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d_lang.h
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d_lang.h
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// 2024-11-11 i don't understand a single line now
// see demo/*.dt
// TODO: ... to access func args
// TODO: 'this'
// TODO: trait
// TODO: module
// TODO: threading
// TODO: utf8
// TODO: named func
// TODO: expose tokenizer
// TODO: standalone bytecode
// TODO: type
// TODO: string interpolation
// TODO: single ctx handle
// TODO: tail call opti
// TODO: loop return val
// TODO: switch
// TODO: str intern
// TODO: chained comparison
// TODO: iter with index
// TODO: separate debug print / actual print
// TODO: ordered map ?
// TODO: disallow shadowing global var
// TODO: member diconstructing
// TODO: combine GT/LT and EQ
// TODO: assignment in cond
// TODO: global on root scope?
// TODO: windows fs
// TODO: load dyn lib
// TODO: hot reload
// TODO: separate compiler and vm
// TODO: don't rely on emscripten
// TODO: cli arg for log
// TODO: try func table instead of switch
// TODO: require ! postfix for mut funcs
// TODO: pass global list to run()
// TODO: unpack arr / map in creations
#ifndef D_LANG_H
#define D_LANG_H
#define DT_STACK_MAX 2048
#define DT_ARR_INIT_SIZE 4
#define DT_MAP_INIT_SIZE 8
#define DT_MAP_MAX_LOAD 0.75
#define DT_GC_THRESHOLD 1024 * 1024
#define DT_GC_GROW 10
#define DT_PI 3.14
// #define DT_NO_NANBOX
// #define DT_VM_LOG
// #define DT_GC_LOG
// #define DT_GC_STRESS
#define DT_LIB_SYS
#define DT_LIB_DBG
#define DT_LIB_FS
#define DT_LIB_TERM
#define DT_LIB_HTTP
#if defined(__APPLE__)
#include <TargetConditionals.h>
#if TARGET_OS_OSX
#define DT_MACOS
#elif TARGET_OS_IOS
#define DT_IOS
#endif
#elif defined(__EMSCRIPTEN__)
#define DT_WEB
#elif defined(_WIN32) || defined(_WIN64)
#define DT_WINDOWS
#elif defined(__ANDROID__)
#define DT_ANDROID
#elif defined(__linux__) || defined(__unix__)
#define DT_LINUX
#endif
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <math.h>
#include <time.h>
#include <dirent.h>
#include <ctype.h>
#include <unistd.h>
#include <poll.h>
#include <sys/stat.h>
// value types
typedef enum {
DT_VAL_NIL,
DT_VAL_BOOL,
DT_VAL_NUM,
DT_VAL_STR,
DT_VAL_PSTR,
DT_VAL_ARR,
DT_VAL_MAP,
DT_VAL_RANGE,
DT_VAL_FUNC,
DT_VAL_STRUCT,
DT_VAL_BYTES,
DT_VAL_CFUNC,
DT_VAL_CDATA,
DT_VAL_CPTR,
// TODO
DT_VAL_UPVAL,
// TODO
DT_VAL_LOGIC,
} dt_val_ty;
#define DT_HEAPER_STRUCT \
struct dt_heaper *nxt; \
uint8_t type; \
bool marked;
typedef double dt_num;
typedef bool dt_bool;
struct dt_map;
struct dt_arr;
struct dt_str;
struct dt_vm;
struct dt_logic;
struct dt_func;
struct dt_upval;
struct dt_cdata;
// for easy loops and sub sections in lists
typedef struct {
int16_t start;
int16_t end;
} dt_range;
// packed string
typedef struct {
uint8_t len;
char chars[5];
} dt_pstr;
#ifdef DT_NO_NANBOX
struct dt_val;
typedef struct dt_val (dt_cfunc)(struct dt_vm* vm);
typedef struct dt_val {
dt_val_ty type;
union {
dt_num num;
dt_bool boolean;
dt_range range;
