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| version 1.136, 2001/04/03 05:23:41 | version 1.271, 2002/09/17 16:00:46 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: executor part of request class. | Parser: executor part of request class. |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | |
| */ | */ |
| #include "pa_config_includes.h" | static const char* IDENT_EXECUTE_C="$Date$"; |
| #include "code.h" | |
| #include "pa_opcode.h" | |
| #include "pa_array.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" |
| #include "pa_vunknown.h" | #include "pa_vvoid.h" |
| #include "pa_vcframe.h" | #include "pa_vcode_frame.h" |
| #include "pa_vmframe.h" | #include "pa_vmethod_frame.h" |
| #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 "pa_vtable.h" |
| #include "pa_vfile.h" | #include "pa_vfile.h" |
| #include "pa_vimage.h" | |
| #include "pa_wwrapper.h" | |
| #include <stdio.h> | //#define DEBUG_EXECUTE |
| //#define DEBUG_STRING_APPENDS_VS_EXPANDS | |
| #define PUSH(value) stack.push(value) | |
| #define POP() static_cast<Value *>(stack.pop()) | #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS |
| #define POP_NAME() static_cast<Value *>(stack.pop())->as_string() | ulong wcontext_result_size=0; |
| #endif | |
| #ifdef DEBUG_EXECUTE | |
| char *opcode_name[]={ | char *opcode_name[]={ |
| // literals | // literals |
| "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", | "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", |
| "NESTED_CODE", | |
| // actions | // actions |
| "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE", | "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", |
| "GET_CLASS", | "GET_CLASS", |
| "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE", | "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", |
| "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", | "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", |
| "GET_ELEMENT", "GET_ELEMENT__WRITE", | "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE", |
| "CREATE_EWPOOL", "REDUCE_EWPOOL", | "OBJECT_POOL", "STRING_POOL", |
| "CREATE_RWPOOL", "REDUCE_RWPOOL", | |
| "CREATE_SWPOOL", "REDUCE_SWPOOL", | |
| "GET_METHOD_FRAME", | |
| "STORE_PARAM", | "STORE_PARAM", |
| "CALL", | "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION", |
| "CALL", "CALL__WRITE", | |
| // expression ops: unary | // expression ops: unary |
| "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", | "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS", |
| // expression ops: binary | // expression ops: binary |
| "SUB", "ADD", "MUL", "DIV", "MOD", | "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV", |
| "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", |
| Line 58 char *opcode_name[]={ | Line 61 char *opcode_name[]={ |
| "IS" | "IS" |
| }; | }; |
| void va_log_printf(Pool& pool, const char *fmt,va_list args) { | void va_debug_printf(Pool& pool, const char *fmt,va_list args) { |
| return; | |
| char buf[MAX_STRING]; | char buf[MAX_STRING]; |
| vsnprintf(buf, MAX_STRING, fmt, args); | vsnprintf(buf, MAX_STRING, fmt, args); |
| SAPI::log(pool, "%s", buf); | 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_list args; |
| va_start(args,fmt); | va_start(args,fmt); |
| va_log_printf(pool,fmt,args); | va_debug_printf(pool,fmt,args); |
| va_end(args); | va_end(args); |
| } | } |
| void dump(Pool& pool, int level, const Array& ops) { | void debug_dump(Pool& pool, int level, const Array& ops) { |
| if(0){ | Array_iter i(ops); |
| int size=ops.quick_size(); | while(i.has_next()) { |
| //log_printf(pool, "size=%d\n", size); | |
| for(int i=0; i<size; i++) { | |
| Operation op; | |
| op.cast=ops.quick_get(i); | |
| log_printf(pool, "%8X\n", op.cast); | |
| } | |
| } | |
| int size=ops.quick_size(); | |
| //log_printf(pool, "size=%d\n", size); | |
| for(int i=0; i<size; i++) { | |
| Operation op; | Operation op; |
| op.cast=ops.quick_get(i); | op.cast=i.next(); |
| if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { | if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { |
| Value *value=static_cast<Value *>(ops.quick_get(++i)); | Value *value=static_cast<Value *>(i.next()); |
| log_printf(pool, | debug_printf(pool, |
| "%*s%s" | "%*s%s" |
| " \"%s\" %s", | " \"%s\" %s", |
| level*4, "", opcode_name[op.code], | level*4, "", opcode_name[op.code], |
| value->get_string()->cstr(), value->type()); | value->get_string()->cstr(), value->type()); |
| continue; | 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) { | switch(op.code) { |
| const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i)); | case OP_CURLY_CODE__STORE_PARAM: |
| dump(pool, level+1, *local_ops); | case OP_EXPR_CODE__STORE_PARAM: |
| case OP_CURLY_CODE__CONSTRUCT: | |
| case OP_NESTED_CODE: | |
