package org.dylanfoundry.deft.parser;
import com.intellij.lang.*;
import com.intellij.lang.impl.PsiBuilderAdapter;
import com.intellij.lang.impl.PsiBuilderImpl;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.util.Comparing;
import com.intellij.openapi.util.Key;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.util.text.StringHash;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiReference;
import com.intellij.psi.TokenType;
import com.intellij.psi.impl.source.resolve.FileContextUtil;
import com.intellij.psi.impl.source.tree.CompositePsiElement;
import com.intellij.psi.tree.ICompositeElementType;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import com.intellij.util.Function;
import com.intellij.util.containers.LimitedPool;
import gnu.trove.THashSet;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedList;
/**
* @author gregsh
*/
@SuppressWarnings("StringEquality")
public class GeneratedParserUtilBase {
private static final Logger LOG = Logger.getInstance("org.intellij.grammar.parser.GeneratedParserUtilBase");
public static final IElementType DUMMY_BLOCK = new DummyBlockElementType();
public interface Parser {
boolean parse(PsiBuilder builder, int level);
}
public static final Parser TOKEN_ADVANCER = new Parser() {
@Override
public boolean parse(PsiBuilder builder, int level) {
if (builder.eof()) return false;
builder.advanceLexer();
return true;
}
};
public static final Parser TRUE_CONDITION = new Parser() {
@Override
public boolean parse(PsiBuilder builder, int level) {
return true;
}
};
public static boolean recursion_guard_(PsiBuilder builder_, int level_, String funcName_) {
if (level_ > 1000) {
builder_.error("Maximum recursion level (" + 1000 + ") reached in " + funcName_);
return false;
}
return true;
}
public static void empty_element_parsed_guard_(PsiBuilder builder_, int offset_, String funcName_) {
builder_.error("Empty element parsed in " + funcName_ +" at offset " + offset_);
}
public static boolean invalid_left_marker_guard_(PsiBuilder builder_, PsiBuilder.Marker marker_, String funcName_) {
//builder_.error("Invalid left marker encountered in " + funcName_ +" at offset " + builder_.getCurrentOffset());
boolean goodMarker = marker_ != null && ((LighterASTNode)marker_).getTokenType() != TokenType.ERROR_ELEMENT;
if (!goodMarker) return false;
ErrorState state = ErrorState.get(builder_);
Frame frame = state.levelCheck.isEmpty() ? null : state.levelCheck.getLast();
return frame == null || frame.errorReportedAt <= builder_.getCurrentOffset();
}
public static boolean consumeTokens(PsiBuilder builder_, int pin_, IElementType... tokens_) {
ErrorState state = ErrorState.get(builder_);
if (state.completionState != null && state.predicateSign) {
addCompletionVariant(state, state.completionState, builder_, tokens_, builder_.getCurrentOffset());
}
// suppress single token completion
CompletionState completionState = state.completionState;
state.completionState = null;
boolean result_ = true;
boolean pinned_ = false;
for (int i = 0, tokensLength = tokens_.length; i < tokensLength; i++) {
if (pin_ > 0 && i == pin_) pinned_ = result_;
if ((result_ || pinned_) && !consumeToken(builder_, tokens_[i])) {
result_ = false;
if (pin_ < 0 || pinned_) report_error_(builder_);
}
}
state.completionState = completionState;
return pinned_ || result_;
}
public static boolean consumeToken(PsiBuilder builder_, IElementType token) {
if (nextTokenIsInner(builder_, token, true)) {
builder_.advanceLexer();
return true;
}
return false;
}
public static boolean nextTokenIs(PsiBuilder builder_, IElementType token) {
return nextTokenIsInner(builder_, token, false);
}
public static boolean nextTokenIsInner(PsiBuilder builder_, IElementType token, boolean force) {
ErrorState state = ErrorState.get(builder_);
if (state.completionState != null && !force) return true;
IElementType tokenType = builder_.getTokenType();
if (!state.suppressErrors && state.predicateCount < 2) {
addVariant(state, builder_, token);