dt_pstr pstr;
struct dt_str* str;
struct dt_arr* arr;
struct dt_map* map;
struct dt_func* func;
struct dt_logic* logic;
dt_cfunc* cfunc;
struct dt_cdata* cdata;
struct dt_cptr* cptr;
struct dt_upval* upval;
} data;
} dt_val;
dt_val DT_NIL = (dt_val) {
.type = DT_VAL_NIL,
.data.num = 0,
};
dt_val DT_TRUE = (dt_val) {
.type = DT_VAL_BOOL,
.data.boolean = true,
};
dt_val DT_FALSE = (dt_val) {
.type = DT_VAL_BOOL,
.data.boolean = false,
};
#else
typedef uint64_t dt_val;
// IEEE 754 "double" bit segments
#define DT_SMASK_SIGN 0x8000000000000000
#define DT_SMASK_EXPO 0x7ff0000000000000
#define DT_SMASK_QUIET 0x0008000000000000
#define DT_SMASK_SIG 0xffff000000000000
#define DT_SMASK_PTR 0x0000ffffffffffff
#define DT_SMASK_RANGE 0x00000000ffffffff
#define DT_SMASK_PSTR 0x0000ffffffffffff
// TODO: don't use 2 tmask for bool
// value type
#define DT_TMASK_NAN 0x0000000000000000
#define DT_TMASK_FALSE 0x0001000000000000
#define DT_TMASK_TRUE 0x0002000000000000
#define DT_TMASK_NIL 0x0003000000000000
#define DT_TMASK_RANGE 0x0004000000000000
#define DT_TMASK_PSTR 0x0005000000000000
#define DT_TMASK_HEAP 0x0006000000000000
#define DT_TMASK_STRUCT 0x0007000000000000
#define DT_TMASK_CFUNC 0x8000000000000000
#define DT_TMASK_CDATA 0x8001000000000000
#define DT_TMASK_CPTR 0x8002000000000000
#define DT_TMASK_LOGIC 0x8007000000000000
// value constants
#define DT_NAN (DT_SMASK_EXPO | DT_SMASK_QUIET)
#define DT_FALSE (DT_NAN | DT_TMASK_FALSE)
#define DT_TRUE (DT_NAN | DT_TMASK_TRUE)
#define DT_NIL (DT_NAN | DT_TMASK_NIL)
// value type signature
#define DT_SIG_NAN DT_NAN
#define DT_SIG_FALSE DT_FALSE
#define DT_SIG_TRUE DT_TRUE
#define DT_SIG_NIL DT_NIL
#define DT_SIG_RANGE (DT_NAN | DT_TMASK_RANGE)
#define DT_SIG_PSTR (DT_NAN | DT_TMASK_PSTR)
#define DT_SIG_HEAP (DT_NAN | DT_TMASK_HEAP)
#define DT_SIG_LOGIC (DT_NAN | DT_TMASK_LOGIC)
#define DT_SIG_CFUNC (DT_NAN | DT_TMASK_CFUNC)
#define DT_SIG_CDATA (DT_NAN | DT_TMASK_CDATA)
#define DT_SIG_CPTR (DT_NAN | DT_TMASK_CPTR)
typedef dt_val (dt_cfunc)(struct dt_vm* vm);
#endif
// Arr<Map<Num>>
// type = DT_VAL_ARR
// idx = 0
// nargs = 1
// TODO
typedef struct dt_type {
dt_val_ty type;
// struct / func idx in compiler
uint16_t idx;
} dt_type;
// struct node {
// bool has_child;
// union {
// struct node child;
// char empty;
// } data;
// };
dt_type DT_TYPE_NIL = (dt_type) {
.type = DT_VAL_NIL,
};
dt_type DT_TYPE_BOOL = (dt_type) {
.type = DT_VAL_BOOL,
};
dt_type DT_TYPE_RANGE = (dt_type) {
.type = DT_VAL_RANGE,
};
dt_type DT_TYPE_STR = (dt_type) {
.type = DT_VAL_STR,
};
dt_type DT_TYPE_NUM = (dt_type) {
.type = DT_VAL_NUM,
};
typedef struct {
dt_type type;
} dt_arr_def;
typedef struct {
dt_type type;
} dt_map_def;
// TODO
typedef struct {
char name[16];
int type;
} dt_struct_mem;
typedef struct {
char name[16];
char mem_names[16][16];
dt_type mems[16];
int num_mems;
} dt_struct_def;
// TODO
typedef struct {
char name[16];
dt_type ret;
dt_type args[8];
int num_args;
} dt_func_def;
typedef struct dt_heaper {
