Steve Pham
38261d0800
* Updated all copyright headers to split the longer original copyright line into 2 shorter lines Signed-off-by: Steve Pham <spham@amazon.com>
65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <AzCore/RTTI/RTTI.h>
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#include <ExpressionEngine/ExpressionElementParser.h>
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#include <ExpressionEngine/InternalTypes.h>
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namespace ExpressionEvaluation
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{
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struct VariableDescriptor
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{
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AZ_RTTI(VariableDescriptor, "{6D219DB1-3763-4408-A3E8-75E4AE66E9BD}");
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VariableDescriptor()
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{
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}
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VariableDescriptor(const AZStd::string& displayName)
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: m_displayName(displayName)
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, m_nameHash(AZ::Crc32(displayName))
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{
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}
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virtual ~VariableDescriptor() = default;
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AZStd::string m_displayName;
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AZ::Crc32 m_nameHash;
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};
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// Interface that adds in support for Variables into the Expression grammar.
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class VariableParser
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: public ExpressionElementParser
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{
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public:
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AZ_CLASS_ALLOCATOR(VariableParser, AZ::SystemAllocator, 0);
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static int GetVariableOperatorId()
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{
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return 1;
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}
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static ElementInformation GetVariableInformation(const AZStd::string& displayName);
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VariableParser();
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ExpressionParserId GetParserId() const override
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{
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return InternalTypes::Interfaces::InternalParser;
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}
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ParseResult ParseElement(const AZStd::string& inputText, size_t offset) const override;
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void EvaluateToken(const ElementInformation& parseResult, ExpressionResultStack& evaluationStack) const override;
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private:
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AZStd::regex m_regex;
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};
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}
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