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| version 1.52, 2001/03/06 14:32:19 | version 1.306, 2004/07/30 10:01:14 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: executor part of request class. |
| Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| */ | */ |
| static const char * const 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_vstring.h" |
| #include "pa_vhash.h" | #include "pa_vhash.h" |
| #include "pa_vunknown.h" | #include "pa_vvoid.h" |
| #include "pa_vcframe.h" | #include "pa_vcode_frame.h" |
| #include "pa_vmframe.h" | #include "pa_vmethod_frame.h" |
| #include "pa_vobject.h" | #include "pa_vobject.h" |
| #include "pa_vdouble.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 PUSH(value) stack.push(value) | |
| #define POP() static_cast<Value *>(stack.pop()) | |
| #define POP_NAME() static_cast<Value *>(stack.pop())->as_string() | |
| #ifdef DEBUG_EXECUTE | |
| char *opcode_name[]={ | char *opcode_name[]={ |
| // literals | // literals |
| "VALUE", "CODE", "CLASS", | "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", |
| "NESTED_CODE", | |
| // actions | // actions |
| "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE", | "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", |
| "CONSTRUCT", | "GET_CLASS", |
| "WRITE", | "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", |
| "GET_ELEMENT", "GET_ELEMENT__WRITE", | "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", |
| "CREATE_EWPOOL", "REDUCE_EWPOOL", | "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE", |
| "CREATE_RWPOOL", "REDUCE_RWPOOL", | "OBJECT_POOL", "STRING_POOL", |
| "CREATE_SWPOOL", "REDUCE_SWPOOL", | |
| "GET_METHOD_FRAME", | |
| "STORE_PARAM", | "STORE_PARAM", |
| "CALL", | "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION", |
| "CALL", "CALL__WRITE", | |
| // expression ops: unary | // expression ops: unary |
| "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", | "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS", |
| // expression ops: binary | // expression ops: binary |
| "SUB", "ADD", "MUL", "DIV", "MOD", | "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV", |
| "BIN_AND", "BIN_OR", | "BIN_SL", "BIN_SR", |
| "LOG_AND", "LOG_OR", | "BIN_AND", "BIN_OR", "BIN_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", |
| "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE", | "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE", |
| "XOR" | "IS" |
| }; | }; |
| void dump(int level, const Array& ops) { | void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) { |
| if(0){ | char buf[MAX_STRING]; |
| int size=ops.size(); | vsnprintf(buf, MAX_STRING, fmt, args); |
| //fprintf(stderr, "size=%d\n", size); | SAPI::log(sapi_info, "%s", buf); |
| for(int i=0; i<size; i++) { | } |
| Operation op; | |
| op.cast=ops.quick_get(i); | |
| fprintf(stderr, "%8X\n", op.cast); | |
| } | |
| } | |
| int size=ops.size(); | void debug_printf(SAPI_Info& sapi_info, const char* fmt, ...) { |
| //fprintf(stderr, "size=%d\n", size); | va_list args; |
| for(int i=0; i<size; i++) { | va_start(args, fmt); |
| Operation op; | va_debug_printf(sapi_info, fmt, args); |
| op.cast=ops.quick_get(i); | va_end(args); |
| fprintf(stderr, "%*s%s", level*4, "", opcode_name[op.code]); | } |
| if(op.code==OP_VALUE) { | void debug_dump(SAPI_Info& sapi_info, int level, ArrayOperation& ops) { |
| Value *value=static_cast<Value *>(ops.quick_get(++i)); | Array_iterator<Operation> i(ops); |
| fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); | while(i.has_next()) { |
| } | OPCODE opcode=i.next().code; |
| if(op.code==OP_CLASS) { | |
| VClass *vclass=static_cast<VClass *>(ops.quick_get(++i)); | if(opcode==OP_VALUE || opcode==OP_STRING__WRITE) { |
| fprintf(stderr, " \"%s\"", vclass->name().cstr()); | Operation::Origin origin=i.next().origin; |
| Value& value=*i.next().value; | |
| debug_printf(sapi_info, | |
| "%*s%s" | |
| " \"%s\" %s", | |
| level*4, "", opcode_name[opcode], | |
| value.get_string()->cstr(), value.type()); | |
| continue; | |
| } | } |
