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| version 1.70, 2001/03/08 13:13:41 | version 1.104, 2001/03/13 19:35:06 |
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| Line 1 | Line 1 |
| /* | /* |
| $Id$ | Parser |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | |
| */ | */ |
| #include "pa_array.h" | #include "pa_array.h" |
| Line 13 | Line 17 |
| #include "pa_vobject.h" | #include "pa_vobject.h" |
| #include "pa_vdouble.h" | #include "pa_vdouble.h" |
| #include "pa_vbool.h" | #include "pa_vbool.h" |
| #include "pa_vtable.h" | |
| #include <stdio.h> | #include <stdio.h> |
| Line 28 char *opcode_name[]={ | Line 33 char *opcode_name[]={ |
| // actions | // actions |
| "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE", | "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE", |
| "GET_CLASS", | "GET_CLASS", |
| "CONSTRUCT", | "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE", |
| "WRITE", | "WRITE", "STRING__WRITE", |
| "GET_ELEMENT", "GET_ELEMENT__WRITE", | "GET_ELEMENT", "GET_ELEMENT__WRITE", |
| "CREATE_EWPOOL", "REDUCE_EWPOOL", | "CREATE_EWPOOL", "REDUCE_EWPOOL", |
| "CREATE_RWPOOL", "REDUCE_RWPOOL", | "CREATE_RWPOOL", "REDUCE_RWPOOL", |
| Line 45 char *opcode_name[]={ | Line 50 char *opcode_name[]={ |
| "BIN_AND", "BIN_OR", "BIN_XOR", | "BIN_AND", "BIN_OR", "BIN_XOR", |
| "LOG_AND", "LOG_OR", "LOG_XOR", | "LOG_AND", "LOG_OR", "LOG_XOR", |
| "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE", | "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE", |
| "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE" | "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE", |
| "IS" | |
| }; | }; |
| void dump(int level, const Array& ops) { | void dump(int level, const Array& ops) { |
| Line 66 void dump(int level, const Array& ops) { | Line 72 void dump(int level, const Array& ops) { |
| op.cast=ops.quick_get(i); | op.cast=ops.quick_get(i); |
| fprintf(stderr, "%*s%s", level*4, "", opcode_name[op.code]); | fprintf(stderr, "%*s%s", level*4, "", opcode_name[op.code]); |
| if(op.code==OP_VALUE) { | if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { |
| Value *value=static_cast<Value *>(ops.quick_get(++i)); | Value *value=static_cast<Value *>(ops.quick_get(++i)); |
| fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); | fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type()); |
| } | } |
| Line 92 void Request::execute(const Array& ops) | Line 98 void Request::execute(const Array& ops) |
| for(int i=0; i<size; i++) { | for(int i=0; i<size; i++) { |
| Operation op; | Operation op; |
| op.cast=ops.quick_get(i); | op.cast=ops.quick_get(i); |
| fprintf(stderr, "%d:%s", stack.top()+1, opcode_name[op.code]); fflush(stderr); | fprintf(stderr, "%d:%s", stack.top_index()+1, opcode_name[op.code]); fflush(stderr); |
| switch(op.code) { | switch(op.code) { |
| // param in next instruction | // param in next instruction |
| Line 105 void Request::execute(const Array& ops) | Line 111 void Request::execute(const Array& ops) |
| } | } |
| case OP_CODE__STORE_PARAM: | case OP_CODE__STORE_PARAM: |
| { | { |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack[stack.top()]); | VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); |
| // code | // code |
| const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); | const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); |
| fprintf(stderr, " (%d)\n", local_ops->size()); | fprintf(stderr, " (%d)\n", local_ops->size()); |
| Line 116 void Request::execute(const Array& ops) | Line 122 void Request::execute(const Array& ops) |
| root, frame, frame, local_ops); | root, frame, frame, local_ops); |
| Value *value=NEW VJunction(j); | Value *value=NEW VJunction(j); |
| value->set_name(frame->name()); | |
| // store param | // store param |
| frame->store_param(value); | frame->store_param(frame->name(), value); |
| break; | break; |
| } | } |
