| kumarashishg | 826308d | 2023-06-23 13:21:22 +0000 | [diff] [blame] | 1 | // Copyright 2014 The PDFium Authors |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | |
| 7 | #ifndef XFA_FXFA_FORMCALC_CXFA_FMPARSER_H_ |
| 8 | #define XFA_FXFA_FORMCALC_CXFA_FMPARSER_H_ |
| 9 | |
| 10 | #include <vector> |
| 11 | |
| 12 | #include "core/fxcrt/unowned_ptr.h" |
| 13 | #include "fxjs/gc/heap.h" |
| 14 | #include "third_party/abseil-cpp/absl/types/optional.h" |
| 15 | #include "v8/include/cppgc/macros.h" |
| 16 | #include "v8/include/cppgc/member.h" |
| 17 | #include "xfa/fxfa/formcalc/cxfa_fmexpression.h" |
| 18 | #include "xfa/fxfa/formcalc/cxfa_fmlexer.h" |
| 19 | |
| 20 | class CXFA_FMParser { |
| 21 | CPPGC_STACK_ALLOCATED(); // Allow Raw/Unowned pointers. |
| 22 | |
| 23 | public: |
| 24 | CXFA_FMParser(cppgc::Heap* heap, CXFA_FMLexer* pLexer); |
| 25 | ~CXFA_FMParser(); |
| 26 | |
| 27 | // Returned object is owned by cppgc heap. |
| 28 | CXFA_FMAST* Parse(); |
| 29 | bool HasError() const; |
| 30 | |
| 31 | void SetMaxParseDepthForTest(unsigned long max_depth) { |
| 32 | m_max_parse_depth = max_depth; |
| 33 | } |
| 34 | |
| 35 | private: |
| 36 | bool NextToken(); |
| 37 | bool CheckThenNext(XFA_FM_TOKEN op); |
| 38 | bool IncrementParseDepthAndCheck(); |
| 39 | |
| 40 | std::vector<cppgc::Member<CXFA_FMExpression>> ParseExpressionList(); |
| 41 | CXFA_FMExpression* ParseFunction(); |
| 42 | CXFA_FMExpression* ParseExpression(); |
| 43 | CXFA_FMExpression* ParseDeclarationExpression(); |
| 44 | CXFA_FMExpression* ParseExpExpression(); |
| 45 | CXFA_FMExpression* ParseIfExpression(); |
| 46 | CXFA_FMExpression* ParseWhileExpression(); |
| 47 | CXFA_FMExpression* ParseForExpression(); |
| 48 | CXFA_FMExpression* ParseForeachExpression(); |
| 49 | CXFA_FMExpression* ParseDoExpression(); |
| 50 | CXFA_FMSimpleExpression* ParseParenExpression(); |
| 51 | CXFA_FMSimpleExpression* ParseSimpleExpression(); |
| 52 | CXFA_FMSimpleExpression* ParseLogicalOrExpression(); |
| 53 | CXFA_FMSimpleExpression* ParseLogicalAndExpression(); |
| 54 | CXFA_FMSimpleExpression* ParseEqualityExpression(); |
| 55 | CXFA_FMSimpleExpression* ParseRelationalExpression(); |
| 56 | CXFA_FMSimpleExpression* ParseAdditiveExpression(); |
| 57 | CXFA_FMSimpleExpression* ParseMultiplicativeExpression(); |
| 58 | CXFA_FMSimpleExpression* ParseUnaryExpression(); |
| 59 | CXFA_FMSimpleExpression* ParsePrimaryExpression(); |
| 60 | CXFA_FMSimpleExpression* ParsePostExpression(CXFA_FMSimpleExpression* e); |
| 61 | CXFA_FMSimpleExpression* ParseIndexExpression(); |
| 62 | CXFA_FMSimpleExpression* ParseLiteral(); |
| 63 | absl::optional<std::vector<cppgc::Member<CXFA_FMSimpleExpression>>> |
| 64 | ParseArgumentList(); |
| 65 | |
| 66 | UnownedPtr<cppgc::Heap> const m_heap; |
| 67 | UnownedPtr<CXFA_FMLexer> m_lexer; |
| 68 | CXFA_FMLexer::Token m_token; |
| 69 | bool m_error = false; |
| 70 | unsigned long m_parse_depth = 0; |
| 71 | unsigned long m_max_parse_depth; |
| 72 | }; |
| 73 | |
| 74 | #endif // XFA_FXFA_FORMCALC_CXFA_FMPARSER_H_ |