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#include "function.h"
00026
00027
#include "internal.h"
00028
#include "function_object.h"
00029
#include "lexer.h"
00030
#include "nodes.h"
00031
#include "operations.h"
00032
#include "debugger.h"
00033
#include "context.h"
00034
00035
#include <stdio.h>
00036
#include <stdlib.h>
00037
#include <assert.h>
00038
#include <string.h>
00039
#include <errno.h>
00040
#include <math.h>
00041
#include <ctype.h>
00042
00043
using namespace KJS;
00044
00045
00046
00047
00048
UString encodeURI(
ExecState *exec,
UString string,
UString unescapedSet)
00049 {
00050
char hexdigits[] =
"0123456789ABCDEF";
00051
int encbufAlloc = 2;
00052
UChar *encbuf = (
UChar*)malloc(encbufAlloc*
sizeof(
UChar));
00053
int encbufLen = 0;
00054
00055
for (
int k = 0; k < string.
size(); k++) {
00056
00057
UChar C = string[k];
00058
if (unescapedSet.
find(C) >= 0) {
00059
if (encbufLen+1 >= encbufAlloc)
00060 encbuf = (
UChar*)realloc(encbuf,(encbufAlloc *= 2)*
sizeof(
UChar));
00061 encbuf[encbufLen++] = C;
00062 }
00063
else {
00064
unsigned char octets[4];
00065
int octets_len = 0;
00066
if (C.
uc <= 0x007F) {
00067
unsigned short zzzzzzz = C.
uc;
00068 octets[0] = zzzzzzz;
00069 octets_len = 1;
00070 }
00071
else if (C.
uc <= 0x07FF) {
00072
unsigned short zzzzzz = C.
uc & 0x3F;
00073
unsigned short yyyyy = (C.
uc >> 6) & 0x1F;
00074 octets[0] = 0xC0 | yyyyy;
00075 octets[1] = 0x80 | zzzzzz;
00076 octets_len = 2;
00077 }
00078
else if (C.
uc >= 0xD800 && C.
uc <= 0xDBFF) {
00079
00080
if (k == string.size()) {
00081
Object err =
Error::create(exec,URIError);
00082 exec->
setException(err);
00083 free(encbuf);
00084
return UString();
00085 }
00086
00087
unsigned short Cnext =
UChar(string[++k]).uc;
00088
00089
if (Cnext < 0xDC00 || Cnext > 0xDFFF) {
00090
Object err =
Error::create(exec,URIError);
00091 exec->
setException(err);
00092 free(encbuf);
00093
return UString();
00094 }
00095
00096
unsigned short zzzzzz = Cnext & 0x3F;
00097
unsigned short yyyy = (Cnext >> 6) & 0x0F;
00098
unsigned short xx = C.
uc & 0x03;
00099
unsigned short wwww = (C.
uc >> 2) & 0x0F;
00100
unsigned short vvvv = (C.
uc >> 6) & 0x0F;
00101
unsigned short uuuuu = vvvv+1;
00102 octets[0] = 0xF0 | (uuuuu >> 2);
00103 octets[1] = 0x80 | ((uuuuu & 0x03) << 4) | wwww;
00104 octets[2] = 0x80 | (xx << 4) | yyyy;
00105 octets[3] = 0x80 | zzzzzz;
00106 octets_len = 4;
00107 }
00108
else if (C.
uc >= 0xDC00 && C.
uc <= 0xDFFF) {
00109
Object err =
Error::create(exec,URIError);
00110 exec->
setException(err);
00111 free(encbuf);
00112
return UString();
00113 }
00114
else {
00115
00116
unsigned short zzzzzz = C.
uc & 0x3F;
00117
unsigned short yyyyyy = (C.
uc >> 6) & 0x3F;
00118
unsigned short xxxx = (C.
uc >> 12) & 0x0F;
00119 octets[0] = 0xE0 | xxxx;
00120 octets[1] = 0x80 | yyyyyy;
00121 octets[2] = 0x80 | zzzzzz;
00122 octets_len = 3;
00123 }
00124
00125
while (encbufLen+3*octets_len >= encbufAlloc)
00126 encbuf = (
UChar*)realloc(encbuf,(encbufAlloc *= 2)*
sizeof(
UChar));
00127
00128
for (
int j = 0; j < octets_len; j++) {
00129 encbuf[encbufLen++] =
'%';
00130 encbuf[encbufLen++] = hexdigits[octets[j] >> 4];
00131 encbuf[encbufLen++] = hexdigits[octets[j] & 0x0F];
00132 }
00133 }
00134 }
00135
00136
UString encoded(encbuf,encbufLen);
00137 free(encbuf);
00138
return encoded;
00139 }
00140
00141
bool decodeHex(
UChar hi,
UChar lo,
unsigned short *val)
00142 {
00143 *val = 0;
00144
if (hi.
