runtime.c
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runtime.c
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	#include "ant.h"
	#include "bind.h"
	#include "pool.h"
	#include "errors.h"
	#include "reactor.h"
	#include "runtime.h"
	#include "internal.h"

	#include "gc/roots.h"
	#include "modules/symbol.h"
	#include "silver/engine.h"

	#include <ctype.h>
	#include <math.h>
	#include <stdlib.h>
	#include <string.h>

	bool inspector_is_remote_handle_value(ant_value_t value) {
	return is_object_type(value);
	}

	static uint32_t inspector_object_handle_id(ant_t *js, ant_value_t value) {
	if (!js \|\| !inspector_is_remote_handle_value(value)) return 0;

	for (inspector_object_handle_t *h = g_inspector.object_handles; h; h = h->next) {
	if (h->value == value) return h->id;
	}

	inspector_object_handle_t h = calloc(1, sizeof(h));
	if (!h) return 0;
	h->id = ++g_inspector.next_object_id;
	if (h->id == 0) h->id = ++g_inspector.next_object_id;
	h->value = value;
	if (!gc_push_root(js, &h->value)) {
	free(h);
	return 0;
	}
	h->next = g_inspector.object_handles;
	g_inspector.object_handles = h;
	return h->id;
	}

	static bool inspector_parse_object_id(const char object_id, uint32_t id) {
	if (!object_id \|\| strncmp(object_id, "ant:", 4) != 0) return false;
	char *end = NULL;
	unsigned long parsed = strtoul(object_id + 4, &end, 10);
	if (!end \|\| *end != '\0' \|\| parsed == 0 \|\| parsed > UINT32_MAX) return false;
	if (id) *id = (uint32_t)parsed;
	return true;
	}

	static bool inspector_object_for_id(const char object_id, ant_value_t out) {
	uint32_t id = 0;
	if (!inspector_parse_object_id(object_id, &id)) return false;
	for (inspector_object_handle_t *h = g_inspector.object_handles; h; h = h->next) {
	if (h->id == id) {
	if (out) *out = h->value;
	return true;
	}
	}
	return false;
	}

	static bool inspector_append_object_id(sbuf_t *out, uint32_t id) {
	if (id == 0) return true;
	return sbuf_append(out, ",\"objectId\":\"ant:") &&
	sbuf_appendf(out, "%u", id) &&
	sbuf_append(out, "\"");
	}

	static const char inspector_function_name(ant_t js, ant_value_t value, size_t *len) {
	if (len) *len = 0;
	if (vtype(value) == T_CFUNC) {
	const ant_cfunc_meta_t *meta = js_as_cfunc_meta(value);
	if (!meta \|\| !meta->name) return NULL;
	if (len) *len = strlen(meta->name);
	return meta->name;
	}

	if (vtype(value) != T_FUNC) return NULL;
	ant_value_t name = js_get(js, value, "name");
	if (vtype(name) != T_STR) {
	ant_value_t cfunc = js_get_slot(js_func_obj(value), SLOT_CFUNC);
	return inspector_function_name(js, cfunc, len);
	}
	return js_getstr(js, name, len);
	}

	static bool inspector_append_function_description(ant_t js, ant_value_t value, sbuf_t out) {
	size_t name_len = 0;
	const char *name = inspector_function_name(js, value, &name_len);
	if (!sbuf_append(out, "\"function ")) return false;
	if (name && name_len > 0) {
	if (!sbuf_append_len(out, name, name_len)) return false;
	}
	return sbuf_append(out, "() { [native code] }\"");
	}

	static const char inspector_object_tag(ant_t js, ant_value_t value, size_t *len) {
	if (len) *len = 0;
	if (!js \|\| !inspector_is_remote_handle_value(value)) return NULL;
	ant_value_t tag = js_get_sym(js, value, get_toStringTag_sym());
	if (vtype(tag) != T_STR) return NULL;
	return js_getstr(js, tag, len);
	}

