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| version 1.201, 2001/10/31 13:07:35 | version 1.315, 2006/04/09 13:38:47 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: executor part of request class. | Parser: executor part of request class. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| $Id$ | |
| */ | */ |
| static const char * const IDENT_EXECUTE_C="$Date$"; | |
| #include "pa_opcode.h" | #include "pa_opcode.h" |
| #include "pa_array.h" | #include "pa_array.h" |
| #include "pa_request.h" | #include "pa_request.h" |
| Line 25 | Line 25 |
| //#define DEBUG_EXECUTE | //#define DEBUG_EXECUTE |
| const uint ANTI_ENDLESS_EXECUTE_RECOURSION=200; | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| char *opcode_name[]={ | char *opcode_name[]={ |
| // literals | // literals |
| "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", | "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", |
| "NESTED_CODE", | |
| // actions | // actions |
| "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", | "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", |
| "GET_CLASS", | "GET_CLASS", |
| "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", | "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", |
| "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", | "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", |
| "GET_ELEMENT", "GET_ELEMENT__WRITE", | "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE", |
| "CREATE_EWPOOL", "REDUCE_EWPOOL", | "OBJECT_POOL", "STRING_POOL", |
| "CREATE_SWPOOL", "REDUCE_SWPOOL", | |
| "GET_METHOD_FRAME", | |
| "STORE_PARAM", | "STORE_PARAM", |
| "PREPARE_TO_CONSTRUCT_OBJECT", "CALL", | "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION", |
| "CALL", "CALL__WRITE", | |
| // expression ops: unary | // expression ops: unary |
| "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS", | "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS", |
| // expression ops: binary | // expression ops: binary |
| "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV", | "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV", |
| "BIN_SL", "BIN_SR", | |
| "BIN_AND", "BIN_OR", "BIN_XOR", | "BIN_AND", "BIN_OR", "BIN_XOR", |
| "LOG_AND", "LOG_OR", "LOG_XOR", | "LOG_AND", "LOG_OR", "LOG_XOR", |
| "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE", | "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE", |
| Line 55 char *opcode_name[]={ | Line 54 char *opcode_name[]={ |
| "IS" | "IS" |
| }; | }; |
| void va_debug_printf(Pool& pool, const char *fmt,va_list args) { | void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) { |
| char buf[MAX_STRING]; | char buf[MAX_STRING]; |
| vsnprintf(buf, MAX_STRING, fmt, args); | vsnprintf(buf, MAX_STRING, fmt, args); |
| SAPI::log(pool, "%s", buf); | SAPI::log(sapi_info, "%s", buf); |
| } | } |
| void debug_printf(Pool& pool, const char *fmt, ...) { | void debug_printf(SAPI_Info& sapi_info, const char* fmt, ...) { |
| va_list args; | va_list args; |
| va_start(args,fmt); | va_start(args, fmt); |
| va_debug_printf(pool,fmt,args); | va_debug_printf(sapi_info, fmt, args); |
| va_end(args); | va_end(args); |
| } | } |
| void debug_dump(Pool& pool, int level, const Array& ops) { | void debug_dump(SAPI_Info& sapi_info, int level, ArrayOperation& ops) { |
| Array_iter i(ops); | Array_iterator<Operation> i(ops); |
| while(i.has_next()) { | while(i.has_next()) { |
| Operation op; | OPCODE opcode=i.next().code; |
| op.cast=i.next(); | |
| if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { | if(opcode==OP_VALUE || opcode==OP_STRING__WRITE) { |
| Value *value=static_cast<Value *>(i.next()); | Operation::Origin origin=i.next().origin; |
| debug_printf(pool, | Value& value=*i.next().value; |
| debug_printf(sapi_info, | |
| "%*s%s" | "%*s%s" |
| " \"%s\" %s", | " \"%s\" %s", |
| level*4, "", opcode_name[op.code], | level*4, "", opcode_name[opcode], |
| value->get_string()->cstr(), value->type()); | value.get_string()->cstr(), value.type()); |
| continue; | continue; |
| } | } |
| debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]); | debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[opcode]); |
| switch(op.code) { | switch(opcode) { |
| case OP_CURLY_CODE__STORE_PARAM: | case OP_CURLY_CODE__STORE_PARAM: |
| case OP_EXPR_CODE__STORE_PARAM: | case OP_EXPR_CODE__STORE_PARAM: |
| case OP_CURLY_CODE__CONSTRUCT: | case OP_CURLY_CODE__CONSTRUCT: |
| const Array *local_ops=reinterpret_cast<const Array *>(i.next()); | case OP_NESTED_CODE: |
| debug_dump(pool, level+1, *local_ops); | case OP_OBJECT_POOL: |
| case OP_STRING_POOL: | |
| case OP_CALL: | |
| case OP_CALL__WRITE: | |
| if(ArrayOperation* local_ops=i.next().ops) | |
| debug_dump(sapi_info, level+1, *local_ops); | |
| } | } |
| } | } |
| } | } |
| #endif | #endif |
| #define PUSH(value) stack.push(value) | // Request |
| #define POP() static_cast<Value *>(stack.pop()) | |
| #define POP_NAME() static_cast<Value *>(stack.pop())->as_string() | void Request::execute(ArrayOperation& ops) { |
| register Stack<StackItem>& stack=this->stack; // helps a lot on MSVC: 'esi' | |
| void Request::execute(const Array& ops) { | |
| // _asm int 3; | const String* debug_name=0; Operation::Origin debug_origin={0, 0, 0}; |
| #ifdef DEBUG_EXECUTE | try{ |
| debug_printf(pool(), "source----------------------------\n"); | #ifdef DEBUG_EXECUTE |
| debug_dump(pool(), 0, ops); | debug_printf(sapi_info, "source----------------------------\n"); |
| debug_printf(pool(), "execution-------------------------\n"); | debug_dump(sapi_info, 0, ops); |
