6 #include <spiderscript.h>
9 typedef enum eAST_NodeTypes tAST_NodeType;
10 typedef struct sAST_Script tAST_Script;
11 typedef struct sAST_Function tAST_Function;
12 typedef struct sAST_Node tAST_Node;
13 typedef struct sAST_BlockState tAST_BlockState;
14 typedef struct sAST_Variable tAST_Variable;
23 NODETYPE_BLOCK, //!< Node Block
25 NODETYPE_VARIABLE, //!< Variable
26 NODETYPE_CONSTANT, //!< Runtime Constant
27 NODETYPE_STRING, //!< String Constant
28 NODETYPE_INTEGER, //!< Integer Constant
29 NODETYPE_REAL, //!< Real Constant
31 NODETYPE_DEFVAR, //!< Define a variable (Variable)
32 NODETYPE_SCOPE, //!< Dereference a Namespace/Class static
33 NODETYPE_ELEMENT, //!< Reference a class attribute
34 NODETYPE_CAST, //!< Cast a value to another (Uniop)
36 NODETYPE_RETURN, //!< Return from a function (reserved word)
37 NODETYPE_BREAK, //!< Break out of a loop
38 NODETYPE_CONTINUE, //!< Next loop iteration
39 NODETYPE_ASSIGN, //!< Variable assignment operator
40 NODETYPE_POSTINC, //!< Post-increment (i++) - Uniop
41 NODETYPE_POSTDEC, //!< Post-decrement (i--) - Uniop
42 NODETYPE_FUNCTIONCALL, //!< Call a function
43 NODETYPE_METHODCALL, //!< Call a class method
44 NODETYPE_CREATEOBJECT, //!< Create an object
46 NODETYPE_IF, //!< Conditional
47 NODETYPE_LOOP, //!< Looping Construct
49 NODETYPE_INDEX, //!< Index into an array
51 NODETYPE_LOGICALNOT, //!< Logical NOT operator
52 NODETYPE_LOGICALAND, //!< Logical AND operator
53 NODETYPE_LOGICALOR, //!< Logical OR operator
54 NODETYPE_LOGICALXOR, //!< Logical XOR operator
56 NODETYPE_EQUALS, //!< Comparison Equals
57 NODETYPE_LESSTHAN, //!< Comparison Less Than
58 NODETYPE_LESSTHANEQUAL, //!< Comparison Less Than or Equal
59 NODETYPE_GREATERTHAN, //!< Comparison Greater Than
60 NODETYPE_GREATERTHANEQUAL, //!< Comparison Greater Than or Equal
62 NODETYPE_BWNOT, //!< Bitwise NOT
63 NODETYPE_BWAND, //!< Bitwise AND
64 NODETYPE_BWOR, //!< Bitwise OR
65 NODETYPE_BWXOR, //!< Bitwise XOR
67 NODETYPE_BITSHIFTLEFT, //!< Bitwise Shift Left (Grow)
68 NODETYPE_BITSHIFTRIGHT, //!< Bitwise Shift Right (Shrink)
69 NODETYPE_BITROTATELEFT, //!< Bitwise Rotate Left (Grow)
71 NODETYPE_NEGATE, //!< Negagte
72 NODETYPE_ADD, //!< Add
73 NODETYPE_SUBTRACT, //!< Subtract
74 NODETYPE_MULTIPLY, //!< Multiply
75 NODETYPE_DIVIDE, //!< Divide
76 NODETYPE_MODULO, //!< Modulus
81 tSpiderVariant *Variant;
83 char *CurNamespace; //!< Current namespace prefix (NULL = Root) - No trailing .
