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impl_array.c
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189 lines (159 loc) · 5.05 KB
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#include "devs_internal.h"
value_t prop_Array_length(devs_ctx_t *ctx, value_t self) {
if (!devs_is_array(ctx, self))
return devs_throw_expecting_error(ctx, DEVS_BUILTIN_STRING_ARRAY, self);
devs_array_t *arr = devs_handle_ptr_value(ctx, self);
return devs_value_from_int(arr->length);
}
static devs_array_t *devs_arg_self_array(devs_ctx_t *ctx) {
value_t s = devs_arg_self(ctx);
if (devs_is_array(ctx, s))
return (devs_array_t *)devs_handle_ptr_value(ctx, s);
devs_throw_expecting_error(ctx, DEVS_BUILTIN_STRING_ARRAY, s);
return NULL;
}
void meth2_Array_insert(devs_ctx_t *ctx) {
devs_array_t *self = devs_arg_self_array(ctx);
if (self) {
uint32_t idx = devs_arg_int(ctx, 0);
int32_t count = devs_arg_int(ctx, 1);
devs_array_insert(ctx, self, idx, count);
}
}
void fun1_Array_isArray(devs_ctx_t *ctx) {
devs_ret_bool(ctx, devs_is_array(ctx, devs_arg(ctx, 0)));
}
void methX_Array___ctor__(devs_ctx_t *ctx) {
// this is somewhat inefficient - the runtime allocates a map
value_t ignored = devs_arg_self(ctx);
(void)ignored;
unsigned size = 0;
int numargs = ctx->stack_top_for_gc - 1;
bool copy = false;
if (numargs >= 1) {
value_t arg0 = devs_arg(ctx, 0);
if (numargs == 1 && devs_is_number(arg0)) {
if (!devs_is_tagged_int(arg0)) {
devs_throw_range_error(ctx, "Invalid array length");
return;
}
size = devs_value_to_int(ctx, arg0);
} else {
size = numargs;
copy = true;
}
}
devs_array_t *arr = devs_array_try_alloc(ctx, size);
if (!arr)
return;
devs_ret_gc_ptr(ctx, arr);
if (copy)
for (int i = 0; i < numargs; ++i) {
devs_array_set(ctx, arr, i, devs_arg(ctx, i));
}
}
void methX_Array_push(devs_ctx_t *ctx) {
devs_array_t *self = devs_arg_self_array(ctx);
if (!self)
return;
for (int i = 0; i < ctx->stack_top_for_gc - 1; ++i) {
devs_array_set(ctx, self, self->length, devs_arg(ctx, i));
}
devs_ret_int(ctx, self->length);
}
void meth1_Array_pushRange(devs_ctx_t *ctx) {
devs_array_t *self = devs_arg_self_array(ctx);
if (!self)
return;
value_t other = devs_arg(ctx, 0);
if (!devs_is_array(ctx, other)) {
devs_throw_expecting_error(ctx, DEVS_BUILTIN_STRING_ARRAY, other);
return;
}
devs_array_t *src = devs_value_to_gc_obj(ctx, other);
if (src->length) {
// note that self and src can alias
unsigned len_src = src->length;
unsigned len0 = self->length;
if (devs_array_insert(ctx, self, self->length, len_src) == 0) {
memcpy(self->data + len0, src->data, len_src * sizeof(value_t));
}
}
devs_ret_int(ctx, self->length);
}
void methX_Array_slice(devs_ctx_t *ctx) {
devs_array_t *self = devs_arg_self_array(ctx);
unsigned numargs = ctx->stack_top_for_gc - 1;
int32_t len = self->length;
int32_t start = numargs > 0 ? devs_arg_int(ctx, 0) : 0;
if (start < 0)
start = len + start;
if (start < 0)
start = 0;
int32_t end = numargs > 1 ? devs_arg_int_defl(ctx, 1, len) : len;
if (end < 0)
end = len + end;
if (end > len)
end = len;
if (start > end)
start = end;
devs_array_t *res = devs_array_try_alloc(ctx, end - start);
if (res)
memcpy(res->data, self->data + start, (end - start) * sizeof(value_t));
devs_ret_gc_ptr(ctx, res);
}
void meth1_Array_join(devs_ctx_t *ctx) {
devs_array_t *self = devs_arg_self_array(ctx);
if (!self)
return;
value_t sep = devs_arg(ctx, 0);
unsigned sepsz;
unsigned seplen;
const char *sepch;
if (devs_is_undefined(sep)) {
seplen = sepsz = 1;
sepch = ",";
} else {
sep = devs_value_to_string(ctx, sep);
sepch = devs_string_get_utf8(ctx, sep, &sepsz);
if (sepch == NULL)
return;
seplen = devs_string_length(ctx, sep);
devs_value_pin(ctx, sep);
}
unsigned sz = 0, len = 0;
for (unsigned i = 0; i < self->length; ++i) {
value_t v = devs_value_to_string(ctx, self->data[i]);
if (i > 0) {
len += seplen;
sz += sepsz;
}
unsigned tsz;
if (devs_string_get_utf8(ctx, v, &tsz) == NULL)
goto error;
sz += tsz;
len += devs_string_length(ctx, v);
}
value_t r;
char *d = devs_string_prep(ctx, &r, sz, len);
if (!d)
goto error;
unsigned off = 0;
for (unsigned i = 0; i < self->length; ++i) {
value_t v = devs_value_to_string(ctx, self->data[i]);
if (i > 0) {
memcpy(d + off, sepch, sepsz);
off += sepsz;
}
unsigned tsz;
const char *ss = devs_string_get_utf8(ctx, v, &tsz);
if (ss == NULL)
goto error;
memcpy(d + off, ss, tsz);
off += tsz;
}
devs_string_finish(ctx, &r, off, len);
devs_ret(ctx, r);
error:
devs_value_unpin(ctx, sep);
}