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| version 1.1, 2001/02/21 16:12:11 | version 1.32, 2001/03/14 09:02:52 |
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| Line 1 | Line 1 |
| /* | /* |
| $Id$ | Parser |
| Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com) | |
| Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf) | |
| $Id$ | |
| */ | */ |
| #include <string.h> | |
| #include "pa_request.h" | #include "pa_request.h" |
| #include "compile.h" | #include "pa_wwrapper.h" |
| #include "pa_context.h" | #include "pa_common.h" |
| #include "pa_vclass.h" | |
| #include "_root.h" | |
| #include "_env.h" | |
| #include "_table.h" | |
| #include "pa_globals.h" | |
| #include "pa_vint.h" | |
| #include "pa_vmframe.h" | |
| #include "pa_types.h" | |
| #define NEW_STRING(name, value) name=NEW String(pool()); name->APPEND_CONST(value) | |
| #define LOCAL_STRING(name, value) String name(pool()); name.APPEND_CONST(value) | |
| Request::Request(Pool& apool, | |
| String::Untaint_lang alang, | |
| const char *adocument_root, | |
| const char *apage_filespec) : Pooled(apool), | |
| stack(apool), | |
| root_class(apool), | |
| env_class(apool), | |
| form_class(apool), | |
| fclasses(apool), | |
| flang(alang), | |
| fdocument_root(adocument_root), | |
| fpage_filespec(apage_filespec) | |
| { | |
| // root superclass, | |
| // parent of all classes, | |
| // operators holder | |
| initialize_root_class(pool(), root_class); | |
| classes().put(*root_class_name, &root_class); | |
| // table class | |
| classes().put(*table_class_name, table_class); | |
| // table_class->set_name(*table_class_name); | |
| // env class | |
| classes().put(*env_class_name, &env_class); | |
| // form class | |
| classes().put(*form_class_name, &form_class); | |
| } | |
| char *Request::core(const char *sys_auto_path1, | |
| const char *sys_auto_path2) { | |
| char *result; | |
| VStateless_class *main_class=0; | |
| TRY { | |
| char *auto_filespec=(char *)malloc(MAX_STRING); | |
| // load MAIN class, | |
| // it consists of all the auto.p files we'd manage to find | |
| // plus | |
| // the file user requested us to process | |
| // all located classes become children of one another, | |
| // composing class we name 'MAIN' | |
| void Request::core() { | // loading system auto.p 1 |
| Exception exception; | if(sys_auto_path1) { |
| Local_request_exception subst(*this, exception); | strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME)); |
| if(EXCEPTION_TRY(exception())) { | strcat(auto_filespec, AUTO_FILE_NAME); |
| String name_RUN(pool()); name_RUN.APPEND_CONST("RUN"); | main_class=use_file( |
| execute_MAIN(construct_class(name_RUN, load_and_compile_RUN()))); | auto_filespec, false/*ignore possible read problem*/, |
| } else { | main_class_name); |
| Exception& e=exception(); | |
| printf("operator error occured: %s\n", e.comment()); | |
| const String *type=e.type(); | |
| if(type) { | |
| printf(" type: %s", type->cstr()); | |
| const String *code=e.code(); | |
| if(code) | |
| printf(", code: %s", code->cstr()); | |
| printf("\n"); | |
| } | } |
| const String *problem_source=e.problem_source(); | |
| if(problem_source) { | // loading system auto.p 2 |
| const Origin& origin=problem_source->origin(); | if(sys_auto_path2) { |
| printf(" '%s'\n", | strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME)); |
| problem_source->cstr()); | strcat(auto_filespec, AUTO_FILE_NAME); |
| if(origin.file) | VStateless_class *main_class=use_file( |
| printf(" [%s:%d]", | auto_filespec, false/*ignore possible read problem*/, |
