92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
#ifndef OBJECT_H
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#define OBJECT_H
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#define MAX_TOK_LEN 4 // 11
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#define MAX_TOK_CNT 128 // 128
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#define MAX_ENV_ELM 15 // 50
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enum errorCode {
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BAD_LIST_OF_SYMBOL_STRINGS,
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TYPE_LIST_NOT_CAUGHT,
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NULL_ENV,
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BUILT_IN_NOT_FOUND,
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NULL_PARSE,
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NULL_LAMBDA_LIST,
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LAMBDA_ARGS_NOT_LIST,
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DID_NOT_FIND_SYMBOL,
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UNEXPECTED_FORM
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};
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#ifdef STANDALONE
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static const char *errorText[] = {
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"BAD_LIST_OF_SYMBOL_STRINGS",
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"TYPE_LIST_NOT_CAUGHT",
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"NULL_ENV",
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"BUILT_IN_NOT_FOUND",
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"NULL_PARSE",
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"NULL_LAMBDA_LIST",
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"LAMBDA_ARGS_NOT_LIST",
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"DID_NOT_FIND_SYMBOL",
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"UNEXPECTED_FORM"
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};
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#endif
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typedef enum Type {
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TYPE_NUMBER,
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TYPE_BOOL,
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TYPE_LIST,
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TYPE_FUNC,
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TYPE_SYMBOL,
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TYPE_LAMBDA,
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TYPE_ERROR // Currently unused
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} Type;
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typedef struct Object Object;
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struct Lambda;
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struct Object {
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Type type;
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Object *forward;
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union {
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int number;
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Object *list;
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char name[MAX_TOK_LEN];
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Object (*func)(Object, Object);
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struct Lambda *lambda; // Maybe better as not a pointer?
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enum errorCode err;
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};
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};
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// Maybe better as pointers?
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struct Lambda {
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Object params;
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Object body;
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};
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char* stringObj(char *dest, const Object *obj);
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void printList(const Object *list);
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void printObj(const Object *obj);
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void debugObj(const Object *obj);
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int isEmpty(const Object *obj);
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Object *tail(const Object *listObj);
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void addToList(Object *dest, Object src);
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void deleteList(const Object *dest);
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int listLength(const Object *listObj);
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Object *itemAt(const Object *listObj, int n);
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void copyList(Object *dest, const Object *src);
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void cleanObject(Object *target);
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void allocObject(Object **spot, const Object src);
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Object newObject(Type type);
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Object listObject();
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Object lambdaObject();
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Object symbolObject();
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Object boolObject(int b);
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Object numberObject(int num);
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Object errorObject(enum errorCode err);
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Object constructLambda(const Object *params, const Object *body);
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#endif
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