| case OP_GET_CLASS: | case OP_GET_CLASS: |
| { | { |
| String& name=POP_NAME(); | // maybe the do ^class:method[] call, remember the fact |
| wcontext->set_somebody_entered_some_class(); | |
| const String& name=POP_NAME(); | |
| VClass *vclass=static_cast<VClass *>(classes().get(name)); | VClass *vclass=static_cast<VClass *>(classes().get(name)); |
| if(!vclass) | if(!vclass) |
| THROW(0,0, | THROW(0,0, |
| Line 158 void Request::execute(const Array& ops) | Line 166 void Request::execute(const Array& ops) |
| } | } |
| // OTHER ACTIONS BUT WITHs | // OTHER ACTIONS BUT WITHs |
| case OP_CONSTRUCT: | case OP_CONSTRUCT_VALUE: |
| { | { |
| Value *value=POP(); | Value *value=POP(); |
| String& name=POP_NAME(); | const String& name=POP_NAME(); |
| Value *ncontext=POP(); | Value *ncontext=POP(); |
| value->set_name(name); | |
| ncontext->put_element(name, value); | 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; | break; |
| } | } |
| case OP_WRITE: | case OP_WRITE: |
| { | { |
| Value *value=POP(); | Value *value=POP(); |
| wcontext->write(*value); | write_assign_lang(*value); |
| break; | |
| } | |
| case OP_STRING__WRITE: | |
| { | |
| VString *vstring=static_cast<VString *>(ops.quick_get(++i)); | |
| fprintf(stderr, " \"%s\"", vstring->value().cstr()); | |
| write(vstring->value()); | |
| break; | break; |
| } | } |
| Line 184 void Request::execute(const Array& ops) | Line 208 void Request::execute(const Array& ops) |
| case OP_GET_ELEMENT__WRITE: | case OP_GET_ELEMENT__WRITE: |
| { | { |
| Value *value=get_element(); | Value *value=get_element(); |
| wcontext->write(*value); | write_assign_lang(*value); |
| break; | break; |
| } | } |
| Line 214 void Request::execute(const Array& ops) | Line 238 void Request::execute(const Array& ops) |
| } | } |
| case OP_REDUCE_RWPOOL: | case OP_REDUCE_RWPOOL: |
| { | { |
| String *string=wcontext->get_string(); | const String *string=wcontext->get_string(); |
| Value *value=string?NEW VString(*string):NEW VString(pool()); | Value *value; |
| if(string) | |
| value=NEW VString(*string); | |
| else | |
| value=NEW VUnknown(pool()); | |
| wcontext=static_cast<WContext *>(POP()); | wcontext=static_cast<WContext *>(POP()); |
| rcontext=POP(); | rcontext=POP(); |
| PUSH(value); | PUSH(value); |
| Line 231 void Request::execute(const Array& ops) | Line 259 void Request::execute(const Array& ops) |
| { | { |
| // 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(); | const String *string=wcontext->get_string(); |
| Value *value=string?NEW VString(*string):NEW VString(pool()); | Value *value; |
| if(string) | |
| value=NEW VString(*string); | |
| else | |
| NEW VUnknown(pool()); | |
| wcontext=static_cast<WContext *>(POP()); | wcontext=static_cast<WContext *>(POP()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| Line 247 void Request::execute(const Array& ops) | Line 279 void Request::execute(const Array& ops) |
| if(!junction) | if(!junction) |
| THROW(0,0, | THROW(0,0, |
| &value->name(), | &value->name(), |
| "type is '%s', can not call it (must be method or junction)", | "(%s) uncallable, must be method or junction", |
| value->type()); | value->type()); |
| VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); | VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); |
| frame->set_name(junction->self.name()); | //frame->set_name(value->name()); |
| PUSH(frame); | PUSH(frame); |
| break; | break; |
| } | } |
| case OP_STORE_PARAM: | case OP_STORE_PARAM: |
| { | { |
| Value *value=POP(); | Value *value=POP(); |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack[0]); | VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); |
| frame->store_param(value); | frame->store_param(frame->name(), value); |
| break; | break; |
| } | } |
| Line 273 void Request::execute(const Array& ops) | Line 305 void Request::execute(const Array& ops) |
| PUSH(rcontext); | PUSH(rcontext); |
| PUSH(wcontext); | PUSH(wcontext); |
