// 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_FM_EXPRESSION_H
#define _XFA_FM_EXPRESSION_H
enum XFA_FM_EXPTYPE {
    XFA_FM_EXPTYPE_UNKNOWN,
    XFA_FM_EXPTYPE_FUNC,
    XFA_FM_EXPTYPE_VAR,
    XFA_FM_EXPTYPE_EXP,
    XFA_FM_EXPTYPE_BLOCK,
    XFA_FM_EXPTYPE_IF,
    XFA_FM_EXPTYPE_BREAK,
    XFA_FM_EXPTYPE_CONTINUE,
};
class CXFA_FMExpression
{
public:
    CXFA_FMExpression(FX_DWORD line);
    CXFA_FMExpression(FX_DWORD line, XFA_FM_EXPTYPE type);
    virtual ~CXFA_FMExpression() {};
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
    FX_DWORD GetLine()
    {
        return m_line;
    }
    XFA_FM_EXPTYPE GetExpType() const
    {
        return m_type;
    }
protected:
    XFA_FM_EXPTYPE m_type;
    FX_DWORD m_line;
};
class CXFA_FMFunctionDefinition : public CXFA_FMExpression
{
public:
    CXFA_FMFunctionDefinition(FX_DWORD line, FX_BOOL isGlobal, FX_WSTR wsName, CFX_WideStringCArray *pArguments, CFX_PtrArray *pExpressions);
    virtual ~CXFA_FMFunctionDefinition();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CFX_WideStringC m_wsName;
    CFX_WideStringCArray *m_pArguments;
    CFX_PtrArray *m_pExpressions;
    FX_BOOL m_isGlobal;
};
class CXFA_FMVarExpression : public CXFA_FMExpression
{
public:
    CXFA_FMVarExpression(FX_DWORD line, FX_WSTR wsName, CXFA_FMExpression *pInit);
    virtual ~CXFA_FMVarExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CFX_WideStringC m_wsName;
    CXFA_FMExpression *m_pInit;
};
class CXFA_FMExpExpression : public CXFA_FMExpression
{
public:
    CXFA_FMExpExpression(FX_DWORD line, CXFA_FMSimpleExpression *pExpression);
    virtual ~CXFA_FMExpExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CXFA_FMSimpleExpression *m_pExpression;
};
class CXFA_FMBlockExpression : public CXFA_FMExpression
{
public:
    CXFA_FMBlockExpression(FX_DWORD line, CFX_PtrArray *pExpressionList);
    virtual ~CXFA_FMBlockExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CFX_PtrArray *m_pExpressionList;
};
class CXFA_FMDoExpression : public CXFA_FMExpression
{
public:
    CXFA_FMDoExpression(FX_DWORD line, CXFA_FMExpression *pList);
    virtual ~CXFA_FMDoExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CXFA_FMExpression *m_pList;
};
class CXFA_FMIfExpression : public CXFA_FMExpression
{
public:
    CXFA_FMIfExpression(FX_DWORD line, CXFA_FMSimpleExpression *pExpression, CXFA_FMExpression *pIfExpression, CXFA_FMExpression *pElseExpression);
    virtual ~CXFA_FMIfExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CXFA_FMSimpleExpression *m_pExpression;
    CXFA_FMExpression	*m_pIfExpression;
    CXFA_FMExpression	*m_pElseExpression;
};
class CXFA_FMLoopExpression : public CXFA_FMExpression
{
public:
    CXFA_FMLoopExpression(FX_DWORD line) : CXFA_FMExpression(line) {}
    virtual ~CXFA_FMLoopExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
};
class CXFA_FMWhileExpression : public CXFA_FMLoopExpression
{
public:
    CXFA_FMWhileExpression(FX_DWORD line, CXFA_FMSimpleExpression *pCodition, CXFA_FMExpression *pExpression);
    virtual ~CXFA_FMWhileExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CXFA_FMSimpleExpression *m_pCondition;
    CXFA_FMExpression *m_pExpression;
};
class CXFA_FMBreakExpression : public CXFA_FMExpression
{
public:
    CXFA_FMBreakExpression(FX_DWORD line);
    virtual ~CXFA_FMBreakExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CXFA_FMLoopExpression *m_pExpression;
};
class CXFA_FMContinueExpression : public CXFA_FMExpression
{
public:
    CXFA_FMContinueExpression(FX_DWORD line);
    virtual ~CXFA_FMContinueExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CXFA_FMLoopExpression *m_pExpression;
};
class CXFA_FMForExpression : public CXFA_FMLoopExpression
{
public:
    CXFA_FMForExpression(FX_DWORD line, FX_WSTR wsVariant, CXFA_FMSimpleExpression *pAssignment,
                         CXFA_FMSimpleExpression *pAccessor, int32_t iDirection, CXFA_FMSimpleExpression *pStep, CXFA_FMExpression *pList);
    virtual ~CXFA_FMForExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CFX_WideStringC m_wsVariant;
    CXFA_FMSimpleExpression * m_pAssignment;
    CXFA_FMSimpleExpression *m_pAccessor;
    int32_t m_iDirection;
    CXFA_FMSimpleExpression *m_pStep;
    CXFA_FMExpression *m_pList;
};
class CXFA_FMForeachExpression : public CXFA_FMLoopExpression
{
public:
    CXFA_FMForeachExpression(FX_DWORD line, FX_WSTR wsIdentifier, CFX_PtrArray *pAccessors, CXFA_FMExpression *pList);
    virtual ~CXFA_FMForeachExpression();
    virtual void ToJavaScript(CFX_WideTextBuf& javascript);
    virtual void ToImpliedReturnJS(CFX_WideTextBuf&);
private:
    CFX_WideStringC m_wsIdentifier;
    CFX_PtrArray *m_pAccessors;
    CXFA_FMExpression *m_pList;
};
#endif