MadButterfly: nodejs/image

annotate nodejs/image_ldr.cc @ 643:a65720721c60

Fix issue of exception of internal field. img_ldr is a function to return a new img_ldr, not a constructor as in previous implementation. This changeset fix semantic error on xnjsmb_img_ldr_new().

author	Thinker K.F. Li <thinker@branda.to>
date	Wed, 28 Jul 2010 08:31:15 +0800
parents	9016e7e70f7d
children	b346e4699e55

rev	line source
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	1 /*! \file
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	2 * This file implements Javascript binding for img_ldr_t of MadButterfly.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	3 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	4 #include <v8.h>
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	5
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	6 extern "C" {
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	7 #include "mb.h"
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	8 }
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	9
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	10 #include "mbfly_njs.h"
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	11
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	12 using namespace v8;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	13
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	14 #ifndef ASSERT
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	15 #define ASSERT(x)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	16 #endif
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	17
640 9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	18 /*! \defgroup img_ldr_js Javascript binding for image loader.
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	19 *
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	20 * @{
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	21 */
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	22
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	23 static Persistent<ObjectTemplate> img_data_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	24
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	25 /*! \brief load() method of img_ldr Javascript objects.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	26 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	27 static Handle<Value>
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	28 xnjsmb_img_ldr_load(const Arguments &args) {
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	29 HandleScope scope;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	30 int argc = args.Length();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	31 Handle<Object> self = args.This();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	32 char *img_id;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	33 mb_img_ldr_t *img_ldr;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	34 mb_img_data_t *img_data;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	35 Handle<Object> img_data_obj;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	36
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	37 if(argc != 1)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	38 THROW("Invalid number of arguments (!= 1)");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	39 if(!args[0]->IsString())
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	40 THROW("Invalid argument type");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	41
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	42 String::Utf8Value img_id_utf8(args[0]->ToString());
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	43 img_id = *img_id_utf8;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	44 img_ldr = (mb_img_ldr_t *)UNWRAP(self);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	45
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	46 img_data_obj = img_data_temp->NewInstance();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	47 ASSERT(img_data_obj);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	48
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	49 img_data = MB_IMG_LDR_LOAD(img_ldr, img_id);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	50 if(img_data == NULL)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	51 THROW("Can not load an image");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	52 WRAP(img_data_obj, img_data);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	53
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	54 scope.Close(img_data_obj);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	55
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	56 return img_data_obj;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	57 }
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	58
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	59 /*! \brief Constructor function of img_ldr Javascript objects.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	60 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	61 static Handle<Value>
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	62 xnjsmb_img_ldr(const Arguments &args) {
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	63 HandleScope scope;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	64 int argc = args.Length();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	65 Handle<Object> self = args.This();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	66 char *path;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	67 mb_img_ldr_t *img_ldr;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	68
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	69 if(argc != 1)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	70 THROW("Invalid number of arguments (!= 1)");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	71 if(!args[0]->IsString())
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	72 THROW("Invalid argument type");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	73
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	74 String::Utf8Value pathutf8(args[0]->ToString());
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	75 path = *pathutf8;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	76
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	77 img_ldr = simple_mb_img_ldr_new(path);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	78 if(img_ldr == NULL)
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	79 THROW("Can not create an image loader");
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	80 WRAP(self, img_ldr);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	81
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	82 return Null();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	83 }
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	84
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	85 static Persistent<FunctionTemplate> xnjsmb_img_ldr_temp;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	86
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	87 static Handle<Value>
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	88 xnjsmb_img_ldr_new(const Arguments &args) {
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	89 HandleScope scope;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	90 int argc = args.Length();
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	91 Handle<Value> il_args[1];
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	92 Handle<Object> img_ldr;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	93 Handle<Function> func;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	94
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	95 if(argc != 1)
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	96 THROW("Invalid number of arguments (!= 1)");
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	97 if(!args[0]->IsString())
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	98 THROW("Invalid argument type");
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	99
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	100 il_args[0] = args[0];
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	101 func = xnjsmb_img_ldr_temp->GetFunction();
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	102 img_ldr = func->NewInstance(1, il_args);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	103
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	104 scope.Close(img_ldr);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	105 return img_ldr;
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	106 }
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	107
640 9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	108 /* @} */
9016e7e70f7d Group binding for image loader with Doxygen syntax Thinker K.F. Li <thinker@branda.to> parents: 639 diff changeset	109
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	110 /*! \brief Initialize image loader.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	111 *
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	112 * This function is called by init() in mbfly_njs.cc when the module
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	113 * being loaded.
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	114 */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	115 void
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	116 xnjsmb_img_ldr_init_mb_rt_temp(Handle<Object> rt_temp) {
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	117 HandleScope scope;
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	118 Handle<FunctionTemplate> img_ldr_temp;
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	119 Handle<FunctionTemplate> img_ldr_new_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	120 Handle<ObjectTemplate> ldr_inst_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	121 Handle<ObjectTemplate> ldr_proto_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	122 Handle<FunctionTemplate> img_ldr_load_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	123 Handle<ObjectTemplate> _img_data_temp;
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	124
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	125 /* Setup object template for img_data_t object for Javascript */
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	126 _img_data_temp = ObjectTemplate::New();
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	127 _img_data_temp->SetInternalFieldCount(1);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	128 img_data_temp = Persistent<ObjectTemplate>::New(_img_data_temp);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	129
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	130 /* Setup img_ldr class */
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	131 img_ldr_temp = FunctionTemplate::New(xnjsmb_img_ldr);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	132 img_ldr_temp->SetClassName(String::New("img_ldr"));
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	133 ldr_inst_temp = img_ldr_temp->InstanceTemplate();
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	134 ldr_inst_temp->SetInternalFieldCount(1);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	135
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	136 /* Set method load() for img_ldr */
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	137 ldr_proto_temp = img_ldr_temp->PrototypeTemplate();
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	138 img_ldr_load_temp = FunctionTemplate::New(xnjsmb_img_ldr_load);
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	139 SET(ldr_proto_temp, "load", img_ldr_load_temp);
643 a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	140
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	141 xnjsmb_img_ldr_temp = Persistent<FunctionTemplate>::New(img_ldr_temp);
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	142
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	143 /* Initialize img_ldr_new function */
a65720721c60 Fix issue of exception of internal field. Thinker K.F. Li <thinker@branda.to> parents: 640 diff changeset	144 img_ldr_new_temp = FunctionTemplate::New(xnjsmb_img_ldr_new);
639 dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	145 SET(rt_temp, "img_ldr_new", img_ldr_new_temp->GetFunction());
dc32c1c140ae First compilable image loader binding for Javascript Thinker K.F. Li <thinker@branda.to> parents: diff changeset	146 }

Mercurial > MadButterfly

annotate nodejs/image_ldr.cc @ 643:a65720721c60