Native context: install JS builtins via container object.

src/runtime.js

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This files contains runtime support implemented in JavaScript.
 
 // CAUTION: Some of the functions specified in this file are called
 // directly from compiled code. These are the functions with names in
 // ALL CAPS. The compiled code passes the first argument in 'this'.
 
 
-/* -----------------------------------
-   - - -   C o m p a r i s o n   - - -
-   -----------------------------------
-*/
-
 // The following declarations are shared with other native JS files.
 // They are all declared at this one spot to avoid redeclaration errors.
-var EQUALS;
-var STRICT_EQUALS;
-var COMPARE;
-var COMPARE_STRONG;
-var ADD;
-var ADD_STRONG;
-var STRING_ADD_LEFT;
-var STRING_ADD_RIGHT;
-var SUB;
-var SUB_STRONG;
-var MUL;
-var MUL_STRONG;
-var DIV;
-var DIV_STRONG;
-var MOD;
-var MOD_STRONG;
-var BIT_OR;
-var BIT_OR_STRONG;
-var BIT_AND;
-var BIT_AND_STRONG;
-var BIT_XOR;
-var BIT_XOR_STRONG;
-var SHL;
-var SHL_STRONG;
-var SAR;
-var SAR_STRONG;
-var SHR;
-var SHR_STRONG;
-var IN;
-var INSTANCE_OF;
-var CALL_NON_FUNCTION;
-var CALL_NON_FUNCTION_AS_CONSTRUCTOR;
-var CALL_FUNCTION_PROXY;
-var CALL_FUNCTION_PROXY_AS_CONSTRUCTOR;
-var CONCAT_ITERABLE_TO_ARRAY;
-var APPLY_PREPARE;
-var REFLECT_APPLY_PREPARE;
-var REFLECT_CONSTRUCT_PREPARE;
-var STACK_OVERFLOW;
-var TO_NUMBER;
-var TO_STRING;
-var TO_NAME;
-
 var $defaultNumber;
 var $defaultString;
 var $NaN;
 var $nonNumberToNumber;
 var $nonStringToString;
 var $sameValue;
 var $sameValueZero;
 var $toBoolean;
 var $toInteger;
 var $toLength;
 var $toName;
 var $toNumber;
 var $toPositiveInteger;
 var $toPrimitive;
 var $toString;
 
 (function(global, utils) {
 
 %CheckIsBootstrapping();
 
 var GlobalArray = global.Array;
 var GlobalBoolean = global.Boolean;
 var GlobalString = global.String;
 var GlobalNumber = global.Number;
 
 // ----------------------------------------------------------------------------
 
+/* -----------------------------------
+- - -   C o m p a r i s o n   - - -
+-----------------------------------
+*/
+
 // ECMA-262 Section 11.9.3.
-EQUALS = function EQUALS(y) {
+function EQUALS(y) {
   if (IS_STRING(this) && IS_STRING(y)) return %StringEquals(this, y);
   var x = this;
 
   while (true) {
     if (IS_NUMBER(x)) {
       while (true) {
         if (IS_NUMBER(y)) return %NumberEquals(x, y);
         if (IS_NULL_OR_UNDEFINED(y)) return 1;  // not equal
         if (!IS_SPEC_OBJECT(y)) {
           if (IS_SYMBOL(y) || IS_SIMD_VALUE(y)) return 1;  // not equal
@@ skipping 38 matching lines @@
         return 1;  // not equal
       }
       x = %$toPrimitive(x, NO_HINT);
     }
   }
 }
 
 
 // ECMA-262, section 11.8.5, page 53. The 'ncr' parameter is used as
 // the result when either (or both) the operands are NaN.
-COMPARE = function COMPARE(x, ncr) {
+function COMPARE(x, ncr) {
   var left;
   var right;
   // Fast cases for string, numbers and undefined compares.
   if (IS_STRING(this)) {
     if (IS_STRING(x)) return %_StringCompare(this, x);
     if (IS_UNDEFINED(x)) return ncr;
     left = this;
   } else if (IS_NUMBER(this)) {
     if (IS_NUMBER(x)) return %NumberCompare(this, x, ncr);
     if (IS_UNDEFINED(x)) return ncr;
@@ skipping 15 matching lines @@
     return %_StringCompare(left, right);
   } else {
     var left_number = %$toNumber(left);
     var right_number = %$toNumber(right);
     if (NUMBER_IS_NAN(left_number) || NUMBER_IS_NAN(right_number)) return ncr;
     return %NumberCompare(left_number, right_number, ncr);
   }
 }
 
