--- parser3/src/main/execute.C 2001/02/23 17:48:00 1.30 +++ parser3/src/main/execute.C 2001/03/13 14:28:51 1.103 @@ -1,5 +1,9 @@ /* - $Id: execute.C,v 1.30 2001/02/23 17:48:00 paf Exp $ + Parser + Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) + Author: Alexander Petrosyan (http://design.ru/paf) + + $Id: execute.C,v 1.103 2001/03/13 14:28:51 paf Exp $ */ #include "pa_array.h" @@ -8,90 +12,141 @@ #include "pa_vstring.h" #include "pa_vhash.h" #include "pa_vunknown.h" -#include "pa_vframe.h" -#include "pa_wwrapper.h" +#include "pa_vcframe.h" +#include "pa_vmframe.h" +#include "pa_vobject.h" +#include "pa_vdouble.h" +#include "pa_vbool.h" +#include "pa_vtable.h" #include #define PUSH(value) stack.push(value) #define POP() static_cast(stack.pop()) -#define POP_SR() static_cast(stack.pop())->as_string() +#define POP_NAME() static_cast(stack.pop())->as_string() char *opcode_name[]={ - "STRING", "CODE_ARRAY", - "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", - "CONSTRUCT", - "EXPRESSION_EVAL", "MODIFY_EVAL", - "WRITE", + // literals + "VALUE", "CODE__STORE_PARAM", + + // actions + "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE", + "GET_CLASS", + "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE", + "WRITE", "STRING__WRITE", "GET_ELEMENT", "GET_ELEMENT__WRITE", "CREATE_EWPOOL", "REDUCE_EWPOOL", "CREATE_RWPOOL", "REDUCE_RWPOOL", + "CREATE_SWPOOL", "REDUCE_SWPOOL", "GET_METHOD_FRAME", - "CREATE_JUNCTION", "STORE_PARAM", - "CALL" + "CALL", + + // expression ops: unary + "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", + // expression ops: binary + "SUB", "ADD", "MUL", "DIV", "MOD", + "BIN_AND", "BIN_OR", "BIN_XOR", + "LOG_AND", "LOG_OR", "LOG_XOR", + "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE", + "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE", + "IS" }; void dump(int level, const Array& ops) { if(0){ int size=ops.size(); - //printf("size=%d\n", size); + //fprintf(stderr, "size=%d\n", size); for(int i=0; i(ops.quick_get(++i)); - printf(" \"%s\"", vstring->get_string()->cstr()); + if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { + Value *value=static_cast(ops.quick_get(++i)); + fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); } - printf("\n"); + fprintf(stderr, "\n"); - if(op.code==OP_CODE_ARRAY) { + if(op.code==OP_CODE__STORE_PARAM) { const Array *local_ops=reinterpret_cast(ops.quick_get(++i)); dump(level+1, *local_ops); } } + fflush(stderr); } -void Request::execute(Array& ops) { +void Request::execute(const Array& ops) { if(1) { - puts("---------------------------"); + fputs("source----------------------------\n", stderr); dump(0, ops); - puts("---------------------------"); + fputs("execution-------------------------\n", stderr); } int size=ops.size(); - //printf("size=%d\n", size); + //fprintf(stderr, "size=%d\n", size); for(int i=0; i(ops.quick_get(++i)); - //dump(level+1, *local_ops); - } - switch(op.code) { - case OP_WITH_WRITE: + // param in next instruction + case OP_VALUE: { - PUSH(wcontext); + Value *value=static_cast(ops.quick_get(++i)); + fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); + PUSH(value); break; } - case OP_WITH_READ: + case OP_CODE__STORE_PARAM: { - PUSH(rcontext); + 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); + + Junction& j=*NEW Junction(pool(), + *self, 0, 0, + root, frame, frame, local_ops); + + Value *value=NEW VJunction(j); + + // store param + frame->store_param(frame->name(), value); + break; + } + case OP_GET_CLASS: + { + // maybe the 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, + &name, + ": undefined class"); + + PUSH(vclass); + break; + } + + // OP_WITH + case OP_WITH_SELF: + { + PUSH(self); break; } case OP_WITH_ROOT: @@ -99,34 +154,47 @@ void Request::execute(Array& ops) { PUSH(root); break; } - case OP_WITH_SELF: + case OP_WITH_READ: { - PUSH(self); + PUSH(rcontext); break; } - - case OP_STRING: + case OP_WITH_WRITE: { - VString *vstring=static_cast(ops.quick_get(++i)); - printf(" \"%s\"", vstring->get_string()->cstr()); - PUSH(vstring); + PUSH(wcontext); break; } - case OP_CONSTRUCT: + // OTHER ACTIONS BUT WITHs + case OP_CONSTRUCT_VALUE: { Value *value=POP(); - String& name=POP_SR(); + const String& name=POP_NAME(); Value *ncontext=POP(); - value->set_name(name); ncontext->put_element(name, value); + value->set_name(name); + break; + } + case OP_CONSTRUCT_EXPR: + { + Value *value=POP(); + const String& name=POP_NAME(); + Value *ncontext=POP(); + ncontext->put_element(name, value->get_expr_result()); + value->set_name(name); break; } - case OP_WRITE: { Value *value=POP(); - wcontext->write(value); + write_assign_lang(*value); + break; + } + case OP_STRING__WRITE: + { + VString *vstring=static_cast(ops.quick_get(++i)); + fprintf(stderr, " \"%s\"", vstring->value().cstr()); + write(vstring->value()); break; } @@ -140,19 +208,20 @@ void Request::execute(Array& ops) { case OP_GET_ELEMENT__WRITE: { Value *value=get_element(); - wcontext->write(value); + write_assign_lang(*value); break; } + case OP_CREATE_EWPOOL: { PUSH(wcontext); - wcontext=NEW WWrapper(pool(), 0 /* empty */); + wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */); break; } case OP_REDUCE_EWPOOL: { - Value *value=wcontext->value(); + Value *value=wcontext->result(); wcontext=static_cast(POP()); PUSH(value); break; @@ -164,80 +233,467 @@ void Request::execute(Array& ops) { PUSH(rcontext); rcontext=ncontext; PUSH(wcontext); - wcontext=NEW WWrapper(pool(), ncontext); + wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */); break; } case OP_REDUCE_RWPOOL: { - String *string=wcontext->get_string(); - Value *value=NEW VString(string); + 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 */); + break; + } + case OP_REDUCE_SWPOOL: + { + // from "$a $b" part of expression taking only string value, + // ignoring any other content of wcontext + const String *string=wcontext->get_string(); + Value *value; + if(string) + value=NEW VString(*string); + else + NEW VUnknown(pool()); + wcontext=static_cast(POP()); + PUSH(value); + break; + } + // CALL case OP_GET_METHOD_FRAME: { - String& name=POP_SR(); // ýòî áûâàåò junction, íå name - Value *ncontext=static_cast(stack[0]); - // [self/class?;params;local;code/native_code](name) - Method *method=ncontext->get_method(name); - if(!method) + Value *value=POP(); + // info: this one's always method-junction, not a code-junction + Junction *junction=value->get_junction(); + if(!junction) THROW(0,0, - &name, - "method not found in %s", ncontext->name()->cstr()); - //unless(method) method=operators.get_method[...;code/native_code](name) - VFrame *frame=NEW VFrame(pool(), *method); + &value->name(), + "(%s) uncallable, must be method or junction", + value->type()); + + VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); + //frame->set_name(junction->self.name()); + frame->set_name(value->name()); PUSH(frame); break; } case OP_STORE_PARAM: { Value *value=POP(); - VFrame *frame=static_cast(stack[0]); - frame->store_param(value); + VMethodFrame *frame=static_cast(stack.top_value()); + frame->store_param(frame->name(), value); break; } case OP_CALL: { - printf("->\n"); - VFrame *frame=static_cast(POP()); - Value *ncontext=POP(); - PUSH(root); PUSH(self); PUSH(rcontext); PUSH(wcontext); - //left_class=ncontext.get_class() - //right_class=frame.self.get_class() - //self=f(left_class[thoughts' food], right_self[junction], right_class[static], wcontext.value()[dynamic], new(right_class)[construct]) - self=rcontext; - frame->set_self(self); + fprintf(stderr, "->\n"); + VMethodFrame *frame=static_cast(POP()); + frame->fill_unspecified_params(); + PUSH(self); + PUSH(root); + PUSH(rcontext); + 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); + frame->write(*self, + String::Untaint_lang::NO // not used, always an object, not string + ); + } else + self=&frame->junction.self; // no, static or simple dynamic call + + frame->set_self(*self); root=rcontext=wcontext=frame; - execute(frame->method.code); - Value *value=wcontext->value(); - wcontext=static_cast(POP()); rcontext=POP(); self=POP(); root=POP(); - wcontext->write(value); - printf("<-returned"); + { + // 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 + } + Value *value=wcontext->result(); + + wcontext=static_cast(POP()); + rcontext=POP(); + root=POP(); + self=static_cast(POP()); + + PUSH(value); + fprintf(stderr, "<-returned"); + break; + } + + // expression ops: unary + case OP_NEG: + { + Value *operand=POP(); + Value *value=NEW VDouble(pool(), -operand->get_double()); + PUSH(value); + break; + } + case OP_INV: + { + Value *operand=POP(); + Value *value=NEW VDouble(pool(), ~(int)operand->get_double()); + PUSH(value); + break; + } + case OP_NOT: + { + Value *operand=POP(); + Value *value=NEW VBool(pool(), !operand->get_bool()); + PUSH(value); + break; + } + case OP_DEF: + { + Value *operand=POP(); + Value *value=NEW VBool(pool(), operand->get_defined()); + PUSH(value); + break; + } + case OP_IN: + { + Value *operand=POP(); + Value *value=NEW VBool(pool(), true/*TODO*/); + PUSH(value); + break; + } + case OP_FEXISTS: + { + Value *operand=POP(); + Value *value=NEW VBool(pool(), true/*TODO*/); + PUSH(value); break; } + // expression