uc >=
'0' && hi.
uc <=
'9')
00145 *val = (hi.
uc-
'0') << 4;
00146
else if (hi.
uc >=
'a' && hi.
uc <=
'f')
00147 *val = 10+(hi.
uc-
'a') << 4;
00148
else if (hi.
uc >=
'A' && hi.
uc <=
'F')
00149 *val = 10+(hi.
uc-
'A') << 4;
00150
else
00151
return false;
00152
00153
if (lo.
uc >=
'0' && lo.
uc <=
'9')
00154 *val |= (lo.
uc-
'0');
00155
else if (lo.
uc >=
'a' && lo.
uc <=
'f')
00156 *val |= 10+(lo.
uc-
'a');
00157
else if (lo.
uc >=
'A' && lo.
uc <=
'F')
00158 *val |= 10+(lo.
uc-
'A');
00159
else
00160
return false;
00161
00162
return true;
00163 }
00164
00165
UString decodeURI(
ExecState *exec,
UString string,
UString reservedSet)
00166 {
00167
int decbufAlloc = 2;
00168
UChar *decbuf = (
UChar*)malloc(decbufAlloc*
sizeof(
UChar));
00169
int decbufLen = 0;
00170
00171
for (
int k = 0; k < string.
size(); k++) {
00172
UChar C = string[k];
00173
00174
if (C !=
UChar(
'%')) {
00175
00176
if (decbufLen+1 >= decbufAlloc)
00177 decbuf = (
UChar*)realloc(decbuf,(decbufAlloc *= 2)*
sizeof(
UChar));
00178 decbuf[decbufLen++] = C;
00179
continue;
00180 }
00181
00182
00183
int start = k;
00184
if (k+2 >= string.size()) {
00185
Object err =
Error::create(exec,URIError);
00186 exec->
setException(err);
00187 free(decbuf);
00188
return UString();
00189 }
00190
00191
unsigned short B;
00192
if (!decodeHex(string[k+1],string[k+2],&B)) {
00193
Object err =
Error::create(exec,URIError);
00194 exec->
setException(err);
00195 free(decbuf);
00196
return UString();
00197 }
00198
00199 k += 2;
00200
if ((B & 0x80) == 0) {
00201
00202 C = B;
00203 }
00204
else {
00205
00206
int n = 0;
00207
while (((B << n) & 0x80) != 0)
00208 n++;
00209
00210
if (n < 2 || n > 4) {
00211
Object err =
Error::create(exec,URIError);
00212 exec->
setException(err);
00213 free(decbuf);
00214
return UString();
00215 }
00216
00217
if (k+3*(n-1) >= string.size()) {
00218
Object err =
Error::create(exec,URIError);
00219 exec->
setException(err);
00220 free(decbuf);
00221
return UString();
00222 }
00223
00224
unsigned short octets[4];
00225 octets[0] = B;
00226
for (
int j = 1; j < n; j++) {
00227 k++;
00228
if ((
UChar(string[k]) !=
UChar(
'%')) ||
00229 !decodeHex(string[k+1],string[k+2],&B) ||
00230 ((B & 0xC0) != 0x80)) {
00231
Object err =
Error::create(exec,URIError);
00232 exec->
setException(err);
00233 free(decbuf);
00234
return UString();
00235 }
00236
00237 k += 2;
00238 octets[j] = B;
00239 }
00240
00241
00242
unsigned long V;
00243
if (n == 2) {
00244
unsigned long yyyyy = octets[0] & 0x1F;
00245
unsigned long zzzzzz = octets[1] & 0x3F;
00246 V = (yyyyy << 6) | zzzzzz;
00247 C =
UChar((
unsigned short)V);
00248 }
00249
else if (n == 3) {
00250
unsigned long xxxx = octets[0] & 0x0F;
00251
unsigned long yyyyyy = octets[1] & 0x3F;
00252
unsigned long zzzzzz = octets[2] & 0x3F;
00253 V = (xxxx << 12) | (yyyyyy << 6) | zzzzzz;
00254 C =
UChar((
unsigned short)V);
00255 }
00256
else {
00257 assert(n == 4);
00258
unsigned long uuuuu = ((octets[0] & 0x07) << 2) | ((octets[1] >> 4) & 0x03);
00259
unsigned long vvvv = uuuuu-1;
00260
unsigned long wwww = octets[1] & 0x0F;
00261
unsigned long xx = (octets[2] >> 4) & 0x03;
00262
unsigned long yyyy = octets[2] & 0x0F;
00263
unsigned long zzzzzz = octets[3] & 0x3F;
00264
unsigned short H = 0xD800 | (vvvv << 6) | (wwww << 2) | xx;
00265
unsigned short L = 0xDC00 | (yyyy << 6) | zzzzzz;
00266 decbuf[decbufLen++] =
UChar(H);
00267 decbuf[decbufLen++] =
UChar(L);
00268
continue;
00269 }
00270 }
00271
00272
if (reservedSet.
