/[jscoverage]/trunk/js/jsbuiltins.cpp
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revision 506 by siliconforks, Sat Sep 26 23:15:22 2009 UTC revision 507 by siliconforks, Sun Jan 10 07:23:34 2010 UTC
# Line 1  Line 1 
1  /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4; -*-  /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4; -*-
2   * vim: set ts=8 sw=4 et tw=99:   * vim: set ts=8 sw=4 et tw=99:
3   *   *
4   * ***** BEGIN LICENSE BLOCK *****   * ***** BEGIN LICENSE BLOCK *****
# Line 39  Line 39 
39   *   *
40   * ***** END LICENSE BLOCK ***** */   * ***** END LICENSE BLOCK ***** */
41    
 #include "jsstddef.h"  
42  #include <math.h>  #include <math.h>
43    
44  #include "jsapi.h"  #include "jsapi.h"
45    #include "jsstdint.h"
46  #include "jsarray.h"  #include "jsarray.h"
47  #include "jsbool.h"  #include "jsbool.h"
48  #include "jscntxt.h"  #include "jscntxt.h"
49  #include "jsgc.h"  #include "jsgc.h"
50  #include "jsiter.h"  #include "jsiter.h"
51    #include "jsnum.h"
52  #include "jslibmath.h"  #include "jslibmath.h"
53  #include "jsmath.h"  #include "jsmath.h"
54  #include "jsnum.h"  #include "jsnum.h"
# Line 57  Line 58 
58  #include "jsstr.h"  #include "jsstr.h"
59  #include "jsbuiltins.h"  #include "jsbuiltins.h"
60  #include "jstracer.h"  #include "jstracer.h"
61    #include "jsvector.h"
62    
63    #include "jsatominlines.h"
64    #include "jsobjinlines.h"
65    
66  using namespace avmplus;  using namespace avmplus;
67  using namespace nanojit;  using namespace nanojit;
# Line 83  Line 88 
88          u.s.lo = 0xffffffff;          u.s.lo = 0xffffffff;
89          return u.d;          return u.d;
90      }      }
91      jsdouble r;      return js_fmod(a, b);
 #ifdef XP_WIN  
     /* Workaround MS fmod bug where 42 % (1/0) => NaN, not 42. */  
     if (JSDOUBLE_IS_FINITE(a) && JSDOUBLE_IS_INFINITE(b))  
         r = a;  
     else  
 #endif  
         r = fmod(a, b);  
     return r;  
92  }  }
93    JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_dmod, DOUBLE, DOUBLE, 1, 1)
94    
95  int32 FASTCALL  int32 FASTCALL
96  js_imod(int32 a, int32 b)  js_imod(int32 a, int32 b)
# Line 102  Line 100 
100      int r = a % b;      int r = a % b;
101      return r;      return r;
102  }  }
103    JS_DEFINE_CALLINFO_2(extern, INT32, js_imod, INT32, INT32, 1, 1)
104    
105  /* The following boxing/unboxing primitives we can't emit inline because  /* The following boxing/unboxing primitives we can't emit inline because
106     they either interact with the GC and depend on Spidermonkey's 32-bit     they either interact with the GC and depend on Spidermonkey's 32-bit
# Line 119  Line 118 
118          return JSVAL_ERROR_COOKIE;          return JSVAL_ERROR_COOKIE;
119      return v;      return v;
120  }  }
121    JS_DEFINE_CALLINFO_2(extern, JSVAL, js_BoxDouble, CONTEXT, DOUBLE, 1, 1)
122    
123  jsval FASTCALL  jsval FASTCALL
124  js_BoxInt32(JSContext* cx, int32 i)  js_BoxInt32(JSContext* cx, int32 i)
# Line 131  Line 131 
131      if (!js_NewDoubleInRootedValue(cx, d, &v))      if (!js_NewDoubleInRootedValue(cx, d, &v))
132          return JSVAL_ERROR_COOKIE;          return JSVAL_ERROR_COOKIE;
133      return v;      return v;
134  }  }
135    JS_DEFINE_CALLINFO_2(extern, JSVAL, js_BoxInt32, CONTEXT, INT32, 1, 1)
136    
137  jsdouble FASTCALL  jsdouble FASTCALL
138  js_UnboxDouble(jsval v)  js_UnboxDouble(jsval v)
# Line 140  Line 141 
141          return (jsdouble)JSVAL_TO_INT(v);          return (jsdouble)JSVAL_TO_INT(v);
