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| version 1.2, 2009/07/26 05:41:54 | version 1.40, 2016/03/31 21:46:20 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: @b reflection parser class. | Parser: @b reflection parser class. |
| Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2015 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| static const char * const IDENT_REFLECTION_C="$Date$"; | |
| #include "pa_vmethod_frame.h" | #include "pa_vmethod_frame.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_vbool.h" | #include "pa_vbool.h" |
| const char* const METHOD_TYPE_NATIVE="native"; | volatile const char * IDENT_REFLECTION_C="$Id$"; |
| const char* const METHOD_TYPE_PARSER="parser"; | |
| const char* const METHOD_CALL_TYPE_STATIC="static"; | static const String class_type_methoded("methoded"); |
| const char* const METHOD_CALL_TYPE_DYNAMIC="dynamic"; | |
| const char* const METHOD_CALL_TYPE_ANY="any"; | |
| const char* const METHOD_MIN_PARAMS="min_params"; | static const String method_type_native("native"); |
| const char* const METHOD_MAX_PARAMS="max_params"; | static const String method_type_parser("parser"); |
| static const String method_type_native(METHOD_TYPE_NATIVE); | static const String method_call_type("call_type"); |
| static const String method_type_parser(METHOD_TYPE_PARSER); | static const String method_inherited("inherited"); |
| static const String method_overridden("overridden"); | |
| static const String method_call_type_static("static"); | |
| static const String method_call_type_dynamic("dynamic"); | |
| static const String method_call_type_static(METHOD_CALL_TYPE_STATIC); | static const String method_min_params("min_params"); |
| static const String method_call_type_dynamic(METHOD_CALL_TYPE_DYNAMIC); | static const String method_max_params("max_params"); |
| static const String method_call_type_any(METHOD_CALL_TYPE_ANY); | static const String method_extra_param("extra_param"); |
| static const String method_min_params(METHOD_MIN_PARAMS); | static const String def_class("class"); |
| static const String method_max_params(METHOD_MAX_PARAMS); | |
| // class | // class |
| class MReflection: public Methoded { | class MReflection: public Methoded { |
| public: | public: |
| MReflection(); | MReflection(); |
| public: // Methoded | |
| bool used_directly() { return true; } | |
| }; | }; |
| // global variable | // global variable |
| DECLARE_CLASS_VAR(reflection, new MReflection, 0); | DECLARE_CLASS_VAR(reflection, new MReflection); |
| // methods | // methods |
| static void _create(Request& r, MethodParams& params) { | static void _create(Request& r, MethodParams& params) { |
| const String& class_name=params.as_string(0, "class_name must be string"); | const String& class_name=params.as_string(0, "class_name must be string"); |
| Value* class_value=r.classes().get(class_name); | Value* class_value=r.get_class(class_name); |
| if(!class_value) | if(!class_value) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, |
| Line 57 static void _create(Request& r, MethodPa | Line 52 static void _create(Request& r, MethodPa |
| "class is undefined"); | "class is undefined"); |
| const String& constructor_name=params.as_string(1, "constructor_name must be string"); | const String& constructor_name=params.as_string(1, "constructor_name must be string"); |
| Value* constructor_value=class_value->get_element(constructor_name, *class_value, true); | Value* constructor_value=class_value->get_element(constructor_name); |
| if(!constructor_value || !constructor_value->get_junction() || constructor_value->get_junction()->self.get_class()!=class_value) | if(!constructor_value || !constructor_value->get_junction()) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, |
| &constructor_name, | &constructor_name, |
| "constructor must be declared in class '%s'", | "constructor must be declared in class '%s'", |
| Line 90 static void _create(Request& r, MethodPa | Line 85 static void _create(Request& r, MethodPa |
| max_params_count=method->max_numbered_params_count; | max_params_count=method->max_numbered_params_count; |
