toy_scope.h

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#ifndef TOY_SCOPE_H_
#define TOY_SCOPE_H_
 
#include <stdbool.h>
 
#include "toy_literal.h"
#include "toy_literal_array.h"
#include "toy_literal_dictionary.h"
 
typedef struct Toy_Scope {
    Toy_LiteralDictionary variables; 
    Toy_LiteralDictionary types;     
    struct Toy_Scope *ancestor;      
    int references;                  
} Toy_Scope;
 
TOY_API Toy_Scope* Toy_pushScope(Toy_Scope *scope);
 
TOY_API Toy_Scope* Toy_popScope(Toy_Scope *scope);
 
TOY_API Toy_Scope* Toy_copyScope(Toy_Scope *original);
 
//returns false if error
TOY_API bool Toy_declareScopeVariable(Toy_Scope *scope, Toy_Literal key, Toy_Literal type);
 
TOY_API bool Toy_isDelcaredScopeVariable(Toy_Scope *scope, Toy_Literal key);
 
//return false if undefined
TOY_API bool Toy_setScopeVariable(Toy_Scope *scope, Toy_Literal key, Toy_Literal value, bool constCheck);
 
TOY_API bool Toy_getScopeVariable(Toy_Scope *scope, Toy_Literal key, Toy_Literal *value);
 
TOY_API Toy_Literal Toy_getScopeType(Toy_Scope *scope, Toy_Literal key);
 
#endif /* TOY_SCOPE_H_ */