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42 #include "qqmlabstractexpression_p.h"
46 QQmlAbstractExpression::QQmlAbstractExpression()
47 : m_prevExpression(0), m_nextExpression(0)
51 QQmlAbstractExpression::~QQmlAbstractExpression()
53 if (m_prevExpression) {
54 *m_prevExpression = m_nextExpression;
56 m_nextExpression->m_prevExpression = m_prevExpression;
60 m_context.asT2()->_s = 0;
63 QQmlContextData *QQmlAbstractExpression::context() const
65 if (m_context.isT1()) return m_context.asT1();
66 else return m_context.asT2()->_c;
69 void QQmlAbstractExpression::setContext(QQmlContextData *context)
71 if (m_prevExpression) {
72 *m_prevExpression = m_nextExpression;
74 m_nextExpression->m_prevExpression = m_prevExpression;
79 if (m_context.isT1()) m_context = context;
80 else m_context.asT2()->_c = context;
83 m_nextExpression = context->expressions;
85 m_nextExpression->m_prevExpression = &m_nextExpression;
86 m_prevExpression = &context->expressions;
87 context->expressions = this;
91 void QQmlAbstractExpression::refresh()
95 bool QQmlAbstractExpression::isValid() const
97 return context() != 0;