| fprintf(stderr, "\n"); | debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[opcode]); |
| if(op.code==OP_CODE) { | switch(opcode) { |
| 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) | |
| debug_dump(sapi_info, level+1, *local_ops); | |
| } | } |
| } | } |
| } | } |
| #endif | |
| void Request::execute(const Array& ops) { | // Request |
| if(1) { | |
| fputs("source----------------------------\n", stderr); | void Request::execute(ArrayOperation& ops) { |
| dump(0, ops); | register Stack<StackItem>& stack=this->stack; // helps a lot on MSVC: 'esi' |
| fputs("execution-------------------------\n", stderr); | |
| } | |
| int size=ops.size(); | const String* debug_name=0; Operation::Origin debug_origin={0, 0, 0}; |
| //fprintf(stderr, "size=%d\n", size); | try{ |
| for(int i=0; i<size; i++) { | #ifdef DEBUG_EXECUTE |
| Operation op; | debug_printf(sapi_info, "source----------------------------\n"); |
| op.cast=ops.quick_get(i); | debug_dump(sapi_info, 0, ops); |
| fprintf(stderr, "%d:%s", stack.top(), opcode_name[op.code]); | debug_printf(sapi_info, "execution-------------------------\n"); |
| #endif | |
| for(Array_iterator<Operation> i(ops); i.has_next(); ) { | |
| if(get_interrupted()) { | |
| set_interrupted(false); | |
| throw Exception("parser.interrupted", | |
| 0, | |
| "execution stopped"); | |
| } | |
| OPCODE opcode=i.next().code; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[opcode]); | |
| #endif | |
| switch(op.code) { | switch(opcode) { |
| // param in next instruction | // param in next instruction |
| case OP_VALUE: | case OP_VALUE: |
| { | { |
| Value *value=static_cast<Value *>(ops.quick_get(++i)); | debug_origin=i.next().origin; |
| fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); | Value& value=*i.next().value; |
| PUSH(value); | #ifdef DEBUG_EXECUTE |
| break; | debug_printf(sapi_info, " \"%s\" %s", value.get_string()->cstr(), value.type()); |
| } | #endif |
| case OP_CODE: | stack.push(value); |
| { | break; |
| const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); | } |
| fprintf(stderr, " (%d)\n", local_ops->size()); | case OP_GET_CLASS: |
| dump(1, *local_ops); | { |
| Junction& j=*NEW Junction(pool(), | // maybe they do ^class:method[] call, remember the fact |
| *self, 0, 0, | wcontext->set_somebody_entered_some_class(); |
| root,rcontext,wcontext,local_ops); | |
| const String& name=stack.pop().string(); | |
| Value *value=NEW VJunction(j); | Value* value=classes().get(name); |
| PUSH(value); | if(!value) |
| break; | throw Exception("parser.runtime", |
| } | &name, |
| case OP_CLASS: | "class is undefined"); |
| { | |
| VClass *vclass=static_cast<VClass *>(ops.quick_get(++i)); | stack.push(*value); |
| fprintf(stderr, " \"%s\"", vclass->name().cstr()); | |
| PUSH(vclass); | |
| break; | break; |
| } | } |
| // OP_WITH | // OP_WITH |
| case OP_WITH_SELF: | case OP_WITH_ROOT: |
| { | { |
| PUSH(self); | stack.push(*method_frame); |
| break; | break; |
| } | } |
| case OP_WITH_ROOT: | case OP_WITH_SELF: |
| { | { |
| PUSH(root); | 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: | case OP_CONSTRUCT_VALUE: |
| { | |
| Value& value=stack.pop().value(); | |
| const String& name=stack.pop().string(); debug_name=&name; | |
| Value& ncontext=stack.pop().value(); | |
| ncontext.put_element(name, &value, false); | |
| break; | |
| } | |
| case OP_CONSTRUCT_EXPR: | |
| { | { |
| Value *value=POP(); | // see OP_PREPARE_TO_EXPRESSION |
| String& name=POP_NAME(); | wcontext->set_in_expression(false); |
| Value *ncontext=POP(); | |
| value->set_name(name); | Value& value=stack.pop().value(); |
| ncontext->put_element(name, value); | const String& name=stack.pop().string(); debug_name=&name; |
| Value& ncontext=stack.pop().value(); | |
| ncontext.put_element(name, &value.as_expr_result(), false); | |
| break; | break; |
| } | } |
| case OP_WRITE: | case OP_CURLY_CODE__CONSTRUCT: |
| { | { |
| Value *value=POP(); | ArrayOperation& local_ops=*i.next().ops; |
| wcontext->write(value); | #ifdef DEBUG_EXECUTE |
