forked from qt-creator/qt-creator
b4e2ab36a7
...when typing more arguments:
struct Foo {};
void f(int, int);
void f(Foo, Foo);
void f(char, char);
void c()
{
f( // 1. Trigger completion with Ctrl+Space
// 2. Chose item "f(Foo, Foo)"
// 3. Type: Foo(),
// OK, signature hint "f(Foo, Foo)" is displayed again
}
FunctionHintProposalWidget and IFunctionHintProposalModel are
instantiated for each calculation, so remember the selected hint in the
CodeAssist. Keep the latest 20 entries.
Task-number: QTCREATORBUG-11688
Change-Id: I579fc6d8a35dd8fa398e4b3170ddc05a85252d1a
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
126 lines
3.9 KiB
C++
126 lines
3.9 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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****************************************************************************/
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#include "clangfunctionhintmodel.h"
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#include "clangcompletionchunkstotextconverter.h"
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#include <cplusplus/SimpleLexer.h>
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namespace ClangCodeModel {
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namespace Internal {
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using namespace CPlusPlus;
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ClangFunctionHintModel::ClangFunctionHintModel(const ClangBackEnd::CodeCompletions &functionSymbols)
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: m_functionSymbols(functionSymbols)
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, m_currentArgument(-1)
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{
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}
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void ClangFunctionHintModel::reset()
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{
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}
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int ClangFunctionHintModel::size() const
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{
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return m_functionSymbols.size();
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}
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QString ClangFunctionHintModel::text(int index) const
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{
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const ClangBackEnd::CodeCompletionChunks chunks = m_functionSymbols.at(index).chunks();
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const QString signatureWithEmphasizedCurrentParameter
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= CompletionChunksToTextConverter::convertToFunctionSignatureWithHtml(
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chunks,
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m_functionSymbols.at(index).completionKind(),
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m_currentArgument + 1);
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return signatureWithEmphasizedCurrentParameter;
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}
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QString ClangFunctionHintModel::id(int index) const
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{
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QString chunks;
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for (const ClangBackEnd::CodeCompletionChunk &chunk : m_functionSymbols.at(index).chunks())
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chunks += chunk.text();
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return chunks;
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}
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int ClangFunctionHintModel::activeArgument(const QString &prefix) const
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{
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int activeArgumentNumber = 0;
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int unbalancedParens = 0; // expressions
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int unbalancedBraces = 0; // initializer lists
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int unbalancedBrackets = 0; // lambda-capture
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int unbalancedLessGreater = 0; // template arguments
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SimpleLexer tokenize;
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const Tokens tokens = tokenize(prefix);
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for (const Token &token : tokens) {
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if (token.is(T_LPAREN)) {
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++unbalancedParens;
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} else if (token.is(T_RPAREN)) {
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--unbalancedParens;
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} else if (token.is(T_LBRACE)) {
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++unbalancedBraces;
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} else if (token.is(T_RBRACE)) {
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--unbalancedBraces;
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} else if (token.is(T_LBRACKET)) {
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++unbalancedBrackets;
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} else if (token.is(T_RBRACKET)) {
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--unbalancedBrackets;
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} else if (token.is(T_LESS)) {
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++unbalancedLessGreater;
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} else if (token.is(T_GREATER)) {
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--unbalancedLessGreater;
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} else if (!unbalancedParens
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&& !unbalancedBraces
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&& !unbalancedBrackets
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&& !unbalancedLessGreater
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&& token.is(T_COMMA)) {
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++activeArgumentNumber;
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}
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}
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if (unbalancedParens < 0
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|| unbalancedBraces < 0
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|| unbalancedBrackets < 0
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|| unbalancedLessGreater < 0) {
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return -1;
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}
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if (activeArgumentNumber != m_currentArgument)
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m_currentArgument = activeArgumentNumber;
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return activeArgumentNumber;
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}
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} // namespace Internal
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} // namespace ClangCodeModel
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