DT_HEAPER_STRUCT
} dt_heaper;
typedef struct dt_cdata {
DT_HEAPER_STRUCT
uint32_t size;
uint8_t data[];
} dt_cdata;
// upvalue (runtime)
// - captured: already allocated to the heap
// - not captured: points to a stack slot, must lift when it gets popped
typedef struct dt_upval {
DT_HEAPER_STRUCT
bool captured;
dt_val* val;
} dt_upval;
// string
typedef struct dt_str {
DT_HEAPER_STRUCT
uint32_t len;
uint32_t hash;
char chars[];
} dt_str;
// array
typedef struct dt_arr {
DT_HEAPER_STRUCT
uint32_t len;
uint32_t cap;
dt_val* values;
} dt_arr;
// hashmap entry
typedef struct {
dt_str* key;
dt_val val;
} dt_map_entry;
// hashmap
typedef struct dt_map {
DT_HEAPER_STRUCT
uint32_t cnt;
uint32_t cap;
dt_map_entry* entries;
} dt_map;
typedef struct {
dt_map* map;
uint32_t idx;
} dt_map_iter;
// TODO: store dt_logics on top level instead of consts
// holding bytecodes and constants
typedef struct {
int cnt;
int cap;
uint8_t* code;
int* lines;
dt_arr* consts;
} dt_chunk;
// function prototype
typedef struct dt_logic {
DT_HEAPER_STRUCT
dt_chunk chunk;
uint16_t nargs;
char* name;
} dt_logic;
// function
typedef struct dt_func {
DT_HEAPER_STRUCT
uint8_t num_upvals;
dt_logic* logic;
dt_upval** upvals;
} dt_func;
typedef struct {
int line;
char* msg;
} dt_err;
// the runtime virtual machine
typedef struct dt_vm {
dt_func* func;
uint8_t* ip;
dt_val stack[DT_STACK_MAX];
dt_val* stack_top;
dt_val* stack_bot;
dt_map* globals;
dt_map* libs;
dt_map* strs;
dt_arr* holds;
dt_upval* open_upvals[UINT8_MAX];
int num_upvals;
dt_heaper* heaper;
size_t mem;
size_t gc_next;
dt_func* trying;
bool throwing;
dt_err err;
} dt_vm;
typedef struct {
char* name;
dt_val val;
} dt_reg;
// op codes
typedef enum {
DT_OP_STOP,
DT_OP_THROW,
DT_OP_CONST,
DT_OP_NIL,
DT_OP_TRUE,
DT_OP_FALSE,
DT_OP_ADD,
DT_OP_SUB,
DT_OP_MUL,
DT_OP_DIV,
DT_OP_NEG,
DT_OP_NOT,
DT_OP_EQ,
DT_OP_GT,
DT_OP_GT_EQ,
DT_OP_LT,
DT_OP_LT_EQ,
DT_OP_OR,
DT_OP_NIL_OR,
DT_OP_AND,
DT_OP_LEN,
DT_OP_POP,
DT_OP_GETG,
DT_OP_SETG,
DT_OP_GETL,
DT_OP_SETL,
DT_OP_GETU,
DT_OP_SETU,
DT_OP_GETI,
DT_OP_SETI,
DT_OP_CALL,
DT_OP_TRY_PREP,
DT_OP_TRY,
DT_OP_MKFUNC,
DT_OP_MKARR,
DT_OP_MKMAP,
DT_OP_JMP,
DT_OP_JMP_COND,
DT_OP_REWIND,
DT_OP_CLOSE,
DT_OP_SPREAD,
DT_OP_ITER_PREP,
DT_OP_ITER,
DT_OP_ARGS,
DT_OP_UNPACK,
} dt_op;
// tokens
typedef enum {
// sym
DT_TOKEN_LPAREN, // (
DT_TOKEN_RPAREN, // )
DT_TOKEN_LBRACE, // {
DT_TOKEN_RBRACE, // }
DT_TOKEN_LBRACKET, // [
DT_TOKEN_RBRACKET, // ]
DT_TOKEN_COMMA, // ,
DT_TOKEN_DOT, // .
DT_TOKEN_PLUS, // +
DT_TOKEN_MINUS, // -
DT_TOKEN_STAR, // *
DT_TOKEN_SLASH, // /
DT_TOKEN_CARET, // ^
DT_TOKEN_GT, // >
DT_TOKEN_GT_GT, // >>
DT_TOKEN_LT, // <
DT_TOKEN_LT_LT, // <<
DT_TOKEN_EQ, // =
DT_TOKEN_BANG, // !
DT_TOKEN_HASH, // #
DT_TOKEN_DOLLAR, // $
DT_TOKEN_DOLLAR_LBRACE, // ${
DT_TOKEN_BACKSLASH, //
DT_TOKEN_PERCENT, // %
DT_TOKEN_TILDE, // ~
DT_TOKEN_COLON, // :
DT_TOKEN_COLON_COLON, // ::
DT_TOKEN_COLON_D, // :D
DT_TOKEN_COLON_LPAREN, // :(
DT_TOKEN_COLON_RPAREN, // :)
DT_TOKEN_QUESTION, // ?