| debug_printf(sapi_info, " (%d)\n", local_ops.count()); | |
| debug_dump(sapi_info, 1, local_ops); | |
| #endif | |
| Value& value=*new VJunction(new Junction( | |
| get_self(), 0, | |
| method_frame, | |
| rcontext, | |
| wcontext, | |
| &local_ops)); | |
| const String& name=stack.pop().string(); debug_name=&name; | |
| Value& ncontext=stack.pop().value(); | |
| ncontext.put_element(name, &value, false); | |
| break; | break; |
| } | } |
| case OP_NESTED_CODE: | |
| case OP_GET_ELEMENT: | |
| { | { |
| Value *value=get_element(); | ArrayOperation& local_ops=*i.next().ops; |
| PUSH(value); | #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_GET_ELEMENT__WRITE: | |
| { | { |
| Value *value=get_element(); | Value& value=stack.pop().value(); |
| wcontext->write(value); | write_assign_lang(value); |
| break; | break; |
| } | } |
| case OP_WRITE_EXPR_RESULT: | |
| case OP_CREATE_EWPOOL: | |
| { | { |
| PUSH(wcontext); | Value& value=stack.pop().value(); |
| wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */); | 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_REDUCE_EWPOOL: | case OP_STRING__WRITE: |
| { | { |
| Value *value=wcontext->result(); | i.next(); // ignore origin |
| wcontext=static_cast<WContext *>(POP()); | Value* value=i.next().value; |
| PUSH(value); | #ifdef DEBUG_EXECUTE |
| debug_printf(sapi_info, " \"%s\"", value->get_string()->cstr()); | |
| #endif | |
| write_no_lang(*value->get_string()); | |
| break; | break; |
| } | } |
| case OP_CREATE_RWPOOL: | 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: | |
| { | { |
| Value *ncontext=POP(); | const String& name=stack.pop().string(); debug_name=&name; |
| PUSH(rcontext); | Value& ncontext=stack.pop().value(); |
| rcontext=ncontext; | Value& value=get_element(ncontext, name, false); |
| PUSH(wcontext); | stack.push(value); |
| wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */); | |
| break; | break; |
| } | } |
| case OP_REDUCE_RWPOOL: | |
| case OP_GET_ELEMENT__WRITE: | |
| { | { |
| String *string=wcontext->get_string(); | const String& name=stack.pop().string(); debug_name=&name; |
| Value *value=string?NEW VString(*string):NEW VString(pool()); | Value& ncontext=stack.pop().value(); |
| wcontext=static_cast<WContext *>(POP()); | Value& value=get_element(ncontext, name, false); |
| rcontext=POP(); | write_assign_lang(value); |
| PUSH(value); | |
| break; | break; |
| } | } |
| case OP_CREATE_SWPOOL: | |
| case OP_OBJECT_POOL: | |
| { | { |
| PUSH(wcontext); | ArrayOperation& local_ops=*i.next().ops; |
| wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */); | |
| WContext *saved_wcontext=wcontext; | |
| 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_REDUCE_SWPOOL: | |
| case OP_STRING_POOL: | |
| { | { |
| 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 |
| String *string=wcontext->get_string(); | if(const String* string=wcontext->get_string()) |
| Value *value=string?NEW VString(*string):NEW VString(pool()); | value=new VString(*string); |
| wcontext=static_cast<WContext *>(POP()); | else |
| PUSH(value); | value=new VVoid; |
| stack.push(*value); | |
| wcontext=saved_wcontext; | |
| break; | break; |
| } | } |
| // CALL | // CALL |
| case OP_GET_METHOD_FRAME: | case OP_STORE_PARAM: |
| { | { |
| Value *value=POP(); | Value& value=stack.pop().value(); |
| // [self/class?;params;local;code/native_code](name) | VMethodFrame& frame=stack.top_value().method_frame(); |
| Junction *junction=value->get_junction(); | // this op is executed from CALL local_ops only, so may skip the check "method_frame_to_fill==0" |
| if(!junction) | frame.store_param(value); |
| THROW(0,0, | break; |
| &value->name(), | } |
| "type is '%s', can not call it (must be method or junction)", | case OP_CURLY_CODE__STORE_PARAM: |
| value->type()); | case OP_EXPR_CODE__STORE_PARAM: |
| //unless(method) method=operators.get_method[...;code/native_code](name) | { |
| VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); | // code |
| PUSH(frame); | ArrayOperation& local_ops=*i.next().ops; |
