--- parser3/src/main/execute.C 2001/02/25 14:23:32 1.43 +++ parser3/src/main/execute.C 2010/04/19 19:39:54 1.360 @@ -1,294 +1,1605 @@ -/* - $Id: execute.C,v 1.43 2001/02/25 14:23:32 paf Exp $ +/** @file + Parser: executor part of request class. + + Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) */ +static const char * const IDENT_EXECUTE_C="$Date: 2010/04/19 19:39:54 $"; + +#include "pa_opcode.h" #include "pa_array.h" -#include "code.h" #include "pa_request.h" #include "pa_vstring.h" #include "pa_vhash.h" -#include "pa_vunknown.h" -#include "pa_vcframe.h" -#include "pa_vmframe.h" +#include "pa_vvoid.h" +#include "pa_vcode_frame.h" +#include "pa_vmethod_frame.h" #include "pa_vobject.h" +#include "pa_vdouble.h" +#include "pa_vbool.h" +#include "pa_vtable.h" +#include "pa_vfile.h" +#include "pa_vimage.h" +#include "pa_wwrapper.h" -#include - -#define PUSH(value) stack.push(value) -#define POP() static_cast(stack.pop()) -#define POP_NAME() static_cast(stack.pop())->as_string() - +//#define DEBUG_EXECUTE +#ifdef DEBUG_EXECUTE char *opcode_name[]={ - "STRING", "CODE", "CLASS", + // literals + "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", + "NESTED_CODE", + + // actions "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", - "CONSTRUCT", - "EXPRESSION_EVAL", "MODIFY_EVAL", - "WRITE", - "GET_ELEMENT", "GET_ELEMENT__WRITE", - "CREATE_EWPOOL", "REDUCE_EWPOOL", - "CREATE_RWPOOL", "REDUCE_RWPOOL", - "GET_METHOD_FRAME", - "STORE_PARAM", - "CALL" +#ifdef OPTIMIZE_BYTECODE_GET_CLASS + "VALUE__GET_CLASS", +#else + "GET_CLASS", +#endif + "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", + "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", +#ifdef OPTIMIZE_BYTECODE_GET_ELEMENT + "VALUE__GET_ELEMENT_OR_OPERATOR", +#else + "GET_ELEMENT_OR_OPERATOR", +#endif + "GET_ELEMENT", + "GET_ELEMENT__WRITE", +#ifdef OPTIMIZE_BYTECODE_GET_ELEMENT + "VALUE__GET_ELEMENT", + "VALUE__GET_ELEMENT__WRITE", + "WITH_ROOT__VALUE__GET_ELEMENT", +#endif +#ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT + "GET_OBJECT_ELEMENT", + "GET_OBJECT_ELEMENT__WRITE", +#endif +#ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT + "GET_OBJECT_VAR_ELEMENT", + "GET_OBJECT_VAR_ELEMENT__WRITE", +#endif +#ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT + "WITH_SELF__VALUE__GET_ELEMENT", + "WITH_SELF__VALUE__GET_ELEMENT__WRITE", +#endif + "OBJECT_POOL", "STRING_POOL", + "PREPARE_TO_CONSTRUCT_OBJECT", + "CONSTRUCT_OBJECT", + "CONSTRUCT_OBJECT__WRITE", + "PREPARE_TO_EXPRESSION", + "CALL", "CALL__WRITE", + +#ifdef OPTIMIZE_BYTECODE_CONSTRUCT + "WITH_ROOT__VALUE__CONSTRUCT_EXPR", + "WITH_ROOT__VALUE__CONSTRUCT_VALUE", + "WITH_WRITE__VALUE__CONSTRUCT_EXPR", + "WITH_WRITE__VALUE__CONSTRUCT_VALUE", + "WITH_SELF__VALUE__CONSTRUCT_EXPR", + "WITH_SELF__VALUE__CONSTRUCT_VALUE", +#endif + + // expression ops: unary + "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS", + // expression ops: binary + "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV", + "BIN_SL", "BIN_SR", + "BIN_AND", "BIN_OR", "BIN_XOR", + "LOG_AND", "LOG_OR", "LOG_XOR", + "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE", + "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE", + "IS" }; -void dump(int level, const Array& ops) { - if(0){ - int size=ops.size(); - //printf("size=%d\n", size); - for(int i=0; icstr(); + else + if(value.is_bool()) + return value.as_bool()?"":""; + else + return ""; +} + +void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) { + char buf[MAX_STRING]; + vsnprintf(buf, MAX_STRING, fmt, args); + SAPI::log(sapi_info, "%s", buf); +} + +void debug_printf(SAPI_Info& sapi_info, const char* fmt, ...) { + va_list args; + va_start(args, fmt); + va_debug_printf(sapi_info, fmt, args); + va_end(args); +} + +void debug_dump(SAPI_Info& sapi_info, int level, ArrayOperation& ops) { + Array_iterator i(ops); + while(i.has_next()) { + OP::OPCODE opcode=i.next().code; + +#if defined(OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT) || defined(OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT) + if( + 1==0 +#ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT + || opcode==OP::OP_GET_OBJECT_ELEMENT + || opcode==OP::OP_GET_OBJECT_ELEMENT__WRITE +#endif +#ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT + || opcode==OP::OP_GET_OBJECT_VAR_ELEMENT + || opcode==OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE +#endif + ){ + i.next(); // skip origin + Value& value1=*i.next().value; + i.next(); // skip origin + Value& value2=*i.next().value; + debug_printf(sapi_info, + "%*s%s" + " \"%s\" \"%s\"", + level*4, "", opcode_name[opcode], + debug_value_to_cstr(value1), debug_value_to_cstr(value2)); + continue; + } +#endif + if( + opcode==OP::OP_CONSTRUCT_OBJECT + || opcode==OP::OP_CONSTRUCT_OBJECT__WRITE + ){ + i.next(); // skip origin + Value& value1=*i.next().value; + i.next(); // skip origin + Value& value2=*i.next().value; + debug_printf(sapi_info, + "%*s%s" + " \"%s\" \"%s\"", + level*4, "", opcode_name[opcode], + debug_value_to_cstr(value1), debug_value_to_cstr(value2)); + + if(ArrayOperation* local_ops=i.next().ops) + debug_dump(sapi_info, level+1, *local_ops); + continue; + } + if( + opcode==OP::OP_VALUE + || opcode==OP::OP_STRING__WRITE +#ifdef OPTIMIZE_BYTECODE_GET_CLASS + || opcode==OP::OP_VALUE__GET_CLASS +#endif +#ifdef OPTIMIZE_BYTECODE_GET_ELEMENT + || opcode==OP::OP_VALUE__GET_ELEMENT + || opcode==OP::OP_VALUE__GET_ELEMENT__WRITE + || opcode==OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR + || opcode==OP::OP_WITH_ROOT__VALUE__GET_ELEMENT +#endif +#ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT + || opcode==OP::OP_WITH_SELF__VALUE__GET_ELEMENT + || opcode==OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE +#endif +#ifdef OPTIMIZE_BYTECODE_CONSTRUCT + || opcode==OP::OP_WITH_ROOT__VALUE__CONSTRUCT_EXPR + || opcode==OP::OP_WITH_ROOT__VALUE__CONSTRUCT_VALUE + || opcode==OP::OP_WITH_WRITE__VALUE__CONSTRUCT_EXPR + || opcode==OP::OP_WITH_WRITE__VALUE__CONSTRUCT_VALUE + || opcode==OP::OP_WITH_SELF__VALUE__CONSTRUCT_EXPR + || opcode==OP::OP_WITH_SELF__VALUE__CONSTRUCT_VALUE +#endif + ) { + Operation::Origin origin=i.next().origin; + Value& value=*i.next().value; + + debug_printf(sapi_info, + "%*s%s" + " \"%s\" %s", + level*4, "", opcode_name[opcode], + debug_value_to_cstr(value), value.type()); + continue; } - } - int size=ops.size(); - //printf("size=%d\n", size); - for(int i=0; i(ops.quick_get(++i)); - printf(" \"%s\"", vstring->get_string()->cstr()); - } - if(op.code==OP_CLASS) { - VClass *vclass=static_cast(ops.quick_get(++i)); - printf(" \"%s\"", vclass->name().cstr()); - } - printf("\n"); - - if(op.code==OP_CODE) { - const Array *local_ops=reinterpret_cast(ops.quick_get(++i)); - dump(level+1, *local_ops); + debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[opcode]); + + switch(opcode) { + case OP::OP_CURLY_CODE__STORE_PARAM: + case OP::OP_EXPR_CODE__STORE_PARAM: + case OP::OP_CURLY_CODE__CONSTRUCT: + case OP::OP_NESTED_CODE: + case OP::OP_OBJECT_POOL: + case OP::OP_STRING_POOL: + case OP::OP_CALL: + case OP::OP_CALL__WRITE: + if(ArrayOperation* local_ops=i.next().ops) + debug_dump(sapi_info, level+1, *local_ops); } } } +#define DEBUG_PRINT_STR(str) debug_printf(sapi_info, str); +#define DEBUG_PRINT_STRING(value) debug_printf(sapi_info, " \"%s\" ", value.cstr()); +#define DEBUG_PRINT_VALUE_AND_TYPE(value) debug_printf(sapi_info, " \"%s\" %s", debug_value_to_cstr(value), value.type()); +#define DEBUG_PRINT_OPS(local_ops) \ + debug_printf(sapi_info, \ + " (%d)\n", local_ops?local_ops->count():0); \ + if(local_ops) debug_dump(sapi_info, 1, *local_ops); + +#else +#define DEBUG_PRINT_STR(str) +#define DEBUG_PRINT_STRING(value) +#define DEBUG_PRINT_VALUE_AND_TYPE(value) +#define DEBUG_PRINT_OPS(local_ops) +#endif + + +// Request + +void Request::execute(ArrayOperation& ops) { + register Stack& stack=this->stack; // helps a lot on MSVC: 'esi' + + const String* debug_name=0; Operation::Origin debug_origin={0, 0, 0}; + try{ +#ifdef DEBUG_EXECUTE + debug_printf(sapi_info, "source----------------------------\n"); + debug_dump(sapi_info, 0, ops); + debug_printf(sapi_info, "execution-------------------------\n"); +#endif + for(Array_iterator i(ops); i.has_next(); ) { + OP::OPCODE opcode=i.next().code; + +#ifdef DEBUG_EXECUTE + debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[opcode]); +#endif + + switch(opcode) { + // param in next instruction + case OP::OP_VALUE: + { + debug_origin=i.next().origin; + Value& value=*i.next().value; -void Request::execute(const Array& ops) { - if(1) { - puts("source----------------------------"); - dump(0, ops); - puts("execution-------------------------"); - } + DEBUG_PRINT_VALUE_AND_TYPE(value) - int size=ops.size(); - //printf("size=%d\n", size); - for(int i=0; i(ops.quick_get(++i)); - printf(" \"%s\"", vstring->get_string()->cstr()); - PUSH(vstring); - break; - } - case OP_CODE: - { - const Array *local_ops=reinterpret_cast(ops.quick_get(++i)); - printf(" (%d)\n", local_ops->size()); - dump(1, *local_ops); - Junction& j=*NEW Junction(pool(), - *self, - 0, - root,rcontext,wcontext,local_ops); - - Value *value=NEW VJunction(j); - PUSH(value); + stack.push(value); break; } - case OP_CLASS: + +#ifdef OPTIMIZE_BYTECODE_GET_CLASS + case OP::OP_VALUE__GET_CLASS: { - VClass *vclass=static_cast(ops.quick_get(++i)); - printf(" \"%s\"", vclass->name().cstr()); - PUSH(vclass); + // maybe they do ^class:method[] call, remember the fact + wcontext->set_somebody_entered_some_class(); + + debug_origin=i.next().origin; + Value& value=*i.next().value; + const String& name=*value.get_string(); debug_name=&name; + + DEBUG_PRINT_STRING(name) + + Value* class_value=get_class(name); + if(!class_value) + throw Exception(PARSER_RUNTIME, + &name, + "class is undefined"); + + stack.push(*class_value); break; } - - // OP_WITH - case OP_WITH_SELF: +#else + case OP::OP_GET_CLASS: { - PUSH(self); + // maybe they do ^class:method[] call, remember the fact + wcontext->set_somebody_entered_some_class(); + + const String& name=stack.pop().string(); debug_name=&name; + Value* value=get_class(name); + if(!value) + throw Exception(PARSER_RUNTIME, + &name, + "class is undefined"); + + stack.push(*value); + break; + } +#endif + // OP_WITH + case OP::OP_WITH_ROOT: + { + stack.push(*method_frame); break; } - case OP_WITH_ROOT: + case OP::OP_WITH_SELF: { - PUSH(root); + stack.push(get_self()); break; } - case OP_WITH_READ: + case OP::OP_WITH_READ: { - PUSH(rcontext); + stack.push(*rcontext); break; } - case OP_WITH_WRITE: + case OP::OP_WITH_WRITE: { - PUSH(wcontext); + if(wcontext==method_frame) + throw Exception(PARSER_RUNTIME, + 0, + "$.name outside of $name[...]"); + + stack.push(*wcontext); break; } - // ... - case OP_CONSTRUCT: + // OTHER ACTIONS BUT WITHs + +#ifdef OPTIMIZE_BYTECODE_CONSTRUCT +#define DO_CONSTRUCT(context, vvalue) { \ + debug_origin=i.next().origin; \ + const String& name=*i.next().value->get_string(); debug_name=&name; \ + DEBUG_PRINT_STRING(name) \ + Value& value=stack.pop().value(); \ + put_element( context, name, vvalue ); \ + break; \ + } +#define DO_CONSTRUCT_VALUE(context) DO_CONSTRUCT(context, &value) +#define DO_CONSTRUCT_EXPR(context) { \ + wcontext->set_in_expression(false); \ + DO_CONSTRUCT(context, &value.as_expr_result()) \ + } + + case OP::OP_WITH_WRITE__VALUE__CONSTRUCT_EXPR: { - Value *value=POP(); - String& name=POP_NAME(); - Value *ncontext=POP(); - value->set_name(name); - ncontext->put_element(name, value); + if(wcontext==method_frame) + throw Exception(PARSER_RUNTIME, 0, "$.name outside of $name[...]"); + DO_CONSTRUCT_EXPR(*wcontext) + } + + case OP::OP_WITH_WRITE__VALUE__CONSTRUCT_VALUE: + { + if(wcontext==method_frame) + throw Exception(PARSER_RUNTIME, 0, "$.name outside of $name[...]"); + DO_CONSTRUCT_VALUE(*wcontext) + } + + case OP::OP_WITH_ROOT__VALUE__CONSTRUCT_EXPR: DO_CONSTRUCT_EXPR(*method_frame) + + case OP::OP_WITH_ROOT__VALUE__CONSTRUCT_VALUE: DO_CONSTRUCT_VALUE(*method_frame) + + case OP::OP_WITH_SELF__VALUE__CONSTRUCT_EXPR: DO_CONSTRUCT_EXPR(get_self()) + + case OP::OP_WITH_SELF__VALUE__CONSTRUCT_VALUE: DO_CONSTRUCT_VALUE(get_self()) + +#endif // OPTIMIZE_BYTECODE_CONSTRUCT + + case OP::OP_CONSTRUCT_VALUE: + { +#ifdef OPTIMIZE_BYTECODE_CONSTRUCT + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); + Value& value=stack.pop().value(); +#else + Value& value=stack.pop().value(); + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); +#endif + put_element(ncontext, name, &value); + break; } - // TODO: OP_EXPRESSION_EVAL, OP_MODIFY_EVAL, - case OP_WRITE: + + case OP::OP_CONSTRUCT_EXPR: { - Value *value=POP(); - wcontext->write(value); + // see OP_PREPARE_TO_EXPRESSION + wcontext->set_in_expression(false); + +#ifdef OPTIMIZE_BYTECODE_CONSTRUCT + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); + Value& expr=stack.pop().value(); +#else + Value& expr=stack.pop().value(); + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); +#endif + Value& value=expr.as_expr_result(); + put_element(ncontext, name, &value); break; } - - case OP_GET_ELEMENT: + + case OP::OP_CURLY_CODE__CONSTRUCT: { - Value *value=get_element(); - PUSH(value); + ArrayOperation& local_ops=*i.next().ops; + + DEBUG_PRINT_OPS((&local_ops)) + + VJunction& value=*new VJunction( + get_self(), 0, + method_frame, + rcontext, + wcontext, + &local_ops); + + wcontext->attach_junction(&value); + + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); + if(const VJunction* vjunction=ncontext.put_element(name, &value, false)) + if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT) + throw Exception(PARSER_RUNTIME, + 0, + "property value can not be code, use [] or () brackets"); + break; } + case OP::OP_NESTED_CODE: + { + ArrayOperation& local_ops=*i.next().ops; - case OP_GET_ELEMENT__WRITE: + DEBUG_PRINT_OPS((&local_ops)) + + stack.push(local_ops); + break; + } + case OP::OP_WRITE_VALUE: { - Value *value=get_element(); - wcontext->write(value); + Value& value=stack.pop().value(); + write_assign_lang(value); break; } + case OP::OP_WRITE_EXPR_RESULT: + { + // see OP_PREPARE_TO_EXPRESSION + wcontext->set_in_expression(false); + Value& value=stack.pop().value(); + wcontext->write(value.as_expr_result()); + break; + } + case OP::OP_STRING__WRITE: + { + i.next(); // ignore origin + Value* value=i.next().value; + + const String& string_value=*value->get_string(); + + DEBUG_PRINT_STRING(string_value) + + write_no_lang(string_value); + break; + } + +#ifdef OPTIMIZE_BYTECODE_GET_ELEMENT + case OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR: + { + debug_origin=i.next().origin; + const String& name=*i.next().value->get_string(); debug_name=&name; + + DEBUG_PRINT_STRING(name) + + if(Method* method=main_class.get_method(name)){ // looking operator of that name FIRST + if(!method->junction_template) method->junction_template=new VJunction(main_class, method); + stack.push(*method->junction_template); + break; + } + Value& value=get_element(*rcontext, name); + stack.push(value); + break; + } +#else + case OP::OP_GET_ELEMENT_OR_OPERATOR: + { + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); + if(Method* method=main_class.get_method(name)){ // looking operator of that name FIRST + if(!method->junction_template) method->junction_template=new VJunction(main_class, method); + stack.push(*method->junction_template); + break; + } + Value& value=get_element(ncontext, name); + stack.push(value); + break; + } +#endif - case OP_CREATE_EWPOOL: +#ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT + case OP::OP_GET_OBJECT_ELEMENT: + case OP::OP_GET_OBJECT_ELEMENT__WRITE: { - PUSH(wcontext); - wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */); + debug_origin=i.next().origin; + const String& context_name=*i.next().value->get_string(); debug_name=&context_name; + + DEBUG_PRINT_STRING(context_name) + + Value& object=get_element(*rcontext, context_name); + + debug_origin=i.next().origin; + const String& field_name=*i.next().value->get_string(); debug_name=&field_name; + + DEBUG_PRINT_STRING(field_name) + + Value& value=get_element(object, field_name); + + if(opcode==OP::OP_GET_OBJECT_ELEMENT){ + stack.push(value); + } else { + write_assign_lang(value); + } break; } - case OP_REDUCE_EWPOOL: +#endif + +#ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT + case OP::OP_GET_OBJECT_VAR_ELEMENT: + case OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE: { - Value *value=wcontext->result(); - wcontext=static_cast(POP()); - PUSH(value); + debug_origin=i.next().origin; + const String& context_name=*i.next().value->get_string(); debug_name=&context_name; + + DEBUG_PRINT_STRING(context_name) + + Value& object=get_element(*rcontext, context_name); + + debug_origin=i.next().origin; + const String& var_name=*i.next().value->get_string(); debug_name=&var_name; + + DEBUG_PRINT_STRING(var_name) + + const