js/src/jsversion.h

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  *
   3  * ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
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   9  * http://www.mozilla.org/MPL/
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  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is Mozilla Communicator client code, released
  17  * March 31, 1998.
  18  *
  19  * The Initial Developer of the Original Code is
  20  * Netscape Communications Corporation.
  21  * Portions created by the Initial Developer are Copyright (C) 1998
  22  * the Initial Developer. All Rights Reserved.
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  38  * ***** END LICENSE BLOCK ***** */
  39
  40 /*
  41  * JS configuration macros.
  42  */
  43 #ifndef JS_VERSION
  44 #define JS_VERSION 185
  45 #endif
  46
  47 /*
  48  * Compile-time JS version configuration.  The JS version numbers lie on the
  49  * number line like so:
  50  *
  51  * 1.0     1.1     1.2     1.3     1.4     ECMAv3  1.5     1.6     1.7     1.8     ECMAv5
  52  *         ^                       ^
  53  *         |                       |
  54  *         basis for ECMAv1        close to ECMAv2
  55  *
  56  * where ECMAv3 stands for ECMA-262 Edition 3, and ECMAv5 stands for Edition 5.
  57  * See the runtime version enum JSVersion in jspubtd.h. Code in the engine can
  58  * therefore count on version <= JSVERSION_1_4 to mean "before the Third
  59  * Edition of ECMA-262" and version > JSVERSION_1_4 to mean "at or after the
  60  * Third Edition".
  61  *
  62  * In the (likely?) event that SpiderMonkey grows to implement JavaScript 2.0,
  63  * the version number to use would be near 200, or greater.
  64  *
  65  * The JS_VERSION_ECMA_3 version is the minimal configuration conforming to
  66  * the ECMA-262 Edition 3 specification.  Use it for minimal embeddings, where
  67  * you're sure you don't need any of the extensions disabled in this version.
  68  * In order to facilitate testing, JS_HAS_OBJ_PROTO_PROP is defined as part of
  69  * the JS_VERSION_ECMA_3_TEST version.
  70  *
  71  * To keep things sane in the modern age, where we need exceptions in order to
  72  * implement, e.g., iterators and generators, we are dropping support for all
  73  * versions <= 1.4.
  74  */
  75 #define JS_VERSION_ECMA_3       148
  76 #define JS_VERSION_ECMA_3_TEST  149
  77
  78 #if JS_VERSION == JS_VERSION_ECMA_3 ||                                        \
  79     JS_VERSION == JS_VERSION_ECMA_3_TEST
  80
  81 #define JS_HAS_STR_HTML_HELPERS 0       /* has str.anchor, str.bold, etc. */
  82 #define JS_HAS_PERL_SUBSTR      0       /* has str.substr */
  83 #if JS_VERSION == JS_VERSION_ECMA_3_TEST
  84 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
  85 #else
  86 #define JS_HAS_OBJ_PROTO_PROP   0       /* has o.__proto__ etc. */
  87 #endif
  88 #define JS_HAS_OBJ_WATCHPOINT   0       /* has o.watch and o.unwatch */
  89 #define JS_HAS_SHARP_VARS       0       /* has #n=, #n# for object literals */
  90 #define JS_HAS_XDR              0       /* has XDR API and internal support */
  91 #define JS_HAS_TOSOURCE         0       /* has Object/Array toSource method */
  92 #define JS_HAS_CATCH_GUARD      0       /* has exception handling catch guard */
  93 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
  94 #define JS_HAS_UNEVAL           0       /* has uneval() top-level function */
  95 #define JS_HAS_CONST            0       /* has JS2 const as alternative var */
  96 #define JS_HAS_FUN_EXPR_STMT    0       /* has function expression statement */
  97 #define JS_HAS_NO_SUCH_METHOD   0       /* has o.__noSuchMethod__ handler */
  98 #define JS_HAS_XML_SUPPORT      0       /* has ECMAScript for XML support */
  99 #define JS_HAS_ARRAY_EXTRAS     0       /* has indexOf and Lispy extras */
 100 #define JS_HAS_GENERATORS       0       /* has yield in generator function */
 101 #define JS_HAS_BLOCK_SCOPE      0       /* has block scope via let/arraycomp */
 102 #define JS_HAS_DESTRUCTURING    0       /* has [a,b] = ... or {p:a,q:b} = ... */
 103 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 104 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 105
 106 #elif JS_VERSION < 150
 107
 108 #error "unsupported JS_VERSION"
 109
 110 #elif JS_VERSION == 150
 111
 112 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 113 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 114 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 115 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 116 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 117 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 118 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 119 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 120 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 121 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 122 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 123 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 124 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 125 #define JS_HAS_XML_SUPPORT      0       /* has ECMAScript for XML support */
