--- parser3/src/main/execute.C 2001/03/13 14:28:51 1.103 +++ parser3/src/main/execute.C 2002/04/10 09:53:15 1.224 @@ -1,52 +1,62 @@ -/* - Parser - Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) - Author: Alexander Petrosyan (http://design.ru/paf) +/** @file + Parser: executor part of request class. - $Id: execute.C,v 1.103 2001/03/13 14:28:51 paf Exp $ + Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexandr Petrosian (http://paf.design.ru) + + $Id: execute.C,v 1.224 2002/04/10 09:53:15 paf Exp $ */ +#include "pa_opcode.h" #include "pa_array.h" -#include "code.h" #include "pa_request.h" #include "pa_vstring.h" #include "pa_vhash.h" -#include "pa_vunknown.h" -#include "pa_vcframe.h" -#include "pa_vmframe.h" +#include "pa_vvoid.h" +#include "pa_vcode_frame.h" +#include "pa_vmethod_frame.h" #include "pa_vobject.h" #include "pa_vdouble.h" #include "pa_vbool.h" #include "pa_vtable.h" +#include "pa_vfile.h" +#include "pa_vimage.h" +#include "pa_wwrapper.h" -#include +//#define DEBUG_EXECUTE +//#define DEBUG_STRING_APPENDS_VS_EXPANDS -#define PUSH(value) stack.push(value) -#define POP() static_cast(stack.pop()) -#define POP_NAME() static_cast(stack.pop())->as_string() + +#ifdef DEBUG_STRING_APPENDS_VS_EXPANDS +ulong wcontext_result_size=0; +#endif + +const uint ANTI_ENDLESS_EXECUTE_RECOURSION=500; + +#ifdef DEBUG_EXECUTE char *opcode_name[]={ // literals - "VALUE", "CODE__STORE_PARAM", + "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", + "NESTED_CODE", // actions - "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE", + "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", "GET_CLASS", - "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE", - "WRITE", "STRING__WRITE", - "GET_ELEMENT", "GET_ELEMENT__WRITE", + "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", + "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", + "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE", "CREATE_EWPOOL", "REDUCE_EWPOOL", - "CREATE_RWPOOL", "REDUCE_RWPOOL", "CREATE_SWPOOL", "REDUCE_SWPOOL", "GET_METHOD_FRAME", "STORE_PARAM", - "CALL", + "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION", "CALL", // expression ops: unary - "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", + "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS", // expression ops: binary - "SUB", "ADD", "MUL", "DIV", "MOD", + "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV", "BIN_AND", "BIN_OR", "BIN_XOR", "LOG_AND", "LOG_OR", "LOG_XOR", "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE", @@ -54,74 +64,108 @@ char *opcode_name[]={ "IS" }; -void dump(int level, const Array& ops) { - if(0){ - int size=ops.size(); - //fprintf(stderr, "size=%d\n", size); - for(int i=0; i(ops.quick_get(++i)); - fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); + Value *value=static_cast(i.next()); + debug_printf(pool, + "%*s%s" + " \"%s\" %s", + level*4, "", opcode_name[op.code], + value->get_string()->cstr(), value->type()); + continue; } - fprintf(stderr, "\n"); + debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]); - if(op.code==OP_CODE__STORE_PARAM) { - const Array *local_ops=reinterpret_cast(ops.quick_get(++i)); - dump(level+1, *local_ops); + switch(op.code) { + case OP_CURLY_CODE__STORE_PARAM: + case OP_EXPR_CODE__STORE_PARAM: + case OP_CURLY_CODE__CONSTRUCT: + case OP_NESTED_CODE: + const Array *local_ops=reinterpret_cast(i.next()); + debug_dump(pool, level+1, *local_ops); } } - fflush(stderr); } +#endif + +#define PUSH(value) stack.push(value) +#define POP() static_cast(stack.pop()) +#define POP_NAME() static_cast(stack.pop())->as_string() +#define POP_CODE() static_cast(stack.pop()) void Request::execute(const Array& ops) { - if(1) { - fputs("source----------------------------\n", stderr); - dump(0, ops); - fputs("execution-------------------------\n", stderr); - } +// _asm int 3; +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "source----------------------------\n"); + debug_dump(pool(), 