X-Git-Url: https://git.m6w6.name/?p=m6w6%2Fext-propro;a=blobdiff_plain;f=src%2Fphp_propro_api.c;fp=src%2Fphp_propro_api.c;h=c92d6d4a3f7754da92505947919ca129ee9d3073;hp=0000000000000000000000000000000000000000;hb=d06440394c6b84fe00ae597b48210aea2abbce82;hpb=3ba4950bf5922c2231ed600bc90bbaea5c939274

diff --git a/src/php_propro_api.c b/src/php_propro_api.c
new file mode 100644
index 0000000..c92d6d4
--- /dev/null
+++ b/src/php_propro_api.c
@@ -0,0 +1,597 @@
+/*
+    +--------------------------------------------------------------------+
+    | PECL :: propro                                                     |
+    +--------------------------------------------------------------------+
+    | Redistribution and use in source and binary forms, with or without |
+    | modification, are permitted provided that the conditions mentioned |
+    | in the accompanying LICENSE file are met.                          |
+    +--------------------------------------------------------------------+
+    | Copyright (c) 2013 Michael Wallner <mike@php.net>                  |
+    +--------------------------------------------------------------------+
+*/
+
+
+#ifdef HAVE_CONFIG_H
+#	include "config.h"
+#endif
+
+#include <php.h>
+#include <ext/standard/info.h>
+
+#include "php_propro_api.h"
+
+#define DEBUG_PROPRO 0
+
+static inline zval *get_referenced_zval(zval *ref)
+{
+	while (Z_ISREF_P(ref)) {
+		ref = Z_REFVAL_P(ref);
+	}
+	return ref;
+}
+
+php_property_proxy_t *php_property_proxy_init(zval *container, zend_string *member)
+{
+	php_property_proxy_t *proxy = ecalloc(1, sizeof(*proxy));
+
+	ZVAL_COPY(&proxy->container, get_referenced_zval(container));
+	proxy->member = zend_string_copy(member);
+
+	return proxy;
+}
+
+void php_property_proxy_free(php_property_proxy_t **proxy)
+{
+	if (*proxy) {
+		zval_ptr_dtor(&(*proxy)->container);
+		zend_string_release((*proxy)->member);
+		efree(*proxy);
+		*proxy = NULL;
+	}
+}
+
+static zend_class_entry *php_property_proxy_class_entry;
+static zend_object_handlers php_property_proxy_object_handlers;
+
+zend_class_entry *php_property_proxy_get_class_entry(void)
+{
+	return php_property_proxy_class_entry;
+}
+
+static inline php_property_proxy_object_t *get_propro(zval *object);
+static zval *get_parent_proxied_value(zval *object, zval *return_value);
+static zval *get_proxied_value(zval *object, zval *return_value);
+static zval *read_dimension(zval *object, zval *offset, int type, zval *return_value);
+static ZEND_RESULT_CODE cast_proxied_value(zval *object, zval *return_value, int type);
+static void write_dimension(zval *object, zval *offset, zval *value);
+static void set_proxied_value(zval *object, zval *value);
+
+#if DEBUG_PROPRO
+/* we do not really care about TS when debugging */
+static int level = 1;
+static const char space[] = "                               ";
+static const char *inoutstr[] = {"< return","="," > enter"};
+
+static void _walk(php_property_proxy_object_t *obj)
+{
+	if (obj) {
+		if (!Z_ISUNDEF(obj->parent)) {
+			_walk(get_propro(&obj->parent));
+		}
+		if (obj->proxy) {
