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// 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_LEXER_H
#define _XFA_FM_LEXER_H
enum XFA_FM_TOKEN {
TOKand,
TOKlparen,
TOKrparen,
TOKmul,
TOKplus,
TOKcomma,
TOKminus,
TOKdot,
TOKdiv,
TOKlt,
TOKassign,
TOKgt,
TOKlbracket,
TOKrbracket,
TOKor,
TOKdotscream,
TOKdotstar,
TOKdotdot,
TOKle,
TOKne,
TOKeq,
TOKge,
TOKdo,
TOKkseq,
TOKksge,
TOKksgt,
TOKif,
TOKin,
TOKksle,
TOKkslt,
TOKksne,
TOKksor,
TOKnull,
TOKbreak,
TOKksand,
TOKend,
TOKeof,
TOKfor,
TOKnan,
TOKksnot,
TOKvar,
TOKthen,
TOKelse,
TOKexit,
TOKdownto,
TOKreturn,
TOKinfinity,
TOKendwhile,
TOKforeach,
TOKendfunc,
TOKelseif,
TOKwhile,
TOKendfor,
TOKthrow,
TOKstep,
TOKupto,
TOKcontinue,
TOKfunc,
TOKendif,
TOKstar,
TOKidentifier,
TOKunderscore,
TOKdollar,
TOKexclamation,
TOKcall,
TOKstring,
TOKnumber,
TOKreserver
};
struct XFA_FMKeyword {
XFA_FM_TOKEN m_type;
uint32_t m_uHash;
const FX_WCHAR* m_keword;
};
const FX_WCHAR* XFA_FM_KeywordToString(XFA_FM_TOKEN op);
class CXFA_FMToken {
public:
CXFA_FMToken();
CXFA_FMToken(FX_DWORD uLineNum);
~CXFA_FMToken();
CFX_WideStringC m_wstring;
XFA_FM_TOKEN m_type;
FX_DWORD m_uLinenum;
CXFA_FMToken* m_pNext;
};
class CXFA_FMLexer {
public:
CXFA_FMLexer(const CFX_WideStringC& wsFormcalc, CXFA_FMErrorInfo* pErrorInfo);
~CXFA_FMLexer();
CXFA_FMToken* NextToken();
FX_DWORD Number(CXFA_FMToken* t, const FX_WCHAR* p, const FX_WCHAR*& pEnd);
FX_DWORD String(CXFA_FMToken* t, const FX_WCHAR* p, const FX_WCHAR*& pEnd);
FX_DWORD Identifiers(CXFA_FMToken* t,
const FX_WCHAR* p,
const FX_WCHAR*& pEnd);
void Comment(const FX_WCHAR* p, const FX_WCHAR*& pEnd);
XFA_FM_TOKEN IsKeyword(const CFX_WideStringC& p);
void SetCurrentLine(FX_DWORD line) { m_uCurrentLine = line; }
void SetToken(CXFA_FMToken* pToken) {
if (m_pToken) {
delete m_pToken;
}
m_pToken = pToken;
}
const FX_WCHAR* SavePos() { return m_ptr; }
void RestorePos(const FX_WCHAR* pPos) { m_ptr = pPos; }
void Error(XFA_FM_ERRMSG msg, ...);
FX_BOOL HasError() const;
protected:
CXFA_FMToken* Scan();
const FX_WCHAR* m_pScript;
const FX_WCHAR* m_ptr;
FX_STRSIZE m_uLength;
FX_DWORD m_uCurrentLine;
CXFA_FMToken* m_pToken;
CXFA_FMErrorInfo* m_pErrorInfo;
};
#endif
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