0, ops); + debug_printf(pool(), "execution-------------------------\n"); +#endif - int size=ops.size(); - //fprintf(stderr, "size=%d\n", size); - for(int i=0; i(ops.quick_get(++i)); - fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); + value=static_cast(i.next()); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type()); +#endif PUSH(value); break; } - case OP_CODE__STORE_PARAM: + case OP_CURLY_CODE__STORE_PARAM: + case OP_EXPR_CODE__STORE_PARAM: { VMethodFrame *frame=static_cast(stack.top_value()); // code - const Array *local_ops=reinterpret_cast(ops.quick_get(++i)); - fprintf(stderr, " (%d)\n", local_ops->size()); - dump(1, *local_ops); - + const Array *local_ops=reinterpret_cast(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, frame, frame, local_ops); + root, + rcontext, + op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext, + local_ops); - Value *value=NEW VJunction(j); + value=NEW VJunction(j); // store param frame->store_param(frame->name(), value); @@ -129,29 +173,29 @@ void Request::execute(const Array& ops) } case OP_GET_CLASS: { - // maybe the do ^class:method[] call, remember the fact + // maybe they do ^class:method[] call, remember the fact wcontext->set_somebody_entered_some_class(); const String& name=POP_NAME(); - VClass *vclass=static_cast(classes().get(name)); - if(!vclass) - THROW(0,0, + value=static_cast(classes().get(name)); + if(!value) + throw Exception("parser.runtime", &name, - ": undefined class"); + "class is undefined"); - PUSH(vclass); + PUSH(value); break; } // OP_WITH - case OP_WITH_SELF: + case OP_WITH_ROOT: { - PUSH(self); + PUSH(root); break; } - case OP_WITH_ROOT: + case OP_WITH_SELF: { - PUSH(root); + PUSH(self); break; } case OP_WITH_READ: @@ -168,7 +212,7 @@ void Request::execute(const Array& ops) // OTHER ACTIONS BUT WITHs case OP_CONSTRUCT_VALUE: { - Value *value=POP(); + value=POP(); const String& name=POP_NAME(); Value *ncontext=POP(); ncontext->put_element(name, value); @@ -177,37 +221,100 @@ void Request::execute(const Array& ops) } case OP_CONSTRUCT_EXPR: { - Value *value=POP(); + // see OP_PREPARE_TO_EXPRESSION + wcontext->set_in_expression(false); + + value=POP(); const String& name=POP_NAME(); Value *ncontext=POP(); - ncontext->put_element(name, value->get_expr_result()); + ncontext->put_element(name, value->as_expr_result()); value->set_name(name); break; } - case OP_WRITE: + case OP_CURLY_CODE__CONSTRUCT: { - Value *value=POP(); + const Array *local_ops=reinterpret_cast(i.next()); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), " (%d)\n", local_ops->size()); + debug_dump(pool(), 1, *local_ops); +#endif + Junction& j=*NEW Junction(pool(), + *self, 0, 0, + root, + rcontext, + wcontext, + local_ops); + + value=NEW VJunction(j); + const String& name=POP_NAME(); + Value *ncontext=POP(); + ncontext->put_element(name, value); + value->set_name(name); + break; + } + case OP_NESTED_CODE: + { + Array *local_ops=static_cast(i.next()); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), " (%d)\n", local_ops->size()); + debug_dump(pool(), 1, *local_ops); +#endif + PUSH(local_ops); + break; + } + case OP_WRITE_VALUE: + { + value=POP(); 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; + } + case OP_WRITE_EXPR_RESULT: + { + // see OP_PREPARE_TO_EXPRESSION + wcontext->set_in_expression(false); + + value=POP(); + write_expr_result(*value->as_expr_result()); break; } case OP_STRING__WRITE: { - VString *vstring=static_cast(ops.quick_get(++i)); - fprintf(stderr, " \"%s\"", vstring->value().cstr()); - write(vstring->value()); + VString *vstring=static_cast(i.next()); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), " \"%s\"", vstring->string().cstr()); +#endif + write_no_lang(vstring->string()); break; } + case OP_GET_ELEMENT_OR_OPERATOR: + { + // maybe they do ^object.method[] call, remember the fact + wcontext->set_somebody_entered_some_object(true); + + //_asm int 