| case OP_OBJECT_POOL: | |
| case OP_STRING_POOL: | |
| case OP_CALL: | |
| const Array *local_ops=reinterpret_cast<const Array *>(i.next()); | |
| debug_dump(pool, level+1, *local_ops); | |
| } | } |
| } | } |
| } | } |
| #endif | |
| #define PUSH(value) stack.push(value) | |
| #define POP() static_cast<Value *>(stack.pop()) | |
| #define POP_NAME() static_cast<Value *>(stack.pop())->as_string() | |
| #define POP_CODE() static_cast<Array *>(stack.pop()) | |
| void Request::execute(const Array& ops) { | void Request::execute(const Array& ops) { |
| if(1) { | // _asm int 3; |
| log_printf(pool(), "source----------------------------\n"); | #ifdef DEBUG_EXECUTE |
| dump(pool(), 0, ops); | debug_printf(pool(), "source----------------------------\n"); |
| log_printf(pool(), "execution-------------------------\n"); | debug_dump(pool(), 0, ops); |
| } | debug_printf(pool(), "execution-------------------------\n"); |
| #endif | |
| const String *last_get_element_name=0; | |
| int size=ops.quick_size(); | Array_iter i(ops); |
| //log_printf(pool(), "size=%d\n", size); | while(i.has_next()) { |
| for(int i=0; i<size; i++) { | |
| Operation op; | Operation op; |
| op.cast=ops.quick_get(i); | op.cast=i.next(); |
| log_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]); | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]); | |
| #endif | |
| Value *value; | |
| Value *a; Value *b; | |
| Array *b_code; | |
| switch(op.code) { | switch(op.code) { |
| // param in next instruction | // param in next instruction |
| case OP_VALUE: | case OP_VALUE: |
| { | { |
| Value *value=static_cast<Value *>(ops.quick_get(++i)); | value=static_cast<Value *>(i.next()); |
| 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); | PUSH(value); |
| break; | break; |
| } | } |
| 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)); | |
| log_printf(pool(), " (%d)\n", local_ops->size()); | |
| dump(pool(), 1, *local_ops); | |
| // when called method of some object, specifying object literally, | |
| // e.g ^t.menu, code of curly params must be executed | |
| // in r/w context of that object. | |
| // otherwise in current r/w context. | |
| // | |
| // 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(), | |
| *self, 0, 0, | |
| root, | |
| wcontext->somebody_entered_some_object()>1? | |
| &frame->junction.self /* ^t.menu{} */:rcontext/* ^if() */, | |
| op.code==OP_EXPR_CODE__STORE_PARAM? | |
| 0:wcontext->somebody_entered_some_object()>1? | |
| frame/* ^t.menu{} */:wcontext/* ^if() */, | |
| local_ops); | |
| Value *value=NEW VJunction(j); | |
| // store param | |
| frame->store_param(frame->name(), value); | |
| break; | |
| } | |
| case OP_GET_CLASS: | case OP_GET_CLASS: |
| { | { |
| // maybe they do ^class:method[] call, remember the fact | // maybe they do ^class:method[] call, remember the fact |
| wcontext->set_somebody_entered_some_class(); | wcontext->set_somebody_entered_some_class(); |
| const String& name=POP_NAME(); | const String& name=POP_NAME(); |
| Value *value=static_cast<Value *>(classes().get(name)); | value=static_cast<Value *>(classes().get(name)); |
| if(!value) | if(!value) |
| THROW(0,0, | throw Exception("parser.runtime", |
| &name, | &name, |
| ": undefined class"); | "class is undefined"); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| // OP_WITH | // OP_WITH |
| case OP_WITH_SELF: | case OP_WITH_ROOT: |
| { | { |
| PUSH(self); | PUSH(method_frame); |
| break; | break; |
| } | } |
| case OP_WITH_ROOT: | case OP_WITH_SELF: |
| { | { |
| PUSH(root); | if(!self) |
| throw Exception("parser.runtime", | |
| 0, | |
| "you do not have 'self' here, use local variables"); | |
| PUSH(self); | |
| break; | break; |
| } | } |
| case OP_WITH_READ: | case OP_WITH_READ: |
| Line 208 void Request::execute(const Array& ops) | Line 187 void Request::execute(const Array& ops) |
| // OTHER ACTIONS BUT WITHs | // OTHER ACTIONS BUT WITHs |
| case OP_CONSTRUCT_VALUE: | case OP_CONSTRUCT_VALUE: |
| { | { |
| Value *value=POP(); | value=POP(); |
| const String& name=POP_NAME(); | const String& name=POP_NAME(); |
| Value *ncontext=POP(); | Value *ncontext=POP(); |
| ncontext->put_element(name, value); | ncontext->put_element(name, value, false); |
| value->set_name(name); | |
| break; | break; |
| } | } |
| case OP_CONSTRUCT_EXPR: | 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->as_expr_result(), false); | |
| break; | |
| } | |
| case OP_CURLY_CODE__CONSTRUCT: | |
| { | |
| const Array *local_ops=reinterpret_cast<const Array *>(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, | |
| method_frame, | |
| rcontext, | |
| wcontext, | |
| local_ops); | |
| value=NEW VJunction(j); | |
| const String& name=POP_NAME(); | const String& name=POP_NAME(); |
| Value *ncontext=POP(); | Value *ncontext=POP(); |
