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| version 1.14, 2001/02/22 08:16:31 | version 1.295.2.27.2.1, 2003/03/18 15:14:18 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: executor part of request class. |
| Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| */ | */ |
| static const char* IDENT_EXECUTE_C="$Date$"; | |
| #include "pa_opcode.h" | |
| #include "pa_array.h" | #include "pa_array.h" |
| #include "code.h" | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "pa_vstring.h" | |
| #include "pa_vhash.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 <stdio.h> | // #define DEBUG_EXECUTE |
| #define PA_DEBUG_NO_STACK_TRACE | |
| #ifdef DEBUG_EXECUTE | |
| char *opcode_name[]={ | char *opcode_name[]={ |
| "STRING", | // literals |
| "CODE_ARRAY", | "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", |
| "NESTED_CODE", | |
| // actions | |
| "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", | "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", |
| "CONSTRUCT", | "GET_CLASS", |
| "EXPRESSION_EVAL", "MODIFY_EVAL", | "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", |
| "WRITE_STRING", "WRITE_VALUE", | "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", |
| "GET_ELEMENT", "GET_ELEMENT__WRITE_VALUE", | "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE", |
| "CREATE_EWPOOL", "REDUCE_EWPOOL", | "OBJECT_POOL", "STRING_POOL", |
| "CREATE_RWPOOL", "REDUCE_RWPOOL", | |
| "GET_METHOD_FRAME", | |
| "CREATE_JUNCTION", | |
| "STORE_PARAM", | "STORE_PARAM", |
| "CALL" | "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION", |
| "CALL", "CALL__WRITE", | |
| // 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) { | void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) { |
| int size=ops.size(); | char buf[MAX_STRING]; |
| for(int i=0; i<size; i++) { | vsnprintf(buf, MAX_STRING, fmt, args); |
| int code=reinterpret_cast<int>(ops.quick_get(i)); | SAPI::log(sapi_info, "%s", buf); |
| printf("%*s%s", level*4, "", opcode_name[code]); | } |
| 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); | |
| } | |
| if(code==OP_STRING) { | void debug_dump(SAPI_Info& sapi_info, , int level, ArrayOperation& ops) { |
| const String *string=static_cast<const String *>(ops.quick_get(++i)); | Array_iterator<Operation> i(ops); |
| printf(" \"%s\"", string->cstr()); | while(i.has_next()) { |
| Operation& op=i.next(); | |
| if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { | |
| ValuePtr value=i.next().value; | |
| debug_printf(sapi_info, | |
| "%*s%s" | |
| " \"%s\" %s", | |
| level*4, "", opcode_name[op.code], | |
| value->get_string(&pool)->cstr().get(), value->type()); | |
| continue; | |
| } | } |
| printf("\n"); | debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[op.code]); |
| if(code==OP_CODE_ARRAY) { | switch(op.code) { |
| const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); | case OP_CURLY_CODE__STORE_PARAM: |
| dump(level+1, *local_ops); | case OP_EXPR_CODE__STORE_PARAM: |
| case OP_CURLY_CODE__CONSTRUCT: | |
| case OP_NESTED_CODE: | |
| case OP_OBJECT_POOL: | |
| case OP_STRING_POOL: | |
| case OP_CALL: | |
| case OP_CALL__WRITE: | |
| if(ArrayOperation* local_ops=i.next().ops.get()) | |
| debug_dump(sapi_info, pool, level+1, *local_ops); | |
| } | } |
| } | } |
| } | } |
| #endif | |
| void Request::execute(Array& ops) { | // Request |
| if(1) { | |
| puts("---------------------------"); | |
| dump(0, ops); | |
| puts("---------------------------"); | |
| } | |
| int size=ops.size(); | void Request::execute(ArrayOperation& ops) { |
| for(int i=0; i<size; i++) { | // _asm int 3; |
| int code=reinterpret_cast<int>(ops.quick_get(i)); | #ifdef DEBUG_EXECUTE |
| printf("%s\n", opcode_name[code]); | debug_printf(sapi_info, "source----------------------------\n"); |
| debug_dump(sapi_info, pool(), 0, ops); | |
| debug_printf(sapi_info, "execution-------------------------\n"); | |
| #endif | |
| const String& last_get_element_name(0); | |
