comparison: src/script/parser.h
src/script/parser.h
- branch
- scripting
- changeset 921
- e2e9f594de66
- child 922
- 81887a77baa0
equal
deleted
inserted
replaced
| 920:147497785496 | 921:e2e9f594de66 |
|---|---|
| 1 #pragma once | |
| 2 #include <QString> | |
| 3 #include "ast.h" | |
| 4 | |
| 5 namespace Script | |
| 6 { | |
| 7 enum TokenType | |
| 8 { | |
| 9 TOK_Dollar, | |
| 10 TOK_Semicolon, | |
| 11 TOK_BraceLeft, | |
| 12 TOK_BraceRight, | |
| 13 TOK_BracketLeft, | |
| 14 TOK_BracketRight, | |
| 15 TOK_ParenLeft, | |
| 16 TOK_ParenRight, | |
| 17 TOK_String, | |
| 18 TOK_Symbol, | |
| 19 TOK_Number, | |
| 20 TOK_Any | |
| 21 }; | |
| 22 | |
| 23 enum Type | |
| 24 { | |
| 25 TYPE_Var, // mixed | |
| 26 TYPE_Int, | |
| 27 TYPE_Real, | |
| 28 TYPE_String, | |
| 29 TYPE_Type, // heh | |
| 30 TYPE_Vertex, | |
| 31 TYPE_Object, | |
| 32 TYPE_Line, | |
| 33 TYPE_OptLine, | |
| 34 TYPE_Triangle, | |
| 35 TYPE_Quad, | |
| 36 TYPE_Reference, | |
| 37 }; | |
| 38 | |
| 39 enum Function | |
| 40 { | |
| 41 FUNC_Abs, | |
| 42 FUNC_Print, | |
| 43 FUNC_Typeof, | |
| 44 }; | |
| 45 | |
| 46 struct Token | |
| 47 { | |
| 48 TokenType type; | |
| 49 QString text; | |
| 50 }; | |
| 51 | |
| 52 struct SavedPosition | |
| 53 { | |
| 54 int position; | |
| 55 int lineNumber; | |
| 56 | |
| 57 void reset() | |
| 58 { | |
| 59 position = 0; | |
| 60 lineNumber = 1; | |
| 61 } | |
| 62 }; | |
| 63 | |
| 64 class ParseError : public std::exception | |
| 65 { | |
| 66 public: | |
| 67 ParseError(QString text) : m_text (text) {} | |
| 68 const char* what() const { return m_text; } | |
| 69 | |
| 70 private: | |
| 71 QString m_text; | |
| 72 }; | |
| 73 | |
| 74 class Parser | |
| 75 { | |
| 76 public: | |
| 77 Parser(QString text); | |
| 78 ~Parser(); | |
| 79 | |
| 80 void parse(); | |
| 81 void scriptError(QString text) { throw ParseError(text); } | |
| 82 bool next(TokenType desiredType = TOK_Any); | |
| 83 void mustGetNext(TokenType desiredType = TOK_Any); | |
| 84 bool peekNext(Token& tok); | |
| 85 const SavedPosition& position() const; | |
| 86 void setPosition(const SavedPosition& pos); | |
| 87 | |
| 88 private: | |
| 89 QString m_data; | |
| 90 SavedPosition m_position; | |
| 91 Token m_token; | |
| 92 AstNode* m_astRoot; | |
| 93 }; | |
| 94 } |