| } else { | } else { |
| max_params_count=method->params_names->count(); | max_params_count=method->params_names?method->params_names->count():0; |
| } | } |
| if(nparams>max_params_count) | if(nparams>max_params_count) |
| Line 102 static void _create(Request& r, MethodPa | Line 97 static void _create(Request& r, MethodPa |
| max_params_count, | max_params_count, |
| nparams); | nparams); |
| VMethodFrame frame(*junction, r.get_method_frame()); | Value &object = r.construct(*class_value, *method); |
| VConstructorFrame frame(*method, r.get_method_frame(), object); | |
| Value* v[100]; | Value* v[100]; |
| if(nparams>0){ | if(nparams>0){ |
| for(int i=0; i<nparams; i++) | for(int i=0; i<nparams; i++) |
| v[i]=&r.process_to_value(params[i+2]); | v[i]=&r.process_to_value(params[i+2]); |
| Line 112 static void _create(Request& r, MethodPa | Line 108 static void _create(Request& r, MethodPa |
| } else { | } else { |
| frame.empty_params(); | frame.empty_params(); |
| } | } |
| r.op_call(frame, true/*constructing*/); | r.op_call(frame); |
| object.enable_default_setter(); | |
| r.write_pass_lang(frame.result()); | r.write_pass_lang(frame.result()); |
| } | } |
| // @todo: something wring with native classes (it returns stateless_class) | static void store_vlass_info( |
| static void _class(Request& r, MethodParams& params) { | HashStringValue::key_type key, |
| if(Value* lclass=params[0].get_last_derived_class()) | HashStringValue::value_type value, |
| r.write_no_lang(*lclass); | HashStringValue* result |
| ){ | |
| Value* v; | |
| if(value->get_class()) | |
| v=new VString(class_type_methoded); | |
| else | else |
| throw Exception(PARSER_RUNTIME, | v=VVoid::get(); |
| 0, | result->put(key, v); |
| "class is undefined"); | } |
| static void _classes(Request& r, MethodParams&) { | |
| VHash& result=*new VHash; | |
| r.classes().for_each(store_vlass_info, result.get_hash()); | |
| r.write_no_lang(result); | |
| } | |
| static Value* get_class(Value* value){ | |
| if(VStateless_class* result=value->get_class()) | |
| return result; | |
| else | |
| // classes with fields only, like env & console | |
| return value; | |
| } | |
| static const String* get_class_name(Value* value){ | |
| if(VStateless_class* lclass=value->get_class()) | |
| return &lclass->name(); | |
| else | |
| // classes with fields only, like env & console | |
| return new String(value->type()); | |
| } | |
| static void _class(Request& r, MethodParams& params) { | |
| r.write_no_lang(*get_class(¶ms[0])); | |
| } | } |
| static void _class_name(Request& r, MethodParams& params) { | static void _class_name(Request& r, MethodParams& params) { |
| r.write_no_lang(String(params[0].type())); | r.write_no_lang(*get_class_name(¶ms[0])); |
| } | } |
| static void _class_by_name(Request& r, MethodParams& params) { | |
| const String& class_name=params.as_string(0, "class_name must be string"); | |
| Value* class_value=r.get_class(class_name); | |
| if(!class_value) | |
| throw Exception(PARSER_RUNTIME, &class_name, "class is undefined"); | |
| r.write_no_lang(*class_value); | |
| } | |
| static void _base(Request& r, MethodParams& params) { | static void _base(Request& r, MethodParams& params) { |
| if(Value* lclass=params[0].get_class()) | if(VStateless_class* lclass=params[0].get_class()) |
| if(Value* base=lclass->base()) | if(Value* base=lclass->base()){ |
| r.write_no_lang(*lclass->base()); | r.write_no_lang(*get_class(base)); |
| else | return; |
| r.write_no_lang(*VVoid::get()); | } |
| else | |
| throw Exception(PARSER_RUNTIME, | // classes with fields only, like env & console or without base |
| 0, | r.write_no_lang(*VVoid::get()); |
| "class is undefined"); | |
| } | } |
| static void _base_name(Request& r, MethodParams& params) { | static void _base_name(Request& r, MethodParams& params) { |
| if(Value* lclass=params[0].get_class()) | if(VStateless_class* lclass=params[0].get_class()) |
| if(Value* base=lclass->base()) | if(Value* base=lclass->base()) |
| r.write_no_lang(String(base->type())); | r.write_no_lang(*get_class_name(base)); |