| if(code==OP_CODE_ARRAY) { | Array_iterator<Operation> i(ops); |
| const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); | ValuePtr value; |
| //dump(level+1, *local_ops); | ValuePtr a; ValuePtr b; |
| //ArrayOperationPtr b_code; | |
| const String& name; | |
| ValuePtr ncontext; | |
| ArrayOperationPtr local_ops; | |
| while(i.has_next()) { | |
| if(get_interrupted()) { | |
| set_interrupted(false); | |
| throw Exception("parser.interrupted", | |
| Exception::undefined_source, | |
| "execution stopped"); | |
| } | } |
| switch(code) { | Operation& op=i.next(); |
| case OP_WITH_WRITE: | #ifdef DEBUG_EXECUTE |
| debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[op.code]); | |
| #endif | |
| switch(op.code) { | |
| // param in next instruction | |
| case OP_VALUE: | |
| { | { |
| stack.push(wcontext); | value=i.next().value; |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " \"%s\" %s", value->get_string(&pool())->cstr().get(), value->type()); | |
| #endif | |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_GET_CLASS: | |
| case OP_STRING: | |
| { | { |
| String *string=static_cast<String *>(ops.quick_get(++i)); | // maybe they do ^class:method[] call, remember the fact |
| stack.push(string); | wcontext->set_somebody_entered_some_class(); |
| name=stack.pop().string(); | |
| value=classes().get(name); | |
| if(!value) | |
| throw Exception("parser.runtime", | |
| String* (name), | |
| "class is undefined"); | |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_CONSTRUCT: | // OP_WITH |
| case OP_WITH_ROOT: | |
| { | { |
| Value *value=static_cast<Value *>(stack.pop()); | stack.push(ValuePtr(method_frame)); |
| String *name=static_cast<String *>(stack.pop()); | |
| Value *ncontext=static_cast<Value *>(stack.pop()); | |
| ncontext->put_element(*name, value); | |
| break; | break; |
| } | } |
| case OP_WITH_SELF: | |
| case OP_WRITE_STRING: | { |
| stack.push(ValuePtr(get_self())); | |
| break; | |
| } | |
| case OP_WITH_READ: | |
| { | |
| stack.push(ValuePtr(rcontext)); | |
| break; | |
| } | |
| case OP_WITH_WRITE: | |
| { | { |
| String *string=static_cast<String *>(stack.pop()); | if(wcontext==method_frame) |
| wcontext->write(string); | throw Exception("parser.runtime", |
| Exception::undefined_source, | |
| "$.name outside of $name[...]"); | |
| stack.push(ValuePtr(wcontext)); | |
| break; | break; |
| } | } |
| // OTHER ACTIONS BUT WITHs | |
| case OP_CONSTRUCT_VALUE: | |
| { | |
| value=stack.pop().value; | |
| name=stack.pop().string(); | |
| ncontext=stack.pop().value; | |
| ncontext->put_element(name, value, false); | |
| break; | |
| } | |
| case OP_CONSTRUCT_EXPR: | |
| { | |
| // see OP_PREPARE_TO_EXPRESSION | |
| wcontext->set_in_expression(false); | |
| value=stack.pop().value; | |
| name=stack.pop().string(); | |
| ncontext=stack.pop().value; | |
| ncontext->put_element(name, value->as_expr_result(), false); | |
| break; | |
| } | |
| case OP_CURLY_CODE__CONSTRUCT: | |
| { | |
| local_ops=i.next().ops; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " (%d)\n", local_ops->count()); | |
| debug_dump(sapi_info, pool(), 1, *local_ops); | |
| #endif | |
| value=ValuePtr(new VJunction(JunctionPtr(new Junction( | |
| get_self(), 0, | |
| method_frame, | |
| rcontext, | |
| wcontext, | |
| local_ops)))); | |
| name=stack.pop().string(); | |
| ncontext=stack.pop().value; | |
| ncontext->put_element(name, value, false); | |
| break; | |
| } | |
| case OP_NESTED_CODE: | |
| { | |
| local_ops=i.next().ops; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " (%d)\n", local_ops->count()); | |
| debug_dump(sapi_info, pool(), 1, *local_ops); | |
| #endif | |
| stack.push(local_ops); | |
| break; | |
| } | |
| case OP_WRITE_VALUE: | case OP_WRITE_VALUE: |
| { | { |
| Value *value=static_cast<Value *>(stack.pop()); | value=stack.pop().value; |
| wcontext->write(value); | write_assign_lang(value, last_get_element_name); |
| break; | |
| } | |
| case OP_WRITE_EXPR_RESULT: | |