	static bool inspector_append_preview_value(ant_t js, ant_value_t value, sbuf_t out) {
	uint8_t type = vtype(value);
	switch (type) {
	case T_UNDEF:
	return sbuf_append(out, "\"type\":\"undefined\",\"value\":\"undefined\"");
	case T_NULL:
	return sbuf_append(out, "\"type\":\"object\",\"subtype\":\"null\",\"value\":\"null\"");
	case T_BOOL:
	return sbuf_appendf(out, "\"type\":\"boolean\",\"value\":\"%s\"", value == js_true ? "true" : "false");
	case T_NUM: {
	double n = js_getnum(value);
	if (isnan(n)) return sbuf_append(out, "\"type\":\"number\",\"value\":\"NaN\"");
	if (isinf(n)) return sbuf_appendf(out, "\"type\":\"number\",\"value\":\"%sInfinity\"", n < 0 ? "-" : "");
	return sbuf_appendf(out, "\"type\":\"number\",\"value\":\"%.17g\"", n);
	}
	case T_STR: {
	size_t len = 0;
	const char *s = js_getstr(js, value, &len);
	if (!sbuf_append(out, "\"type\":\"string\",\"value\":")) return false;
	return sbuf_json_string_len(out, s, len);
	}
	case T_FUNC: {
	if (!sbuf_append(out, "\"type\":\"function\",\"value\":")) return false;
	return inspector_append_function_description(js, value, out);
	}
	case T_CFUNC: {
	if (!sbuf_append(out, "\"type\":\"function\",\"value\":")) return false;
	return inspector_append_function_description(js, value, out);
	}
	default: {
	if (inspector_is_remote_handle_value(value)) {
	const char *class_name = "Object";
	const char *desc = "Object";
	size_t tag_len = 0;
	const char *tag = inspector_object_tag(js, value, &tag_len);
	const char *subtype = NULL;
	if (value == js_glob(js)) {
	class_name = "global";
	desc = "global";
	} else if (type == T_ARR) {
	class_name = "Array";
	desc = "Array";
	subtype = "array";
	} else if (type == T_PROMISE) {
	class_name = "Promise";
	desc = "Promise";
	subtype = "promise";
	} else if (type == T_GENERATOR) {
	class_name = "Generator";
	desc = "Generator";
	subtype = "generator";
	} else if (tag && tag_len > 0) {
	if (!sbuf_append(out, "\"type\":\"object\",\"className\":")) return false;
	if (!sbuf_json_string_len(out, tag, tag_len)) return false;
	if (!sbuf_append(out, ",\"value\":")) return false;
	return sbuf_json_string_len(out, tag, tag_len);
	}

	if (!sbuf_append(out, "\"type\":\"object\"")) return false;
	if (subtype) {
	if (!sbuf_append(out, ",\"subtype\":")) return false;
	if (!sbuf_json_string(out, subtype)) return false;
	}
	if (!sbuf_append(out, ",\"className\":")) return false;
	if (!sbuf_json_string(out, class_name)) return false;
	if (!sbuf_append(out, ",\"value\":")) return false;
	return sbuf_json_string(out, desc);
	}

	char buf[128];
	js_cstr_t desc = js_to_cstr(js, value, buf, sizeof(buf));
	bool ok = sbuf_append(out, "\"type\":\"object\",\"value\":") && sbuf_json_string(out, desc.ptr);
	if (desc.needs_free) free((void *)desc.ptr);
	return ok;
	}
	}
	}

	static bool inspector_append_object_preview(
	ant_t *js,
	ant_value_t value,
	const char *type,
	const char *subtype,
	const char *description,
	sbuf_t *out
	) {
	if (!sbuf_append(out, ",\"preview\":{\"type\":")) return false;
	if (!sbuf_json_string(out, type ? type : "object")) return false;
	if (subtype) {
	if (!sbuf_append(out, ",\"subtype\":")) return false;
	if (!sbuf_json_string(out, subtype)) return false;
	}
	if (!sbuf_append(out, ",\"description\":")) return false;
	if (!sbuf_json_string(out, description ? description : "Object")) return false;
	if (!sbuf_append(out, ",\"overflow\":")) return false;

