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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qqmldomindentinglinewriter_p.h"
#include "qqmldomlinewriter_p.h"
#include <QtCore/QCoreApplication>
#include <QtCore/QRegularExpression>
QT_BEGIN_NAMESPACE
namespace QQmlJS {
namespace Dom {
// If one of these tokens is the split token on a line, the line should be split after it.
static constexpr bool shouldSplitAfterToken(int kind)
{
switch (kind) {
case Lexer::T_COMMA:
case Lexer::T_COLON:
case Lexer::T_SEMICOLON:
case Lexer::T_LBRACE:
case Lexer::T_LPAREN:
case Lexer::T_LBRACKET:
return true;
default:
break;
}
return false;
}
FormatPartialStatus &IndentingLineWriter::fStatus()
{
if (!m_fStatusValid) {
m_fStatus = formatCodeLine(m_currentLine, m_options.formatOptions, m_preCachedStatus);
m_fStatusValid = true;
}
return m_fStatus;
}
void IndentingLineWriter::willCommit()
{
m_preCachedStatus = fStatus().currentStatus;
}
void IndentingLineWriter::reindentAndSplit(const QString &eol, bool eof)
{
// maybe re-indent
if (m_reindent && m_columnNr == 0)
setLineIndent(fStatus().indentLine());
if (!eol.isEmpty() || eof)
handleTrailingSpace();
// maybe split long line
if (m_options.maxLineLength > 0 && m_currentLine.size() > m_options.maxLineLength)
splitOnMaxLength(eol, eof);
// maybe write out
if (!eol.isEmpty() || eof)
commitLine(eol);
}
void IndentingLineWriter::handleTrailingSpace()
{
LineWriterOptions::TrailingSpace trailingSpace;
if (!m_currentLine.isEmpty() && m_currentLine.trimmed().isEmpty()) {
// space only line
const Scanner::State &oldState = m_preCachedStatus.lexerState;
if (oldState.isMultilineComment())
trailingSpace = m_options.commentTrailingSpace;
else if (oldState.isMultiline())
trailingSpace = m_options.stringTrailingSpace;
else
trailingSpace = m_options.codeTrailingSpace;
// in the LSP we will probably want to treat is specially if it is the line with the
// cursor, of if indentation of it is requested
} else {
const Scanner::State ¤tState = fStatus().currentStatus.lexerState;
if (currentState.isMultilineComment()) {
trailingSpace = m_options.commentTrailingSpace;
} else if (currentState.isMultiline()) {
trailingSpace = m_options.stringTrailingSpace;
} else {
const int kind =
(fStatus().lineTokens.isEmpty() ? Lexer::T_EOL
: fStatus().lineTokens.last().lexKind);
if (Token::lexKindIsComment(kind)) {
// a // comment...
trailingSpace = m_options.commentTrailingSpace;
Q_ASSERT(fStatus().currentStatus.state().type
!= FormatTextStatus::StateType::MultilineCommentCont
&& fStatus().currentStatus.state().type
!= FormatTextStatus::StateType::
MultilineCommentStart); // these should have been
// handled above
} else {
trailingSpace = m_options.codeTrailingSpace;
}
}
}
LineWriter::handleTrailingSpace(trailingSpace);
}
int IndentingLineWriter::findSplitLocation(const QList<Token> &tokens, int minSplitLength)
{
// Reverse search to find the "last"
auto lastDelimiterTokenBeforeLineSplitIt =
std::find_if(tokens.crbegin(), tokens.crend(), [&](auto &&t) {
return Token::lexKindIsDelimiter(t.lexKind)
&& column(t.end()) >= minSplitLength;
});
if (lastDelimiterTokenBeforeLineSplitIt == tokens.crend())
return -1;
if (shouldSplitAfterToken(lastDelimiterTokenBeforeLineSplitIt->lexKind)) {
return lastDelimiterTokenBeforeLineSplitIt->end();
} else {
// split before the token (after the previous token)
auto previousTokenIt = std::next(lastDelimiterTokenBeforeLineSplitIt);
return previousTokenIt != tokens.crend() ? previousTokenIt->end()
: lastDelimiterTokenBeforeLineSplitIt->begin();
}
}
void IndentingLineWriter::splitOnMaxLength(const QString &eol, bool eof)
{
if (fStatus().lineTokens.size() <= 1)
return;
// {}[] should already be handled (handle also here?)
int minLen = 0;
while (minLen < m_currentLine.size() && m_currentLine.at(minLen).isSpace())
++minLen;
minLen = column(minLen) + m_options.minContentLength;
int possibleSplit = findSplitLocation(fStatus().lineTokens, minLen);
if (possibleSplit > 0) {
lineChanged();
commitLine(eolToWrite(), TextAddType::NewlineSplit, possibleSplit);
setReindent(true);
reindentAndSplit(eol, eof);
}
}
} // namespace Dom
} // namespace QQmlJS
QT_END_NAMESPACE
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