DT_TOKEN_QUESTION_Q, // ??
DT_TOKEN_AND, // &
DT_TOKEN_OR, // |
DT_TOKEN_AT, // @
DT_TOKEN_EQ_EQ, // ==
DT_TOKEN_BANG_EQ, // !=
DT_TOKEN_PLUS_EQ, // +=
DT_TOKEN_PLUS_PLUS, // ++
DT_TOKEN_MINUS_EQ, // -=
DT_TOKEN_MINUS_MINUS, // --
DT_TOKEN_STAR_EQ, // *=
DT_TOKEN_SLASH_EQ, // /=
DT_TOKEN_LT_EQ, // <=
DT_TOKEN_GT_EQ, // >=
DT_TOKEN_DOT_DOT, // ..
DT_TOKEN_DOT_DOT_DOT, // ...
DT_TOKEN_AND_AND, // &&
DT_TOKEN_OR_OR, // ||
DT_TOKEN_TILDE_GT, // ~>
DT_TOKEN_AT_GT, // @>
DT_TOKEN_AT_CARET, // @^
DT_TOKEN_PERCENT_GT, // %>
DT_TOKEN_QUOTE, // "
// lit
DT_TOKEN_IDENT,
DT_TOKEN_STR,
DT_TOKEN_NUM,
// key
DT_TOKEN_N,
DT_TOKEN_T,
DT_TOKEN_F,
// util
DT_TOKEN_ERR,
DT_TOKEN_END,
} dt_token_ty;
typedef enum {
DT_PREC_NONE,
DT_PREC_ASSIGN, // =
DT_PREC_LOGIC, // || &&
DT_PREC_EQ, // == !=
DT_PREC_CMP, // < > <= >=
DT_PREC_TERM, // + -
DT_PREC_FACTOR, // * /
DT_PREC_UNARY, // ! - #
DT_PREC_CALL, // () [] .
DT_PREC_PRIMARY
} dt_prec;
typedef struct {
char* start;
int len;
} dt_fstr;
typedef struct {
dt_token_ty type;
int line;
dt_fstr str;
} dt_token;
typedef struct {
dt_token prev;
dt_token cur;
} dt_parser;
typedef struct {
char* start;
char* cur;
int line;
} dt_scanner;
// compile time local variable representation
// TODO: store type
typedef struct {
dt_fstr name;
bool captured;
int depth;
dt_type type;
} dt_c_local;
// compile time upval representation
typedef struct {
int idx;
bool local;
} dt_c_upval;
// block types
typedef enum {
DT_BLOCK_NORMAL,
DT_BLOCK_LOOP,
DT_BLOCK_COND,
} dt_block_ty;
// compile time loop break point bookkeeping
typedef struct {
int pos;
int depth;
bool cont;
} dt_break;
// compile time function representation
// TODO: compact
typedef struct dt_funcenv {
struct dt_funcenv* parent;
dt_chunk chunk;
int cur_depth;
dt_block_ty scopes[UINT8_MAX];
dt_c_local locals[UINT8_MAX];
int num_locals;
dt_c_upval upvals[UINT8_MAX];
int num_upvals;
dt_break breaks[UINT8_MAX];
int num_breaks;
bool currying;
} dt_funcenv;
typedef struct {
dt_scanner scanner;
dt_parser parser;
dt_funcenv base_env;
dt_funcenv* env;
} dt_compiler;
typedef dt_type (*dt_parse_fn)(dt_compiler* compiler);
typedef dt_type (*dt_parse_fn2)(dt_compiler* compiler, dt_type prev_ty);
typedef struct {
dt_parse_fn prefix;
dt_parse_fn2 infix;
dt_prec prec;
} dt_parse_rule;
// vm creation / destruction
dt_vm dt_vm_new (void);
void dt_vm_free (dt_vm* vm);
// running code
dt_val dt_run (dt_vm* vm, char* code, dt_map* lib);
dt_val dt_runfile (dt_vm* vm, char* path, dt_map* lib);
dt_val dt_load (dt_vm* vm, char* src);
dt_val dt_loadfile (dt_vm* vm, char* path);
// throw runtime error
void dt_throw (dt_vm* vm, char* fmt, ...);
// for getting args in cfunc
int dt_nargs (dt_vm* vm);
bool dt_arg_exists (dt_vm* vm, int idx);
dt_val dt_arg (dt_vm* vm, int idx);
dt_val dt_arg_or (dt_vm* vm, int idx, dt_val v);
dt_num dt_arg_num (dt_vm* vm, int idx);
dt_num dt_arg_num_or (dt_vm* vm, int idx, dt_num n);
