--- parser3/src/main/execute.C 2001/04/28 08:43:57 1.149 +++ parser3/src/main/execute.C 2001/06/27 12:44:33 1.167 @@ -5,16 +5,15 @@ Author: Alexander Petrosyan (http://design.ru/paf) - $Id: execute.C,v 1.149 2001/04/28 08:43:57 paf Exp $ + $Id: execute.C,v 1.167 2001/06/27 12:44:33 parser Exp $ */ -#include "pa_config_includes.h" -#include "code.h" +#include "pa_opcode.h" #include "pa_array.h" #include "pa_request.h" #include "pa_vstring.h" #include "pa_vhash.h" -#include "pa_vunknown.h" +#include "pa_vvoid.h" #include "pa_vcode_frame.h" #include "pa_vmethod_frame.h" #include "pa_vobject.h" @@ -24,13 +23,11 @@ #include "pa_vfile.h" #include "pa_vimage.h" -#include - -#define PUSH(value) stack.push(value) -#define POP() static_cast(stack.pop()) -#define POP_NAME() static_cast(stack.pop())->as_string() +//#define DEBUG_EXECUTE +const uint ANTI_ENDLESS_EXECUTE_RECOURSION=500; +#ifdef DEBUG_EXECUTE char *opcode_name[]={ // literals "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", @@ -59,75 +56,83 @@ char *opcode_name[]={ "IS" }; -void va_log_printf(Pool& pool, const char *fmt,va_list args) { - return; +void va_debug_printf(Pool& pool, const char *fmt,va_list args) { char buf[MAX_STRING]; vsnprintf(buf, MAX_STRING, fmt, args); SAPI::log(pool, "%s", buf); } -void log_printf(Pool& pool, const char *fmt, ...) { +void debug_printf(Pool& pool, const char *fmt, ...) { va_list args; va_start(args,fmt); - va_log_printf(pool,fmt,args); + va_debug_printf(pool,fmt,args); va_end(args); } -void dump(Pool& pool, int level, const Array& ops) { - if(0){ +void debug_dump(Pool& pool, int level, const Array& ops) { + { int size=ops.quick_size(); - //log_printf(pool, "size=%d\n", size); + //debug_printf(pool, "size=%d\n", size); for(int i=0; i(ops.quick_get(++i)); - log_printf(pool, + debug_printf(pool, "%*s%s" " \"%s\" %s", level*4, "", opcode_name[op.code], value->get_string()->cstr(), value->type()); continue; } - log_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]); + debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]); if(op.code==OP_CURLY_CODE__STORE_PARAM || op.code==OP_EXPR_CODE__STORE_PARAM) { const Array *local_ops=reinterpret_cast(ops.quick_get(++i)); - dump(pool, level+1, *local_ops); + debug_dump(pool, level+1, *local_ops); } } } +#endif + +#define PUSH(value) stack.push(value) +#define POP() static_cast(stack.pop()) +#define POP_NAME() static_cast(stack.pop())->as_string() void Request::execute(const Array& ops) { - if(1) { - log_printf(pool(), "source----------------------------\n"); - dump(pool(), 0, ops); - log_printf(pool(), "execution-------------------------\n"); - } +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "source----------------------------\n"); + debug_dump(pool(), 0, ops); + debug_printf(pool(), "execution-------------------------\n"); +#endif int size=ops.quick_size(); - //log_printf(pool(), "size=%d\n", size); + //debug_printf(pool(), "size=%d\n", size); for(int i=0; i(ops.quick_get(++i)); - log_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type()); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type()); +#endif PUSH(value); break; } @@ -137,9 +142,10 @@ void Request::execute(const Array& ops) VMethodFrame *frame=static_cast(stack.top_value()); // code const Array *local_ops=reinterpret_cast(ops.quick_get(++i)); - log_printf(pool(), " (%d)\n", local_ops->size()); - dump(pool(), 1, *local_ops); - +#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 @@ -221,6 +227,10 @@ void Request::execute(const Array& ops) { Value *value=POP(); write_assign_lang(*value); + + // forget the fact they've entered some ^object.method[]. + // see OP_GET_ELEMENT + wcontext->clear_somebody_entered_some_object(); break; } case OP_WRITE_EXPR_RESULT: @@ -232,13 +242,18 @@ void Request::execute(const Array& ops) case OP_STRING__WRITE: { VString *vstring=static_cast(ops.quick_get(++i)); - log_printf(pool(), " \"%s\"", vstring->string().cstr()); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), " \"%s\"", vstring->string().cstr()); +#endif write_no_lang(vstring->string()); break; } case OP_GET_ELEMENT: { + // maybe they do ^object.method[] call, remember the fact + wcontext->inc_somebody_entered_some_object(); + Value *value=get_element(); PUSH(value); break; @@ -285,7 +300,7 @@ void Request::execute(const Array& ops) if(string) value=NEW VString(*string); else - value=NEW VUnknown(pool()); + value=NEW VVoid(pool()); wcontext=static_cast(POP()); rcontext=POP(); PUSH(value); @@ -306,7 +321,7 @@ 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; @@ -333,8 +348,7 @@ void Request::execute(const