}
return token == tokenType;
}
public static boolean replaceVariants(PsiBuilder builder_, int variantCount, String frameName) {
ErrorState state = ErrorState.get(builder_);
if (!state.suppressErrors && state.predicateCount < 2 && state.predicateSign) {
state.clearVariants(true, state.variants.size() - variantCount);
addVariantInner(state, builder_.getCurrentOffset(), frameName);
}
return true;
}
public static void addVariant(PsiBuilder builder_, String text) {
addVariant(ErrorState.get(builder_), builder_, text);
}
private static void addVariant(ErrorState state, PsiBuilder builder_, Object o) {
int offset = builder_.getCurrentOffset();
addVariantInner(state, offset, o);
CompletionState completionState = state.completionState;
if (completionState != null && state.predicateSign) {
addCompletionVariant(state, completionState, builder_, o, offset);
}
}
private static void addVariantInner(ErrorState state, int offset, Object o) {
Variant variant = state.VARIANTS.alloc().init(offset, o);
if (state.predicateSign) {
state.variants.add(variant);
if (state.lastExpectedVariantOffset < variant.offset) {
state.lastExpectedVariantOffset = variant.offset;
}
}
else {
state.unexpected.add(variant);
}
}
public static boolean consumeToken(PsiBuilder builder_, String text) {
ErrorState state = ErrorState.get(builder_);
if (!state.suppressErrors && state.predicateCount < 2) {
addVariant(state, builder_, text);
}
return consumeTokenInner(builder_, text, state.caseSensitive);
}
public static boolean consumeTokenInner(PsiBuilder builder_, String text, boolean caseSensitive) {
final CharSequence sequence = builder_.getOriginalText();
final int offset = builder_.getCurrentOffset();
final int endOffset = offset + text.length();
CharSequence tokenText = sequence.subSequence(offset, Math.min(endOffset, sequence.length()));
if (Comparing.equal(text, tokenText, caseSensitive)) {
int count = 0;
while (true) {
final int nextOffset = builder_.rawTokenTypeStart(++ count);
if (nextOffset > endOffset) {
return false;
}
else if (nextOffset == endOffset) {
break;
}
}
while (count-- > 0) builder_.advanceLexer();
return true;
}
return false;
}
private static void addCompletionVariant(ErrorState state,
CompletionState completionState,
PsiBuilder builder_,
Object o,
int offset) {
boolean add = false;
int diff = completionState.offset - offset;
String text = completionState.convertItem(o);
int length = text == null? 0 : text.length();
if (length == 0) return;
if (diff == 0) {
add = true;
}
else if (diff > 0 && diff <= length) {
CharSequence fragment = builder_.getOriginalText().subSequence(offset, completionState.offset);
add = StringUtil.startsWithIgnoreCase(text, fragment.toString());
}
else if (diff < 0) {
for (int i=-1; ; i--) {
IElementType type = builder_.rawLookup(i);
int tokenStart = builder_.rawTokenTypeStart(i);
if (state.whitespaceTokens.contains(type) || state.commentTokens.contains(type)) {
diff = completionState.offset - tokenStart;
}
else if (type != null && tokenStart < completionState.offset) {
CharSequence fragment = builder_.getOriginalText().subSequence(tokenStart, completionState.offset);
if (StringUtil.startsWithIgnoreCase(text, fragment.toString())) {
diff = completionState.offset - tokenStart;
}
break;
}
else break;
}
add = diff >= 0 && diff < length;
}
add = add && length > 1 && !(text.charAt(0) == '<' && text.charAt(length - 1) == '>') &&
!(text.charAt(0) == '\'' && text.charAt(length - 1) == '\'' && length < 5);
if (add) {
completionState.items.add(text);
}
}
public static final String _SECTION_NOT_ = "_SECTION_NOT_";
public static final String _SECTION_AND_ = "_SECTION_AND_";
public static final String _SECTION_RECOVER_ = "_SECTION_RECOVER_";
public static final String _SECTION_GENERAL_ = "_SECTION_GENERAL_";
public static void enterErrorRecordingSection(PsiBuilder builder_, int level, @NotNull String sectionType, @Nullable String frameName) {
ErrorState state = ErrorState.get(builder_);
