1c2d96a428
(More work is needed to conform to ECMA ed. 3 by removing Closure objects; also we want more efficient closure calling, soon.) - Move mislocated call to js_FoldConstants from jsemit.c's js_EmitTree, the TOK_FUNCTION case, back to jsparse.c. This avoids redundant fold-walks over non-top-level functions. Folding should be done at tree-gen time, not at code-gen time. - Eliminate dead code in if-else and ?: when folding constants. - Release tempPool arena space before early return on error in js_FoldConstants, just to be nice (all arena space gets released eventually, when the compiler finishes). git-svn-id: svn://10.0.0.236/trunk@53898 18797224-902f-48f8-a5cc-f745e15eee43
383 lines
25 KiB
C
383 lines
25 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the NPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the NPL or the GPL.
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*/
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/*
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* JS configuration macros.
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*/
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#ifndef JS_VERSION
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#define JS_VERSION 150
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#endif
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#if JS_VERSION == 100
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#define JS_BUG_AUTO_INDEX_PROPS 1 /* new object o: o.p = v sets o[0] */
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#define JS_BUG_NULL_INDEX_PROPS 1 /* o[0] defaults to null, not void */
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#define JS_BUG_EMPTY_INDEX_ZERO 1 /* o[""] is equivalent to o[0] */
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#define JS_BUG_SHORT_CIRCUIT 1 /* 1 && 1 => true, 1 && 0 => 0 bug */
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#define JS_BUG_EAGER_TOSTRING 1 /* o.toString() trumps o.valueOf() */
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#define JS_BUG_VOID_TOSTRING 0 /* void 0 + 0 == "undefined0" */
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#define JS_BUG_EVAL_THIS_FUN 0 /* eval('this') in function f is f */
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#define JS_BUG_EVAL_THIS_SCOPE 0 /* Math.eval('sin(x)') vs. local x */
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#define JS_BUG_FALLIBLE_EQOPS 1 /* fallible/intransitive equality ops */
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#define JS_BUG_FALLIBLE_TONUM 1 /* fallible ValueToNumber primitive */
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#define JS_BUG_WITH_CLOSURE 0 /* with(o)function f(){} sets o.f */
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#define JS_BUG_SET_ENUMERATE 1 /* o.p=q flags o.p JSPROP_ENUMERATE */
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#define JS_HAS_PROP_DELETE 0 /* delete o.p removes p from o */
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#define JS_HAS_CALL_OBJECT 0 /* fun.caller is stack frame obj */
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#define JS_HAS_LABEL_STATEMENT 0 /* has break/continue to label: */
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#define JS_HAS_DO_WHILE_LOOP 0 /* has do {...} while (b) */
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#define JS_HAS_SWITCH_STATEMENT 0 /* has switch (v) {case c: ...} */
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#define JS_HAS_SOME_PERL_FUN 0 /* has array.join/reverse/sort */
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#define JS_HAS_MORE_PERL_FUN 0 /* has array.push, str.substr, etc */
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#define JS_HAS_VALUEOF_HINT 0 /* valueOf(hint) where hint is typeof */
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#define JS_HAS_LEXICAL_CLOSURE 0 /* nested functions, lexically closed */
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#define JS_HAS_APPLY_FUNCTION 0 /* has fun.apply(obj, argArray) */
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#define JS_HAS_CALL_FUNCTION 0 /* has fun.call(obj, arg1, ... argN) */
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#define JS_HAS_OBJ_PROTO_PROP 0 /* has o.__proto__ etc. */
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#define JS_HAS_REGEXPS 0 /* has perl r.e.s via RegExp, /pat/ */
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#define JS_HAS_SEQUENCE_OPS 0 /* has array.slice, string.concat */
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#define JS_HAS_INITIALIZERS 0 /* has var o = {'foo': 42, 'bar':3} */
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#define JS_HAS_OBJ_WATCHPOINT 0 /* has o.watch and o.unwatch */
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#define JS_HAS_EXPORT_IMPORT 0 /* has export fun; import obj.fun */
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#define JS_HAS_EVAL_THIS_SCOPE 0 /* Math.eval is same as with (Math) */
