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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "clangfunctionhintmodel.h"
#include "clangcompletionchunkstotextconverter.h"
#include <cplusplus/SimpleLexer.h>
namespace ClangCodeModel {
namespace Internal {
using namespace CPlusPlus;
ClangFunctionHintModel::ClangFunctionHintModel(const ClangBackEnd::CodeCompletions &functionSymbols)
: m_functionSymbols(functionSymbols)
, m_currentArgument(-1)
{
}
void ClangFunctionHintModel::reset()
{
}
int ClangFunctionHintModel::size() const
{
return m_functionSymbols.size();
}
QString ClangFunctionHintModel::text(int index) const
{
const ClangBackEnd::CodeCompletionChunks chunks = m_functionSymbols.at(index).chunks();
const QString signatureWithEmphasizedCurrentParameter
= CompletionChunksToTextConverter::convertToFunctionSignatureWithHtml(chunks,
m_currentArgument + 1);
return signatureWithEmphasizedCurrentParameter;
}
int ClangFunctionHintModel::activeArgument(const QString &prefix) const
{
int activeArgumentNumber = 0;
int unbalancedParens = 0; // expressions
int unbalancedBraces = 0; // initializer lists
int unbalancedBrackets = 0; // lambda-capture
int unbalancedLessGreater = 0; // template arguments
SimpleLexer tokenize;
const Tokens tokens = tokenize(prefix);
for (const Token &token : tokens) {
if (token.is(T_LPAREN)) {
++unbalancedParens;
} else if (token.is(T_RPAREN)) {
--unbalancedParens;
} else if (token.is(T_LBRACE)) {
++unbalancedBraces;
} else if (token.is(T_RBRACE)) {
--unbalancedBraces;
} else if (token.is(T_LBRACKET)) {
++unbalancedBrackets;
} else if (token.is(T_RBRACKET)) {
--unbalancedBrackets;
} else if (token.is(T_LESS)) {
++unbalancedLessGreater;
} else if (token.is(T_GREATER)) {
--unbalancedLessGreater;
} else if (!unbalancedParens
&& !unbalancedBraces
&& !unbalancedBrackets
&& !unbalancedLessGreater
&& token.is(T_COMMA)) {
++activeArgumentNumber;
}
}
if (unbalancedParens < 0
|| unbalancedBraces < 0
|| unbalancedBrackets < 0
|| unbalancedLessGreater < 0) {
return -1;
}
if (activeArgumentNumber != m_currentArgument)
m_currentArgument = activeArgumentNumber;
return activeArgumentNumber;
}
} // namespace Internal
} // namespace ClangCodeModel
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