	ant_iter_t iter = js_prop_iter_begin(js, value);
	const char *key = NULL;
	size_t key_len = 0;
	ant_value_t prop = js_mkundef();
	size_t count = 0;
	const size_t limit = 8;
	bool overflow = false;
	sbuf_t props = {0};
	if (!sbuf_append(&props, "[")) {
	js_prop_iter_end(&iter);
	return false;
	}

	while (js_prop_iter_next(&iter, &key, &key_len, &prop)) {
	if (count >= limit) {
	overflow = true;
	break;
	}
	if (count > 0 && !sbuf_append(&props, ",")) {
	js_prop_iter_end(&iter);
	free(props.data);
	return false;
	}
	if (!sbuf_append(&props, "{\"name\":")) {
	js_prop_iter_end(&iter);
	free(props.data);
	return false;
	}
	if (!sbuf_json_string_len(&props, key, key_len)) {
	js_prop_iter_end(&iter);
	free(props.data);
	return false;
	}
	if (!sbuf_append(&props, ",")) {
	js_prop_iter_end(&iter);
	free(props.data);
	return false;
	}
	if (!inspector_append_preview_value(js, prop, &props)) {
	js_prop_iter_end(&iter);
	free(props.data);
	return false;
	}
	if (!sbuf_append(&props, "}")) {
	js_prop_iter_end(&iter);
	free(props.data);
	return false;
	}
	count++;
	}
	js_prop_iter_end(&iter);

	if (!sbuf_append(&props, "]")) {
	free(props.data);
	return false;
	}

	bool ok = sbuf_append(out, overflow ? "true" : "false") &&
	sbuf_append(out, ",\"properties\":") &&
	sbuf_append_len(out, props.data, props.len) &&
	sbuf_append(out, "}");
	free(props.data);
	return ok;
	}

	bool inspector_value_to_remote_object(ant_t js, ant_value_t value, sbuf_t out) {
	uint8_t type = vtype(value);
	switch (type) {
	case T_UNDEF:
	return sbuf_append(out, "{\"type\":\"undefined\"}");
	case T_NULL:
	return sbuf_append(out, "{\"type\":\"object\",\"subtype\":\"null\",\"value\":null}");
	case T_BOOL:
	return sbuf_appendf(out, "{\"type\":\"boolean\",\"value\":%s}", value == js_true ? "true" : "false");
	case T_NUM: {
	double n = js_getnum(value);
	if (isnan(n)) return sbuf_append(out, "{\"type\":\"number\",\"unserializableValue\":\"NaN\",\"description\":\"NaN\"}");
	if (isinf(n)) return sbuf_appendf(
	out, "{\"type\":\"number\",\"unserializableValue\":\"%sInfinity\",\"description\":\"%sInfinity\"}",
	n < 0 ? "-" : "", n < 0 ? "-" : ""
	);
	return sbuf_appendf(out, "{\"type\":\"number\",\"value\":%.17g,\"description\":\"%.17g\"}", n, n);
	}
	case T_STR: {
	size_t len = 0;
	const char *s = js_getstr(js, value, &len);
	if (!sbuf_append(out, "{\"type\":\"string\",\"value\":")) return false;
	if (!sbuf_json_string_len(out, s, len)) return false;
	if (!sbuf_append(out, ",\"description\":")) return false;
	if (!sbuf_json_string_len(out, s, len)) return false;
	return sbuf_append(out, "}");
	}
	case T_CFUNC: {
	ant_value_t promoted = js_cfunc_promote(js, value);
	if (vtype(promoted) == T_FUNC) return inspector_value_to_remote_object(js, promoted, out);