 // Strong mode COMPARE throws if an implicit conversion would be performed
-COMPARE_STRONG = function COMPARE_STRONG(x, ncr) {
+function COMPARE_STRONG(x, ncr) {
   if (IS_STRING(this) && IS_STRING(x)) return %_StringCompare(this, x);
   if (IS_NUMBER(this) && IS_NUMBER(x)) return %NumberCompare(this, x, ncr);
 
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 
 /* -----------------------------------
    - - -   A r i t h m e t i c   - - -
    -----------------------------------
 */
 
 // ECMA-262, section 11.6.1, page 50.
-ADD = function ADD(x) {
+function ADD(x) {
   // Fast case: Check for number operands and do the addition.
   if (IS_NUMBER(this) && IS_NUMBER(x)) return %NumberAdd(this, x);
   if (IS_STRING(this) && IS_STRING(x)) return %_StringAdd(this, x);
 
   // Default implementation.
   var a = %$toPrimitive(this, NO_HINT);
   var b = %$toPrimitive(x, NO_HINT);
 
   if (IS_STRING(a)) {
     return %_StringAdd(a, %$toString(b));
   } else if (IS_STRING(b)) {
     return %_StringAdd(%$nonStringToString(a), b);
   } else {
     return %NumberAdd(%$toNumber(a), %$toNumber(b));
   }
 }
 
 
 // Strong mode ADD throws if an implicit conversion would be performed
-ADD_STRONG = function ADD_STRONG(x) {
+function ADD_STRONG(x) {
   if (IS_NUMBER(this) && IS_NUMBER(x)) return %NumberAdd(this, x);
   if (IS_STRING(this) && IS_STRING(x)) return %_StringAdd(this, x);
 
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // Left operand (this) is already a string.
-STRING_ADD_LEFT = function STRING_ADD_LEFT(y) {
+function STRING_ADD_LEFT(y) {
   if (!IS_STRING(y)) {
     if (IS_STRING_WRAPPER(y) && %_IsStringWrapperSafeForDefaultValueOf(y)) {
       y = %_ValueOf(y);
     } else {
       y = IS_NUMBER(y)
           ? %_NumberToString(y)
           : %$toString(%$toPrimitive(y, NO_HINT));
     }
   }
   return %_StringAdd(this, y);
 }
 
 
 // Right operand (y) is already a string.
-STRING_ADD_RIGHT = function STRING_ADD_RIGHT(y) {
+function STRING_ADD_RIGHT(y) {
   var x = this;
   if (!IS_STRING(x)) {
     if (IS_STRING_WRAPPER(x) && %_IsStringWrapperSafeForDefaultValueOf(x)) {
       x = %_ValueOf(x);
     } else {
       x = IS_NUMBER(x)
           ? %_NumberToString(x)
           : %$toString(%$toPrimitive(x, NO_HINT));
     }
   }
   return %_StringAdd(x, y);
 }
 
 
 // ECMA-262, section 11.6.2, page 50.
-SUB = function SUB(y) {
+function SUB(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberSub(x, y);
 }
 
 
 // Strong mode SUB throws if an implicit conversion would be performed
-SUB_STRONG = function SUB_STRONG(y) {
+function SUB_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberSub(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.5.1, page 48.
-MUL = function MUL(y) {
+function MUL(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberMul(x, y);
 }
 
 
 // Strong mode MUL throws if an implicit conversion would be performed
-MUL_STRONG = function MUL_STRONG(y) {
+function MUL_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberMul(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.5.2, page 49.
-DIV = function DIV(y) {
+function DIV(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberDiv(x, y);
 }
 
 
 // Strong mode DIV throws if an implicit conversion would be performed
-DIV_STRONG = function DIV_STRONG(y) {
+function DIV_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberDiv(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.5.3, page 49.
-MOD = function MOD(y) {
+function MOD(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberMod(x, y);
 }
 
 
 // Strong mode MOD throws if an implicit conversion would be performed
-MOD_STRONG = function MOD_STRONG(y) {
+function MOD_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberMod(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 /* -------------------------------------------
    - - -   B i t   o p e r a t i o n s   - - -
    -------------------------------------------
 */
 