| debug_printf(sapi_info, "execution-------------------------\n"); | |
| #endif | #endif |
| for(Array_iterator<Operation> i(ops); i.has_next(); ) { | |
| if(get_skip()) | |
| return; | |
| if(get_interrupted()) { | |
| set_interrupted(false); | |
| throw Exception("parser.interrupted", | |
| 0, | |
| "execution stopped"); | |
| } | |
| OPCODE opcode=i.next().code; | |
| Array_iter i(ops); | |
| while(i.has_next()) { | |
| Operation op; | |
| op.cast=i.next(); | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]); | debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[opcode]); |
| #endif | #endif |
| Value *value; | switch(opcode) { |
| Value *a; Value *b; | |
| switch(op.code) { | |
| // param in next instruction | // param in next instruction |
| case OP_VALUE: | case OP_VALUE: |
| { | { |
| value=static_cast<Value *>(i.next()); | debug_origin=i.next().origin; |
| Value& value=*i.next().value; | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type()); | debug_printf(sapi_info, " \"%s\" %s", value.get_string()->cstr(), value.type()); |
| #endif | #endif |
| PUSH(value); | stack.push(value); |
| break; | |
| } | |
| case OP_CURLY_CODE__STORE_PARAM: | |
| case OP_EXPR_CODE__STORE_PARAM: | |
| { | |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); | |
| // code | |
| const Array *local_ops=reinterpret_cast<const Array *>(i.next()); | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), " (%d)\n", local_ops->size()); | |
| debug_dump(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" | |
| Junction& j=*NEW Junction(pool(), | |
| *self, 0, 0, | |
| root, | |
| rcontext, | |
| op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext, | |
| local_ops); | |
| value=NEW VJunction(j); | |
| // store param | |
| frame->store_param(frame->name(), value); | |
| break; | break; |
| } | } |
| case OP_GET_CLASS: | case OP_GET_CLASS: |
| Line 164 void Request::execute(const Array& ops) | Line 144 void Request::execute(const Array& ops) |
| // maybe they do ^class:method[] call, remember the fact | // maybe they do ^class:method[] call, remember the fact |
| wcontext->set_somebody_entered_some_class(); | wcontext->set_somebody_entered_some_class(); |
| const String& name=POP_NAME(); | const String& name=stack.pop().string(); |
| value=static_cast<Value *>(classes().get(name)); | Value* value=classes().get(name); |
| if(!value) | if(!value) |
| throw Exception(0,0, | throw Exception("parser.runtime", |
| &name, | &name, |
| "class is undefined"); | "class is undefined"); |
| PUSH(value); | stack.push(*value); |
| break; | break; |
| } | } |
| // OP_WITH | // OP_WITH |
| case OP_WITH_ROOT: | case OP_WITH_ROOT: |
| { | { |
| PUSH(root); | stack.push(*method_frame); |
| break; | break; |
| } | } |
| case OP_WITH_SELF: | case OP_WITH_SELF: |
| { | { |
| PUSH(self); | stack.push(get_self()); |
| break; | break; |
| } | } |
| case OP_WITH_READ: | case OP_WITH_READ: |
| { | { |
| PUSH(rcontext); | stack.push(*rcontext); |
| break; | break; |
| } | } |
| case OP_WITH_WRITE: | case OP_WITH_WRITE: |
| { | { |
| PUSH(wcontext); | if(wcontext==method_frame) |
| throw Exception("parser.runtime", | |
| 0, | |
| "$.name outside of $name[...]"); | |
| stack.push(*wcontext); | |
| break; | break; |
| } | } |
| // OTHER ACTIONS BUT WITHs | // OTHER ACTIONS BUT WITHs |
| case OP_CONSTRUCT_VALUE: | case OP_CONSTRUCT_VALUE: |
| { | { |
| value=POP(); | Value& value=stack.pop().value(); |
| const String& name=POP_NAME(); | const String& name=stack.pop().string(); debug_name=&name; |
| Value *ncontext=POP(); | Value& ncontext=stack.pop().value(); |
| ncontext->put_element(name, value); | put_element(ncontext, name, value); |
| value->set_name(name); | |
| break; | break; |
| } | } |
| case OP_CONSTRUCT_EXPR: | case OP_CONSTRUCT_EXPR: |
| { | { |
| value=POP(); | // see OP_PREPARE_TO_EXPRESSION |
| const String& name=POP_NAME(); | wcontext->set_in_expression(false); |
| Value *ncontext=POP(); | |
| ncontext->put_element(name, value->as_expr_result()); | Value& expr=stack.pop().value(); |
| value->set_name(name); | const String& name=stack.pop().string(); debug_name=&name; |
| Value& ncontext=stack.pop().value(); | |
| Value& value=expr.as_expr_result(); | |
| put_element(ncontext, name, value); | |
| break; | break; |
| } | } |
| case OP_CURLY_CODE__CONSTRUCT: | case OP_CURLY_CODE__CONSTRUCT: |
| { | { |
| const Array *local_ops=reinterpret_cast<const Array *>(i.next()); | ArrayOperation& local_ops=*i.next().ops; |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), " (%d)\n", local_ops->size()); | debug_printf(sapi_info, " (%d)\n", local_ops.count()); |
| debug_dump(pool(), 1, *local_ops); | debug_dump(sapi_info, 1, local_ops); |
| #endif | #endif |
| Junction& j=*NEW Junction(pool(), | Value& value=*new VJunction( |
| *self, 0, 0, | get_self(), 0, |
| root, | method_frame, |
| rcontext, | rcontext, |
| wcontext, | wcontext, |
| local_ops); | &local_ops); |
| value=NEW VJunction(j); | const String& name=stack.pop().string(); debug_name=&name; |
| const String& name=POP_NAME(); | Value& ncontext=stack.pop().value(); |
| Value *ncontext=POP(); | if(const VJunction* vjunction=ncontext.put_element(ncontext, name, &value, false)) |
| ncontext->put_element(name, value); | if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT) |
| value->set_name(name); | throw Exception("parser.runtime", |
| 0, | |
| "property value can not be code, use [] or () brackets"); | |
| break; | |
| } | |
| case OP_NESTED_CODE: | |