String* field=&get_element(*rcontext, var_name).as_string(); + + Value& value=get_element(object, *field); + + if(opcode==OP::OP_GET_OBJECT_VAR_ELEMENT){ + stack.push(value); + } else { + write_assign_lang(value); + } + break; + } +#endif + + case OP::OP_GET_ELEMENT: + { + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); + Value& value=get_element(ncontext, name); + stack.push(value); + break; + } + + case OP::OP_GET_ELEMENT__WRITE: + { + const String& name=stack.pop().string(); debug_name=&name; + Value& ncontext=stack.pop().value(); + Value& value=get_element(ncontext, name); + write_assign_lang(value); + break; + } + +#ifdef OPTIMIZE_BYTECODE_GET_ELEMENT + case OP::OP_VALUE__GET_ELEMENT: + { + debug_origin=i.next().origin; + const String& name=*i.next().value->get_string(); debug_name=&name; + + DEBUG_PRINT_STRING(name) + + Value& value=get_element(*rcontext, name); + stack.push(value); + break; + } + + case OP::OP_VALUE__GET_ELEMENT__WRITE: + { + debug_origin=i.next().origin; + const String& name=*i.next().value->get_string(); debug_name=&name; + + DEBUG_PRINT_STRING(name) + + Value& value=get_element(*rcontext, name); + write_assign_lang(value); + break; + } + + case OP::OP_WITH_ROOT__VALUE__GET_ELEMENT: + { + debug_origin=i.next().origin; + const String& name=*i.next().value->get_string(); debug_name=&name; + + DEBUG_PRINT_STRING(name) + + Value& value=get_element(*method_frame, name); + stack.push(value); + break; + } +#endif + +#ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT + case OP::OP_WITH_SELF__VALUE__GET_ELEMENT: + case OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE: + { + debug_origin=i.next().origin; + const String& name=*i.next().value->get_string(); debug_name=&name; + + DEBUG_PRINT_STRING(name) + + Value& value=get_element(get_self(), name); + + if(opcode==OP::OP_WITH_SELF__VALUE__GET_ELEMENT){ + stack.push(value); + } else { + write_assign_lang(value); + } + break; + } +#endif + + case OP::OP_OBJECT_POOL: + { + ArrayOperation& local_ops=*i.next().ops; + + WContext *saved_wcontext=wcontext; + String::Language saved_lang=flang; + flang=String::L_PASS_APPENDED; +#ifdef OPTIMIZE_SINGLE_STRING_WRITE + WObjectPoolWrapper local(wcontext); +#else + WWrapper local(wcontext); +#endif + wcontext=&local; + + execute(local_ops); + + stack.push(wcontext->result().as_value()); + flang=saved_lang; + wcontext=saved_wcontext; break; } - case OP_CREATE_RWPOOL: + case OP::OP_STRING_POOL: + { + ArrayOperation& local_ops=*i.next().ops; + + WContext *saved_wcontext=wcontext; + WWrapper local(wcontext); + wcontext=&local; + + execute(local_ops); + + Value* value; + // from "$a $b" part of expression taking only string value, + // ignoring any other content of wcontext + if(const String* string=wcontext->get_string()) + value=new VString(*string); + else + value=VVoid::get(); + stack.push(*value); + + wcontext=saved_wcontext; + break; + } + + // CALL + case OP::OP_CURLY_CODE__STORE_PARAM: + case OP::OP_EXPR_CODE__STORE_PARAM: + { + // code + ArrayOperation& local_ops=*i.next().ops; + + DEBUG_PRINT_OPS((&local_ops)) + + // when they evaluate expression parameter, + // the object expression result + // does not need to be written into calling frame + // it must go into any expressions using that parameter + // hence, we zero junction.wcontext here, and later + // in .process we would test that field + // in decision "which wwrapper to use" + VJunction& value=*new VJunction( + get_self(), 0, + method_frame, + rcontext, + opcode==OP::OP_EXPR_CODE__STORE_PARAM?0:wcontext, + &local_ops); +#ifndef USE_DESTRUCTORS + if (opcode!=OP::OP_EXPR_CODE__STORE_PARAM) + wcontext->attach_junction(&value); +#endif + // store param + stack.push(value); + break; + } + + case OP::OP_PREPARE_TO_EXPRESSION: { - Value *ncontext=POP(); - PUSH(rcontext); - rcontext=ncontext; - PUSH(wcontext); - wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */); + wcontext->set_in_expression(true); break; } - case OP_REDUCE_RWPOOL: + +#define METHOD_FRAME_ACTION(action) \ + if(local_ops){ \ + size_t first = stack.top_index(); \ + execute(*local_ops); \ + frame.store_params((Value**)stack.ptr(first), stack.top_index()-first); \ + action; \ + stack.set_top_index(first); \ + } else { \ + frame.empty_params(); \ + action; \ + } + + case OP::OP_CALL: { - String *string=wcontext->get_string(); - Value *value=NEW VString(*string); - wcontext=static_cast(POP()); - rcontext=POP(); - PUSH(value); + ArrayOperation* local_ops=i.next().ops; + + DEBUG_PRINT_OPS(local_ops) + DEBUG_PRINT_STR("->\n") + + Value& value=stack.pop().value(); + + Junction* junction=value.get_junction(); + if(!junction) { + if(value.is("void")) + throw Exception(PARSER_RUNTIME, + 0, + "undefined method"); + else + throw Exception(PARSER_RUNTIME, + 0, + "is '%s', not a method or junction, can not call it", + value.type()); + } + + VMethodFrame frame(*junction, method_frame); + METHOD_FRAME_ACTION(op_call(frame, false)); + stack.push(frame.result().as_value()); + + DEBUG_PRINT_STR("<-returned") + + if(get_skip()) + return; + if(get_interrupted()) { + set_interrupted(false); + throw Exception("parser.interrupted", + 0, + "execution stopped"); + } + break; + } + + case OP::OP_CALL__WRITE: + { + ArrayOperation* local_ops=i.next().ops; + + DEBUG_PRINT_OPS(local_ops) + DEBUG_PRINT_STR("->\n") + + Value& value=stack.pop().value(); + + Junction* junction=value.get_junction(); + if(!junction) { + if(value.is("void")) + throw Exception(PARSER_RUNTIME, + 0, + "undefined method"); + else + throw Exception(PARSER_RUNTIME, + 