| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef XFA_FXFA_FM2JS_CXFA_FMEXPRESSION_H_ |
| #define XFA_FXFA_FM2JS_CXFA_FMEXPRESSION_H_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "third_party/base/optional.h" |
| #include "xfa/fxfa/fm2js/cxfa_fmlexer.h" |
| |
| class CFX_WideTextBuf; |
| |
| enum XFA_FM_AccessorIndex { |
| ACCESSOR_NO_INDEX, |
| ACCESSOR_NO_RELATIVEINDEX, |
| ACCESSOR_POSITIVE_INDEX, |
| ACCESSOR_NEGATIVE_INDEX |
| }; |
| |
| enum class ReturnType { kImplied, kInfered }; |
| |
| class CXFA_FMExpression { |
| public: |
| virtual ~CXFA_FMExpression(); |
| virtual bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const = 0; |
| |
| protected: |
| CXFA_FMExpression(); |
| }; |
| |
| class CXFA_FMSimpleExpression : public CXFA_FMExpression { |
| public: |
| ~CXFA_FMSimpleExpression() override; |
| |
| XFA_FM_TOKEN GetOperatorToken() const { return m_op; } |
| bool chainable() const { return m_bChainable; } |
| |
| protected: |
| explicit CXFA_FMSimpleExpression(XFA_FM_TOKEN op); |
| CXFA_FMSimpleExpression(XFA_FM_TOKEN op, bool chainable); |
| |
| private: |
| const XFA_FM_TOKEN m_op; |
| const bool m_bChainable; |
| }; |
| |
| class CXFA_FMChainableExpression : public CXFA_FMSimpleExpression { |
| public: |
| ~CXFA_FMChainableExpression() override; |
| |
| protected: |
| CXFA_FMChainableExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| |
| CXFA_FMSimpleExpression* GetFirstExpression() const; |
| CXFA_FMSimpleExpression* GetSecondExpression() const; |
| |
| private: |
| // Iteratively delete a chainable expression tree in linear time and constant |
| // space. |
| static void DeleteChain(std::unique_ptr<CXFA_FMSimpleExpression> pRoot); |
| |
| std::unique_ptr<CXFA_FMSimpleExpression> m_pExp1; |
| std::unique_ptr<CXFA_FMSimpleExpression> m_pExp2; |
| }; |
| |
| class CXFA_FMNullExpression final : public CXFA_FMSimpleExpression { |
| public: |
| CXFA_FMNullExpression(); |
| ~CXFA_FMNullExpression() override = default; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| }; |
| |
| class CXFA_FMNumberExpression final : public CXFA_FMSimpleExpression { |
| public: |
| explicit CXFA_FMNumberExpression(WideStringView wsNumber); |
| ~CXFA_FMNumberExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| WideStringView m_wsNumber; |
| }; |
| |
| class CXFA_FMStringExpression final : public CXFA_FMSimpleExpression { |
| public: |
| explicit CXFA_FMStringExpression(WideStringView wsString); |
| ~CXFA_FMStringExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| WideStringView m_wsString; |
| }; |
| |
| class CXFA_FMIdentifierExpression final : public CXFA_FMSimpleExpression { |
| public: |
| explicit CXFA_FMIdentifierExpression(WideStringView wsIdentifier); |
| ~CXFA_FMIdentifierExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| WideStringView m_wsIdentifier; |
| }; |
| |
| class CXFA_FMAssignExpression final : public CXFA_FMChainableExpression { |
| public: |
| CXFA_FMAssignExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMAssignExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| }; |
| |
| class CXFA_FMBinExpression : public CXFA_FMChainableExpression { |
| public: |
| ~CXFA_FMBinExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| protected: |
| CXFA_FMBinExpression(const WideString& opName, |
| XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| |
| private: |
| WideString m_OpName; |
| }; |
| |
| class CXFA_FMLogicalOrExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMLogicalOrExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMLogicalOrExpression() override = default; |
