1 files changed, 134 insertions, 0 deletions
diff --git a/xfa/fxfa/fm2js/xfa_lexer.h b/xfa/fxfa/fm2js/xfa_lexer.h
new file mode 100644
index 0000000000..b0d6069683
--- /dev/null
+++ b/xfa/fxfa/fm2js/xfa_lexer.h
@@ -0,0 +1,134 @@
+// 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_XFA_LEXER_H_
+#define XFA_FXFA_FM2JS_XFA_LEXER_H_
+
+#include <memory>
+
+#include "core/include/fxcrt/fx_string.h"
+#include "xfa/fxfa/fm2js/xfa_error.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_keyword;
+};
+
+const FX_WCHAR* XFA_FM_KeywordToString(XFA_FM_TOKEN op);
+
+class CXFA_FMToken {
+ public:
+  CXFA_FMToken();
+  explicit CXFA_FMToken(FX_DWORD uLineNum);
+
+  CFX_WideStringC m_wstring;
+  XFA_FM_TOKEN m_type;
+  FX_DWORD m_uLinenum;
+};
+
+class CXFA_FMLexer {
+ public:
+  CXFA_FMLexer(const CFX_WideStringC& wsFormcalc, CXFA_FMErrorInfo* pErrorInfo);
+  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.get() != pToken)
+      m_pToken.reset(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_ptr;
+  FX_DWORD m_uCurrentLine;
+  std::unique_ptr<CXFA_FMToken> m_pToken;
+  CXFA_FMErrorInfo* m_pErrorInfo;
+};
+
+#endif  // XFA_FXFA_FM2JS_XFA_LEXER_H_