| } | } |
| static void store_method_info( | static void store_method_info( |
| HashString<Method*>::key_type key, | HashStringMethod::key_type key, |
| HashString<Method*>::value_type method, | HashStringMethod::value_type method, |
| HashStringValue* result | HashStringValue* result |
| ) { | ) { |
| result->put(key, new VString(method->native_code?method_type_native:method_type_parser)); | result->put(key, new VString(method->native_code?method_type_native:method_type_parser)); |
| } | } |
| static void _def(Request& r, MethodParams& params) { | |
| const String& type=params.as_string(0, "type must be string"); | |
| if(type == def_class) { | |
| const String& name=params.as_string(1, "name must be string"); | |
| r.write_no_lang(VBool::get(r.get_class(name)!=0)); | |
| } else { | |
| throw Exception(PARSER_RUNTIME, &type, "is invalid type, must be '%s'", def_class.cstr()); | |
| } | |
| } | |
| static void _methods(Request& r, MethodParams& params) { | static void _methods(Request& r, MethodParams& params) { |
| const String& class_name=params.as_string(0, "class_name must be string"); | const String& class_name=params.as_string(0, "class_name must be string"); |
| Value* class_value=r.classes().get(class_name); | Value* class_value=r.get_class(class_name); |
| if(!class_value) | if(!class_value) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, |
| &class_name, | &class_name, |
| "class is undefined"); | "class is undefined"); |
| VHash& result=*new VHash; | VHash& result=*new VHash; |
| if(VStateless_class* lclass=class_value->get_class()){ | if(VStateless_class* lclass=class_value->get_class()) { |
| HashString<Method*> methods=lclass->get_methods(); | HashStringMethod methods=lclass->get_methods(); |
| methods.for_each(store_method_info, result.get_hash()); | methods.for_each(store_method_info, result.get_hash()); |
| /* | |
| } else { | } else { |
| // exception? | // class which does not have methods (env, console, etc) |
| throw Exception(PARSER_RUNTIME, | |
| &class_name, | |
| "class does not have methods"); | |
| */ | |
| } | } |
| r.write_no_lang(result); | r.write_no_lang(result); |
| } | } |
| static void _method(Request& r, MethodParams& params) { | |
| Value& o=params.as_no_junction(0, "first param must be object or class, not junction"); | |
| const String& name=params.as_string(1, "method name must be string"); | |
| if(VStateless_class* lclass=o.get_class()) { | |
| if(Method* method=lclass->get_method(name)) | |
| r.write_no_lang(*method->get_vjunction(o)); | |
| } else { | |
| // class which does not have methods (env, console, etc) | |
| } | |
| } | |
| static void _fields(Request& r, MethodParams& params) { | |
| Value& o=params.as_no_junction(0, "param must be object or class, not junction"); | |
| if(HashStringValue* fields=o.get_fields()) { | |
| VHash& result=*new VHash(*fields); | |
| r.write_no_lang(result); | |
| } else | |
| r.write_no_lang(*new VHash()); | |
| } | |
| static void _field(Request& r, MethodParams& params) { | |
| Value& o=params.as_no_junction(0, "first param must be object or class, not junction"); | |
| const String& name=params.as_string(1, "field name must be string"); | |
| if(HashStringValue* fields=o.get_fields()) | |
| if(Value* value=fields->get(name)) | |
| r.write_no_lang(*value); | |
| } | |
| static void _method_params(Request& r, MethodParams& params) { | static void _method_info(Request& r, MethodParams& params) { |
| const String& class_name=params.as_string(0, "class_name must be string"); | const String& class_name=params.as_string(0, "class_name must be string"); |
| Value* class_value=r.classes().get(class_name); | Value* class_value=r.get_class(class_name); |
| if(!class_value) | if(!class_value) |
| throw Exception(PARSER_RUNTIME, | throw Exception(PARSER_RUNTIME, |
| &class_name, | &class_name, |
| Line 199 static void _method_params(Request& r, M | Line 267 static void _method_params(Request& r, M |
| &class_name, | &class_name, |
| "class does not have methods"); | "class does not have methods"); |