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#define JS_HAS_TRIPLE_EQOPS 0 /* has === and !== identity eqops */
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#define JS_HAS_SHARP_VARS 0 /* has #n=, #n# for object literals */
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#define JS_HAS_REPLACE_LAMBDA 0 /* has string.replace(re, lambda) */
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#define JS_HAS_SCRIPT_OBJECT 0 /* has (new Script("x++")).exec() */
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#define JS_HAS_XDR 0 /* has XDR API and object methods */
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#define JS_HAS_EXCEPTIONS 0 /* has exception handling */
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#define JS_HAS_UNDEFINED 0 /* has global "undefined" property */
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#define JS_HAS_TOSOURCE 0 /* has Object/Array toSource method */
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#define JS_HAS_IN_OPERATOR 0 /* has in operator ('p' in {p:1}) */
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#define JS_HAS_INSTANCEOF 0 /* has {p:1} instanceof Object */
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#define JS_HAS_ARGS_OBJECT 0 /* has minimal ECMA arguments object */
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#define JS_HAS_DEBUGGER_KEYWORD 0 /* has hook for debugger keyword */
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#define JS_HAS_ERROR_EXCEPTIONS 0 /* has error object hierarchy */
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#define JS_HAS_CATCH_GUARD 0 /* has exception handling catch guard */
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#define JS_HAS_NEW_OBJ_METHODS 0 /* has Object.prototype query methods */
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#define JS_HAS_SPARSE_ARRAYS 0 /* array methods preserve empty elems */
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#define JS_HAS_DFLT_MSG_STRINGS 1 /* provides English error messages */
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#define JS_HAS_NUMBER_FORMATS 0 /* numbers have formatting methods */
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#define JS_HAS_GETTER_SETTER 0 /* has JS2 getter/setter functions */
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#define JS_HAS_UNEVAL 0 /* has uneval() top-level function */
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#define JS_HAS_CONST 0 /* has JS2 const as alternative var */
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#define JS_HAS_FUN_EXPR_STMT 0 /* has function expression statement */
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#elif JS_VERSION == 110
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#define JS_BUG_AUTO_INDEX_PROPS 0 /* new object o: o.p = v sets o[0] */
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#define JS_BUG_NULL_INDEX_PROPS 1 /* o[0] defaults to null, not void */
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#define JS_BUG_EMPTY_INDEX_ZERO 1 /* o[""] is equivalent to o[0] */
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#define JS_BUG_SHORT_CIRCUIT 1 /* 1 && 1 => true, 1 && 0 => 0 bug */
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#define JS_BUG_EAGER_TOSTRING 1 /* o.toString() trumps o.valueOf() */
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#define JS_BUG_VOID_TOSTRING 0 /* void 0 + 0 == "undefined0" */
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#define JS_BUG_EVAL_THIS_FUN 1 /* eval('this') in function f is f */
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#define JS_BUG_EVAL_THIS_SCOPE 1 /* Math.eval('sin(x)') vs. local x */
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#define JS_BUG_FALLIBLE_EQOPS 1 /* fallible/intransitive equality ops */
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#define JS_BUG_FALLIBLE_TONUM 1 /* fallible ValueToNumber primitive */
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#define JS_BUG_WITH_CLOSURE 0 /* with(o)function f(){} sets o.f */
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#define JS_BUG_SET_ENUMERATE 1 /* o.p=q flags o.p JSPROP_ENUMERATE */
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#define JS_HAS_PROP_DELETE 0 /* delete o.p removes p from o */
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#define JS_HAS_CALL_OBJECT 0 /* fun.caller is stack frame obj */
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#define JS_HAS_LABEL_STATEMENT 0 /* has break/continue to label: */
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#define JS_HAS_DO_WHILE_LOOP 0 /* has do {...} while (b) */
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#define JS_HAS_SWITCH_STATEMENT 0 /* has switch (v) {case c: ...} */
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#define JS_HAS_SOME_PERL_FUN 1 /* has array.join/reverse/sort */