find(C) < 0) {
00273
if (decbufLen+1 >= decbufAlloc)
00274 decbuf = (
UChar*)realloc(decbuf,(decbufAlloc *= 2)*
sizeof(
UChar));
00275 decbuf[decbufLen++] = C;
00276 }
00277
else {
00278
while (decbufLen+k-start >= decbufAlloc)
00279 decbuf = (
UChar*)realloc(decbuf,(decbufAlloc *= 2)*
sizeof(
UChar));
00280
for (
int p = start; p < k; p++)
00281 decbuf[decbufLen++] = string[p];
00282 }
00283 }
00284
00285
UString decoded(decbuf,decbufLen);
00286 free(decbuf);
00287
return decoded;
00288 }
00289
00290
static UString uriReserved =
";/?:@&=+$,";
00291
static UString uriAlpha =
"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
00292
static UString DecimalDigit =
"0123456789";
00293
static UString uriMark =
"-_.!~*'()";
00294
static UString uriUnescaped = uriAlpha+DecimalDigit+uriMark;
00295
00296
00297
00298
const ClassInfo FunctionImp::info = {
"Function", &InternalFunctionImp::info, 0, 0};
00299
00300
namespace KJS {
00301
class Parameter {
00302
public:
00303 Parameter(
const Identifier &n) :
name(n),
next(0L) { }
00304 ~Parameter() {
delete next; }
00305 Identifier
name;
00306 Parameter *
next;
00307 };
00308 }
00309
00310 FunctionImp::FunctionImp(
ExecState *exec,
const Identifier &n)
00311 :
InternalFunctionImp(
00312 static_cast<
FunctionPrototypeImp*>(exec->interpreter()->builtinFunctionPrototype().imp())
00313 ), param(0L), line0(-1), line1(-1), sid(-1)
00314 {
00315
00316 ident = n;
00317 }
00318
00319 FunctionImp::~FunctionImp()
00320 {
00321
delete param;
00322 }
00323
00324
bool FunctionImp::implementsCall()
const
00325
{
00326
return true;
00327 }
00328
00329
Value FunctionImp::call(
ExecState *exec,
Object &thisObj,
const List &args)
00330 {
00331
Object &globalObj = exec->
interpreter()->
globalObject();
00332
00333
00334
ContextImp ctx(globalObj, exec->
interpreter()->
imp(), thisObj, sid, codeType(),
00335 exec->
context().
imp(),
this, &args);
00336
ExecState newExec(exec->
interpreter(), &ctx);
00337 newExec._exception = exec->
exception();
00338
00339
00340 processParameters(&newExec, args);
00341
00342 processVarDecls(&newExec);
00343
00344 ctx.setLines(line0,line0);
00345 Debugger *dbg = exec->
interpreter()->
imp()->debugger();
00346
if (dbg) {
00347
if (!dbg->enterContext(&newExec)) {
00348
00349 dbg->imp()->abort();
00350
return Undefined();
00351 }
00352 }
00353
00354
Completion comp = execute(&newExec);
00355
00356 ctx.setLines(line1,line1);
00357
if (dbg) {
00358
Object func(
this);
00359
00360
00361
if (!dbg->exitContext(&newExec,comp)) {
00362
00363 dbg->imp()->abort();
00364
return Undefined();
00365 }
00366 }
00367
00368
00369
if (newExec.hadException())
00370 exec->
_exception = newExec.exception();
00371
00372
#ifdef KJS_VERBOSE
00373
CString n = ident.isEmpty() ?