| origin.file, origin.line); | main_class_name); |
| printf("\n"); | |
| } | } |
| // TODO: использовать $MAIN:limits здесь, пока их не сломали враги | |
| // TODO: load site auto.p files, all assigned bases from upper dir | |
| char *site_auto_file="Y:\\parser3\\src\\auto.p"; | |
| main_class=use_file( | |
| site_auto_file, false/*ignore possible read problem*/, | |
| main_class_name, main_class); | |
| // there must be some auto.p | |
| if(!main_class) | |
| THROW(0,0, | |
| 0, | |
| "no 'auto.p' found (nither system nor any site's)"); | |
| // compiling requested file | |
| main_class=use_file(fpage_filespec, true/*don't ignore read problem*/, | |
| main_class_name, main_class); | |
| // execute @main[] | |
| result=execute_method(*main_class, *main_method_name); | |
| if(!result) | |
| THROW(0,0, | |
| 0, | |
| "'"MAIN_METHOD_NAME"' method not found"); | |
| } | |
| CATCH(e) { | |
| TRY { | |
| // we're returning not result, but error explanation | |
| result=0; | |
| if(main_class) { // we've managed to end up with some main_class | |
| // maybe we'd be lucky enough as to report an error | |
| // in a gracefull way... | |
| if(Value *value=main_class->get_element(*exception_method_name)) | |
| if(Junction *junction=value->get_junction()) | |
| if(const Method *method=junction->method) { | |
| // preparing to pass parameters to | |
| // @exception[origin;source;comment;type;code] | |
| VMethodFrame *frame=NEW VMethodFrame(pool(), *junction); | |
| const String *problem_source=e.problem_source(); | |
| // origin | |
| LOCAL_STRING(origin_name, "origin"); | |
| VString *origin_value=0; | |
| #ifndef NO_STRING_ORIGIN | |
| const Origin& origin=problem_source->origin(); | |
| if(origin.file) { | |
| char *buf=(char *)malloc(MAX_STRING); | |
| snprintf(buf, MAX_STRING, "%s(%d): ", | |
| origin.file, 1+origin.line); | |
| String *NEW_STRING(origin_file_line, buf); | |
| origin_value=NEW VString(*origin_file_line); | |
| } | |
| #endif | |
| frame->store_param(origin_name, origin_value); | |
| // source | |
| LOCAL_STRING(source_name, "source"); | |
| frame->store_param(source_name, | |
| NEW VString(*problem_source)); | |
| // comment | |
| LOCAL_STRING(comment_name, "comment"); | |
| String *NEW_STRING(comment_value, e.comment()); | |
| frame->store_param(comment_name, | |
| NEW VString(*comment_value)); | |
| // type | |
| LOCAL_STRING(type_name, "type"); | |
| Value *type_value; | |
| if(e.type()) | |
| type_value=NEW VString(*e.type()); | |
| else | |
| type_value=NEW VUnknown(pool()); | |
| frame->store_param(type_name, type_value); | |
| // code | |
| LOCAL_STRING(code_name, "code"); | |
| Value *code_value; | |
| if(e.code()) | |
| code_value=NEW VString(*e.code()); | |
| else | |
| code_value=NEW VUnknown(pool()); | |
| frame->store_param(code_name, code_value); | |
| result=execute_method(*frame, *method); | |
| } | |
| } | |
| // couldn't report an error beautifully, doing that ugly | |
| if(!result) { | |
| result=(char *)malloc(MAX_STRING); | |
| result[0]=0; | |
| size_t printed=0; | |
| const String *problem_source=e.problem_source(); | |
| if(problem_source) { | |
| #ifndef NO_STRING_ORIGIN | |
| const Origin& origin=problem_source->origin(); | |
| if(origin.file) | |
| printed+=snprintf(result+printed, MAX_STRING-printed, "%s(%d): ", | |
| origin.file, 1+origin.line); | |
| #endif | |
| printed+=snprintf(result+printed, MAX_STRING-printed, "'%s' ", | |
| problem_source->cstr()); | |
| } | |
| printed+=snprintf(result+printed, MAX_STRING-printed, "%s", | |
| e.comment()); | |
| const String *type=e.type(); | |