3; + value=get_element(true); + PUSH(value); + break; + } case OP_GET_ELEMENT: { - Value *value=get_element(); + // maybe they do ^object.method[] call, remember the fact + wcontext->set_somebody_entered_some_object(true); + + //_asm int 3; + value=get_element(false); PUSH(value); break; } case OP_GET_ELEMENT__WRITE: { - Value *value=get_element(); + value=get_element(false); write_assign_lang(*value); break; } @@ -216,43 +323,24 @@ void Request::execute(const Array& ops) case OP_CREATE_EWPOOL: { PUSH(wcontext); - wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */); + PUSH((void *)flang); + flang=String::UL_PASS_APPENDED; + wcontext=NEW WWrapper(pool(), 0 /*empty*/); break; } case OP_REDUCE_EWPOOL: { - Value *value=wcontext->result(); + value=&wcontext->result(); + flang=static_cast(reinterpret_cast(POP())); wcontext=static_cast(POP()); PUSH(value); break; } - case OP_CREATE_RWPOOL: - { - Value *ncontext=POP(); - PUSH(rcontext); - rcontext=ncontext; - PUSH(wcontext); - wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */); - break; - } - case OP_REDUCE_RWPOOL: - { - const String *string=wcontext->get_string(); - Value *value; - if(string) - value=NEW VString(*string); - else - value=NEW VUnknown(pool()); - wcontext=static_cast(POP()); - rcontext=POP(); - PUSH(value); - break; - } case OP_CREATE_SWPOOL: { PUSH(wcontext); - wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */); + wcontext=NEW WWrapper(pool(), 0 /*empty*/); break; } case OP_REDUCE_SWPOOL: @@ -264,7 +352,7 @@ void Request::execute(const Array& ops) if(string) value=NEW VString(*string); else - NEW VUnknown(pool()); + NEW VVoid(pool()); wcontext=static_cast(POP()); PUSH(value); break; @@ -273,32 +361,47 @@ void Request::execute(const Array& ops) // CALL case OP_GET_METHOD_FRAME: { - Value *value=POP(); - // info: this one's always method-junction, not a code-junction + value=POP(); + + // info: + // code compiled so that this one's always method-junction, + // not a code-junction Junction *junction=value->get_junction(); if(!junction) - THROW(0,0, + throw Exception("parser.runtime", &value->name(), - "(%s) uncallable, must be method or junction", + "(%s) not a method or junction, can not call it", value->type()); - VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); - //frame->set_name(junction->self.name()); - frame->set_name(value->name()); + VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction); PUSH(frame); break; } case OP_STORE_PARAM: { - Value *value=POP(); + value=POP(); VMethodFrame *frame=static_cast(stack.top_value()); frame->store_param(frame->name(), 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: { - fprintf(stderr, "->\n"); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "->\n"); +#endif VMethodFrame *frame=static_cast(POP()); frame->fill_unspecified_params(); PUSH(self); @@ -307,52 +410,109 @@ void Request::execute(const Array& ops) PUSH(wcontext); VStateless_class *called_class=frame->junction.self.get_class(); - // is context object or class & is it my class or my parent's class? - VStateless_class *read_class=rcontext->get_class(); - if(read_class && read_class->is_or_derived_from(*called_class)) // yes - self=rcontext; // class dynamic call - else // no, not me or relative of mine (total stranger) - if( - wcontext->constructing() && // constructing? - wcontext->somebody_entered_some_class()) { // ^class:method[..]