| { | |
| value=stack.pop().value; | |
| write_no_lang(value->as_expr_result()); | |
| // must be after write(result) and | |
| // see OP_PREPARE_TO_EXPRESSION | |
| wcontext->set_in_expression(false); | |
| break; | |
| } | |
| case OP_STRING__WRITE: | |
| { | |
| value=i.next().value; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " \"%s\"", value->get_string(0)->cstr().get()); | |
| #endif | |
| write_no_lang(*value->get_string(0)); | |
| break; | break; |
| } | } |
| /*case OP_GET_ELEMENT: | case OP_GET_ELEMENT_OR_OPERATOR: |
| { | |
| value=get_element(last_get_element_name, true); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_GET_ELEMENT: | |
| { | { |
| String *name=static_cast<String *>(stack.pop()); | value=get_element(last_get_element_name, false); |
| Value *ncontext=static_cast<Value *>(stack.pop()); | |
| Value *value=ncontext->get_element(*name); // name áûâàåò method, òîãäà âûäà¸ò new junction(ÀÂÒÎÂÛ×ÈÑËßÒÜ=false, root,self,rcontext,wcontext,code) | |
| // name áûâàåò èìÿ junction, òîãäà èëè îñòàâëÿåò â ïîêîå, èëè âû÷èñëÿåò â çàâèñèìîñòè îò ôëàãà ÀÂÒÎÂÛ×ÈÑËßÒÜ | |
| stack.push(value); | stack.push(value); |
| break; | break; |
| }*/ | } |
| case OP_GET_ELEMENT__WRITE: | |
| { | |
| value=get_element(last_get_element_name/*not followed by call, not needed really*/, false); | |
| write_assign_lang(value, last_get_element_name); | |
| break; | |
| } | |
| case OP_OBJECT_POOL: | |
| { | |
| local_ops=i.next().ops; | |
| WContext *saved_wcontext=wcontext; | |
| String_UL saved_lang=flang; | |
| flang=String::UL_PASS_APPENDED; | |
| WWrapper local(ValuePtr(0)/*empty*/, wcontext); local.ref(); | |
| wcontext=&local; | |
| execute(*local_ops); | |
| value=wcontext->result().as_value(); | |
| flang=saved_lang; | |
| wcontext=saved_wcontext; | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STRING_POOL: | |
| { | |
| local_ops=i.next().ops; | |
| WContext *saved_wcontext=wcontext; | |
| WWrapper local(ValuePtr(0) /*empty*/, wcontext); local.ref(); | |
| wcontext=&local; | |
| execute(*local_ops); | |
| // from "$a $b" part of expression taking only string value, | |
| // ignoring any other content of wcontext | |
| if(const String& string=wcontext->get_string(&pool())) | |
| value=ValuePtr(new VString(string)); | |
| else | |
| value=ValuePtr(new VVoid); | |
| wcontext=saved_wcontext; | |
| stack.push(value); | |
| break; | |
| } | |
| // CALL | |
| case OP_STORE_PARAM: | |
| { | |
| value=stack.pop().value; | |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value().ptr); | |
| // this op is executed from CALL local_ops only, so may skip the check "method_frame_to_fill==0" | |
| frame->store_param(value); | |
| break; | |
| } | |
| case OP_CURLY_CODE__STORE_PARAM: | |
| case OP_EXPR_CODE__STORE_PARAM: | |
| { | |
| // code | |
| local_ops=i.next().ops; | |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value().ptr); | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " (%d)\n", local_ops->count()); | |
| debug_dump(sapi_info, pool(), 1, *local_ops); | |
| #endif | |
| // 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" | |
| value=ValuePtr(new VJunction(JunctionPtr(new Junction( | |
| get_self(), 0, | |
| method_frame, | |
| rcontext, | |
| op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext, | |
| local_ops)))); | |
| // store param | |
| // this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0 | |
| frame->store_param(value); | |
| break; | |
| } | |
| case OP_PREPARE_TO_CONSTRUCT_OBJECT: | |
| { | |
| wcontext->set_constructing(true); | |
| break; | |
| } | |
| case OP_PREPARE_TO_EXPRESSION: | |
| { | |
| wcontext->set_in_expression(true); | |
| break; | |
| } | |
| case OP_CALL: | |
| case OP_CALL__WRITE: | |
| { | |
| local_ops=i.next().ops; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0); | |
| if(local_ops) | |
| debug_dump(sapi_info, pool(), 1, *local_ops); | |
| debug_printf(sapi_info, "->\n"); | |
| #endif | |
| value=stack.pop().value; | |