0, + "is '%s', not a method or junction, can not call it", + value.type()); + } + +#ifdef OPTIMIZE_CALL + const Method& method=*junction->method; + if(method.call_optimization==Method::CO_WITHOUT_FRAME){ + if(local_ops){ // store param code goes here + size_t first = stack.top_index(); + execute(*local_ops); + + MethodParams method_params; + method_params.store_params((Value**)stack.ptr(first), stack.top_index()-first); + method.check_actual_numbered_params(junction->self, &method_params); + method.native_code(*this, method_params); // execute it + + stack.set_top_index(first); + } else { + MethodParams method_params; + method.check_actual_numbered_params(junction->self, &method_params); + method.native_code(*this, method_params); // execute it + } + } else if(method.call_optimization==Method::CO_WITHOUT_WCONTEXT){ + VMethodFrame frame(*junction, method_frame); + METHOD_FRAME_ACTION(op_call_write(frame)); + } else +#endif // OPTIMIZE_CALL + { + VMethodFrame frame(*junction, method_frame); + METHOD_FRAME_ACTION(op_call(frame, false)); + write_pass_lang(frame.result()); + } + + DEBUG_PRINT_STR("<-returned") + + if(get_skip()) + return; + if(get_interrupted()) { + set_interrupted(false); + throw Exception("parser.interrupted", + 0, + "execution stopped"); + } break; } - // CALL - case OP_GET_METHOD_FRAME: + case OP::OP_CONSTRUCT_OBJECT: + case OP::OP_CONSTRUCT_OBJECT__WRITE: { - Value *value=POP(); - // [self/class?;params;local;code/native_code](name) - Junction *junction=value->get_junction(); + debug_origin=i.next().origin; + Value& vclass_name=*i.next().value; + const String& class_name=*vclass_name.get_string(); debug_name=&class_name; + + DEBUG_PRINT_STRING(class_name) + + Value* class_value=get_class(class_name); + if(!class_value) + throw Exception(PARSER_RUNTIME, + &class_name, + "class is undefined"); + + debug_origin=i.next().origin; + Value& vconstructor_name=*i.next().value; + const String& constructor_name=*vconstructor_name.get_string(); debug_name=&constructor_name; + + DEBUG_PRINT_STRING(constructor_name) + + Value& constructor_value=get_element(*class_value, constructor_name); + + Junction* junction=constructor_value.get_junction(); if(!junction) - THROW(0,0, - &value->name(), - "type is '%s', can not call it (must be method or junction)", - value->type()); - //unless(method) method=operators.get_method[...;code/native_code](name) - VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); - PUSH(frame); - break; - } - case OP_STORE_PARAM: - { - Value *value=POP(); - VMethodFrame *frame=static_cast(stack[0]); - frame->store_param(value); + throw Exception(PARSER_RUNTIME, + &constructor_name, + "constructor must be declared in class '%s'", + class_value->get_class()->name_cstr()); + + ArrayOperation* local_ops=i.next().ops; + DEBUG_PRINT_OPS(local_ops) + DEBUG_PRINT_STR("->\n") + + Junction casted=Junction(*class_value, junction->method); + VConstructorFrame frame(casted, method_frame); + + METHOD_FRAME_ACTION(op_call(frame, true /* constructing */)); + if(opcode==OP::OP_CONSTRUCT_OBJECT) + stack.push(frame.result().as_value()); + else + write_pass_lang(frame.result()); + + DEBUG_PRINT_STR("<-returned") + break; + } + + // expression ops: unary + case OP::OP_NEG: + { + Value& a=stack.pop().value(); + Value& value=*new VDouble(-a.as_double()); + stack.push(value); + break; + } + case OP::OP_INV: + { + Value& a=stack.pop().value(); + Value& value=*new VDouble(~a.as_int()); + stack.push(value); + break; + } + case OP::OP_NOT: + { + Value& a=stack.pop().value(); + Value& value=VBool::get(!a.as_bool()); + stack.push(value); + break; + } + case OP::OP_DEF: + { + Value& a=stack.pop().value(); + Value& value=VBool::get(a.is_defined()); + stack.push(value); break; } + case OP::OP_IN: + { + Value& a=stack.pop().value(); + const String& path=a.as_string(); + Value& value=VBool::get(request_info.uri && *request_info.uri && path.this_starts(request_info.uri)); + stack.push(value); + break; + } + case OP::OP_FEXISTS: + { + Value& a=stack.pop().value(); + Value& value=VBool::get(file_exist(absolute(a.as_string()))); + stack.push(value); + break; + } + case OP::OP_DEXISTS: + { + Value& a=stack.pop().value(); + Value& value=VBool::get(dir_exists(absolute(a.as_string()))); + stack.push(value); + break; + } + + // expression ops: binary + case OP::OP_SUB: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VDouble(a.as_double() - b.as_double()); + stack.push(value); + break; + } + case OP::OP_ADD: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VDouble(a.as_double() + b.as_double()); + stack.push(value); + break; + } + case OP::OP_MUL: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VDouble(a.as_double() * b.as_double()); + stack.push(value); + break; + } + case OP::OP_DIV: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + + double a_double=a.as_double(); + double b_double=b.as_double(); - case OP_CALL: - { - printf("->\n"); - VMethodFrame *frame=static_cast(POP()); - frame->fill_unspecified_params(); - PUSH(self); PUSH(root); PUSH(rcontext); PUSH(wcontext); - - VClass *called_class=frame->junction.self.get_class(); - // constructing? - if(wcontext->constructing()) { // yes - // constructor call: $some(^class:method(..)) - self=NEW VObject(pool(), *called_class); - frame->write(self); - } else { // no - // static or dynamic call - self=&frame->junction.self; - } - frame->set_self(self); - - root=rcontext=wcontext=frame; - execute(frame->junction.method->code); - Value *value=wcontext->result(); - wcontext=static_cast(POP()); rcontext=POP(); root=POP(); self=POP(); - wcontext->write(value); - printf("<-returned"); + if(b_double == 0) { + //const String* problem_source=b.as_string(); + throw Exception("number.zerodivision", + 0, //problem_source, + "Division by zero"); + } + + Value& value=*new VDouble(a_double / b_double); + stack.push(value); + break; + } + case OP::OP_MOD: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + + double a_double=a.as_double(); + double b_double=b.as_double(); + + if(b_double == 0) { + //const String* problem_source=b.as_string(); + throw Exception("number.zerodivision", + 0, //problem_source, + "Modulus by zero"); + } + + Value& value=*new VDouble(fmod(a_double, b_double)); + stack.push(value); + break; + } + case OP::OP_INTDIV: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + + int a_int=a.as_int(); + int b_int=b.as_int(); + + if(b_int == 0) { + //const String* problem_source=b.as_string(); + throw Exception("number.zerodivision", + 0, //problem_source, + "Division by zero"); + } + + Value& value=*new VInt(a_int / b_int); + stack.push(value); + break; + } + case OP::OP_BIN_SL: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VInt( + a.as_int() << + b.as_int()); + stack.push(value); + break; + } + case OP::OP_BIN_SR: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VInt( + a.as_int() >> + b.as_int()); + stack.push(value); + break; + } + case OP::OP_BIN_AND: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VInt( + a.as_int() & + b.as_int()); + stack.push(value); + break; + } + case OP::OP_BIN_OR: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VInt( + a.as_int() | + b.as_int()); + stack.push(value); + break; + } + case OP::OP_BIN_XOR: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=*new VInt( + a.as_int() ^ + b.as_int()); + stack.push(value); + break; + } + case OP::OP_LOG_AND: + { + ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value(); + bool result; + if(a.as_bool()) { + execute(local_ops); + Value& b=stack.pop().value(); + result=b.as_bool(); + } else + result=false; + Value& value=VBool::get(result); + stack.push(value); + break; + } + case OP::OP_LOG_OR: + { + ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value(); + bool result; + if(a.as_bool()) + result=true; + else { + execute(local_ops); + Value& b=stack.pop().value(); + result=b.as_bool(); + } + Value& value=VBool::get(result); + stack.push(value); + break; + } + case OP::OP_LOG_XOR: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.as_bool() ^ b.as_bool()); + stack.push(value); + break; + } + case OP::OP_NUM_LT: + { + volatile double b_double=stack.pop().value().as_double(); + volatile double a_double=stack.pop().value().as_double(); + Value& value=VBool::get(a_doubleb_double); + stack.push(value); + break; + } + case OP::OP_NUM_LE: + { + volatile double b_double=stack.pop().value().as_double(); + volatile double a_double=stack.pop().value().as_double(); + Value& value=VBool::get(a_double<=b_double); + stack.push(value); + break; + } + case OP::OP_NUM_GE: + { + volatile double b_double=stack.pop().value().as_double(); + volatile double a_double=stack.pop().value().as_double(); + Value& value=VBool::get(a_double>=b_double); + stack.push(value); + break; + } + case OP::OP_NUM_EQ: + { + volatile double b_double=stack.pop().value().as_double(); + volatile double a_double=stack.pop().value().as_double(); + Value& value=VBool::get(a_double==b_double); + stack.push(value); + break; + } + case OP::OP_NUM_NE: + { + volatile double b_double=stack.pop().value().as_double(); + volatile double a_double=stack.pop().value().as_double(); + Value& value=VBool::get(a_double!=b_double); + stack.push(value); + break; + } + case OP::OP_STR_LT: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.as_string() < b.as_string()); + stack.push(value); + break; + } + case OP::OP_STR_GT: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.as_string() > b.as_string()); + stack.push(value); + break; + } + case OP::OP_STR_LE: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.as_string() <= b.as_string()); + stack.push(value); + break; + } + case OP::OP_STR_GE: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.as_string() >= b.as_string()); + stack.push(value); + break; + } + case OP::OP_STR_EQ: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.as_string() == b.as_string()); + stack.push(value); + break; + } + case OP::OP_STR_NE: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.as_string() != b.as_string()); + stack.push(value); + break; + } + case OP::OP_IS: + { + Value& b=stack.pop().value(); Value& a=stack.pop().value(); + Value& value=VBool::get(a.is(b.as_string().cstr())); + stack.push(value); break; } default: - printf("\tTODO"); - break; + throw Exception(0, + 0, + "invalid opcode %d", opcode); } - printf("\n"); } + } catch(const Exception&) { + // record it to stack trace + if(debug_name) + exception_trace.push(Trace(debug_name, debug_origin)); + rethrow; + } +} + +#define SAVE_CONTEXT \ + VMethodFrame *saved_method_frame=method_frame; \ + Value* saved_rcontext=rcontext; \ + WContext *saved_wcontext=wcontext; + +#define RESTORE_CONTEXT \ + wcontext=saved_wcontext; \ + rcontext=saved_rcontext; \ + method_frame=saved_method_frame; + +void Request::op_call(VMethodFrame& frame, bool constructing){ + const Junction &junction=frame.junction; + VStateless_class& called_class=*junction.self.get_class(); + Value* new_self; + + if(constructing) { + if(junction.method->call_type!