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93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
#include "exprevaluator.h"
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#ifdef _MSC_VER
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ExprEvaluator::ExprEvaluator()
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{
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m_operations["=="] = [](QVariant left, QVariant right) { return left == right; };
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m_operations["!="] = [](QVariant left, QVariant right) { return left != right; };
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m_operations["<"] = [](QVariant left, QVariant right) { return left < right; };
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m_operations["<="] = [](QVariant left, QVariant right) { return left <= right; };
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m_operations[">"] = [](QVariant left, QVariant right) { return left > right; };
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m_operations[">="] = [](QVariant left, QVariant right) { return left >= right; };
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m_operations["%"] = [](QVariant left, QVariant right) { return left.toString().contains(right.toString()); };
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m_operations["||"] = [](QVariant left, QVariant right) { return left.toBool() || right.toBool(); };
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m_operations["&&"] = [](QVariant left, QVariant right) { return left.toBool() && right.toBool(); };
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m_caseSensitive = false;
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}
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#else
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const QMap<QString, std::function<bool(QVariant, QVariant)> > ExprEvaluator::m_operations = {
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{ "==", [](QVariant left, QVariant right) { return left == right; }},
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{ "!=", [](QVariant left, QVariant right) { return left != right; }},
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{ "<", [](QVariant left, QVariant right) { return left < right; }},
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{ "<=", [](QVariant left, QVariant right) { return left <= right; }},
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{ ">", [](QVariant left, QVariant right) { return left > right; }},
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{ ">=", [](QVariant left, QVariant right) { return left >= right; }},
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{ "%", [](QVariant left, QVariant right) { return left.toString().contains(right.toString()); }},
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{ "||", [](QVariant left, QVariant right) { return left.toBool() || right.toBool(); }},
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{ "&&", [](QVariant left, QVariant right) { return left.toBool() && right.toBool(); }}
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};
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ExprEvaluator::ExprEvaluator()
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{
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m_caseSensitive = false;
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}
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#endif
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bool ExprEvaluator::evaluate(QObject *object, const QString &exp)
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{
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if (exp.contains("&&") && exp.contains("||"))
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{
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if (exp.indexOf("&&") < exp.indexOf("||"))
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{
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return subEval("&&", exp, object);
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}
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else
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{
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return subEval("||", exp, object);
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}
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}
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else if (exp.contains("&&"))
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{
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return subEval("&&", exp, object);
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}
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else if (exp.contains("||"))
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{
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return subEval("||", exp, object);
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}
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else
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{
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QVariant value;
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QString oper;
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QVariant cond;
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parseExpr(exp, value, oper, cond, object);
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return m_operations[oper](value, cond);
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}
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}
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void ExprEvaluator::setCaseSensitive(bool caseSensitive)
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{
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m_caseSensitive = caseSensitive;
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}
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bool ExprEvaluator::subEval(const QString &oper, const QString &expresion, QObject *object)
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{
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QString ex = expresion.left(expresion.indexOf(oper));
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QVariant value;
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QString o;
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QVariant cond;
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parseExpr(ex, value, o, cond, object);
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return m_operations[oper](m_operations[o](value, cond), evaluate(object, expresion.mid(expresion.indexOf(oper) + 2).trimmed()));
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}
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void ExprEvaluator::parseExpr(const QString &exp, QVariant &value, QString &oper, QVariant &condition, QObject *object)
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{
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QStringList expCat = exp.trimmed().split(" ");
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value = object->property(expCat[0].toStdString().c_str());
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oper = expCat[1];
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condition = expCat[2].replace("%20", " ");
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}
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