CString(
"(internal)") : ident.ustring().cstring();
00374
if (comp.
complType() == Throw) {
00375 n +=
" throws";
00376 printInfo(exec, n.
c_str(), comp.
value());
00377 }
else if (comp.
complType() == ReturnValue) {
00378 n +=
" returns";
00379 printInfo(exec, n.
c_str(), comp.
value());
00380 }
else
00381 fprintf(stderr,
"%s returns: undefined\n", n.
c_str());
00382
#endif
00383
00384
if (comp.
complType() == Throw) {
00385 exec->
_exception = comp.
value();
00386
return comp.
value();
00387 }
00388
else if (comp.
complType() == ReturnValue)
00389
return comp.
value();
00390
else
00391
return Undefined();
00392 }
00393
00394
void FunctionImp::addParameter(
const Identifier &n)
00395 {
00396 Parameter **p = ¶m;
00397
while (*p)
00398 p = &(*p)->next;
00399
00400 *p =
new Parameter(n);
00401 }
00402
00403 Identifier FunctionImp::parameterProperty(
int index)
const
00404
{
00405
00406
int pos = 0;
00407 Parameter *p;
00408
for (p = param; p && pos < index; p = p->next)
00409 pos++;
00410
00411
if (!p)
00412
return Identifier::null();
00413
00414
00415 Identifier name = p->name;
00416
for (p = p->next; p; p = p->next)
00417
if (p->name ==
name)
00418
return Identifier::null();
00419
00420
return name;
00421 }
00422
00423
UString FunctionImp::parameterString()
const
00424
{
00425
UString s;
00426
const Parameter *p = param;
00427
while (p) {
00428
if (!s.
isEmpty())
00429 s +=
", ";
00430 s += p->name.ustring();
00431 p = p->next;
00432 }
00433
00434
return s;
00435 }
00436
00437
00438
00439
void FunctionImp::processParameters(
ExecState *exec,
const List &args)
00440 {
00441
Object variable = exec->
context().
imp()->
variableObject();
00442
00443
#ifdef KJS_VERBOSE
00444
fprintf(stderr,
"---------------------------------------------------\n"
00445
"processing parameters for %s call\n",
00446 name().isEmpty() ?
"(internal)" : name().ascii());
00447
#endif
00448
00449
if (param) {
00450
ListIterator it = args.
begin();
00451 Parameter *p = param;
00452
while (p) {
00453
if (it != args.
end()) {
00454
#ifdef KJS_VERBOSE
00455
fprintf(stderr,
"setting parameter %s ", p->name.ascii());
00456 printInfo(exec,
"to", *it);
00457
#endif
00458
variable.
put(exec, p->name, *it);
00459 it++;
00460 }
else
00461 variable.
put(exec, p->name,
Undefined());
00462 p = p->next;
00463 }
00464 }
00465
#ifdef KJS_VERBOSE
00466
else {
00467
for (
int i = 0; i < args.
size(); i++)
00468 printInfo(exec,
"setting argument", args[i]);
00469 }
00470
#endif
00471
}
00472
00473
void FunctionImp::processVarDecls(
ExecState *)
00474 {
00475 }
00476
00477
Value FunctionImp::get(
ExecState *exec,
const Identifier &propertyName)
const
00478
{
00479
00480
if (propertyName == argumentsPropertyName) {
00481
00482
ContextImp *context = exec->
context().
