Annotation of parser3/src/classes/root.C, revision 1.55
1.55 ! paf 1: /** @file
! 2: Parser: @b ROOT parser class.
! 3:
1.10 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.55 ! paf 5:
1.12 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.10 paf 7:
1.55 ! paf 8: $Id: root.C,v 1.54 2001/04/03 05:23:37 paf Exp $
1.1 paf 9: */
10:
1.48 paf 11: #include "pa_config_includes.h"
1.29 paf 12: #include <math.h>
1.18 paf 13:
1.46 paf 14: #include "pa_common.h"
1.1 paf 15: #include "pa_request.h"
1.8 paf 16: #include "_root.h"
1.31 paf 17: #include "pa_vint.h"
1.1 paf 18:
1.34 paf 19: static void _if(Request& r, const String& method_name, Array *params) {
20: Value& condition_code=*static_cast<Value *>(params->get(0));
21: // forcing ^if(this param type)
22: r.fail_if_junction_(false, condition_code,
23: method_name, "condition must be junction");
1.36 paf 24:
1.34 paf 25: bool condition=r.process(condition_code,
26: 0/*no name*/,
1.51 paf 27: false/*don't intercept string*/).as_bool();
1.6 paf 28: if(condition) {
1.34 paf 29: Value& then_code=*static_cast<Value *>(params->get(1));
1.52 paf 30: // forcing ^if{this param type}
1.34 paf 31: r.fail_if_junction_(false, then_code,
32: method_name, "then-parameter must be junction");
33: r.write_pass_lang(r.process(then_code));
1.6 paf 34: } else if(params->size()==3) {
1.34 paf 35: Value& else_code=*static_cast<Value *>(params->get(2));
1.52 paf 36: // forcing ^if{this param type}
1.34 paf 37: r.fail_if_junction_(false, else_code,
38: method_name, "else-parameter must be junction");
39: r.write_pass_lang(r.process(else_code));
1.6 paf 40: }
1.1 paf 41: }
42:
1.22 paf 43: static void _untaint(Request& r, const String& method_name, Array *params) {
1.18 paf 44: const String& lang_name=r.process(*static_cast<Value *>(params->get(0))).as_string();
1.15 paf 45: String::Untaint_lang lang=static_cast<String::Untaint_lang>(
1.23 paf 46: untaint_lang_name2enum->get_int(lang_name));
1.15 paf 47: if(!lang)
1.39 paf 48: RTHROW(0, 0,
1.15 paf 49: &lang_name,
1.18 paf 50: "invalid untaint language");
1.15 paf 51:
1.24 paf 52: {
53: Value *vbody=static_cast<Value *>(params->get(1));
54: // forcing ^untaint[]{this param type}
1.26 paf 55: r.fail_if_junction_(false, *vbody,
56: method_name, "body must be junction");
1.24 paf 57:
1.42 paf 58: Temp_lang temp_lang(r, lang); // set temporarily specified ^untaint[language;
59: r.write_pass_lang(r.process(*vbody)); // process marking tainted with that lang
60: }
61: }
62:
63: static void _taint(Request& r, const String& method_name, Array *params) {
1.54 paf 64: String::Untaint_lang lang;
65: if(params->size()==1)
66: lang=String::UL_TAINTED; // mark as simply 'tainted'. useful in table:set
67: else {
68: const String& lang_name=r.process(*static_cast<Value *>(params->get(0))).as_string();
69: lang=static_cast<String::Untaint_lang>(
70: untaint_lang_name2enum->get_int(lang_name));
71: if(!lang)
72: RTHROW(0, 0,
1.42 paf 73: &lang_name,
74: "invalid taint language");
1.54 paf 75: }
1.42 paf 76:
77: {
1.54 paf 78: Value *vbody=static_cast<Value *>(params->get(params->size()-1));
79: // forcing {this param type}
80: r.fail_if_junction_(true, *vbody, method_name, "body must not be junction");
1.42 paf 81:
1.44 paf 82: // set temporarily as-is language
1.54 paf 83: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.44 paf 84: String result(r.pool());
85: result.append(
86: r.process(*vbody).as_string(), // process marking tainted with that lang
1.45 paf 87: lang, true); // force result language to specified
1.42 paf 88: r.write_pass_lang(result);
1.24 paf 89: }
1.15 paf 90: }
91:
1.22 paf 92: static void _process(Request& r, const String& method_name, Array *params) {
1.20 paf 93: // calculate pseudo file name of processed chars
94: // would be something like "/some/file(4) process"
1.18 paf 95: char place[MAX_STRING];
96: #ifndef NO_STRING_ORIGIN
1.25 paf 97: const Origin& origin=method_name.origin();
1.18 paf 98: snprintf(place, MAX_STRING, "%s(%d) %s",
99: origin.file, 1+origin.line,
1.22 paf 100: method_name.cstr());
1.18 paf 101: #else
1.22 paf 102: strncpy(place, MAX_STRING, method_name.cstr());
1.18 paf 103: #endif
104:
1.38 paf 105: VStateless_class& self_class=*r.self->get_class();
1.22 paf 106: {
107: // temporary zero @main so to maybe-replace it in processed code
1.50 paf 108: Temp_method temp_method_main(self_class, *main_method_name, 0);
109: // temporary zero @auto so it wouldn't be auto-called in Request::use_buf
110: Temp_method temp_method_auto(self_class, *auto_method_name, 0);
1.22 paf 111:
1.25 paf 112: // evaluate source to process
113: const String& source=
114: r.process(*static_cast<Value *>(params->get(0))).as_string();
115:
1.22 paf 116: // process source code, append processed methods to 'self' class
117: // maybe-define new @main
118: r.use_buf(source.cstr(), place, &self_class);
119:
120: // maybe-execute @main[]
121: if(const Method *method=self_class.get_method(*main_method_name)) {
122: // execute!