Frame frame = state.FRAMES.alloc().init(builder_.getCurrentOffset(), level, sectionType, frameName, state.variants.size());
state.levelCheck.add(frame);
if (sectionType == _SECTION_AND_) {
if (state.predicateCount == 0 && !state.predicateSign) {
throw new AssertionError("Incorrect false predicate sign");
}
state.predicateCount++;
}
else if (sectionType == _SECTION_NOT_) {
if (state.predicateCount == 0) {
state.predicateSign = false;
}
else {
state.predicateSign = !state.predicateSign;
}
state.predicateCount++;
}
}
public static boolean exitErrorRecordingSection(PsiBuilder builder_,
int level,
boolean result,
boolean pinned,
@NotNull String sectionType,
@Nullable Parser eatMore) {
ErrorState state = ErrorState.get(builder_);
Frame frame = state.levelCheck.pollLast();
int initialOffset = builder_.getCurrentOffset();
if (frame == null || level != frame.level || !sectionType.equals(frame.section)) {
LOG.error("Unbalanced error section: got " + new Frame().init(initialOffset, level, sectionType, "", 0) + ", expected " + frame);
if (frame != null) state.FRAMES.recycle(frame);
return result;
}
if (sectionType == _SECTION_AND_ || sectionType == _SECTION_NOT_) {
state.predicateCount--;
if (sectionType == _SECTION_NOT_) state.predicateSign = !state.predicateSign;
state.FRAMES.recycle(frame);
return result;
}
if (!result && !pinned && initialOffset == frame.offset && state.lastExpectedVariantOffset == frame.offset &&
frame.name != null && state.variants.size() - frame.variantCount > 1) {
state.clearVariants(true, frame.variantCount);
addVariantInner(state, initialOffset, frame.name);
}
if (sectionType == _SECTION_RECOVER_ && !state.suppressErrors && eatMore != null) {
state.suppressErrors = true;
final boolean eatMoreFlagOnce = !builder_.eof() && eatMore.parse(builder_, frame.level + 1);
final int lastErrorPos = getLastVariantOffset(state, initialOffset);
boolean eatMoreFlag = eatMoreFlagOnce || frame.offset == initialOffset && lastErrorPos > frame.offset;
final LighterASTNode latestDoneMarker =
(pinned || result) && (state.altMode || lastErrorPos > initialOffset) &&
eatMoreFlagOnce ? builder_.getLatestDoneMarker() : null;
PsiBuilder.Marker extensionMarker = null;
IElementType extensionTokenType = null;
if (latestDoneMarker instanceof PsiBuilder.Marker) {
extensionMarker = ((PsiBuilder.Marker)latestDoneMarker).precede();
extensionTokenType = latestDoneMarker.getTokenType();
((PsiBuilder.Marker)latestDoneMarker).drop();
}
// advance to the last error pos
// skip tokens until lastErrorPos. parseAsTree might look better here...
int parenCount = 0;
while (eatMoreFlag && builder_.getCurrentOffset() < lastErrorPos) {
if (state.braces != null) {
if (builder_.getTokenType() == state.braces[0].getLeftBraceType()) parenCount ++;
else if (builder_.getTokenType() == state.braces[0].getRightBraceType()) parenCount --;
}
builder_.advanceLexer();
eatMoreFlag = parenCount != 0 || eatMore.parse(builder_, frame.level + 1);
}
boolean errorReported = frame.errorReportedAt == initialOffset;
if (errorReported) {
if (eatMoreFlag) {
builder_.advanceLexer();
parseAsTree(state, builder_, frame.level + 1, DUMMY_BLOCK, true, TOKEN_ADVANCER, eatMore);
}
}
else if (eatMoreFlag) {
String tokenText = builder_.getTokenText();
String expectedText = state.getExpectedText(builder_);
PsiBuilder.Marker mark = builder_.mark();
builder_.advanceLexer();
final String gotText = !expectedText.isEmpty() ? "got '" + tokenText + "'" : "'" + tokenText + "' unexpected";
mark.error(expectedText + gotText);
parseAsTree(state, builder_, frame.level + 1, DUMMY_BLOCK, true, TOKEN_ADVANCER, eatMore);
errorReported = true;
}
else if (eatMoreFlagOnce || (!result && frame.offset != builder_.getCurrentOffset())) {
reportError(state, builder_, true);
errorReported = true;
}
if (extensionMarker != null) {
extensionMarker.done(extensionTokenType);
}
state.suppressErrors = false;
if (errorReported || result) {
state.clearVariants(true, 0);
state.clearVariants(false, 0);