? - // yes, this is a constructor call - if(called_class->name()==TABLE_CLASS_NAME) - self=NEW VTable(pool()); - else if(called_class->name()==ENV_CLASS_NAME) - self=NEW VEnv(pool()); - else - self=NEW VObject(pool(), *called_class); + 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(pool())) { + // some stateless_class creatable derivates + self=value; + } else + throw Exception("parser.runtime", + &frame->name(), + "is not a constructor, system class '%s' can be constructed only implicitly", + called_class->name().cstr()); + frame->write(*self, - String::Untaint_lang::NO // not used, always an object, not string + String::UL_CLEAN // not used, always an object, not string ); - } else - self=&frame->junction.self; // no, static or simple dynamic call + } else + throw Exception("parser.runtime", + &frame->name(), + "method is static and can not be used as constructor"); + } else { + // this is not constructor call + + // not ^name.method call, name:method call; and + // 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); - root=rcontext=wcontext=frame; + + // see OP_PREPARE_TO_EXPRESSION + frame->set_in_expression(wcontext->get_in_expression()); + + rcontext=wcontext=frame; { // take object or class from any wrappers // 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; - if(method.native_code) { // native code? - method.check_actual_numbered_params( - frame->name(), frame->numbered_params()); - (*method.native_code)(*this, - frame->name(), frame->numbered_params()); // execute it - } else // parser code - execute(*method.parser_code); // execute it + Method::Call_type call_type= + called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC; + if( + method.call_type==Method::CT_ANY || + method.call_type==call_type) { // allowed call type? + try { + if(method.native_code) { // native code? + // root unchanged, so that ^for ^foreach & co may write to locals + 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 + root=frame; + { // anti_endless_execute_recoursion + if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) { + anti_endless_execute_recoursion=0; // give @exception a chance + throw Exception("parser.runtime", + &frame->name(), + "call canceled - endless recursion detected"); + } + execute(*method.parser_code); // execute it + anti_endless_execute_recoursion--; + } + } + } catch(...) { + // record it to stack trace + exception_trace.push((void *)&frame->name()); + /*re*/throw; + } + } else + throw Exception("parser.runtime", + &frame->name(), + "is not allowed to be called %s", + call_type==Method::CT_STATIC?"statically":"dynamically"); + } - Value *value=wcontext->result(); + value=&wcontext->result(); wcontext=static_cast(POP()); rcontext=POP(); root=POP(); self=static_cast(POP()); +#ifdef DEBUG_STRING_APPENDS_VS_EXPANDS + if(const String *s=value->get_string()) + wcontext_result_size+=s->used_rows()*sizeof(String::Chunk::Row); +#endif + PUSH(value); - fprintf(stderr, "<-returned"); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "<-returned"); +#endif break; } @@ -360,42 +520,54 @@ void Request::execute(const Array& ops) case OP_NEG: { Value *operand=POP(); - Value *value=NEW VDouble(pool(), -operand->get_double()); + value=NEW VDouble(pool(), -operand->as_double()); PUSH(value); break; } case OP_INV: { Value *operand=POP(); - Value *value=NEW VDouble(pool(), ~(int)operand->get_double()); + value=NEW VDouble(pool(), ~operand->as_int()); PUSH(value); break; } case OP_NOT: { Value *operand=POP(); - Value *value=NEW VBool(pool(), !operand->get_bool()); + value=NEW VBool(pool(), !operand->as_bool()); PUSH(value); break; } case OP_DEF: { Value *operand=POP(); - Value *value=NEW VBool(pool(), operand->get_defined()); + value=NEW VBool(pool(), operand->is_defined()); PUSH(value); break; } case OP_IN: { + /// @test String::cmp Value *operand=POP(); - Value *value=NEW VBool(pool(), true/*TODO*/); + const char *path=operand->as_string().cstr(); + value=NEW VBool(pool(), + info.uri && strncmp(path, info.uri, strlen(path))==0); PUSH(value); break; } case OP_FEXISTS: { Value *operand=POP(); - Value *value=NEW VBool(pool(), true/*TODO*/); + value=NEW VBool(pool(), + file_readable(absolute(operand->as_string()))); + PUSH(value); + break; + } + case OP_DEXISTS: + { + Value *operand=POP(); + value=NEW VBool(pool(), + dir_readable(absolute(operand->as_string()))); PUSH(value); break; } @@ -403,263 +575,374 @@ void Request::execute(const Array& ops) // expression ops: binary case