=Method::CT_STATIC) { + // this is a constructor call + if(new_self=called_class.create_new_value(fpool)) { + // some stateless_class creatable derivates + } else + throw Exception(PARSER_RUNTIME, + 0, //&frame.name(), + "is not a constructor, system class '%s' can be constructed only implicitly", + called_class.name().cstr()); + + frame.write(*new_self); + } else + throw Exception(PARSER_RUNTIME, + 0, //&frame.name(), + "method is static and can not be used as constructor"); + } else + new_self=&junction.self; + + frame.set_self(*new_self); + + // see OP_PREPARE_TO_EXPRESSION + frame.set_in_expression(wcontext->get_in_expression()); + + SAVE_CONTEXT + + rcontext=wcontext=&frame; + method_frame=&frame; + + const Method& method=*junction.method; + Method::Call_type call_type=&called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC; + + if(method.call_type==Method::CT_ANY || method.call_type==call_type) { // allowed call type? + if(method.native_code) { // native code? + method.check_actual_numbered_params(junction.self, frame.numbered_params()); + method.native_code(*this, *frame.numbered_params()); // execute it + } else // parser code, execute it + recoursion_checked_execute(*method.parser_code); + } else + throw Exception(PARSER_RUNTIME, + 0, + "is not allowed to be called %s", + call_type==Method::CT_STATIC?"statically":"dynamically"); + + RESTORE_CONTEXT + //return &frame; +} + +void Request::op_call_write(VMethodFrame& frame){ + const Junction &junction=frame.junction; + + frame.set_self(junction.self); + + VMethodFrame *saved_method_frame=method_frame; + Value* saved_rcontext=rcontext; + + rcontext=&frame; + method_frame=&frame; + + const Method& method=*junction.method; + Method::Call_type call_type=junction.self.get_class()==&junction.self ? Method::CT_STATIC : Method::CT_DYNAMIC; + + if(method.call_type==Method::CT_ANY || method.call_type==call_type) { // allowed call type? + if(method.native_code) { // native code? + method.check_actual_numbered_params(junction.self, frame.numbered_params()); + method.native_code(*this, *frame.numbered_params()); // execute it + } else // parser code, execute it + recoursion_checked_execute(*method.parser_code); + } else + throw Exception(PARSER_RUNTIME, + 0, + "is not allowed to be called %s", + call_type==Method::CT_STATIC?"statically":"dynamically"); + + rcontext=saved_rcontext; + method_frame=saved_method_frame; +} + +Value& Request::get_element(Value& ncontext, const String& name) { + if(wcontext->get_somebody_entered_some_class()) // ^class:method + if(VStateless_class *called_class=ncontext.get_class()) + if(VStateless_class *read_class=rcontext->get_class()) + if(read_class->derived_from(*called_class)){ // current derived from called + Value *value=called_class->get_element(get_self(), name); + return *(value ? &process_to_value(*value) : VVoid::get()); + } + + Value* value=ncontext.get_element(name); + + return *(value ? &process_to_value(*value) : VVoid::get()); +} + +void Request::put_element(Value& ncontext, const String& name, Value* value) { + // put_element can return property-setting-junction + if(const VJunction* vjunction=ncontext.put_element(name, value, false)) + if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT) { + // process it + VMethodFrame frame(vjunction->junction(), method_frame/*caller*/); + + size_t param_count=frame.method_params_count(); + if(param_count!=1) + throw Exception(PARSER_RUNTIME, + 0, + "setter method must have ONE parameter (has %d parameters)", param_count); + + frame.store_params(&value, 1); + frame.set_self(frame.junction.self); + + SAVE_CONTEXT + + rcontext=wcontext=&frame; + method_frame=&frame; + + // prevent non-string writes for better error reporting [setters are not expected to return anything] + wcontext->write(*method_frame); + + recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it + // we don't need it StringOrValue result=wcontext->result(); + + RESTORE_CONTEXT + } +} + +/** @param intercept_string + - true: + they want result=string value, + possible object result goes to wcontext + - false: + they want any result[string|object] + nothing goes to wcontext. + used in @c (expression) params evaluation + + using the fact it's either string_ or value_ result requested to speed up checkes +*/ +StringOrValue Request::process(Value& input_value, bool intercept_string) { + Junction* junction=input_value.get_junction(); + if(junction) { + if(junction->is_getter) { // is it a getter-junction? + VMethodFrame frame(*junction, method_frame/*caller*/); + Value *param; + + if(size_t param_count=frame.method_params_count()){ + if(junction->auto_name){ // default getter + if(param_count==1){ + param=new VString(*junction->auto_name); + frame.store_params(¶m, 1); + } else + throw Exception(PARSER_RUNTIME, + 0, + "default getter method can't have more then 1 parameter (has %d parameters)", param_count); + } else + throw Exception(PARSER_RUNTIME, + 0, + "getter method must have no parameters (has %d parameters)", param_count); + } // no need for else frame.empty_params() + + frame.set_self(frame.junction.self); + + SAVE_CONTEXT + + rcontext=wcontext=&frame; + method_frame=&frame; + + recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it + + RESTORE_CONTEXT + + return frame.result(); + } + + if(junction->code) { // is it a code-junction? + // process it + StringOrValue result; + + DEBUG_PRINT_STR("ja->\n") + + if(!junction->method_frame) + throw Exception(PARSER_RUNTIME, + 0, + "junction used outside of context"); + + SAVE_CONTEXT + + method_frame=junction->method_frame; + rcontext=junction->rcontext; + + // for expression method params + // wcontext is set 0 + // using the fact in decision "which wwrapper to use" + bool using_code_frame=intercept_string && junction->wcontext; + if(using_code_frame) { + // almost