| ncontext->put_element(name, value->as_expr_result()); | ncontext->put_element(name, value, false); |
| value->set_name(name); | break; |
| } | |
| case OP_NESTED_CODE: | |
| { | |
| Array *local_ops=static_cast<Array *>(i.next()); | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), " (%d)\n", local_ops->size()); | |
| debug_dump(pool(), 1, *local_ops); | |
| #endif | |
| PUSH(local_ops); | |
| break; | break; |
| } | } |
| case OP_WRITE_VALUE: | case OP_WRITE_VALUE: |
| { | { |
| Value *value=POP(); | value=POP(); |
| write_assign_lang(*value); | write_assign_lang(*value, last_get_element_name); |
| break; | break; |
| } | } |
| case OP_WRITE_EXPR_RESULT: | case OP_WRITE_EXPR_RESULT: |
| { | { |
| Value *value=POP(); | value=POP(); |
| write_expr_result(*value->as_expr_result()); | write_no_lang(*value->as_expr_result()); |
| // must be after write(result) and | |
| // see OP_PREPARE_TO_EXPRESSION | |
| wcontext->set_in_expression(false); | |
| break; | break; |
| } | } |
| case OP_STRING__WRITE: | case OP_STRING__WRITE: |
| { | { |
| VString *vstring=static_cast<VString *>(ops.quick_get(++i)); | VString *vstring=static_cast<VString *>(i.next()); |
| log_printf(pool(), " \"%s\"", vstring->string().cstr()); | #ifdef DEBUG_EXECUTE |
| debug_printf(pool(), " \"%s\"", vstring->string().cstr()); | |
| #endif | |
| write_no_lang(vstring->string()); | write_no_lang(vstring->string()); |
| break; | break; |
| } | } |
| case OP_GET_ELEMENT_OR_OPERATOR: | |
| { | |
| //_asm int 3; | |
| value=get_element(last_get_element_name, true); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_GET_ELEMENT: | case OP_GET_ELEMENT: |
| { | { |
| // maybe they do ^object.method[] call, remember the fact | //_asm int 3; |
| wcontext->inc_somebody_entered_some_object(); | value=get_element(last_get_element_name, false); |
| Value *value=get_element(); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_GET_ELEMENT__WRITE: | case OP_GET_ELEMENT__WRITE: |
| { | { |
| Value *value=get_element(); | value=get_element(last_get_element_name/*not followed by call, not needed really*/, false); |
| write_assign_lang(*value); | write_assign_lang(*value, last_get_element_name); |
| break; | break; |
| } | } |
| case OP_CREATE_EWPOOL: | case OP_OBJECT_POOL: |
| { | { |
| PUSH(wcontext); | const Array *local_ops=reinterpret_cast<const Array *>(i.next()); |
| wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */); | |
| break; | WContext *saved_wcontext=wcontext; |
| } | uchar saved_lang= flang; |
| case OP_REDUCE_EWPOOL: | flang=String::UL_PASS_APPENDED; |
| { | WWrapper local(pool(), 0 /*empty*/, wcontext); |
| Value *value=wcontext->result(); | wcontext=&local; |
| wcontext=static_cast<WContext *>(POP()); | |
| execute(*local_ops); | |
| value=&wcontext->result().as_value(); | |
| flang=saved_lang; | |
| wcontext=saved_wcontext; | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_CREATE_RWPOOL: | case OP_STRING_POOL: |
| { | |
| Value *ncontext=POP(); | |
| PUSH(rcontext); | |
| rcontext=ncontext; | |
| PUSH(wcontext); | |
| wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */); | |
| break; | |
| } | |
| case OP_REDUCE_RWPOOL: | |
| { | { |
| const Array *local_ops=reinterpret_cast<const Array *>(i.next()); | |
| WContext *saved_wcontext=wcontext; | |
| WWrapper local(pool(), 0 /*empty*/, wcontext); | |
| wcontext=&local; | |
| execute(*local_ops); | |
| // from "$a $b" part of expression taking only string value, | |
| // ignoring any other content of wcontext | |
| const String *string=wcontext->get_string(); | const String *string=wcontext->get_string(); |
| Value *value; | Value *value; |
| if(string) | if(string) |
| value=NEW VString(*string); | value=NEW VString(*string); |
| else | else |
| value=NEW VUnknown(pool()); | NEW VVoid(pool()); |
| wcontext=static_cast<WContext *>(POP()); | wcontext=saved_wcontext; |
| rcontext=POP(); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_CREATE_SWPOOL: | |
| // CALL | |
| case OP_STORE_PARAM: | |
| { | { |
| PUSH(wcontext); | value=POP(); |
| wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */); | VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); |
| // this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0 | |
| frame->store_param(value); | |
| break; | break; |
| } | } |
| case OP_REDUCE_SWPOOL: | case OP_CURLY_CODE__STORE_PARAM: |
| case OP_EXPR_CODE__STORE_PARAM: | |
| { | { |
| // from "$a $b" part of expression taking only string value, | // code |
| // ignoring any other content of wcontext | const Array *local_ops=reinterpret_cast<const Array *>(i.next()); |
| const String *string=wcontext->get_string(); | VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); |
| Value *value; | #ifdef DEBUG_EXECUTE |
| if(string) | debug_printf(pool(), " (%d)\n", local_ops->size()); |