OP_SUB: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), a->get_double() - b->get_double()); + b=POP(); a=POP(); + value=NEW VDouble(pool(), a->as_double() - b->as_double()); PUSH(value); break; } case OP_ADD: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), a->get_double() + b->get_double()); + b=POP(); a=POP(); + value=NEW VDouble(pool(), a->as_double() + b->as_double()); PUSH(value); break; } case OP_MUL: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), a->get_double() * b->get_double()); + b=POP(); a=POP(); + value=NEW VDouble(pool(), a->as_double() * b->as_double()); PUSH(value); break; } case OP_DIV: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), a->get_double() / b->get_double()); + b=POP(); a=POP(); + + double a_double=a->as_double(); + double b_double=b->as_double(); + + if(b_double == 0) { + const String *problem_source=&b->as_string(); +#ifndef NO_STRING_ORIGIN + if(!problem_source->origin().file) + problem_source=&b->name(); +#endif + throw Exception("number.zerodivision", + problem_source, + "Division by zero"); + } + + value=NEW VDouble(pool(), a_double / b_double); PUSH(value); break; } case OP_MOD: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), - (int)a->get_double() % - (int)b->get_double()); + b=POP(); a=POP(); + + double a_double=a->as_double(); + double b_double=b->as_double(); + + if(b_double == 0) { + const String *problem_source=&b->as_string(); +#ifndef NO_STRING_ORIGIN + if(!problem_source->origin().file) + problem_source=&b->name(); +#endif + throw Exception("number.zerodivision", + problem_source, + "Modulus by zero"); + } + + value=NEW VDouble(pool(), fmod(a_double, b_double)); + PUSH(value); + break; + } + case OP_INTDIV: + { + b=POP(); a=POP(); + + int a_int=a->as_int(); + int b_int=b->as_int(); + + if(b_int == 0) { + const String *problem_source=&b->as_string(); +#ifndef NO_STRING_ORIGIN + if(!problem_source->origin().file) + problem_source=&b->name(); +#endif + throw Exception("number.zerodivision", + problem_source, + "Division by zero"); + } + + value=NEW VInt(pool(), a_int / b_int); PUSH(value); break; } case OP_BIN_AND: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), - (int)a->get_double() & - (int)b->get_double()); + b=POP(); a=POP(); + value=NEW VDouble(pool(), + a->as_int() & + b->as_int()); PUSH(value); break; } case OP_BIN_OR: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), - (int)a->get_double() | - (int)b->get_double()); + b=POP(); a=POP(); + value=NEW VDouble(pool(), + a->as_int() | + b->as_int()); PUSH(value); break; } case OP_BIN_XOR: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VDouble(pool(), - (int)a->get_double() ^ - (int)b->get_double()); + b=POP(); a=POP(); + value=NEW VDouble(pool(), + a->as_int() ^ + b->as_int()); PUSH(value); break; } case OP_LOG_AND: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_bool() && b->get_bool()); + b_code=POP_CODE(); a=POP(); + bool result; + if(a->as_bool()) { + execute(*b_code); + b=POP(); + result=b->as_bool(); + } else + result=false; + value=NEW VBool(pool(), result); PUSH(value); break; } case OP_LOG_OR: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_bool() || b->get_bool()); + b_code=POP_CODE(); a=POP(); + bool result; + if(a->as_bool()) + result=true; + else { + execute(*b_code); + b=POP(); + result=b->as_bool(); + } + value=NEW VBool(pool(), result); PUSH(value); break; } case OP_LOG_XOR: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_bool() ^ b->get_bool()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_bool() ^ b->as_bool()); PUSH(value); break; } case OP_NUM_LT: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_double() < b->get_double()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_double() < b->as_double()); PUSH(value); break; } case OP_NUM_GT: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_double() > b->get_double()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_double() > b->as_double()); PUSH(value); break; } case