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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_FXFA_FM2JS_CXFA_FMLEXER_H_
#define XFA_FXFA_FM2JS_CXFA_FMLEXER_H_
#include <memory>
#include <utility>
#include "core/fxcrt/fx_string.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_hash;
const wchar_t* m_keyword;
};
class CXFA_FMToken {
public:
CXFA_FMToken();
explicit CXFA_FMToken(uint32_t line_num);
~CXFA_FMToken();
CFX_WideString ToDebugString() const;
CFX_WideStringC m_string;
XFA_FM_TOKEN m_type;
uint32_t m_line_num;
};
class CXFA_FMLexer {
public:
explicit CXFA_FMLexer(const CFX_WideStringC& wsFormcalc);
~CXFA_FMLexer();
CXFA_FMToken* NextToken();
bool HasError() const { return m_lexer_error; }
void SetCurrentLine(uint32_t line) { m_current_line = line; }
void SetToken(std::unique_ptr<CXFA_FMToken> token) {
m_token = std::move(token);
}
const wchar_t* GetPos() { return m_cursor; }
void SetPos(const wchar_t* pos) { m_cursor = pos; }
private:
void AdvanceForNumber();
void AdvanceForString();
void AdvanceForIdentifier();
void AdvanceForComment();
const wchar_t* m_cursor;
const wchar_t* const m_end;
uint32_t m_current_line;
std::unique_ptr<CXFA_FMToken> m_token;
bool m_lexer_error;
};
#endif // XFA_FXFA_FM2JS_CXFA_FMLEXER_H_
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