core/syntax/syntax.factor

   1 ! Copyright (C) 2004, 2010 Slava Pestov.
   2 ! See http://factorcode.org/license.txt for BSD license.
   3 USING: accessors arrays byte-arrays byte-vectors
   4 classes.algebra.private classes.builtin classes.error
   5 classes.intersection classes.maybe classes.mixin classes.parser
   6 classes.predicate classes.singleton classes.tuple classes.tuple.parser
   7 classes.union combinators compiler.units definitions effects
   8 effects.parser generic generic.hook generic.math generic.parser
   9 generic.standard hash-sets hashtables io.pathnames kernel lexer
  10 math namespaces parser quotations sbufs sequences slots
  11 source-files splitting strings strings.parser
  12 strings.parser.private vectors vocabs vocabs.parser words
  13 words.alias words.constant words.symbol ;
  14 IN: bootstrap.syntax
  15
  16 ! These words are defined as a top-level form, instead of with
  17 ! defining parsing words, because during stage1 bootstrap, the
  18 ! "syntax" vocabulary is copied from the host. When stage1
  19 ! bootstrap completes, the host's syntax vocabulary is deleted
  20 ! from the target, then this top-level form creates the
  21 ! target's "syntax" vocabulary as one of the first things done
  22 ! in stage2.
  23
  24 : define-delimiter ( name -- )
  25     "syntax" lookup-word t "delimiter" set-word-prop ;
  26
  27 ! Keep track of words defined by SYNTAX: as opposed to words
  28 ! merely generated by define-syntax.
  29 : mark-top-level-syntax ( word -- word )
  30     dup t "syntax" set-word-prop ;
  31
  32 : define-core-syntax ( name quot -- )
  33     [
  34         dup "syntax" lookup-word [ ] [ no-word-error ] ?if
  35         mark-top-level-syntax
  36     ] dip
  37     define-syntax ;
  38
  39 [
  40     { "]" "}" ";" ">>" } [ define-delimiter ] each
  41
  42     "PRIMITIVE:" [
  43         current-vocab name>>
  44         scan-word scan-effect ensure-primitive
  45     ] define-core-syntax
  46
  47     "CS{" [
  48         "Call stack literals are not supported" throw
  49     ] define-core-syntax
  50
  51     "IN:" [ scan-token set-current-vocab ] define-core-syntax
  52
  53     "<PRIVATE" [ begin-private ] define-core-syntax
  54
  55     "PRIVATE>" [ end-private ] define-core-syntax
  56
  57     "USE:" [ scan-token use-vocab ] define-core-syntax
  58
  59     "UNUSE:" [ scan-token unuse-vocab ] define-core-syntax
  60
  61     "USING:" [ ";" [ use-vocab ] each-token ] define-core-syntax
  62
  63     "QUALIFIED:" [ scan-token dup add-qualified ] define-core-syntax
  64
  65     "QUALIFIED-WITH:" [ scan-token scan-token add-qualified ] define-core-syntax
  66
  67     "FROM:" [
  68         scan-token "=>" expect ";" parse-tokens add-words-from
  69     ] define-core-syntax
  70
  71     "EXCLUDE:" [
  72         scan-token "=>" expect ";" parse-tokens add-words-excluding
  73     ] define-core-syntax
  74
  75     "RENAME:" [
  76         scan-token scan-token "=>" expect scan-token add-renamed-word
  77     ] define-core-syntax
  78
  79     "NAN:" [ 16 scan-base <fp-nan> suffix! ] define-core-syntax
  80
  81     "f" [ f suffix! ] define-core-syntax
  82
  83     "CHAR:" [
  84         lexer get parse-raw [ "token" throw-unexpected-eof ] unless* {
  85             { [ dup length 1 = ] [ first ] }
  86             { [ "\\" ?head ] [ next-escape >string "" assert= ] }
  87             [ name>char-hook get call( name -- char ) ]
  88         } cond suffix!
  89     ] define-core-syntax
  90
  91     "\"" [ parse-string suffix! ] define-core-syntax
  92
  93     "SBUF\"" [
  94         lexer get skip-blank parse-string >sbuf suffix!
  95     ] define-core-syntax
  96
  97     "P\"" [
  98         lexer get skip-blank parse-string <pathname> suffix!
