70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
#pragma once
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#include <stdlib.h>
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struct stack;
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enum node_tag {
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NODE_APP,
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NODE_NUM,
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NODE_GLOBAL,
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NODE_IND,
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NODE_DATA
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};
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struct node_base {
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enum node_tag tag;
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};
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struct node_app {
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struct node_base base;
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struct node_base* left;
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struct node_base* right;
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};
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struct node_num {
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struct node_base base;
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int32_t value;
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};
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struct node_global {
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struct node_base base;
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int32_t arity;
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void (*function)(struct stack*);
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};
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struct node_ind {
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struct node_base base;
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struct node_base* next;
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};
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struct node_data {
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struct node_base base;
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int8_t tag;
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struct node_base** array;
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};
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struct node_base* alloc_node();
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struct node_app* alloc_app(struct node_base* l, struct node_base* r);
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struct node_num* alloc_num(int32_t n);
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struct node_global* alloc_global(void (*f)(struct stack*), int32_t a);
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struct node_ind* alloc_ind(struct node_base* n);
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struct stack {
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size_t size;
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size_t count;
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struct node_base** data;
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};
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void stack_free(struct stack* s);
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void stack_push(struct stack* s, struct node_base* n);
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struct node_base* stack_pop(struct stack* s);
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struct node_base* stack_peek(struct stack* s, size_t o);
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void stack_popn(struct stack* s, size_t n);
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void stack_slide(struct stack* s, size_t n);
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void stack_update(struct stack* s, size_t o);
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void stack_alloc(struct stack* s, size_t o);
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void stack_pack(struct stack* s, size_t n, int8_t t);
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void stack_split(struct stack* s, size_t n);
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struct node_base* eval(struct node_base* n);
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