| { | |
| ArrayOperation& local_ops=*i.next().ops; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " (%d)\n", local_ops.count()); | |
| debug_dump(sapi_info, 1, local_ops); | |
| #endif | |
| stack.push(local_ops); | |
| break; | break; |
| } | } |
| case OP_WRITE_VALUE: | case OP_WRITE_VALUE: |
| { | { |
| value=POP(); | Value& value=stack.pop().value(); |
| write_assign_lang(*value); | write_assign_lang(value); |
| // forget the fact they've entered some ^object.method[]. | |
| // see OP_GET_ELEMENT | |
| wcontext->set_somebody_entered_some_object(false); | |
| break; | break; |
| } | } |
| case OP_WRITE_EXPR_RESULT: | case OP_WRITE_EXPR_RESULT: |
| { | { |
| value=POP(); | Value& value=stack.pop().value(); |
| write_expr_result(*value->as_expr_result()); | write_no_lang(value.as_expr_result()); |
| // must be after write(result) and | |
| // see OP_PREPARE_TO_EXPRESSION | |
| wcontext->set_in_expression(false); | |
| break; | break; |
| } | } |
| case OP_STRING__WRITE: | case OP_STRING__WRITE: |
| { | { |
| VString *vstring=static_cast<VString *>(i.next()); | i.next(); // ignore origin |
| Value* value=i.next().value; | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), " \"%s\"", vstring->string().cstr()); | debug_printf(sapi_info, " \"%s\"", value->get_string()->cstr()); |
| #endif | #endif |
| write_no_lang(vstring->string()); | write_no_lang(*value->get_string()); |
| break; | break; |
| } | } |
| case OP_GET_ELEMENT_OR_OPERATOR: | |
| { | |
| const String& name=stack.pop().string(); debug_name=&name; | |
| Value& ncontext=stack.pop().value(); | |
| Value& value=get_element(ncontext, name, true); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_GET_ELEMENT: | case OP_GET_ELEMENT: |
| { | { |
| // maybe they do ^object.method[] call, remember the fact | const String& name=stack.pop().string(); debug_name=&name; |
| wcontext->set_somebody_entered_some_object(true); | Value& ncontext=stack.pop().value(); |
| Value& value=get_element(ncontext, name, false); | |
| //_asm int 3; | stack.push(value); |
| value=get_element(); | |
| PUSH(value); | |
| break; | break; |
| } | } |
| case OP_GET_ELEMENT__WRITE: | case OP_GET_ELEMENT__WRITE: |
| { | { |
| value=get_element(); | const String& name=stack.pop().string(); debug_name=&name; |
| write_assign_lang(*value); | Value& ncontext=stack.pop().value(); |
| Value& value=get_element(ncontext, name, false); | |
| write_assign_lang(value); | |
| break; | break; |
| } | } |
| case OP_CREATE_EWPOOL: | case OP_OBJECT_POOL: |
| { | |
| PUSH(wcontext); | |
| PUSH((void *)flang); | |
| flang=String::UL_PASS_APPENDED; | |
| wcontext=NEW WWrapper(pool(), 0 /*empty*/); | |
| break; | |
| } | |
| case OP_REDUCE_EWPOOL: | |
| { | { |
| value=wcontext->result(); | ArrayOperation& local_ops=*i.next().ops; |
| flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP())); | |
| wcontext=static_cast<WContext *>(POP()); | WContext *saved_wcontext=wcontext; |
| PUSH(value); | String::Language saved_lang=flang; |
| flang=String::L_PASS_APPENDED; | |
| WWrapper local(0/*empty*/, wcontext); | |
| wcontext=&local; | |
| execute(local_ops); | |
| stack.push(wcontext->result().as_value()); | |
| flang=saved_lang; | |
| wcontext=saved_wcontext; | |
| break; | break; |
| } | } |
| case OP_CREATE_SWPOOL: | case OP_STRING_POOL: |
| { | |
| PUSH(wcontext); | |
| wcontext=NEW WWrapper(pool(), 0 /*empty*/); | |
| break; | |
| } | |
| case OP_REDUCE_SWPOOL: | |
| { | { |
| ArrayOperation& local_ops=*i.next().ops; | |
| WContext *saved_wcontext=wcontext; | |
| WWrapper local(0 /*empty*/, wcontext); | |
| wcontext=&local; | |
| execute(local_ops); | |
| Value* value; | |
| // from "$a $b" part of expression taking only string value, | // from "$a $b" part of expression taking only string value, |
| // ignoring any other content of wcontext | // ignoring any other content of wcontext |
| const String *string=wcontext->get_string(); | if(const String* string=wcontext->get_string()) |
| Value *value; | value=new VString(*string); |
| if(string) | |
| value=NEW VString(*string); | |
| else | else |
| NEW VVoid(pool()); | value=new VVoid; |
| wcontext=static_cast<WContext *>(POP()); | stack.push(*value); |
| PUSH(value); | |
| wcontext=saved_wcontext; | |
| break; | break; |
| } | } |
| // CALL | // CALL |
| case OP_GET_METHOD_FRAME: | case OP_STORE_PARAM: |
| { | { |
| value=POP(); | Value& value=stack.pop().value(); |
| VMethodFrame& frame=stack.top_value().method_frame(); | |
| // info: | // this op is executed from CALL local_ops only, so may skip the check "method_frame_to_fill==0" |
| // code compiled so that this one's always method-junction, | frame.store_param(value); |
| // not a code-junction | |
| Junction *junction=value->get_junction(); | |
| if(!junction) | |
| throw Exception(0, 0, | |
| &value->name(), | |
| "(%s) not a method or junction, can not call it", | |
| value->type()); | |
| VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction); | |
| PUSH(frame); | |
| break; | break; |
| } | } |
| case OP_STORE_PARAM: | case OP_CURLY_CODE__STORE_PARAM: |
| case OP_EXPR_CODE__STORE_PARAM: | |
| { | { |
| value=POP(); | // code |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); | ArrayOperation& local_ops=*i.next().ops; |
| frame->store_param(frame->name(), value); | VMethodFrame& frame=stack.top_value().method_frame(); |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, " (%d)\n", local_ops.count()); | |
| debug_dump(sapi_info, 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& value=*new VJunction( | |