	if (!sbuf_append(out, "{\"type\":\"function\",\"className\":\"Function\",\"description\":")) return false;
	if (!inspector_append_function_description(js, value, out)) return false;
	return sbuf_append(out, "}");
	}
	case T_FUNC: {
	uint32_t object_id = inspector_object_handle_id(js, value);
	sbuf_t desc = {0};
	if (!inspector_append_function_description(js, value, &desc)) {
	free(desc.data);
	return false;
	}
	if (!sbuf_append(out, "{\"type\":\"function\",\"className\":\"Function\",\"description\":")) {
	free(desc.data);
	return false;
	}
	if (!sbuf_append_len(out, desc.data, desc.len)) {
	free(desc.data);
	return false;
	}
	if (!inspector_append_object_id(out, object_id)) {
	free(desc.data);
	return false;
	}
	if (desc.len >= 2) desc.data[desc.len - 1] = '\0';
	const char *preview_desc = desc.data ? desc.data + 1 : "function () { [native code] }";
	if (!inspector_append_object_preview(js, value, "function", NULL, preview_desc, out)) {
	free(desc.data);
	return false;
	}
	free(desc.data);
	return sbuf_append(out, "}");
	}
	default: {
	if (inspector_is_remote_handle_value(value)) {
	const char *class_name = "Object";
	const char *desc = "Object";
	size_t tag_len = 0;
	const char *tag = inspector_object_tag(js, value, &tag_len);
	const char *subtype = NULL;
	if (value == js_glob(js)) {
	class_name = "global";
	desc = "global";
	} else if (type == T_ARR) {
	class_name = "Array";
	desc = "Array";
	subtype = "array";
	} else if (type == T_PROMISE) {
	class_name = "Promise";
	desc = "Promise";
	subtype = "promise";
	} else if (type == T_GENERATOR) {
	class_name = "Generator";
	desc = "Generator";
	subtype = "generator";
	} else if (tag && tag_len > 0) {
	class_name = NULL;
	desc = NULL;
	}

	uint32_t object_id = inspector_object_handle_id(js, value);
	if (!sbuf_append(out, "{\"type\":\"object\"")) return false;
	if (subtype) {
	if (!sbuf_append(out, ",\"subtype\":")) return false;
	if (!sbuf_json_string(out, subtype)) return false;
	}
	if (!sbuf_append(out, ",\"className\":")) return false;
	if (class_name) {
	if (!sbuf_json_string(out, class_name)) return false;
	} else if (!sbuf_json_string_len(out, tag, tag_len)) return false;
	if (!sbuf_append(out, ",\"description\":")) return false;
	if (desc) {
	if (!sbuf_json_string(out, desc)) return false;
	} else if (!sbuf_json_string_len(out, tag, tag_len)) return false;
	if (!inspector_append_object_id(out, object_id)) return false;
	const char *preview_desc = desc;
	char tag_buf[64];
	if (!preview_desc && tag && tag_len > 0) {
	size_t copy_len = tag_len < sizeof(tag_buf) - 1 ? tag_len : sizeof(tag_buf) - 1;
	memcpy(tag_buf, tag, copy_len);
	tag_buf[copy_len] = '\0';
	preview_desc = tag_buf;
	}
	if (!inspector_append_object_preview(js, value, "object", subtype, preview_desc, out)) return false;
	return sbuf_append(out, "}");
	}

	char buf[512];
	js_cstr_t desc = js_to_cstr(js, value, buf, sizeof(buf));
	bool ok = sbuf_append(out, "{\"type\":\"object\",\"description\":") &&
	sbuf_json_string(out, desc.ptr) &&
	sbuf_append(out, "}");
	if (desc.needs_free) free((void *)desc.ptr);
	return ok;
	}
	}
	}

	bool inspector_append_call_location(ant_t js, sbuf_t b) {
	if (!js \|\| !b) return true;

	js_error_site_t saved = js->errsite;
	js_clear_error_site(js);

	const char *filename = NULL;
	int line = 1;
	int column = 1;
	js_get_call_location(js, &filename, &line, &column);
	js->errsite = saved;

	if (!filename \|\| !*filename) return true;
	char *url = inspector_make_script_url(filename);
	if (!url) return false;