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#define JS_HAS_MORE_PERL_FUN 0 /* has array.push, str.substr, etc */
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#define JS_HAS_VALUEOF_HINT 0 /* valueOf(hint) where hint is typeof */
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#define JS_HAS_LEXICAL_CLOSURE 0 /* nested functions, lexically closed */
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#define JS_HAS_APPLY_FUNCTION 0 /* has apply(fun, arg1, ... argN) */
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#define JS_HAS_CALL_FUNCTION 0 /* has fun.call(obj, arg1, ... argN) */
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#define JS_HAS_OBJ_PROTO_PROP 0 /* has o.__proto__ etc. */
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#define JS_HAS_REGEXPS 0 /* has perl r.e.s via RegExp, /pat/ */
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#define JS_HAS_SEQUENCE_OPS 0 /* has array.slice, string.concat */
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#define JS_HAS_INITIALIZERS 0 /* has var o = {'foo': 42, 'bar':3} */
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#define JS_HAS_OBJ_WATCHPOINT 0 /* has o.watch and o.unwatch */
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#define JS_HAS_EXPORT_IMPORT 0 /* has export fun; import obj.fun */
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#define JS_HAS_EVAL_THIS_SCOPE 0 /* Math.eval is same as with (Math) */
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#define JS_HAS_TRIPLE_EQOPS 0 /* has === and !== identity eqops */
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#define JS_HAS_SHARP_VARS 0 /* has #n=, #n# for object literals */
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#define JS_HAS_REPLACE_LAMBDA 0 /* has string.replace(re, lambda) */
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#define JS_HAS_SCRIPT_OBJECT 0 /* has (new Script("x++")).exec() */
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#define JS_HAS_XDR 0 /* has XDR API and object methods */
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#define JS_HAS_EXCEPTIONS 0 /* has exception handling */
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#define JS_HAS_UNDEFINED 0 /* has global "undefined" property */
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#define JS_HAS_TOSOURCE 0 /* has Object/Array toSource method */
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#define JS_HAS_IN_OPERATOR 0 /* has in operator ('p' in {p:1}) */
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#define JS_HAS_INSTANCEOF 0 /* has {p:1} instanceof Object */
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#define JS_HAS_ARGS_OBJECT 0 /* has minimal ECMA arguments object */
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#define JS_HAS_DEBUGGER_KEYWORD 0 /* has hook for debugger keyword */
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#define JS_HAS_ERROR_EXCEPTIONS 0 /* has error object hierarchy */
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#define JS_HAS_CATCH_GUARD 0 /* has exception handling catch guard */
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#define JS_HAS_NEW_OBJ_METHODS 0 /* has Object.prototype query methods */
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#define JS_HAS_SPARSE_ARRAYS 0 /* array methods preserve empty elems */
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#define JS_HAS_DFLT_MSG_STRINGS 1 /* provides English error messages */
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#define JS_HAS_NUMBER_FORMATS 0 /* numbers have formatting methods */
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#define JS_HAS_GETTER_SETTER 0 /* has JS2 getter/setter functions */
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#define JS_HAS_UNEVAL 0 /* has uneval() top-level function */
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#define JS_HAS_CONST 0 /* has JS2 const as alternative var */
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#define JS_HAS_FUN_EXPR_STMT 0 /* has function expression statement */
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#elif JS_VERSION == 120
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#define JS_BUG_AUTO_INDEX_PROPS 0 /* new object o: o.p = v sets o[0] */
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#define JS_BUG_NULL_INDEX_PROPS 0 /* o[0] defaults to null, not void */
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#define JS_BUG_EMPTY_INDEX_ZERO 0 /* o[""] is equivalent to o[0] */
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#define JS_BUG_SHORT_CIRCUIT 0 /* 1 && 1 => true, 1 && 0 => 0 bug */
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#define JS_BUG_EAGER_TOSTRING 0 /* o.toString() trumps o.valueOf() */
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#define JS_BUG_VOID_TOSTRING 1 /* void 0 + 0 == "undefined0" */
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#define JS_BUG_EVAL_THIS_FUN 0 /* eval('this') in function f is f */