 // ECMA-262, section 11.10, page 57.
-BIT_OR = function BIT_OR(y) {
+function BIT_OR(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberOr(x, y);
 }
 
 
 // Strong mode BIT_OR throws if an implicit conversion would be performed
-BIT_OR_STRONG = function BIT_OR_STRONG(y) {
+function BIT_OR_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberOr(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.10, page 57.
-BIT_AND = function BIT_AND(y) {
+function BIT_AND(y) {
   var x;
   if (IS_NUMBER(this)) {
     x = this;
     if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   } else {
     x = %$nonNumberToNumber(this);
     // Make sure to convert the right operand to a number before
     // bailing out in the fast case, but after converting the
     // left operand. This ensures that valueOf methods on the right
     // operand are always executed.
     if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
     // Optimize for the case where we end up AND'ing a value
     // that doesn't convert to a number. This is common in
     // certain benchmarks.
     if (NUMBER_IS_NAN(x)) return 0;
   }
   return %NumberAnd(x, y);
 }
 
 
 // Strong mode BIT_AND throws if an implicit conversion would be performed
-BIT_AND_STRONG = function BIT_AND_STRONG(y) {
+function BIT_AND_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberAnd(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.10, page 57.
-BIT_XOR = function BIT_XOR(y) {
+function BIT_XOR(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberXor(x, y);
 }
 
 
 // Strong mode BIT_XOR throws if an implicit conversion would be performed
-BIT_XOR_STRONG = function BIT_XOR_STRONG(y) {
+function BIT_XOR_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberXor(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.7.1, page 51.
-SHL = function SHL(y) {
+function SHL(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberShl(x, y);
 }
 
 
 // Strong mode SHL throws if an implicit conversion would be performed
-SHL_STRONG = function SHL_STRONG(y) {
+function SHL_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberShl(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.7.2, page 51.
-SAR = function SAR(y) {
+function SAR(y) {
   var x;
   if (IS_NUMBER(this)) {
     x = this;
     if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   } else {
     x = %$nonNumberToNumber(this);
     // Make sure to convert the right operand to a number before
     // bailing out in the fast case, but after converting the
     // left operand. This ensures that valueOf methods on the right
     // operand are always executed.
     if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
     // Optimize for the case where we end up shifting a value
     // that doesn't convert to a number. This is common in
     // certain benchmarks.
     if (NUMBER_IS_NAN(x)) return 0;
   }
   return %NumberSar(x, y);
 }
 
 
 // Strong mode SAR throws if an implicit conversion would be performed
-SAR_STRONG = function SAR_STRONG(y) {
+function SAR_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberSar(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 // ECMA-262, section 11.7.3, page 52.
-SHR = function SHR(y) {
+function SHR(y) {
   var x = IS_NUMBER(this) ? this : %$nonNumberToNumber(this);
   if (!IS_NUMBER(y)) y = %$nonNumberToNumber(y);
   return %NumberShr(x, y);
 }
 
 
 // Strong mode SHR throws if an implicit conversion would be performed
-SHR_STRONG = function SHR_STRONG(y) {
+function SHR_STRONG(y) {
   if (IS_NUMBER(this) && IS_NUMBER(y)) {
     return %NumberShr(this, y);
   }
   throw %MakeTypeError(kStrongImplicitConversion);
 }
 
 
 /* -----------------------------
    - - -   H e l p e r s   - - -
    -----------------------------
 */
 
 // ECMA-262, section 11.8.7, page 54.
-IN = function IN(x) {
+function IN(x) {
   if (!IS_SPEC_OBJECT(x)) {
     throw %MakeTypeError(kInvalidInOperatorUse, this, x);
   }
   if (%_IsNonNegativeSmi(this)) {
     if (IS_ARRAY(x) && %_HasFastPackedElements(x)) {
       return this < x.length;
     }
     return %HasElement(x, this);
   }
   return %HasProperty(x, %$toName(this));
 }
 
 
 // ECMA-262, section 11.8.6, page 54. To make the implementation more
 // efficient, the return value should be zero if the 'this' is an
 // instance of F, and non-zero if not. This makes it possible to avoid
 // an expensive ToBoolean conversion in the generated code.
-INSTANCE_OF = function INSTANCE_OF(F) {
+function INSTANCE_OF(F) {
   var V = this;
   if (!IS_SPEC_FUNCTION(F)) {
     throw %MakeTypeError(kInstanceofFunctionExpected, F);
   }
 