| VClass *called_class=frame->junction.self.get_class(); | VStateless_class *called_class=frame->junction.self.get_class(); |
| // constructing? | // is context object or class & is it my class or my parent's class? |
| if(wcontext->constructing()) { // yes | VStateless_class *read_class=rcontext->get_class(); |
| // constructor call: $some(^class:method(..)) | if(read_class && read_class->is_or_derived_from(*called_class)) // yes |
| self=NEW VObject(pool(), *called_class); | self=rcontext; // class dynamic call |
| frame->write(*self); | else // no, not me or relative of mine (total stranger) |
| } else { // no | if( |
| // context is object or class & is it my class or my parent's class? | wcontext->constructing() && // constructing? |
| VClass *read_class=rcontext->get_class(); | wcontext->somebody_entered_some_class()) { // ^class:method[..]? |
| if(read_class && read_class->is_or_derived_from(*called_class)) // yes | // yes, this is a constructor call |
| self=rcontext; // class dynamic call | if(called_class->name()==TABLE_CLASS_NAME) |
| else // no | self=NEW VTable(pool()); |
| self=&frame->junction.self; // static or simple dynamic call | 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); | frame->set_self(*self); |
| root=rcontext=wcontext=frame; | root=rcontext=wcontext=frame; |
| { | { |
| // take object or class from any wrappers | // take object or class from any wrappers |
| VAliased *aliased=self->get_aliased(); | // and substitute class alias to the class they are called AS |
| // substitute class alias to the class they are called AS | Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass); |
| Temp_alias temp_alias(*aliased, *frame->junction.vclass); | |
| const Method& method=*frame->junction.method; | |
| Method& method=*frame->junction.method; | if(method.native_code) { // native code? |
| if(method.native_code) // native code? | method.check_actual_numbered_params( |
| (*method.native_code)(*this, frame->numbered_params()); // execute it | frame->name(), frame->numbered_params()); |
| else // parser code | (*method.native_code)(*this, |
| frame->name(), frame->numbered_params()); // execute it | |
| } else // parser code | |
| execute(*method.parser_code); // execute it | execute(*method.parser_code); // execute it |
| } | } |
| Value *value=wcontext->result(); | Value *value=wcontext->result(); |
| Line 324 void Request::execute(const Array& ops) | Line 366 void Request::execute(const Array& ops) |
| case OP_INV: | case OP_INV: |
| { | { |
| Value *operand=POP(); | Value *operand=POP(); |
| Value *value=NEW VDouble(pool(), | Value *value=NEW VDouble(pool(), ~(int)operand->get_double()); |
| ~static_cast<int>(operand->get_double())); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| Line 391 void Request::execute(const Array& ops) | Line 432 void Request::execute(const Array& ops) |
| { | { |
| Value *b=POP(); Value *a=POP(); | Value *b=POP(); Value *a=POP(); |
| Value *value=NEW VDouble(pool(), | Value *value=NEW VDouble(pool(), |
| static_cast<int>(a->get_double()) % | (int)a->get_double() % |
| static_cast<int>(b->get_double())); | (int)b->get_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| Line 400 void Request::execute(const Array& ops) | Line 441 void Request::execute(const Array& ops) |
| { | { |
| Value *b=POP(); Value *a=POP(); | Value *b=POP(); Value *a=POP(); |
| Value *value=NEW VDouble(pool(), | Value *value=NEW VDouble(pool(), |
| static_cast<int>(a->get_double()) & | (int)a->get_double() & |
| static_cast<int>(b->get_double())); | (int)b->get_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| Line 409 void Request::execute(const Array& ops) | Line 450 void Request::execute(const Array& ops) |
| { | { |
| Value *b=POP(); Value *a=POP(); | Value *b=POP(); Value *a=POP(); |
| Value *value=NEW VDouble(pool(), | Value *value=NEW VDouble(pool(), |
| static_cast<int>(a->get_double()) | | (int)a->get_double() | |
