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| version 1.47, 2001/02/25 17:35:49 | version 1.129, 2001/03/27 17:12:23 |
|---|---|
| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: executor part of request class. |
| 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_config_includes.h" |
| #include "code.h" | #include "code.h" |
| #include "pa_array.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" |
| Line 11 | Line 18 |
| #include "pa_vcframe.h" | #include "pa_vcframe.h" |
| #include "pa_vmframe.h" | #include "pa_vmframe.h" |
| #include "pa_vobject.h" | #include "pa_vobject.h" |
| #include "pa_vdouble.h" | |
| #include "pa_vbool.h" | |
| #include "pa_vtable.h" | |
| #include <stdio.h> | #include <stdio.h> |
| Line 20 | Line 30 |
| char *opcode_name[]={ | char *opcode_name[]={ |
| "STRING", "CODE", "CLASS", | // literals |
| "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", | "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", |
| "CONSTRUCT", | |
| "EXPRESSION_EVAL", "MODIFY_EVAL", | // actions |
| "WRITE", | "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE", |
| "GET_CLASS", | |
| "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE", | |
| "WRITE_VALUE", "WRITE_EXPR_RESULT", "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", |
| "CREATE_SWPOOL", "REDUCE_SWPOOL", | |
| "GET_METHOD_FRAME", | "GET_METHOD_FRAME", |
| "STORE_PARAM", | "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) { | void va_log_printf(Pool& pool, const char *fmt,va_list args) { |
| // return; | |
| char buf[MAX_STRING]; | |
| vsnprintf(buf, MAX_STRING, fmt, args); | |
| SAPI::log(pool, "%s", buf); | |
| } | |
| void log_printf(Pool& pool, const char *fmt, ...) { | |
| va_list args; | |
| va_start(args,fmt); | |
| va_log_printf(pool,fmt,args); | |
| va_end(args); | |
| } | |
| void dump(Pool& pool, int level, const Array& ops) { | |
| if(0){ | if(0){ |
| int size=ops.size(); | int size=ops.size(); |
| //fprintf(stderr, "size=%d\n", size); | //log_printf(pool, "size=%d\n", size); |
| 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, "%8X\n", op.cast); | log_printf(pool, "%8X\n", op.cast); |
| } | } |
| } | } |
| int size=ops.size(); | int size=ops.size(); |
| //fprintf(stderr, "size=%d\n", size); | //log_printf(pool, "size=%d\n", size); |
| 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, "%*s%s", level*4, "", opcode_name[op.code]); | log_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]); |
| if(op.code==OP_STRING) { | if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { |
| VString *vstring=static_cast<VString *>(ops.quick_get(++i)); | Value *value=static_cast<Value *>(ops.quick_get(++i)); |
| fprintf(stderr, " \"%s\"", vstring->get_string()->cstr()); | log_printf(pool, " \"%s\" %s", value->get_string()->cstr(), value->type()); |
| } | |
| if(op.code==OP_CLASS) { | |
| VClass *vclass=static_cast<VClass *>(ops.quick_get(++i)); | |
| fprintf(stderr, " \"%s\"", vclass->name().cstr()); | |
| } | } |
| fprintf(stderr, "\n"); | //\log_printf(pool, "\n"); |
| if(op.code==OP_CODE) { | if(op.code==OP_CURLY_CODE__STORE_PARAM || op.code==OP_EXPR_CODE__STORE_PARAM) { |
| const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); | const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); |
| dump(level+1, *local_ops); | dump(pool, level+1, *local_ops); |
| } | } |
| } | } |
| } | } |
| void Request::execute(const Array& ops) { | void Request::execute(const Array& ops) { |
| if(1) { | if(1) { |
| fputs("source----------------------------", stderr); | log_printf(pool(), "source----------------------------\n"); |
| dump(0, ops); | dump(pool(), 0, ops); |
| fputs("execution-------------------------", stderr); | log_printf(pool(), "execution-------------------------\n"); |
| } | } |
| int size=ops.size(); | int size=ops.size(); |
| //fprintf(stderr, "size=%d\n", size); | //log_printf(pool(), "size=%d\n", size); |
| 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(), opcode_name[op.code]); | log_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]); |
| switch(op.code) { | switch(op.code) { |
| // param in next instruction | // param in next instruction |
| case OP_STRING: | case OP_VALUE: |
| { | { |
| VString *vstring=static_cast<VString *>(ops.quick_get(++i)); | Value *value=static_cast<Value *>(ops.quick_get(++i)); |
| fprintf(stderr, " \"%s\"", vstring->get_string()->cstr()); | log_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type()); |
| PUSH(vstring); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_CODE: | case OP_CURLY_CODE__STORE_PARAM: |
| case OP_EXPR_CODE__STORE_PARAM: | |
| { | { |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); | |
| // 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()); | log_printf(pool(), " (%d)\n", local_ops->size()); |
| dump(1, *local_ops); | dump(pool(), 1, *local_ops); |
| // 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, zeroing junction.wcontext being created | |
| // later, in .process we would test that field | |
| // in decision "which wwrapper to use" | |
| Junction& j=*NEW Junction(pool(), | Junction& j=*NEW Junction(pool(), |
| *self, 0, 0, | *self, 0, 0, |
| root,rcontext,wcontext,local_ops); | root, frame, op.code==OP_EXPR_CODE__STORE_PARAM?0:frame, local_ops); |
| Value *value=NEW VJunction(j); | Value *value=NEW VJunction(j); |