| get_self(), 0, | |
| method_frame, | |
| rcontext, | |
| opcode==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; | break; |
| } | } |
| Line 352 void Request::execute(const Array& ops) | Line 376 void Request::execute(const Array& ops) |
| wcontext->set_constructing(true); | wcontext->set_constructing(true); |
| break; | break; |
| } | } |
| case OP_PREPARE_TO_EXPRESSION: | |
| { | |
| wcontext->set_in_expression(true); | |
| break; | |
| } | |
| case OP_CALL: | case OP_CALL: |
| case OP_CALL__WRITE: | |
| { | { |
| //is_debug_junction=true; | |
| ArrayOperation* local_ops=i.next().ops; | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), "->\n"); | debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0); |
| if(local_ops) | |
| debug_dump(sapi_info, 1, *local_ops); | |
| debug_printf(sapi_info, "->\n"); | |
| #endif | #endif |
| VMethodFrame *frame=static_cast<VMethodFrame *>(POP()); | Value& value=stack.pop().value(); |
| frame->fill_unspecified_params(); | |
| PUSH(self); | Junction* junction=value.get_junction(); |
| PUSH(root); | if(!junction) { |
| PUSH(rcontext); | if(value.is("void")) |
| PUSH(wcontext); | 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()); | |
| } | |
| /* 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", | |
| "is '%s', it is code junction, can not call it", | |
| value.type()); | |
| */ | |
| VMethodFrame frame(*junction, method_frame/*caller*/); | |
| 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(); | VStateless_class& called_class=*frame.junction.self.get_class(); |
| Value* new_self; | |
| if(wcontext->get_constructing()) { | if(wcontext->get_constructing()) { |
| wcontext->set_constructing(false); | wcontext->set_constructing(false); |
| if(frame->junction.method->call_type!=Method::CT_STATIC) { | new_self=&get_self(); |
| if(frame.junction.method->call_type!=Method::CT_STATIC) { | |
| // this is a constructor call | // this is a constructor call |
| if(Value *value=called_class->create_new_value(pool())) { | HashStringValue& new_object_fields=*new HashStringValue(); |
| // some stateless_object creatable derivates | if(Value* value=called_class.create_new_value(fpool, new_object_fields)) { |
| self=value; | // some stateless_class creatable derivates |
| } else { | new_self=value; |
| // stateful object | } else |
| self=NEW VObject(pool(), *called_class); | throw Exception("parser.runtime", |
| } | 0, //&frame.name(), |
| frame->write(*self, | "is not a constructor, system class '%s' can be constructed only implicitly", |
| String::UL_CLEAN // not used, always an object, not string | called_class.name().cstr()); |
| frame.write(*new_self, | |
| String::L_CLEAN // not used, always an object, not string | |
| ); | ); |
| } else | } else |
| throw Exception(0, 0, | throw Exception("parser.runtime", |
| &frame->name(), | 0, //&frame.name(), |
| "method is static and can not be used as constructor"); | "method is static and can not be used as constructor"); |
| } else { | } else |
| // this is not constructor call | new_self=&frame.junction.self; |
| // not ^name.method call, name:method call; and | frame.set_self(*new_self); |
| // is context object or class & is it my class or my parent's class and? | |
| VStateless_class *read_class=rcontext->get_class(); | |
| if( | |
| !(wcontext->get_somebody_entered_some_object() && | |
| !wcontext->get_somebody_entered_some_class()) && | |
| read_class && read_class->is_or_derived_from(*called_class)) // yes | |
| self=rcontext; // dynamic call | |
| else // no, not me or relative of mine (=total stranger) | |
| self=&frame->junction.self; // static call | |
| } | |
| frame->set_self(*self); | // see OP_PREPARE_TO_EXPRESSION |
| root=rcontext=wcontext=frame; | frame.set_in_expression(wcontext->get_in_expression()); |
| rcontext=wcontext=&frame; | |
| { | { |
| // take object or class from any wrappers | const Method& method=*frame.junction.method; |
| // and substitute class alias to the class they are called AS | |
| Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass); | |
| const Method& method=*frame->junction.method; | |
| Method::Call_type call_type= | Method::Call_type call_type= |
| called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC; | &called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC; |
| if( | if( |
| method.call_type==Method::CT_ANY || | method.call_type==Method::CT_ANY || |
| method.call_type==call_type) { // allowed call type? | method.call_type==call_type) { // allowed call type? |
| try { | method_frame=&frame; |
| if(method.native_code) { // native code? | if(method.native_code) { // native code? |
| method.check_actual_numbered_params( | method.check_actual_numbered_params( |
| frame->junction.self, | frame.junction.self, |
| frame->name(), frame->numbered_params()); | /*frame.name(), */frame.numbered_params()); |
| method.native_code( | method.native_code( |
| *this, | *this, |
| frame->name(), frame->numbered_params()); // execute it | *frame.numbered_params()); // execute it |
| } else { // parser code | } else // parser code, execute it |
| if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) { | recoursion_checked_execute(*method.parser_code); |
| anti_endless_execute_recoursion=0; // give @exception a chance | |
| throw Exception(0, 0, | |
| &frame->name(), | |
| "endless recursion detected"); | |
| } | |
| execute(*method.parser_code); // execute it | |
| anti_endless_execute_recoursion--; | |
| } | |
| } catch(...) { | |
| // record it to stack trace | |