	inspector_script_t *script = inspector_script_for_url(url);
	bool ok =
	sbuf_append(b, ",\"stackTrace\":{\"callFrames\":[{\"functionName\":\"\",\"scriptId\":\"") &&
	(script ? sbuf_appendf(b, "%d", script->id) : sbuf_append(b, "")) &&
	sbuf_append(b, "\",\"url\":") &&
	sbuf_json_string(b, url) &&
	sbuf_append(b, ",\"lineNumber\":") &&
	sbuf_appendf(b, "%d", line > 0 ? line - 1 : 0) &&
	sbuf_append(b, ",\"columnNumber\":") &&
	sbuf_appendf(b, "%d", column > 0 ? column - 1 : 0) &&
	sbuf_append(b, "}]},\"lineNumber\":") &&
	sbuf_appendf(b, "%d", line > 0 ? line - 1 : 0) &&
	sbuf_append(b, ",\"columnNumber\":") &&
	sbuf_appendf(b, "%d", column > 0 ? column - 1 : 0);
	free(url);
	return ok;
	}

	static bool inspector_ident_char(char c, bool first) {
	unsigned char uc = (unsigned char)c;
	return c == '_' \|\| c == '$' \|\| isalpha(uc) \|\| (!first && isdigit(uc));
	}

	static bool inspector_eval_safe_member_expr(ant_t js, const char expr, size_t expr_len, ant_value_t *out) {
	if (!js \|\| !expr \|\| !out) return false;
	while (expr_len > 0 && isspace((unsigned char)*expr)) {
	expr++;
	expr_len--;
	}
	while (expr_len > 0 && isspace((unsigned char)expr[expr_len - 1])) expr_len--;
	while (expr_len > 0 && expr[expr_len - 1] == '.') expr_len--;
	if (expr_len == 0) return false;

	ant_value_t cur = js_glob(js);
	size_t pos = 0;
	bool first_part = true;
	while (pos < expr_len) {
	if (!inspector_ident_char(expr[pos], true)) return false;
	size_t start = pos++;
	while (pos < expr_len && inspector_ident_char(expr[pos], false)) pos++;
	size_t len = pos - start;
	if (len == 0 \|\| len >= 128) return false;

	char key[128];
	memcpy(key, expr + start, len);
	key[len] = '\0';

	if (first_part && (strcmp(key, "globalThis") == 0 \|\| strcmp(key, "global") == 0 \|\| strcmp(key, "this") == 0)) {
	cur = js_glob(js);
	} else {
	if (first_part) cur = js_get(js, js_glob(js), key);
	else cur = is_object_type(cur) \|\| vtype(cur) == T_CFUNC ? js_get(js, cur, key) : js_mkundef();
	}

	first_part = false;
	if (pos == expr_len) {
	*out = cur;
	return true;
	}
	if (expr[pos] != '.') return false;
	pos++;
	if (pos == expr_len) {
	*out = cur;
	return true;
	}
	}

	*out = cur;
	return true;
	}

	static void inspector_send_side_effect_blocked(inspector_client_t *client, int id) {
	inspector_send_response_obj(
	client,
	id,
	"{\"result\":{\"type\":\"undefined\"},\"exceptionDetails\":{\"exceptionId\":1,\"text\":\"EvalError: Possible side-effect in debug-evaluate\",\"lineNumber\":0,\"columnNumber\":0,\"exception\":{\"type\":\"object\",\"subtype\":\"error\",\"className\":\"EvalError\",\"description\":\"EvalError: Possible side-effect in debug-evaluate\"}}}"
	);
	}

	void inspector_clear_console_events(void) {
	while (g_inspector.console_events_head) {
	inspector_console_event_t *event = g_inspector.console_events_head;
	g_inspector.console_events_head = event->next;
	free(event->json);
	free(event);
	}
	g_inspector.console_events_tail = NULL;
	g_inspector.console_event_count = 0;
	}

	static void inspector_store_console_event(const char *json) {
	if (!json) return;

	inspector_console_event_t event = calloc(1, sizeof(event));
	if (!event) return;
	event->json = strdup(json);
	if (!event->json) {
	free(event);
	return;
	}

	if (g_inspector.console_events_tail) g_inspector.console_events_tail->next = event;
	else g_inspector.console_events_head = event;
	g_inspector.console_events_tail = event;
	g_inspector.console_event_count++;