+			fprintf(stderr, ".%s", obj->proxy->member->val);
+		}
+	}
+}
+
+static void debug_propro(int inout, const char *f,
+		php_property_proxy_object_t *obj, zval *offset, zval *value TSRMLS_DC)
+{
+	fprintf(stderr, "#PP %p %s %s %s ", obj, &space[sizeof(space)-level],
+			inoutstr[inout+1], f);
+
+	level += inout;
+
+	_walk(obj);
+
+	if (*f++=='d'
+	&&	*f++=='i'
+	&&	*f++=='m'
+	) {
+		char *offset_str = "[]";
+		zval *o = offset;
+
+		if (o) {
+			convert_to_string_ex(o);
+			offset_str = Z_STRVAL_P(o);
+		}
+
+		fprintf(stderr, ".%s", offset_str);
+
+		if (o && o != offset) {
+			zval_ptr_dtor(o);
+		}
+	}
+	if (value && !Z_ISUNDEF_P(value)) {
+		const char *t[] = {
+				"UNDEF",
+				"NULL",
+				"FALSE",
+				"TRUE",
+				"int",
+				"float",
+				"string",
+				"Array",
+				"Object",
+				"resource",
+				"reference",
+				"constant",
+				"constant AST",
+				"_BOOL",
+				"callable",
+				"indirect",
+				"---",
+				"pointer"
+		};
+		fprintf(stderr, " = (%s) ", t[Z_TYPE_P(value)&0xf]);
+		if (!Z_ISUNDEF_P(value) && Z_TYPE_P(value) != IS_INDIRECT) {
+			zend_print_flat_zval_r(value TSRMLS_CC);
+		}
+	}
+
+	fprintf(stderr, "\n");
+}
+#else
+#define debug_propro(l, f, obj, off, val)
+#endif
+
+php_property_proxy_object_t *php_property_proxy_object_new_ex(
+		zend_class_entry *ce, php_property_proxy_t *proxy)
+{
+	php_property_proxy_object_t *o;
+
+	if (!ce) {
+		ce = php_property_proxy_class_entry;
+	}
+
+	o = ecalloc(1, sizeof(*o) + sizeof(zval) * (ce->default_properties_count - 1));
+	zend_object_std_init(&o->zo, ce);
+	object_properties_init(&o->zo, ce);
+
+	o->proxy = proxy;
+	o->zo.handlers = &php_property_proxy_object_handlers;
+
+	debug_propro(0, "init", o, NULL, NULL);
+
+	return o;
+}
+
+zend_object *php_property_proxy_object_new(zend_class_entry *ce)
+{
+	return &php_property_proxy_object_new_ex(ce, NULL)->zo;
+}
+
+static void destroy_obj(zend_object *object)
+{
+	php_property_proxy_object_t *o = PHP_PROPRO_PTR(object);
+
+	debug_propro(0, "dtor", o, NULL, NULL);
+
+	if (o->proxy) {
+		php_property_proxy_free(&o->proxy);
+	}
+	if (!Z_ISUNDEF(o->parent)) {
+		zval_ptr_dtor(&o->parent);
+		ZVAL_UNDEF(&o->parent);
+	}
+	zend_object_std_dtor(object);
+}
+
+static inline php_property_proxy_object_t *get_propro(zval *object)
+{
+	object = get_referenced_zval(object);
+	switch (Z_TYPE_P(object)) {
+	case IS_OBJECT:
+		break;
+
+	EMPTY_SWITCH_DEFAULT_CASE();
+	}
+	return PHP_PROPRO_PTR(Z_OBJ_P(object));
+}
+
+static inline zend_bool got_value(zval *container, zval *value)
+{
+	zval identical;
+
+	if (!Z_ISUNDEF_P(value)) {
+		if (SUCCESS == is_identical_function(&identical, value, container)) {
+			if (Z_TYPE(identical) != IS_TRUE) {
+				return 1;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static zval *get_parent_proxied_value(zval *object, zval *return_value)
+{
+	php_property_proxy_object_t *obj;
+
+	obj = get_propro(object);
+	debug_propro(1, "parent_get", obj, NULL, NULL);
+
+	if (obj->proxy) {
+		if (!Z_ISUNDEF(obj->parent)) {
+			get_proxied_value(&obj->parent, return_value);
+		}
+	}
+
+	debug_propro(-1, "parent_get", obj, NULL, return_value);
