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1.1 paf 1: /*
1.9 paf 2: Parser
3: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.14 paf 4: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.9 paf 5:
1.32 ! paf 6: $Id: pa_request.C,v 1.31 2001/03/14 08:50:04 paf Exp $
1.1 paf 7: */
8:
1.19 paf 9: #include <string.h>
10:
1.1 paf 11: #include "pa_request.h"
1.3 paf 12: #include "pa_wwrapper.h"
13: #include "pa_common.h"
14: #include "pa_vclass.h"
1.11 paf 15: #include "_root.h"
16: #include "_env.h"
1.17 paf 17: #include "_table.h"
1.31 paf 18: #include "pa_globals.h"
1.30 paf 19: #include "pa_vint.h"
20: #include "pa_vmframe.h"
1.32 ! paf 21: #include "pa_types.h"
1.3 paf 22:
1.30 paf 23: #define NEW_STRING(name, value) name=NEW String(pool()); name->APPEND_CONST(value)
24: #define LOCAL_STRING(name, value) String name(pool()); name.APPEND_CONST(value)
1.3 paf 25:
1.28 paf 26: Request::Request(Pool& apool,
27: String::Untaint_lang alang,
1.30 paf 28: const char *adocument_root,
29: const char *apage_filespec) : Pooled(apool),
1.3 paf 30: stack(apool),
31: root_class(apool),
32: env_class(apool),
1.27 paf 33: form_class(apool),
1.3 paf 34: fclasses(apool),
1.28 paf 35: flang(alang),
36: fdocument_root(adocument_root),
37: fpage_filespec(apage_filespec)
1.3 paf 38: {
1.27 paf 39: // root superclass,
1.3 paf 40: // parent of all classes,
41: // operators holder
1.27 paf 42: initialize_root_class(pool(), root_class);
1.6 paf 43: classes().put(*root_class_name, &root_class);
1.27 paf 44: // table class
45: classes().put(*table_class_name, table_class);
46: // table_class->set_name(*table_class_name);
1.3 paf 47:
48: // env class
1.6 paf 49: classes().put(*env_class_name, &env_class);
1.27 paf 50: // form class
51: classes().put(*form_class_name, &form_class);
1.3 paf 52: }
1.1 paf 53:
1.29 paf 54: char *Request::core(const char *sys_auto_path1,
55: const char *sys_auto_path2) {
1.28 paf 56: char *result;
1.29 paf 57: VStateless_class *main_class=0;
1.3 paf 58: TRY {
1.29 paf 59: char *auto_filespec=(char *)malloc(MAX_STRING);
60:
61: // load MAIN class,
62: // it consists of all the auto.p files we'd manage to find
63: // plus
64: // the file user requested us to process
65: // all located classes become children of one another,
66: // composing class we name 'MAIN'
67:
68: // loading system auto.p 1
69: if(sys_auto_path1) {
1.30 paf 70: strncpy(auto_filespec, sys_auto_path1, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 71: strcat(auto_filespec, AUTO_FILE_NAME);
72: main_class=use_file(
73: auto_filespec, false/*ignore possible read problem*/,
74: main_class_name);
75: }
76:
77: // loading system auto.p 2
78: if(sys_auto_path2) {
1.30 paf 79: strncpy(auto_filespec, sys_auto_path2, MAX_STRING-strlen(AUTO_FILE_NAME));
1.29 paf 80: strcat(auto_filespec, AUTO_FILE_NAME);
81: VStateless_class *main_class=use_file(
82: auto_filespec, false/*ignore possible read problem*/,
83: main_class_name);
84: }
1.8 paf 85:
1.13 paf 86: // TODO: использовать $MAIN:limits здесь, пока их не сломали враги
1.7 paf 87:
88: // TODO: load site auto.p files, all assigned bases from upper dir
89: char *site_auto_file="Y:\\parser3\\src\\auto.p";
1.16 paf 90: main_class=use_file(
91: site_auto_file, false/*ignore possible read problem*/,
1.25 paf 92: main_class_name, main_class);
1.7 paf 93:
94: // there must be some auto.p
1.12 paf 95: if(!main_class)
1.7 paf 96: THROW(0,0,
97: 0,
1.24 paf 98: "no 'auto.p' found (nither system nor any site's)");
1.5 paf 99:
1.7 paf 100: // compiling requested file
1.28 paf 101: main_class=use_file(fpage_filespec, true/*don't ignore read problem*/,
1.25 paf 102: main_class_name, main_class);
103:
104: // execute @main[]
1.30 paf 105: result=execute_method(*main_class, *main_method_name);
1.25 paf 106: if(!result)
107: THROW(0,0,
108: 0,
109: "'"MAIN_METHOD_NAME"' method not found");
1.3 paf 110: }
111: CATCH(e) {
1.30 paf 112: TRY {
113: // we're returning not result, but error explanation
114: result=0;
115:
116: if(main_class) { // we've managed to end up with some main_class
117: // maybe we'd be lucky enough as to report an error
118: // in a gracefull way...