	while (g_inspector.console_event_count > k_inspector_console_event_limit && g_inspector.console_events_head) {
	inspector_console_event_t *old = g_inspector.console_events_head;
	g_inspector.console_events_head = old->next;
	if (g_inspector.console_events_tail == old) g_inspector.console_events_tail = NULL;
	free(old->json);
	free(old);
	g_inspector.console_event_count--;
	}
	}

	static void inspector_notify_console(const char *json) {
	for (inspector_client_t *c = g_inspector.clients; c; c = c->next) {
	if (c->runtime_enabled \|\| c->console_enabled) inspector_send_ws(c, json);
	}
	}

	void inspector_replay_console_events(inspector_client_t *client) {
	if (!client \|\| client->console_replayed) return;
	client->console_replayed = true;
	for (inspector_console_event_t *event = g_inspector.console_events_head; event; event = event->next)
	inspector_send_ws(client, event->json);
	}

	void inspector_clear_exception_state(ant_t *js) {
	if (!js) return;
	js->thrown_exists = false;
	js->thrown_value = js_mkundef();
	js->thrown_stack = js_mkundef();
	}

	static ant_value_t inspector_exception_value(ant_t *js, ant_value_t result) {
	if (js && js->thrown_exists) return js->thrown_value;
	if (vtype(result) == T_ERR && vdata(result) != 0) return mkval(T_OBJ, vdata(result));
	return result;
	}

	static bool inspector_exception_description(ant_t js, ant_value_t err, sbuf_t out) {
	if (!js \|\| !out) return false;
	if (vtype(err) == T_OBJ) {
	ant_value_t stack = js_get(js, err, "stack");
	if (vtype(stack) == T_STR) {
	size_t len = 0;
	const char *s = js_getstr(js, stack, &len);
	return sbuf_json_string_len(out, s, len);
	}

	ant_value_t message = js_get(js, err, "message");
	if (vtype(message) == T_STR) {
	size_t len = 0;
	const char *s = js_getstr(js, message, &len);
	return sbuf_json_string_len(out, s, len);
	}
	}

	char buf[512];
	js_cstr_t desc = js_to_cstr(js, err, buf, sizeof(buf));
	bool ok = sbuf_json_string(out, desc.ptr);
	if (desc.needs_free) free((void *)desc.ptr);
	return ok;
	}

	static size_t inspector_heap_used(ant_t *js) {
	if (!js) return 0;
	ant_string_pool_stats_t strings = js_string_pool_stats(&js->pool.string);
	ant_pool_stats_t ropes = js_pool_stats(&js->pool.rope);
	ant_pool_stats_t symbols = js_pool_stats(&js->pool.symbol);
	ant_pool_stats_t permanent = js_pool_stats(&js->pool.permanent);
	ant_pool_stats_t bigints = js_class_pool_stats(&js->pool.bigint);
	return
	js->obj_arena.live_count * js->obj_arena.elem_size +
	js->closure_arena.live_count * js->closure_arena.elem_size +
	js->upvalue_arena.live_count * js->upvalue_arena.elem_size +
	strings.total.used + ropes.used + symbols.used + permanent.used + bigints.used +
	code_arena_get_memory() + parse_arena_get_memory();
	}

	static size_t inspector_heap_total(ant_t *js) {
	if (!js) return 0;
	ant_string_pool_stats_t strings = js_string_pool_stats(&js->pool.string);
	ant_pool_stats_t ropes = js_pool_stats(&js->pool.rope);
	ant_pool_stats_t symbols = js_pool_stats(&js->pool.symbol);
	ant_pool_stats_t permanent = js_pool_stats(&js->pool.permanent);
	ant_pool_stats_t bigints = js_class_pool_stats(&js->pool.bigint);
	return
	js->obj_arena.committed +
	js->closure_arena.committed +
	js->upvalue_arena.committed +
	strings.total.capacity + ropes.capacity + symbols.capacity + permanent.capacity + bigints.capacity +
	code_arena_get_memory() + parse_arena_get_memory();
	}