| value=NEW VString(*string); | debug_dump(pool(), 1, *local_ops); |
| else | #endif |
| NEW VUnknown(pool()); | // when they evaluate expression parameter, |
| wcontext=static_cast<WContext *>(POP()); | // the object expression result |
| PUSH(value); | // 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, | |
| method_frame, | |
| rcontext, | |
| op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext, | |
| local_ops); | |
| value=NEW VJunction(j); | |
| // store param | |
| // this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0 | |
| frame->store_param(value); | |
| break; | break; |
| } | } |
| // CALL | case OP_PREPARE_TO_CONSTRUCT_OBJECT: |
| case OP_GET_METHOD_FRAME: | |
| { | { |
| Value *value=POP(); | wcontext->set_constructing(true); |
| // 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, | |
| &value->name(), | |
| "(%s) not a method or junction, can not call it", | |
| value->type()); | |
| VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); | |
| frame->set_name(value->name()); | |
| PUSH(frame); | |
| break; | break; |
| } | } |
| case OP_STORE_PARAM: | |
| case OP_PREPARE_TO_EXPRESSION: | |
| { | { |
| Value *value=POP(); | wcontext->set_in_expression(true); |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); | |
| frame->store_param(frame->name(), value); | |
| break; | break; |
| } | } |
| case OP_CALL: | case OP_CALL: |
| case OP_CALL__WRITE: | |
| { | { |
| log_printf(pool(), "->\n"); | Array *local_ops=static_cast<Array *>(i.next()); |
| VMethodFrame *frame=static_cast<VMethodFrame *>(POP()); | #ifdef DEBUG_EXECUTE |
| frame->fill_unspecified_params(); | debug_printf(pool(), " (%d)\n", local_ops->size()); |
| PUSH(self); | debug_dump(pool(), 1, *local_ops); |
| PUSH(root); | |
| PUSH(rcontext); | debug_printf(pool(), "->\n"); |
| PUSH(wcontext); | #endif |
| 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 Exception("parser.runtime", | |
| last_get_element_name, | |
| "(%s) not a method or junction, can not call it", | |
| value->type()); | |
| VMethodFrame frame(pool(), *last_get_element_name, *junction); | |
| if(local_ops){ // store param code goes here | |
| PUSH(&frame); // argument for *STORE_PARAM ops | |
| execute(*local_ops); | |
| POP(); | |
| } | |
| frame.fill_unspecified_params(); | |
| Value *saved_self=self; | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value *saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| VStateless_class *called_class=frame->junction.self.get_class(); | VStateless_class *called_class=frame.junction.self?frame.junction.self->get_class():0; |
| // is context object or class & is it my class or my parent's class? | if(wcontext->get_constructing()) { |
| VStateless_class *read_class=rcontext->get_class(); | wcontext->set_constructing(false); |
| if(read_class && read_class->is_or_derived_from(*called_class)) // yes | if(frame.junction.method->call_type!=Method::CT_STATIC) { |
| self=rcontext; // class dynamic call | // this is a constructor call |
| else // no, not me or relative of mine (total stranger) | |
| if( | if(Value *value=called_class->create_new_value(pool())) { |
| wcontext->constructing() && // constructing? | // some stateless_class creatable derivates |
| wcontext->somebody_entered_some_class()) { // ^class:method[..]? | self=value; |
| // yes, this is a constructor call | } else |
| // some stateless_object derivates with constructors | throw Exception("parser.runtime", |
| if(called_class==table_class) | &frame.name(), |
| self=NEW VTable(pool()); | "is not a constructor, system class '%s' can be constructed only implicitly", |
| else if(called_class==file_class) | called_class->name().cstr()); |
| self=NEW VFile(pool()); | |
| else // stateful object | frame.write(*self, |
| self=NEW VObject(pool(), *called_class); | |
| frame->write(*self, | |
| String::UL_CLEAN // not used, always an object, not string | String::UL_CLEAN // not used, always an object, not string |
| ); | ); |
| } else | } else |
| self=&frame->junction.self; // no, static or simple dynamic call | throw Exception("parser.runtime", |
| &frame.name(), | |
| "method is static and can not be used as constructor"); | |
| } else | |
| self=frame.junction.self; | |
| frame->set_self(*self); | frame.set_self(self); |
| root=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; | // see OP_PREPARE_TO_EXPRESSION |
| frame.set_in_expression(wcontext->get_in_expression()); | |
| rcontext=wcontext=&frame; | |
| { | |
| const Method& method=*frame.junction.method; | |
| Method::Call_type call_type= | Method::Call_type call_type= |
| called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC; | called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC; |
| if( | if( |
| method.call_type==Method::CT_ANY || | method.call_type==Method::CT_ANY || |