| JunctionPtr junction=value->get_junction(); | |
| if(!junction) | |
| throw Exception("parser.runtime", | |
| last_get_element_name, | |
| "(%s) not a method or junction, can not call it", | |
| value->type()); | |
| /* no check needed, code compiled the way that that's impossible | |
| // check: | |
| // that this is method-junction, not a code-junction | |
| // [disabling these contstructions:] | |
| // $junction{code} | |
| // ^junction[] | |
| if(!junction->method) | |
| throw Exception("parser.runtime", | |
| last_get_element_name, | |
| "(%s) is code junction, can not call it", | |
| value->type()); | |
| */ | |
| VMethodFrame frame(pool(), last_get_element_name, *junction, method_frame/*caller*/); frame.ref(); | |
| if(local_ops){ // store param code goes here | |
| stack.push(&frame); // argument for *STORE_PARAM ops | |
| execute(*local_ops); | |
| stack.pop().value; | |
| } | |
| frame.fill_unspecified_params(); | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value* saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| VStateless_class *called_class=frame.junction.self->get_class(); | |
| ValuePtr new_self=get_self(); | |
| if(wcontext->get_constructing()) { | |
| wcontext->set_constructing(false); | |
| if(frame.junction.method->call_type!=Method::CT_STATIC) { | |
| // this is a constructor call | |
| if(ValuePtr value=called_class->create_new_value()) { | |
| // some stateless_class creatable derivates | |
| new_self=value; | |
| } else | |
| throw Exception("parser.runtime", | |
| frame.name(), | |
| "is not a constructor, system class '%s' can be constructed only implicitly", | |
| (char*)called_class->name()->cstr()); | |
| frame.write(new_self, | |
| String::UL_CLEAN // not used, always an object, not string | |
| ); | |
| } else | |
| throw Exception("parser.runtime", | |
| frame.name(), | |
| "method is static and can not be used as constructor"); | |
| } else | |
| new_self=frame.junction.self; | |
| frame.set_self(new_self); | |
| // see OP_PREPARE_TO_EXPRESSION | |
| frame.set_in_expression(wcontext->get_in_expression()); | |
| rcontext=wcontext=&frame; | |
| { | |
| const Method& method=*frame.junction.method; | |
| Method::Call_type call_type= | |
| called_class==new_self.get() ? Method::CT_STATIC : Method::CT_DYNAMIC; | |
| if( | |
| method.call_type==Method::CT_ANY || | |
| method.call_type==call_type) { // allowed call type? | |
| #ifndef PA_DEBUG_NO_STACK_TRACE | |
| try { | |
| #endif | |
| method_frame=&frame; | |
| if(method.native_code) { // native code? | |
| method.check_actual_numbered_params( | |
| *frame.junction.self, | |
| frame.name(), frame.numbered_params()); | |
| method.native_code( | |
| *this, | |
| frame.name(), frame.numbered_params()); // execute it | |
| } else // parser code, execute it | |
| recoursion_checked_execute(frame.name(), *method.parser_code); | |
| #ifndef PA_DEBUG_NO_STACK_TRACE | |
| } catch(...) { | |
| // record it to stack trace | |
| exception_trace.push(frame.name()); | |
| rethrow; | |
| } | |
| #endif | |
| } else | |
| throw Exception("parser.runtime", | |
| frame.name(), | |
| "is not allowed to be called %s", | |
| call_type==Method::CT_STATIC?"statically":"dynamically"); | |
| } | |
| StringOrValue result=wcontext->result(); | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| if(op.code==OP_CALL__WRITE) { | |
| write_assign_lang(result, last_get_element_name); | |
| } else { // OP_CALL | |
| stack.push(result.as_value()); | |
| } | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, "<-returned"); | |
| #endif | |
| break; | |
| } | |
| // expression ops: unary | |
| case OP_NEG: | |
| { | |
| a=stack.pop().value; | |
| value=ValuePtr(new VDouble(-a->as_double())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_INV: | |
| { | |
| a=stack.pop().value; | |
| value=ValuePtr(new VDouble(~a->as_int())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NOT: | |
| { | |
| a=stack.pop().value; | |