| 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(new Junction( | |
| 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; |
| } | } |
| case OP_STORE_PARAM: | |
| case OP_PREPARE_TO_CONSTRUCT_OBJECT: | |
| { | { |
| Value *value=POP(); | wcontext->set_constructing(true); |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack[0]); | break; |
| frame->store_param(value); | } |
| case OP_PREPARE_TO_EXPRESSION: | |
| { | |
| wcontext->set_in_expression(true); | |
| break; | break; |
| } | } |
| case OP_CALL: | case OP_CALL: |
| case OP_CALL__WRITE: | |
| { | { |
| fprintf(stderr, "->\n"); | //is_debug_junction=true; |
| VMethodFrame *frame=static_cast<VMethodFrame *>(POP()); | ArrayOperation* local_ops=i.next().ops; |
| frame->fill_unspecified_params(); | #ifdef DEBUG_EXECUTE |
| PUSH(self); | debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0); |
| PUSH(root); | if(local_ops) |
| PUSH(rcontext); | debug_dump(sapi_info, 1, *local_ops); |
| PUSH(wcontext); | |
| debug_printf(sapi_info, "->\n"); | |
| VClass *called_class=frame->junction.self.get_class(); | #endif |
| // constructing? | Value& value=stack.pop().value(); |
| if(wcontext->constructing()) { // yes | |
| // constructor call: $some(^class:method(..)) | Junction* junction=value.get_junction(); |
| frame->write(self=NEW VObject(pool(), *called_class)); | if(!junction) { |
| } else { // no | if(value.is("void")) |
| // context is object or class & is it my class or my parent's class? | throw Exception("parser.runtime", |
| VClass *read_class=rcontext->get_class(); | 0, |
| if(read_class && read_class->is_or_derived_from(*called_class)) // yes | "undefined method"); |
| self=rcontext; // class dynamic call | else |
| else // no | throw Exception("parser.runtime", |
| self=&frame->junction.self; // static or simple dynamic call | 0, |
| "is '%s', not a method or junction, can not call it", | |
| value.type()); | |
| } | } |
| frame->set_self(*self); | /* no check needed, code compiled the way that that's impossible |
| root=rcontext=wcontext=frame; | // 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(); | |
| Value* 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(Value* value=called_class.create_new_value(fpool)) { | |
| // some stateless_class creatable derivates | |
| new_self=value; | |
| } 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, | |
| String::L_CLEAN // not used, always an object, not string | |
| ); | |
| } else | |
| throw Exception("parser.runtime", | |
| 0, //&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; | |
| { | { |
| // take object or class from any wrappers | const Method& method=*frame.junction.method; |
| VAliased *aliased=self->get_aliased(); | Method::Call_type call_type= |
| // substitute class alias to the class they are called AS | &called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC; |
| Temp_alias temp_alias(*aliased, *frame->junction.vclass); | if( |
| execute(frame->junction.method->code); | method.call_type==Method::CT_ANY || |
| method.call_type==call_type) { // allowed call type? | |
| 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.numbered_params()); // execute it | |
| } else // parser code, execute it | |
| recoursion_checked_execute(/*frame.name(), */*method.parser_code); | |
| } else | |
| throw Exception("parser.runtime", | |
| 0, //&frame.name(), | |
| "is not allowed to be called %s", | |
| call_type==Method::CT_STATIC?"statically":"dynamically"); | |
| } | } |
| Value *value=wcontext->result(); | StringOrValue result=wcontext->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()); | |
| wcontext->write(value); | if(opcode==OP_CALL__WRITE) { |
| fprintf(stderr, "<-returned"); | write_assign_lang(result); |
| } else { // OP_CALL | |
| stack.push(result.as_value()); | |
| } | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(sapi_info, "<-returned"); | |
| #endif | |
| //is_debug_junction=false; | |
| break; | break; |
| } | } |
| // EXPRESSION | // expression ops: unary |
| case OP_NEG: | |
| { | |
| Value& a=stack.pop().value(); | |