plain wwrapper about junction wcontext + + VCodeFrame local(*junction->wcontext); + wcontext=&local; + + // execute it + recoursion_checked_execute(*junction->code); + + // CodeFrame soul: + result=wcontext->result(); + } else { + // plain wwrapper + WWrapper local(wcontext); + wcontext=&local; + + // execute it + recoursion_checked_execute(*junction->code); + + result=wcontext->result(); + } + + RESTORE_CONTEXT + + DEBUG_PRINT_STR("<-ja returned") + + return result; + } + + // it is then method-junction, do not explode it + // just return it as we do for usual objects + } + + return input_value; } -Value *Request::get_element() { - String& name=POP_NAME(); - Value *ncontext=POP(); - Value *value=ncontext->get_element(name); - - if(value) { - Junction *junction=value->get_junction(); - if(junction && junction->code) { // is it a code-junction? - // autocalc it - printf("ja->\n"); - PUSH(self); PUSH(root); PUSH(rcontext); PUSH(wcontext); - // almost plain wwrapper about junction wcontext, - // BUT intercepts string writes - VCodeFrame frame(pool(), *junction->wcontext); wcontext=&frame; - self=&junction->self; - root=junction->root; +void Request::process_write(Value& input_value) { + Junction* junction=input_value.get_junction(); + if(junction) { + if(junction->is_getter) { // is it a getter-junction? + VMethodFrame frame(*junction, method_frame/*caller*/); + Value *param; + + if(size_t param_count=frame.method_params_count()){ + if(junction->auto_name){ // default getter + if(param_count==1){ + param=new VString(*junction->auto_name); + frame.store_params(¶m, 1); + } else + throw Exception(PARSER_RUNTIME, + 0, + "default getter method can't have more then 1 parameter (has %d parameters)", param_count); + } else + throw Exception(PARSER_RUNTIME, + 0, + "getter method must have no parameters (has %d parameters)", param_count); + } // no need for else frame.empty_params() + + frame.set_self(frame.junction.self); + + SAVE_CONTEXT + + rcontext=wcontext=&frame; + method_frame=&frame; + + recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it + + RESTORE_CONTEXT + + write_pass_lang(frame.result()); + return; + } + + if(junction->code) { // is it a code-junction? + // process it + + DEBUG_PRINT_STR("ja->\n") + + if(!junction->method_frame) + throw Exception(PARSER_RUNTIME, + 0, + "junction used outside of context"); + + SAVE_CONTEXT + + method_frame=junction->method_frame; rcontext=junction->rcontext; - execute(*junction->code); - // CodeFrame soul: - // string writes were intercepted - // returning them as the result of getting code-junction - value=NEW VString(*frame.get_string()); - wcontext=static_cast(POP()); rcontext=POP(); root=POP(); self=POP(); - printf("<-ja returned"); + + // for expression method params + // wcontext is set 0 + // using the fact in decision "which wwrapper to use" +#ifdef OPTIMIZE_CALL + if(wcontext==junction->wcontext){ + // no wrappers for wcontext + recoursion_checked_execute(*junction->code); + RESTORE_CONTEXT + + } else +#endif + if(junction->wcontext) { + // almost plain wwrapper about junction wcontext + VCodeFrame local(*junction->wcontext); + wcontext=&local; + + // execute it + recoursion_checked_execute(*junction->code); + RESTORE_CONTEXT + write_pass_lang(local.result()); + } else { + // plain wwrapper + WWrapper local(wcontext); + wcontext=&local; + + // execute it + recoursion_checked_execute(*junction->code); + RESTORE_CONTEXT + write_pass_lang(local.result()); + } + + DEBUG_PRINT_STR("<-ja returned") + + return; } + + // it is then method-junction, do not explode it + // just return it as we do for usual objects + } + + write_pass_lang(input_value); +} + +StringOrValue Request::execute_method(VMethodFrame& amethod_frame, const Method& method) { + SAVE_CONTEXT + + // initialize contexts + rcontext=wcontext=method_frame=&amethod_frame; + + // execute! + execute(*method.parser_code); + + // result + StringOrValue result=wcontext->result(); + + RESTORE_CONTEXT + + // return + return result; +} + +const String* Request::execute_method(Value& aself, + const Method& method, Value* optional_param, + bool do_return_string) { + + SAVE_CONTEXT + + Junction local_junction(aself, &method); + VMethodFrame local_frame(local_junction, method_frame/*caller*/); + if(optional_param && local_frame.method_params_count()>0) { + local_frame.store_params(&optional_param, 1); } else { - value=NEW VUnknown(pool()); - value->set_name(name); + local_frame.empty_params(); } - return value; + local_frame.set_self(aself); + rcontext=wcontext=method_frame=&local_frame; + + // prevent non-string writes for better error reporting + if(do_return_string) + local_frame.write(local_frame); + + // execute! + execute(*method.parser_code); + + // result + const String* result=do_return_string ? local_frame.get_string() : 0; + + RESTORE_CONTEXT + + return result; +} + +Request::Execute_nonvirtual_method_result +Request::execute_nonvirtual_method(VStateless_class& aclass, + const String& method_name, + VString* optional_param, + bool do_return_string) { + Execute_nonvirtual_method_result result; + result.method=aclass.get_method(method_name); + if(result.method) + result.string=execute_method(aclass, *result.method, optional_param, do_return_string); + return result; +} + +const String* Request::execute_virtual_method(Value& aself, + const String& method_name) { + if(Value* value=aself.get_element(method_name)) + if(Junction* junction=value->get_junction()) + if(const Method *method=junction->method) + return execute_method(aself, *method, 0/*no params*/, true); + + return 0; }