| method.call_type==call_type) // allowed call type? | method.call_type==call_type) { // allowed call type? |
| if(method.native_code) { // native code? | try { |
| method.check_actual_numbered_params( | if(method.native_code) { // native code? |
| frame->junction.self, | // method_frame unchanged, so that ^for ^foreach & co may write to locals |
| frame->name(), frame->numbered_params()); | method.check_actual_numbered_params( |
| (*method.native_code)( | frame.junction.self, |
| *this, | frame.name(), frame.numbered_params()); |
| frame->name(), frame->numbered_params()); // execute it | method.native_code( |
| } else // parser code | *this, |
| execute(*method.parser_code); // execute it | frame.name(), frame.numbered_params()); // execute it |
| else | } else { // parser code |
| THROW(0, 0, | method_frame=&frame; |
| &frame->name(), | // execute it |
| recoursion_checked_execute(&frame.name(), *method.parser_code); | |
| } | |
| } 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", | "is not allowed to be called %s", |
| call_type==Method::CT_STATIC?"statically":"dynamically"); | call_type==Method::CT_STATIC?"statically":"dynamically"); |
| } | } |
| Value *value=wcontext->result(); | StringOrValue result=wcontext->result(); |
| wcontext=static_cast<WContext *>(POP()); | |
| rcontext=POP(); | |
| root=POP(); | |
| self=static_cast<VAliased *>(POP()); | |
| PUSH(value); | wcontext=saved_wcontext; |
| log_printf(pool(), "<-returned"); | rcontext=saved_rcontext; |
| method_frame=saved_method_frame; | |
| self=saved_self; | |
| #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS | |
| if(const String *s=value->get_string()) | |
| wcontext_result_size+=s->used_rows()*sizeof(String::Chunk::Row); | |
| #endif | |
| if(op.code==OP_CALL__WRITE) { | |
| write_assign_lang(result, last_get_element_name); | |
| } else { // OP_CALL | |
| PUSH(&result.as_value()); | |
| } | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), "<-returned"); | |
| #endif | |
| break; | break; |
| } | } |
| Line 424 void Request::execute(const Array& ops) | Line 504 void Request::execute(const Array& ops) |
| case OP_NEG: | case OP_NEG: |
| { | { |
| Value *operand=POP(); | Value *operand=POP(); |
| Value *value=NEW VDouble(pool(), -operand->as_double()); | value=NEW VDouble(pool(), -operand->as_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_INV: | case OP_INV: |
| { | { |
| Value *operand=POP(); | Value *operand=POP(); |
| Value *value=NEW VDouble(pool(), ~(int)operand->as_double()); | value=NEW VDouble(pool(), ~operand->as_int()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_NOT: | case OP_NOT: |
| { | { |
| Value *operand=POP(); | Value *operand=POP(); |
| Value *value=NEW VBool(pool(), !operand->as_bool()); | value=NEW VBool(pool(), !operand->as_bool()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_DEF: | case OP_DEF: |
| { | { |
| Value *operand=POP(); | Value *operand=POP(); |
| Value *value=NEW VBool(pool(), operand->is_defined()); | value=NEW VBool(pool(), operand->is_defined()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_IN: | case OP_IN: |
| { | { |
| /// @test String::cmp | |
| Value *operand=POP(); | Value *operand=POP(); |
| const char *path=operand->as_string().cstr(); | const char *path=operand->as_string().cstr(); |
| Value *value=NEW VBool(pool(), info.uri && strcmp(path, info.uri)<=0); | value=NEW VBool(pool(), |
| info.uri && strncmp(path, info.uri, strlen(path))==0); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_FEXISTS: | case OP_FEXISTS: |
| { | { |
| Value *operand=POP(); | Value *operand=POP(); |
| Value *value=NEW VBool(pool(), | value=NEW VBool(pool(), |
| file_readable(absolute(operand->as_string()))); | file_readable(absolute(operand->as_string()))); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_DEXISTS: | |
| { | |
| Value *operand=POP(); | |
| value=NEW VBool(pool(), | |
| dir_readable(absolute(operand->as_string()))); | |
| PUSH(value); | |
| break; | |
| } | |
| // expression ops: binary | // expression ops: binary |
| case OP_SUB: | case OP_SUB: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), a->as_double() - b->as_double()); | value=NEW VDouble(pool(), a->as_double() - b->as_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_ADD: | case OP_ADD: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), a->as_double() + b->as_double()); | value=NEW VDouble(pool(), a->as_double() + b->as_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_MUL: | case OP_MUL: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), a->as_double() * b->as_double()); | value=NEW VDouble(pool(), a->as_double() * b->as_double()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_DIV: | case OP_DIV: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), a->as_double() / b->as_double()); | |
