1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/*
AngelCode Scripting Library
Copyright (c) 2003-2018 Andreas Jonsson
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you
must not claim that you wrote the original software. If you use
this software in a product, an acknowledgment in the product
documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
The original version of this library can be located at:
http://www.angelcode.com/angelscript/
Andreas Jonsson
andreas@angelcode.com
*/
//
// as_parser.h
//
// This class parses the script code and builds a tree for compilation
//
#ifndef AS_PARSER_H
#define AS_PARSER_H
#include "as_scriptnode.h"
#include "as_scriptcode.h"
#include "as_builder.h"
#include "as_tokenizer.h"
BEGIN_AS_NAMESPACE
class asCParser {
public:
asCParser(asCBuilder *builder);
~asCParser();
int ParseFunctionDefinition(asCScriptCode *script, bool expectListPattern);
int ParsePropertyDeclaration(asCScriptCode *script);
int ParseDataType(asCScriptCode *script, bool isReturnType);
int ParseTemplateDecl(asCScriptCode *script);
#ifndef AS_NO_COMPILER
int ParseScript(asCScriptCode *script);
// Called from compiler
int ParseStatementBlock(asCScriptCode *script, asCScriptNode *block);
int ParseVarInit(asCScriptCode *script, asCScriptNode *init);
int ParseExpression(asCScriptCode *script);
#endif
asCScriptNode *GetScriptNode();
protected:
void Reset();
void GetToken(sToken *token);
void RewindTo(const sToken *token);
void SetPos(size_t pos);
void Error(const asCString &text, sToken *token);
void Warning(const asCString &text, sToken *token);
void Info(const asCString &text, sToken *token);
asCScriptNode *CreateNode(eScriptNode type);
asCScriptNode *ParseFunctionDefinition();
asCScriptNode *ParseParameterList();
asCScriptNode *SuperficiallyParseExpression();
asCScriptNode *ParseType(bool allowConst, bool allowVariableType = false, bool allowAuto = false);
asCScriptNode *ParseTypeMod(bool isParam);
void ParseOptionalScope(asCScriptNode *node);
asCScriptNode *ParseRealType();
asCScriptNode *ParseDataType(bool allowVariableType = false, bool allowAuto = false);
asCScriptNode *ParseIdentifier();
bool ParseTemplTypeList(asCScriptNode *node, bool required = true);
void ParseMethodAttributes(asCScriptNode *funcNode);
asCScriptNode *ParseListPattern();
bool IsRealType(int tokenType);
bool IsDataType(const sToken &token);
bool IdentifierIs(const sToken &t, const char *str);
#ifndef AS_NO_COMPILER
// Statements
asCScriptNode *SuperficiallyParseStatementBlock();
asCScriptNode *SuperficiallyParseVarInit();
asCScriptNode *ParseStatementBlock();
asCScriptNode *ParseStatement();
asCScriptNode *ParseExpressionStatement();
asCScriptNode *ParseSwitch();
asCScriptNode *ParseCase();
asCScriptNode *ParseIf();
asCScriptNode *ParseFor();
asCScriptNode *ParseWhile();
asCScriptNode *ParseDoWhile();
asCScriptNode *ParseReturn();
asCScriptNode *ParseBreak();
asCScriptNode *ParseContinue();
asCScriptNode *ParseTryCatch();
// Declarations
asCScriptNode *ParseDeclaration(bool isClassProp = false, bool isGlobalVar = false);
asCScriptNode *ParseImport();
asCScriptNode *ParseScript(bool inBlock);
asCScriptNode *ParseNamespace();
asCScriptNode *ParseFunction(bool isMethod = false);
asCScriptNode *ParseFuncDef();
asCScriptNode *ParseClass();
asCScriptNode *ParseMixin();
asCScriptNode *ParseInitList();
asCScriptNode *ParseInterface();
asCScriptNode *ParseInterfaceMethod();
asCScriptNode *ParseVirtualPropertyDecl(bool isMethod, bool isInterface);
asCScriptNode *ParseEnumeration();
asCScriptNode *ParseTypedef();
bool IsVarDecl();
bool IsVirtualPropertyDecl();
bool IsFuncDecl(bool isMethod);
bool IsLambda();
bool IsFunctionCall();
// Expressions
asCScriptNode *ParseAssignment();
asCScriptNode *ParseAssignOperator();
asCScriptNode *ParseCondition();
asCScriptNode *ParseExpression();
asCScriptNode *ParseExprTerm();
asCScriptNode *ParseExprOperator();
asCScriptNode *ParseExprPreOp();
asCScriptNode *ParseExprPostOp();
asCScriptNode *ParseExprValue();
asCScriptNode *ParseArgList(bool withParenthesis = true);
asCScriptNode *ParseFunctionCall();
asCScriptNode *ParseVariableAccess();
asCScriptNode *ParseConstructCall();
asCScriptNode *ParseCast();
asCScriptNode *ParseConstant();
asCScriptNode *ParseStringConstant();
asCScriptNode *ParseLambda();
bool IsType(sToken &nextToken);
bool IsConstant(int tokenType);
bool IsOperator(int tokenType);
bool IsPreOperator(int tokenType);
bool IsPostOperator(int tokenType);
bool IsAssignOperator(int tokenType);
bool CheckTemplateType(const sToken &t);
#endif
asCScriptNode *ParseToken(int token);
asCScriptNode *ParseOneOf(int *tokens, int num);
asCString ExpectedToken(const char *token);
asCString ExpectedTokens(const char *token1, const char *token2);
asCString ExpectedOneOf(int *tokens, int count);
asCString ExpectedOneOf(const char **tokens, int count);
asCString InsteadFound(sToken &t);
bool errorWhileParsing;
bool isSyntaxError;
bool checkValidTypes;
bool isParsingAppInterface;
asCScriptEngine *engine;
asCBuilder *builder;
asCScriptCode *script;
asCScriptNode *scriptNode;
asCString tempString; // Used for reduzing amount of dynamic allocations
sToken lastToken;
size_t sourcePos;
};
END_AS_NAMESPACE
#endif
|