  99     ] define-core-syntax
 100
 101     "[" [ parse-quotation suffix! ] define-core-syntax
 102     "{" [ \ } [ >array ] parse-literal ] define-core-syntax
 103     "V{" [ \ } [ >vector ] parse-literal ] define-core-syntax
 104     "B{" [ \ } [ >byte-array ] parse-literal ] define-core-syntax
 105     "BV{" [ \ } [ >byte-vector ] parse-literal ] define-core-syntax
 106     "H{" [ \ } [ parse-hashtable ] parse-literal ] define-core-syntax
 107     "T{" [ parse-tuple-literal suffix! ] define-core-syntax
 108     "TH{" [ parse-tuple-hash-literal suffix! ] define-core-syntax
 109     "W{" [ \ } [ first <wrapper> ] parse-literal ] define-core-syntax
 110     "HS{" [ \ } [ >hash-set ] parse-literal ] define-core-syntax
 111
 112     "POSTPONE:" [ scan-word suffix! ] define-core-syntax
 113     "\\" [ scan-word <wrapper> suffix! ] define-core-syntax
 114     "M\\" [ scan-word scan-word lookup-method <wrapper> suffix! ] define-core-syntax
 115     "inline" [ last-word make-inline ] define-core-syntax
 116     "recursive" [ last-word make-recursive ] define-core-syntax
 117     "foldable" [ last-word make-foldable ] define-core-syntax
 118     "flushable" [ last-word make-flushable ] define-core-syntax
 119     "delimiter" [ last-word t "delimiter" set-word-prop ] define-core-syntax
 120     "deprecated" [ last-word make-deprecated ] define-core-syntax
 121
 122     "SYNTAX:" [
 123         scan-new-word
 124         mark-top-level-syntax
 125         parse-definition define-syntax
 126     ] define-core-syntax
 127
 128     "BUILTIN:" [
 129         scan-word-name
 130         current-vocab lookup-word
 131         (parse-tuple-definition) 2drop check-builtin
 132     ] define-core-syntax
 133
 134     "SYMBOL:" [
 135         scan-new-word define-symbol
 136     ] define-core-syntax
 137
 138     "SYMBOLS:" [
 139         ";" [ create-word-in [ reset-generic ] [ define-symbol ] bi ] each-token
 140     ] define-core-syntax
 141
 142     "SINGLETONS:" [
 143         ";" [ create-class-in define-singleton-class ] each-token
 144     ] define-core-syntax
 145
 146     "DEFER:" [
 147         scan-token current-vocab create-word
 148         [ fake-definition ] [ set-last-word ] [ undefined-def define ] tri
 149     ] define-core-syntax
 150
 151     "ALIAS:" [
 152         scan-new-word scan-word define-alias
 153     ] define-core-syntax
 154
 155     "CONSTANT:" [
 156         scan-new-word scan-object define-constant
 157     ] define-core-syntax
 158
 159     ":" [
 160         (:) define-declared
 161     ] define-core-syntax
 162
 163     "GENERIC:" [
 164         [ simple-combination ] (GENERIC:)
 165     ] define-core-syntax
 166
 167     "GENERIC#:" [
 168         [ scan-number <standard-combination> ] (GENERIC:)
 169     ] define-core-syntax
 170
 171     "MATH:" [
 172         [ math-combination ] (GENERIC:)
 173     ] define-core-syntax
 174
 175     "HOOK:" [
 176         [ scan-word <hook-combination> ] (GENERIC:)
 177     ] define-core-syntax
 178
 179     "M:" [
 180         (M:) define
 181     ] define-core-syntax
 182
 183     "UNION:" [
 184         scan-new-class parse-array-def define-union-class
 185     ] define-core-syntax
 186
 187     "INTERSECTION:" [
 188         scan-new-class parse-array-def define-intersection-class
 189     ] define-core-syntax
 190
 191     "MIXIN:" [
 192         scan-new-class define-mixin-class
 193     ] define-core-syntax
 194
 195     "INSTANCE:" [
 196         location [
 197             scan-word scan-word 2dup add-mixin-instance
 198             <mixin-instance>
 199         ] dip remember-definition
 200     ] define-core-syntax
 201
 202     "PREDICATE:" [
 203         scan-new-class
 204         "<" expect
 205         scan-class
 206         parse-definition define-predicate-class
 207     ] define-core-syntax
 208
 209     "SINGLETON:" [
 210         scan-new-class define-singleton-class
 211     ] define-core-syntax
 212
 213     "TUPLE:" [
 214         parse-tuple-definition define-tuple-class
 215     ] define-core-syntax
 216
 217     "final" [
 218         last-word make-final
 219     ] define-core-syntax
 220
 221     "SLOT:" [
 222         scan-token define-protocol-slot
 223     ] define-core-syntax
 224
 225     "C:" [
 226         scan-new-word scan-word define-boa-word
 227     ] define-core-syntax
 228
 229     "ERROR:" [
 230         parse-tuple-definition
 231         pick save-location
 232         define-error-class
 233     ] define-core-syntax
 234
 235     "FORGET:" [
 236         scan-object forget
 237     ] define-core-syntax
 238
 239     "(" [
 240         ")" parse-effect suffix!
 241     ] define-core-syntax
 242
 243     "MAIN:" [
 244         scan-word
 245         dup ( -- ) check-stack-effect
 246         [ current-vocab main<< ]
 247         [ current-source-file get [ main<< ] [ drop ] if* ] bi
 248     ] define-core-syntax
 249
 250     "<<" [
 251         [
 252             \ >> parse-until >quotation
 253         ] with-nested-compilation-unit call( -- )
 254     ] define-core-syntax
 255
 256     "call-next-method" [
 257         current-method get [
 258             literalize suffix!
 259             \ (call-next-method) suffix!
 260         ] [
 261             not-in-a-method-error
 262         ] if*
 263     ] define-core-syntax
 264
 265     "maybe{" [
 266         \ } [ <anonymous-union> <maybe> ] parse-literal
 267     ] define-core-syntax
 268
 269     "not{" [
 270         \ } [ <anonymous-union> <anonymous-complement> ] parse-literal
 271     ] define-core-syntax
 272
 273     "intersection{" [
 274          \ } [ <anonymous-intersection> ] parse-literal
 275     ] define-core-syntax
 276
 277     "union{" [
 278         \ } [ <anonymous-union> ] parse-literal
 279     ] define-core-syntax
 280
 281     "initial:" "syntax" lookup-word define-symbol
 282
 283     "read-only" "syntax" lookup-word define-symbol
 284
 285     "call(" [ \ call-effect parse-call-paren ] define-core-syntax
 286
 287     "execute(" [ \ execute-effect parse-call-paren ] define-core-syntax
 288
 289     "<<<<<<<" [ version-control-merge-conflict ] define-core-syntax
 290     "=======" [ version-control-merge-conflict ] define-core-syntax
 291     ">>>>>>>" [ version-control-merge-conflict ] define-core-syntax
 292
 293     "<<<<<<" [ version-control-merge-conflict ] define-core-syntax
 294     "======" [ version-control-merge-conflict ] define-core-syntax
 295     ">>>>>>" [ version-control-merge-conflict ] define-core-syntax
 296 ] with-compilation-unit