OP_NUM_LE: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_double() <= b->get_double()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_double() <= b->as_double()); PUSH(value); break; } case OP_NUM_GE: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_double() >= b->get_double()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_double() >= b->as_double()); PUSH(value); break; } case OP_NUM_EQ: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_double() == b->get_double()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_double() == b->as_double()); PUSH(value); break; } case OP_NUM_NE: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->get_double() != b->get_double()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_double() != b->as_double()); PUSH(value); break; } case OP_STR_LT: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->as_string() < b->as_string()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_string() < b->as_string()); PUSH(value); break; } case OP_STR_GT: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->as_string() > b->as_string()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_string() > b->as_string()); PUSH(value); break; } case OP_STR_LE: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->as_string() <= b->as_string()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_string() <= b->as_string()); PUSH(value); break; } case OP_STR_GE: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->as_string() >= b->as_string()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_string() >= b->as_string()); PUSH(value); break; } case OP_STR_EQ: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->as_string() == b->as_string()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_string() == b->as_string()); PUSH(value); break; } case OP_STR_NE: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), a->as_string() != b->as_string()); + b=POP(); a=POP(); + value=NEW VBool(pool(), a->as_string() != b->as_string()); PUSH(value); break; } case OP_IS: { - Value *b=POP(); Value *a=POP(); - Value *value=NEW VBool(pool(), b->as_string() == a->type()); + //_asm int 3; + b=POP(); a=POP(); + value=NEW VBool(pool(), b->as_string() == a->type()); PUSH(value); break; } default: - THROW(0,0, + throw Exception(0, 0, - "unhandled '%s' opcode", opcode_name[op.code]); + "invalid opcode %d", op.code); } - fprintf(stderr, "\n"); } } -Value *Request::get_element() { +Value *Request::get_element(bool can_call_operator) { const String& name=POP_NAME(); Value *ncontext=POP(); - Value *value=ncontext->get_element(name); - + Value *value=0; + if(can_call_operator) + if(Method* method=OP.get_method(name)) { // looking operator of that name FIRST + // as if that method were in self and we have normal dynamic method here + Junction& junction=*NEW Junction(pool(), + *root, self->get_class(), method, 0,0,0,0); + value=NEW VJunction(junction); + } + if(!value) + value=ncontext->get_element(name); if(value) - value=&process(*value, &name); // process possible code-junction + value=&process_to_value(*value, &name); // process possible code-junction else { - value=NEW VUnknown(pool()); + value=NEW VVoid(pool()); value->set_name(name); } return value; } -Value& Request::process(Value& value, const String *name, bool intercept_string) { - // 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 (expression) params evaluation +/** @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 - Value *result; - Junction *junction=value.get_junction(); + using the fact it's either string_ or value_ result requested to speed up checkes +*/ +void Request::process_internal( + Value& input_value, const String *result_name, + bool intercept_string, + const String **string_result, Value **value_result) { + Junction *junction=input_value.get_junction(); if(junction && junction->code) { // is it a code-junction? // process it - fprintf(stderr, "ja->\n"); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "ja->\n"); +#endif