/**
* There is a possible case that 'implements' section is incomplete (e.g. ends with comma). We may
* want to align lbrace to the comma then.
*
* @param alignment block alignment
* @param baseNode base AST node
* @return alignment strategy to use for the given node
*/
private static AlignmentStrategy getAlignmentStrategy(
Alignment alignment, ASTNode baseNode, @NotNull CommonCodeStyleSettings settings) {
if (baseNode.getElementType() != JavaElementType.CLASS
|| !settings.ALIGN_MULTILINE_EXTENDS_LIST) {
return AlignmentStrategy.wrap(alignment);
}
for (ASTNode node = baseNode.getLastChildNode();
node != null;
node = FormatterUtil.getPreviousNonWhitespaceSibling(node)) {
if (node.getElementType() != JavaElementType.IMPLEMENTS_LIST) {
continue;
}
ASTNode lastChildNode = node.getLastChildNode();
if (lastChildNode != null && lastChildNode.getElementType() == TokenType.ERROR_ELEMENT) {
Alignment alignmentToUse = alignment;
if (alignment == null) {
alignmentToUse = Alignment.createAlignment();
}
return AlignmentStrategy.wrap(
alignmentToUse,
false,
JavaTokenType.LBRACE,
JavaElementType.JAVA_CODE_REFERENCE,
node.getElementType());
}
break;
}
return AlignmentStrategy.wrap(alignment);
}
@Override
public boolean shouldCreateStub(ASTNode node) {
// @see getNameIdentifier(ElixirAlias)
boolean shouldCreateStub = false;
ASTNode parent = node.getTreeParent();
IElementType parentElementType = parent.getElementType();
if (parentElementType == ElixirTypes.ACCESS_EXPRESSION) {
ASTNode grandParent = parent.getTreeParent();
IElementType grandParentElementType = grandParent.getElementType();
if (grandParentElementType == ElixirTypes.NO_PARENTHESES_ONE_ARGUMENT) {
ASTNode greatGrandParent = grandParent.getTreeParent();
IElementType greatGrandParentElementType = greatGrandParent.getElementType();
if (greatGrandParentElementType == ElixirTypes.UNMATCHED_UNQUALIFIED_NO_PARENTHESES_CALL
&& greatGrandParent.getFirstChildNode().getText().equals("defmodule")) {
IElementType greatGrandParentLastChildElementType =
greatGrandParent.getLastChildNode().getElementType();
if (greatGrandParentLastChildElementType == ElixirTypes.DO_BLOCK) {
shouldCreateStub = true;
}
}
}
}
return shouldCreateStub;
}
/**
* Tries to find node that is direct or indirect previous node of the given node.
*
* <p>E.g. there is a possible use-case:
*
* <pre>
* n1
* / \
* n21 n22
* | |
* n31 n32
* </pre>
*
* Let's assume that target node is <code>'n32'</code>. 'n31' is assumed to be returned from this
* method then.
*
* <p><b>Note:</b> current method avoids going too deep if found node type is the same as start
* node type
*
* @return direct or indirect previous node of the given one having target type if possible;
* <code>null</code> otherwise
*/
private static boolean findPreviousNode(
AlignmentInColumnsConfig config,
ASTNode from,
IElementType targetType,
boolean processFrom,
boolean processParent,
NodeProcessor processor) {
if (from == null) return false;
for (ASTNode prev = processFrom ? from : from.getTreePrev();
prev != null;
prev = prev.getTreePrev()) {
IElementType prevType = prev.getElementType();
if (prevType == targetType) {
if (processor.targetTypeFound(prev)) return true;
} else if (config.getWhiteSpaceTokenTypes().contains(prevType)) {
if (processor.whitespaceFound(prev)) return true;
}
if (findPreviousNode(config, prev.getLastChildNode(), targetType, true, false, processor))
return true;
}
if (processParent) {
for (ASTNode parent = from.getTreeParent(); parent != null; parent = parent.getTreeParent()) {
if (findPreviousNode(config, parent, targetType, false, false, processor)) return true;
}
}
return false;
}
public static boolean isIncomplete(@Nullable ASTNode node) {
ASTNode lastChild = node == null ? null : node.getLastChildNode();
while (lastChild != null && lastChild.getElementType() == TokenType.WHITE_SPACE) {
lastChild = lastChild.getTreePrev();
}
if (lastChild == null) return false;
if (lastChild.getElementType() == TokenType.ERROR_ELEMENT) return true;
return isIncomplete(lastChild);
}
@Nullable
public static ASTNode getPreviousLeaf(
@Nullable ASTNode node, @NotNull IElementType... typesToIgnore) {
ASTNode prev = getPrevious(node, typesToIgnore);
if (prev == null) {
return null;
}
ASTNode result = prev;
ASTNode lastChild = prev.getLastChildNode();
while (lastChild != null) {
result = lastChild;
lastChild = lastChild.getLastChildNode();
}
for (IElementType type : typesToIgnore) {
if (result.getElementType() == type) {
return getPreviousLeaf(result, typesToIgnore);
}
}
return result;
}
@Nullable
static XmlToken findEndTagName(@Nullable final PsiErrorElement element) {
if (element == null) return null;
final ASTNode astNode = element.getNode();
if (astNode == null) return null;
ASTNode current = astNode.getLastChildNode();
ASTNode prev = current;
while (current != null) {
final IElementType elementType = prev.getElementType();
if ((elementType == XmlElementType.XML_NAME || elementType == XmlElementType.XML_TAG_NAME)
&& current.getElementType() == XmlElementType.XML_END_TAG_START) {
return (XmlToken) prev.getPsi();
}
prev = current;
current = current.getTreePrev();
}
return null;
}