
&& isDocComment(parent, commentContext.commenter)
|| text.startsWith(commentContext.commenter.getDocumentationCommentPrefix())
&& element instanceof PsiComment) {
PsiComment comment =
isDocComment(parent, commentContext.commenter)
? (PsiComment) parent
: (PsiComment) element;
int commentEnd = comment.getTextRange().getEndOffset();
if (myOffset >= commentEnd) {
commentContext.docStart = false;
} else {
if (isCommentComplete(comment, commentContext.commenter, myEditor)) {
if (myOffset >= commentEnd) {
commentContext.docAsterisk = false;
commentContext.docStart = false;
} else {
commentContext.docAsterisk = true;
commentContext.docStart = false;
}
} else {
generateJavadoc(commentContext.commenter);
}
}
} else {
commentContext.docStart = false;
}
} else if (commentContext.cStyleStart) {
PsiElement element = myFile.findElementAt(commentContext.lineStart);
if (element instanceof PsiComment
&& commentContext.commenter.getBlockCommentTokenType()
== ((PsiComment) element).getTokenType()) {
final PsiComment comment = (PsiComment) element;
int commentEnd = comment.getTextRange().getEndOffset();
if (myOffset >= commentEnd && myOffset < myFile.getTextRange().getEndOffset()) {
commentContext.docStart = false;
} else {
if (isCommentComplete(comment, commentContext.commenter, myEditor)) {
if (myOffset >= commentEnd) {
commentContext.docAsterisk = false;
commentContext.docStart = false;
} else {
commentContext.docAsterisk = true;
commentContext.docStart = false;
}
} else {
final int currentEndOfLine = CharArrayUtil.shiftForwardUntil(chars, myOffset, "\n");
myDocument.insertString(
currentEndOfLine, " " + commentContext.commenter.getBlockCommentSuffix());
int lstart = CharArrayUtil.shiftBackwardUntil(chars, myOffset, "\n");
myDocument.insertString(currentEndOfLine, chars.subSequence(lstart, myOffset));
psiDocumentManager.commitDocument(myDocument);
}
}
} else {
commentContext.docStart = false;
}
}
String indentInsideJavadoc = null;
if (myOffset < myDocument.getTextLength()) {
final int line = myDocument.getLineNumber(myOffset);
if (line > 0 && (commentContext.docAsterisk || commentContext.docStart)) {
indentInsideJavadoc =
CodeDocumentationUtil.getIndentInsideJavadoc(
myDocument, myDocument.getLineStartOffset(line - 1));
}
}
if (commentContext.docAsterisk) {
commentContext.docAsterisk =
insertDocAsterisk(
commentContext.lineStart,
commentContext.docAsterisk,
!StringUtil.isEmpty(indentInsideJavadoc),
commentContext.commenter);
}
boolean docIndentApplied = false;
CodeInsightSettings codeInsightSettings = CodeInsightSettings.getInstance();
if (codeInsightSettings.SMART_INDENT_ON_ENTER
|| myForceIndent
|| commentContext.docStart
|| commentContext.docAsterisk
|| commentContext.slashSlash) {
final CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(getProject());
myOffset = codeStyleManager.adjustLineIndent(myFile, myOffset);
psiDocumentManager.commitAllDocuments();
if (!StringUtil.isEmpty(indentInsideJavadoc) && myOffset < myDocument.getTextLength()) {
myDocument.insertString(myOffset + 1, indentInsideJavadoc);
myOffset += indentInsideJavadoc.length();
docIndentApplied = true;
}
if (myForceIndent && indentInsideJavadoc != null) {
int indentSize =
CodeStyleSettingsManager.getSettings(myProject).getIndentSize(myFile.getFileType());
myDocument.insertString(myOffset + 1, StringUtil.repeatSymbol(' ', indentSize));
myCaretAdvance += indentSize;
}
}
if ((commentContext.docAsterisk || commentContext.docStart || commentContext.slashSlash)
&& !docIndentApplied) {
if (myInsertSpace) {
if (myOffset == myDocument.getTextLength()) {
myDocument.insertString(myOffset, " ");
}
myDocument.insertString(myOffset + 1, " ");
}
final char c = myDocument.getCharsSequence().charAt(myOffset);
if (c != '\n') {
myOffset += 1;
}
}
if ((commentContext.docAsterisk || commentContext.slashSlash) && !commentContext.docStart) {
myCaretAdvance +=
commentContext.slashSlash
? commentContext.commenter.getLineCommentPrefix().length()
: 1;
}
} catch (IncorrectOperationException e) {
LOG.error(e);
}
myOffset = Math.min(myOffset, myDocument.getTextLength());
caretModel.moveToOffset(myOffset);
myEditor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
myEditor.getSelectionModel().removeSelection();
if (myCaretAdvance != 0) {
LogicalPosition caretPosition = caretModel.getLogicalPosition();
LogicalPosition pos =
new LogicalPosition(caretPosition.line, caretPosition.column + myCaretAdvance);
caretModel.moveToLogicalPosition(pos);
}
}