dt_bool dt_arg_bool (dt_vm* vm, int idx);
dt_bool dt_arg_bool_or (dt_vm* vm, int idx, dt_bool b);
dt_str* dt_arg_str (dt_vm* vm, int idx);
dt_str* dt_arg_str_or (dt_vm* vm, int idx, dt_str* str);
char* dt_arg_cstr (dt_vm* vm, int idx);
char* dt_arg_cstr_dup (dt_vm* vm, int idx);
char* dt_arg_cstr_or (dt_vm* vm, int idx, char* str);
char* dt_arg_cstr_or_dup (dt_vm* vm, int idx, char* str);
dt_map* dt_arg_map (dt_vm* vm, int idx);
dt_arr* dt_arg_arr (dt_vm* vm, int idx);
dt_func* dt_arg_func (dt_vm* vm, int idx);
bool dt_check_args (dt_vm* vm, int nargs, ...);
// calling a dt_func
dt_val dt_call (dt_vm* vm, dt_val func, int nargs, ...);
// value conversions
dt_val dt_to_num (dt_num n);
dt_val dt_to_bool (dt_bool b);
dt_val dt_to_range (dt_range r);
dt_val dt_to_str (dt_str* str);
dt_val dt_to_arr (dt_arr* arr);
dt_val dt_to_map (dt_map* map);
dt_val dt_to_func (dt_func* func);
dt_val dt_to_cfunc (dt_cfunc* func);
dt_num dt_as_num (dt_vm* vm, dt_val v);
dt_num dt_as_num_or (dt_vm* vm, dt_val v, dt_num n);
dt_bool dt_as_bool (dt_vm* vm, dt_val v);
dt_bool dt_as_bool_or (dt_vm* vm, dt_val v, dt_bool b);
dt_range dt_as_range (dt_vm* vm, dt_val v);
dt_str* dt_as_str (dt_vm* vm, dt_val v);
dt_str* dt_as_str_or (dt_vm* vm, dt_val v, dt_str* s);
dt_arr* dt_as_arr (dt_vm* vm, dt_val v);
dt_arr* dt_as_arr_or (dt_vm* vm, dt_val v, dt_arr* s);
dt_map* dt_as_map (dt_vm* vm, dt_val v);
dt_map* dt_as_map_or (dt_vm* vm, dt_val v, dt_map* s);
dt_func* dt_as_func (dt_vm* vm, dt_val v);
dt_cfunc* dt_as_cfunc (dt_vm* vm, dt_val v);
dt_num dt_as_num2 (dt_val v);
dt_bool dt_as_bool2 (dt_val v);
dt_range dt_as_range2 (dt_val v);
dt_str* dt_as_str2 (dt_val v);
dt_arr* dt_as_arr2 (dt_val v);
dt_map* dt_as_map2 (dt_val v);
dt_func* dt_as_func2 (dt_val v);
dt_cfunc* dt_as_cfunc2 (dt_val v);
// type checking
dt_val_ty dt_typeof (dt_val v);
char* dt_typename (dt_val_ty ty);
bool dt_is_nil (dt_val v);
bool dt_is_num (dt_val v);
bool dt_is_bool (dt_val v);
bool dt_is_str (dt_val v);
bool dt_is_map (dt_val v);
bool dt_is_arr (dt_val v);
bool dt_is_func (dt_val v);
bool dt_is_cfunc (dt_val v);
bool dt_typecheck (dt_vm* vm, dt_val v, dt_val_ty ty);
bool dt_typecheck_opt (dt_vm* vm, dt_val v, dt_val_ty ty);
// misc value related
bool dt_val_eq (dt_val a, dt_val b);
bool dt_val_lt (dt_val a, dt_val b);
dt_val dt_val_clone (dt_vm* vm, dt_val v);
bool dt_val_truthy (dt_val v);
void dt_val_print (dt_val v);
void dt_val_println (dt_val v);
// allocate empty str with len (need to manually fill and hash afterwards or the
// content is undefined)
dt_str* dt_str_alloc (dt_vm* vm, int len);
dt_str* dt_str_fmt (dt_vm* vm, char* fmt, ...);
// create str from c str (until '\0')
dt_str* dt_str_new (dt_vm* vm, char* src);
// create str from c str with length
dt_str* dt_str_new_len (dt_vm* vm, char* src, int len);
// free (you shouldn't call this manually if it's managed by gc)
void dt_str_free (dt_vm* vm, dt_str* str);
