ref: b9e14e53a090337d08dea3d536325aa3daff1b38
dir: /jsarray.c/
#include "jsi.h" #include "jsvalue.h" #include "jsbuiltin.h" int js_getlength(js_State *J, int idx) { int len; js_getproperty(J, idx, "length"); len = js_tointeger(J, -1); js_pop(J, 1); return len; } void js_setlength(js_State *J, int idx, int len) { js_pushnumber(J, len); js_setproperty(J, idx < 0 ? idx - 1 : idx, "length"); } int js_hasindex(js_State *J, int idx, int i) { char buf[32]; return js_hasproperty(J, idx, js_itoa(buf, i)); } void js_getindex(js_State *J, int idx, int i) { char buf[32]; js_getproperty(J, idx, js_itoa(buf, i)); } void js_setindex(js_State *J, int idx, int i) { char buf[32]; js_setproperty(J, idx, js_itoa(buf, i)); } void js_delindex(js_State *J, int idx, int i) { char buf[32]; js_delproperty(J, idx, js_itoa(buf, i)); } static void jsB_new_Array(js_State *J) { int i, top = js_gettop(J); js_newarray(J); if (top == 2) { if (js_isnumber(J, 1)) { js_copy(J, 1); js_setproperty(J, -2, "length"); } else { js_copy(J, 1); js_setindex(J, -2, 0); } } else { for (i = 1; i < top; ++i) { js_copy(J, i); js_setindex(J, -2, i - 1); } } } static void Ap_concat(js_State *J) { int i, top = js_gettop(J); int n, k, len; js_newarray(J); n = 0; for (i = 0; i < top; ++i) { js_copy(J, i); if (js_isarray(J, -1)) { len = js_getlength(J, -1); for (k = 0; k < len; ++k) if (js_hasindex(J, -1, k)) js_setindex(J, -3, n++); js_pop(J, 1); } else { js_setindex(J, -2, n++); } } } static void Ap_join(js_State *J) { char * volatile out = NULL; const char *sep; const char *r; int seplen; int k, n, len; len = js_getlength(J, 0); if (js_isdefined(J, 1)) { sep = js_tostring(J, 1); seplen = strlen(sep); } else { sep = ","; seplen = 1; } if (len == 0) { js_pushliteral(J, ""); return; } if (js_try(J)) { js_free(J, out); js_throw(J); } n = 1; for (k = 0; k < len; ++k) { js_getindex(J, 0, k); if (js_isundefined(J, -1) || js_isnull(J, -1)) r = ""; else r = js_tostring(J, -1); n += strlen(r); if (k == 0) { out = js_malloc(J, n); strcpy(out, r); } else { n += seplen; out = js_realloc(J, out, n); strcat(out, sep); strcat(out, r); } js_pop(J, 1); } js_pushstring(J, out); js_endtry(J); js_free(J, out); } static void Ap_pop(js_State *J) { int n; n = js_getlength(J, 0); if (n > 0) { js_getindex(J, 0, n - 1); js_delindex(J, 0, n - 1); js_setlength(J, 0, n - 1); } else { js_setlength(J, 0, 0); js_pushundefined(J); } } static void Ap_push(js_State *J) { int i, top = js_gettop(J); int n; n = js_getlength(J, 0); for (i = 1; i < top; ++i, ++n) { js_copy(J, i); js_setindex(J, 0, n); } js_setlength(J, 0, n); js_pushnumber(J, n); } static void Ap_reverse(js_State *J) { int len, middle, lower; len = js_getlength(J, 0); middle = len / 2; lower = 0; while (lower != middle) { int upper = len - lower - 1; int haslower = js_hasindex(J, 0, lower); int hasupper = js_hasindex(J, 0, upper); if (haslower && hasupper) { js_setindex(J, 0, lower); js_setindex(J, 0, upper); } else if (hasupper) { js_setindex(J, 0, lower); js_delindex(J, 0, upper); } else if (haslower) { js_setindex(J, 0, upper); js_delindex(J, 0, lower); } ++lower; } js_copy(J, 0); } static void Ap_shift(js_State *J) { int k, len; len = js_getlength(J, 0); if (len == 0) { js_setlength(J, 0, 0); js_pushundefined(J); return; } js_getindex(J, 0, 0); for (k = 1; k < len; ++k) { if (js_hasindex(J, 0, k)) js_setindex(J, 0, k - 1); else js_delindex(J, 0, k - 1); } js_delindex(J, 0, len - 1); js_setlength(J, 0, len - 1); } static void Ap_slice(js_State *J) { int len, s, e, n; double sv, ev; js_newarray(J); len = js_getlength(J, 0); sv = js_tointeger(J, 1); ev = js_isdefined(J, 2) ? js_tointeger(J, 2) : len; if (sv < 0) sv = sv + len; if (ev < 0) ev = ev + len; s = sv < 0 ? 