state.lastExpectedVariantOffset = -1;
}
if (!result && eatMoreFlagOnce && frame.offset != builder_.getCurrentOffset()) result = true;
}
else if (!result && pinned && frame.errorReportedAt < 0) {
// do not report if there're errors after current offset
if (getLastVariantOffset(state, initialOffset) == initialOffset) {
// do not force, inner recoverRoot might have skipped some tokens
if (reportError(state, builder_, false)) {
frame.errorReportedAt = initialOffset;
}
}
}
// propagate errorReportedAt up the stack to avoid duplicate reporting
Frame prevFrame = state.levelCheck.isEmpty() ? null : state.levelCheck.getLast();
if (prevFrame != null && prevFrame.errorReportedAt < frame.errorReportedAt) prevFrame.errorReportedAt = frame.errorReportedAt;
state.FRAMES.recycle(frame);
return result;
}
public static boolean report_error_(PsiBuilder builder_, boolean current_) {
if (!current_) report_error_(builder_);
return current_;
}
public static void report_error_(PsiBuilder builder_) {
ErrorState state = ErrorState.get(builder_);
Frame frame = state.levelCheck.isEmpty()? null : state.levelCheck.getLast();
if (frame == null) {
LOG.error("Unbalanced error section: got null , expected " + frame);
return;
}
int offset = builder_.getCurrentOffset();
if (frame.errorReportedAt < offset && getLastVariantOffset(state, builder_.getCurrentOffset()) <= offset) {
if (reportError(state, builder_, true)) {
frame.errorReportedAt = offset;
}
}
}
private static int getLastVariantOffset(ErrorState state, int defValue) {
return state.lastExpectedVariantOffset < 0? defValue : state.lastExpectedVariantOffset;
}
private static boolean reportError(ErrorState state, PsiBuilder builder_, boolean force) {
String expectedText = state.getExpectedText(builder_);
boolean notEmpty = StringUtil.isNotEmpty(expectedText);
if (force || notEmpty) {
final String gotText = builder_.eof()? "unexpected end of file" :
notEmpty? "got '" + builder_.getTokenText() +"'" :
"'" + builder_.getTokenText() +"' unexpected";
builder_.error(expectedText + gotText);
return true;
}
return false;
}
public static final Key<CompletionState> COMPLETION_STATE_KEY = Key.create("COMPLETION_STATE_KEY");
public static class CompletionState implements Function<Object, String> {
public final int offset;
public final Collection<String> items = new THashSet<String>();
public CompletionState(int offset) {
this.offset = offset;
}
@Nullable
public String convertItem(Object o) {
return o instanceof Object[] ? StringUtil.join((Object[]) o, this, " ") : o.toString();
}
@Override
public String fun(Object o) {
return o.toString();
}
}
public static class Builder extends PsiBuilderAdapter {
final ErrorState state;
final PsiParser parser;
public Builder(PsiBuilder builder, ErrorState state, PsiParser parser) {
super(builder);
this.state = state;
this.parser = parser;
}
public Lexer getLexer() {
return ((PsiBuilderImpl)myDelegate).getLexer();
}
}
public static PsiBuilder adapt_builder_(IElementType root, PsiBuilder builder, PsiParser parser) {
ErrorState state = new ErrorState();
ErrorState.initState(root, builder, state);
return new Builder(builder, state, parser);
}
public static class ErrorState {
int predicateCount;
boolean predicateSign = true;
boolean suppressErrors;
final LinkedList<Frame> levelCheck = new LinkedList<Frame>();
CompletionState completionState;
private boolean caseSensitive;
private TokenSet whitespaceTokens = TokenSet.EMPTY;
private TokenSet commentTokens = TokenSet.EMPTY;
public BracePair[] braces;
public boolean altMode;
private int lastExpectedVariantOffset = -1;
ArrayList<Variant> variants = new ArrayList<Variant>();
ArrayList<Variant> unexpected = new ArrayList<Variant>();
final LimitedPool<Variant> VARIANTS = new LimitedPool<Variant>(5000, new LimitedPool.ObjectFactory<Variant>() {
public Variant create() {
return new Variant();
}
public void cleanup(final Variant o) {
}
});
final LimitedPool<Frame> FRAMES = new LimitedPool<Frame>(100, new LimitedPool.ObjectFactory<Frame>() {
