diff options
Diffstat (limited to 'WebCore/xml/XPathValue.cpp')
-rw-r--r-- | WebCore/xml/XPathValue.cpp | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/WebCore/xml/XPathValue.cpp b/WebCore/xml/XPathValue.cpp new file mode 100644 index 0000000..b3cad38 --- /dev/null +++ b/WebCore/xml/XPathValue.cpp @@ -0,0 +1,128 @@ +/* + * Copyright 2005 Frerich Raabe <raabe@kde.org> + * Copyright (C) 2006 Apple Computer, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "XPathValue.h" + +#if ENABLE(XPATH) + +#include "Node.h" +#include "XPathUtil.h" + +#include <wtf/MathExtras.h> +#include <limits> + +using std::numeric_limits; + +namespace WebCore { +namespace XPath { + +const Value::AdoptTag Value::adopt = {}; + +const NodeSet& Value::toNodeSet() const +{ + if (!m_data) { + static NodeSet emptyNodeSet; + return emptyNodeSet; + } + + return m_data->m_nodeSet; +} + +NodeSet& Value::modifiableNodeSet() +{ + if (!m_data) + m_data = ValueData::create(); + + m_type = NodeSetValue; + return m_data->m_nodeSet; +} + +bool Value::toBoolean() const +{ + switch (m_type) { + case NodeSetValue: + return !m_data->m_nodeSet.isEmpty(); + case BooleanValue: + return m_bool; + case NumberValue: + return m_number != 0 && !isnan(m_number); + case StringValue: + return !m_data->m_string.isEmpty(); + } + ASSERT_NOT_REACHED(); + return false; +} + +double Value::toNumber() const +{ + switch (m_type) { + case NodeSetValue: + return Value(toString()).toNumber(); + case NumberValue: + return m_number; + case StringValue: { + bool canConvert; + double value = m_data->m_string.simplifyWhiteSpace().toDouble(&canConvert); + if (canConvert) + return value; + return numeric_limits<double>::quiet_NaN(); + } + case BooleanValue: + return m_bool; + } + ASSERT_NOT_REACHED(); + return 0.0; +} + +String Value::toString() const +{ + switch (m_type) { + case NodeSetValue: + if (m_data->m_nodeSet.isEmpty()) + return ""; + return stringValue(m_data->m_nodeSet.firstNode()); + case StringValue: + return m_data->m_string; + case NumberValue: + if (isnan(m_number)) + return "NaN"; + if (m_number == 0) + return "0"; + if (isinf(m_number)) + return signbit(m_number) ? "-Infinity" : "Infinity"; + return String::number(m_number); + case BooleanValue: + return m_bool ? "true" : "false"; + } + ASSERT_NOT_REACHED(); + return String(); +} + +} +} + +#endif // ENABLE(XPATH) |