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| version 1.2, 2001/02/20 19:21:13 | version 1.280, 2002/10/14 12:16:06 |
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| Line 1 | Line 1 |
| /* | /** @file |
| $Id$ | Parser: executor part of request class. |
| Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | |
| */ | */ |
| #include "pa_array.h" | static const char* IDENT_EXECUTE_C="$Date$"; |
| #include "code.h" | |
| #include "pa_opcode.h" | |
| #include "pa_array.h" | |
| #include "pa_request.h" | |
| #include "pa_vstring.h" | |
| #include "pa_vhash.h" | |
| #include "pa_vvoid.h" | |
| #include "pa_vcode_frame.h" | |
| #include "pa_vmethod_frame.h" | |
| #include "pa_vobject.h" | |
| #include "pa_vdouble.h" | |
| #include "pa_vbool.h" | |
| #include "pa_vtable.h" | |
| #include "pa_vfile.h" | |
| #include "pa_vimage.h" | |
| #include "pa_wwrapper.h" | |
| //#define DEBUG_EXECUTE | |
| //#define DEBUG_STRING_APPENDS_VS_EXPANDS | |
| #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS | |
| ulong wcontext_result_size=0; | |
| #endif | |
| #include <stdio.h> | |
| #ifdef DEBUG_EXECUTE | |
| char *opcode_name[]={ | char *opcode_name[]={ |
| "STRING", | // literals |
| "CODE_ARRAY", | "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM", |
| "NESTED_CODE", | |
| // actions | |
| "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", | "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE", |
| "CONSTRUCT", | "GET_CLASS", |
| "EXPRESSION_EVAL", "MODIFY_EVAL", | "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT", |
| "WRITE", | "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE", |
| "REPLACE_RESULT", | "GET_ELEMENT_OR_OPERATOR", "OP_GET_ELEMENT_OR_JUNCTION_EXPAND", |
| "GET_ELEMENT", "GET_ELEMENT__WRITE", | "GET_ELEMENT", "GET_ELEMENT__WRITE", |
| "CREATE_EWPOOL", "REDUCE_EWPOOL", | "OBJECT_POOL", "STRING_POOL", |
| "CREATE_RWPOOL", "REDUCE_RWPOOL", | |
| "GET_METHOD_FRAME", | |
| "CREATE_JUNCTION", | |
| "STORE_PARAM", | "STORE_PARAM", |
| "CALL" | "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION", |
| "CALL", "CALL__WRITE", | |
| // expression ops: unary | |
| "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS", | |
| // expression ops: binary | |
| "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV", | |
| "BIN_SL", "BIN_SR", | |
| "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_debug_printf(Pool& pool, const char *fmt,va_list args) { |
| if(!ops) | char buf[MAX_STRING]; |
| return; | vsnprintf(buf, MAX_STRING, fmt, args); |
| SAPI::log(pool, "%s", buf); | |
| int size=ops->size(); | } |
| for(int i=0; i<size; i++) { | |
| int code=reinterpret_cast<int>(ops->raw_get(i)); | void debug_printf(Pool& pool, const char *fmt, ...) { |
| printf("%*s%s", level*4, "", opcode_name[code]); | va_list args; |
| va_start(args,fmt); | |
| va_debug_printf(pool,fmt,args); | |
| va_end(args); | |
| } | |
| void debug_dump(Pool& pool, int level, const Array& ops) { | |
| Array_iter i(ops); | |
| while(i.has_next()) { | |
| Operation op; | |
| op.cast=i.next(); | |
| if(code==OP_STRING) { | if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) { |
| printf(" \"%s\"", static_cast<const String *>(ops->raw_get(++i))->cstr()); | Value *value=static_cast<Value *>(i.next()); |
| debug_printf(pool, | |
| "%*s%s" | |
| " \"%s\" %s", | |
| level*4, "", opcode_name[op.code], | |
| value->get_string()->cstr(), value->type()); | |
| continue; | |
| } | } |
| printf("\n"); | debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]); |
| if(code==OP_CODE_ARRAY) { | switch(op.code) { |
| const Array *local_ops=reinterpret_cast<const Array *>(ops->raw_get(++i)); | case OP_CURLY_CODE__STORE_PARAM: |
| dump(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) { | |
| // _asm int 3; | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), "source----------------------------\n"); | |
| debug_dump(pool(), 0, ops); | |
| debug_printf(pool(), "execution-------------------------\n"); | |
| #endif | |
| const String *last_get_element_name=0; | |
| Array_iter i(ops); | |
| while(i.has_next()) { | |
| Operation op; | |
| op.cast=i.next(); | |
| #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) { | |
| // param in next instruction | |
| case OP_VALUE: | |
| { | |
| value=static_cast<Value *>(i.next()); | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type()); | |
| #endif | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_GET_CLASS: | |
| { | |
| // maybe they do ^class:method[] call, remember the fact | |
| wcontext->set_somebody_entered_some_class(); | |
| const String& name=POP_NAME(); | |
| value=static_cast<Value *>(classes().get(name)); | |
| if(!value) | |
| throw Exception("parser.runtime", | |
| &name, | |
| "class is undefined"); | |
| PUSH(value); | |
| break; | |
| } | |
| // OP_WITH | |
| case OP_WITH_ROOT: | |
| { | |
| PUSH(method_frame); | |
| break; | |
| } | |
| case OP_WITH_SELF: | |
| { | |
| PUSH(self); | |
| break; | |
| } | |
| case OP_WITH_READ: | |