| value=ValuePtr(new VBool(!a->as_bool())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_DEF: | |
| { | |
| a=stack.pop().value; | |
| value=ValuePtr(new VBool(a->is_defined())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_IN: | |
| { | |
| /// @test String::cmp | |
| a=stack.pop().value; | |
| const char* path=a->as_string(&pool())->cstr(); | |
| value=ValuePtr(new VBool( | |
| request_info.uri && strncmp(path, request_info.uri, strlen(path))==0)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_FEXISTS: | |
| { | |
| a=stack.pop().value; | |
| value=ValuePtr(new VBool( | |
| file_readable(absolute(a->as_string(&pool()))))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_DEXISTS: | |
| { | |
| a=stack.pop().value; | |
| value=ValuePtr(new VBool( | |
| dir_readable(absolute(a->as_string(&pool()))))); | |
| stack.push(value); | |
| break; | |
| } | |
| // expression ops: binary | |
| case OP_SUB: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VDouble(a->as_double() - b->as_double())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_ADD: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VDouble(a->as_double() + b->as_double())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_MUL: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VDouble(a->as_double() * b->as_double())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_DIV: | |
| { | |
| b=stack.pop().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(&pool()); | |
| throw Exception("number.zerodivision", | |
| problem_source, | |
| "Division by zero"); | |
| } | |
| value=ValuePtr(new VDouble(a_double / b_double)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_MOD: | |
| { | |
| b=stack.pop().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(&pool()); | |
| throw Exception("number.zerodivision", | |
| problem_source, | |
| "Modulus by zero"); | |
| } | |
| value=ValuePtr(new VDouble(fmod(a_double, b_double))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_INTDIV: | |
| { | |
| b=stack.pop().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(&pool()); | |
| throw Exception("number.zerodivision", | |
| problem_source, | |
| "Division by zero"); | |
| } | |
| value=ValuePtr(new VInt(a_int / b_int)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_BIN_SL: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VInt( | |
| a->as_int() << | |
| b->as_int())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_BIN_SR: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VInt( | |
| a->as_int() >> | |
| b->as_int())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_BIN_AND: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VInt( | |
| a->as_int() & | |
| b->as_int())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_BIN_OR: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VInt( | |
| a->as_int() | | |
| b->as_int())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_BIN_XOR: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VInt( | |
| a->as_int() ^ | |
| b->as_int())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_LOG_AND: | |
| { | |
| local_ops=stack.pop().ops; a=stack.pop().value; | |
| bool result; | |
| if(a->as_bool()) { | |
| execute(*local_ops); | |
| b=stack.pop().value; | |
| result=b->as_bool(); | |
| } else | |
| result=false; | |
| value=ValuePtr(new VBool(result)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_LOG_OR: | |
| { | |
| local_ops=stack.pop().ops; a=stack.pop().value; | |
| bool result; | |
| if(a->as_bool()) | |
| result=true; | |
| else { | |
| execute(*local_ops); | |
| b=stack.pop().value; | |
| result=b->as_bool(); | |
| } | |
| value=ValuePtr(new VBool(result)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_LOG_XOR: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(a->as_bool() ^ b->as_bool())); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_LT: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| double result=a->as_double() - b->as_double(); | |