| }; |
| |
| class CXFA_FMLogicalAndExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMLogicalAndExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMLogicalAndExpression() override = default; |
| }; |
| |
| class CXFA_FMEqualExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMEqualExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMEqualExpression() override = default; |
| }; |
| |
| class CXFA_FMNotEqualExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMNotEqualExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMNotEqualExpression() override = default; |
| }; |
| |
| class CXFA_FMGtExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMGtExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMGtExpression() override = default; |
| }; |
| |
| class CXFA_FMGeExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMGeExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMGeExpression() override = default; |
| }; |
| |
| class CXFA_FMLtExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMLtExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMLtExpression() override = default; |
| }; |
| |
| class CXFA_FMLeExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMLeExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMLeExpression() override = default; |
| }; |
| |
| class CXFA_FMPlusExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMPlusExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMPlusExpression() override = default; |
| }; |
| |
| class CXFA_FMMinusExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMMinusExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMMinusExpression() override = default; |
| }; |
| |
| class CXFA_FMMulExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMMulExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMMulExpression() override = default; |
| }; |
| |
| class CXFA_FMDivExpression final : public CXFA_FMBinExpression { |
| public: |
| CXFA_FMDivExpression(XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp2); |
| ~CXFA_FMDivExpression() override = default; |
| }; |
| |
| class CXFA_FMUnaryExpression : public CXFA_FMSimpleExpression { |
| public: |
| ~CXFA_FMUnaryExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| protected: |
| CXFA_FMUnaryExpression(const WideString& opName, |
| XFA_FM_TOKEN op, |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp); |
| |
| private: |
| WideString m_OpName; |
| std::unique_ptr<CXFA_FMSimpleExpression> m_pExp; |
| }; |
| |
| class CXFA_FMPosExpression final : public CXFA_FMUnaryExpression { |
| public: |
| explicit CXFA_FMPosExpression(std::unique_ptr<CXFA_FMSimpleExpression> pExp); |
| ~CXFA_FMPosExpression() override = default; |
| }; |
| |
| class CXFA_FMNegExpression final : public CXFA_FMUnaryExpression { |
| public: |
| explicit CXFA_FMNegExpression(std::unique_ptr<CXFA_FMSimpleExpression> pExp); |
| ~CXFA_FMNegExpression() override = default; |
| }; |
| |
| class CXFA_FMNotExpression final : public CXFA_FMUnaryExpression { |
| public: |
| explicit CXFA_FMNotExpression(std::unique_ptr<CXFA_FMSimpleExpression> pExp); |
| ~CXFA_FMNotExpression() override = default; |
| }; |
| |
| class CXFA_FMCallExpression final : public CXFA_FMSimpleExpression { |
| public: |
| CXFA_FMCallExpression( |
| std::unique_ptr<CXFA_FMSimpleExpression> pExp, |
| std::vector<std::unique_ptr<CXFA_FMSimpleExpression>>&& pArguments, |
| bool bIsSomMethod); |
