js/src/jsconfig.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
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  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.
  23  *
  24  * Contributor(s):
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either of the GNU General Public License Version 2 or later (the "GPL"),
  28  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  29  * in which case the provisions of the GPL or the LGPL are applicable instead
  30  * of those above. If you wish to allow use of your version of this file only
  31  * under the terms of either the GPL or the LGPL, and not to allow others to
  32  * use your version of this file under the terms of the MPL, indicate your
  33  * decision by deleting the provisions above and replace them with the notice
  34  * and other provisions required by the GPL or the LGPL. If you do not delete
  35  * the provisions above, a recipient may use your version of this file under
  36  * the terms of any one of the MPL, the GPL or the LGPL.
  37  *
  38  * ***** END LICENSE BLOCK ***** */
  39
  40 /*
  41  * JS configuration macros.
  42  */
  43 #ifndef JS_VERSION
  44 #define JS_VERSION 180
  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
  52  *         ^                       ^
  53  *         |                       |
  54  *         basis for ECMAv1        close to ECMAv2
  55  *
  56  * where ECMAv3 stands for ECMA-262 Edition 3.  See the runtime version enum
  57  * JSVersion in jspubtd.h.  Code in the engine can therefore count on version
  58  * <= JSVERSION_1_4 to mean "before the Third Edition of ECMA-262" and version
  59  * > JSVERSION_1_4 to mean "at or after the Third Edition".
  60  *
  61  * In the (likely?) event that SpiderMonkey grows to implement JavaScript 2.0,
  62  * or ECMA-262 Edition 4 (JS2 without certain extensions), the version number
  63  * 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_EXPORT_IMPORT    0       /* has export fun; import obj.fun */
  90 #define JS_HAS_EVAL_THIS_SCOPE  0       /* Math.eval is same as with (Math) */
  91 #define JS_HAS_SHARP_VARS       0       /* has #n=, #n# for object literals */
  92 #define JS_HAS_SCRIPT_OBJECT    0       /* has (new Script("x++")).exec() */
  93 #define JS_HAS_XDR              0       /* has XDR API and internal support */
  94 #define JS_HAS_XDR_FREEZE_THAW  0       /* has XDR freeze/thaw script methods */
  95 #define JS_HAS_TOSOURCE         0       /* has Object/Array toSource method */
  96 #define JS_HAS_DEBUGGER_KEYWORD 0       /* has hook for debugger keyword */
  97 #define JS_HAS_CATCH_GUARD      0       /* has exception handling catch guard */
  98 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
  99 #define JS_HAS_GETTER_SETTER    0       /* has JS2 getter/setter functions */
 100 #define JS_HAS_UNEVAL           0       /* has uneval() top-level function */
 101 #define JS_HAS_CONST            0       /* has JS2 const as alternative var */
 102 #define JS_HAS_FUN_EXPR_STMT    0       /* has function expression statement */
 103 #define JS_HAS_LVALUE_RETURN    1       /* has o.item(i) = j; for native item */
 104 #define JS_HAS_NO_SUCH_METHOD   0       /* has o.__noSuchMethod__ handler */
 105 #define JS_HAS_XML_SUPPORT      0       /* has ECMAScript for XML support */
 106 #define JS_HAS_ARRAY_EXTRAS     0       /* has indexOf and Lispy extras */
 107 #define JS_HAS_GENERATORS       0       /* has yield in generator function */
 108 #define JS_HAS_BLOCK_SCOPE      0       /* has block scope via let/arraycomp */
 109 #define JS_HAS_DESTRUCTURING    0       /* has [a,b] = ... or {p:a,q:b} = ... */
 110 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 111 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 112
 113 #elif JS_VERSION < 150
 114
 115 #error "unsupported JS_VERSION"
 116
 117 #elif JS_VERSION == 150
 118
 119 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 120 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 121 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 122 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 123 #define JS_HAS_EXPORT_IMPORT    1       /* has export fun; import obj.fun */
 124 #define JS_HAS_EVAL_THIS_SCOPE  1       /* Math.eval is same as with (Math) */
 125 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 126 #define JS_HAS_SCRIPT_OBJECT    1       /* has (new Script("x++")).exec() */
 127 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 128 #define JS_HAS_XDR_FREEZE_THAW  0       /* has XDR freeze/thaw script methods */
 129 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 130 #define JS_HAS_DEBUGGER_KEYWORD 1       /* has hook for debugger keyword */
 131 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 132 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 133 #define JS_HAS_GETTER_SETTER    1       /* has JS2 getter/setter functions */
 134 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 135 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 136 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 137 #define JS_HAS_LVALUE_RETURN    1       /* has o.item(i) = j; for native item */
 138 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 139 #define JS_HAS_XML_SUPPORT      0       /* has ECMAScript for XML support */
 140 #define JS_HAS_ARRAY_EXTRAS     0       /* has indexOf and Lispy extras */
 141 #define JS_HAS_GENERATORS       0       /* has yield in generator function */
 142 #define JS_HAS_BLOCK_SCOPE      0       /* has block scope via let/arraycomp */
 143 #define JS_HAS_DESTRUCTURING    0       /* has [a,b] = ... or {p:a,q:b} = ... */
 144 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 145 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 146
 147 #elif JS_VERSION == 160
 148
 149 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 150 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 151 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 152 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 153 #define JS_HAS_EXPORT_IMPORT    1       /* has export fun; import obj.fun */