| double a_double=a->as_double(); | |
| double b_double=b->as_double(); | |
| if(b_double == 0) { | |
| const String *problem_source=&b->as_string(); | |
| throw Exception("number.zerodivision", | |
| problem_source, | |
| "Division by zero"); | |
| } | |
| value=NEW VDouble(pool(), a_double / b_double); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_MOD: | case OP_MOD: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), | |
| (int)a->as_double() % | double a_double=a->as_double(); |
| (int)b->as_double()); | double b_double=b->as_double(); |
| if(b_double == 0) { | |
| const String *problem_source=&b->as_string(); | |
| 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(); | |
| throw Exception("number.zerodivision", | |
| problem_source, | |
| "Division by zero"); | |
| } | |
| value=NEW VInt(pool(), a_int / b_int); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_BIN_AND: | case OP_BIN_AND: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), | value=NEW VDouble(pool(), |
| (int)a->as_double() & | a->as_int() & |
| (int)b->as_double()); | b->as_int()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_BIN_OR: | case OP_BIN_OR: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), | value=NEW VDouble(pool(), |
| (int)a->as_double() | | a->as_int() | |
| (int)b->as_double()); | b->as_int()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_BIN_XOR: | case OP_BIN_XOR: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VDouble(pool(), | value=NEW VDouble(pool(), |
| (int)a->as_double() ^ | a->as_int() ^ |
| (int)b->as_double()); | b->as_int()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_LOG_AND: | case OP_LOG_AND: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b_code=POP_CODE(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool()); | 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); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_LOG_OR: | case OP_LOG_OR: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b_code=POP_CODE(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool()); | 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); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_LOG_XOR: | case OP_LOG_XOR: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool()); | value=NEW VBool(pool(), a->as_bool() ^ b->as_bool()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_NUM_LT: | case OP_NUM_LT: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_double() < b->as_double()); | double result=a->as_double() - b->as_double(); |
| value=NEW VBool(pool(), result < 0.0); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_NUM_GT: | case OP_NUM_GT: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_double() > b->as_double()); | double result=a->as_double() - b->as_double(); |
| value=NEW VBool(pool(), result > 0.0); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_NUM_LE: | case OP_NUM_LE: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_double() <= b->as_double()); | double result=a->as_double() - b->as_double(); |
| value=NEW VBool(pool(), result <= 0.0); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_NUM_GE: | case OP_NUM_GE: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_double() >= b->as_double()); | double result=a->as_double() - b->as_double(); |
| value=NEW VBool(pool(), result >= 0.0); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_NUM_EQ: | case OP_NUM_EQ: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_double() == b->as_double()); | double result=a->as_double() - b->as_double(); |
| value=NEW VBool(pool(), result == 0.0); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_NUM_NE: | case OP_NUM_NE: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_double() != b->as_double()); | double result=a->as_double() - b->as_double(); |
| value=NEW VBool(pool(), result != 0.0); | |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_STR_LT: | case OP_STR_LT: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_string() < b->as_string()); | value=NEW VBool(pool(), a->as_string() < b->as_string()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_STR_GT: | case OP_STR_GT: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_string() > b->as_string()); | value=NEW VBool(pool(), a->as_string() > b->as_string()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_STR_LE: | case OP_STR_LE: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_string() <= b->as_string()); | value=NEW VBool(pool(), a->as_string() <= b->as_string()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_STR_GE: | case OP_STR_GE: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_string() >= b->as_string()); | value=NEW VBool(pool(), a->as_string() >= b->as_string()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_STR_EQ: | case OP_STR_EQ: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_string() == b->as_string()); | value=NEW VBool(pool(), a->as_string() == b->as_string()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_STR_NE: | case OP_STR_NE: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), a->as_string() != b->as_string()); | value=NEW VBool(pool(), a->as_string() != b->as_string()); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| case OP_IS: | case OP_IS: |