| const String& method_name=params.as_string(1, "method_name must be string"); | const String& method_name=params.as_string(1, "method_name must be string"); |
| Method* method=lclass->get_method(method_name); | Method* method=lclass->get_method(method_name); |
| if(!method) | if(!method) |
| Line 210 static void _method_params(Request& r, M | Line 277 static void _method_params(Request& r, M |
| VHash& result=*new VHash; | VHash& result=*new VHash; |
| HashStringValue* hash=result.get_hash(); | HashStringValue* hash=result.get_hash(); |
| VStateless_class* c=lclass; | |
| Method* base_method; | |
| if(c->base() && (base_method=c->base()->get_method(method_name))){ | |
| c=c->base()->get_class(); | |
| while(c->base() && base_method==c->base()->get_method(method_name)) | |
| c=c->base()->get_class(); | |
| hash->put((base_method==method) ? method_inherited : method_overridden, new VString(c->name())); | |
| } | |
| Value* call_type=0; | |
| switch(method->call_type){ | |
| case Method::CT_DYNAMIC: | |
| call_type=new VString(method_call_type_dynamic); | |
| break; | |
| case Method::CT_STATIC: | |
| call_type=new VString(method_call_type_static); | |
| break; | |
| case Method::CT_ANY: | |
| break; | |
| } | |
| if(call_type) | |
| hash->put(method_call_type, call_type); | |
| if(method->native_code){ | if(method->native_code){ |
| // native code | // native code |
| hash->put(method_min_params, new VInt(method->min_numbered_params_count)); | hash->put(method_min_params, new VInt(method->min_numbered_params_count)); |
| hash->put(method_max_params, new VInt(method->max_numbered_params_count)); | hash->put(method_max_params, new VInt(method->max_numbered_params_count)); |
| const String* call_type; | |
| switch(method->call_type){ | |
| case Method::CT_DYNAMIC: | |
| call_type=&method_call_type_dynamic; | |
| break; | |
| case Method::CT_STATIC: | |
| call_type=&method_call_type_static; | |
| break; | |
| default: | |
| call_type=&method_call_type_any; | |
| } | |
| hash->put(String("call_type"), new VString(*call_type)); | |
| } else { | } else { |
| // parser code | // parser code |
| const String* filespec = r.get_method_filename(method); | |
| if( filespec ) | |
| hash->put("file", new VString(*filespec)); | |
| hash->put(method_max_params, new VInt(method->params_names ? method->params_names->count() : 0)); | |
| if(method->params_names) | if(method->params_names) |
| for(size_t i=0; i<method->params_names->count(); i++) | for(size_t i=0; i<method->params_names->count(); i++) |
| hash->put(String::Body::Format(i), new VString(*method->params_names->get(i))); | hash->put(String::Body::Format(i), new VString(*method->params_names->get(i))); |
| if(method->extra_params) | |
| hash->put(method_extra_param, new VString(*method->extra_params)); | |
| } | } |
| r.write_no_lang(result); | r.write_no_lang(result); |
| } | } |
| static void _dynamical(Request& r, MethodParams& params) { | |
| if(params.count()){ | |
| r.write_no_lang(VBool::get(params[0].get_class() != ¶ms[0])); | |
| } else { | |
| VMethodFrame* caller=r.get_method_frame()->caller(); | |
| r.write_no_lang(VBool::get(caller && caller->get_class() != &caller->self())); | |
| } | |
| } | |
| static void _is(Request& r, MethodParams& params) { | |
| const String& name=params.as_string(0, "element name must be string"); | |
| const String& type=params.as_string(1, "class name must be string"); | |
| Value *context=params.count()==3 ? &(params.as_no_junction(2, "context must not be code")) : r.get_method_frame()->caller(); | |
| Value *value=context ? context->get_element(name) : 0; | |
| if(value) { | |
| if(type == "code" || type == "method") { | |
| Junction *junction=value->get_junction(); | |
| r.write_no_lang(VBool::get(junction && ((junction->code==0) ^ (type == "code"))) ); | |
| } else { | |
| r.write_no_lang(VBool::get( value->is(type.cstr()) )); | |
| } | |
| } else | |
| r.write_no_lang(VBool::get(type == "void")); | |
| } | |
| static void _copy(Request& r, MethodParams& params) { | |