// generate str hash
void dt_str_hash (dt_str* str);
// create c str (needs manual memory management)
char* dt_str_cstr (dt_str* str);
bool dt_str_eq (dt_str* a, dt_str* b);
dt_str* dt_str_concat (dt_vm* vm, dt_str* a, dt_str* b);
dt_str* dt_str_replace (dt_vm* vm, dt_str* src, dt_str* from, dt_str* to);
dt_arr* dt_str_chars (dt_vm* vm, dt_str* src);
dt_arr* dt_str_split (dt_vm* vm, dt_str* str, dt_str* sep);
dt_str* dt_str_rep (dt_vm* vm, dt_str* str, int times);
dt_str* dt_str_toupper (dt_vm* vm, dt_str* str);
dt_str* dt_str_tolower (dt_vm* vm, dt_str* str);
int dt_str_find (dt_str* str, dt_str* key);
int dt_str_find_at (dt_str* str, dt_str* key, int idx);
bool dt_str_contains (dt_str* str, dt_str* key);
dt_str* dt_str_rev (dt_vm* vm, dt_str* str);
dt_map* dt_str_match (dt_vm* vm, dt_str* str, dt_str* pat);
dt_str* dt_str_trim (dt_vm* vm, dt_str* str);
dt_str* dt_str_trunc (dt_vm* vm, dt_str* str, int len, dt_str* rest);
dt_str* dt_str_sub (dt_vm* vm, dt_str* str, int a, int b);
dt_str* dt_str_get (dt_vm* vm, dt_str* str, int idx);
int dt_str_cmp (dt_str* a, dt_str* b);
dt_str* dt_str_ser (dt_vm* vm, dt_str* str);
void dt_str_print (dt_str* str);
void dt_str_println (dt_str* str);
// create empty array
dt_arr* dt_arr_new (dt_vm* vm);
// create array with capacity
dt_arr* dt_arr_new_len (dt_vm* vm, int len);
void dt_arr_free (dt_vm* vm, dt_arr* arr);
void dt_arr_free_rec (dt_vm* vm, dt_arr* arr);
dt_val dt_arr_get (dt_arr* arr, int idx);
void dt_arr_set (dt_vm* vm, dt_arr* arr, int idx, dt_val val);
void dt_arr_insert (dt_vm* vm, dt_arr* arr, int idx, dt_val val);
void dt_arr_push (dt_vm* vm, dt_arr* arr, dt_val val);
dt_val dt_arr_rm (dt_arr* arr, int idx);
void dt_arr_rm_all (dt_arr* arr, dt_val v);
int dt_arr_find (dt_arr* arr, dt_val v);
dt_arr* dt_arr_map (dt_vm* vm, dt_arr* arr, dt_val f);
dt_arr* dt_arr_sort (dt_vm* vm, dt_arr* arr, dt_val f);
dt_arr* dt_arr_filter (dt_vm* vm, dt_arr* arr, dt_val f);
void dt_arr_each (dt_vm* vm, dt_arr* arr, dt_val f);
dt_val dt_arr_reduce (dt_vm* vm, dt_arr* arr, dt_val init, dt_val f);
bool dt_arr_contains (dt_arr* arr, dt_val v);
dt_str* dt_arr_join (dt_vm* vm, dt_arr* arr, dt_str* s);
dt_arr* dt_arr_dedup (dt_vm* vm, dt_arr* arr);
dt_arr* dt_arr_rev (dt_vm* vm, dt_arr* arr);
dt_val dt_arr_pop (dt_arr* arr);
dt_val dt_arr_pop (dt_arr* arr);
dt_arr* dt_arr_sub (dt_vm* vm, dt_arr* arr, int start, int end);
dt_arr* dt_arr_concat (dt_vm* vm, dt_arr* a1, dt_arr* a2);
dt_val dt_arr_rand (dt_arr* arr);
dt_arr* dt_arr_clone (dt_vm* vm, dt_arr* src);
bool dt_arr_eq (dt_arr* a1, dt_arr* a2);
dt_str* dt_arr_ser (dt_vm* vm, dt_arr* arr);
void dt_arr_print (dt_arr* arr);
void dt_arr_println (dt_arr* arr);
// create empty hashmap
dt_map* dt_map_new (dt_vm* vm);
// create hashmap with capacity
dt_map* dt_map_new_len (dt_vm* vm, int len);
dt_map* dt_map_new_reg (dt_vm* vm, dt_reg* table);
void dt_map_free (dt_vm* vm, dt_map* map);