| Value& value=*new VDouble(-a.as_double()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_INV: | |
| { | |
| Value& a=stack.pop().value(); | |
| Value& value=*new VDouble(~a.as_int()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NOT: | |
| { | |
| Value& a=stack.pop().value(); | |
| Value& value=*new VBool(!a.as_bool()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_DEF: | |
| { | |
| Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.is_defined()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_IN: | |
| { | |
| Value& a=stack.pop().value(); | |
| const String& path=a.as_string(); | |
| Value& value=*new VBool(request_info.uri && *request_info.uri && path.this_starts(request_info.uri)); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_FEXISTS: | |
| { | |
| Value& a=stack.pop().value(); | |
| Value& value=*new VBool(file_readable(absolute(a.as_string()))); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_DEXISTS: | |
| { | |
| Value& a=stack.pop().value(); | |
| Value& value=*new VBool(dir_readable(absolute(a.as_string()))); | |
| stack.push(value); | |
| break; | |
| } | |
| // expression ops: binary | |
| case 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_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_MUL: | case OP_MUL: |
| { | { |
| Value *b=POP(); | Value& b=stack.pop().value(); Value& a=stack.pop().value(); |
| Value *a=POP(); | Value& value=*new VDouble(a.as_double() * b.as_double()); |
| Value *value=NEW VDouble(pool(), | stack.push(value); |
| a->get_double() * | break; |
| b->get_double()); | } |
| PUSH(value); | case OP_DIV: |
| { | |
| 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, | |
| "Division by zero"); | |
| } | |
| Value& value=*new VDouble(a_double / b_double); | |
| stack.push(value); | |
| break; | |
| } | |
| case 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_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_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; | |
| } | |
| case 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_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_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_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=*new VBool(result); | |
| stack.push(value); | |
| break; | |
| } | |
| case 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=*new VBool(result); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_LOG_XOR: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.as_bool() ^ b.as_bool()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_LT: | |
| { | |
| volatile double b_double=stack.pop().value().as_double(); | |
| volatile double a_double=stack.pop().value().as_double(); | |
| Value& value=*new VBool(a_double<b_double); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_GT: | |
| { | |
| volatile double b_double=stack.pop().value().as_double(); | |
| volatile double a_double=stack.pop().value().as_double(); | |
| Value& value=*new VBool(a_double>b_double); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_LE: | |
| { | |
| volatile double b_double=stack.pop().value().as_double(); | |
| volatile double a_double=stack.pop().value().as_double(); | |
| Value& value=*new VBool(a_double<=b_double); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_GE: | |
| { | |
| volatile double b_double=stack.pop().value().as_double(); | |
| volatile double a_double=stack.pop().value().as_double(); | |
| Value& value=*new VBool(a_double>=b_double); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_EQ: | |
| { | |
| volatile double b_double=stack.pop().value().as_double(); | |
| volatile double a_double=stack.pop().value().as_double(); | |
| Value& value=*new VBool(a_double==b_double); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_NUM_NE: | |
| { | |
| volatile double b_double=stack.pop().value().as_double(); | |
| volatile double a_double=stack.pop().value().as_double(); | |