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#define JS_BUG_EVAL_THIS_SCOPE 0 /* Math.eval('sin(x)') vs. local x */
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#define JS_BUG_FALLIBLE_EQOPS 0 /* fallible/intransitive equality ops */
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#define JS_BUG_FALLIBLE_TONUM 0 /* fallible ValueToNumber primitive */
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#define JS_BUG_WITH_CLOSURE 1 /* with(o)function f(){} sets o.f */
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#define JS_BUG_SET_ENUMERATE 1 /* o.p=q flags o.p JSPROP_ENUMERATE */
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#define JS_HAS_PROP_DELETE 1 /* delete o.p removes p from o */
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#define JS_HAS_CALL_OBJECT 1 /* fun.caller is stack frame obj */
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#define JS_HAS_LABEL_STATEMENT 1 /* has break/continue to label: */
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#define JS_HAS_DO_WHILE_LOOP 1 /* has do {...} while (b) */
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#define JS_HAS_SWITCH_STATEMENT 1 /* has switch (v) {case c: ...} */
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#define JS_HAS_SOME_PERL_FUN 1 /* has array.join/reverse/sort */
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#define JS_HAS_MORE_PERL_FUN 1 /* has array.push, str.substr, etc */
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#define JS_HAS_VALUEOF_HINT 1 /* valueOf(hint) where hint is typeof */
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#define JS_HAS_LEXICAL_CLOSURE 1 /* nested functions, lexically closed */
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#define JS_HAS_APPLY_FUNCTION 1 /* has apply(fun, arg1, ... argN) */
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#define JS_HAS_CALL_FUNCTION 0 /* has fun.call(obj, arg1, ... argN) */
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#define JS_HAS_OBJ_PROTO_PROP 1 /* has o.__proto__ etc. */
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#define JS_HAS_REGEXPS 1 /* has perl r.e.s via RegExp, /pat/ */
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#define JS_HAS_SEQUENCE_OPS 1 /* has array.slice, string.concat */
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#define JS_HAS_INITIALIZERS 1 /* has var o = {'foo': 42, 'bar':3} */
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#define JS_HAS_OBJ_WATCHPOINT 1 /* has o.watch and o.unwatch */
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#define JS_HAS_EXPORT_IMPORT 1 /* has export fun; import obj.fun */
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#define JS_HAS_EVAL_THIS_SCOPE 1 /* Math.eval is same as with (Math) */
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#define JS_HAS_TRIPLE_EQOPS 0 /* has === and !== identity eqops */
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#define JS_HAS_SHARP_VARS 0 /* has #n=, #n# for object literals */
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#define JS_HAS_REPLACE_LAMBDA 0 /* has string.replace(re, lambda) */
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#define JS_HAS_SCRIPT_OBJECT 0 /* has (new Script("x++")).exec() */
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#define JS_HAS_XDR 0 /* has XDR API and object methods */
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#define JS_HAS_EXCEPTIONS 0 /* has exception handling */
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#define JS_HAS_UNDEFINED 0 /* has global "undefined" property */
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#define JS_HAS_TOSOURCE 0 /* has Object/Array toSource method */
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#define JS_HAS_IN_OPERATOR 0 /* has in operator ('p' in {p:1}) */
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#define JS_HAS_INSTANCEOF 0 /* has {p:1} instanceof Object */
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#define JS_HAS_ARGS_OBJECT 0 /* has minimal ECMA arguments object */
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#define JS_HAS_DEBUGGER_KEYWORD 0 /* has hook for debugger keyword */
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#define JS_HAS_ERROR_EXCEPTIONS 0 /* has error object hierarchy */
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#define JS_HAS_CATCH_GUARD 0 /* has exception handling catch guard */
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#define JS_HAS_NEW_OBJ_METHODS 0 /* has Object.prototype query methods */
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#define JS_HAS_SPARSE_ARRAYS 0 /* array methods preserve empty elems */
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#define JS_HAS_DFLT_MSG_STRINGS 1 /* provides English error messages */
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#define JS_HAS_NUMBER_FORMATS 0 /* numbers have formatting methods */