| { | |
| PUSH(rcontext); | |
| break; | |
| } | |
| case OP_WITH_WRITE: | |
| { | |
| PUSH(wcontext); | |
| break; | |
| } | |
| // OTHER ACTIONS BUT WITHs | |
| case OP_CONSTRUCT_VALUE: | |
| { | |
| value=POP(); | |
| const String& name=POP_NAME(); | |
| Value *ncontext=POP(); | |
| ncontext->put_element(name, value, false); | |
| break; | |
| } | |
| case OP_CONSTRUCT_EXPR: | |
| { | |
| // 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(); | |
| Value *ncontext=POP(); | |
| ncontext->put_element(name, value, false); | |
| 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; | |
| } | |
| case OP_WRITE_VALUE: | |
| { | |
| value=POP(); | |
| write_assign_lang(*value, last_get_element_name); | |
| break; | |
| } | |
| case OP_WRITE_EXPR_RESULT: | |
| { | |
| value=POP(); | |
| write_no_lang(*value->as_expr_result()); | |
| // must be after write(result) and | |
| // see OP_PREPARE_TO_EXPRESSION | |
| wcontext->set_in_expression(false); | |
| break; | |
| } | |
| case OP_STRING__WRITE: | |
| { | |
| VString *vstring=static_cast<VString *>(i.next()); | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), " \"%s\"", vstring->string().cstr()); | |
| #endif | |
| write_no_lang(vstring->string()); | |
| break; | |
| } | |
| case OP_GET_ELEMENT_OR_OPERATOR: | |
| { | |
| value=get_element(last_get_element_name, true); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_GET_ELEMENT_OR_JUNCTION_EXPAND: | |
| { | |
| value=get_element(last_get_element_name, false, true/* the only user */); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_GET_ELEMENT: | |
| { | |
| value=get_element(last_get_element_name, false); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_GET_ELEMENT__WRITE: | |
| { | |
| value=get_element(last_get_element_name/*not followed by call, not needed really*/, false); | |
| write_assign_lang(*value, last_get_element_name); | |
| break; | |
| } | |
| case OP_OBJECT_POOL: | |
| { | |
| const Array *local_ops=reinterpret_cast<const Array *>(i.next()); | |
| WContext *saved_wcontext=wcontext; | |
| uchar saved_lang= flang; | |
| flang=String::UL_PASS_APPENDED; | |
| WWrapper local(pool(), 0 /*empty*/, wcontext); | |
| wcontext=&local; | |
| execute(*local_ops); | |
| value=&wcontext->result().as_value(); | |
| flang=saved_lang; | |
| wcontext=saved_wcontext; | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_STRING_POOL: | |
| { | |
| 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(); | |
| Value *value; | |
| if(string) | |
| value=NEW VString(*string); | |
| else | |
| NEW VVoid(pool()); | |
| wcontext=saved_wcontext; | |
| PUSH(value); | |
| break; | |
| } | |
| // CALL | |
| case OP_STORE_PARAM: | |
| { | |
| value=POP(); | |
| 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; | |
| } | |
| case OP_CURLY_CODE__STORE_PARAM: | |
| case OP_EXPR_CODE__STORE_PARAM: | |
| { | |
| // code | |
| const Array *local_ops=reinterpret_cast<const Array *>(i.next()); | |
| VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value()); | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), " (%d)\n", local_ops->size()); | |
| debug_dump(pool(), 1, *local_ops); | |
| #endif | |
| // when they evaluate expression parameter, | |
| // the object expression result | |
| // does not need to be written into calling frame | |
| // 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; | |
| } | |
| case OP_PREPARE_TO_CONSTRUCT_OBJECT: | |
| { | |
| wcontext->set_constructing(true); | |
| break; | |
| } | |
| case OP_PREPARE_TO_EXPRESSION: | |
| { | |
| wcontext->set_in_expression(true); | |
| break; | |
| } | |
| case OP_CALL: | |
| case OP_CALL__WRITE: | |
| { | |
| 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); | |
| debug_printf(pool(), "->\n"); | |
| #endif | |
| value=POP(); | |
| 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()); | |
| // check: | |
| // that this is method-junction, not a code-junction | |
| // [disabling these contstructions:] | |
| // $junction{code} | |
| // ^junction[] | |
| if(!junction->method) | |
| throw Exception("parser.runtime", | |
| last_get_element_name, | |
| "(%s) is code 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(); | |
| if(wcontext->get_constructing()) { | |
| wcontext->set_constructing(false); | |
| if(frame.junction.method->call_type!=Method::CT_STATIC) { | |
| // this is a constructor call | |
| if(Value *value=called_class->create_new_value(pool())) { | |
| // some stateless_class creatable derivates | |
| self=value; | |
| } else | |
| throw Exception("parser.runtime", | |
| &frame.name(), | |
| "is not a constructor, system class '%s' can be constructed only implicitly", | |
| called_class->name().cstr()); | |
| frame.write(*self, | |
| String::UL_CLEAN // not used, always an object, not string | |
| ); | |
| } else | |
| 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); | |
| // 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= | |
| called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC; | |
| if( | |