 126 #define JS_HAS_ARRAY_EXTRAS     0       /* has indexOf and Lispy extras */
 127 #define JS_HAS_GENERATORS       0       /* has yield in generator function */
 128 #define JS_HAS_BLOCK_SCOPE      0       /* has block scope via let/arraycomp */
 129 #define JS_HAS_DESTRUCTURING    0       /* has [a,b] = ... or {p:a,q:b} = ... */
 130 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 131 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 132
 133 #elif JS_VERSION == 160
 134
 135 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 136 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 137 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 138 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 139 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 140 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 141 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 142 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 143 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 144 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 145 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 146 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 147 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 148 #define JS_HAS_XML_SUPPORT      1       /* has ECMAScript for XML support */
 149 #define JS_HAS_ARRAY_EXTRAS     1       /* has indexOf and Lispy extras */
 150 #define JS_HAS_GENERATORS       0       /* has yield in generator function */
 151 #define JS_HAS_BLOCK_SCOPE      0       /* has block scope via let/arraycomp */
 152 #define JS_HAS_DESTRUCTURING    0       /* has [a,b] = ... or {p:a,q:b} = ... */
 153 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 154 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 155
 156 #elif JS_VERSION == 170
 157
 158 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 159 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 160 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 161 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 162 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 163 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 164 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 165 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 166 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 167 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 168 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 169 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 170 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 171 #define JS_HAS_XML_SUPPORT      1       /* has ECMAScript for XML support */
 172 #define JS_HAS_ARRAY_EXTRAS     1       /* has indexOf and Lispy extras */
 173 #define JS_HAS_GENERATORS       1       /* has yield in generator function */
 174 #define JS_HAS_BLOCK_SCOPE      1       /* has block scope via let/arraycomp */
 175 #define JS_HAS_DESTRUCTURING    1       /* has [a,b] = ... or {p:a,q:b} = ... */
 176 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 177 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 178
 179 #elif 180 <= JS_VERSION && JS_VERSION <= 185
 180
 181 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 182 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 183 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 184 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 185 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 186 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 187 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 188 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 189 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 190 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 191 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 192 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 193 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 194 #define JS_HAS_XML_SUPPORT      1       /* has ECMAScript for XML support */
 195 #define JS_HAS_ARRAY_EXTRAS     1       /* has indexOf and Lispy extras */
 196 #define JS_HAS_GENERATORS       1       /* has yield in generator function */
 197 #define JS_HAS_BLOCK_SCOPE      1       /* has block scope via let/arraycomp */
 198 #define JS_HAS_DESTRUCTURING    2       /* has [a,b] = ... or {p:a,q:b} = ... */
 199 #define JS_HAS_GENERATOR_EXPRS  1       /* has (expr for (lhs in iterable)) */
 200 #define JS_HAS_EXPR_CLOSURES    1       /* has function (formals) listexpr */
 201
 202 #else
 203
 204 #error "unknown JS_VERSION"
 205
 206 #endif
 207
 208 /* Support for JS_NewGlobalObject. */
 209 #define JS_HAS_NEW_GLOBAL_OBJECT        1
 210
 211 /* Support for JS_MakeSystemObject. */
 212 #define JS_HAS_MAKE_SYSTEM_OBJECT       1
 213
 214 /* Feature-test macro for evolving destructuring support. */
 215 #define JS_HAS_DESTRUCTURING_SHORTHAND  (JS_HAS_DESTRUCTURING == 2)
 216
 217 /*
 218  * Feature for Object.prototype.__{define,lookup}{G,S}etter__ legacy support;
 219  * support likely to be made opt-in at some future time.
 220  */
 221 #define OLD_GETTER_SETTER_METHODS       1