	void inspector_send_execution_context(inspector_client_t *client) {
	inspector_send_ws(
	client,
	"{\"method\":\"Runtime.executionContextCreated\",\"params\":{\"context\":{\"id\":1,\"origin\":\"\",\"name\":\"Ant\",\"uniqueId\":\"ant-main\",\"auxData\":{\"isDefault\":true}}}}"
	);
	}

	void inspector_send_eval_result(inspector_client_t *client, int id, ant_value_t result) {
	ant_t *js = client->js;
	bool exception = is_err(result) \|\| js->thrown_exists;
	ant_value_t exception_value = exception ? inspector_exception_value(js, result) : js_mkundef();

	sbuf_t b = {0};
	if (!sbuf_append(&b, "{\"result\":")) goto oom;
	if (!inspector_value_to_remote_object(js, exception ? exception_value : result, &b)) goto oom;
	if (exception) {
	if (!sbuf_append(&b, ",\"exceptionDetails\":{\"exceptionId\":1,\"text\":")) goto oom;
	if (!inspector_exception_description(js, exception_value, &b)) goto oom;
	if (!sbuf_append(&b, ",\"lineNumber\":0,\"columnNumber\":0,\"exception\":")) goto oom;
	if (!inspector_value_to_remote_object(js, exception_value, &b)) goto oom;
	if (!sbuf_append(&b, "}")) goto oom;
	}
	if (!sbuf_append(&b, "}")) goto oom;
	inspector_send_response_obj(client, id, b.data);
	free(b.data);
	inspector_clear_exception_state(js);
	return;

	oom:
	free(b.data);
	inspector_clear_exception_state(js);
	inspector_send_error(client, id, -32000, "Out of memory");
	}

	void inspector_eval(inspector_client_t client, int id, yyjson_val params) {
	yyjson_val *expr_val = params ? yyjson_obj_get(params, "expression") : NULL;
	if (!expr_val \|\| !yyjson_is_str(expr_val)) {
	inspector_send_error(client, id, -32602, "Runtime.evaluate requires expression");
	return;
	}

	const char *expr = yyjson_get_str(expr_val);
	size_t expr_len = yyjson_get_len(expr_val);

	const char *prev_filename = client->js->filename;
	inspector_clear_exception_state(client->js);

	if (inspector_param_bool(params, "throwOnSideEffect")) {
	ant_value_t safe_result = js_mkundef();
	if (inspector_eval_safe_member_expr(client->js, expr, expr_len, &safe_result)) {
	inspector_send_eval_result(client, id, safe_result);
	} else {
	inspector_send_side_effect_blocked(client, id);
	}
	return;
	}

	js_set_filename(client->js, "[inspector]");
	ant_value_t result = js_eval_bytecode_repl(client->js, expr, expr_len);
	js_reactor_pump_repl_nowait(client->js);
	js_set_filename(client->js, prev_filename);
	inspector_send_eval_result(client, id, result);
	}

	void inspector_get_heap_usage(inspector_client_t *client, int id) {
	sbuf_t b = {0};
	if (sbuf_appendf(
	&b, "{\"usedSize\":%zu,\"totalSize\":%zu}",
	inspector_heap_used(client->js),
	inspector_heap_total(client->js)
	)) inspector_send_response_obj(client, id, b.data);
	else inspector_send_error(client, id, -32000, "Out of memory");
	free(b.data);
	}

	void inspector_get_properties(inspector_client_t client, int id, yyjson_val params) {
	yyjson_val *object_id_val = params ? yyjson_obj_get(params, "objectId") : NULL;
	const char *object_id = object_id_val && yyjson_is_str(object_id_val) ? yyjson_get_str(object_id_val) : NULL;
	bool own_only = inspector_param_bool(params, "ownProperties");
	ant_value_t object = js_mkundef();
	if (!inspector_object_for_id(object_id, &object)) {
	inspector_send_error(client, id, -32000, "Could not find object with given id");
	return;
	}

	sbuf_t b = {0};
	if (!sbuf_append(&b, "{\"result\":[")) goto oom;