| method.call_type==Method::CT_ANY || | |
| method.call_type==call_type) { // allowed call type? | |
| try { | |
| if(method.native_code) { // native code? | |
| // method_frame unchanged, so that ^for ^foreach & co may write to locals | |
| 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 | |
| method_frame=&frame; | |
| // 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", | |
| call_type==Method::CT_STATIC?"statically":"dynamically"); | |
| } | |
| StringOrValue result=wcontext->result(); | |
| wcontext=saved_wcontext; | |
| 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; | |
| } | |
| // expression ops: unary | |
| case OP_NEG: | |
| { | |
| Value *operand=POP(); | |
| value=NEW VDouble(pool(), -operand->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_INV: | |
| { | |
| Value *operand=POP(); | |
| value=NEW VDouble(pool(), ~operand->as_int()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NOT: | |
| { | |
| Value *operand=POP(); | |
| value=NEW VBool(pool(), !operand->as_bool()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_DEF: | |
| { | |
| Value *operand=POP(); | |
| value=NEW VBool(pool(), operand->is_defined()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_IN: | |
| { | |
| /// @test String::cmp | |
| Value *operand=POP(); | |
| const char *path=operand->as_string().cstr(); | |
| value=NEW VBool(pool(), | |
| info.uri && strncmp(path, info.uri, strlen(path))==0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_FEXISTS: | |
| { | |
| Value *operand=POP(); | |
| value=NEW VBool(pool(), | |
| file_readable(absolute(operand->as_string()))); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_DEXISTS: | |
| { | |
| Value *operand=POP(); | |
| value=NEW VBool(pool(), | |
| dir_readable(absolute(operand->as_string()))); | |
| PUSH(value); | |
| break; | |
| } | |
| // expression ops: binary | |
| case OP_SUB: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VDouble(pool(), a->as_double() - b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_ADD: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VDouble(pool(), a->as_double() + b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_MUL: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VDouble(pool(), a->as_double() * b->as_double()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_DIV: | |
| { | |
| b=POP(); a=POP(); | |
| 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); | |
| break; | |
| } | |
| case OP_MOD: | |
| { | |
| b=POP(); a=POP(); | |
| 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, | |
| "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); | |
| break; | |
| } | |
| case OP_BIN_SL: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VInt(pool(), | |
| a->as_int() << | |
| b->as_int()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_BIN_SR: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VInt(pool(), | |
| a->as_int() >> | |
| b->as_int()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_BIN_AND: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VInt(pool(), | |
| a->as_int() & | |
| b->as_int()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_BIN_OR: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VInt(pool(), | |
| a->as_int() | | |
| b->as_int()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_BIN_XOR: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VInt(pool(), | |
| a->as_int() ^ | |
| b->as_int()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_LOG_AND: | |
| { | |
| b_code=POP_CODE(); a=POP(); | |
| 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); | |
| break; | |
| } | |
| case OP_LOG_OR: | |
| { | |
| b_code=POP_CODE(); a=POP(); | |
| 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); | |
| break; | |
| } | |
| case OP_LOG_XOR: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->as_bool() ^ b->as_bool()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_LT: | |
| { | |
| b=POP(); a=POP(); | |
| double result=a->as_double() - b->as_double(); | |
| value=NEW VBool(pool(), result < 0.0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_GT: | |
| { | |
| b=POP(); a=POP(); | |
| double result=a->as_double() - b->as_double(); | |
| value=NEW VBool(pool(), result > 0.0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_LE: | |
| { | |
| b=POP(); a=POP(); | |
| double result=a->as_double() - b->as_double(); | |
| value=NEW VBool(pool(), result <= 0.0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_GE: | |
| { | |
| b=POP(); a=POP(); | |
| double result=a->as_double() - b->as_double(); | |
| value=NEW VBool(pool(), result >= 0.0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_EQ: | |
| { | |
| b=POP(); a=POP(); | |
| double result=a->as_double() - b->as_double(); | |
| value=NEW VBool(pool(), result == 0.0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_NUM_NE: | |
| { | |
| b=POP(); a=POP(); | |
| double result=a->as_double() - b->as_double(); | |