| ~CXFA_FMCallExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| bool IsBuiltInFunc(CFX_WideTextBuf* funcName) const; |
| uint32_t IsMethodWithObjParam(const WideString& methodName) const; |
| |
| private: |
| std::unique_ptr<CXFA_FMSimpleExpression> m_pExp; |
| bool m_bIsSomMethod; |
| std::vector<std::unique_ptr<CXFA_FMSimpleExpression>> m_Arguments; |
| }; |
| |
| class CXFA_FMDotAccessorExpression final : public CXFA_FMChainableExpression { |
| public: |
| CXFA_FMDotAccessorExpression( |
| std::unique_ptr<CXFA_FMSimpleExpression> pAccessor, |
| XFA_FM_TOKEN op, |
| WideStringView wsIdentifier, |
| std::unique_ptr<CXFA_FMSimpleExpression> pIndexExp); |
| ~CXFA_FMDotAccessorExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| WideStringView m_wsIdentifier; |
| }; |
| |
| class CXFA_FMIndexExpression final : public CXFA_FMSimpleExpression { |
| public: |
| CXFA_FMIndexExpression(XFA_FM_AccessorIndex accessorIndex, |
| std::unique_ptr<CXFA_FMSimpleExpression> pIndexExp, |
| bool bIsStarIndex); |
| ~CXFA_FMIndexExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| std::unique_ptr<CXFA_FMSimpleExpression> m_pExp; |
| XFA_FM_AccessorIndex m_accessorIndex; |
| bool m_bIsStarIndex; |
| }; |
| |
| class CXFA_FMDotDotAccessorExpression final |
| : public CXFA_FMChainableExpression { |
| public: |
| CXFA_FMDotDotAccessorExpression( |
| std::unique_ptr<CXFA_FMSimpleExpression> pAccessor, |
| XFA_FM_TOKEN op, |
| WideStringView wsIdentifier, |
| std::unique_ptr<CXFA_FMSimpleExpression> pIndexExp); |
| ~CXFA_FMDotDotAccessorExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| WideStringView m_wsIdentifier; |
| }; |
| |
| class CXFA_FMMethodCallExpression final : public CXFA_FMChainableExpression { |
| public: |
| CXFA_FMMethodCallExpression( |
| std::unique_ptr<CXFA_FMSimpleExpression> pAccessorExp1, |
| std::unique_ptr<CXFA_FMSimpleExpression> pCallExp); |
| ~CXFA_FMMethodCallExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| }; |
| |
| bool CXFA_IsTooBig(const CFX_WideTextBuf& js); |
| |
| class CXFA_FMFunctionDefinition final : public CXFA_FMExpression { |
| public: |
| CXFA_FMFunctionDefinition( |
| WideStringView wsName, |
| std::vector<WideStringView>&& arguments, |
| std::vector<std::unique_ptr<CXFA_FMExpression>>&& expressions); |
| ~CXFA_FMFunctionDefinition() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| const WideStringView m_wsName; |
| std::vector<WideStringView> const m_pArguments; |
| std::vector<std::unique_ptr<CXFA_FMExpression>> const m_pExpressions; |
| }; |
| |
| class CXFA_FMVarExpression final : public CXFA_FMExpression { |
| public: |
| CXFA_FMVarExpression(WideStringView wsName, |
| std::unique_ptr<CXFA_FMSimpleExpression> pInit); |
| ~CXFA_FMVarExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| WideStringView const m_wsName; |
| std::unique_ptr<CXFA_FMSimpleExpression> const m_pInit; |
| }; |
| |
| class CXFA_FMExpExpression final : public CXFA_FMExpression { |
| public: |
| explicit CXFA_FMExpExpression( |
| std::unique_ptr<CXFA_FMSimpleExpression> pExpression); |
| ~CXFA_FMExpExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| std::unique_ptr<CXFA_FMSimpleExpression> const m_pExpression; |
| }; |
| |
| class CXFA_FMBlockExpression final : public CXFA_FMExpression { |
| public: |
| CXFA_FMBlockExpression( |
| std::vector<std::unique_ptr<CXFA_FMExpression>>&& pExpressionList); |
| ~CXFA_FMBlockExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| std::vector<std::unique_ptr<CXFA_FMExpression>> const m_ExpressionList; |
| }; |
