Annotation of parser3/src/classes/root.C, revision 1.27
1.1 paf 1: /*
1.10 paf 2: Parser
3: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.12 paf 4: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.10 paf 5:
1.27 ! paf 6: $Id: root.C,v 1.26 2001/03/12 17:16:48 paf Exp $
1.1 paf 7: */
8:
1.18 paf 9: #include <string.h>
10:
1.1 paf 11: #include "pa_request.h"
1.8 paf 12: #include "_root.h"
1.1 paf 13:
1.18 paf 14: static void _if(Request& r, const String&, Array *params) {
1.2 paf 15: bool condition=
1.18 paf 16: r.process(
1.6 paf 17: *static_cast<Value *>(params->get(0)),
1.11 paf 18: 0/*no name*/,
1.14 paf 19: false/*don't intercept string*/).get_bool();
1.6 paf 20: if(condition) {
1.18 paf 21: Value& value=r.process(*static_cast<Value *>(params->get(1)));
1.22 paf 22: r.write_pass_lang(value);
1.6 paf 23: } else if(params->size()==3) {
1.18 paf 24: Value& value=r.process(*static_cast<Value *>(params->get(2)));
1.22 paf 25: r.write_pass_lang(value);
1.6 paf 26: }
1.1 paf 27: }
28:
1.22 paf 29: static void _untaint(Request& r, const String& method_name, Array *params) {
1.18 paf 30: const String& lang_name=r.process(*static_cast<Value *>(params->get(0))).as_string();
1.15 paf 31: String::Untaint_lang lang=static_cast<String::Untaint_lang>(
1.23 paf 32: untaint_lang_name2enum->get_int(lang_name));
1.15 paf 33: if(!lang)
34: R_THROW(0, 0,
35: &lang_name,
1.18 paf 36: "invalid untaint language");
1.15 paf 37:
1.24 paf 38: {
39: Temp_lang temp_lang(r, lang);
40: Value *vbody=static_cast<Value *>(params->get(1));
41: // forcing ^untaint[]{this param type}
1.26 paf 42: r.fail_if_junction_(false, *vbody,
43: method_name, "body must be junction");
1.24 paf 44:
45: r.write_pass_lang(r.process(*vbody));
46: }
1.15 paf 47: }
48:
49:
1.22 paf 50: static void _process(Request& r, const String& method_name, Array *params) {
1.20 paf 51: // calculate pseudo file name of processed chars
52: // would be something like "/some/file(4) process"
1.18 paf 53: char place[MAX_STRING];
54: #ifndef NO_STRING_ORIGIN
1.25 paf 55: const Origin& origin=method_name.origin();
1.18 paf 56: snprintf(place, MAX_STRING, "%s(%d) %s",
57: origin.file, 1+origin.line,
1.22 paf 58: method_name.cstr());
1.18 paf 59: #else
1.22 paf 60: strncpy(place, MAX_STRING, method_name.cstr());
1.18 paf 61: #endif
62:
1.20 paf 63: VClass& self_class=*r.self->get_class();
1.22 paf 64: {
65: // temporary zero @main so to maybe-replace it in processed code
66: Temp_method temp_method(self_class, *main_method_name, 0);
67:
1.25 paf 68: // evaluate source to process
69: const String& source=
70: r.process(*static_cast<Value *>(params->get(0))).as_string();
71:
1.22 paf 72: // process source code, append processed methods to 'self' class
73: // maybe-define new @main
74: r.use_buf(source.cstr(), place, &self_class);
75:
76: // maybe-execute @main[]
77: if(const Method *method=self_class.get_method(*main_method_name)) {
78: // execute!
79: r.execute(*method->parser_code);
80: }
1.18 paf 81: }
82: }
83:
1.26 paf 84: static void _rem(Request& r, const String& method_name, Array *params) {
1.27 ! paf 85: // forcing ^rem{this param type}
1.26 paf 86: r.fail_if_junction_(false, *static_cast<Value *>(params->get(0)),
87: method_name, "body must be junction");
88: }
1.18 paf 89:
1.27 ! paf 90:
! 91: // TODO: отловить бесконечный цикл
! 92: static void _while(Request& r, const String& method_name, Array *params) {
! 93: Value& vcondition=*static_cast<Value *>(params->get(0));
! 94: // forcing ^while(this param type){}
! 95: r.fail_if_junction_(false, vcondition,
! 96: method_name, "condition must be junction");
! 97:
! 98: Value& body=*static_cast<Value *>(params->get(1));
! 99: // forcing ^while(){this param type}
! 100: r.fail_if_junction_(false, body,
! 101: method_name, "body must be junction");
! 102:
! 103: // while...
! 104: int endless_loop_count=0;
! 105: while(true) {
! 106: if(++endless_loop_count>=1973) // endless loop?
! 107: R_THROW(0, 0,
! 108: &method_name,
! 109: "endless loop detected");
! 110:
! 111: bool condition=
! 112: r.process(
! 113: vcondition,
! 114: 0/*no name*/,
! 115: false/*don't intercept string*/).get_bool();
! 116: if(!condition) // ...condition is true
! 117: break;
! 118:
! 119: // write processed body
! 120: r.write_pass_lang(r.process(body));
! 121: }
! 122: }
! 123:
1.7 paf 124: void initialize_root_class(Pool& pool, VClass& vclass) {
1.15 paf 125: // ^if(condition){code-when-true}
126: // ^if(condition){code-when-true}{code-when-false}
127: vclass.add_native_method("if", _if, 2, 3);
128:
129: // ^untaint[as-is|sql|js|html|html-typo]{code}
130: vclass.add_native_method("untaint", _untaint, 2, 2);
1.18 paf 131:
132: // ^process[code]
133: vclass.add_native_method("process", _process, 1, 1);
1.26 paf 134:
135: // ^rem{code}
136: vclass.add_native_method("rem", _rem, 1, 1);
1.27 ! paf 137:
! 138: // ^while(condition){code}
! 139: vclass.add_native_method("while", _while, 2, 2);
1.1 paf 140: }
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