imp();
00483
00484
00485
while (context) {
00486
if (context->
function() ==
this)
00487
return static_cast<ActivationImp *>
00488 (context->
activationObject())->get(exec, propertyName);
00489 context = context->
callingContext();
00490 }
00491
return Null();
00492 }
00493
00494
00495
if (propertyName == lengthPropertyName) {
00496
const Parameter * p = param;
00497
int count = 0;
00498
while (p) {
00499 ++count;
00500 p = p->next;
00501 }
00502
return Number(count);
00503 }
00504
00505
return InternalFunctionImp::get(exec, propertyName);
00506 }
00507
00508
void FunctionImp::put(
ExecState *exec,
const Identifier &propertyName,
const Value &value,
int attr)
00509 {
00510
if (propertyName == argumentsPropertyName || propertyName == lengthPropertyName)
00511
return;
00512 InternalFunctionImp::put(exec, propertyName, value, attr);
00513 }
00514
00515
bool FunctionImp::hasProperty(
ExecState *exec,
const Identifier &propertyName)
const
00516
{
00517
if (propertyName == argumentsPropertyName || propertyName == lengthPropertyName)
00518
return true;
00519
return InternalFunctionImp::hasProperty(exec, propertyName);
00520 }
00521
00522
bool FunctionImp::deleteProperty(
ExecState *exec,
const Identifier &propertyName)
00523 {
00524
if (propertyName == argumentsPropertyName || propertyName == lengthPropertyName)
00525
return false;
00526
return InternalFunctionImp::deleteProperty(exec, propertyName);
00527 }
00528
00529
00530
00531
00532
const ClassInfo DeclaredFunctionImp::info = {
"Function", &FunctionImp::info, 0, 0};
00533
00534 DeclaredFunctionImp::DeclaredFunctionImp(
ExecState *exec,
const Identifier &n,
00535 FunctionBodyNode *b,
const ScopeChain &sc)
00536 :
FunctionImp(exec,n), body(b)
00537 {
00538
Value protect(
this);
00539 body->ref();
00540 setScope(sc);
00541 line0 = body->firstLine();
00542 line1 = body->lastLine();
00543 sid = body->sourceId();
00544 }
00545
00546 DeclaredFunctionImp::~DeclaredFunctionImp()
00547 {
00548
if ( body->deref() )
00549
delete body;
00550 }
00551
00552
bool DeclaredFunctionImp::implementsConstruct()
const
00553
{
00554
return true;
00555 }
00556
00557
00558
Object DeclaredFunctionImp::construct(
ExecState *exec,
const List &args)
00559 {
00560
Object proto;
00561
Value p = get(exec,prototypePropertyName);
00562
if (p.
type() == ObjectType)
00563 proto =
Object(static_cast<ObjectImp*>(p.
imp()));
00564
else
00565 proto = exec->
interpreter()->
builtinObjectPrototype();
00566
00567
Object obj(
new ObjectImp(proto));
00568
00569
Value res = call(exec,obj,args);
00570
00571
if (res.
type() == ObjectType)
00572
return Object::dynamicCast(res);
00573
else
00574
return obj;
00575 }
00576
00577
Completion DeclaredFunctionImp::execute(
ExecState *exec)
00578 {
00579
Completion result = body->execute(exec);
00580
00581
if (result.
complType() == Throw || result.
complType() == ReturnValue)
00582
return result;
00583
return Completion(Normal,
Undefined());
00584 }
00585
00586
void DeclaredFunctionImp::processVarDecls(
ExecState *exec)
00587 {
00588 body->processVarDecls(exec);
00589 }
00590
00591
00592
00593
00594
00595
class ShadowImp :
public ObjectImp {
00596
public:
00597 ShadowImp(ObjectImp *_obj, Identifier _prop) : obj(_obj), prop(_prop) {}
00598
virtual void mark();
00599
00600
virtual const ClassInfo *classInfo()
const {
return &info; }
00601
static const ClassInfo info;
00602
00603 ObjectImp *obj;
00604 Identifier prop;
00605 };
00606
00607
const ClassInfo ShadowImp::info = {
"Shadow", 0, 0, 0};
00608
00609
void ShadowImp::mark()
00610 {
00611 ObjectImp::mark();
00612
if (!obj->marked())
00613 obj->mark();
00614 }
00615
00616
00617
00618
const ClassInfo ArgumentsImp::info = {
"Arguments", 0, 0, 0};
00619
00620
00621 ArgumentsImp::ArgumentsImp(
ExecState *exec,
FunctionImp *func,
const List &args,
00622 ActivationImp *act)
00623 : ObjectImp(exec->interpreter()->builtinObjectPrototype()), activation(act)
00624 {
00625
Value protect(
this);
00626 putDirect(calleePropertyName, func, DontEnum);
00627 putDirect(lengthPropertyName, args.
size(), DontEnum);
00628
if (!args.
isEmpty()) {
00629
ListIterator arg = args.
begin();
00630
for (
int i = 0; arg != args.
end(); arg++, i++) {
00631 Identifier prop = func->
parameterProperty(i);
00632
if (!prop.isEmpty()) {
00633
Object shadow(
new ShadowImp(act,prop));
00634 ObjectImp::put(exec,Identifier::from(i), shadow, DontEnum);
00635 }
00636
else {
00637 ObjectImp::put(exec,Identifier::from(i), *arg, DontEnum);
00638 }
00639 }
00640 }
00641 }
00642
00643
void ArgumentsImp::mark()
00644 {
00645 ObjectImp::mark();
00646
if (!activation->marked())
00647 activation->mark();
00648 }
00649
00650
Value ArgumentsImp::get(
ExecState *exec,
const Identifier &propertyName)
const
00651
{
00652
Value val = ObjectImp::get(exec,propertyName);
00653 assert(SimpleNumber::is(val.
imp()) || !val.
imp()->
isDestroyed());
00654
Object obj =
Object::dynamicCast(val);
00655
if (obj.
isValid() && obj.
inherits(&ShadowImp::info)) {
00656 ShadowImp *shadow = static_cast<ShadowImp*>(val.
imp());
00657
return activation->
get(exec,shadow->prop);
00658 }
00659
else {
00660
return val;
00661 }
00662 }
00663
00664
void ArgumentsImp::put(
ExecState *exec,
const Identifier &propertyName,
00665
const Value &value,
int attr)
00666 {
00667
Value val = ObjectImp::get(exec,propertyName);
00668
Object obj =
Object::dynamicCast(val);
00669
if (obj.
isValid() && obj.
inherits(&ShadowImp::info)) {
00670 ShadowImp *shadow = static_cast<ShadowImp*>(val.
imp());
00671 activation->
put(exec,shadow->prop,value,attr);
00672 }
00673
else {
00674 ObjectImp::put(exec,propertyName,value,attr);
00675 }
00676 }
00677
00678
00679
00680
const ClassInfo ActivationImp::info = {
"Activation", 0, 0, 0};
00681
00682
00683 ActivationImp::ActivationImp(
FunctionImp *function,
const List &arguments)
00684 : _function(function), _arguments(true), _argumentsObject(0)
00685 {
00686 _arguments = arguments.
copy();
00687
00688 }
00689
00690
Value ActivationImp::get(
ExecState *exec,
const Identifier &propertyName)
const
00691
{
00692
if (propertyName == argumentsPropertyName) {
00693
ValueImp *imp = getDirect(propertyName);
00694
if (imp)
00695
return Value(imp);
00696
00697
if (!_argumentsObject)
00698 _argumentsObject =
new ArgumentsImp(exec, _function, _arguments, const_cast<ActivationImp*>(
this));
00699
return Value(_argumentsObject);
00700 }
00701
return ObjectImp::get(exec, propertyName);
00702 }
00703
00704
bool ActivationImp::hasProperty(
ExecState *exec,
const Identifier &propertyName)
const
00705
{
00706
if (propertyName == argumentsPropertyName)
00707
return true;
00708
return ObjectImp::hasProperty(exec, propertyName);
00709 }
00710
00711
bool ActivationImp::deleteProperty(
ExecState *exec,
const Identifier &propertyName)
00712 {
00713
if (propertyName == argumentsPropertyName)
00714
return false;
00715
return ObjectImp::deleteProperty(exec, propertyName);
00716 }
00717
00718
void ActivationImp::mark()
00719 {
00720 ObjectImp::mark();
00721
if (_function && !_function->marked())
00722 _function->mark();
00723 _arguments.
mark();
00724
if (_argumentsObject && !_argumentsObject->marked())
00725 _argumentsObject->mark();
00726 }
00727
00728
00729
00730
00731 GlobalFuncImp::GlobalFuncImp(
ExecState *,
FunctionPrototypeImp *funcProto,
00732
int i,
int len,
const Identifier &_ident)
00733 :
InternalFunctionImp(funcProto), id(i)
00734 {
00735
Value protect(
this);
00736 putDirect(lengthPropertyName, len, DontDelete|ReadOnly|DontEnum);
00737 ident = _ident;
00738 }
00739
00740 CodeType GlobalFuncImp::codeType()
const
00741
{
00742
return id == Eval ? EvalCode : codeType();
00743 }
00744
00745
bool GlobalFuncImp::implementsCall()
const
00746
{
00747
return true;
00748 }
00749
00750
Value GlobalFuncImp::call(
ExecState *exec,
Object &thisObj,
const List &args)
00751 {
00752
Value res;
00753
00754
static const char non_escape[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
00755
"abcdefghijklmnopqrstuvwxyz"
00756
"0123456789@*_+-./";
00757
00758
switch (
id) {
00759
case Eval: {
00760
Value x = args[0];
00761
if (x.
type() != StringType)
00762
return x;
00763
else {
00764
UString s = x.
toString(exec);
00765
00766
int errLine;
00767
UString errMsg;
00768
#ifdef KJS_VERBOSE
00769
fprintf(stderr,
"eval(): %s\n", s.
ascii());
00770
#endif
00771
SourceCode *source;
00772 FunctionBodyNode *progNode = Parser::parse(s.
data(),s.
size(),&source,&errLine,&errMsg);
00773
if (progNode)
00774 progNode->setProgram(
true);
00775
00776
00777 Debugger *dbg = exec->
interpreter()->
imp()->debugger();
00778
if (dbg) {
00779
bool cont = dbg->sourceParsed(exec,source->sid,s,errLine);
00780
if (!cont) {
00781 source->deref();
00782 dbg->imp()->abort();
00783
if (progNode)
00784
delete progNode;
00785
return Undefined();
00786 }
00787 }
00788
00789 exec->
interpreter()->
imp()->addSourceCode(source);
00790
00791
00792
if (!progNode) {
00793
Object err =
Error::create(exec,SyntaxError,errMsg.
ascii(),errLine);
00794 err.
put(exec,
"sid",
Number(source->sid));
00795 exec->
setException(err);
00796 source->deref();
00797
return err;
00798 }
00799
00800 source->deref();
00801 progNode->ref();
00802
00803
00804
ContextImp ctx(exec->
interpreter()->
globalObject(),
00805 exec->
interpreter()->
imp(),
00806 thisObj,
00807 source->sid,
00808 EvalCode,
00809 exec->
context().
imp());
00810
00811
ExecState newExec(exec->
interpreter(), &ctx);
00812 newExec.setException(exec->
exception());
00813
00814 ctx.setLines(progNode->firstLine(),progNode->firstLine());
00815
if (dbg) {
00816
if (!dbg->enterContext(&newExec)) {
00817
00818 dbg->imp()->abort();
00819
00820
if (progNode->deref())
00821
delete progNode;
00822
return Undefined();
00823 }
00824 }
00825
00826
00827
Completion c = progNode->execute(&newExec);
00828
00829 res =
Undefined();
00830
00831 ctx.setLines(progNode->lastLine(),progNode->lastLine());
00832
if (dbg && !dbg->exitContext(&newExec,c))
00833
00834 dbg->imp()->abort();
00835
else if (newExec.hadException())
00836 exec->
_exception = newExec.exception();
00837
else if (c.
complType() == Throw)
00838 exec->
setException(c.
value());
00839
else if (c.
isValueCompletion())
00840 res = c.
value();
00841
00842
if (progNode->deref())
00843
delete progNode;
00844
00845
return res;
00846 }
00847
break;
00848 }
00849
case ParseInt: {
00850
CString cstr = args[0].
toString(exec).
cstring();
00851
const char* startptr = cstr.
c_str();
00852
while ( *startptr && isspace( *startptr ) )
00853 ++startptr;
00854
00855
int base = 0;
00856
if (args.
size() > 1)
00857 base = args[1].toInt32(exec);
00858
00859
double sign = 1;
00860
if (*startptr ==
'-') {
00861 sign = -1;
00862 startptr++;
00863 }
00864
else if (*startptr ==
'+') {
00865 sign = 1;
00866 startptr++;
00867 }
00868
00869
bool leading0 =
false;
00870
if ((base == 0 || base == 16) &&
00871 (*startptr ==
'0' && (startptr[1] ==
'x' || startptr[1] ==
'X'))) {
00872 startptr += 2;
00873 base = 16;
00874 }
00875
else if (base == 0 && *startptr ==
'0') {
00876 base = 8;
00877 leading0 =
true;
00878 startptr++;
00879 }
00880
else if (base == 0) {
00881 base = 10;
00882 }
00883
00884
if (base < 2 || base > 36) {
00885 res =
Number(NaN);
00886 }
00887
else {
00888
long double val = 0;
00889
int index = 0;
00890
for (; *startptr; startptr++) {
00891
int thisval = -1;
00892
if (*startptr >=
'0' && *startptr <=
'9')
00893 thisval = *startptr -
'0';
00894
else if (*startptr >=
'a' && *startptr <=
'z')
00895 thisval = 10 + *startptr -
'a';
00896
else if (*startptr >=
'A' && *startptr <=
'Z')
00897 thisval = 10 + *startptr -
'A';
00898
00899
if (thisval < 0 || thisval >= base)
00900
break;
00901
00902 val *= base;
00903 val += thisval;
00904 index++;
00905 }
00906
00907
if (index == 0 && !leading0)
00908 res =
Number(NaN);
00909
else
00910 res =
Number(
double(val)*sign);
00911 }
00912
break;
00913 }
00914
case ParseFloat: {
00915
UString str = args[0].toString(exec);
00916
00917
bool isHex =
false;
00918
if (str.