| if(type) { | |
| printed+=snprintf(result+printed, MAX_STRING-printed, " type: %s", | |
| type->cstr()); | |
| const String *code=e.code(); | |
| if(code) | |
| printed+=snprintf(result+printed, MAX_STRING-printed, ", code: %s", | |
| code->cstr()); | |
| } | |
| } | |
| } | |
| CATCH(e) { | |
| // exception in exception handler occured | |
| // probably totally out of memory | |
| // can't say anything about such sad story | |
| // would just return 0 | |
| result=0; | |
| } | |
| END_CATCH | |
| } | } |
| END_CATCH | |
| return result; | |
| } | } |
| Array& Request::load_and_compile_RUN() { | VStateless_class *Request::use_file( |
| char *file="c:\\temp\\test.p"; | const char *file, bool fail_on_read_problem, |
| char *source=file_read(pool(), file); | const String *name, |
| Array& compiled_methods=COMPILE(request, source, file); | VStateless_class *base_class) { |
| return compiled_methods; | // TODO: обнаружить|решить cyclic dependences |
| char *source=file_read(pool(), file, fail_on_read_problem); | |
| if(!source) | |
| return base_class; | |
| return use_buf(source, file, 0/*new class*/, name, base_class); | |
| } | } |
| VClass *Request::construct_class(String& name, Array& compiled_methods) { | VStateless_class *Request::use_buf( |
| // create new 'name' vclass, add it to request's classes | const char *source, const char *file, |
| Array immediate_parents(pool); | VStateless_class *aclass, const String *name, |
| // TODO: immediate_parents=@PARENTS | VStateless_class *base_class) { |
| // compile loaded class | |
| VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file); | |
| VClass *vclass=new(pool) VClass(pool, name, immediate_parents); | // locate and execute possible @auto[] static method |
| request.classes().put(name, vclass); | execute_method(cclass, *auto_method_name, false /*no result needed*/); |
| return &cclass; | |
| for(int i=0; i<compiled_methods.size(); i++) { | |
| // TODO: filter out @PARENTS & ?co? | |
| Method &method=*static_cast<Method *>(compiled_methods.quick_get(i)); | |
| vclass->add_method(method.name, method); | |
| } | |
| } | } |
| char *Request::execute_MAIN(Value *class_RUN) { | void Request::fail_if_junction_(bool is, |
| // initialize contexts | Value& value, const String& method_name, char *msg) { |
| root=self=rcontext=class_RUN; | |
| wcontext=new(pool()) WContext(pool()); | |
| // locate @main code | |
| String name_main(pool); | |
| name_main.APPEND_CONST(MAIN_METHOD_NAME); | |
| Method *method_main=class_RUN->get_method(name_main); | |
| if(!method_main) | |
| request.exception().raise(0,0, | |
| &class_RUN->name(), | |
| "no 'main' method in class"); | |
| // execute! | // fail_if_junction(true, junction = fail |
| execute(method_main->code); | // fail_if_junction(false, not junction = fail |
| if((value.get_junction()!=0) ^ !is) | |
| THROW(0, 0, | |
| &method_name, | |
| msg); | |
| } | |
| char *Request::relative(const char *path, const char *file) { | |
| char *result=(char *)malloc(strlen(path)+strlen(file)+1); | |
| strcpy(result, path); | |
| rsplit(result, PATH_DELIMITER_CHAR); | |
| strcat(result, PATH_DELIMITER_STRING); | |
| strcat(result, file); | |
| return result; | |
| } | |
| // return chars | char *Request::absolute(const char *name) { |
| return wcontext.get_string()->cstr(); | if(name[0]=='/') { |
| char *result=(char *)malloc(strlen(fdocument_root)+strlen(name)+1); | |
| strcpy(result, fdocument_root); | |
| strcat(result, name); | |
| return result; | |
| } else | |
| return relative(fpage_filespec, name); | |
| } | } |