+
+	return return_value;
+}
+
+static zval *get_proxied_value(zval *object, zval *return_value)
+{
+	zval *hash_value, *ref, prop_tmp;
+	php_property_proxy_object_t *obj;
+
+	obj = get_propro(object);
+	debug_propro(1, "get", obj, NULL, NULL);
+
+	if (obj->proxy) {
+		if (!Z_ISUNDEF(obj->parent)) {
+			zval parent_value;
+
+			ZVAL_UNDEF(&parent_value);
+			get_parent_proxied_value(object, &parent_value);
+
+			if (got_value(&obj->proxy->container, &parent_value)) {
+				zval_ptr_dtor(&obj->proxy->container);
+				ZVAL_COPY(&obj->proxy->container, &parent_value);
+			}
+		}
+
+		ref = get_referenced_zval(&obj->proxy->container);
+
+		switch (Z_TYPE_P(ref)) {
+		case IS_OBJECT:
+			RETVAL_ZVAL(zend_read_property(Z_OBJCE_P(ref), ref,
+					obj->proxy->member->val, obj->proxy->member->len, 0, &prop_tmp),
+					0, 0);
+			break;
+
+		case IS_ARRAY:
+			hash_value = zend_symtable_find(Z_ARRVAL_P(ref), obj->proxy->member);
+
+			if (hash_value) {
+				RETVAL_ZVAL(hash_value, 0, 0);
+			}
+			break;
+		}
+	}
+
+	debug_propro(-1, "get", obj, NULL, return_value);
+
+	return return_value;
+}
+
+static ZEND_RESULT_CODE cast_proxied_value(zval *object, zval *return_value,
+		int type)
+{
+	get_proxied_value(object, return_value);
+
+	debug_propro(0, "cast", get_propro(object), NULL, return_value);
+
+	if (!Z_ISUNDEF_P(return_value)) {
+		convert_to_explicit_type_ex(return_value, type);
+		return SUCCESS;
+	}
+
+	return FAILURE;
+}
+
+static void set_proxied_value(zval *object, zval *value)
+{
+	php_property_proxy_object_t *obj;
+	zval *ref;
+
+	obj = get_propro(object);
+	debug_propro(1, "set", obj, NULL, value TSRMLS_CC);
+
+	if (obj->proxy) {
+		if (!Z_ISUNDEF(obj->parent)) {
+			zval parent_value;
+
+			ZVAL_UNDEF(&parent_value);
+			get_parent_proxied_value(object, &parent_value);
+
+			if (got_value(&obj->proxy->container, &parent_value)) {
+				zval_ptr_dtor(&obj->proxy->container);
+				ZVAL_COPY(&obj->proxy->container, &parent_value);
+			}
+		}
+
+		ref = get_referenced_zval(&obj->proxy->container);
+
+		switch (Z_TYPE_P(ref)) {
+		case IS_OBJECT:
+			zend_update_property(Z_OBJCE_P(ref), ref, obj->proxy->member->val,
+					obj->proxy->member->len, value);
+			break;
+
+		default:
+			convert_to_array(ref);
+			/* no break */
+
+		case IS_ARRAY:
+			Z_TRY_ADDREF_P(value);
+			zend_symtable_update(Z_ARRVAL_P(ref), obj->proxy->member, value);
+			break;
+		}
+
+		if (!Z_ISUNDEF(obj->parent)) {
+			set_proxied_value(&obj->parent, &obj->proxy->container);
+		}
+	}
+
+	debug_propro(-1, "set", obj, NULL, NULL);
+}
+
+static zval *read_dimension(zval *object, zval *offset, int type, zval *return_value)
+{
+	zval proxied_value;
+	zend_string *member = offset ? zval_get_string(offset) : NULL;
+
+	debug_propro(1, type == BP_VAR_R ? "dim_read" : "dim_read_ref",
+			get_propro(object), offset, NULL);
+
+	ZVAL_UNDEF(&proxied_value);
+	get_proxied_value(object, &proxied_value);
+
+	if (BP_VAR_R == type && member && !Z_ISUNDEF(proxied_value)) {
+		if (Z_TYPE(proxied_value) == IS_ARRAY) {
+			zval *hash_value = zend_symtable_find(Z_ARRVAL(proxied_value),
+					member);
+
+			if (hash_value) {
+				RETVAL_ZVAL(hash_value, 1, 0);
+			}
+		}
+	} else {
+		php_property_proxy_t *proxy;
+		php_property_proxy_object_t *proxy_obj;
+
+		if (!Z_ISUNDEF(proxied_value)) {
+			convert_to_array(&proxied_value);
+			Z_ADDREF(proxied_value);
+		} else {
+			array_init(&proxied_value);
+			set_proxied_value(object, &proxied_value);
+		}
+
+		if (!member) {
+			member = zend_long_to_str(zend_hash_next_free_element(
+					Z_ARRVAL(proxied_value)));
+		}
+
+		proxy = php_property_proxy_init(&proxied_value, member);
+		zval_ptr_dtor(&proxied_value);
+
+		proxy_obj = php_property_proxy_object_new_ex(NULL, proxy);
+		ZVAL_COPY(&proxy_obj->parent, object);
+		RETVAL_OBJ(&proxy_obj->zo);
+	}
+
+	if (member) {
+		zend_string_release(member);
+	}
+
+	debug_propro(-1, type == BP_VAR_R ? "dim_read" : "dim_read_ref",
+			get_propro(object), offset, return_value);
+
+	return return_value;
+}
+
+static int has_dimension(zval *object, zval *offset, int check_empty)
+{
+	zval proxied_value;
+	int exists = 0;
+
+	debug_propro(1, "dim_exists", get_propro(object), offset, NULL);
+
+	ZVAL_UNDEF(&proxied_value);
+	get_proxied_value(object, &proxied_value);
+	if (Z_ISUNDEF(proxied_value)) {
+		exists = 0;
+	} else {
+		zend_string *zs = zval_get_string(offset);
+
+		if (Z_TYPE(proxied_value) == IS_ARRAY) {
+			zval *zentry = zend_symtable_find(Z_ARRVAL(proxied_value), zs);
+
+			if (!zentry) {
+				exists = 0;
+			} else {
+				if (check_empty) {
+					exists = !Z_ISNULL_P(zentry);
+				} else {
+					exists = 1;
+				}
+			}
+		}
+
+		zend_string_release(zs);
+	}
+
+	debug_propro(-1, "dim_exists", get_propro(object), offset, NULL);
+
+	return exists;
+}
+
+static void write_dimension(zval *object, zval *offset, zval *value)
+{
+	zval proxied_value;
+
+	debug_propro(1, "dim_write", get_propro(object), offset, value);
+
+	ZVAL_UNDEF(&proxied_value);
+	get_proxied_value(object, &proxied_value);
+
+	if (!Z_ISUNDEF(proxied_value)) {
+		if (Z_TYPE(proxied_value) == IS_ARRAY) {
+			Z_ADDREF(proxied_value);
+		} else {
+			convert_to_array(&proxied_value);
+		}
+	} else {
+		array_init(&proxied_value);
+	}
+
+	SEPARATE_ZVAL(value);
+	Z_TRY_ADDREF_P(value);
+
+	if (offset) {
+		zend_string *zs = zval_get_string(offset);
+		zend_symtable_update(Z_ARRVAL(proxied_value), zs, value);
+		zend_string_release(zs);
+	} else {
+		zend_hash_next_index_insert(Z_ARRVAL(proxied_value), value);
+	}
+
+	set_proxied_value(object, &proxied_value);
+
+	debug_propro(-1, "dim_write", get_propro(object), offset, &proxied_value);
+
+	zval_ptr_dtor(&proxied_value);
+}
+
+static void unset_dimension(zval *object, zval *offset)
+{
+	zval proxied_value;
+
+	debug_propro(1, "dim_unset", get_propro(object), offset, NULL);
+
+	ZVAL_UNDEF(&proxied_value);
+	get_proxied_value(object, &proxied_value);
+
+	if (Z_TYPE(proxied_value) == IS_ARRAY) {
+		zval *o = offset;
+		ZEND_RESULT_CODE rv;
+
+		convert_to_string_ex(o);
+		rv = zend_symtable_del(Z_ARRVAL(proxied_value), Z_STR_P(o));
+		if (SUCCESS == rv) {
+			set_proxied_value(object, &proxied_value);