142      return *JSVAL_TO_DOUBLE(v);      return *JSVAL_TO_DOUBLE(v);
143  }  }
144    JS_DEFINE_CALLINFO_1(extern, DOUBLE, js_UnboxDouble, JSVAL, 1, 1)
145    
146  int32 FASTCALL  int32 FASTCALL
147  js_UnboxInt32(jsval v)  js_UnboxInt32(jsval v)
# Line 148  Line 150 
150          return JSVAL_TO_INT(v);          return JSVAL_TO_INT(v);
151      return js_DoubleToECMAInt32(*JSVAL_TO_DOUBLE(v));      return js_DoubleToECMAInt32(*JSVAL_TO_DOUBLE(v));
152  }  }
153    JS_DEFINE_CALLINFO_1(extern, INT32, js_UnboxInt32, JSVAL, 1, 1)
154    
155  int32 FASTCALL  int32 FASTCALL
156  js_DoubleToInt32(jsdouble d)  js_DoubleToInt32(jsdouble d)
157  {  {
158      return js_DoubleToECMAInt32(d);      return js_DoubleToECMAInt32(d);
159  }  }
160    JS_DEFINE_CALLINFO_1(extern, INT32, js_DoubleToInt32, DOUBLE, 1, 1)
161    
162  uint32 FASTCALL  uint32 FASTCALL
163  js_DoubleToUint32(jsdouble d)  js_DoubleToUint32(jsdouble d)
164  {  {
165      return js_DoubleToECMAUint32(d);      return js_DoubleToECMAUint32(d);
166  }  }
167    JS_DEFINE_CALLINFO_1(extern, UINT32, js_DoubleToUint32, DOUBLE, 1, 1)
168    
169  jsdouble FASTCALL  jsdouble FASTCALL
170  js_StringToNumber(JSContext* cx, JSString* str)  js_StringToNumber(JSContext* cx, JSString* str)
# Line 169  Line 174 
174      const jschar* ep;      const jschar* ep;
175      jsdouble d;      jsdouble d;
176    
177      JSSTRING_CHARS_AND_END(str, bp, end);      str->getCharsAndEnd(bp, end);
178      if ((!js_strtod(cx, bp, end, &ep, &d) ||      if ((!js_strtod(cx, bp, end, &ep, &d) ||
179           js_SkipWhiteSpace(ep, end) != end) &&           js_SkipWhiteSpace(ep, end) != end) &&
180          (!js_strtointeger(cx, bp, end, &ep, 0, &d) ||          (!js_strtointeger(cx, bp, end, &ep, 0, &d) ||
# Line 178  Line 183 
183      }      }
184      return d;      return d;
185  }  }
186    JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_StringToNumber, CONTEXT, STRING, 1, 1)
187    
188  int32 FASTCALL  int32 FASTCALL
189  js_StringToInt32(JSContext* cx, JSString* str)  js_StringToInt32(JSContext* cx, JSString* str)
# Line 186  Line 192 
192      const jschar* end;      const jschar* end;
193      const jschar* ep;      const jschar* ep;
194      jsdouble d;      jsdouble d;
195        
196        if (str->length() == 1) {
197            jschar c = str->chars()[0];
198            if ('0' <= c && c <= '9')
199                return c - '0';
200            return 0;      
201        }
202    
203      JSSTRING_CHARS_AND_END(str, bp, end);      str->getCharsAndEnd(bp, end);
204      if ((!js_strtod(cx, bp, end, &ep, &d) ||      if ((!js_strtod(cx, bp, end, &ep, &d) ||
205           js_SkipWhiteSpace(ep, end) != end) &&           js_SkipWhiteSpace(ep, end) != end) &&
206          (!js_strtointeger(cx, bp, end, &ep, 0, &d) ||          (!js_strtointeger(cx, bp, end, &ep, 0, &d) ||
# Line 196  Line 209 
209      }      }
210      return js_DoubleToECMAInt32(d);      return js_DoubleToECMAInt32(d);
211  }  }
212    JS_DEFINE_CALLINFO_2(extern, INT32, js_StringToInt32, CONTEXT, STRING, 1, 1)
213    
214  SideExit* FASTCALL  SideExit* FASTCALL
215  js_CallTree(InterpState* state, Fragment* f)  js_CallTree(InterpState* state, Fragment* f)
# Line 231  Line 245 
245    
246      return lr;      return lr;
247  }  }
248    JS_DEFINE_CALLINFO_2(extern, SIDEEXIT, js_CallTree, INTERPSTATE, FRAGMENT, 0, 0)
249    
250  JSBool FASTCALL  JSBool FASTCALL