| PUSH(value); | |
| // store param | |
| frame->store_param(frame->name(), value); | |
| break; | break; |
| } | } |
| case OP_CLASS: | case OP_GET_CLASS: |
| { | { |
| VClass *vclass=static_cast<VClass *>(ops.quick_get(++i)); | // maybe the do ^class:method[] call, remember the fact |
| fprintf(stderr, " \"%s\"", vclass->name().cstr()); | wcontext->set_somebody_entered_some_class(); |
| PUSH(vclass); | |
| const String& name=POP_NAME(); | |
| Value *value=static_cast<Value *>(classes().get(name)); | |
| if(!value) | |
| THROW(0,0, | |
| &name, | |
| ": undefined class"); | |
| PUSH(value); | |
| break; | break; |
| } | } |
| // OP_WITH | // OP_WITH |
| case OP_WITH_SELF: | case OP_WITH_SELF: |
| { | { |
| PUSH(self); | PUSH(self); |
| Line 134 void Request::execute(const Array& ops) | Line 189 void Request::execute(const Array& ops) |
| break; | break; |
| } | } |
| // ... | // 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->as_expr_result()); | |
| value->set_name(name); | |
| break; | |
| } | |
| case OP_WRITE_VALUE: | |
| { | |
| Value *value=POP(); | |
| write_assign_lang(*value); | |
| break; | break; |
| } | } |
| // TODO: OP_EXPRESSION_EVAL, OP_MODIFY_EVAL, | case OP_WRITE_EXPR_RESULT: |
| case OP_WRITE: | |
| { | { |
| Value *value=POP(); | Value *value=POP(); |
| wcontext->write(value); | write_expr_result(*value->as_expr_result()); |
| break; | |
| } | |
| case OP_STRING__WRITE: | |
| { | |
| VString *vstring=static_cast<VString *>(ops.quick_get(++i)); | |
| log_printf(pool(), " \"%s\"", vstring->string().cstr()); | |
| write_no_lang(vstring->string()); | |
| break; | break; |
| } | } |
| Line 162 void Request::execute(const Array& ops) | Line 238 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 192 void Request::execute(const Array& ops) | Line 268 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=NEW VString(*string); | 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); |
| break; | 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<WContext *>(POP()); | |
| PUSH(value); | |
| break; | |
| } | |
| // CALL | // CALL |
| case OP_GET_METHOD_FRAME: | case OP_GET_METHOD_FRAME: |
| { | { |
| Value *value=POP(); | Value *value=POP(); |
| // [self/class?;params;local;code/native_code](name) | // info: |
| // code compiled so that this one's always method-junction, | |
| // not a code-junction | |
| Junction *junction=value->get_junction(); | Junction *junction=value->get_junction(); |
| 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) not a method or junction, can not call it", |
| value->type()); | value->type()); |
| //unless(method) method=operators.get_method[...;code/native_code](name) | |
| VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); | VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); |
| 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; |
| } | } |
| case OP_CALL: | case OP_CALL: |
| { | { |
| fprintf(stderr, "->\n"); | log_printf(pool(), "->\n"); |
| VMethodFrame *frame=static_cast<VMethodFrame *>(POP()); | VMethodFrame *frame=static_cast<VMethodFrame *>(POP()); |
| frame->fill_unspecified_params(); | frame->fill_unspecified_params(); |
| PUSH(self); | PUSH(self); |
| Line 234 void Request::execute(const Array& ops) | Line 337 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 | // some stateless_object derivates with constructors |
| else // no | if(called_class==table_class) |
| self=&frame->junction.self; // static or simple dynamic call | self=NEW VTable(pool()); |
| } | else // stateful object |
| self=NEW VObject(pool(), *called_class); | |
| frame->write(*self, | |
| String::UL_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; |
| { | { |
| VAliased *aliased=reinterpret_cast<VAliased *>(self->get_aliased()); | // take object or class from any wrappers |
| Temp_alias temp_alias(*aliased, *frame->junction.vclass); | // and substitute class alias to the class they are called AS |
| execute(frame->junction.method->code); | 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->junction.self, | |
| 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(); | Value *value=wcontext->result(); |
| Line 261 void Request::execute(const Array& ops) | Line 382 void Request::execute(const Array& ops) |
| rcontext=POP(); | rcontext=POP(); |
| root=POP(); | root=POP(); |
| self=static_cast<VAliased *>(POP()); | self=static_cast<VAliased *>(POP()); |
| wcontext->write(value); | |
| fprintf(stderr, "<-returned"); | PUSH(value); |
| log_printf(pool(), "<-returned"); | |
| break; | |
| } | |
| // expression ops: unary | |
| case OP_NEG: | |
| { | |
| Value *operand=POP(); | |
| Value *value=NEW VDouble(pool(), -operand->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_INV: | |
| { | |
| Value *operand=POP(); | |
| Value *value=NEW VDouble(pool(), ~(int)operand->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NOT: | |
| { | |
| Value *operand=POP(); | |
| Value *value=NEW VBool(pool(), !operand->as_bool()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_DEF: | |
| { | |
| Value *operand=POP(); | |
| Value *value=NEW VBool(pool(), operand->is_defined()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_IN: | |
| { | |
| Value *operand=POP(); | |
| const char *path=operand->as_string().cstr(); | |