| trace.push((void *)&frame->name()); | |
| /*re*/throw; | |
| } | |
| } else | } else |
| throw Exception(0, 0, | throw Exception("parser.runtime", |
| &frame->name(), | 0, //&frame.name(), |
| "is not allowed to be called %s", | "is not allowed to be called %s", |
| call_type==Method::CT_STATIC?"statically":"dynamically"); | call_type==Method::CT_STATIC?"statically":"dynamically"); |
| } | } |
| value=wcontext->result(); | StringOrValue result=wcontext->result(); |
| wcontext=static_cast<WContext *>(POP()); | |
| rcontext=POP(); | |
| root=POP(); | |
| self=static_cast<VAliased *>(POP()); | |
| PUSH(value); | wcontext=saved_wcontext; |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| if(opcode==OP_CALL__WRITE) { | |
| write_assign_lang(result); | |
| } else { // OP_CALL | |
| stack.push(result.as_value()); | |
| } | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), "<-returned"); | debug_printf(sapi_info, "<-returned"); |
| #endif | #endif |
| //is_debug_junction=false; | |
| break; | break; |
| } | } |
| // expression ops: unary | // expression ops: unary |
| case OP_NEG: | case OP_NEG: |
| { | { |
| Value *operand=POP(); | Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), -operand->as_double()); | Value& value=*new VDouble(-a.as_double()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_INV: | case OP_INV: |
| { | { |
| Value *operand=POP(); | Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), ~operand->as_int()); | Value& value=*new VDouble(~a.as_int()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_NOT: | case OP_NOT: |
| { | { |
| Value *operand=POP(); | Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), !operand->as_bool()); | Value& value=*new VBool(!a.as_bool()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_DEF: | case OP_DEF: |
| { | { |
| Value *operand=POP(); | Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), operand->is_defined()); | Value& value=*new VBool(a.is_defined()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_IN: | case OP_IN: |
| { | { |
| /// @test String::cmp | Value& a=stack.pop().value(); |
| Value *operand=POP(); | const String& path=a.as_string(); |
| const char *path=operand->as_string().cstr(); | Value& value=*new VBool(request_info.uri && *request_info.uri && path.this_starts(request_info.uri)); |
| value=NEW VBool(pool(), | stack.push(value); |
| info.uri && strncmp(path, info.uri, strlen(path))==0); | |
| PUSH(value); | |
| break; | break; |
| } | } |
| case OP_FEXISTS: | case OP_FEXISTS: |
| { | { |
| Value *operand=POP(); | Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), | Value& value=*new VBool(file_exist(absolute(a.as_string()))); |
| file_readable(absolute(operand->as_string()))); | stack.push(value); |
| PUSH(value); | |
| break; | break; |
| } | } |
| case OP_DEXISTS: | case OP_DEXISTS: |
| { | { |
| Value *operand=POP(); | Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), | Value& value=*new VBool(dir_exists(absolute(a.as_string()))); |
| dir_readable(absolute(operand->as_string()))); | stack.push(value); |
| PUSH(value); | |
| break; | break; |
| } | } |
| // expression ops: binary | // expression ops: binary |
| case OP_SUB: | case OP_SUB: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), a->as_double() - b->as_double()); | Value& value=*new VDouble(a.as_double() - b.as_double()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_ADD: | case OP_ADD: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), a->as_double() + b->as_double()); | Value& value=*new VDouble(a.as_double() + b.as_double()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_MUL: | case OP_MUL: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), a->as_double() * b->as_double()); | Value& value=*new VDouble(a.as_double() * b.as_double()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_DIV: | case OP_DIV: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| double a_double=a->as_double(); | double a_double=a.as_double(); |
| double b_double=b->as_double(); | double b_double=b.as_double(); |
| if(b_double == 0) { | if(b_double == 0) { |
| const String *problem_source=&b->as_string(); | //const String* problem_source=b.as_string(); |
| #ifndef NO_STRING_ORIGIN | throw Exception("number.zerodivision", |
| if(!problem_source->origin().file) | 0, //problem_source, |
| problem_source=&b->name(); | |
| #endif | |
| throw Exception(0, 0, | |
| problem_source, | |
| "Division by zero"); | "Division by zero"); |
| } | } |
| value=NEW VDouble(pool(), a_double / b_double); | Value& value=*new VDouble(a_double / b_double); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_MOD: | case OP_MOD: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| double a_double=a->as_double(); | double a_double=a.as_double(); |
| double b_double=b->as_double(); | double b_double=b.as_double(); |
| if(b_double == 0) { | if(b_double == 0) { |
| const String *problem_source=&b->as_string(); | //const String* problem_source=b.as_string(); |
| #ifndef NO_STRING_ORIGIN | throw Exception("number.zerodivision", |
| if(!problem_source->origin().file) | 0, //problem_source, |
| problem_source=&b->name(); | |
| #endif | |
| throw Exception(0, 0, | |
| problem_source, | |
| "Modulus by zero"); | "Modulus by zero"); |
| } | } |
| value=NEW VDouble(pool(), fmod(a_double, b_double)); | Value& value=*new VDouble(fmod(a_double, b_double)); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_INTDIV: | case OP_INTDIV: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| int a_int=a->as_int(); | int a_int=a.as_int(); |