251  js_AddProperty(JSContext* cx, JSObject* obj, JSScopeProperty* sprop)  js_AddProperty(JSContext* cx, JSObject* obj, JSScopeProperty* sprop)
252  {  {
253      JS_ASSERT(OBJ_IS_NATIVE(obj));      JS_ASSERT(OBJ_IS_NATIVE(obj));
     JS_ASSERT(SPROP_HAS_STUB_SETTER(sprop));  
   
254      JS_LOCK_OBJ(cx, obj);      JS_LOCK_OBJ(cx, obj);
255    
256      JSScope* scope = OBJ_SCOPE(obj);      JSScope* scope = OBJ_SCOPE(obj);
257      uint32 slot;      uint32 slot;
258      if (scope->object == obj) {      if (scope->owned()) {
259          JS_ASSERT(!SCOPE_HAS_PROPERTY(scope, sprop));          JS_ASSERT(!scope->has(sprop));
260      } else {      } else {
261          scope = js_GetMutableScope(cx, obj);          scope = js_GetMutableScope(cx, obj);
262          if (!scope)          if (!scope)
# Line 265  Line 278 
278              }              }
279          }          }
280    
281          js_ExtendScopeShape(cx, scope, sprop);          scope->extend(cx, sprop);
         ++scope->entryCount;  
         scope->lastProp = sprop;  
282      } else {      } else {
283          JSScopeProperty *sprop2 = js_AddScopeProperty(cx, scope, sprop->id,          JSScopeProperty *sprop2 = scope->add(cx, sprop->id,
284                                                        sprop->getter,                                               sprop->getter, sprop->setter,
285                                                        sprop->setter,                                               SPROP_INVALID_SLOT, sprop->attrs,
286                                                        SPROP_INVALID_SLOT,                                               sprop->flags, sprop->shortid);
                                                       sprop->attrs,  
                                                       sprop->flags,  
                                                       sprop->shortid);  
287          if (sprop2 != sprop)          if (sprop2 != sprop)
288              goto exit_trace;              goto exit_trace;
289      }      }
# Line 290  Line 298 
298      JS_UNLOCK_SCOPE(cx, scope);      JS_UNLOCK_SCOPE(cx, scope);
299      return JS_FALSE;      return JS_FALSE;
300  }  }
301    JS_DEFINE_CALLINFO_3(extern, BOOL, js_AddProperty, CONTEXT, OBJECT, SCOPEPROP, 0, 0)
302    
303  static JSBool  static JSBool
304  HasProperty(JSContext* cx, JSObject* obj, jsid id)  HasProperty(JSContext* cx, JSObject* obj, jsid id)
# Line 297  Line 306 
306      // Check that we know how the lookup op will behave.      // Check that we know how the lookup op will behave.
307      for (JSObject* pobj = obj; pobj; pobj = OBJ_GET_PROTO(cx, pobj)) {      for (JSObject* pobj = obj; pobj; pobj = OBJ_GET_PROTO(cx, pobj)) {
308          if (pobj->map->ops->lookupProperty != js_LookupProperty)          if (pobj->map->ops->lookupProperty != js_LookupProperty)
309              return JSVAL_TO_PSEUDO_BOOLEAN(JSVAL_VOID);              return JSVAL_TO_SPECIAL(JSVAL_VOID);
310          JSClass* clasp = OBJ_GET_CLASS(cx, pobj);          JSClass* clasp = OBJ_GET_CLASS(cx, pobj);
311          if (clasp->resolve != JS_ResolveStub && clasp != &js_StringClass)          if (clasp->resolve != JS_ResolveStub && clasp != &js_StringClass)
312              return JSVAL_TO_PSEUDO_BOOLEAN(JSVAL_VOID);              return JSVAL_TO_SPECIAL(JSVAL_VOID);
313      }      }
314    
315      JSObject* obj2;      JSObject* obj2;
316      JSProperty* prop;      JSProperty* prop;