void dt_map_free_rec (dt_vm* vm, dt_map* map);
dt_val dt_map_get (dt_map* map, dt_str* key);
void dt_map_set (dt_vm* vm, dt_map* map, dt_str* key, dt_val val);
void dt_map_each (dt_vm* vm, dt_map* map, dt_val f);
// get / set from c str
dt_val dt_map_cget (dt_vm* vm, dt_map* map, char* key);
void dt_map_cset (dt_vm* vm, dt_map* map, char* key, dt_val val);
void dt_map_reg (dt_vm* vm, dt_map* map, dt_reg* table);
bool dt_map_has (dt_map* map, dt_str* key);
bool dt_map_chas (dt_vm* vm, dt_map* map, char* key);
dt_val dt_map_rm (dt_map* map, dt_str* key);
// get an array of keys
dt_arr* dt_map_keys (dt_vm* vm, dt_map* map);
// get an array of values
dt_arr* dt_map_vals (dt_vm* vm, dt_map* map);
dt_map* dt_map_clone (dt_vm* vm, dt_map* src);
bool dt_map_eq (dt_map* a1, dt_map* a2);
dt_str* dt_map_ser (dt_vm* vm, dt_map* map);
void dt_map_print (dt_map* map);
void dt_map_println (dt_map* map);
dt_map_iter dt_map_iter_new (dt_map* map);
dt_map_entry* dt_map_iter_nxt (dt_map_iter* iter);
dt_cdata* dt_cdata_new (dt_vm* vm, void* data, size_t size);
void dt_cdata_free (dt_vm* vm, dt_cdata* cdata);
#endif
#ifdef D_IMPL
#define D_LANG_IMPL
#endif
#ifdef D_LANG_IMPL
#ifndef D_LANG_IMPL_ONCE
#define D_LANG_IMPL_ONCE
// unrecoverable error
void dt_fail(char* fmt, ...) {
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
exit(EXIT_FAILURE);
}
// mem ops with total mem bookkeeping
void* dt_malloc(dt_vm* vm, size_t size) {
if (vm) {
vm->mem += size;
}
return malloc(size);
}
void* dt_realloc(dt_vm* vm, void* ptr, size_t old_size, size_t new_size) {
if (vm) {
vm->mem = vm->mem - old_size + new_size;
}
return realloc(ptr, new_size);
}
void dt_free(dt_vm* vm, void* ptr, size_t size) {
if (vm) {
vm->mem -= size;
}
free(ptr);
}
char* dt_token_name(dt_token_ty ty) {
switch (ty) {
case DT_TOKEN_LPAREN: return "LPAREN";
case DT_TOKEN_RPAREN: return "RPAREN";
case DT_TOKEN_LBRACE: return "LBRACE";
case DT_TOKEN_RBRACE: return "RBRACE";
case DT_TOKEN_LBRACKET: return "LBRACKET";
case DT_TOKEN_RBRACKET: return "RBRACKET";
case DT_TOKEN_COMMA: return "COMMA";
case DT_TOKEN_DOT: return "DOT";
case DT_TOKEN_PLUS: return "PLUS";
case DT_TOKEN_MINUS: return "MINUS";
case DT_TOKEN_STAR: return "STAR";
case DT_TOKEN_SLASH: return "SLASH";
case DT_TOKEN_CARET: return "CARET";
case DT_TOKEN_GT: return "GT";
case DT_TOKEN_GT_GT: return "GT_GT";
case DT_TOKEN_LT: return "LT";
case DT_TOKEN_LT_LT: return "LT_LT";
case DT_TOKEN_EQ: return "EQ";
case DT_TOKEN_BANG: return "BANG";
case DT_TOKEN_HASH: return "HASH";
case DT_TOKEN_DOLLAR: return "DOLLAR";
case DT_TOKEN_DOLLAR_LBRACE: return "DOLLAR_LBRACE";
case DT_TOKEN_BACKSLASH: return "BACKSLASH";
case DT_TOKEN_PERCENT: return "PERCENT";
case DT_TOKEN_TILDE: return "TILDE";
case DT_TOKEN_COLON: return "COLON";
case DT_TOKEN_COLON_COLON: return "COLON_COLON";
case DT_TOKEN_COLON_D: return "COLON_D";
