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| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** |
| ** This file is part of the QtXmlPatterns module of the Qt Toolkit. |
| ** |
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| ** Alternatively, this file may be used under the terms of the GNU |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| |
| #include "qcommonsequencetypes_p.h" |
| #include "qatomicstring_p.h" |
| |
| #include "qsimplecontentconstructor_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| using namespace QPatternist; |
| |
| SimpleContentConstructor::SimpleContentConstructor(const Expression::Ptr &operand) : SingleContainer(operand) |
| { |
| } |
| |
| Item SimpleContentConstructor::evaluateSingleton(const DynamicContext::Ptr &context) const |
| { |
| const Item::Iterator::Ptr it(m_operand->evaluateSequence(context)); |
| Item next(it->next()); |
| QString result; |
| |
| if(next) |
| { |
| result = next.stringValue(); |
| next = it->next(); |
| } |
| else |
| return Item(); |
| |
| while(next) |
| { |
| result += QLatin1Char(' '); |
| result += next.stringValue(); |
| next = it->next(); |
| } |
| |
| return AtomicString::fromValue(result); |
| } |
| |
| Expression::Ptr SimpleContentConstructor::compress(const StaticContext::Ptr &context) |
| { |
| const Expression::Ptr me(SingleContainer::compress(context)); |
| |
| if(me.data() == this) |
| { |
| /* Optimization: if we will evaluate to a single string, we're not |
| * necessary. */ |
| if(CommonSequenceTypes::ExactlyOneString->matches(m_operand->staticType())) |
| return m_operand; |
| } |
| |
| return me; |
| } |
| |
| SequenceType::List SimpleContentConstructor::expectedOperandTypes() const |
| { |
| SequenceType::List result; |
| result.append(CommonSequenceTypes::ZeroOrMoreAtomicTypes); |
| return result; |
| } |
| |
| SequenceType::Ptr SimpleContentConstructor::staticType() const |
| { |
| if(m_operand->staticType()->cardinality().allowsEmpty()) |
| return CommonSequenceTypes::ZeroOrOneString; |
| else |
| return CommonSequenceTypes::ExactlyOneString; |
| } |
| |
| ExpressionVisitorResult::Ptr SimpleContentConstructor::accept(const ExpressionVisitor::Ptr &visitor) const |
| { |
| return visitor->visit(this); |
| } |
| |
| QT_END_NAMESPACE |