| int b_int=b->as_int(); | int b_int=b.as_int(); |
| if(b_int == 0) { | if(b_int == 0) { |
| const String *problem_source=&b->as_string(); | //const String* problem_source=b.as_string(); |
| #ifndef NO_STRING_ORIGIN | throw Exception("number.zerodivision", |
| if(!problem_source->origin().file) | 0, //problem_source, |
| problem_source=&b->name(); | |
| #endif | |
| throw Exception(0, 0, | |
| problem_source, | |
| "Division by zero"); | "Division by zero"); |
| } | } |
| value=NEW VInt(pool(), a_int / b_int); | Value& value=*new VInt(a_int / b_int); |
| PUSH(value); | stack.push(value); |
| break; | |
| } | |
| case 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_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; | break; |
| } | } |
| case OP_BIN_AND: | case OP_BIN_AND: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), | Value& value=*new VInt( |
| a->as_int() & | a.as_int() & |
| b->as_int()); | b.as_int()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_BIN_OR: | case OP_BIN_OR: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), | Value& value=*new VInt( |
| a->as_int() | | a.as_int() | |
| b->as_int()); | b.as_int()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_BIN_XOR: | case OP_BIN_XOR: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VDouble(pool(), | Value& value=*new VInt( |
| a->as_int() ^ | a.as_int() ^ |
| b->as_int()); | b.as_int()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_LOG_AND: | case OP_LOG_AND: |
| { | { |
| b=POP(); a=POP(); | ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_bool() && b->as_bool()); | bool result; |
| PUSH(value); | if(a.as_bool()) { |
| execute(local_ops); | |
| Value& b=stack.pop().value(); | |
| result=b.as_bool(); | |
| } else | |
| result=false; | |
| Value& value=*new VBool(result); | |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_LOG_OR: | case OP_LOG_OR: |
| { | { |
| b=POP(); a=POP(); | ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_bool() || b->as_bool()); | bool result; |
| PUSH(value); | if(a.as_bool()) |
| result=true; | |
| else { | |
| execute(local_ops); | |
| Value& b=stack.pop().value(); | |
| result=b.as_bool(); | |
| } | |
| Value& value=*new VBool(result); | |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_LOG_XOR: | case OP_LOG_XOR: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_bool() ^ b->as_bool()); | Value& value=*new VBool(a.as_bool() ^ b.as_bool()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_NUM_LT: | case OP_NUM_LT: |
| { | { |
| b=POP(); a=POP(); | volatile double b_double=stack.pop().value().as_double(); |
| value=NEW VBool(pool(), a->as_double() < b->as_double()); | volatile double a_double=stack.pop().value().as_double(); |
| PUSH(value); | Value& value=*new VBool(a_double<b_double); |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_NUM_GT: | case OP_NUM_GT: |
| { | { |
| b=POP(); a=POP(); | volatile double b_double=stack.pop().value().as_double(); |
| value=NEW VBool(pool(), a->as_double() > b->as_double()); | volatile double a_double=stack.pop().value().as_double(); |
| PUSH(value); | Value& value=*new VBool(a_double>b_double); |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_NUM_LE: | case OP_NUM_LE: |
| { | { |
| b=POP(); a=POP(); | volatile double b_double=stack.pop().value().as_double(); |
| value=NEW VBool(pool(), a->as_double() <= b->as_double()); | volatile double a_double=stack.pop().value().as_double(); |
| PUSH(value); | Value& value=*new VBool(a_double<=b_double); |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_NUM_GE: | case OP_NUM_GE: |
| { | { |
| b=POP(); a=POP(); | volatile double b_double=stack.pop().value().as_double(); |
| value=NEW VBool(pool(), a->as_double() >= b->as_double()); | volatile double a_double=stack.pop().value().as_double(); |
| PUSH(value); | Value& value=*new VBool(a_double>=b_double); |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_NUM_EQ: | case OP_NUM_EQ: |
| { | { |
| b=POP(); a=POP(); | volatile double b_double=stack.pop().value().as_double(); |
| value=NEW VBool(pool(), a->as_double() == b->as_double()); | volatile double a_double=stack.pop().value().as_double(); |
| PUSH(value); | Value& value=*new VBool(a_double==b_double); |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_NUM_NE: | case OP_NUM_NE: |
| { | { |
| b=POP(); a=POP(); | volatile double b_double=stack.pop().value().as_double(); |
| value=NEW VBool(pool(), a->as_double() != b->as_double()); | volatile double a_double=stack.pop().value().as_double(); |
| PUSH(value); | Value& value=*new VBool(a_double!=b_double); |
| stack.push(value); | |
| break; | break; |
| } | } |
| case OP_STR_LT: | case OP_STR_LT: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_string() < b->as_string()); | Value& value=*new VBool(a.as_string() < b.as_string()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_STR_GT: | case OP_STR_GT: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_string() > b->as_string()); | Value& value=*new VBool(a.as_string() > b.as_string()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_STR_LE: | case OP_STR_LE: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_string() <= b->as_string()); | Value& value=*new VBool(a.as_string() <= b.as_string()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_STR_GE: | case OP_STR_GE: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_string() >= b->as_string()); | Value& value=*new VBool(a.as_string() >= b.as_string()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_STR_EQ: | case OP_STR_EQ: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_string() == b->as_string()); | Value& value=*new VBool(a.as_string() == b.as_string()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_STR_NE: | case OP_STR_NE: |