Array& ops) if(is_constructor) wcontext->constructing(false); - VMethodFrame *frame=NEW VMethodFrame(pool(), *junction, is_constructor); - frame->set_name(value->name()); + VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction, is_constructor); PUSH(frame); break; } @@ -348,7 +362,9 @@ void Request::execute(const Array& ops) case OP_CALL: { - log_printf(pool(), "->\n"); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "->\n"); +#endif VMethodFrame *frame=static_cast(POP()); frame->fill_unspecified_params(); PUSH(self); @@ -357,12 +373,19 @@ 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? + // not ^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(read_class && read_class->is_or_derived_from(*called_class)) // yes + if(!wcontext->somebody_entered_some_object() && + 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(frame->is_constructor) { + // were are constructing something and + // our constructor is just method call and + // not static-only-method call + if(frame->is_constructor && + wcontext->somebody_entered_some_object()==1 && + frame->junction.method->call_type!=Method::CT_STATIC) { // this is a constructor call // some stateless_object creatable derivates if(Value *value=called_class->create_new_value(pool())) @@ -389,14 +412,23 @@ void Request::execute(const Array& ops) method.call_type==Method::CT_ANY || method.call_type==call_type) // allowed call type? if(method.native_code) { // native code? - method.check_actual_numbered_params( + method.check_actual_numbered_params(pool(), frame->junction.self, frame->name(), frame->numbered_params()); - (*method.native_code)( + method.native_code( *this, frame->name(), frame->numbered_params()); // execute it - } else // parser code + } else { // parser code + if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) { + anti_endless_execute_recoursion=0; // give @exception a chance + THROW(0, 0, + &frame->name(), + "endless recursion detected"); + } + execute(*method.parser_code); // execute it + anti_endless_execute_recoursion--; + } else THROW(0, 0, &frame->name(), @@ -412,7 +444,9 @@ void Request::execute(const Array& ops) self=static_cast(POP()); PUSH(value); - log_printf(pool(), "<-returned"); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "<-returned"); +#endif break; } @@ -427,7 +461,7 @@ void Request::execute(const Array& ops) case OP_INV: { Value *operand=POP(); - Value *value=NEW VDouble(pool(), ~(int)operand->as_double()); + Value *value=NEW VDouble(pool(), ~operand->as_int()); PUSH(value); break; } @@ -449,7 +483,8 @@ void Request::execute(const Array& ops) { Value *operand=POP(); const char *path=operand->as_string().cstr(); - Value *value=NEW VBool(pool(), info.uri && strcmp(path, info.uri)<=0); + Value *value=NEW VBool(pool(), + info.uri && strncmp(path, info.uri, strlen(path))==0); PUSH(value); break; } @@ -503,8 +538,8 @@ void Request::execute(const Array& ops) { Value *b=POP(); Value *a=POP(); Value *value=NEW VDouble(pool(), - (int)a->as_double() % - (int)b->as_double()); + a->as_int() % + b->as_int()); PUSH(value); break; } @@ -512,8 +547,8 @@ void Request::execute(const Array& ops) { Value *b=POP(); Value *a=POP(); Value *value=NEW VDouble(pool(), - (int)a->as_double() & - (int)b->as_double()); + a->as_int() & + b->as_int()); PUSH(value); break; } @@ -521,8 +556,8 @@ void Request::execute(const Array& ops) { Value *b=POP(); Value *a=POP(); Value *value=NEW VDouble(pool(), - (int)a->as_double() | - (int)b->as_double()); + a->as_int() | + b->as_int()); PUSH(value); break; } @@ -530,8 +565,8 @@ void Request::execute(const Array& ops) { Value *b=POP(); Value *a=POP(); Value *value=NEW VDouble(pool(), - (int)a->as_double() ^ - (int)b->as_double()); + a->as_int() ^ + b->as_int()); PUSH(value); break; } @@ -670,15 +705,14 @@ Value *Request::get_element() { if(value) value=&process(*value, &name); // process possible code-junction else { - value=NEW VUnknown(pool()); + value=NEW VVoid(pool()); value->set_name(name); } return value; } -/** - intercept_string: +/** @param intercept_string - true: they want result=string value, possible object result goes to wcontext @@ -692,7 +726,9 @@ Value& Request::process(Value& value, co Junction *junction=value.get_junction(); if(junction && junction->code) { // is it a code-junction? // process it - log_printf(pool(), "ja->\n"); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "ja->\n"); +#endif PUSH(self); PUSH(root); PUSH(rcontext); @@ -730,7 +766,9 @@ Value& Request::process(Value& value, co root=POP(); self=static_cast(POP()); - log_printf(pool(), "<-ja returned"); +#ifdef DEBUG_EXECUTE + debug_printf(pool(), "<-ja returned"); +#endif } else result=&value;