| Value& value=*new VBool(a_double!=b_double); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_LT: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.as_string() < b.as_string()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_GT: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.as_string() > b.as_string()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_LE: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.as_string() <= b.as_string()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_GE: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.as_string() >= b.as_string()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_EQ: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.as_string() == b.as_string()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_STR_NE: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.as_string() != b.as_string()); | |
| stack.push(value); | |
| break; | |
| } | |
| case OP_IS: | |
| { | |
| Value& b=stack.pop().value(); Value& a=stack.pop().value(); | |
| Value& value=*new VBool(a.is(b.as_string().cstr())); | |
| stack.push(value); | |
| break; | break; |
| } | } |
| default: | default: |
| fprintf(stderr, "\tTODO"); | throw Exception(0, |
| break; | 0, |
| "invalid opcode %d", opcode); | |
| } | } |
| fprintf(stderr, "\n"); | } |
| } catch(const Exception&) { | |
| // record it to stack trace | |
| if(debug_name) | |
| exception_trace.push(Trace(debug_name, debug_origin)); | |
| rethrow; | |
| } | } |
| } | } |
| Value *Request::get_element() { | /** |
| 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) { | |
| if(value) { | Value* value=0; |
| Junction *junction=value->get_junction(); | if(can_call_operator) { |
| if(junction && junction->code) { // is it a code-junction? | if(Method* method=main_class.get_method(name)) // looking operator of that name FIRST |
| // autocalc it | value=new VJunction(new Junction( |
| fprintf(stderr, "ja->\n"); | main_class, method, 0,0,0, 0)); |
| PUSH(self); | } |
| PUSH(root); | if(!value) { |
| PUSH(rcontext); | if(!wcontext->get_constructing() // not constructing |
| PUSH(wcontext); | && 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) | |
| value=ncontext.get_element(name, ncontext, false); | |
| if(value && wcontext->get_constructing()) | |
| if(Junction* junction=value->get_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) | |
| value=&process_to_value(*value); // process possible code-junction | |
| else | |
| value=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(Value& input_value, bool intercept_string) { | |
| StringOrValue result; | |
| Junction* 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", | |
| 0, | |
| "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, | // almost plain wwrapper about junction wcontext, |
| // BUT intercepts string writes | // BUT intercepts string writes |
| VCodeFrame frame(pool(), *junction->wcontext); 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); |
| // 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 |
| value=NEW VString(*frame.get_string()); | result.set_string(*wcontext->get_string()); |
| } else { | |
| wcontext=static_cast<WContext *>(POP()); | // plain wwrapper |
| rcontext=POP(); | WWrapper local(0/*empty*/, wcontext); |
| root=POP(); | wcontext=&local; |
| self=static_cast<VAliased *>(POP()); | |
| fprintf(stderr, "<-ja returned"); | // execute it |
| recoursion_checked_execute(*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 { | } else { |
| value=NEW VUnknown(pool()); | result.set_value(input_value); |
| value->set_name(name); | |
| } | } |
| return value; | return result; |
| } | |
| StringOrValue 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 | |
| StringOrValue result=wcontext->result(); | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| // return | |
| return result; | |
| } | |
| const String* Request::execute_method(Value& aself, | |
| const Method& method, VString* 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, 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; | |
| } | |
| 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, 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; | |
| } | } |