317      if (!js_LookupPropertyWithFlags(cx, obj, id, JSRESOLVE_QUALIFIED, &obj2, &prop))      if (js_LookupPropertyWithFlags(cx, obj, id, JSRESOLVE_QUALIFIED, &obj2, &prop) < 0)
318          return JSVAL_TO_PSEUDO_BOOLEAN(JSVAL_VOID);          return JSVAL_TO_SPECIAL(JSVAL_VOID);
319      if (prop)      if (prop)
320          OBJ_DROP_PROPERTY(cx, obj2, prop);          obj2->dropProperty(cx, prop);
321      return prop != NULL;      return prop != NULL;
322  }  }
323    
# Line 321  Line 330 
330    
331      return HasProperty(cx, obj, id);      return HasProperty(cx, obj, id);
332  }  }
333    JS_DEFINE_CALLINFO_3(extern, BOOL, js_HasNamedProperty, CONTEXT, OBJECT, STRING, 0, 0)
334    
335  JSBool FASTCALL  JSBool FASTCALL
336  js_HasNamedPropertyInt32(JSContext* cx, JSObject* obj, int32 index)  js_HasNamedPropertyInt32(JSContext* cx, JSObject* obj, int32 index)
# Line 331  Line 341 
341    
342      return HasProperty(cx, obj, id);      return HasProperty(cx, obj, id);
343  }  }
344    JS_DEFINE_CALLINFO_3(extern, BOOL, js_HasNamedPropertyInt32, CONTEXT, OBJECT, INT32, 0, 0)
 jsval FASTCALL  
 js_CallGetter(JSContext* cx, JSObject* obj, JSScopeProperty* sprop)  
 {  
     JS_ASSERT(!SPROP_HAS_STUB_GETTER(sprop));  
     jsval v;  
     if (!js_GetSprop(cx, sprop, obj, &v))  
         return JSVAL_ERROR_COOKIE;  
     return v;  
 }  
345    
346  JSString* FASTCALL  JSString* FASTCALL
347  js_TypeOfObject(JSContext* cx, JSObject* obj)  js_TypeOfObject(JSContext* cx, JSObject* obj)
# Line 348  Line 349 
349      JSType type = JS_TypeOfValue(cx, OBJECT_TO_JSVAL(obj));      JSType type = JS_TypeOfValue(cx, OBJECT_TO_JSVAL(obj));
350      return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]);      return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]);
351  }  }
352    JS_DEFINE_CALLINFO_2(extern, STRING, js_TypeOfObject, CONTEXT, OBJECT, 1, 1)
353    
354  JSString* FASTCALL  JSString* FASTCALL
355  js_TypeOfBoolean(JSContext* cx, int32 unboxed)  js_TypeOfBoolean(JSContext* cx, int32 unboxed)
356  {  {
357      /* Watch out for pseudo-booleans. */      /* Watch out for pseudo-booleans. */
358      jsval boxed = PSEUDO_BOOLEAN_TO_JSVAL(unboxed);      jsval boxed = SPECIAL_TO_JSVAL(unboxed);
359      JS_ASSERT(JSVAL_IS_VOID(boxed) || JSVAL_IS_BOOLEAN(boxed));      JS_ASSERT(JSVAL_IS_VOID(boxed) || JSVAL_IS_BOOLEAN(boxed));
360      JSType type = JS_TypeOfValue(cx, boxed);      JSType type = JS_TypeOfValue(cx, boxed);
361      return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]);      return ATOM_TO_STRING(cx->runtime->atomState.typeAtoms[type]);
362  }  }
363    JS_DEFINE_CALLINFO_2(extern, STRING, js_TypeOfBoolean, CONTEXT, INT32, 1, 1)
364    
365  jsdouble FASTCALL  jsdouble FASTCALL
366  js_BooleanOrUndefinedToNumber(JSContext* cx, int32 unboxed)  js_BooleanOrUndefinedToNumber(JSContext* cx, int32 unboxed)
367  {  {
368      if (unboxed == JSVAL_TO_PSEUDO_BOOLEAN(JSVAL_VOID))      if (unboxed == JSVAL_TO_SPECIAL(JSVAL_VOID))
369          return js_NaN;          return js_NaN;
370      JS_ASSERT(unboxed == JS_TRUE || unboxed == JS_FALSE);      JS_ASSERT(unboxed == JS_TRUE || unboxed == JS_FALSE);
371      return unboxed;      return unboxed;
372  }  }
373    JS_DEFINE_CALLINFO_2(extern, DOUBLE, js_BooleanOrUndefinedToNumber, CONTEXT, INT32, 1, 1)
374    
375  JSString* FASTCALL  JSString* FASTCALL
376  js_BooleanOrUndefinedToString(JSContext *cx, int32 unboxed)  js_BooleanOrUndefinedToString(JSContext *cx, int32 unboxed)