119: if(Value *value=main_class->get_element(*exception_method_name))
120: if(Junction *junction=value->get_junction())
121: if(const Method *method=junction->method) {
122: // preparing to pass parameters to
123: // @exception[origin;source;comment;type;code]
124: VMethodFrame *frame=NEW VMethodFrame(pool(), *junction);
125:
126: const String *problem_source=e.problem_source();
127: // origin
128: LOCAL_STRING(origin_name, "origin");
129: VString *origin_value=0;
130: #ifndef NO_STRING_ORIGIN
131: const Origin& origin=problem_source->origin();
132: if(origin.file) {
133: char *buf=(char *)malloc(MAX_STRING);
134: snprintf(buf, MAX_STRING, "%s(%d): ",
135: origin.file, 1+origin.line);
136: String *NEW_STRING(origin_file_line, buf);
137: origin_value=NEW VString(*origin_file_line);
138: }
139: #endif
140: frame->store_param(origin_name, origin_value);
1.28 paf 141:
1.30 paf 142: // source
143: LOCAL_STRING(source_name, "source");
144: frame->store_param(source_name,
145: NEW VString(*problem_source));
146:
147: // comment
148: LOCAL_STRING(comment_name, "comment");
149: String *NEW_STRING(comment_value, e.comment());
150: frame->store_param(comment_name,
151: NEW VString(*comment_value));
152:
153: // type
154: LOCAL_STRING(type_name, "type");
155: Value *type_value;
156: if(e.type())
157: type_value=NEW VString(*e.type());
158: else
159: type_value=NEW VUnknown(pool());
160: frame->store_param(type_name, type_value);
161:
162: // code
163: LOCAL_STRING(code_name, "code");
164: Value *code_value;
165: if(e.code())
166: code_value=NEW VString(*e.code());
167: else
168: code_value=NEW VUnknown(pool());
169: frame->store_param(code_name, code_value);
170:
171: result=execute_method(*frame, *method);
172: }
173: }
174:
175: // couldn't report an error beautifully, doing that ugly
176: if(!result) {
177: result=(char *)malloc(MAX_STRING);
178: result[0]=0;
179: size_t printed=0;
180: const String *problem_source=e.problem_source();
181: if(problem_source) {
1.16 paf 182: #ifndef NO_STRING_ORIGIN
1.30 paf 183: const Origin& origin=problem_source->origin();
184: if(origin.file)
185: printed+=snprintf(result+printed, MAX_STRING-printed, "%s(%d): ",
186: origin.file, 1+origin.line);
1.28 paf 187: #endif
1.30 paf 188: printed+=snprintf(result+printed, MAX_STRING-printed, "'%s' ",
189: problem_source->cstr());
190: }
191: printed+=snprintf(result+printed, MAX_STRING-printed, "%s",
192: e.comment());
193: const String *type=e.type();
194: if(type) {
195: printed+=snprintf(result+printed, MAX_STRING-printed, " type: %s",
196: type->cstr());
197: const String *code=e.code();
198: if(code)
199: printed+=snprintf(result+printed, MAX_STRING-printed, ", code: %s",
200: code->cstr());
201: }
202: }
1.3 paf 203: }
1.30 paf 204: CATCH(e) {
205: // exception in exception handler occured
206: // probably totally out of memory
207: // can't say anything about such sad story
208: // would just return 0
209: result=0;
1.1 paf 210: }
1.30 paf 211: END_CATCH
1.1 paf 212: }
1.3 paf 213: END_CATCH
1.28 paf 214:
215: return result;
1.1 paf 216: }
217:
1.26 paf 218: VStateless_class *Request::use_file(
219: const char *file, bool fail_on_read_problem,
220: const String *name,
221: VStateless_class *base_class) {
1.3 paf 222: // TODO: обнаружить|решить cyclic dependences
1.5 paf 223: char *source=file_read(pool(), file, fail_on_read_problem);
1.3 paf 224: if(!source)
1.12 paf 225: return base_class;
1.3 paf 226:
1.25 paf 227: return use_buf(source, file, 0/*new class*/, name, base_class);
1.16 paf 228: }
229:
1.26 paf 230: VStateless_class *Request::use_buf(
231: const char *source, const char *file,
232: VStateless_class *aclass, const String *name,
233: VStateless_class *base_class) {
1.5 paf 234: // compile loaded class
1.26 paf 235: VStateless_class& cclass=COMPILE(source, aclass, name, base_class, file);
1.1 paf 236:
1.4 paf 237: // locate and execute possible @auto[] static method
1.25 paf 238: execute_method(cclass, *auto_method_name, false /*no result needed*/);
1.16 paf 239: return &cclass;
1.20 paf 240: }
241:
242: void Request::fail_if_junction_(bool is,
1.26 paf 243: Value& value, const String& method_name, char *msg) {
1.20 paf 244:
245: // fail_if_junction(true, junction = fail
246: // fail_if_junction(false, not junction = fail
247: if((value.get_junction()!=0) ^ !is)
248: THROW(0, 0,
249: &method_name,
250: msg);
1.19 paf 251: }
252:
253: char *Request::relative(const char *path, const char *file) {
1.21 paf 254: char *result=(char *)malloc(strlen(path)+strlen(file)+1);
1.19 paf 255: strcpy(result, path);
1.32 ! paf 256: rsplit(result, PATH_DELIMITER_CHAR);
! 257: strcat(result, PATH_DELIMITER_STRING);
1.19 paf 258: strcat(result, file);
259: return result;
260: }
261:
262: char *Request::absolute(const char *name) {
263: if(name[0]=='/') {
1.28 paf 264: char *result=(char *)malloc(strlen(fdocument_root)+strlen(name)+1);
265: strcpy(result, fdocument_root);
1.19 paf 266: strcat(result, name);
267: return result;
268: } else
1.28 paf 269: return relative(fpage_filespec, name);
1.1 paf 270: }