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in case of long line, expand shown context to the word boundary when searching for word like query

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Maxim.Mossienko
2013-05-02 18:42:41 +02:00
parent e1703251d9
commit 34d58eb2e4
1 changed files with 22 additions and 8 deletions
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platform/usageView/src/com/intellij/usages/ChunkExtractor.java
+22 -8
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@@ -150,26 +150,40 @@ public class ChunkExtractor {
final List<TextChunk> result = new ArrayList<TextChunk>();
appendPrefix(result, visibleLineNumber, visibleColumnNumber);
int lineStartOffset = myDocument.getLineStartOffset(lineNumber);
int lineEndOffset = lineStartOffset < myDocument.getTextLength() ? myDocument.getLineEndOffset(lineNumber) : 0;
if (lineStartOffset > lineEndOffset) return TextChunk.EMPTY_ARRAY;
int fragmentToShowStart = myDocument.getLineStartOffset(lineNumber);
int fragmentToShowEnd = fragmentToShowStart < myDocument.getTextLength() ? myDocument.getLineEndOffset(lineNumber) : 0;
if (fragmentToShowStart > fragmentToShowEnd) return TextChunk.EMPTY_ARRAY;
final CharSequence chars = myDocument.getCharsSequence();
if (lineEndOffset - lineStartOffset > MAX_LINE_LENGTH_TO_SHOW) {
if (fragmentToShowEnd - fragmentToShowStart > MAX_LINE_LENGTH_TO_SHOW) {
final int lineStartOffset = fragmentToShowStart;
fragmentToShowStart = Math.max(lineStartOffset, absoluteStartOffset - OFFSET_BEFORE_TO_SHOW_WHEN_LONG_LINE);
final int lineEndOffset = fragmentToShowEnd;
Segment segment = usageInfo2UsageAdapter.getUsageInfo().getSegment();
int usage_length = segment != null ? segment.getEndOffset() - segment.getStartOffset():0;
lineStartOffset = Math.max(lineStartOffset, absoluteStartOffset - OFFSET_BEFORE_TO_SHOW_WHEN_LONG_LINE);
lineEndOffset = Math.min(lineEndOffset, absoluteStartOffset + usage_length + OFFSET_AFTER_TO_SHOW_WHEN_LONG_LINE);
fragmentToShowEnd = Math.min(lineEndOffset, absoluteStartOffset + usage_length + OFFSET_AFTER_TO_SHOW_WHEN_LONG_LINE);
// if we search something like a word, then expand shown context from one symbol before / after at least for word boundary
// this should not cause restarts of the lexer as the tokens are usually words
if (usage_length > 0 &&
StringUtil.isJavaIdentifierStart(chars.charAt(absoluteStartOffset)) &&
StringUtil.isJavaIdentifierStart(chars.charAt(absoluteStartOffset + usage_length - 1))) {
while(fragmentToShowEnd < lineEndOffset && StringUtil.isJavaIdentifierStart(chars.charAt(fragmentToShowEnd - 1))) ++fragmentToShowEnd;
while(fragmentToShowStart > lineStartOffset && StringUtil.isJavaIdentifierStart(chars.charAt(fragmentToShowStart))) --fragmentToShowStart;
if (fragmentToShowStart != lineStartOffset) ++fragmentToShowStart;
if (fragmentToShowEnd != lineEndOffset) --fragmentToShowEnd;
}
}
if (myDocument instanceof DocumentWindow) {
List<TextRange> editable = InjectedLanguageManager.getInstance(file.getProject())
.intersectWithAllEditableFragments(file, new TextRange(lineStartOffset, lineEndOffset));
.intersectWithAllEditableFragments(file, new TextRange(fragmentToShowStart, fragmentToShowEnd));
for (TextRange range : editable) {
createTextChunks(usageInfo2UsageAdapter, chars, range.getStartOffset(), range.getEndOffset(), true, result);
}
return result.toArray(new TextChunk[result.size()]);
}
return createTextChunks(usageInfo2UsageAdapter, chars, lineStartOffset, lineEndOffset, true, result);
return createTextChunks(usageInfo2UsageAdapter, chars, fragmentToShowStart, fragmentToShowEnd, true, result);
}
@NotNull