 154 #define JS_HAS_EVAL_THIS_SCOPE  1       /* Math.eval is same as with (Math) */
 155 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 156 #define JS_HAS_SCRIPT_OBJECT    1       /* has (new Script("x++")).exec() */
 157 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 158 #define JS_HAS_XDR_FREEZE_THAW  0       /* has XDR freeze/thaw script methods */
 159 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 160 #define JS_HAS_DEBUGGER_KEYWORD 1       /* has hook for debugger keyword */
 161 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 162 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 163 #define JS_HAS_GETTER_SETTER    1       /* has JS2 getter/setter functions */
 164 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 165 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 166 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 167 #define JS_HAS_LVALUE_RETURN    1       /* has o.item(i) = j; for native item */
 168 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 169 #define JS_HAS_XML_SUPPORT      1       /* has ECMAScript for XML support */
 170 #define JS_HAS_ARRAY_EXTRAS     1       /* has indexOf and Lispy extras */
 171 #define JS_HAS_GENERATORS       0       /* has yield in generator function */
 172 #define JS_HAS_BLOCK_SCOPE      0       /* has block scope via let/arraycomp */
 173 #define JS_HAS_DESTRUCTURING    0       /* has [a,b] = ... or {p:a,q:b} = ... */
 174 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 175 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 176
 177 #elif JS_VERSION == 170
 178
 179 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 180 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 181 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 182 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 183 #define JS_HAS_EXPORT_IMPORT    1       /* has export fun; import obj.fun */
 184 #define JS_HAS_EVAL_THIS_SCOPE  1       /* Math.eval is same as with (Math) */
 185 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 186 #define JS_HAS_SCRIPT_OBJECT    0       /* has (new Script("x++")).exec() */
 187 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 188 #define JS_HAS_XDR_FREEZE_THAW  0       /* has XDR freeze/thaw script methods */
 189 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 190 #define JS_HAS_DEBUGGER_KEYWORD 1       /* has hook for debugger keyword */
 191 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 192 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 193 #define JS_HAS_GETTER_SETTER    1       /* has JS2 getter/setter functions */
 194 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 195 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 196 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 197 #define JS_HAS_LVALUE_RETURN    1       /* has o.item(i) = j; for native item */
 198 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 199 #define JS_HAS_XML_SUPPORT      1       /* has ECMAScript for XML support */
 200 #define JS_HAS_ARRAY_EXTRAS     1       /* has indexOf and Lispy extras */
 201 #define JS_HAS_GENERATORS       1       /* has yield in generator function */
 202 #define JS_HAS_BLOCK_SCOPE      1       /* has block scope via let/arraycomp */
 203 #define JS_HAS_DESTRUCTURING    1       /* has [a,b] = ... or {p:a,q:b} = ... */
 204 #define JS_HAS_GENERATOR_EXPRS  0       /* has (expr for (lhs in iterable)) */
 205 #define JS_HAS_EXPR_CLOSURES    0       /* has function (formals) listexpr */
 206
 207 #elif JS_VERSION == 180
 208
 209 #define JS_HAS_STR_HTML_HELPERS 1       /* has str.anchor, str.bold, etc. */
 210 #define JS_HAS_PERL_SUBSTR      1       /* has str.substr */
 211 #define JS_HAS_OBJ_PROTO_PROP   1       /* has o.__proto__ etc. */
 212 #define JS_HAS_OBJ_WATCHPOINT   1       /* has o.watch and o.unwatch */
 213 #define JS_HAS_EXPORT_IMPORT    1       /* has export fun; import obj.fun */
 214 #define JS_HAS_EVAL_THIS_SCOPE  1       /* Math.eval is same as with (Math) */
 215 #define JS_HAS_SHARP_VARS       1       /* has #n=, #n# for object literals */
 216 #define JS_HAS_SCRIPT_OBJECT    0       /* has (new Script("x++")).exec() */
 217 #define JS_HAS_XDR              1       /* has XDR API and internal support */
 218 #define JS_HAS_XDR_FREEZE_THAW  0       /* has XDR freeze/thaw script methods */
 219 #define JS_HAS_TOSOURCE         1       /* has Object/Array toSource method */
 220 #define JS_HAS_DEBUGGER_KEYWORD 1       /* has hook for debugger keyword */
 221 #define JS_HAS_CATCH_GUARD      1       /* has exception handling catch guard */
 222 #define JS_HAS_SPARSE_ARRAYS    0       /* array methods preserve empty elems */
 223 #define JS_HAS_GETTER_SETTER    1       /* has JS2 getter/setter functions */
 224 #define JS_HAS_UNEVAL           1       /* has uneval() top-level function */
 225 #define JS_HAS_CONST            1       /* has JS2 const as alternative var */
 226 #define JS_HAS_FUN_EXPR_STMT    1       /* has function expression statement */
 227 #define JS_HAS_LVALUE_RETURN    1       /* has o.item(i) = j; for native item */
 228 #define JS_HAS_NO_SUCH_METHOD   1       /* has o.__noSuchMethod__ handler */
 229 #define JS_HAS_XML_SUPPORT      1       /* has ECMAScript for XML support */
 230 #define JS_HAS_ARRAY_EXTRAS     1       /* has indexOf and Lispy extras */
 231 #define JS_HAS_GENERATORS       1       /* has yield in generator function */
 232 #define JS_HAS_BLOCK_SCOPE      1       /* has block scope via let/arraycomp */
 233 #define JS_HAS_DESTRUCTURING    1       /* has [a,b] = ... or {p:a,q:b} = ... */
 234 #define JS_HAS_GENERATOR_EXPRS  1       /* has (expr for (lhs in iterable)) */
 235 #define JS_HAS_EXPR_CLOSURES    1       /* has function (formals) listexpr */
 236
 237 #else
 238
 239 #error "unknown JS_VERSION"
 240
 241 #endif
 242
 243 /* Features that are present in all versions. */
 244 #define JS_HAS_RESERVED_JAVA_KEYWORDS   1
 245 #define JS_HAS_RESERVED_ECMA_KEYWORDS   1
 246