phpv8/v8js_variables.cc

/*
  +----------------------------------------------------------------------+
  | PHP Version 7                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 1997-2017 The PHP Group                                |
  +----------------------------------------------------------------------+
  | http://www.opensource.org/licenses/mit-license.php  MIT License      |
  +----------------------------------------------------------------------+
  | Author: Jani Taskinen <jani.taskinen@iki.fi>                         |
  | Author: Patrick Reilly <preilly@php.net>                             |
  | Author: Stefan Siegl <stesie@php.net>                                |
  +----------------------------------------------------------------------+
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string>

#include "php_v8js_macros.h"
#include "v8js_exceptions.h"

extern "C" {
#include "zend_exceptions.h"
}

static void v8js_fetch_php_variable(v8::Local<v8::String> name, const v8::PropertyCallbackInfo<v8::Value>& info) /* {{{ */
{
    v8::Local<v8::External> data = v8::Local<v8::External>::Cast(info.Data());
    v8js_accessor_ctx *ctx = static_cast<v8js_accessor_ctx *>(data->Value());
	v8::Isolate *isolate = ctx->isolate;
	zval *variable;

	zend_is_auto_global(ctx->variable_name);

	if ((variable = zend_hash_find(&EG(symbol_table), ctx->variable_name))) {
		info.GetReturnValue().Set(zval_to_v8js(variable, isolate));
		return;
	}
}
/* }}} */

void v8js_accessor_ctx_dtor(v8js_accessor_ctx *ctx) /* {{{ */
{
	zend_string_release(ctx->variable_name);
	efree(ctx);
}
/* }}} */

void v8js_register_accessors(std::vector<v8js_accessor_ctx*> *accessor_list, v8::Local<v8::FunctionTemplate> php_obj_t, zval *array, v8::Isolate *isolate) /* {{{ */
{
	zend_string *property_name;
	zval *item;
	v8::Local<v8::ObjectTemplate> php_obj = php_obj_t->InstanceTemplate();

	ZEND_HASH_FOREACH_STR_KEY_VAL(Z_ARRVAL_P(array), property_name, item) {
		switch (Z_TYPE_P(item))
		{
			/*
			case IS_OBJECT:
			case IS_ARRAY:
			*/
			case IS_STRING:
				break;

			default:
				continue; /* Ignore invalid values */
		}

		if (ZSTR_LEN(property_name) > std::numeric_limits<int>::max()) {
			zend_throw_exception(php_ce_v8js_exception,
				"Property name length exceeds maximum supported length", 0);
			continue;
		}

        // Create context to store accessor data
        v8js_accessor_ctx *ctx = (v8js_accessor_ctx *)emalloc(sizeof(v8js_accessor_ctx));
        ctx->variable_name = zend_string_copy(Z_STR_P(item));
        ctx->isolate = isolate;

		/* Set the variable fetch callback for given symbol on named property */
		php_obj->SetAccessor(V8JS_STRL(ZSTR_VAL(property_name), static_cast<int>(ZSTR_LEN(property_name))), v8js_fetch_php_variable, NULL, v8::External::New(isolate, ctx), v8::PROHIBITS_OVERWRITING, v8::ReadOnly, v8::AccessorSignature::New(isolate, php_obj_t));

		/* record the context so we can free it later */
		accessor_list->push_back(ctx);
	} ZEND_HASH_FOREACH_END();
}
/* }}} */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * indent-tabs-mode: t
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */