1 | // -*- c-basic-offset: 2 -*-
|
---|
2 | /*
|
---|
3 | * This file is part of the KDE libraries
|
---|
4 | * Copyright (C) 1999-2002 Harri Porten ([email protected])
|
---|
5 | * Copyright (C) 2001 Peter Kelly ([email protected])
|
---|
6 | * Copyright (C) 2003 Apple Computer, Inc.
|
---|
7 | *
|
---|
8 | * This library is free software; you can redistribute it and/or
|
---|
9 | * modify it under the terms of the GNU Library General Public
|
---|
10 | * License as published by the Free Software Foundation; either
|
---|
11 | * version 2 of the License, or (at your option) any later version.
|
---|
12 | *
|
---|
13 | * This library is distributed in the hope that it will be useful,
|
---|
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
16 | * Library General Public License for more details.
|
---|
17 | *
|
---|
18 | * You should have received a copy of the GNU Library General Public License
|
---|
19 | * along with this library; see the file COPYING.LIB. If not, write to
|
---|
20 | * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
---|
21 | * Boston, MA 02111-1307, USA.
|
---|
22 | *
|
---|
23 | */
|
---|
24 |
|
---|
25 | #include "function.h"
|
---|
26 |
|
---|
27 | #include "internal.h"
|
---|
28 | #include "function_object.h"
|
---|
29 | #include "lexer.h"
|
---|
30 | #include "nodes.h"
|
---|
31 | #include "operations.h"
|
---|
32 | #include "debugger.h"
|
---|
33 | #include "context.h"
|
---|
34 |
|
---|
35 | #include <stdio.h>
|
---|
36 | #include <errno.h>
|
---|
37 | #include <stdlib.h>
|
---|
38 | #include <assert.h>
|
---|
39 | #include <string.h>
|
---|
40 |
|
---|
41 | using namespace KJS;
|
---|
42 |
|
---|
43 | // ----------------------------- FunctionImp ----------------------------------
|
---|
44 |
|
---|
45 | const ClassInfo FunctionImp::info = {"Function", &InternalFunctionImp::info, 0, 0};
|
---|
46 |
|
---|
47 | namespace KJS {
|
---|
48 | class Parameter {
|
---|
49 | public:
|
---|
50 | Parameter(const Identifier &n) : name(n), next(0L) { }
|
---|
51 | ~Parameter() { delete next; }
|
---|
52 | Identifier name;
|
---|
53 | Parameter *next;
|
---|
54 | };
|
---|
55 | };
|
---|
56 |
|
---|
57 | FunctionImp::FunctionImp(ExecState *exec, const Identifier &n)
|
---|
58 | : InternalFunctionImp(
|
---|
59 | static_cast<FunctionPrototypeImp*>(exec->interpreter()->builtinFunctionPrototype().imp())
|
---|
60 | ), param(0L), ident(n)
|
---|
61 | {
|
---|
62 | //fprintf(stderr,"FunctionImp::FunctionImp this=%p\n");
|
---|
63 | }
|
---|
64 |
|
---|
65 | FunctionImp::~FunctionImp()
|
---|
66 | {
|
---|
67 | delete param;
|
---|
68 | }
|
---|
69 |
|
---|
70 | bool FunctionImp::implementsCall() const
|
---|
71 | {
|
---|
72 | return true;
|
---|
73 | }
|
---|
74 |
|
---|
75 | Value FunctionImp::call(ExecState *exec, Object &thisObj, const List &args)
|
---|
76 | {
|
---|
77 | Object &globalObj = exec->interpreter()->globalObject();
|
---|
78 |
|
---|
79 | Debugger *dbg = exec->interpreter()->imp()->debugger();
|
---|
80 | int sid = -1;
|
---|
81 | int lineno = -1;
|
---|
82 | if (dbg) {
|
---|
83 | if (inherits(&DeclaredFunctionImp::info)) {
|
---|
84 | sid = static_cast<DeclaredFunctionImp*>(this)->body->sourceId();
|
---|
85 | lineno = static_cast<DeclaredFunctionImp*>(this)->body->firstLine();
|
---|
86 | }
|
---|
87 |
|
---|
88 | Object func(this);
|
---|
89 | bool cont = dbg->callEvent(exec,sid,lineno,func,args);
|
---|
90 | if (!cont) {
|
---|
91 | dbg->imp()->abort();
|
---|
92 | return Undefined();
|
---|
93 | }
|
---|
94 | }
|
---|
95 |
|
---|
96 | // enter a new execution context
|
---|
97 | ContextImp ctx(globalObj, exec->interpreter()->imp(), thisObj, codeType(),
|
---|
98 | exec->context().imp(), this, &args);
|
---|
99 | ExecState newExec(exec->interpreter(), &ctx);
|
---|
100 | newExec.setException(exec->exception()); // could be null
|
---|
101 |
|
---|
102 | // assign user supplied arguments to parameters
|
---|
103 | processParameters(&newExec, args);
|
---|
104 | // add variable declarations (initialized to undefined)
|
---|
105 | processVarDecls(&newExec);
|
---|
106 |
|
---|
107 | Completion comp = execute(&newExec);
|
---|
108 |
|
---|
109 | // if an exception occured, propogate it back to the previous execution object
|
---|
110 | if (newExec.hadException())
|
---|
111 | exec->setException(newExec.exception());
|
---|
112 |
|
---|
113 | #ifdef KJS_VERBOSE
|
---|
114 | if (comp.complType() == Throw)
|
---|
115 | printInfo(exec,"throwing", comp.value());
|
---|
116 | else if (comp.complType() == ReturnValue)
|
---|
117 | printInfo(exec,"returning", comp.value());
|
---|
118 | else
|
---|
119 | fprintf(stderr, "returning: undefined\n");
|
---|
120 | #endif
|
---|
121 |
|
---|
122 | if (dbg) {
|
---|
123 | Object func(this);
|
---|
124 | int cont = dbg->returnEvent(exec,sid,lineno,func);
|
---|
125 | if (!cont) {
|
---|
126 | dbg->imp()->abort();
|
---|
127 | return Undefined();
|
---|
128 | }
|
---|
129 | }
|
---|
130 |
|
---|
131 | if (comp.complType() == Throw) {
|
---|
132 | exec->setException(comp.value());
|
---|
133 | return comp.value();
|
---|
134 | }
|
---|
135 | else if (comp.complType() == ReturnValue)
|
---|
136 | return comp.value();
|
---|
137 | else
|
---|
138 | return Undefined();
|
---|
139 | }
|
---|
140 |
|
---|
141 | void FunctionImp::addParameter(const Identifier &n)
|
---|
142 | {
|
---|
143 | Parameter **p = ¶m;
|
---|
144 | while (*p)
|
---|
145 | p = &(*p)->next;
|
---|
146 |
|
---|
147 | *p = new Parameter(n);
|
---|
148 | }
|
---|
149 |
|
---|
150 | UString FunctionImp::parameterString() const
|
---|
151 | {
|
---|
152 | UString s;
|
---|
153 | const Parameter *p = param;
|
---|
154 | while (p) {
|
---|
155 | if (!s.isEmpty())
|
---|
156 | s += ", ";
|
---|
157 | s += p->name.ustring();
|
---|
158 | p = p->next;
|
---|
159 | }
|
---|
160 |
|
---|
161 | return s;
|
---|
162 | }
|
---|
163 |
|
---|
164 |
|
---|
165 | // ECMA 10.1.3q
|
---|
166 | void FunctionImp::processParameters(ExecState *exec, const List &args)
|
---|
167 | {
|
---|
168 | Object variable = exec->context().imp()->variableObject();
|
---|
169 |
|
---|
170 | #ifdef KJS_VERBOSE
|
---|
171 | fprintf(stderr, "---------------------------------------------------\n"
|
---|
172 | "processing parameters for %s call\n",
|
---|
173 | name().isEmpty() ? "(internal)" : name().ascii());
|
---|
174 | #endif
|
---|
175 |
|
---|
176 | if (param) {
|
---|
177 | ListIterator it = args.begin();
|
---|
178 | Parameter *p = param;
|
---|
179 | while (p) {
|
---|
180 | if (it != args.end()) {
|
---|
181 | #ifdef KJS_VERBOSE
|
---|
182 | fprintf(stderr, "setting parameter %s ", p->name.ascii());
|
---|
183 | printInfo(exec,"to", *it);
|
---|
184 | #endif
|
---|
185 | variable.put(exec, p->name, *it);
|
---|
186 | it++;
|
---|
187 | } else
|
---|
188 | variable.put(exec, p->name, Undefined());
|
---|
189 | p = p->next;
|
---|
190 | }
|
---|
191 | }
|
---|
192 | #ifdef KJS_VERBOSE
|
---|
193 | else {
|
---|
194 | for (int i = 0; i < args.size(); i++)
|
---|
195 | printInfo(exec,"setting argument", args[i]);
|
---|
196 | }
|
---|
197 | #endif
|
---|
198 | }
|
---|
199 |
|
---|
200 | void FunctionImp::processVarDecls(ExecState */*exec*/)
|
---|
201 | {
|
---|
202 | }
|
---|
203 |
|
---|
204 | Value FunctionImp::get(ExecState *exec, const Identifier &propertyName) const
|
---|
205 | {
|
---|
206 | // Find the arguments from the closest context.
|
---|
207 | if (propertyName == argumentsPropertyName) {
|
---|
208 | ContextImp *context = exec->_context;
|
---|
209 | while (context) {
|
---|
210 | if (context->function() == this)
|
---|
211 | return static_cast<ActivationImp *>
|
---|
212 | (context->activationObject())->get(exec, propertyName);
|
---|
213 | context = context->callingContext();
|
---|
214 | }
|
---|
215 | return Undefined();
|
---|
216 | }
|
---|
217 |
|
---|
218 | // Compute length of parameters.
|
---|
219 | if (propertyName == lengthPropertyName) {
|
---|
220 | const Parameter * p = param;
|
---|
221 | int count = 0;
|
---|
222 | while (p) {
|
---|
223 | ++count;
|
---|
224 | p = p->next;
|
---|
225 | }
|
---|
226 | return Number(count);
|
---|
227 | }
|
---|
228 |
|
---|
229 | return InternalFunctionImp::get(exec, propertyName);
|
---|
230 | }
|
---|
231 |
|
---|
232 | void FunctionImp::put(ExecState *exec, const Identifier &propertyName, const Value &value, int attr)
|
---|
233 | {
|
---|
234 | if (propertyName == argumentsPropertyName || propertyName == lengthPropertyName)
|
---|
235 | return;
|
---|
236 | InternalFunctionImp::put(exec, propertyName, value, attr);
|
---|
237 | }
|
---|
238 |
|
---|
239 | bool FunctionImp::hasProperty(ExecState *exec, const Identifier &propertyName) const
|
---|
240 | {
|
---|
241 | if (propertyName == argumentsPropertyName || propertyName == lengthPropertyName)
|
---|
242 | return true;
|
---|
243 | return InternalFunctionImp::hasProperty(exec, propertyName);
|
---|
244 | }
|
---|
245 |
|
---|
246 | bool FunctionImp::deleteProperty(ExecState *exec, const Identifier &propertyName)
|
---|
247 | {
|
---|
248 | if (propertyName == argumentsPropertyName || propertyName == lengthPropertyName)
|
---|
249 | return false;
|
---|
250 | return InternalFunctionImp::deleteProperty(exec, propertyName);
|
---|
251 | }
|
---|
252 |
|
---|
253 | // ------------------------------ DeclaredFunctionImp --------------------------
|
---|
254 |
|
---|
255 | // ### is "Function" correct here?
|
---|
256 | const ClassInfo DeclaredFunctionImp::info = {"Function", &FunctionImp::info, 0, 0};
|
---|
257 |
|
---|
258 | DeclaredFunctionImp::DeclaredFunctionImp(ExecState *exec, const Identifier &n,
|
---|
259 | FunctionBodyNode *b, const ScopeChain &sc)
|
---|
260 | : FunctionImp(exec,n), body(b)
|
---|
261 | {
|
---|
262 | Value protect(this);
|
---|
263 | body->ref();
|
---|
264 | setScope(sc);
|
---|
265 | }
|
---|
266 |
|
---|
267 | DeclaredFunctionImp::~DeclaredFunctionImp()
|
---|
268 | {
|
---|
269 | if ( body->deref() )
|
---|
270 | delete body;
|
---|
271 | }
|
---|
272 |
|
---|
273 | bool DeclaredFunctionImp::implementsConstruct() const
|
---|
274 | {
|
---|
275 | return true;
|
---|
276 | }
|
---|
277 |
|
---|
278 | // ECMA 13.2.2 [[Construct]]
|
---|
279 | Object DeclaredFunctionImp::construct(ExecState *exec, const List &args)
|
---|
280 | {
|
---|
281 | Object proto;
|
---|
282 | Value p = get(exec,prototypePropertyName);
|
---|
283 | if (p.type() == ObjectType)
|
---|
284 | proto = Object(static_cast<ObjectImp*>(p.imp()));
|
---|
285 | else
|
---|
286 | proto = exec->interpreter()->builtinObjectPrototype();
|
---|
287 |
|
---|
288 | Object obj(new ObjectImp(proto));
|
---|
289 |
|
---|
290 | Value res = call(exec,obj,args);
|
---|
291 |
|
---|
292 | if (res.type() == ObjectType)
|
---|
293 | return Object::dynamicCast(res);
|
---|
294 | else
|
---|
295 | return obj;
|
---|
296 | }
|
---|
297 |
|
---|
298 | Completion DeclaredFunctionImp::execute(ExecState *exec)
|
---|
299 | {
|
---|
300 | Completion result = body->execute(exec);
|
---|
301 |
|
---|
302 | if (result.complType() == Throw || result.complType() == ReturnValue)
|
---|
303 | return result;
|
---|
304 | return Completion(Normal, Undefined()); // TODO: or ReturnValue ?
|
---|
305 | }
|
---|
306 |
|
---|
307 | void DeclaredFunctionImp::processVarDecls(ExecState *exec)
|
---|
308 | {
|
---|
309 | body->processVarDecls(exec);
|
---|
310 | }
|
---|
311 |
|
---|
312 | // ------------------------------ ArgumentsImp ---------------------------------
|
---|
313 |
|
---|
314 | const ClassInfo ArgumentsImp::info = {"Arguments", 0, 0, 0};
|
---|
315 |
|
---|
316 | // ECMA 10.1.8
|
---|
317 | ArgumentsImp::ArgumentsImp(ExecState *exec, FunctionImp *func)
|
---|
318 | : ArrayInstanceImp(exec->interpreter()->builtinObjectPrototype().imp(), 0)
|
---|
319 | {
|
---|
320 | Value protect(this);
|
---|
321 | putDirect(calleePropertyName, func, DontEnum);
|
---|
322 | }
|
---|
323 |
|
---|
324 | ArgumentsImp::ArgumentsImp(ExecState *exec, FunctionImp *func, const List &args)
|
---|
325 | : ArrayInstanceImp(exec->interpreter()->builtinObjectPrototype().imp(), args)
|
---|
326 | {
|
---|
327 | Value protect(this);
|
---|
328 | putDirect(calleePropertyName, func, DontEnum);
|
---|
329 | }
|
---|
330 |
|
---|
331 | // ------------------------------ ActivationImp --------------------------------
|
---|
332 |
|
---|
333 | const ClassInfo ActivationImp::info = {"Activation", 0, 0, 0};
|
---|
334 |
|
---|
335 | // ECMA 10.1.6
|
---|
336 | ActivationImp::ActivationImp(FunctionImp *function, const List &arguments)
|
---|
337 | : _function(function), _arguments(true), _argumentsObject(0)
|
---|
338 | {
|
---|
339 | _arguments = arguments.copy();
|
---|
340 | // FIXME: Do we need to support enumerating the arguments property?
|
---|
341 | }
|
---|
342 |
|
---|
343 | Value ActivationImp::get(ExecState *exec, const Identifier &propertyName) const
|
---|
344 | {
|
---|
345 | if (propertyName == argumentsPropertyName) {
|
---|
346 | if (!_argumentsObject)
|
---|
347 | createArgumentsObject(exec);
|
---|
348 | return Value(_argumentsObject);
|
---|
349 | }
|
---|
350 | return ObjectImp::get(exec, propertyName);
|
---|
351 | }
|
---|
352 |
|
---|
353 | void ActivationImp::put(ExecState *exec, const Identifier &propertyName, const Value &value, int attr)
|
---|
354 | {
|
---|
355 | if (propertyName == argumentsPropertyName) {
|
---|
356 | // FIXME: Do we need to allow overwriting this?
|
---|
357 | return;
|
---|
358 | }
|
---|
359 | ObjectImp::put(exec, propertyName, value, attr);
|
---|
360 | }
|
---|
361 |
|
---|
362 | bool ActivationImp::hasProperty(ExecState *exec, const Identifier &propertyName) const
|
---|
363 | {
|
---|
364 | if (propertyName == argumentsPropertyName)
|
---|
365 | return true;
|
---|
366 | return ObjectImp::hasProperty(exec, propertyName);
|
---|
367 | }
|
---|
368 |
|
---|
369 | bool ActivationImp::deleteProperty(ExecState *exec, const Identifier &propertyName)
|
---|
370 | {
|
---|
371 | if (propertyName == argumentsPropertyName)
|
---|
372 | return false;
|
---|
373 | return ObjectImp::deleteProperty(exec, propertyName);
|
---|
374 | }
|
---|
375 |
|
---|
376 | void ActivationImp::mark()
|
---|
377 | {
|
---|
378 | if (_function && !_function->marked())
|
---|
379 | _function->mark();
|
---|
380 | _arguments.mark();
|
---|
381 | if (_argumentsObject && !_argumentsObject->marked())
|
---|
382 | _argumentsObject->mark();
|
---|
383 | ObjectImp::mark();
|
---|
384 | }
|
---|
385 |
|
---|
386 | void ActivationImp::createArgumentsObject(ExecState *exec) const
|
---|
387 | {
|
---|
388 | _argumentsObject = new ArgumentsImp(exec, _function, _arguments);
|
---|
389 | }
|
---|
390 |
|
---|
391 | // ------------------------------ GlobalFunc -----------------------------------
|
---|
392 |
|
---|
393 |
|
---|
394 | GlobalFuncImp::GlobalFuncImp(ExecState *exec, FunctionPrototypeImp *funcProto, int i, int len)
|
---|
395 | : InternalFunctionImp(funcProto), id(i)
|
---|
396 | {
|
---|
397 | Value protect(this);
|
---|
398 | putDirect(lengthPropertyName, len, DontDelete|ReadOnly|DontEnum);
|
---|
399 | }
|
---|
400 |
|
---|
401 | CodeType GlobalFuncImp::codeType() const
|
---|
402 | {
|
---|
403 | return id == Eval ? EvalCode : codeType();
|
---|
404 | }
|
---|
405 |
|
---|
406 | bool GlobalFuncImp::implementsCall() const
|
---|
407 | {
|
---|
408 | return true;
|
---|
409 | }
|
---|
410 |
|
---|
411 | static Value encode(ExecState *exec, const List &args, const char *do_not_escape)
|
---|
412 | {
|
---|
413 | UString r = "", s, str = args[0].toString(exec);
|
---|
414 | CString cstr = str.UTF8String();
|
---|
415 | const char *p = cstr.c_str();
|
---|
416 | for (int k = 0; k < cstr.size(); k++, p++) {
|
---|
417 | char c = *p;
|
---|
418 | if (c && strchr(do_not_escape, c)) {
|
---|
419 | r.append(c);
|
---|
420 | } else {
|
---|
421 | char tmp[4];
|
---|
422 | sprintf(tmp, "%%%02X", (unsigned char)c);
|
---|
423 | r += tmp;
|
---|
424 | }
|
---|
425 | }
|
---|
426 | return String(r);
|
---|
427 | }
|
---|
428 |
|
---|
429 | static Value decode(ExecState *exec, const List &args, const char *do_not_unescape, bool strict)
|
---|
430 | {
|
---|
431 | UString s = "", str = args[0].toString(exec);
|
---|
432 | int k = 0, len = str.size();
|
---|
433 | const UChar *d = str.data();
|
---|
434 | UChar u;
|
---|
435 | while (k < len) {
|
---|
436 | const UChar *p = d + k;
|
---|
437 | UChar c = *p;
|
---|
438 | if (c == '%') {
|
---|
439 | int charLen = 0;
|
---|
440 | if (k <= len - 3 && isxdigit(p[1].uc) && isxdigit(p[2].uc)) {
|
---|
441 | const char b0 = Lexer::convertHex(p[1].uc, p[2].uc);
|
---|
442 | const int sequenceLen = UTF8SequenceLength(b0);
|
---|
443 | if (sequenceLen != 0 && k <= len - sequenceLen * 3) {
|
---|
444 | charLen = sequenceLen * 3;
|
---|
445 | char sequence[5];
|
---|
446 | sequence[0] = b0;
|
---|
447 | for (int i = 1; i < sequenceLen; ++i) {
|
---|
448 | const UChar *q = p + i * 3;
|
---|
449 | if (q[0] == '%' && isxdigit(q[1].uc) && isxdigit(q[2].uc))
|
---|
450 | sequence[i] = Lexer::convertHex(q[1].uc, q[2].uc);
|
---|
451 | else {
|
---|
452 | charLen = 0;
|
---|
453 | break;
|
---|
454 | }
|
---|
455 | }
|
---|
456 | if (charLen != 0) {
|
---|
457 | sequence[sequenceLen] = 0;
|
---|
458 | const int character = decodeUTF8Sequence(sequence);
|
---|
459 | if (character < 0 || character >= 0x110000) {
|
---|
460 | charLen = 0;
|
---|
461 | } else if (character >= 0x10000) {
|
---|
462 | // Convert to surrogate pair.
|
---|
463 | s.append(static_cast<unsigned short>(0xD800 | ((character - 0x10000) >> 10)));
|
---|
464 | u = static_cast<unsigned short>(0xDC00 | ((character - 0x10000) & 0x3FF));
|
---|
465 | } else {
|
---|
466 | u = static_cast<unsigned short>(character);
|
---|
467 | }
|
---|
468 | }
|
---|
469 | }
|
---|
470 | }
|
---|
471 | if (charLen == 0) {
|
---|
472 | if (strict) {
|
---|
473 | Object error = Error::create(exec, URIError);
|
---|
474 | exec->setException(error);
|
---|
475 | return error;
|
---|
476 | }
|
---|
477 | // The only case where we don't use "strict" mode is the "unescape" function.
|
---|
478 | // For that, it's good to support the wonky "%u" syntax for compatibility with WinIE.
|
---|
479 | if (k <= len - 6 && p[1] == 'u'
|
---|
480 | && isxdigit(p[2].uc) && isxdigit(p[3].uc)
|
---|
481 | && isxdigit(p[4].uc) && isxdigit(p[5].uc)) {
|
---|
482 | charLen = 6;
|
---|
483 | u = Lexer::convertUnicode(p[2].uc, p[3].uc, p[4].uc, p[5].uc);
|
---|
484 | }
|
---|
485 | }
|
---|
486 | if (charLen && (u.uc == 0 || u.uc >= 128 || !strchr(do_not_unescape, u.low()))) {
|
---|
487 | c = u;
|
---|
488 | k += charLen - 1;
|
---|
489 | }
|
---|
490 | }
|
---|
491 | k++;
|
---|
492 | s.append(c);
|
---|
493 | }
|
---|
494 | return String(s);
|
---|
495 | }
|
---|
496 |
|
---|
497 | Value GlobalFuncImp::call(ExecState *exec, Object &/*thisObj*/, const List &args)
|
---|
498 | {
|
---|
499 | Value res;
|
---|
500 |
|
---|
501 | static const char do_not_escape[] =
|
---|
502 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
---|
503 | "abcdefghijklmnopqrstuvwxyz"
|
---|
504 | "0123456789"
|
---|
505 | "*+-./@_";
|
---|
506 | static const char do_not_escape_when_encoding_URI_component[] =
|
---|
507 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
---|
508 | "abcdefghijklmnopqrstuvwxyz"
|
---|
509 | "0123456789"
|
---|
510 | "!'()*-._~";
|
---|
511 | static const char do_not_escape_when_encoding_URI[] =
|
---|
512 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
---|
513 | "abcdefghijklmnopqrstuvwxyz"
|
---|
514 | "0123456789"
|
---|
515 | "!#$&'()*+,-./:;=?@_~";
|
---|
516 | static const char do_not_unescape_when_decoding_URI[] =
|
---|
517 | "#$&+,/:;=?@";
|
---|
518 |
|
---|
519 | switch (id) {
|
---|
520 | case Eval: { // eval()
|
---|
521 | Value x = args[0];
|
---|
522 | if (x.type() != StringType)
|
---|
523 | return x;
|
---|
524 | else {
|
---|
525 | UString s = x.toString(exec);
|
---|
526 |
|
---|
527 | int sid;
|
---|
528 | int errLine;
|
---|
529 | UString errMsg;
|
---|
530 | ProgramNode *progNode = Parser::parse(s.data(),s.size(),&sid,&errLine,&errMsg);
|
---|
531 |
|
---|
532 | // no program node means a syntax occurred
|
---|
533 | if (!progNode) {
|
---|
534 | Object err = Error::create(exec,SyntaxError,errMsg.ascii(),errLine);
|
---|
535 | err.put(exec,"sid",Number(sid));
|
---|
536 | exec->setException(err);
|
---|
537 | return err;
|
---|
538 | }
|
---|
539 |
|
---|
540 | progNode->ref();
|
---|
541 |
|
---|
542 | // enter a new execution context
|
---|
543 | Object thisVal(Object::dynamicCast(exec->context().thisValue()));
|
---|
544 | ContextImp ctx(exec->interpreter()->globalObject(),
|
---|
545 | exec->interpreter()->imp(),
|
---|
546 | thisVal,
|
---|
547 | EvalCode,
|
---|
548 | exec->context().imp());
|
---|
549 |
|
---|
550 | ExecState newExec(exec->interpreter(), &ctx);
|
---|
551 | newExec.setException(exec->exception()); // could be null
|
---|
552 |
|
---|
553 | // execute the code
|
---|
554 | Completion c = progNode->execute(&newExec);
|
---|
555 |
|
---|
556 | // if an exception occured, propogate it back to the previous execution object
|
---|
557 | if (newExec.hadException())
|
---|
558 | exec->setException(newExec.exception());
|
---|
559 |
|
---|
560 | if ( progNode->deref() )
|
---|
561 | delete progNode;
|
---|
562 | if (c.complType() == ReturnValue)
|
---|
563 | return c.value();
|
---|
564 | // ### setException() on throw?
|
---|
565 | else if (c.complType() == Normal) {
|
---|
566 | if (c.isValueCompletion())
|
---|
567 | return c.value();
|
---|
568 | else
|
---|
569 | return Undefined();
|
---|
570 | } else {
|
---|
571 | return Undefined();
|
---|
572 | }
|
---|
573 | }
|
---|
574 | break;
|
---|
575 | }
|
---|
576 | case ParseInt: {
|
---|
577 | CString cstr = args[0].toString(exec).cstring();
|
---|
578 | int radix = args[1].toInt32(exec);
|
---|
579 |
|
---|
580 | char* endptr;
|
---|
581 | errno = 0;
|
---|
582 | #ifdef HAVE_FUNC_STRTOLL
|
---|
583 | long long llValue = strtoll(cstr.c_str(), &endptr, radix);
|
---|
584 | double value = llValue;
|
---|
585 | #else
|
---|
586 | long value = strtol(cstr.c_str(), &endptr, radix);
|
---|
587 | #endif
|
---|
588 | if (errno != 0 || endptr == cstr.c_str())
|
---|
589 | res = Number(NaN);
|
---|
590 | else
|
---|
591 | res = Number(value);
|
---|
592 | break;
|
---|
593 | }
|
---|
594 | case ParseFloat:
|
---|
595 | res = Number(args[0].toString(exec).toDouble( true /*tolerant*/ ));
|
---|
596 | break;
|
---|
597 | case IsNaN:
|
---|
598 | res = Boolean(isNaN(args[0].toNumber(exec)));
|
---|
599 | break;
|
---|
600 | case IsFinite: {
|
---|
601 | double n = args[0].toNumber(exec);
|
---|
602 | res = Boolean(!isNaN(n) && !isInf(n));
|
---|
603 | break;
|
---|
604 | }
|
---|
605 | case DecodeURI:
|
---|
606 | res = decode(exec, args, do_not_unescape_when_decoding_URI, true);
|
---|
607 | break;
|
---|
608 | case DecodeURIComponent:
|
---|
609 | res = decode(exec, args, "", true);
|
---|
610 | break;
|
---|
611 | case EncodeURI:
|
---|
612 | res = encode(exec, args, do_not_escape_when_encoding_URI);
|
---|
613 | break;
|
---|
614 | case EncodeURIComponent:
|
---|
615 | res = encode(exec, args, do_not_escape_when_encoding_URI_component);
|
---|
616 | break;
|
---|
617 | case Escape:
|
---|
618 | res = encode(exec, args, do_not_escape);
|
---|
619 | break;
|
---|
620 | case UnEscape:
|
---|
621 | res = decode(exec, args, "", false);
|
---|
622 | break;
|
---|
623 | #ifndef NDEBUG
|
---|
624 | case KJSPrint:
|
---|
625 | puts(args[0].toString(exec).ascii());
|
---|
626 | break;
|
---|
627 | #endif
|
---|
628 | }
|
---|
629 |
|
---|
630 | return res;
|
---|
631 | }
|
---|