| value=NEW VBool(pool(), result != 0.0); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_STR_LT: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->as_string() < b->as_string()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_STR_GT: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->as_string() > b->as_string()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_STR_LE: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->as_string() <= b->as_string()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_STR_GE: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->as_string() >= b->as_string()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_STR_EQ: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->as_string() == b->as_string()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_STR_NE: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->as_string() != b->as_string()); | |
| PUSH(value); | |
| break; | |
| } | |
| case OP_IS: | |
| { | |
| b=POP(); a=POP(); | |
| value=NEW VBool(pool(), a->is(b->as_string().cstr())); | |
| PUSH(value); | |
| break; | |
| } | |
| default: | |
| throw Exception(0, | |
| 0, | |
| "invalid opcode %d", op.code); | |
| } | |
| } | |
| } | |
| /// @test cache|prepare junctions | |
| Value *Request::get_element(const String *& remember_name, | |
| bool can_call_operator, bool should_explode_junction) { | |
| const String& name=POP_NAME(); remember_name=&name; | |
| Value *ncontext=POP(); | |
| 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(), | |
| *main_class, 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(should_explode_junction) // process $junction, but leave $junction.xxx as is | |
| value=&process_to_value(*value); // process possible code-junction | |
| } else | |
| value=NEW VVoid(pool()); | |
| return value; | |
| } | |
| /** @param 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 | |
| using the fact it's either string_ or value_ result requested to speed up checkes | |
| */ | |
| StringOrValue Request::process(Value& input_value, bool intercept_string) { | |
| StringOrValue result; | |
| Junction *junction=input_value.get_junction(); | |
| if(junction && junction->code) { // is it a code-junction? | |
| // process it | |
| #ifdef DEBUG_EXECUTE | |
| debug_printf(pool(), "ja->\n"); | |
| #endif | |
| 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; | |
| self=&junction->self; | |
| method_frame=junction->method_frame; | |
| rcontext=junction->rcontext; | |
| // 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, | |
| // BUT intercepts string writes | |
| VCodeFrame local(pool(), *junction->wcontext, junction->wcontext); | |
| wcontext=&local; | |
| // execute it | |
| recoursion_checked_execute(0/*result_name*/, *junction->code); | |
| // CodeFrame soul: | |
| // string writes were intercepted | |
| // returning them as the result of getting code-junction | |
| result.set_string(*wcontext->get_string()); | |
| } else { | |
| // plain wwrapper | |
| WWrapper local(pool(), 0/*empty*/, wcontext); | |
| wcontext=&local; | |
| // execute it | |
| recoursion_checked_execute(0/*result_name*/, *junction->code); | |
| result=wcontext->result(); | |
| } | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| 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(VMethodFrame& amethod_frame, const Method& method) { | |
| Value *saved_self=self; | |
| VMethodFrame *saved_method_frame=method_frame; | |
| Value *saved_rcontext=rcontext; | |
| WContext *saved_wcontext=wcontext; | |
| // initialize contexts | |
| self=rcontext=wcontext=method_frame=&amethod_frame; | |
| // execute! | |
| execute(*method.parser_code); | |
| // result | |
| const String& result=wcontext->result().as_string(); | |
| wcontext=saved_wcontext; | |
| rcontext=saved_rcontext; | |
| method_frame=saved_method_frame; | |
| self=saved_self; | |
| // return | |
| return result; | |
| } | |
| void Request::execute_method(Value& aself, | |
| const Method& method, VString *optional_param, | |
| const String **return_string) { | |
| Value *saved_self=self; | |
| VMethodFrame *saved_method_frame=method_frame; | |
| 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 Method *method, VString *optional_param, | |
| const String **return_string, | |
| const Method **return_method) { | |
| if(return_string) | |
| *return_string=0; | |
| if(return_method) | |
| *return_method=method; | |
| if(method) | |
| execute_method(aclass, *method, optional_param, return_string); | |
| } | |
| void execute(Pool *pool, const Array *ops) { | const String *Request::execute_virtual_method(Value& aself, |
| if(!ops) | const String& method_name) { |
| return; | if(Value *value=aself.get_element(method_name, &aself, false)) |
| if(Junction *junction=value->get_junction()) | |
| puts("---------------------------"); | if(const Method *method=junction->method) { |
| dump(0, ops); | const String *result; |
| puts("---------------------------"); | execute_method(aself, *method, 0/*no params*/, &result); |
| return result; | |
| } | |
| return 0; | |
| } | } |