Aryadev Chavali
6dfe3e72a1
I think we fall into a few traps if we return an sv_t directly. Think intent is clearer by returning the c-string directly.
84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
/* Copyright (C) 2025 Aryadev Chavali
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the Unlicense for details.
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* You may distribute and modify this code under the terms of the Unlicense,
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* which you should have received a copy of along with this program. If not,
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* please go to <https://unlicense.org/>.
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* Created: 2025-08-19
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* Description: All the definitions required for the lisp system
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*/
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#ifndef BASE_H
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#define BASE_H
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#include <stdint.h>
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/// The bare fucking minimum
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#define MAX(A, B) ((A) > (B) ? (A) : (B))
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#define MIN(A, B) ((A) < (B) ? (A) : (B))
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#define ARRSIZE(A) (sizeof(A) / sizeof((A)[0]))
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typedef uint8_t u8;
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typedef uint16_t u16;
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typedef uint32_t u32;
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typedef uint64_t u64;
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typedef int8_t i8;
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typedef int16_t i16;
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typedef int32_t i32;
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typedef int64_t i64;
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/// String Views for my String Needs
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typedef struct
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{
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u64 size;
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char *data;
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} sv_t;
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#define SV(DATA, SIZE) ((sv_t){.data = (DATA), .size = (SIZE)})
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#define SV_FMT(SV) (int)(SV).size, (SV).data
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#define PR_SV "%.*s"
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sv_t sv_copy(sv_t old);
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/// Dynamic arrays
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typedef struct
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{
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u64 size, capacity;
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u8 bytes[];
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} vec_t;
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#define VEC_GET(P) (((vec_t *)(P)) - 1)
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#define VEC_SIZE(P) (VEC_GET(P)->size)
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#define VEC_CAP(P) (VEC_GET(P)->capacity)
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#define VEC_MULT 2
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void vec_make(void **ptr, u64 size);
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void vec_free(void **data);
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void vec_ensure_remaining(void **ptr, u64 space);
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void vec_append_byte(void **ptr, u8 byte);
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void vec_append(void **ptr, void *data, u64 size);
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void vec_clone(void **dest, void **src);
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/// Symbol table
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typedef struct
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{
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u64 count; // How many strings?
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u64 capacity; // How many entry buckets?
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sv_t *entries; // this is actually a vector on the inside lol
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} sym_table_t;
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#define SYM_TABLE_INIT_SIZE 1024
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u64 djb2(sv_t string);
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void sym_table_init(sym_table_t *table);
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char *sym_table_find(sym_table_t *table, sv_t sv);
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void sym_table_cleanup(sym_table_t *table);
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#endif
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