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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "ASTPath.h"
#include <cplusplus/AST.h>
#include <cplusplus/TranslationUnit.h>
#ifdef WITH_AST_PATH_DUMP
# include <QDebug>
# include <typeinfo>
#endif // WITH_AST_PATH_DUMP
using namespace CPlusPlus;
QList<AST *> ASTPath::operator()(int line, int column)
{
_nodes.clear();
_line = line;
_column = column;
if (_doc) {
if (TranslationUnit *unit = _doc->translationUnit())
accept(unit->ast());
}
return _nodes;
}
#ifdef WITH_AST_PATH_DUMP
void ASTPath::dump(const QList<AST *> nodes)
{
qDebug() << "ASTPath dump," << nodes.size() << "nodes:";
for (int i = 0; i < nodes.size(); ++i)
qDebug() << qPrintable(QString(i + 1, QLatin1Char('-'))) << typeid(*nodes.at(i)).name();
}
#endif // WITH_AST_PATH_DUMP
bool ASTPath::preVisit(AST *ast)
{
const unsigned firstToken = firstNonGeneratedToken(ast);
const unsigned lastToken = lastNonGeneratedToken(ast);
if (firstToken > 0) {
if (lastToken <= firstToken)
return false;
int startLine, startColumn;
getTokenStartPosition(firstToken, &startLine, &startColumn);
if (_line > startLine || (_line == startLine && _column >= startColumn)) {
int endLine, endColumn;
getTokenEndPosition(lastToken - 1, &endLine, &endColumn);
if (_line < endLine || (_line == endLine && _column <= endColumn)) {
_nodes.append(ast);
return true;
}
}
}
return false;
}
unsigned ASTPath::firstNonGeneratedToken(AST *ast) const
{
const unsigned lastTokenIndex = ast->lastToken();
unsigned tokenIndex = ast->firstToken();
while (tokenIndex <= lastTokenIndex && tokenAt(tokenIndex).generated())
++tokenIndex;
return tokenIndex;
}
unsigned ASTPath::lastNonGeneratedToken(AST *ast) const
{
const unsigned firstTokenIndex = ast->firstToken();
const unsigned lastTokenIndex = ast->lastToken();
unsigned tokenIndex = lastTokenIndex;
while (firstTokenIndex <= tokenIndex && tokenAt(tokenIndex).generated())
--tokenIndex;
return tokenIndex != lastTokenIndex
? tokenIndex + 1
: tokenIndex;
}
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