88 // TODO: Namespaces and Classes
89 tAST_Function *Functions;
90 tAST_Function *LastFunction;
95 tAST_Function *Next; //!< Next function in list
97 tAST_Node *Code; //!< Function Code
98 tAST_Node *Arguments; // HACKJOB (Only NODETYPE_DEFVAR is allowed)
99 tAST_Node *Arguments_Last;
101 char Name[]; //!< Function Name
106 tAST_Node *NextSibling;
112 void *BlockState; //!< BlockState pointer (for cache integrity)
113 int BlockIdent; //!< Ident (same as above)
114 void *ValueCache; //!< Cached value / pointer
119 tAST_Node *FirstChild;
120 tAST_Node *LastChild;
147 tAST_Node *Condition;
155 tAST_Node *Condition;
156 tAST_Node *Increment;
162 * \note Used for \a NODETYPE_VARIABLE and \a NODETYPE_CONSTANT
165 char _unused; // Shut GCC up
172 } Scope; // Used by NODETYPE_SCOPE and NODETYPE_ELEMENT
176 tAST_Node *LevelSizes;
177 tAST_Node *LevelSizes_Last;
178 tAST_Node *InitialValue;
187 // Used for NODETYPE_REAL, NODETYPE_INTEGER and NODETYPE_STRING
188 tSpiderValue Constant;
193 * \brief Code Block state (stores local variables)
195 struct sAST_BlockState
197 tAST_BlockState *Parent;
198 tSpiderScript *Script; //!< Script
199 tAST_Variable *FirstVar; //!< First variable in the list
200 tSpiderValue *RetVal;
201 tSpiderNamespace *BaseNamespace; //!< Base namespace (for entire block)
202 tSpiderNamespace *CurNamespace; //!< Currently selected namespace
203 int Ident; //!< ID number used for variable lookup caching
204 const char *BreakTarget;
211 int Type; // Only used for static typing
212 tSpiderValue *Object;
217 extern tAST_Script *AST_NewScript(void);
218 extern size_t AST_WriteScript(void *Buffer, tAST_Script *Script);
219 extern size_t AST_WriteNode(void *Buffer, size_t Offset, tAST_Node *Node);
221 extern tAST_Function *AST_AppendFunction(tAST_Script *Script, const char *Name, int ReturnType);
222 extern void AST_AppendFunctionArg(tAST_Function *Function, tAST_Node *Arg);
223 extern void AST_SetFunctionCode(tAST_Function *Function, tAST_Node *Root);
225 extern tAST_Node *AST_NewNop(tParser *Parser);
227 extern tAST_Node *AST_NewString(tParser *Parser, const char *String, int Length);
228 extern tAST_Node *AST_NewInteger(tParser *Parser, int64_t Value);
229 extern tAST_Node *AST_NewReal(tParser *Parser, double Value);
230 extern tAST_Node *AST_NewVariable(tParser *Parser, const char *Name);
231 extern tAST_Node *AST_NewDefineVar(tParser *Parser, int Type, const char *Name);
232 extern tAST_Node *AST_NewConstant(tParser *Parser, const char *Name);
233 extern tAST_Node *AST_NewClassElement(tParser *Parser, tAST_Node *Object, const char *Name);
235 extern tAST_Node *AST_NewFunctionCall(tParser *Parser, const char *Name);
236 extern tAST_Node *AST_NewCreateObject(tParser *Parser, const char *Name);
237 extern tAST_Node *AST_NewMethodCall(tParser *Parser, tAST_Node *Object, const char *Name);
238 extern void AST_AppendFunctionCallArg(tAST_Node *Node, tAST_Node *Arg);
240 extern tAST_Node *AST_NewCodeBlock(tParser *Parser);
241 extern void AST_AppendNode(tAST_Node *Parent, tAST_Node *Child);
243 extern tAST_Node *AST_NewIf(tParser *Parser, tAST_Node *Condition, tAST_Node *True, tAST_Node *False);
244 extern tAST_Node *AST_NewLoop(tParser *Parser, const char *Tag, tAST_Node *Init, int bPostCheck, tAST_Node *Condition, tAST_Node *Increment, tAST_Node *Code);
246 extern tAST_Node *AST_NewAssign(tParser *Parser, int Operation, tAST_Node *Dest, tAST_Node *Value);
247 extern tAST_Node *AST_NewCast(tParser *Parser, int Target, tAST_Node *Value);
248 extern tAST_Node *AST_NewBinOp(tParser *Parser, int Operation, tAST_Node *Left, tAST_Node *Right);
249 extern tAST_Node *AST_NewUniOp(tParser *Parser, int Operation, tAST_Node *Value);
250 extern tAST_Node *AST_NewBreakout(tParser *Parser, int Type, const char *DestTag);
251 extern tAST_Node *AST_NewScopeDereference(tParser *Parser, const char *Name, tAST_Node *Child);
253 extern void AST_FreeNode(tAST_Node *Node);
256 extern void Object_Dereference(tSpiderValue *Object);
257 extern void Object_Reference(tSpiderValue *Object);
258 extern tSpiderValue *AST_ExecuteNode(tAST_BlockState *Block, tAST_Node *Node);