public Frame create() {
return new Frame();
}
public void cleanup(final Frame o) {
}
});
public static ErrorState get(PsiBuilder builder) {
return ((Builder)builder).state;
}
private static void initState(IElementType root, PsiBuilder builder, ErrorState state) {
PsiFile file = builder.getUserDataUnprotected(FileContextUtil.CONTAINING_FILE_KEY);
state.completionState = file == null? null: file.getUserData(COMPLETION_STATE_KEY);
Language language = file == null? root.getLanguage() : file.getLanguage();
state.caseSensitive = language.isCaseSensitive();
ParserDefinition parserDefinition = LanguageParserDefinitions.INSTANCE.forLanguage(language);
if (parserDefinition != null) {
state.commentTokens = parserDefinition.getCommentTokens();
state.whitespaceTokens = parserDefinition.getWhitespaceTokens();
}
PairedBraceMatcher matcher = LanguageBraceMatching.INSTANCE.forLanguage(language);
state.braces = matcher == null ? null : matcher.getPairs();
if (state.braces != null && state.braces.length == 0) state.braces = null;
}
public String getExpectedText(PsiBuilder builder_) {
int offset = builder_.getCurrentOffset();
StringBuilder sb = new StringBuilder();
if (addExpected(sb, offset, true)) {
sb.append(" expected, ");
}
else if (addExpected(sb, offset, false)) sb.append(" unexpected, ");
return sb.toString();
}
private static final int MAX_VARIANTS_TO_DISPLAY = Integer.MAX_VALUE;
private boolean addExpected(StringBuilder sb, int offset, boolean expected) {
String[] strings = new String[variants.size()];
long[] hashes = new long[strings.length];
Arrays.fill(strings, "");
int count = 0;
loop: for (Variant variant : expected? variants : unexpected) {
if (offset == variant.offset) {
String text = variant.object.toString();
long hash = StringHash.calc(text);
for (int i=0; i<count; i++) {
if (hashes[i] == hash) continue loop;
}
hashes[count] = hash;
strings[count] = text;
count++;
}
}
Arrays.sort(strings);
count = 0;
for (String s : strings) {
if (s == "") continue;
if (count++ > 0) {
if (count > MAX_VARIANTS_TO_DISPLAY) {
sb.append(" and ...");
break;
}
else {
sb.append(", ");
}
}
char c = s.charAt(0);
String displayText = c == '<' || StringUtil.isJavaIdentifierStart(c) ? s : '\'' + s + '\'';
sb.append(displayText);
}
if (count > 1 && count < MAX_VARIANTS_TO_DISPLAY) {
int idx = sb.lastIndexOf(", ");
sb.replace(idx, idx + 1, " or");
}
return count > 0;
}
void clearVariants(boolean expected, int start) {
ArrayList<Variant> list = expected? variants : unexpected;
for (int i = start, len = list.size(); i < len; i ++) {
VARIANTS.recycle(list.get(i));
}
list.subList(start, list.size()).clear();
}
}
public static class Frame {
int offset;
int level;
String section;
String name;
int variantCount;
int errorReportedAt;
public Frame() {
}
public Frame init(int offset, int level, String section, String name, int variantCount) {
this.offset = offset;
this.level = level;
this.section = section;
this.name = name;
this.variantCount = variantCount;
this.errorReportedAt = -1;
return this;
}
@Override
public String toString() {
return "<"+offset+", "+section+", "+level+">";
}
}
public static class Variant {
int offset;
Object object;
public Variant init(int offset, Object text) {
this.offset = offset;
this.object = text;
return this;
}
@Override
public String toString() {
return "<" + offset + ", " + object + ">";
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Variant variant = (Variant)o;
if (offset != variant.offset) return false;
if (!this.object.equals(variant.object)) return false;
return true;
}
@Override
public int hashCode() {
int result = offset;
result = 31 * result + object.hashCode();
return result;
}
}
@Nullable
private static IElementType getClosingBracket(ErrorState state, IElementType type) {
if (state.braces == null) return null;
for (BracePair pair : state.braces) {
if (type == pair.getLeftBraceType()) return pair.getRightBraceType();
}
return null;
}