ops: binary + case OP_SUB: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VDouble(pool(), a->get_double() - b->get_double()); + PUSH(value); + break; + } + case OP_ADD: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VDouble(pool(), a->get_double() + b->get_double()); + PUSH(value); + break; + } + case OP_MUL: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VDouble(pool(), a->get_double() * b->get_double()); + PUSH(value); + break; + } + case OP_DIV: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VDouble(pool(), a->get_double() / b->get_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()); + 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()); + 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()); + 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()); + PUSH(value); + break; + } + case OP_LOG_AND: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VBool(pool(), a->get_bool() && b->get_bool()); + PUSH(value); + break; + } + case OP_LOG_OR: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VBool(pool(), a->get_bool() || b->get_bool()); + PUSH(value); + break; + } + case OP_LOG_XOR: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VBool(pool(), a->get_bool() ^ b->get_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()); + PUSH(value); + break; + } + case OP_NUM_GT: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VBool(pool(), a->get_double() > b->get_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()); + PUSH(value); + break; + } + case OP_NUM_GE: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VBool(pool(), a->get_double() >= b->get_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()); + PUSH(value); + break; + } + case OP_NUM_NE: + { + Value *b=POP(); Value *a=POP(); + Value *value=NEW VBool(pool(), a->get_double() != b->get_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()); + PUSH(value); + break; + } + case OP_STR_GT: + { + Value *b=POP(); Value *a=POP(); + Value *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()); + PUSH(value); + break; + } + case OP_STR_GE: + { + Value *b=POP(); Value *a=POP(); + Value *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()); + PUSH(value); + break; + } + case OP_STR_NE: + { + Value *b=POP(); Value *a=POP(); + Value *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()); + PUSH(value); + break; + } default: - printf("\tTODO"); - break; + THROW(0,0, + 0, + "unhandled '%s' opcode", opcode_name[op.code]); } - printf("\n"); + fprintf(stderr, "\n"); } } Value *Request::get_element() { - String& name=POP_SR(); + const String& name=POP_NAME(); Value *ncontext=POP(); - Value *value=ncontext->get_element(name); // name áûâàåò method, òîãäà âûäà¸ò new junction(ÀÂÒÎÂÛ×ÈÑËßÒÜ=false, root,self,rcontext,wcontext,code) - // name áûâàåò èìÿ junction, òîãäà èëè îñòàâëÿåò â ïîêîå, èëè âû÷èñëÿåò â çàâèñèìîñòè îò ôëàãà ÀÂÒÎÂÛ×ÈÑËßÒÜ + Value *value=ncontext->get_element(name); - if(!value) { + if(value) + value=&process(*value, &name); // process possible code-junction + else { value=NEW VUnknown(pool()); value->set_name(name); } + return value; -} \ No newline at end of file +} + +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 + + Value *result; + Junction *junction=value.get_junction(); + if(junction && junction->code) { // is it a code-junction? + // process it + fprintf(stderr, "ja->\n"); + PUSH(self); + PUSH(root); + PUSH(rcontext); + PUSH(wcontext); + + WContext *frame; + if(intercept_string) { + // 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*/); + } + + wcontext=frame; + self=&junction->self; + root=junction->root; + rcontext=junction->rcontext; + execute(*junction->code); + if(intercept_string) { + // 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(); + + 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; +} + +char *Request::execute_method(Value& aself, const Method& method, bool return_cstr) { + PUSH(self); + PUSH(root); + PUSH(rcontext); + PUSH(wcontext); + + // initialize contexts + root=rcontext=self=&aself; + wcontext=NEW WWrapper(pool(), &aself, false /* not constructing */); + + // execute! + execute(*method.parser_code); + + // result + char *result; + if(return_cstr) + result=wcontext->get_string()->cstr(); // chars + else + result=0; // ignore result + + wcontext=static_cast(POP()); + rcontext=POP(); + root=POP(); + self=static_cast(POP()); + + // return + return result; +} + +char *Request::execute_method(Value& aself, + const String& method_name, bool return_cstr) { + 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 0; +}