   // If V is not an object, return false.
   if (!IS_SPEC_OBJECT(V)) {
     return 1;
   }
 
   // Check if function is bound, if so, get [[BoundFunction]] from it
   // and use that instead of F.
   var bindings = %BoundFunctionGetBindings(F);
   if (bindings) {
     F = bindings[kBoundFunctionIndex];  // Always a non-bound function.
   }
   // Get the prototype of F; if it is not an object, throw an error.
   var O = F.prototype;
   if (!IS_SPEC_OBJECT(O)) {
     throw %MakeTypeError(kInstanceofNonobjectProto, O);
   }
 
   // Return whether or not O is in the prototype chain of V.
   return %IsInPrototypeChain(O, V) ? 0 : 1;
 }
 
 
-CALL_NON_FUNCTION = function CALL_NON_FUNCTION() {
+function CALL_NON_FUNCTION() {
   var delegate = %GetFunctionDelegate(this);
   if (!IS_FUNCTION(delegate)) {
     var callsite = %RenderCallSite();
     if (callsite == "") callsite = typeof this;
     throw %MakeTypeError(kCalledNonCallable, callsite);
   }
   return %Apply(delegate, this, arguments, 0, %_ArgumentsLength());
 }
 
 
-CALL_NON_FUNCTION_AS_CONSTRUCTOR = function CALL_NON_FUNCTION_AS_CONSTRUCTOR() {
+function CALL_NON_FUNCTION_AS_CONSTRUCTOR() {
   var delegate = %GetConstructorDelegate(this);
   if (!IS_FUNCTION(delegate)) {
     var callsite = %RenderCallSite();
     if (callsite == "") callsite = typeof this;
     throw %MakeTypeError(kCalledNonCallable, callsite);
   }
   return %Apply(delegate, this, arguments, 0, %_ArgumentsLength());
 }
 
 
-CALL_FUNCTION_PROXY = function CALL_FUNCTION_PROXY() {
+function CALL_FUNCTION_PROXY() {
   var arity = %_ArgumentsLength() - 1;
   var proxy = %_Arguments(arity);  // The proxy comes in as an additional arg.
   var trap = %GetCallTrap(proxy);
   return %Apply(trap, this, arguments, 0, arity);
 }
 
 
-CALL_FUNCTION_PROXY_AS_CONSTRUCTOR =
-    function CALL_FUNCTION_PROXY_AS_CONSTRUCTOR () {
+function CALL_FUNCTION_PROXY_AS_CONSTRUCTOR () {
   var proxy = this;
   var trap = %GetConstructTrap(proxy);
   return %Apply(trap, this, arguments, 0, %_ArgumentsLength());
 }
 
 
-APPLY_PREPARE = function APPLY_PREPARE(args) {
+function APPLY_PREPARE(args) {
   var length;
   // First check whether length is a positive Smi and args is an
   // array. This is the fast case. If this fails, we do the slow case
   // that takes care of more eventualities.
   if (IS_ARRAY(args)) {
     length = args.length;
     if (%_IsSmi(length) && length >= 0 && length < kSafeArgumentsLength &&
         IS_SPEC_FUNCTION(this)) {
       return length;
     }
@@ skipping 14 matching lines @@
   if (args != null && !IS_SPEC_OBJECT(args)) {
     throw %MakeTypeError(kWrongArgs, "Function.prototype.apply");
   }
 
   // Return the length which is the number of arguments to copy to the
   // stack. It is guaranteed to be a small integer at this point.
   return length;
 }
 
 
-REFLECT_APPLY_PREPARE = function REFLECT_APPLY_PREPARE(args) {
+function REFLECT_APPLY_PREPARE(args) {
   var length;
   // First check whether length is a positive Smi and args is an
   // array. This is the fast case. If this fails, we do the slow case
   // that takes care of more eventualities.
   if (IS_ARRAY(args)) {
     length = args.length;
     if (%_IsSmi(length) && length >= 0 && length < kSafeArgumentsLength &&
         IS_SPEC_FUNCTION(this)) {
       return length;
     }
@@ skipping 13 matching lines @@
   // big enough, but sanity check the value to avoid overflow when
   // multiplying with pointer size.
   if (length > kSafeArgumentsLength) throw %MakeRangeError(kStackOverflow);
 