| value=ValuePtr(new VBool(result < 0.0)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_GT: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| double result=a->as_double() - b->as_double(); | |
| value=ValuePtr(new VBool(result > 0.0)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_LE: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| double result=a->as_double() - b->as_double(); | |
| value=ValuePtr(new VBool(result <= 0.0)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_GE: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| double result=a->as_double() - b->as_double(); | |
| value=ValuePtr(new VBool(result >= 0.0)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_EQ: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| double result=a->as_double() - b->as_double(); | |
| value=ValuePtr(new VBool(result == 0.0)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_NE: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| double result=a->as_double() - b->as_double(); | |
| value=ValuePtr(new VBool(result != 0.0)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_LT: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(*a->as_string(&pool()) < *b->as_string(&pool()))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_GT: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(*a->as_string(&pool()) > *b->as_string(&pool()))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_LE: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(*a->as_string(&pool()) <= *b->as_string(&pool()))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_GE: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(*a->as_string(&pool()) >= *b->as_string(&pool()))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_EQ: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(*a->as_string(&pool()) == *b->as_string(&pool()))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_NE: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(*a->as_string(&pool()) != *b->as_string(&pool()))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_IS: | |
| { | |
| b=stack.pop().value; a=stack.pop().value; | |
| value=ValuePtr(new VBool(a->is(b->as_string(&pool())->cstr()))); | |
| stack.push(value); | |
| break; | |
| } | |
| default: | default: |
| printf("\tTODO\n"); | throw Exception(Exception::undefined_type, |
| break; | Exception::undefined_source, |
| "invalid opcode %d", op.code); | |
| } | |
| } | |
| } | |
| /** | |
| @todo cache|prepare junctions | |
| @bug ^superbase:method would dynamically call ^base:method if there is any | |
| */ | |
| ValuePtr Request::get_element(String* & remember_name, bool can_call_operator) { | |
| const String& name=stack.pop().string(); remember_name=name; | |
| ValuePtr ncontext=stack.pop().value; | |
| ValuePtr value; | |
| if(can_call_operator) { | |
| if(MethodPtr method=main_class->get_method(name)) // looking operator of that name FIRST | |
| value=ValuePtr(new VJunction(JunctionPtr(new Junction( | |
| main_class, method.get(), 0,0,0, ArrayOperationPtr(0))))); | |
| } | |
| if(!value) { | |
| if(!wcontext->get_constructing() // not constructing | |
| && 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 | |
| if(ValuePtr base=get_self()->base()) { // doing DYNAMIC call | |
| Temp_derived temp_derived(*base, 0); // temporarily prevent go-back-down virtual calls | |
| value=base->get_element(name, *base, false); // virtual-up lookup starting from parent | |
| goto value_ready; | |
| } | |
| } | |
| if(!value) | |
| value=ncontext->get_element(name, *ncontext, false); | |
| if(value && wcontext->get_constructing()) | |
| if(JunctionPtr junction=value->get_junction()) { | |
| if(junction->self->get_class()!=ncontext.get()) | |
| throw Exception("parser.runtime", | |
| name, | |
| "constructor must be declared in class '%s'", | |
| ncontext->get_class()->name_cstr()); | |
| } | |
| value_ready: | |
| if(value) | |
| value=process_to_value(value); // process possible code-junction | |