case DT_TOKEN_COLON_LPAREN: return "COLON_LPAREN";
case DT_TOKEN_COLON_RPAREN: return "COLON_RPAREN";
case DT_TOKEN_QUESTION: return "QUESTION";
case DT_TOKEN_QUESTION_Q: return "QUESTION_QUESTION";
case DT_TOKEN_QUOTE: return "QUOTE";
case DT_TOKEN_AND: return "AND";
case DT_TOKEN_OR: return "OR";
case DT_TOKEN_AT: return "AT";
case DT_TOKEN_EQ_EQ: return "EQ_EQ";
case DT_TOKEN_BANG_EQ: return "BANG_EQ";
case DT_TOKEN_PLUS_EQ: return "PLUS_EQ";
case DT_TOKEN_PLUS_PLUS: return "PLUS_PLUS";
case DT_TOKEN_MINUS_EQ: return "MINUS_EQ";
case DT_TOKEN_MINUS_MINUS: return "MINUS_MINUS";
case DT_TOKEN_STAR_EQ: return "STAR_EQ";
case DT_TOKEN_SLASH_EQ: return "SLASH_EQ";
case DT_TOKEN_LT_EQ: return "LESS_EQ";
case DT_TOKEN_GT_EQ: return "GT_EQ";
case DT_TOKEN_DOT_DOT: return "DOT_DOT";
case DT_TOKEN_DOT_DOT_DOT: return "DOT_DOT_DOT";
case DT_TOKEN_AND_AND: return "AND_AND";
case DT_TOKEN_OR_OR: return "OR_OR";
case DT_TOKEN_TILDE_GT: return "TILDE_GT";
case DT_TOKEN_AT_GT: return "AT_GT";
case DT_TOKEN_AT_CARET: return "AT_CARET";
case DT_TOKEN_PERCENT_GT: return "PERCENT_GT";
case DT_TOKEN_IDENT: return "IDENT";
case DT_TOKEN_STR: return "STR";
case DT_TOKEN_NUM: return "NUM";
case DT_TOKEN_N: return "N";
case DT_TOKEN_T: return "T";
case DT_TOKEN_F: return "F";
case DT_TOKEN_ERR: return "ERR";
case DT_TOKEN_END: return "END";
}
}
bool dt_token_eq(dt_token* t1, dt_token* t2) {
if (t1->str.len != t2->str.len) {
return false;
}
return memcmp(t1->str.start, t2->str.start, t1->str.len) == 0;
}
dt_val_ty dt_typeof(dt_val v) {
#ifdef DT_NO_NANBOX
return v.type;
#else
if ((~v & DT_SMASK_EXPO) != 0) {
return DT_VAL_NUM;
}
switch (v & DT_SMASK_SIG) {
case DT_SIG_NAN: return DT_VAL_NUM;
case DT_SIG_FALSE:
case DT_SIG_TRUE: return DT_VAL_BOOL;
case DT_SIG_NIL: return DT_VAL_NIL;
case DT_SIG_RANGE: return DT_VAL_RANGE;
case DT_SIG_PSTR: return DT_VAL_PSTR;
case DT_SIG_LOGIC: return DT_VAL_LOGIC;
case DT_SIG_CFUNC: return DT_VAL_CFUNC;
case DT_SIG_HEAP: return ((dt_heaper*)(v & DT_SMASK_PTR))->type;
}
return DT_VAL_NIL;
#endif
}
bool dt_typecheck(dt_vm* vm, dt_val v, dt_val_ty expected) {
dt_val_ty actual = dt_typeof(v);
if (actual != expected) {
dt_throw(
vm,
"expected a '%s', found '%s'",
dt_typename(expected),
dt_typename(actual)
);
return false;
}
return true;
}
bool dt_typecheck_opt(dt_vm* vm, dt_val v, dt_val_ty expected) {
dt_val_ty actual = dt_typeof(v);
if (actual != expected && actual != DT_VAL_NIL) {
dt_throw(
vm,
"expected a '%s', found '%s'",
dt_typename(expected),
dt_typename(actual)
);
return false;
}
return true;
}
char* dt_typename(dt_val_ty ty) {
switch (ty) {
case DT_VAL_NIL: return "nil";
case DT_VAL_BOOL: return "bool";
case DT_VAL_NUM: return "num";
case DT_VAL_STR: return "str";
case DT_VAL_PSTR: return "str";
case DT_VAL_ARR: return "arr";
case DT_VAL_MAP: return "map";
case DT_VAL_RANGE: return "range";
case DT_VAL_STRUCT: return "struct";
case DT_VAL_FUNC: return "func";