   // Return the length which is the number of arguments to copy to the
   // stack. It is guaranteed to be a small integer at this point.
   return length;
 }
 
 
-REFLECT_CONSTRUCT_PREPARE = function REFLECT_CONSTRUCT_PREPARE(
+function REFLECT_CONSTRUCT_PREPARE(
     args, newTarget) {
   var length;
   var ctorOk = IS_SPEC_FUNCTION(this) && %IsConstructor(this);
   var newTargetOk = IS_SPEC_FUNCTION(newTarget) && %IsConstructor(newTarget);
 
   // First check whether length is a positive Smi and args is an
   // array. This is the fast case. If this fails, we do the slow case
   // that takes care of more eventualities.
   if (IS_ARRAY(args)) {
     length = args.length;
@@ skipping 29 matching lines @@
   // big enough, but sanity check the value to avoid overflow when
   // multiplying with pointer size.
   if (length > kSafeArgumentsLength) throw %MakeRangeError(kStackOverflow);
 
   // Return the length which is the number of arguments to copy to the
   // stack. It is guaranteed to be a small integer at this point.
   return length;
 }
 
 
-CONCAT_ITERABLE_TO_ARRAY = function CONCAT_ITERABLE_TO_ARRAY(iterable) {
+function CONCAT_ITERABLE_TO_ARRAY(iterable) {
   return %$concatIterableToArray(this, iterable);
 };
 
 
-STACK_OVERFLOW = function STACK_OVERFLOW(length) {
+function STACK_OVERFLOW(length) {
   throw %MakeRangeError(kStackOverflow);
 }
 
 
 // Convert the receiver to a number - forward to ToNumber.
-TO_NUMBER = function TO_NUMBER() {
+function TO_NUMBER() {
   return %$toNumber(this);
 }
 
 
 // Convert the receiver to a string - forward to ToString.
-TO_STRING = function TO_STRING() {
+function TO_STRING() {
   return %$toString(this);
 }
 
 
 // Convert the receiver to a string or symbol - forward to ToName.
-TO_NAME = function TO_NAME() {
+function TO_NAME() {
   return %$toName(this);
 }
 
 
 /* -------------------------------------
    - - -   C o n v e r s i o n s   - - -
    -------------------------------------
 */
 
 // ECMA-262, section 9.1, page 30. Use null/undefined for no hint,
@@ skipping 204 matching lines @@
 $sameValueZero = SameValueZero;
 $toBoolean = ToBoolean;
 $toInteger = ToInteger;
 $toLength = ToLength;
 $toName = ToName;
 $toNumber = ToNumber;
 $toPositiveInteger = ToPositiveInteger;
 $toPrimitive = ToPrimitive;
 $toString = ToString;
 
+%InstallJSBuiltins({
+  EQUALS,
+  COMPARE,
+  COMPARE_STRONG,
+  ADD,
+  ADD_STRONG,
+  STRING_ADD_LEFT,
+  STRING_ADD_RIGHT,
+  SUB,
+  SUB_STRONG,
+  MUL,
+  MUL_STRONG,
+  DIV,
+  DIV_STRONG,
+  MOD,
+  MOD_STRONG,
+  BIT_OR,
+  BIT_OR_STRONG,
+  BIT_AND,
+  BIT_AND_STRONG,
+  BIT_XOR,
+  BIT_XOR_STRONG,
+  SHL,
+  SHL_STRONG,
+  SAR,
+  SAR_STRONG,
+  SHR,
+  SHR_STRONG,
+  IN,
+  INSTANCE_OF,
+  CALL_NON_FUNCTION,
+  CALL_NON_FUNCTION_AS_CONSTRUCTOR,
+  CALL_FUNCTION_PROXY,
+  CALL_FUNCTION_PROXY_AS_CONSTRUCTOR,
+  CONCAT_ITERABLE_TO_ARRAY,
+  APPLY_PREPARE,
+  REFLECT_APPLY_PREPARE,
+  REFLECT_CONSTRUCT_PREPARE,
+  STACK_OVERFLOW,
+  TO_NUMBER,
+  TO_STRING,
+  TO_NAME,
+});
+
 utils.ExportToRuntime(function(to) {
   to.ToNumber = $toNumber;
   to.ToString = $toString;
   to.ToInteger = $toInteger;
   to.ToLength = $toLength;
 });
 
 })