| { | { |
| Value *b=POP(); Value *a=POP(); | b=POP(); a=POP(); |
| Value *value=NEW VBool(pool(), b->as_string() == a->type()); | value=NEW VBool(pool(), a->is(b->as_string().cstr())); |
| PUSH(value); | PUSH(value); |
| break; | break; |
| } | } |
| default: | default: |
| THROW(0,0, | throw Exception(0, |
| 0, | 0, |
| "unhandled '%s' opcode", opcode_name[op.code]); | "invalid opcode %d", op.code); |
| } | } |
| } | } |
| } | } |
| Value *Request::get_element() { | /// @test cache|prepare junctions |
| const String& name=POP_NAME(); | Value *Request::get_element(const String *& remember_name, bool can_call_operator) { |
| const String& name=POP_NAME(); remember_name=&name; | |
| Value *ncontext=POP(); | 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(), | |
| method->native_code?method_frame/*for ^process*/:0, method, 0,0,0,0); | |
| value=NEW VJunction(junction); | |
| } | |
| } | |
| if(!value) { | |
| if(!wcontext->get_constructing() // not constructing | |
| && wcontext->get_somebody_entered_some_class() ) // ^class:method | |
| if(VStateless_class *called_class=ncontext->get_class()) | |
| if(VStateless_class *read_class=rcontext->get_class()) | |
| if(read_class->derived_from(*called_class)) // current derived from called | |
| if(Value *base_object=self->base_object()) { // doing DYNAMIC call | |
| Temp_derived temp_derived(*base_object, 0); // temporarily prevent go-back-down virtual calls | |
| value=base_object->get_element(name, base_object, false); // virtual-up lookup starting from parent | |
| goto _void; | |
| } | |
| } | |
| if(!value) | |
| value=ncontext->get_element(name, ncontext, false); | |
| _void: | |
| if(value) | if(value) |
| value=&process(*value, &name); // process possible code-junction | value=&process_to_value(*value); // process possible code-junction |
| else { | else |
| value=NEW VUnknown(pool()); | value=NEW VVoid(pool()); |
| value->set_name(name); | |
| } | |
| return value; | return value; |
| } | } |
| /** | /** @param intercept_string |
| intercept_string: | |
| - true: | - true: |
| they want result=string value, | they want result=string value, |
| possible object result goes to wcontext | possible object result goes to wcontext |
| Line 676 Value *Request::get_element() { | Line 846 Value *Request::get_element() { |
| they want any result[string|object] | they want any result[string|object] |
| nothing goes to wcontext. | nothing goes to wcontext. |
| used in @c (expression) params evaluation | used in @c (expression) params evaluation |
| using the fact it's either string_ or value_ result requested to speed up checkes | |
| */ | */ |
| Value& Request::process(Value& value, const String *name, bool intercept_string) { | StringOrValue Request::process(Value& input_value, bool intercept_string) { |
| Value *result; | StringOrValue result; |
| Junction *junction=value.get_junction(); | Junction *junction=input_value.get_junction(); |
| if(junction && junction->code) { // is it a code-junction? | if(junction && junction->code) { // is it a code-junction? |
| // process it | // process it |
| log_printf(pool(), "ja->\n"); | #ifdef DEBUG_EXECUTE |
| PUSH(self); | debug_printf(pool(), "ja->\n"); |
| PUSH(root); | #endif |
| PUSH(rcontext); | |
| PUSH(wcontext); | if(!junction->method_frame) |
| throw Exception("parser.runtime", | |
| 0, | |
| "junction used outside of context"); | |
| Value *saved_self=self; | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value *saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| WContext *frame; | self=junction->self; |
| method_frame=junction->method_frame; | |
| rcontext=junction->rcontext; | |
| // for expression method params | // for expression method params |
| // wcontext is set 0 | // wcontext is set 0 |
| // using the fact in decision "which wwrapper to use" | // using the fact in decision "which wwrapper to use" |
| Line 696 Value& Request::process(Value& value, co | Line 879 Value& Request::process(Value& value, co |
| if(using_code_frame) { | if(using_code_frame) { |
| // almost plain wwrapper about junction wcontext, | // almost plain wwrapper about junction wcontext, |
| // BUT intercepts string writes | // BUT intercepts string writes |
| frame=NEW VCodeFrame(pool(), *junction->wcontext); | VCodeFrame local(pool(), *junction->wcontext, junction->wcontext); |