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#define JS_HAS_GETTER_SETTER 0 /* has JS2 getter/setter functions */
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#define JS_HAS_UNEVAL 0 /* has uneval() top-level function */
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#define JS_HAS_CONST 0 /* has JS2 const as alternative var */
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#define JS_HAS_FUN_EXPR_STMT 0 /* has function expression statement */
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#elif JS_VERSION == 130
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#define JS_BUG_AUTO_INDEX_PROPS 0 /* new object o: o.p = v sets o[0] */
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#define JS_BUG_NULL_INDEX_PROPS 0 /* o[0] defaults to null, not void */
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#define JS_BUG_EMPTY_INDEX_ZERO 0 /* o[""] is equivalent to o[0] */
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#define JS_BUG_SHORT_CIRCUIT 0 /* 1 && 1 => true, 1 && 0 => 0 bug */
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#define JS_BUG_EAGER_TOSTRING 0 /* o.toString() trumps o.valueOf() */
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#define JS_BUG_VOID_TOSTRING 0 /* void 0 + 0 == "undefined0" */
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#define JS_BUG_EVAL_THIS_FUN 0 /* eval('this') in function f is f */
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#define JS_BUG_EVAL_THIS_SCOPE 0 /* Math.eval('sin(x)') vs. local x */
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#define JS_BUG_FALLIBLE_EQOPS 0 /* fallible/intransitive equality ops */
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#define JS_BUG_FALLIBLE_TONUM 0 /* fallible ValueToNumber primitive */
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#define JS_BUG_WITH_CLOSURE 1 /* with(o)function f(){} sets o.f */
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#define JS_BUG_SET_ENUMERATE 0 /* o.p=q flags o.p JSPROP_ENUMERATE */
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#define JS_HAS_PROP_DELETE 1 /* delete o.p removes p from o */
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#define JS_HAS_CALL_OBJECT 1 /* fun.caller is stack frame obj */
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#define JS_HAS_LABEL_STATEMENT 1 /* has break/continue to label: */
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#define JS_HAS_DO_WHILE_LOOP 1 /* has do {...} while (b) */
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#define JS_HAS_SWITCH_STATEMENT 1 /* has switch (v) {case c: ...} */
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#define JS_HAS_SOME_PERL_FUN 1 /* has array.join/reverse/sort */
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#define JS_HAS_MORE_PERL_FUN 1 /* has array.push, str.substr, etc */
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#define JS_HAS_VALUEOF_HINT 1 /* valueOf(hint) where hint is typeof */
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#define JS_HAS_LEXICAL_CLOSURE 1 /* nested functions, lexically closed */
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#define JS_HAS_APPLY_FUNCTION 1 /* has apply(fun, arg1, ... argN) */
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#define JS_HAS_CALL_FUNCTION 1 /* has fun.call(obj, arg1, ... argN) */
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#define JS_HAS_OBJ_PROTO_PROP 1 /* has o.__proto__ etc. */
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#define JS_HAS_REGEXPS 1 /* has perl r.e.s via RegExp, /pat/ */
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#define JS_HAS_SEQUENCE_OPS 1 /* has array.slice, string.concat */
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#define JS_HAS_INITIALIZERS 1 /* has var o = {'foo': 42, 'bar':3} */
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#define JS_HAS_OBJ_WATCHPOINT 1 /* has o.watch and o.unwatch */
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#define JS_HAS_EXPORT_IMPORT 1 /* has export fun; import obj.fun */
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#define JS_HAS_EVAL_THIS_SCOPE 1 /* Math.eval is same as with (Math) */
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#define JS_HAS_TRIPLE_EQOPS 1 /* has === and !== identity eqops */
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#define JS_HAS_SHARP_VARS 1 /* has #n=, #n# for object literals */
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#define JS_HAS_REPLACE_LAMBDA 1 /* has string.replace(re, lambda) */
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#define JS_HAS_SCRIPT_OBJECT 1 /* has (new Script("x++")).exec() */
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#define JS_HAS_XDR 1 /* has XDR API and object methods */
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#define JS_HAS_EXCEPTIONS 0 /* has exception handling */