| { | { |
| b=POP(); a=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| value=NEW VBool(pool(), a->as_string() != b->as_string()); | Value& value=*new VBool(a.as_string() != b.as_string()); |
| PUSH(value); | stack.push(value); |
| break; | break; |
| } | } |
| case OP_IS: | case OP_IS: |
| { | { |
| //_asm int 3; | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| b=POP(); a=POP(); | Value& value=*new VBool(a.is(b.as_string().cstr())); |
| value=NEW VBool(pool(), b->as_string() == a->type()); | stack.push(value); |
| PUSH(value); | |
| break; | break; |
| } | } |
| default: | default: |
| throw Exception(0,0, | throw Exception(0, |
| 0, | 0, |
| "invalid opcode %d", op.code); | "invalid opcode %d", opcode); |
| } | } |
| } | } |
| } catch(const Exception&) { | |
| // record it to stack trace | |
| if(debug_name) | |
| exception_trace.push(Trace(debug_name, debug_origin)); | |
| rethrow; | |
| } | |
| } | } |
| Value *Request::get_element() { | /** |
| const String& name=POP_NAME(); | @todo cache|prepare junctions |
| Value *ncontext=POP(); | @bug ^superbase:method would dynamically call ^base:method if there is any |
| Value *value=ncontext->get_element(name); | */ |
| Value& Request::get_element(Value& ncontext, const String& name, bool can_call_operator) { | |
| Value* value=0; | |
| if(can_call_operator) { | |
| if(Method* method=main_class.get_method(name)) // looking operator of that name FIRST | |
| value=new VJunction(main_class, method); | |
| } | |
| 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(Value* 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) | if(!value) |
| if(Method* method=OP.get_method(name)) { // maybe operator? | value=ncontext.get_element(name, ncontext, false); |
| // as if that method were in self and we have normal dynamic method here | |
| Junction& junction=*NEW Junction(pool(), | if(value && wcontext->get_constructing()) |
| *root/*self*/, self->get_class(), method, 0,0,0,0); | if(Junction* junction=value->get_junction()) { |
| value=NEW VJunction(junction); | if(junction->self.get_class()!=&ncontext) |
| throw Exception("parser.runtime", | |
| &name, | |
| "constructor must be declared in class '%s'", | |
| ncontext.get_class()->name_cstr()); | |
| } | } |
| value_ready: | |
| if(value) | if(value) |
| value=&process(*value, &name); // process possible code-junction | value=&process_to_value(*value); // process possible code-junction |
| else { | else |
| value=NEW VVoid(pool()); | value=new VVoid; |
| value->set_name(name); | |
| } | |
| return value; | return *value; |
| } | |
| 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(ncontext, name, &value, false)) | |
| if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT) { | |
| const Junction& junction=vjunction->junction(); | |
| // process it | |
| ArrayString* params_names=junction.method->params_names; | |
| int param_count=params_names? params_names->count(): 0; | |
| if(param_count!=1) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "setter method must have ONE parameter (has %d parameters)", param_count); | |
| VMethodFrame frame(junction, method_frame/*caller*/); | |
| frame.store_param(value); | |
| frame.set_self(frame.junction.self); | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value* saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| 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(); | |
| method_frame=saved_method_frame; | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| } | |
| } | } |
| /** @param intercept_string | /** @param intercept_string |
| Line 779 Value *Request::get_element() { | Line 919 Value *Request::get_element() { |
| they want any result[string|object] | they want any result[string|object] |
| nothing goes to wcontext. | nothing goes to wcontext. |
| used in @c (expression) params evaluation | used in @c (expression) params evaluation |
| using the fact it's either string_ or value_ result requested to speed up checkes | |
| */ | */ |
| Value& Request::process(Value& value, const String *name, bool intercept_string) { | StringOrValue Request::process(Value& input_value, bool intercept_string) { |
| Value *result; | Junction* junction=input_value.get_junction(); |
| Junction *junction=value.get_junction(); | if(junction) { |
| if(junction && junction->code) { // is it a code-junction? | if(junction->is_getter) { // is it a getter-junction? |
| // process it | // process it |
| VMethodFrame frame(*junction, method_frame/*caller*/); | |
| if(junction->method->params_names) | |
| throw Exception("parser.runtime", | |
| 0, | |
| "getter method must have no parameters"); | |
| frame.set_self(frame.junction.self); | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value* saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| rcontext=wcontext=&frame; | |
| method_frame=&frame; | |
| recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it | |
| StringOrValue result=wcontext->result(); | |
| method_frame=saved_method_frame; | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| return result; | |
| } | |
| if(junction->code) { // is it a code-junction? | |
| // process it | |
| StringOrValue result; | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), "ja->\n"); | debug_printf(sapi_info, "ja->\n"); |
| #endif | #endif |
