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81 lines
2.2 KiB
C++
81 lines
2.2 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/std/string/regex.h>
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#include <AzCore/RTTI/RTTI.h>
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#include <ExpressionEvaluation/ExpressionEngine/ExpressionTree.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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// Shared interface for pushing Primitives onto the evaluation stack. Does not handle parsing.
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class PrimitiveParser
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: public ExpressionElementParser
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{
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public:
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AZ_CLASS_ALLOCATOR(PrimitiveParser, AZ::SystemAllocator, 0);
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PrimitiveParser() = default;
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void EvaluateToken(const ElementInformation& parseResult, ExpressionResultStack& evaluationStack) const override;
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};
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namespace Primitive
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{
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template<typename T>
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ElementInformation GetPrimitiveElement(const T& valueType)
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{
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ElementInformation primitiveInformation;
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primitiveInformation.m_allowOnOperatorStack = false;
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primitiveInformation.m_id = InternalTypes::Primitive;
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primitiveInformation.m_extraStore = valueType;
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return primitiveInformation;
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}
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}
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// Parser for basic numeric types
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class NumericPrimitiveParser
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: public PrimitiveParser
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{
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public:
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AZ_CLASS_ALLOCATOR(NumericPrimitiveParser, AZ::SystemAllocator, 0);
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NumericPrimitiveParser();
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ExpressionParserId GetParserId() const override;
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ParseResult ParseElement(const AZStd::string& inputText, size_t offset) const override;
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private:
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AZStd::regex m_regex;
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};
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// Parser for basic boolean types
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class BooleanPrimitiveParser
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: public PrimitiveParser
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{
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public:
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AZ_CLASS_ALLOCATOR(BooleanPrimitiveParser, AZ::SystemAllocator, 0);
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BooleanPrimitiveParser();
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ExpressionParserId GetParserId() const override;
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ParseResult ParseElement(const AZStd::string& inputText, size_t offset) 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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