| } else { | wcontext=&local; |
| // plain wwrapper | |
| frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/); | // execute it |
| } | recoursion_checked_execute(0/*result_name*/, *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 |
| result=NEW VString(*frame->get_string()); | result.set_string(*wcontext->get_string()); |
| } else | } else { |
| result=frame->result(); | // plain wwrapper |
| WWrapper local(pool(), 0/*empty*/, wcontext); | |
| wcontext=&local; | |
| wcontext=static_cast<WContext *>(POP()); | // execute it |
| rcontext=POP(); | recoursion_checked_execute(0/*result_name*/, *junction->code); |
| root=POP(); | |
| self=static_cast<VAliased *>(POP()); | |
| log_printf(pool(), "<-ja returned"); | result=wcontext->result(); |
| } else | } |
| result=&value; | |
| wcontext=saved_wcontext; | |
| if(name) | rcontext=saved_rcontext; |
| result->set_name(*name); | method_frame=saved_method_frame; |
| return *result; | self=saved_self; |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), "<-ja returned"); | |
| #endif | |
| } else { | |
| result.set_value(input_value); | |
| } | |
| return result; | |
| } | } |
| const String *Request::execute_method(Value& aself, const Method& method, bool return_cstr) { | const String& Request::execute_method(VMethodFrame& amethod_frame, const Method& method) { |
| PUSH(self); | Value *saved_self=self; |
| PUSH(root); | VMethodFrame *saved_method_frame=method_frame; |
| PUSH(rcontext); | Value *saved_rcontext=rcontext; |
| PUSH(wcontext); | WContext *saved_wcontext=wcontext; |
| // initialize contexts | // initialize contexts |
| root=rcontext=self=&aself; | self=rcontext=wcontext=method_frame=&amethod_frame; |
| wcontext=NEW WWrapper(pool(), &aself, false /* not constructing */); | |
| // execute! | // execute! |
| execute(*method.parser_code); | execute(*method.parser_code); |
| // result | // result |
| const String *result; | const String& result=wcontext->result().as_string(); |
| if(return_cstr) | |
| result=&wcontext->as_string(); | |
| else | |
| result=0; // ignore result | |
| wcontext=static_cast<WContext *>(POP()); | wcontext=saved_wcontext; |
| rcontext=POP(); | rcontext=saved_rcontext; |
| root=POP(); | method_frame=saved_method_frame; |
| self=static_cast<VAliased *>(POP()); | self=saved_self; |
| // return | // return |
| return result; | return result; |
| } | } |
| const String *Request::execute_method(Value& aself, | void Request::execute_method(Value& aself, |
| const String& method_name, bool return_cstr) { | const Method& method, VString *optional_param, |
| if(Value *value=aself.get_element(method_name)) | const String **return_string) { |
| if(Junction *junction=value->get_junction()) | Value *saved_self=self; |
| if(const Method *method=junction->method) | VMethodFrame *saved_method_frame=method_frame; |
| return execute_method(aself, *method, return_cstr); | Value *saved_rcontext=rcontext; |
| WContext *saved_wcontext=wcontext; | |
| // initialize contexts | |
| //method_frame=rcontext=self=&aself; | |
| self=&aself; | |
| // WWrapper local(pool(), &aself, wcontext); | |
| // wcontext=&local; | |
| Junction local_junction(pool(), self, &method, 0,0,0,0); | |
| VMethodFrame local_frame(pool(), method.name, local_junction); | |
| if(optional_param && local_frame.can_store_param()) { | |
| local_frame.store_param(optional_param); | |
| local_frame.fill_unspecified_params(); | |
| } | |
| local_frame.set_self(self); | |
| rcontext=wcontext=method_frame=&local_frame; | |
| // prevent non-string writes for better error reporting | |
| if(return_string) | |
| wcontext->write(local_frame); | |
| // execute! | |
| execute(*method.parser_code); | |
| // result | |
| const String *result=0; | |
| if(return_string) | |
| *return_string=&wcontext->result().as_string(); | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| self=saved_self; | |
| } | |
| void Request::execute_nonvirtual_method(VStateless_class& aclass, | |
| const String& method_name, VString *optional_param, | |
| const String **return_string, | |
| const Method **return_method) { | |
| const Method *method=aclass.get_method(method_name); | |
| if(return_string) | |
| *return_string=0; | |
| if(return_method) | |
| *return_method=method; | |
| if(method) | |
| execute_method(aclass, *method, optional_param, return_string); | |
| } | |
| const String *Request::execute_virtual_method(Value& aself, | |
| const String& method_name) { | |
| if(Value *value=aself.get_element(method_name, &aself, false)) | |
| if(Junction *junction=value->get_junction()) | |
| if(const Method *method=junction->method) { | |
| const String *result; | |
| execute_method(aself, *method, 0/*no params*/, &result); | |
| return result; | |
| } | |
| return 0; | return 0; |
| } | } |