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Improved QML/JS indenter when using C-like multiline comments.

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This commit is contained in:
Roberto Raggi
2010-01-14 15:35:00 +01:00
parent 35e3526825
commit ea9f96a395
2 changed files with 33 additions and 38 deletions
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67
src/shared/qscripthighlighter/qscriptindenter.cpp
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@@ -208,12 +208,10 @@ QString QScriptIndenter::trimmedCodeLine(const QString &t)
{
QScriptIncrementalScanner scanner;
int state = yyLinizerState.iter.userState();
if (state == -1)
state = 0;
state = state & 0xff;
QTextBlock currentLine = yyLinizerState.iter;
int startState = qMax(0, currentLine.previous().userState()) & 0xff;
yyLinizerState.tokens = scanner(t, state);
yyLinizerState.tokens = scanner(t, startState);
QString trimmed;
int previousTokenEnd = 0;
foreach (const QScriptIncrementalScanner::Token &token, yyLinizerState.tokens) {
@@ -224,8 +222,25 @@ QString QScriptIndenter::trimmedCodeLine(const QString &t)
trimmed.append(QLatin1Char('X'));
} else if (token.is(QScriptIncrementalScanner::Token::Comment)) {
for (int i = 0; i < token.length; ++i)
trimmed.append(QLatin1Char(' '));
int i = 0;
int e = token.length;
if (token.offset > 0 || startState == 0) {
trimmed.append(QLatin1String("/*"));
i += 2;
}
bool needEndOfComment = false;
if (e > 2 && token.end() == t.length() && scanner.endState() != 0) {
needEndOfComment = true;
e -= 2;
}
for (; i < e; ++i)
trimmed.append(QLatin1Char(' '));
if (needEndOfComment)
trimmed.append(QLatin1String("*/"));
} else {
trimmed.append(t.midRef(token.offset, token.length));
@@ -450,35 +465,15 @@ void QScriptIndenter::startLinizer()
potentially the whole line) is part of a C-style comment;
otherwise returns false.
*/
bool QScriptIndenter::bottomLineStartsInCComment()
bool QScriptIndenter::bottomLineStartsInMultilineComment()
{
const QLatin1String slashAster("/*");
const QLatin1String asterSlash("*/");
QTextBlock currentLine = yyProgram.lastBlock().previous();
QTextBlock previousLine = currentLine.previous();
/*
We could use the linizer here, but that would slow us down
terribly. We are better to trim only the code lines we need.
*/
QTextBlock p = yyProgram.lastBlock();
p = p.previous(); // skip bottom line
int startState = qMax(0, previousLine.userState()) & 0xff;
if (startState > 0)
return true;
for (int i = 0; i < BigRoof; i++) {
if (p == yyProgram.firstBlock())
return false;
p = p.previous();
const QString blockText = p.text();
if (blockText.indexOf(slashAster) != -1 || blockText.indexOf(asterSlash) != -1) {
const QString trimmed = trimmedCodeLine(blockText);
if (trimmed.indexOf(slashAster) != -1) {
return true;
} else if (trimmed.indexOf(asterSlash) != -1) {
return false;
}
}
}
return false;
}
@@ -490,7 +485,7 @@ bool QScriptIndenter::bottomLineStartsInCComment()
Essentially, we're trying to align against some text on the
previous line.
*/
int QScriptIndenter::indentWhenBottomLineStartsInCComment()
int QScriptIndenter::indentWhenBottomLineStartsInMultiLineComment()
{
int k = yyLine->lastIndexOf(QLatin1String("/*"));
if (k == -1) {
@@ -1028,14 +1023,14 @@ int QScriptIndenter::indentForBottomLine(QTextBlock begin, QTextBlock end, QChar
QChar firstCh = firstNonWhiteSpace(bottomLine);
int indent = 0;
if (bottomLineStartsInCComment()) {
if (bottomLineStartsInMultilineComment()) {
/*
The bottom line starts in a C-style comment. Indent it
smartly, unless the user has already played around with it,
in which case it's better to leave her stuff alone.
*/
if (isOnlyWhiteSpace(bottomLine)) {
indent = indentWhenBottomLineStartsInCComment();
indent = indentWhenBottomLineStartsInMultiLineComment();
} else {
indent = indentOfLine(bottomLine);
}