+		}
+
+		if (o != offset) {
+			zval_ptr_dtor(o);
+		}
+	}
+
+	debug_propro(-1, "dim_unset", get_propro(object), offset, &proxied_value);
+}
+
+ZEND_BEGIN_ARG_INFO_EX(ai_propro_construct, 0, 0, 2)
+	ZEND_ARG_INFO(1, object)
+	ZEND_ARG_INFO(0, member)
+	ZEND_ARG_OBJ_INFO(0, parent, php\\PropertyProxy, 1)
+ZEND_END_ARG_INFO();
+static PHP_METHOD(propro, __construct) {
+	zend_error_handling zeh;
+	zval *container, *parent = NULL;
+	zend_string *member;
+
+	zend_replace_error_handling(EH_THROW, NULL, &zeh);
+	if (SUCCESS == zend_parse_parameters(ZEND_NUM_ARGS(), "zS|O!",
+			&container, &member, &parent,
+			php_property_proxy_class_entry)) {
+		php_property_proxy_object_t *obj;
+		zval *ref = get_referenced_zval(container);
+
+		switch (Z_TYPE_P(ref)) {
+		case IS_OBJECT:
+		case IS_ARRAY:
+			break;
+		default:
+			convert_to_array(ref);
+		}
+		obj = get_propro(getThis());
+		obj->proxy = php_property_proxy_init(container, member);
+		if (parent) {
+			ZVAL_COPY(&obj->parent, parent);
+		}
+	}
+	zend_restore_error_handling(&zeh);
+}
+
+static const zend_function_entry php_property_proxy_method_entry[] = {
+	PHP_ME(propro, __construct, ai_propro_construct, ZEND_ACC_PUBLIC)
+	{0}
+};
+
+static PHP_MINIT_FUNCTION(propro)
+{
+	zend_class_entry ce = {0};
+
+	INIT_NS_CLASS_ENTRY(ce, "php", "PropertyProxy",
+			php_property_proxy_method_entry);
+	php_property_proxy_class_entry = zend_register_internal_class(&ce);
+	php_property_proxy_class_entry->create_object =	php_property_proxy_object_new;
+	php_property_proxy_class_entry->ce_flags |= ZEND_ACC_FINAL;
+
+	memcpy(&php_property_proxy_object_handlers, zend_get_std_object_handlers(),
+			sizeof(zend_object_handlers));
+	php_property_proxy_object_handlers.offset = XtOffsetOf(php_property_proxy_object_t, zo);
+	php_property_proxy_object_handlers.free_obj = destroy_obj;
+	php_property_proxy_object_handlers.set = set_proxied_value;
+	php_property_proxy_object_handlers.get = get_proxied_value;
+	php_property_proxy_object_handlers.cast_object = cast_proxied_value;
+	php_property_proxy_object_handlers.read_dimension = read_dimension;
+	php_property_proxy_object_handlers.write_dimension = write_dimension;
+	php_property_proxy_object_handlers.has_dimension = has_dimension;
+	php_property_proxy_object_handlers.unset_dimension = unset_dimension;
+
+	return SUCCESS;
+}
+
+PHP_MINFO_FUNCTION(propro)
+{
+	php_info_print_table_start();
+	php_info_print_table_header(2, "Property proxy support", "enabled");
+	php_info_print_table_row(2, "Extension version", PHP_PROPRO_VERSION);
+	php_info_print_table_end();
+}
+
+static const zend_function_entry propro_functions[] = {
+	{0}
+};
+
+zend_module_entry propro_module_entry = {
+	STANDARD_MODULE_HEADER,
+	"propro",
+	propro_functions,
+	PHP_MINIT(propro),
+	NULL,
+	NULL,
+	NULL,
+	PHP_MINFO(propro),
+	PHP_PROPRO_VERSION,
+	STANDARD_MODULE_PROPERTIES
+};
+
+#ifdef COMPILE_DL_PROPRO
+ZEND_GET_MODULE(propro)
+#endif
+
+
+/*
+ * Local variables:
+ * tab-width: 4
+ * c-basic-offset: 4
+ * End:
+ * vim600: noet sw=4 ts=4 fdm=marker
+ * vim<600: noet sw=4 ts=4
+ */