@Nullable("null means we were unable to calculate") LogicalPosition hostToInjectedInVirtualSpace(@NotNull LogicalPosition hPos) { // beware the virtual space int hLineStartOffset = hPos.line >= myDelegate.getLineCount() ? myDelegate.getTextLength() : myDelegate.getLineStartOffset(hPos.line); int iLineStartOffset = hostToInjected(hLineStartOffset); int iLine = getLineNumber(iLineStartOffset); synchronized (myLock) { for (int i = myShreds.size() - 1; i >= 0; i--) { PsiLanguageInjectionHost.Shred shred = myShreds.get(i); if (!shred.isValid()) continue; Segment hostRangeMarker = shred.getHostRangeMarker(); if (hostRangeMarker == null) continue; int hShredEndOffset = hostRangeMarker.getEndOffset(); int hShredStartOffset = hostRangeMarker.getStartOffset(); int hShredStartLine = myDelegate.getLineNumber(hShredStartOffset); int hShredEndLine = myDelegate.getLineNumber(hShredEndOffset); if (hShredStartLine <= hPos.line && hPos.line <= hShredEndLine) { int hColumnOfShredEnd = hShredEndOffset - hLineStartOffset; int iColumnOfShredEnd = hostToInjected(hShredEndOffset) - iLineStartOffset; int iColumn = iColumnOfShredEnd + hPos.column - hColumnOfShredEnd; return new LogicalPosition(iLine, iColumn); } } } return null; }
@Override public int injectedToHostLine(int line) { if (line < myPrefixLineCount) { synchronized (myLock) { Segment hostRangeMarker = myShreds.get(0).getHostRangeMarker(); return hostRangeMarker == null ? 0 : myDelegate.getLineNumber(hostRangeMarker.getStartOffset()); } } int lineCount = getLineCount(); if (line > lineCount - mySuffixLineCount) { return lineCount; } int offset = getLineStartOffset(line); int hostOffset = injectedToHost(offset); return myDelegate.getLineNumber(hostOffset); }
/** * @return position <code>x</code> for which <code> * myDocument.getText().substring(x, startOffset)</code> contains <code>blankLinesNumber * </code> line feeds and <code>myDocument.getText.charAt(x-1) == '\n'</code> */ private int getBlankLineOffset(int blankLinesNumber, int startOffset) { int startLine = myDocument.getLineNumber(startOffset); if (startLine <= 0) { return 0; } CharSequence text = myDocument.getCharsSequence(); for (int i = myDocument.getLineStartOffset(startLine - 1) - 1; i >= 0; i = CharArrayUtil.lastIndexOf(text, "\n", i - 1)) { if (--blankLinesNumber <= 0) { return i + 1; } } return 0; }