| static_cast<int>(b->get_double())); | (int)b->get_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| Line 418 void Request::execute(const Array& ops) | Line 459 void Request::execute(const Array& ops) |
| { | { |
| Value *b=POP(); Value *a=POP(); | Value *b=POP(); Value *a=POP(); |
| Value *value=NEW VDouble(pool(), | Value *value=NEW VDouble(pool(), |
| static_cast<int>(a->get_double()) ^ | (int)a->get_double() ^ |
| static_cast<int>(b->get_double())); | (int)b->get_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| Line 528 void Request::execute(const Array& ops) | Line 569 void Request::execute(const Array& ops) |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_IS: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *value=NEW VBool(pool(), b->as_string() == a->type()); | |
| PUSH(value); | |
| break; | |
| } | |
| default: | default: |
| THROW(0,0, | THROW(0,0, |
| Line 539 void Request::execute(const Array& ops) | Line 587 void Request::execute(const Array& ops) |
| } | } |
| Value *Request::get_element() { | Value *Request::get_element() { |
| String& name=POP_NAME(); | const String& name=POP_NAME(); |
| Value *ncontext=POP(); | Value *ncontext=POP(); |
| Value *value=ncontext->get_element(name); | Value *value=ncontext->get_element(name); |
| // autocalc possible code-junction | if(value) |
| value=value?&autocalc(*value):NEW VUnknown(pool()); | value=&process(*value, &name); // process possible code-junction |
| else { | |
| value=NEW VUnknown(pool()); | |
| value->set_name(name); | |
| } | |
| value->set_name(name); | |
| return value; | return value; |
| } | } |
| Value& Request::autocalc(Value& 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 | |
| Value *result; | |
| Junction *junction=value.get_junction(); | Junction *junction=value.get_junction(); |
| if(junction && junction->code) { // is it a code-junction? | if(junction && junction->code) { // is it a code-junction? |
| // autocalc it | // process it |
| fprintf(stderr, "ja->\n"); | fprintf(stderr, "ja->\n"); |
| PUSH(self); | PUSH(self); |
| PUSH(root); | PUSH(root); |
| PUSH(rcontext); | PUSH(rcontext); |
| PUSH(wcontext); | PUSH(wcontext); |
| // almost plain wwrapper about junction wcontext, | WContext *frame; |
| // BUT intercepts string writes | if(intercept_string) { |
| VCodeFrame frame(pool(), *junction->wcontext); wcontext=&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*/); | |
| } | |
| wcontext=frame; | |
| self=&junction->self; | self=&junction->self; |
| root=junction->root; | root=junction->root; |
| rcontext=junction->rcontext; | rcontext=junction->rcontext; |
| execute(*junction->code); | execute(*junction->code); |
| // CodeFrame soul: | if(intercept_string) { |
| // string writes were intercepted | // CodeFrame soul: |
| // returning them as the result of getting code-junction | // string writes were intercepted |
| Value& result=*NEW VString(*frame.get_string()); | // returning them as the result of getting code-junction |
| result=NEW VString(*frame->get_string()); | |
| } else | |
| result=frame->result(); | |
| wcontext=static_cast<WContext *>(POP()); | wcontext=static_cast<WContext *>(POP()); |
| rcontext=POP(); | rcontext=POP(); |
| Line 578 Value& Request::autocalc(Value& value) { | Line 650 Value& Request::autocalc(Value& value) { |
| self=static_cast<VAliased *>(POP()); | self=static_cast<VAliased *>(POP()); |
| fprintf(stderr, "<-ja returned"); | fprintf(stderr, "<-ja returned"); |
| return result; | |
| } else | } else |
| return value; | result=&value; |
| if(name) | |
| result->set_name(*name); | |
| return *result; | |
| } | } |
| void Request::write(Value& avalue) { | |
| wcontext->write(avalue); | |
| } | |
| 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<WContext *>(POP()); | |
| rcontext=POP(); | |
| root=POP(); | |
| self=static_cast<VAliased *>(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; | |
| } |