# Line 374  Line 378 
378      JS_ASSERT(uint32(unboxed) <= 2);      JS_ASSERT(uint32(unboxed) <= 2);
379      return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[unboxed]);      return ATOM_TO_STRING(cx->runtime->atomState.booleanAtoms[unboxed]);
380  }  }
381    JS_DEFINE_CALLINFO_2(extern, STRING, js_BooleanOrUndefinedToString, CONTEXT, INT32, 1, 1)
 JSObject* FASTCALL  
 js_Arguments(JSContext* cx)  
 {  
     return NULL;  
 }  
382    
383  JSObject* FASTCALL  JSObject* FASTCALL
384  js_NewNullClosure(JSContext* cx, JSObject* funobj, JSObject* proto, JSObject* parent)  js_NewNullClosure(JSContext* cx, JSObject* funobj, JSObject* proto, JSObject* parent)
# Line 391  Line 390 
390      JSFunction *fun = (JSFunction*) funobj;      JSFunction *fun = (JSFunction*) funobj;
391      JS_ASSERT(GET_FUNCTION_PRIVATE(cx, funobj) == fun);      JS_ASSERT(GET_FUNCTION_PRIVATE(cx, funobj) == fun);
392    
393      JSObject* closure = (JSObject*) js_NewGCThing(cx, GCX_OBJECT, sizeof(JSObject));      JSObject* closure = js_NewGCObject(cx, GCX_OBJECT);
394      if (!closure)      if (!closure)
395          return NULL;          return NULL;
396    
397      js_HoldScope(OBJ_SCOPE(proto));      closure->initSharingEmptyScope(&js_FunctionClass, proto, parent,
398      closure->map = proto->map;                                     reinterpret_cast<jsval>(fun));
     closure->classword = jsuword(&js_FunctionClass);  
     closure->fslots[JSSLOT_PROTO] = OBJECT_TO_JSVAL(proto);  
     closure->fslots[JSSLOT_PARENT] = OBJECT_TO_JSVAL(parent);  
     closure->fslots[JSSLOT_PRIVATE] = PRIVATE_TO_JSVAL(fun);  
     for (unsigned i = JSSLOT_PRIVATE + 1; i != JS_INITIAL_NSLOTS; ++i)  
         closure->fslots[i] = JSVAL_VOID;  
     closure->dslots = NULL;  
399      return closure;      return closure;
400  }  }
401    JS_DEFINE_CALLINFO_4(extern, OBJECT, js_NewNullClosure, CONTEXT, OBJECT, OBJECT, OBJECT, 0, 0)
402    
403    JSString* FASTCALL
404    js_ConcatN(JSContext *cx, JSString **strArray, uint32 size)
405    {
406        /* Calculate total size. */
407        size_t numChar = 1;
408        for (uint32 i = 0; i < size; ++i) {
409            size_t before = numChar;
410            numChar += strArray[i]->length();
411            if (numChar < before)
412                return NULL;
413        }
414    
415  #define BUILTIN1 JS_DEFINE_CALLINFO_1  
416  #define BUILTIN2 JS_DEFINE_CALLINFO_2      /* Allocate buffer. */
417  #define BUILTIN3 JS_DEFINE_CALLINFO_3      if (numChar & js::tl::MulOverflowMask<sizeof(jschar)>::result)
418  #define BUILTIN4 JS_DEFINE_CALLINFO_4          return NULL;
419  #define BUILTIN5 JS_DEFINE_CALLINFO_5      jschar *buf = (jschar *)cx->malloc(numChar * sizeof(jschar));
420  #include "builtins.tbl"      if (!buf)
421            return NULL;
422    
423        /* Fill buffer. */
424        jschar *ptr = buf;
425        for (uint32 i = 0; i < size; ++i) {
426            const jschar *chars;
427            size_t length;
428            strArray[i]->getCharsAndLength(chars, length);
429            js_strncpy(ptr, chars, length);
430            ptr += length;
431        }
432        *ptr = '\0';
433    
434        /* Create string. */
435        JSString *str = js_NewString(cx, buf, numChar - 1);
436        if (!str)
437            cx->free(buf);
438        return str;
439    }
440    JS_DEFINE_CALLINFO_3(extern, STRING, js_ConcatN, CONTEXT, STRINGPTR, UINT32, 0, 0)
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