| HashStringValue* src=params.as_no_junction(0, "source must not be code").get_hash(); | |
| if(src==NULL) | |
| throw Exception(PARSER_RUNTIME, 0, "source must have hash representation"); | |
| Value& dst=params.as_no_junction(1, "destination must not be code"); | |
| for(HashStringValue::Iterator i(*src); i; i.next()) | |
| r.put_element(dst, *new String(i.key(), String::L_TAINTED), i.value()); | |
| } | |
| static void _uid(Request& r, MethodParams& params) { | |
| Value& obj=params.as_no_junction(0, "object must not be code"); | |
| char local_buf[MAX_NUMBER]; | |
| int size=snprintf(local_buf, sizeof(local_buf), "%p", &obj); | |
| r.write_pass_lang(*new String(String::C(pa_strdup(local_buf, (size_t)size), size))); | |
| } | |
| static void _delete(Request&, MethodParams& params) { | |
| const String& key=params.as_string(1, "field name must be string"); | |
| if(HashStringValue* fields=params[0].get_fields()){ | |
| fields->remove(key); | |
| } | |
| } | |
| // constructor | // constructor |
| MReflection::MReflection(): Methoded("reflection") { | MReflection::MReflection(): Methoded("reflection") { |
| // ^reflection:create[class_name;constructor_name[;param1[;param2[;...]]]] | // ^reflection:create[class_name;constructor_name[;param1[;param2[;...]]]] |
| add_native_method("create", Method::CT_STATIC, _create, 2, 102); | add_native_method("create", Method::CT_STATIC, _create, 2, 102); |
| // ^reflection:classes[] | |
| add_native_method("classes", Method::CT_STATIC, _classes, 0, 0); | |
| // ^reflection:class[object] | // ^reflection:class[object] |
| add_native_method("class", Method::CT_STATIC, _class, 1, 1); | add_native_method("class", Method::CT_STATIC, _class, 1, 1); |
| // ^reflection:class_name[object] | // ^reflection:class_name[object] |
| add_native_method("class_name", Method::CT_STATIC, _class_name, 1, 1); | add_native_method("class_name", Method::CT_STATIC, _class_name, 1, 1); |
| // ^reflection:class_by_name[class_name] | |
| add_native_method("class_by_name", Method::CT_STATIC, _class_by_name, 1, 1); | |
| // ^reflection:base_class[object] | // ^reflection:base_class[object] |
| add_native_method("base", Method::CT_STATIC, _base, 1, 1); | add_native_method("base", Method::CT_STATIC, _base, 1, 1); |
| // ^reflection:base_class_name[object] | // ^reflection:base_class_name[object] |
| add_native_method("base_name", Method::CT_STATIC, _base_name, 1, 1); | add_native_method("base_name", Method::CT_STATIC, _base_name, 1, 1); |
| // ^reflection:def[class|...;name] | |
| add_native_method("def", Method::CT_STATIC, _def, 2, 2); | |
| // ^reflection:methods[class_name] | // ^reflection:methods[class_name] |
| add_native_method("methods", Method::CT_STATIC, _methods, 1, 1); | add_native_method("methods", Method::CT_STATIC, _methods, 1, 1); |
| // ^reflection:method_params[class_name;method_name] | // ^reflection:method[object or class;method_name] |
| add_native_method("method_params", Method::CT_STATIC, _method_params, 2, 2); | add_native_method("method", Method::CT_STATIC, _method, 2, 2); |
| // ^reflection:method_info[class_name;method_name] | |
| add_native_method("method_info", Method::CT_STATIC, _method_info, 2, 2); | |
| // ^reflection:fields[object or class] | |
| add_native_method("fields", Method::CT_STATIC, _fields, 1, 1); | |
| // ^reflection:field[object or class;field_name] | |
| add_native_method("field", Method::CT_STATIC, _field, 2, 2); | |
| // ^reflection:dynamical[[object or class, caller if absent]] | |
| add_native_method("dynamical", Method::CT_STATIC, _dynamical, 0, 1); | |
| // ^reflection:is[element_name;class_name|code|method[;context]] | |
| add_native_method("is", Method::CT_STATIC, _is, 2, 3); | |
| // ^reflection:copy[src;dst] | |
| add_native_method("copy", Method::CT_STATIC, _copy, 2, 2); | |
| // ^reflection:uid[object or class] | |
| add_native_method("uid", Method::CT_STATIC, _uid, 1, 1); | |
| // @todo: check how 'create' and 'methods' work with ancestors-classes | // ^reflection:delete[object or class;field_name] |
| add_native_method("delete", Method::CT_STATIC, _delete, 2, 2); | |
| } | } |