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#define JS_HAS_UNDEFINED 1 /* has global "undefined" property */
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#define JS_HAS_TOSOURCE 1 /* has Object/Array toSource method */
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#define JS_HAS_IN_OPERATOR 0 /* has in operator ('p' in {p:1}) */
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#define JS_HAS_INSTANCEOF 0 /* has {p:1} instanceof Object */
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#define JS_HAS_ARGS_OBJECT 1 /* has minimal ECMA arguments object */
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#define JS_HAS_DEBUGGER_KEYWORD 1 /* has hook for debugger keyword */
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#define JS_HAS_ERROR_EXCEPTIONS 0 /* has error object hierarchy */
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#define JS_HAS_CATCH_GUARD 0 /* has exception handling catch guard */
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#define JS_HAS_NEW_OBJ_METHODS 0 /* has Object.prototype query methods */
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#define JS_HAS_SPARSE_ARRAYS 0 /* array methods preserve empty elems */
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#define JS_HAS_DFLT_MSG_STRINGS 1 /* provides English error messages */
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#define JS_HAS_NUMBER_FORMATS 0 /* numbers have formatting methods */
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#define JS_HAS_GETTER_SETTER 0 /* has JS2 getter/setter functions */
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#define JS_HAS_UNEVAL 0 /* has uneval() top-level function */
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#define JS_HAS_CONST 0 /* has JS2 const as alternative var */
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#define JS_HAS_FUN_EXPR_STMT 0 /* has function expression statement */
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#elif JS_VERSION == 140
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#define JS_BUG_AUTO_INDEX_PROPS 0 /* new object o: o.p = v sets o[0] */
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#define JS_BUG_NULL_INDEX_PROPS 0 /* o[0] defaults to null, not void */
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#define JS_BUG_EMPTY_INDEX_ZERO 0 /* o[""] is equivalent to o[0] */
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#define JS_BUG_SHORT_CIRCUIT 0 /* 1 && 1 => true, 1 && 0 => 0 bug */
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#define JS_BUG_EAGER_TOSTRING 0 /* o.toString() trumps o.valueOf() */
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#define JS_BUG_VOID_TOSTRING 0 /* void 0 + 0 == "undefined0" */
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#define JS_BUG_EVAL_THIS_FUN 0 /* eval('this') in function f is f */
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#define JS_BUG_EVAL_THIS_SCOPE 0 /* Math.eval('sin(x)') vs. local x */
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#define JS_BUG_FALLIBLE_EQOPS 0 /* fallible/intransitive equality ops */
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#define JS_BUG_FALLIBLE_TONUM 0 /* fallible ValueToNumber primitive */
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#define JS_BUG_WITH_CLOSURE 1 /* with(o)function f(){} sets o.f */
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#define JS_BUG_SET_ENUMERATE 0 /* o.p=q flags o.p JSPROP_ENUMERATE */
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#define JS_HAS_PROP_DELETE 1 /* delete o.p removes p from o */
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#define JS_HAS_CALL_OBJECT 1 /* fun.caller is stack frame obj */
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#define JS_HAS_LABEL_STATEMENT 1 /* has break/continue to label: */
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#define JS_HAS_DO_WHILE_LOOP 1 /* has do {...} while (b) */
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#define JS_HAS_SWITCH_STATEMENT 1 /* has switch (v) {case c: ...} */
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#define JS_HAS_SOME_PERL_FUN 1 /* has array.join/reverse/sort */
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#define JS_HAS_MORE_PERL_FUN 1 /* has array.push, str.substr, etc */
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#define JS_HAS_VALUEOF_HINT 1 /* valueOf(hint) where hint is typeof */
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#define JS_HAS_LEXICAL_CLOSURE 1 /* nested functions, lexically closed */
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#define JS_HAS_APPLY_FUNCTION 1 /* has apply(fun, arg1, ... argN) */
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#define JS_HAS_CALL_FUNCTION 1 /* has fun.call(obj, arg1, ... argN) */
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#define JS_HAS_OBJ_PROTO_PROP 1 /* has o.__proto__ etc. */
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#define JS_HAS_REGEXPS 1 /* has perl r.e.s via RegExp, /pat/ */