123: r.execute(*method->parser_code);
124: }
1.18 paf 125: }
126: }
127:
1.26 paf 128: static void _rem(Request& r, const String& method_name, Array *params) {
1.27 paf 129: // forcing ^rem{this param type}
1.26 paf 130: r.fail_if_junction_(false, *static_cast<Value *>(params->get(0)),
131: method_name, "body must be junction");
132: }
1.18 paf 133:
1.27 paf 134: static void _while(Request& r, const String& method_name, Array *params) {
135: Value& vcondition=*static_cast<Value *>(params->get(0));
136: // forcing ^while(this param type){}
137: r.fail_if_junction_(false, vcondition,
138: method_name, "condition must be junction");
139:
140: Value& body=*static_cast<Value *>(params->get(1));
141: // forcing ^while(){this param type}
142: r.fail_if_junction_(false, body,
143: method_name, "body must be junction");
144:
145: // while...
146: int endless_loop_count=0;
147: while(true) {
148: if(++endless_loop_count>=1973) // endless loop?
1.39 paf 149: RTHROW(0, 0,
1.27 paf 150: &method_name,
151: "endless loop detected");
152:
153: bool condition=
154: r.process(
155: vcondition,
156: 0/*no name*/,
1.51 paf 157: false/*don't intercept string*/).as_bool();
1.27 paf 158: if(!condition) // ...condition is true
159: break;
160:
161: // write processed body
162: r.write_pass_lang(r.process(body));
163: }
164: }
165:
1.28 paf 166: static void _use(Request& r, const String& method_name, Array *params) {
167: Value& vfile=*static_cast<Value *>(params->get(0));
168: // forcing ^rem{this param type}
169: r.fail_if_junction_(true, vfile,
170: method_name, "file name must not be junction");
171:
1.49 paf 172: r.use_file(r.absolute(vfile.as_string()));
1.28 paf 173: }
174:
1.31 paf 175: static void _for(Request& r, const String& method_name, Array *params) {
176: // ^for[i;from-number;to-number-inclusive]{code}[delim]
177:
178: Pool& pool=r.pool();
179: const String& var_name=r.process(*static_cast<Value *>(params->get(0))).as_string();
1.51 paf 180: int from=(int)r.process(*static_cast<Value *>(params->get(1))).as_double();
181: int to=(int)r.process(*static_cast<Value *>(params->get(2))).as_double();
1.31 paf 182: Value& body_code=*static_cast<Value *>(params->get(3));
183: // forcing ^menu{this param type}
184: r.fail_if_junction_(false, body_code,
185: method_name, "body must be junction");
186: Value *delim_code=params->size()==3+1+1?static_cast<Value *>(params->get(3+1)):0;
187:
188: bool need_delim=false;
1.37 paf 189: VInt *vint=new(pool) VInt(pool, 0);
1.31 paf 190: int endless_loop_count=0;
1.37 paf 191: for(int i=from; i<=to; i++) {
1.31 paf 192: if(++endless_loop_count>=2001) // endless loop?
1.39 paf 193: RTHROW(0, 0,
1.31 paf 194: &method_name,
195: "endless loop detected");
1.37 paf 196: vint->set_int(i);
1.31 paf 197: r.wcontext->put_element(var_name, vint);
198:
199: Value& processed_body=r.process(body_code);
200: if(delim_code) { // delimiter set?
201: const String *string=processed_body.get_string();
202: if(need_delim && string && string->size()) // need delim & iteration produced string?
