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/*
SPDX-FileCopyrightText: 2007 Andreas Pakulat <apaku@gmx.de>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "variablereferenceparser.h"
bool isVarNameChar(QChar* c)
{
bool ret = c->isLetterOrNumber() || c->unicode() == '_';
return ret;
}
VariableInfo::VariableInfo()
{
}
VariableReferenceParser::VariableReferenceParser()
{
}
void VariableReferenceParser::setContent(const QString& content)
{
m_content = content;
}
bool VariableReferenceParser::parse()
{
int size = m_content.size();
int curpos = 0;
if (size == 0 || size < 3) {
return true;
}
QChar* it = m_content.data();
do {
if (it->unicode() == '$' && size > curpos + 2) {
it++;
curpos++;
if (it->unicode() == '$') {
int begin = curpos - 1;
it++;
curpos++;
QString variable;
VariableInfo::VariableType type = VariableInfo::QMakeVariable;
if (it->unicode() == '(') {
do {
it++;
curpos++;
} while (curpos < size && it->unicode() != ')');
type = VariableInfo::ShellVariableResolveQMake;
variable = m_content.mid(begin + 3, curpos - begin - 3);
++curpos;
} else if (it->unicode() == '{') {
do {
it++;
curpos++;
if (it->unicode() == '(') {
type = VariableInfo::FunctionCall;
}
} while (curpos < size && it->unicode() != '}');
variable = m_content.mid(begin + 3, curpos - begin - 3);
++curpos;
} else if (it->unicode() == '[') {
do {
it++;
curpos++;
} while (curpos < size && it->unicode() != ']');
type = VariableInfo::QtConfigVariable;
variable = m_content.mid(begin + 3, curpos - begin - 3);
++curpos;
} else {
do {
it++;
curpos++;
} while (curpos < size && isVarNameChar(it));
variable = m_content.mid(begin + 2, curpos - begin - 2);
if (it->unicode() == '(') {
type = VariableInfo::FunctionCall;
int braceCount = 0;
do {
it++;
curpos++;
if (it->unicode() == ')') {
braceCount--;
} else if (it->unicode() == '(') {
braceCount++;
}
} while (curpos < size && (it->unicode() != ')' || braceCount == 0));
// count the current position one further if we have it
// at the closing brace, this is needed for proper end-calculation
if (curpos < size && it->unicode() == ')') {
it++;
curpos++;
}
}
}
int end = curpos - 1;
appendPosition(variable, begin, end, type);
} else if (it->unicode() == '(') {
int begin = curpos - 1;
do {
it++;
curpos++;
} while (curpos < size && it->unicode() != ')');
int end = curpos - 1;
appendPosition(m_content.mid(begin + 2, end - (begin + 2)), begin, end,
VariableInfo::ShellVariableResolveMake);
}
} else {
curpos++;
}
} while (curpos < size);
return true;
}
QStringList VariableReferenceParser::variableReferences() const
{
return m_variables.keys();
}
VariableInfo VariableReferenceParser::variableInfo(const QString& var) const
{
return m_variables.value(var, VariableInfo());
}
void VariableReferenceParser::appendPosition(const QString& var, int start, int end, VariableInfo::VariableType type)
{
auto variableIt = m_variables.find(var);
if (variableIt == m_variables.end()) {
VariableInfo vi;
vi.type = type;
variableIt = m_variables.insert(var, vi);
}
variableIt->positions << VariableInfo::Position(start, end);
}
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