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#define JS_HAS_SEQUENCE_OPS 1 /* has array.slice, string.concat */
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#define JS_HAS_INITIALIZERS 1 /* has var o = {'foo': 42, 'bar':3} */
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#define JS_HAS_OBJ_WATCHPOINT 1 /* has o.watch and o.unwatch */
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#define JS_HAS_EXPORT_IMPORT 1 /* has export fun; import obj.fun */
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#define JS_HAS_EVAL_THIS_SCOPE 1 /* Math.eval is same as with (Math) */
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#define JS_HAS_TRIPLE_EQOPS 1 /* has === and !== identity eqops */
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#define JS_HAS_SHARP_VARS 1 /* has #n=, #n# for object literals */
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#define JS_HAS_REPLACE_LAMBDA 1 /* has string.replace(re, lambda) */
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#define JS_HAS_SCRIPT_OBJECT 1 /* has (new Script("x++")).exec() */
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#define JS_HAS_XDR 1 /* has XDR API and object methods */
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#define JS_HAS_EXCEPTIONS 1 /* has exception handling */
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#define JS_HAS_UNDEFINED 1 /* has global "undefined" property */
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#define JS_HAS_TOSOURCE 1 /* has Object/Array toSource method */
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#define JS_HAS_IN_OPERATOR 1 /* has in operator ('p' in {p:1}) */
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#define JS_HAS_INSTANCEOF 1 /* has {p:1} instanceof Object */
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#define JS_HAS_ARGS_OBJECT 1 /* has minimal ECMA arguments object */
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#define JS_HAS_DEBUGGER_KEYWORD 1 /* has hook for debugger keyword */
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#define JS_HAS_ERROR_EXCEPTIONS 0 /* rt errors reflected as exceptions */
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#define JS_HAS_CATCH_GUARD 0 /* has exception handling catch guard */
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#define JS_HAS_NEW_OBJ_METHODS 0 /* has Object.prototype query methods */
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#define JS_HAS_SPARSE_ARRAYS 0 /* array methods preserve empty elems */
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#define JS_HAS_DFLT_MSG_STRINGS 1 /* provides English error messages */
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#define JS_HAS_NUMBER_FORMATS 0 /* numbers have formatting methods */
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#define JS_HAS_GETTER_SETTER 0 /* has JS2 getter/setter functions */
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#define JS_HAS_UNEVAL 0 /* has uneval() top-level function */
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#define JS_HAS_CONST 0 /* has JS2 const as alternative var */
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#define JS_HAS_FUN_EXPR_STMT 0 /* has function expression statement */
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#elif JS_VERSION == 150
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#define JS_BUG_AUTO_INDEX_PROPS 0 /* new object o: o.p = v sets o[0] */
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#define JS_BUG_NULL_INDEX_PROPS 0 /* o[0] defaults to null, not void */
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#define JS_BUG_EMPTY_INDEX_ZERO 0 /* o[""] is equivalent to o[0] */
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#define JS_BUG_SHORT_CIRCUIT 0 /* 1 && 1 => true, 1 && 0 => 0 bug */
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#define JS_BUG_EAGER_TOSTRING 0 /* o.toString() trumps o.valueOf() */
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#define JS_BUG_VOID_TOSTRING 0 /* void 0 + 0 == "undefined0" */
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#define JS_BUG_EVAL_THIS_FUN 0 /* eval('this') in function f is f */
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#define JS_BUG_EVAL_THIS_SCOPE 0 /* Math.eval('sin(x)') vs. local x */
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#define JS_BUG_FALLIBLE_EQOPS 0 /* fallible/intransitive equality ops */
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#define JS_BUG_FALLIBLE_TONUM 0 /* fallible ValueToNumber primitive */
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#define JS_BUG_WITH_CLOSURE 1 /* with(o)function f(){} sets o.f */
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#define JS_BUG_SET_ENUMERATE 0 /* o.p=q flags o.p JSPROP_ENUMERATE */
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#define JS_HAS_PROP_DELETE 1 /* delete o.p removes p from o */