	bool first = true;
	for (ant_value_t cur = object, depth = 0; inspector_is_remote_handle_value(cur) && depth < 64; depth++) {
	ant_iter_t iter = js_prop_iter_begin(client->js, cur);
	const char *key = NULL;
	size_t key_len = 0;
	ant_value_t value = js_mkundef();
	while (js_prop_iter_next(&iter, &key, &key_len, &value)) {
	if (!first && !sbuf_append(&b, ",")) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	first = false;
	if (!sbuf_append(&b, "{\"name\":")) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	if (!sbuf_json_string_len(&b, key, key_len)) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	if (!sbuf_append(&b, ",\"enumerable\":true,\"configurable\":true,\"writable\":true,\"isOwn\":")) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	if (!sbuf_append(&b, depth == 0 ? "true" : "false")) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	if (!sbuf_append(&b, ",\"value\":")) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	if (!inspector_value_to_remote_object(client->js, value, &b)) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	if (!sbuf_append(&b, "}")) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	}
	js_prop_iter_end(&iter);
	if (own_only) break;
	ant_value_t proto = js_get_proto(client->js, cur);
	if (!inspector_is_remote_handle_value(proto)) break;
	cur = proto;
	}

	if (!sbuf_append(&b, "],\"internalProperties\":[")) goto oom;
	ant_value_t proto = js_get_proto(client->js, object);
	if (inspector_is_remote_handle_value(proto) \|\| vtype(proto) == T_NULL) {
	if (!sbuf_append(&b, "{\"name\":\"[[Prototype]]\",\"value\":")) goto oom;
	if (!inspector_value_to_remote_object(client->js, proto, &b)) goto oom;
	if (!sbuf_append(&b, "}")) goto oom;
	}
	if (!sbuf_append(&b, "]}")) goto oom;
	inspector_send_response_obj(client, id, b.data);
	free(b.data);
	return;

	oom:
	free(b.data);
	inspector_send_error(client, id, -32000, "Out of memory");
	}

	void inspector_global_lexical_scope_names(inspector_client_t *client, int id) {
	sbuf_t b = {0};
	if (!sbuf_append(&b, "{\"names\":[")) goto oom;

	bool first = true;
	ant_iter_t iter = js_prop_iter_begin(client->js, js_glob(client->js));
	const char *key = NULL;
	size_t key_len = 0;
	ant_value_t value = js_mkundef();
	while (js_prop_iter_next(&iter, &key, &key_len, &value)) {
	(void)value;
	if (!first && !sbuf_append(&b, ",")) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	first = false;
	if (!sbuf_json_string_len(&b, key, key_len)) {
	js_prop_iter_end(&iter);
	goto oom;
	}
	}
	js_prop_iter_end(&iter);

	if (!sbuf_append(&b, "]}")) goto oom;
	inspector_send_response_obj(client, id, b.data);
	free(b.data);
	return;

	oom:
	free(b.data);
	inspector_send_error(client, id, -32000, "Out of memory");
	}

	void ant_inspector_console_api_called(ant_t js, const char level, ant_value_t *args, int nargs) {
	if (!g_inspector.started) return;
	sbuf_t b = {0};
	if (!sbuf_append(&b, "{\"method\":\"Runtime.consoleAPICalled\",\"params\":{\"type\":")) goto done;
	if (!sbuf_json_string(&b, level ? level : "log")) goto done;
	if (!sbuf_append(&b, ",\"args\":[")) goto done;
	for (int i = 0; i < nargs; i++) {
	if (i && !sbuf_append(&b, ",")) goto done;
	if (!inspector_value_to_remote_object(js, args[i], &b)) goto done;
	}
	if (!sbuf_appendf(&b, "],\"executionContextId\":1,\"timestamp\":%.3f", (double)uv_hrtime() / 1000000.0)) goto done;
	if (!inspector_append_call_location(js, &b)) goto done;
	if (!sbuf_append(&b, "}}")) goto done;
	inspector_store_console_event(b.data);
	inspector_notify_console(b.data);
	done:
	free(b.data);
	}

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