private static final int MAX_CHILDREN_IN_TREE = 10;
public static boolean parseAsTree(ErrorState state, final PsiBuilder builder_, int level, final IElementType chunkType,
boolean checkBraces, final Parser parser, final Parser eatMoreCondition) {
final LinkedList<Pair<PsiBuilder.Marker, PsiBuilder.Marker>> parenList = new LinkedList<Pair<PsiBuilder.Marker, PsiBuilder.Marker>>();
final LinkedList<Pair<PsiBuilder.Marker, Integer>> siblingList = new LinkedList<Pair<PsiBuilder.Marker, Integer>>();
PsiBuilder.Marker marker = null;
final Runnable checkSiblingsRunnable = new Runnable() {
public void run() {
main:
while (!siblingList.isEmpty()) {
final Pair<PsiBuilder.Marker, PsiBuilder.Marker> parenPair = parenList.peek();
final int rating = siblingList.getFirst().second;
int count = 0;
for (Pair<PsiBuilder.Marker, Integer> pair : siblingList) {
if (pair.second != rating || parenPair != null && pair.first == parenPair.second) break main;
if (++count >= MAX_CHILDREN_IN_TREE) {
final PsiBuilder.Marker parentMarker = pair.first.precede();
while (count-- > 0) {
siblingList.removeFirst();
}
parentMarker.done(chunkType);
siblingList.addFirst(Pair.create(parentMarker, rating + 1));
continue main;
}
}
break;
}
}
};
boolean checkParens = state.braces != null && checkBraces;
int totalCount = 0;
int tokenCount = 0;
if (checkParens && builder_.rawLookup(-1) == state.braces[0].getLeftBraceType()) {
LighterASTNode doneMarker = builder_.getLatestDoneMarker();
if (doneMarker != null && doneMarker.getStartOffset() == builder_.rawTokenTypeStart(-1) && doneMarker.getTokenType() == TokenType.ERROR_ELEMENT) {
parenList.add(Pair.create(((PsiBuilder.Marker)doneMarker).precede(), (PsiBuilder.Marker)null));
}
}
while (true) {
final IElementType tokenType = builder_.getTokenType();
if (checkParens && (tokenType == state.braces[0].getLeftBraceType() || tokenType == state.braces[0].getRightBraceType() && !parenList.isEmpty())) {
if (marker != null) {
marker.done(chunkType);
siblingList.addFirst(Pair.create(marker, 1));
marker = null;
tokenCount = 0;
}
if (tokenType == state.braces[0].getLeftBraceType()) {
final Pair<PsiBuilder.Marker, Integer> prev = siblingList.peek();
parenList.addFirst(Pair.create(builder_.mark(), prev == null ? null : prev.first));
}
checkSiblingsRunnable.run();
builder_.advanceLexer();
if (tokenType == state.braces[0].getRightBraceType()) {
final Pair<PsiBuilder.Marker, PsiBuilder.Marker> pair = parenList.removeFirst();
pair.first.done(chunkType);
// drop all markers inside parens
while (!siblingList.isEmpty() && siblingList.getFirst().first != pair.second) {
siblingList.removeFirst();
}
siblingList.addFirst(Pair.create(pair.first, 1));
checkSiblingsRunnable.run();
}
}
else {
if (marker == null) {
marker = builder_.mark();
}
final boolean result = (state.altMode && !parenList.isEmpty() || eatMoreCondition.parse(builder_, level + 1)) && parser.parse(builder_, level + 1);
if (result) {
tokenCount++;
totalCount++;
}
if (!result) {
break;
}
}
if (tokenCount >= MAX_CHILDREN_IN_TREE && marker != null) {
marker.done(chunkType);
siblingList.addFirst(Pair.create(marker, 1));
checkSiblingsRunnable.run();
marker = null;
tokenCount = 0;
}
}
if (marker != null) {
marker.drop();
}
for (Pair<PsiBuilder.Marker, PsiBuilder.Marker> pair : parenList) {
pair.first.drop();
}
return totalCount != 0;
}
private static class DummyBlockElementType extends IElementType implements ICompositeElementType{
DummyBlockElementType() {
super("DUMMY_BLOCK", Language.ANY);
}
@NotNull
@Override
public ASTNode createCompositeNode() {
return new DummyBlock();
}
}
public static class DummyBlock extends CompositePsiElement {
DummyBlock() {
super(DUMMY_BLOCK);
}
@Override
public PsiReference[] getReferences() {
return PsiReference.EMPTY_ARRAY;
}
@Override
public boolean canNavigateToSource() {
return false;
}
@Override
public boolean canNavigate() {
return false;
}
@NotNull
@Override
public Language getLanguage() {
return getParent().getLanguage();
}
}
}