0 : sv > len ? len : sv; e = ev < 0 ? 0 : ev > len ? len : ev; for (n = 0; s < e; ++s, ++n) if (js_hasindex(J, 0, s)) js_setindex(J, -2, n); } struct sortslot { js_Value v; js_State *J; }; static int sortcmp(const void *avoid, const void *bvoid) { const struct sortslot *aslot = avoid, *bslot = bvoid; const js_Value *a = &aslot->v, *b = &bslot->v; js_State *J = aslot->J; const char *sx, *sy; int c; int unx = (a->type == JS_TUNDEFINED); int uny = (b->type == JS_TUNDEFINED); if (unx) return !uny; if (uny) return -1; if (js_iscallable(J, 1)) { js_copy(J, 1); /* copy function */ js_pushundefined(J); js_pushvalue(J, *a); js_pushvalue(J, *b); js_call(J, 2); c = js_tonumber(J, -1); js_pop(J, 1); } else { js_pushvalue(J, *a); js_pushvalue(J, *b); sx = js_tostring(J, -2); sy = js_tostring(J, -1); c = strcmp(sx, sy); js_pop(J, 2); } return c; } static void Ap_sort(js_State *J) { struct sortslot *array = NULL; int i, n, len; len = js_getlength(J, 0); if (len <= 0) { js_copy(J, 0); return; } if (len >= INT_MAX / (int)sizeof(*array)) js_rangeerror(J, "array is too large to sort"); array = js_malloc(J, len * sizeof *array); /* Holding objects where the GC cannot see them is illegal, but if we * don't allow the GC to run we can use qsort() on a temporary array of * js_Values for fast sorting. */ ++J->gcpause; if (js_try(J)) { --J->gcpause; js_free(J, array); js_throw(J); } n = 0; for (i = 0; i < len; ++i) { if (js_hasindex(J, 0, i)) { array[n].v = *js_tovalue(J, -1); array[n].J = J; js_pop(J, 1); ++n; } } qsort(array, n, sizeof *array, sortcmp); for (i = 0; i < n; ++i) { js_pushvalue(J, array[i].v); js_setindex(J, 0, i); } for (i = n; i < len; ++i) { js_delindex(J, 0, i); } --J->gcpause; js_endtry(J); js_free(J, array); js_copy(J, 0); } static void Ap_splice(js_State *J) { int top = js_gettop(J); int len, start, del, add, k; double f; js_newarray(J); len = js_getlength(J, 0); f = js_tointeger(J, 1); if (f < 0) f = f + len; start = f < 0 ? 0 : f > len ? len : f; f = js_tointeger(J, 2); del = f < 0 ? 0 : f > len - start ? len - start : f; /* copy deleted items to return array */ for (k = 0; k < del; ++k) if (js_hasindex(J, 0, start + k)) js_setindex(J, -2, k); js_setlength(J, -1, del); /* shift the tail to resize the hole left by deleted items */ add = top - 3; if (add < del) { for (k = start; k < len - del; ++k) { if (js_hasindex(J, 0, k + del)) js_setindex(J, 0, k + add); else js_delindex(J, 0, k + add); } for (k = len; k > len - del + add; --k) js_delindex(J, 0, k - 1); } else if (add > del) { for (k = len - del; k > start; --k) { if (js_hasindex(J, 0, k + del - 1)) js_setindex(J, 0, k + add - 1); else js_delindex(J, 0, k + add - 1); } } /* copy new items into the hole */ for (k = 0; k < add; ++k) { js_copy(J, 3 + k); js_setindex(J, 0, start + k); } js_setlength(J, 0, len - del + add); } static void Ap_unshift(js_State *J) { int i, top = js_gettop(J); int k, len; len = js_getlength(J, 0); for (k = len; k > 0; --k) { int from = k - 1; int to = k + top - 2; if (js_hasindex(J, 0, from)) js_setindex(J, 0, to); else js_delindex(J, 0, to); } for (i = 1; i < top; ++i) { js_copy(J, i); js_setindex(J, 0, i - 1); } js_setlength(J, 0, len + top - 1); js_pushnumber(J, len + top - 1); } static void Ap_toString(js_State *J) { int top = js_gettop(J); js_pop(J, top - 1); Ap_join(J); } static void Ap_indexOf(js_State *J) { int k, len, from; len = js_getlength(J, 0); from = js_isdefined(J, 2) ? js_tointeger(J, 2) : 0; if (from < 0) from = len + from; if (from < 0) from = 0; js_copy(J, 1); for (k = from; k < len; ++k) { if (js_hasindex(J, 0, k)) { if (js_strictequal(J)) { js_pushnumber(J, k); return; } js_pop(J, 1); } } js_pushnumber(J, -1); } static void Ap_lastIndexOf(js_State *J) { int k, len, from; len = js_getlength(J, 0); from = js_isdefined(J, 2) ? js_tointeger(J, 2) : len - 1; if (from > len - 1) from = len - 1; if (from < 0) from = len + from; js_copy(J, 1); for (k = from; k >= 0; --k) { if (js_hasindex(J, 0, k)) { if (js_strictequal(J)) { js_pushnumber(J, k); return; } js_pop(J, 1); } } js_pushnumber(J, -1); } static void Ap_every(js_State *J) { int hasthis = js_gettop(J) >= 3; int k, len; if (!js_iscallable(J, 1)) js_typeerror(J, "callback is not a function"); len = js_getlength(J, 0); for (k = 0; k < len; ++k) { if (js_hasindex(J, 0, k)) { js_copy(J, 1); if (hasthis) js_copy(J, 2); else js_pushundefined(J); js_copy(J, -3); js_pushnumber(J, k); js_copy(J, 0); js_call(J, 3); if (!js_toboolean(J, -1)) return; js_pop(J, 2); } } js_pushboolean(J, 1); } static void Ap_some(js_State *J) { int hasthis = js_gettop(J) >= 3; int k, len; if (!js_iscallable(J, 1)) js_typeerror(J, "callback is not a function"); len = js_getlength(J, 0); for (k = 0; k < len; ++k) { if (js_hasindex(J, 0, k)) { js_copy(J, 1); if (hasthis) js_copy(J, 2); else js_pushundefined(J); js_copy(J, -3); js_pushnumber(J, k); js_copy(J, 0); js_call(J, 3); if (js_toboolean(J, -1)) return; js_pop(J, 2); } } js_pushboolean(J, 0); } static void Ap_forEach(js_State *J) { int hasthis = js_gettop(J) >= 3; int k, len; if (!js_iscallable(J, 1)) js_typeerror(J, "callback is not a function"); len = js_getlength(J, 0); for (k = 0; k < len; ++k) { if (js_hasindex(J, 0, k)) { js_copy(J, 1); if (hasthis) js_copy(J, 2); else js_pushundefined(J); js_copy(J, -3); js_pushnumber(J, k); js_copy(J, 0); js_call(J, 3); js_pop(J, 2); } } js_pushundefined(J); } static void Ap_map(js_State *J) { int hasthis = js_gettop(J) >= 3; int k, len; if (!js_iscallable(J, 1)) js_typeerror(J, "callback is not a function"); js_newarray(J); len = js_getlength(J, 0); for (k = 0; k < len; ++k) { if (js_hasindex(J, 0, k)) { js_copy(J, 1); if (hasthis) js_copy(J, 2); else js_pushundefined(J); js_copy(J, -3); js_pushnumber(J, k); js_copy(J, 0); js_call(J, 3); js_setindex(J, -3, k); js_pop(J, 1); } } } static void Ap_filter(js_State *J) { int hasthis = js_gettop(J) >= 3; int k, to, len; if (!js_iscallable(J, 1)) js_typeerror(J, "callback is not a function"); js_newarray(J); to = 0; len = js_getlength(J, 0); for (k = 0; k < len; ++k) { if (js_hasindex(J, 0, k)) { js_copy(J, 1); if (hasthis) js_copy(J, 2); else js_pushundefined(J); js_copy(J, -3); js_pushnumber(J, k); js_copy(J, 0); js_call(J, 3); if (js_toboolean(J, -1)) { js_pop(J, 1); js_setindex(J, -2, to++); } else { js_pop(J, 2); } } } } static void Ap_reduce(js_State *J) { int hasinitial = js_gettop(J) >= 3; int k, len; if (!js_iscallable(J, 1)) js_typeerror(J, "callback is not a function"); len = js_getlength(J, 0); k = 0; if (len == 0 && !hasinitial) js_typeerror(J, "no initial value"); /* initial value of accumulator */ if (hasinitial) js_copy(J, 2); else { while (k < len) if (js_hasindex(J, 0, k++)) break; if (k == len) js_typeerror(J, "no initial value"); } while (k < len) { if (js_hasindex(J, 0, k)) { js_copy(J, 1); js_pushundefined(J); js_rot(J, 4); /* accumulator on top */ js_rot(J, 4); /* property on top */ js_pushnumber(J, k); js_copy(J, 0); js_call(J, 4); /* calculate new accumulator */ } ++k; } /* return accumulator */ } static void Ap_reduceRight(js_State *J) { int hasinitial = js_gettop(J) >= 3; int k, len; if (!js_iscallable(J, 1)) js_typeerror(J, "callback is not a function"); len = js_getlength(J, 0); k = len - 1; if (len == 0 && !hasinitial) js_typeerror(J, "no initial value"); /* initial value of accumulator */ if (hasinitial) js_copy(J, 2); else { while (k >= 0) if (js_hasindex(J, 0, k--)) break; if (k < 0) js_typeerror(J, "no initial value"); } while (k >= 0) { if (js_hasindex(J, 0, k)) { js_copy(J, 1); js_pushundefined(J); js_rot(J, 4); /* accumulator on top */ js_rot(J, 4); /* property on top */ js_pushnumber(J, k); js_copy(J, 0); js_call(J, 4); /* calculate new accumulator */ } --k; } /* return accumulator */ } static void A_isArray(js_State *J) { if (js_isobject(J, 1)) { js_Object *T = js_toobject(J, 1); js_pushboolean(J, T->type == JS_CARRAY); } else { js_pushboolean(J, 0); } } void jsB_initarray(js_State *J) { js_pushobject(J, J->Array_prototype); { jsB_propf(J, "Array.prototype.toString", Ap_toString, 0); jsB_propf(J, "Array.prototype.concat", Ap_concat, 0); /* 1 */ jsB_propf(J, "Array.prototype.join", Ap_join, 1); jsB_propf(J, "Array.prototype.pop", Ap_pop, 0); jsB_propf(J, "Array.prototype.push", Ap_push, 0); /* 1 */ jsB_propf(J, "Array.prototype.reverse", Ap_reverse, 0); jsB_propf(J, "Array.prototype.shift", Ap_shift, 0); jsB_propf(J, "Array.prototype.slice", Ap_slice, 2); jsB_propf(J, "Array.prototype.sort", Ap_sort, 1); jsB_propf(J, "Array.prototype.splice", Ap_splice, 0); /* 2 */ jsB_propf(J, "Array.prototype.unshift", Ap_unshift, 0); /* 1 */ /* ES5 */ jsB_propf(J, "Array.prototype.indexOf", Ap_indexOf, 1); jsB_propf(J, "Array.prototype.lastIndexOf", Ap_lastIndexOf, 1); jsB_propf(J, "Array.prototype.every", Ap_every, 1); jsB_propf(J, "Array.prototype.some", Ap_some, 1); jsB_propf(J, "Array.prototype.forEach", Ap_forEach, 1); jsB_propf(J, "Array.prototype.map", Ap_map, 1); jsB_propf(J, "Array.prototype.filter", Ap_filter, 1); jsB_propf(J, "Array.prototype.reduce", Ap_reduce, 1); jsB_propf(J, "Array.prototype.reduceRight", Ap_reduceRight, 1); } js_newcconstructor(J, jsB_new_Array, jsB_new_Array, "Array", 0); /* 1 */ { /* ES5 */ jsB_propf(J, "Array.isArray", A_isArray, 1); } js_defglobal(J, "Array", JS_DONTENUM); }