is8Bit()) {
00919
const char *c = str.
ascii();
00920
while (isspace(*c))
00921 c++;
00922 isHex = (c[0] ==
'0' && (c[1] ==
'x' || c[1] ==
'X'));
00923 }
00924
if (isHex)
00925 res =
Number(0);
00926
else
00927 res =
Number(str.
toDouble(
true ,
false ));
00928 }
00929
break;
00930
case IsNaN:
00931 res =
Boolean(isNaN(args[0].toNumber(exec)));
00932
break;
00933
case IsFinite: {
00934
double n = args[0].toNumber(exec);
00935 res =
Boolean(!isNaN(n) && !isInf(n));
00936
break;
00937 }
00938
case DecodeURI:
00939 res =
String(decodeURI(exec,args[0].toString(exec),uriReserved+
"#"));
00940
break;
00941
case DecodeURIComponent:
00942 res =
String(decodeURI(exec,args[0].toString(exec),
""));
00943
break;
00944
case EncodeURI:
00945 res =
String(encodeURI(exec,args[0].toString(exec),uriReserved+uriUnescaped+
"#"));
00946
break;
00947
case EncodeURIComponent:
00948 res =
String(encodeURI(exec,args[0].toString(exec),uriUnescaped));
00949
break;
00950
case Escape: {
00951
UString r =
"", s, str = args[0].toString(exec);
00952
const UChar *c = str.
data();
00953
for (
int k = 0; k < str.
size(); k++, c++) {
00954
int u = c->
uc;
00955
if (u > 255) {
00956
char tmp[7];
00957 sprintf(tmp,
"%%u%04X", u);
00958 s =
UString(tmp);
00959 }
else if (strchr(non_escape, (
char)u)) {
00960 s =
UString(c, 1);
00961 }
else {
00962
char tmp[4];
00963 sprintf(tmp,
"%%%02X", u);
00964 s =
UString(tmp);
00965 }
00966 r += s;
00967 }
00968 res =
String(r);
00969
break;
00970 }
00971
case UnEscape: {
00972
UString s, str = args[0].toString(exec);
00973
int k = 0, len = str.
size();
00974
while (k < len) {
00975
const UChar *c = str.
data() + k;
00976
UChar u;
00977
if (*c ==
UChar(
'%') && k <= len - 6 && *(c+1) ==
UChar(
'u')) {
00978
if (Lexer::isHexDigit((c+2)->uc) && Lexer::isHexDigit((c+3)->uc) &&
00979 Lexer::isHexDigit((c+4)->uc) && Lexer::isHexDigit((c+5)->uc)) {
00980 u = Lexer::convertUnicode((c+2)->uc, (c+3)->uc,
00981 (c+4)->uc, (c+5)->uc);
00982 c = &u;
00983 k += 5;
00984 }
00985 }
else if (*c ==
UChar(
'%') && k <= len - 3 &&
00986 Lexer::isHexDigit((c+1)->uc) && Lexer::isHexDigit((c+2)->uc)) {
00987 u =
UChar(Lexer::convertHex((c+1)->uc, (c+2)->uc));
00988 c = &u;
00989 k += 2;
00990 }
00991 k++;
00992 s +=
UString(c, 1);
00993 }
00994 res =
String(s);
00995
break;
00996 }
00997
case KJSPrint: {
00998
#ifndef NDEBUG
00999
UString str = args[0].toString(exec);
01000 puts(str.
ascii());
01001
#endif
01002
break;
01003 }
01004 }
01005
01006
return res;
01007 }