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#define JS_HAS_CALL_OBJECT 1 /* fun.caller is stack frame obj */
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#define JS_HAS_LABEL_STATEMENT 1 /* has break/continue to label: */
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#define JS_HAS_DO_WHILE_LOOP 1 /* has do {...} while (b) */
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#define JS_HAS_SWITCH_STATEMENT 1 /* has switch (v) {case c: ...} */
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#define JS_HAS_SOME_PERL_FUN 1 /* has array.join/reverse/sort */
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#define JS_HAS_MORE_PERL_FUN 1 /* has array.push, str.substr, etc */
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#define JS_HAS_VALUEOF_HINT 1 /* valueOf(hint) where hint is typeof */
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#define JS_HAS_LEXICAL_CLOSURE 1 /* nested functions, lexically closed */
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#define JS_HAS_APPLY_FUNCTION 1 /* has apply(fun, arg1, ... argN) */
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#define JS_HAS_CALL_FUNCTION 1 /* has fun.call(obj, arg1, ... argN) */
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#define JS_HAS_OBJ_PROTO_PROP 1 /* has o.__proto__ etc. */
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#define JS_HAS_REGEXPS 1 /* has perl r.e.s via RegExp, /pat/ */
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#define JS_HAS_SEQUENCE_OPS 1 /* has array.slice, string.concat */
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#define JS_HAS_INITIALIZERS 1 /* has var o = {'foo': 42, 'bar':3} */
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#define JS_HAS_OBJ_WATCHPOINT 1 /* has o.watch and o.unwatch */
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#define JS_HAS_EXPORT_IMPORT 1 /* has export fun; import obj.fun */
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#define JS_HAS_EVAL_THIS_SCOPE 1 /* Math.eval is same as with (Math) */
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#define JS_HAS_TRIPLE_EQOPS 1 /* has === and !== identity eqops */
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#define JS_HAS_SHARP_VARS 1 /* has #n=, #n# for object literals */
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#define JS_HAS_REPLACE_LAMBDA 1 /* has string.replace(re, lambda) */
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#define JS_HAS_SCRIPT_OBJECT 1 /* has (new Script("x++")).exec() */
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#define JS_HAS_XDR 1 /* has XDR API and object methods */
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#define JS_HAS_EXCEPTIONS 1 /* has exception handling */
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#define JS_HAS_UNDEFINED 1 /* has global "undefined" property */
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#define JS_HAS_TOSOURCE 1 /* has Object/Array toSource method */
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#define JS_HAS_IN_OPERATOR 1 /* has in operator ('p' in {p:1}) */
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#define JS_HAS_INSTANCEOF 1 /* has {p:1} instanceof Object */
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#define JS_HAS_ARGS_OBJECT 1 /* has minimal ECMA arguments object */
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#define JS_HAS_DEBUGGER_KEYWORD 1 /* has hook for debugger keyword */
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|
#define JS_HAS_ERROR_EXCEPTIONS 1 /* rt errors reflected as exceptions */
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|
#define JS_HAS_CATCH_GUARD 1 /* has exception handling catch guard */
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|
#define JS_HAS_NEW_OBJ_METHODS 1 /* has Object.prototype query methods */
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|
#define JS_HAS_SPARSE_ARRAYS 0 /* array methods preserve empty elems */
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#define JS_HAS_DFLT_MSG_STRINGS 1 /* provides English error messages */
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|
#define JS_HAS_NUMBER_FORMATS 1 /* numbers have formatting methods */
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|
#define JS_HAS_GETTER_SETTER 1 /* has JS2 getter/setter functions */
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|
#define JS_HAS_UNEVAL 1 /* has uneval() top-level function */
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|
#define JS_HAS_CONST 1 /* has JS2 const as alternative var */
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|
#define JS_HAS_FUN_EXPR_STMT 1 /* has function expression statement */
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#else
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#error "unknown JS_VERSION"
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#endif
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