| PUSH(self); | |
| PUSH(root); | if(!junction->method_frame) |
| PUSH(rcontext); | throw Exception("parser.runtime", |
| PUSH(wcontext); | 0, |
| "junction used outside of context"); | |
| WContext *frame; | |
| // for expression method params | VMethodFrame *saved_method_frame=method_frame; |
| // wcontext is set 0 | Value* saved_rcontext=rcontext; |
| // using the fact in decision "which wwrapper to use" | WContext *saved_wcontext=wcontext; |
| bool using_code_frame=intercept_string && junction->wcontext; | |
| if(using_code_frame) { | method_frame=junction->method_frame; |
| // almost plain wwrapper about junction wcontext, | rcontext=junction->rcontext; |
| // BUT intercepts string writes | |
| frame=NEW VCodeFrame(pool(), *junction->wcontext); | // for expression method params |
| } else { | // wcontext is set 0 |
| // plain wwrapper | // using the fact in decision "which wwrapper to use" |
| frame=NEW WWrapper(pool(), 0/*empty*/); | bool using_code_frame=intercept_string && junction->wcontext; |
| } | if(using_code_frame) { |
| // almost plain wwrapper about junction wcontext, | |
| //frame->set_name(value.name()); | // BUT intercepts string writes |
| wcontext=frame; | VCodeFrame local(*junction->wcontext, junction->wcontext); |
| self=&junction->self; | wcontext=&local; |
| root=junction->root; | |
| rcontext=junction->rcontext; | // execute it |
| execute(*junction->code); | recoursion_checked_execute(*junction->code); |
| if(using_code_frame) { | |
| // CodeFrame soul: | // CodeFrame soul: |
| // string writes were intercepted | // string writes were intercepted |
| // returning them as the result of getting code-junction | // returning them as the result of getting code-junction |
| result=NEW VString(*frame->get_string()); | result.set_string(*wcontext->get_string()); |
| } else | } else { |
| result=frame->result(); | // plain wwrapper |
| WWrapper local(0/*empty*/, wcontext); | |
| wcontext=static_cast<WContext *>(POP()); | wcontext=&local; |
| rcontext=POP(); | |
| root=POP(); | // execute it |
| self=static_cast<VAliased *>(POP()); | recoursion_checked_execute(*junction->code); |
| result=wcontext->result(); | |
| } | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| #ifdef DEBUG_EXECUTE | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), "<-ja returned"); | debug_printf(sapi_info, "<-ja returned"); |
| #endif | #endif |
| } else | return result; |
| result=&value; | } |
| if(name) | // it is then method-junction, do not explode it |
| result->set_name(*name); | // just return it as we do for usual objects |
| return *result; | } |
| return input_value; | |
| } | } |
| const String *Request::execute_method(Value& aself, const Method& method, | StringOrValue Request::execute_method(VMethodFrame& amethod_frame, const Method& method) { |
| bool return_cstr) { | VMethodFrame *saved_method_frame=method_frame; |
| PUSH(self); | Value* saved_rcontext=rcontext; |
| PUSH(root); | WContext *saved_wcontext=wcontext; |
| PUSH(rcontext); | |
| PUSH(wcontext); | |
| // initialize contexts | // initialize contexts |
| root=rcontext=self=&aself; | rcontext=wcontext=method_frame=&amethod_frame; |
| wcontext=NEW WWrapper(pool(), &aself); | |
| // execute! | // execute! |
| execute(*method.parser_code); | execute(*method.parser_code); |
| // result | // result |
| const String *result; | StringOrValue result=wcontext->result(); |
| if(return_cstr) | |
| result=&wcontext->as_string(); | |
| else | |
| result=0; // ignore result | |
| wcontext=static_cast<WContext *>(POP()); | wcontext=saved_wcontext; |
| rcontext=POP(); | rcontext=saved_rcontext; |
| root=POP(); | method_frame=saved_method_frame; |
| self=static_cast<VAliased *>(POP()); | |
| // return | // return |
| return result; | return result; |
| } | } |
| const String *Request::execute_virtual_method(Value& aself, | const String* Request::execute_method(Value& aself, |
| const String& method_name, | const Method& method, VString* optional_param, |
| bool return_cstr) { | bool do_return_string) { |
| if(Value *value=aself.get_element(method_name)) | VMethodFrame *saved_method_frame=method_frame; |
| if(Junction *junction=value->get_junction()) | Value* saved_rcontext=rcontext; |
| if(const Method *method=junction->method) | WContext *saved_wcontext=wcontext; |
| return execute_method(aself, *method, return_cstr); | |
| Junction local_junction(aself, &method); | |
| return 0; | VMethodFrame local_frame(local_junction, method_frame/*caller*/); |
| 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(local_frame); | |
| // execute! | |
| execute(*method.parser_code); | |
| // result | |
| const String* result=0; | |
| if(do_return_string) | |
| result=&wcontext->result().as_string(); | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| return result; | |
| } | } |
| const String *Request::execute_nonvirtual_method(VStateless_class& aclass, | Request::Execute_nonvirtual_method_result |
| const String& method_name, | Request::execute_nonvirtual_method(VStateless_class& aclass, |
| bool return_cstr) { | const String& method_name, VString* optional_param, |
| if(const Method *method=aclass.get_method(method_name)) | bool do_return_string) { |
| return execute_method(aclass, *method, return_cstr); | 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, aself, false)) | |
| if(Junction* junction=value->get_junction()) | |
| if(const Method *method=junction->method) | |
| return execute_method(aself, *method, 0/*no params*/, true); | |
| return 0; | return 0; |
| } | } |