PUSH(self); PUSH(root); PUSH(rcontext); PUSH(wcontext); WContext *frame; - if(intercept_string) { + // 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 frame=NEW VCodeFrame(pool(), *junction->wcontext); } else { // plain wwrapper - frame=NEW WWrapper(pool(), 0 /* empty */, false /*not constructing*/); + frame=NEW WWrapper(pool(), 0/*empty*/); } + //frame->set_name(value.name()); wcontext=frame; self=&junction->self; root=junction->root; rcontext=junction->rcontext; - execute(*junction->code); - if(intercept_string) { + + { // anti_endless_execute_recoursion + if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) { + anti_endless_execute_recoursion=0; // give @exception a chance + throw Exception("parser.runtime", + result_name, + "junction evaluation canceled - endless recursion detected"); + } + execute(*junction->code); + anti_endless_execute_recoursion--; + } + + if(using_code_frame) { // CodeFrame soul: // string writes were intercepted // returning them as the result of getting code-junction - result=NEW VString(*frame->get_string()); - } else - result=frame->result(); + if(string_result) + *string_result=frame->get_string(); + else + *value_result=NEW VString(*frame->get_string()); + } else { + if(string_result) + *string_result=&frame->result().as_string(); + else { + *value_result=&frame->result(); + if(result_name) + (*value_result)->set_name(*result_name); + } + } wcontext=static_cast(POP()); rcontext=POP(); root=POP(); self=static_cast(POP()); - fprintf(stderr, "<-ja returned"); - } else - result=&value; - - if(name) - result->set_name(*name); - return *result; +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "<-ja returned"); +#endif + } else { + if(string_result) // they asked for string_result + *string_result=&input_value.as_string(); + else {// they asked for value_result + *value_result=&input_value; + if(result_name) + (*value_result)->set_name(*result_name); + } + } } -char *Request::execute_method(Value& aself, const Method& method, bool return_cstr) { +const String *Request::execute_method(Value& aself, const Method& method, + bool return_cstr) { PUSH(self); PUSH(root); PUSH(rcontext); @@ -667,17 +950,38 @@ char *Request::execute_method(Value& ase // initialize contexts root=rcontext=self=&aself; - wcontext=NEW WWrapper(pool(), &aself, false /* not constructing */); + wcontext=NEW WWrapper(pool(), &aself); + + // execute! + execute(*method.parser_code); + + // result + const String *result=return_cstr ? &wcontext->as_string() : 0; + + wcontext=static_cast(POP()); + rcontext=POP(); + root=POP(); + self=static_cast(POP()); + + // return + return result; +} + +const String& Request::execute_method(VMethodFrame& amethodFrame, const Method& method) { + PUSH(self); + PUSH(root); + PUSH(rcontext); + PUSH(wcontext); + + // initialize contexts + root=rcontext=self=&amethodFrame; + wcontext=&amethodFrame; // execute! execute(*method.parser_code); // result - char *result; - if(return_cstr) - result=wcontext->get_string()->cstr(); // chars - else - result=0; // ignore result + const String& result=wcontext->as_string(); wcontext=static_cast(POP()); rcontext=POP(); @@ -688,12 +992,21 @@ char *Request::execute_method(Value& ase return result; } -char *Request::execute_method(Value& aself, - const String& method_name, bool return_cstr) { +const String *Request::execute_virtual_method(Value& aself, + const String& method_name) { if(Value *value=aself.get_element(method_name)) if(Junction *junction=value->get_junction()) if(const Method *method=junction->method) - return execute_method(aself, *method, return_cstr); + return execute_method(aself, *method, true /*return_cstr*/); + + return 0; +} + +const String *Request::execute_nonvirtual_method(VStateless_class& aclass, + const String& method_name, + bool return_cstr) { + if(const Method *method=aclass.get_method(method_name)) + return execute_method(aclass, *method, return_cstr); return 0; }