| |
| class CXFA_FMDoExpression final : public CXFA_FMExpression { |
| public: |
| explicit CXFA_FMDoExpression(std::unique_ptr<CXFA_FMExpression> pList); |
| ~CXFA_FMDoExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| std::unique_ptr<CXFA_FMExpression> const m_pList; |
| }; |
| |
| class CXFA_FMIfExpression final : public CXFA_FMExpression { |
| public: |
| CXFA_FMIfExpression( |
| std::unique_ptr<CXFA_FMSimpleExpression> pExpression, |
| std::unique_ptr<CXFA_FMExpression> pIfExpression, |
| std::vector<std::unique_ptr<CXFA_FMIfExpression>> pElseIfExpressions, |
| std::unique_ptr<CXFA_FMExpression> pElseExpression); |
| ~CXFA_FMIfExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| std::unique_ptr<CXFA_FMSimpleExpression> const m_pExpression; |
| std::unique_ptr<CXFA_FMExpression> const m_pIfExpression; |
| std::vector<std::unique_ptr<CXFA_FMIfExpression>> const m_pElseIfExpressions; |
| std::unique_ptr<CXFA_FMExpression> const m_pElseExpression; |
| }; |
| |
| class CXFA_FMWhileExpression final : public CXFA_FMExpression { |
| public: |
| CXFA_FMWhileExpression(std::unique_ptr<CXFA_FMSimpleExpression> pCodition, |
| std::unique_ptr<CXFA_FMExpression> pExpression); |
| ~CXFA_FMWhileExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| std::unique_ptr<CXFA_FMSimpleExpression> const m_pCondition; |
| std::unique_ptr<CXFA_FMExpression> const m_pExpression; |
| }; |
| |
| class CXFA_FMBreakExpression final : public CXFA_FMExpression { |
| public: |
| CXFA_FMBreakExpression(); |
| ~CXFA_FMBreakExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| }; |
| |
| class CXFA_FMContinueExpression final : public CXFA_FMExpression { |
| public: |
| CXFA_FMContinueExpression(); |
| ~CXFA_FMContinueExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| }; |
| |
| class CXFA_FMForExpression final : public CXFA_FMExpression { |
| public: |
| CXFA_FMForExpression(WideStringView wsVariant, |
| std::unique_ptr<CXFA_FMSimpleExpression> pAssignment, |
| std::unique_ptr<CXFA_FMSimpleExpression> pAccessor, |
| int32_t iDirection, |
| std::unique_ptr<CXFA_FMSimpleExpression> pStep, |
| std::unique_ptr<CXFA_FMExpression> pList); |
| ~CXFA_FMForExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| const WideStringView m_wsVariant; |
| std::unique_ptr<CXFA_FMSimpleExpression> const m_pAssignment; |
| std::unique_ptr<CXFA_FMSimpleExpression> const m_pAccessor; |
| const bool m_bDirection; |
| std::unique_ptr<CXFA_FMSimpleExpression> const m_pStep; |
| std::unique_ptr<CXFA_FMExpression> const m_pList; |
| }; |
| |
| class CXFA_FMForeachExpression final : public CXFA_FMExpression { |
| public: |
| // Takes ownership of |pAccessors|. |
| CXFA_FMForeachExpression( |
| WideStringView wsIdentifier, |
| std::vector<std::unique_ptr<CXFA_FMSimpleExpression>>&& pAccessors, |
| std::unique_ptr<CXFA_FMExpression> pList); |
| ~CXFA_FMForeachExpression() override; |
| |
| bool ToJavaScript(CFX_WideTextBuf* js, ReturnType type) const override; |
| |
| private: |
| const WideStringView m_wsIdentifier; |
| std::vector<std::unique_ptr<CXFA_FMSimpleExpression>> const m_pAccessors; |
| std::unique_ptr<CXFA_FMExpression> const m_pList; |
| }; |
| |
| class CXFA_FMAST { |
| public: |
| explicit CXFA_FMAST( |
| std::vector<std::unique_ptr<CXFA_FMExpression>> expressions); |
| ~CXFA_FMAST(); |
| |
| Optional<CFX_WideTextBuf> ToJavaScript() const; |
| |
| private: |
| std::vector<std::unique_ptr<CXFA_FMExpression>> const expressions_; |
| }; |
| |
| #endif // XFA_FXFA_FM2JS_CXFA_FMEXPRESSION_H_ |