203: r.write_pass_lang(r.process(*delim_code));
204: need_delim=true;
205: }
206: r.write_pass_lang(processed_body);
207: }
208: }
209:
1.33 paf 210: static void _eval(Request& r, const String& method_name, Array *params) {
211: Value& expr=*static_cast<Value *>(params->get(0));
212: r.fail_if_junction_(false, expr,
213: method_name, "need expression");
214: // evaluate expresion
215: Value *result=r.process(expr,
216: 0/*no name*/,
1.51 paf 217: true/*don't intercept string*/).as_expr_result();
1.33 paf 218: if(params->size()==2) {
219: Value& fmt=*static_cast<Value *>(params->get(1));
220: // forcing ^format[this param type]
221: r.fail_if_junction_(true, fmt,
222: method_name, "fmt must not be junction");
223:
224: Pool& pool=r.pool();
1.41 paf 225: String& string=*new(pool) String(pool);
1.51 paf 226: string.APPEND_CONST(format(pool, result->as_double(), fmt.as_string().cstr()));
1.41 paf 227: result=new(pool) VString(string);
1.33 paf 228: }
1.40 paf 229: r.write_no_lang(*result);
1.33 paf 230: }
1.31 paf 231:
232:
1.29 paf 233: typedef double (*math_one_double_op_func_ptr)(double);
234: static double round(double op) { return floor(op+0.5); }
235: static double sign(double op) { return op > 0 ? 1 : ( op < 0 ? -1 : 0 ); }
236:
1.37 paf 237: static void double_one_op(
1.30 paf 238: Request& r,
239: const String& method_name, Array *params,
240: math_one_double_op_func_ptr func) {
1.29 paf 241: Pool& pool=r.pool();
242: Value& param=*static_cast<Value *>(params->get(0));
243:
244: // forcing ^round(this param type)
245: r.fail_if_junction_(false, param,
246: method_name, "parameter must be expression");
247:
1.51 paf 248: Value& result=*new(pool) VDouble(pool, (*func)(r.process(param).as_double()));
1.40 paf 249: r.write_no_lang(result);
1.29 paf 250: }
251:
252: static void _round(Request& r, const String& method_name, Array *params) {
1.37 paf 253: double_one_op(r, method_name, params, &round);
1.29 paf 254: }
255:
256: static void _floor(Request& r, const String& method_name, Array *params) {
1.37 paf 257: double_one_op(r, method_name, params, &floor);
1.29 paf 258: }
259:
260: static void _ceiling(Request& r, const String& method_name, Array *params) {
1.37 paf 261: double_one_op(r, method_name, params, &ceil);
1.29 paf 262: }
263:
264: static void _abs(Request& r, const String& method_name, Array *params) {
1.37 paf 265: double_one_op(r, method_name, params, &fabs);
1.29 paf 266: }
267:
268: static void _sign(Request& r, const String& method_name, Array *params) {
1.37 paf 269: double_one_op(r, method_name, params, &sign);
1.29 paf 270: }
1.40 paf 271:
272: // initialize
1.29 paf 273:
1.38 paf 274: void initialize_root_class(Pool& pool, VStateless_class& vclass) {
1.15 paf 275: // ^if(condition){code-when-true}
276: // ^if(condition){code-when-true}{code-when-false}
1.53 paf 277: vclass.add_native_method("if", Method::CT_ANY, _if, 2, 3);
1.15 paf 278:
1.42 paf 279: // ^untaint[as-is|uri|sql|js|html|html-typo]{code}
1.53 paf 280: vclass.add_native_method("untaint", Method::CT_ANY, _untaint, 2, 2);
1.42 paf 281:
282: // ^taint[as-is|uri|sql|js|html|html-typo]{code}
1.54 paf 283: vclass.add_native_method("taint", Method::CT_ANY, _taint, 1, 2);
1.18 paf 284:
285: // ^process[code]
1.53 paf 286: vclass.add_native_method("process", Method::CT_ANY, _process, 1, 1);
1.26 paf 287:
288: // ^rem{code}
1.53 paf 289: vclass.add_native_method("rem", Method::CT_ANY, _rem, 1, 1);
1.27 paf 290:
291: // ^while(condition){code}
1.53 paf 292: vclass.add_native_method("while", Method::CT_ANY, _while, 2, 2);
1.28 paf 293:
294: // ^use[file]
1.53 paf 295: vclass.add_native_method("use", Method::CT_ANY, _use, 1, 1);
1.29 paf 296:
1.31 paf 297: // ^for[i;from-number;to-number-inclusive]{code}[delim]
1.53 paf 298: vclass.add_native_method("for", Method::CT_ANY, _for, 3+1, 3+1+1);
1.33 paf 299:
300: // ^eval(expr)
301: // ^eval(expr)[format]
1.53 paf 302: vclass.add_native_method("eval", Method::CT_ANY, _eval, 1, 2);
1.31 paf 303:
1.29 paf 304:
305: // math functions
306:
307: // ^round(expr)
1.53 paf 308: vclass.add_native_method("round", Method::CT_ANY, _round, 1, 1);
1.29 paf 309:
310: // ^floor(expr)
1.53 paf 311: vclass.add_native_method("floor", Method::CT_ANY, _floor, 1, 1);
1.29 paf 312:
313: // ^ceiling(expr)
1.53 paf 314: vclass.add_native_method("ceiling", Method::CT_ANY, _ceiling, 1, 1);
1.29 paf 315:
316: // ^abs(expr)
1.53 paf 317: vclass.add_native_method("abs", Method::CT_ANY, _abs, 1, 1);
1.29 paf 318:
319: // ^sign(expr)
1.53 paf 320: vclass.add_native_method("sign", Method::CT_ANY, _sign, 1, 1);
1.1 paf 321: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to root.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / classes