| Value *value=NEW VBool(pool(), info.uri && strcmp(path, info.uri)<=0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_FEXISTS: | |
| { | |
| Value *operand=POP(); | |
| Value *value=NEW VBool(pool(), | |
| file_readable(absolute(operand->as_string()))); | |
| PUSH(value); | |
| break; | |
| } | |
| // expression ops: binary | |
| case OP_SUB: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *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->as_double() + b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_MUL: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *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->as_double() / b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_MOD: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *value=NEW VDouble(pool(), | |
| (int)a->as_double() % | |
| (int)b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_BIN_AND: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *value=NEW VDouble(pool(), | |
| (int)a->as_double() & | |
| (int)b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_BIN_OR: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *value=NEW VDouble(pool(), | |
| (int)a->as_double() | | |
| (int)b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_BIN_XOR: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *value=NEW VDouble(pool(), | |
| (int)a->as_double() ^ | |
| (int)b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_LOG_AND: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_LOG_OR: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_LOG_XOR: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *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->as_double() < b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_GT: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *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->as_double() <= b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_GE: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *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->as_double() == b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_NE: | |
| { | |
| Value *b=POP(); Value *a=POP(); | |
| Value *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()); | |
| 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; | break; |
| } | } |
| default: | default: |
| fprintf(stderr, "\tTODO"); | THROW(0,0, |
| break; | 0, |
| "unhandled '%s' opcode", opcode_name[op.code]); | |
| } | } |
| fprintf(stderr, "\n"); | //\log_printf(pool(), "\n"); |
| } | } |
| } | } |
| 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); |
| if(value) { | if(value) |
| Junction *junction=value->get_junction(); | value=&process(*value, &name); // process possible code-junction |
| if(junction && junction->code) { // is it a code-junction? | else { |
| // autocalc it | value=NEW VUnknown(pool()); |
| fprintf(stderr, "ja->\n"); | value->set_name(name); |
| PUSH(self); | } |
| PUSH(root); | |
| PUSH(rcontext); | return value; |
| PUSH(wcontext); | } |
| /** | |
| 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& Request::process(Value& value, const String *name, bool intercept_string) { | |
| Value *result; | |
| Junction *junction=value.get_junction(); | |
| if(junction && junction->code) { // is it a code-junction? | |
| // process it | |
| log_printf(pool(), "ja->\n"); | |
| PUSH(self); | |
| PUSH(root); | |
| PUSH(rcontext); | |
| PUSH(wcontext); | |
| WContext *frame; | |
| // 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; | frame=NEW VCodeFrame(pool(), *junction->wcontext); |
| self=&junction->self; | } else { |
| root=junction->root; | // plain wwrapper |
| rcontext=junction->rcontext; | frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/); |
| execute(*junction->code); | } |
| wcontext=frame; | |
| self=&junction->self; | |
| root=junction->root; | |
| rcontext=junction->rcontext; | |
| execute(*junction->code); | |
| if(using_code_frame) { | |
| // 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=NEW VString(*frame->get_string()); |
| } else | |
| result=frame->result(); | |
| wcontext=static_cast<WContext *>(POP()); | |
| rcontext=POP(); | |
| root=POP(); | |
| self=static_cast<VAliased *>(POP()); | |
| log_printf(pool(), "<-ja returned"); | |
| } else | |
| result=&value; | |
| if(name) | |
| result->set_name(*name); | |
| return *result; | |
| } | |
| wcontext=static_cast<WContext *>(POP()); | const String *Request::execute_method(Value& aself, const Method& method, bool return_cstr) { |
| rcontext=POP(); | PUSH(self); |
| root=POP(); | PUSH(root); |
| self=static_cast<VAliased *>(POP()); | PUSH(rcontext); |
| fprintf(stderr, "<-ja returned"); | PUSH(wcontext); |
| } | |
| } else { | // initialize contexts |
| value=NEW VUnknown(pool()); | root=rcontext=self=&aself; |
| value->set_name(name); | wcontext=NEW WWrapper(pool(), &aself, false /* not constructing */); |
| } | |
| return value; | // execute! |
| execute(*method.parser_code); | |
| // result | |
| const String *result; | |
| if(return_cstr) | |
| result=&wcontext->as_string(); | |
| else | |
| result=0; // ignore result | |
| wcontext=static_cast<WContext *>(POP()); | |
| rcontext=POP(); | |
| root=POP(); | |
| self=static_cast<VAliased *>(POP()); | |
| // return | |
| return result; | |
| } | |
| const String *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; | |
| } | } |