| else | |
| value=ValuePtr(new VVoid); | |
| return value; | |
| } | |
| /** @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(ValuePtr input_value, bool intercept_string) { | |
| StringOrValue result; | |
| JunctionPtr junction=input_value->get_junction(); | |
| if(junction && junction->code) { // is it a code-junction? | |
| // process it | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, "ja->\n"); | |
| #endif | |
| if(!junction->method_frame) | |
| throw Exception("parser.runtime", | |
| Exception::undefined_source, | |
| "junction used outside of context"); | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value* saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| 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, | |
| // BUT intercepts string writes | |
| VCodeFrame local(*junction->wcontext, junction->wcontext); local.ref(); | |
| wcontext=&local; | |
| // execute it | |
| recoursion_checked_execute(Exception::undefined_source/*result_name*/, *junction->code); | |
| // CodeFrame soul: | |
| // string writes were intercepted | |
| // returning them as the result of getting code-junction | |
| result.set_string(wcontext->get_string(&pool())); | |
| } else { | |
| // plain wwrapper | |
| WWrapper local(ValuePtr(0)/*empty*/, wcontext); local.ref(); | |
| wcontext=&local; | |
| // execute it | |
| recoursion_checked_execute(Exception::undefined_source/*result_name*/, *junction->code); | |
| result=wcontext->result(); | |
| } | } |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, "<-ja returned"); | |
| #endif | |
| } else { | |
| result.set_value(input_value); | |
| } | |
| return result; | |
| } | |
| const String& Request::execute_method(VMethodFrame& amethod_frame, const Method& method) { | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value* saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| // initialize contexts | |
| rcontext=wcontext=method_frame=&amethod_frame; | |
| // execute! | |
| execute(*method.parser_code); | |
| // result | |
| const String& result=wcontext->result().as_string(&pool()); | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| // return | |
| return result; | |
| } | |
| const String& Request::execute_method(ValuePtr aself, | |
| const Method& method, Vconst String& optional_param, | |
| bool do_return_string) { | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value* saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| Junction local_junction(aself, &method, 0,0,0, ArrayOperationPtr(0)); | |
| VMethodFrame local_frame(pool(), method.name, local_junction, method_frame/*caller*/); local_frame.ref(); | |
| if(optional_param && local_frame.can_store_param()) { | |
| local_frame.store_param(optional_param); | |
| local_frame.fill_unspecified_params(); | |
| } | } |
| local_frame.set_self(aself); | |
| rcontext=wcontext=method_frame=&local_frame; | |
| // prevent non-string writes for better error reporting | |
| if(do_return_string) | |
| wcontext->write(pool(), ValuePtr(&local_frame)); | |
| // execute! | |
| execute(*method.parser_code); | |
| // result | |
| const String& result(0); | |
| if(do_return_string) | |
| result=wcontext->result().as_string(&pool()); | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| return result; | |
| } | |
| Request::Execute_nonvirtual_method_result | |
| Request::execute_nonvirtual_method(VStateless_class& aclass, | |
| const String& method_name, Vconst String& 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(ValuePtr(&aclass), *result.method, optional_param, | |
| do_return_string); | |
| return result; | |
| } | |
| const String& Request::execute_virtual_method(ValuePtr aself, | |
| const String& method_name) { | |
| if(ValuePtr value=aself->get_element(method_name, *aself, false)) | |
| if(JunctionPtr junction=value->get_junction()) | |
| if(const Method *method=junction->method) | |
| return execute_method(aself, *method, V0/*no params*/, true); | |
| return 0; | |
| } | } |