core/syntax/syntax.factor

   1 ! Copyright (C) 2004, 2009 Slava Pestov.
   2 ! See http://factorcode.org/license.txt for BSD license.
   3 USING: accessors alien arrays byte-arrays byte-vectors definitions generic
   4 hashtables kernel math namespaces parser lexer sequences strings
   5 strings.parser sbufs vectors words words.symbol words.constant
   6 words.alias quotations io assocs splitting classes.tuple
   7 generic.standard generic.hook generic.math generic.parser classes
   8 io.pathnames vocabs vocabs.parser classes.parser classes.union
   9 classes.intersection classes.mixin classes.predicate
  10 classes.singleton classes.tuple.parser compiler.units
  11 combinators effects.parser slots hash-sets ;
  12 IN: bootstrap.syntax
  13
  14 ! These words are defined as a top-level form, instead of with
  15 ! defining parsing words, because during stage1 bootstrap, the
  16 ! "syntax" vocabulary is copied from the host. When stage1
  17 ! bootstrap completes, the host's syntax vocabulary is deleted
  18 ! from the target, then this top-level form creates the
  19 ! target's "syntax" vocabulary as one of the first things done
  20 ! in stage2.
  21
  22 : define-delimiter ( name -- )
  23     "syntax" lookup t "delimiter" set-word-prop ;
  24
  25 : define-core-syntax ( name quot -- )
  26     [ dup "syntax" lookup [ ] [ no-word-error ] ?if ] dip
  27     define-syntax ;
  28
  29 [
  30     { "]" "}" ";" ">>" } [ define-delimiter ] each
  31
  32     "PRIMITIVE:" [
  33         "Primitive definition is not supported" throw
  34     ] define-core-syntax
  35
  36     "CS{" [
  37         "Call stack literals are not supported" throw
  38     ] define-core-syntax
  39
  40     "!" [ lexer get next-line ] define-core-syntax
  41
  42     "#!" [ POSTPONE: ! ] define-core-syntax
  43
  44     "IN:" [ scan set-current-vocab ] define-core-syntax
  45
  46     "<PRIVATE" [ begin-private ] define-core-syntax
  47
  48     "PRIVATE>" [ end-private ] define-core-syntax
  49
  50     "USE:" [ scan use-vocab ] define-core-syntax
  51
  52     "UNUSE:" [ scan unuse-vocab ] define-core-syntax
  53
  54     "USING:" [ ";" [ use-vocab ] each-token ] define-core-syntax
  55
  56     "QUALIFIED:" [ scan dup add-qualified ] define-core-syntax
  57
  58     "QUALIFIED-WITH:" [ scan scan add-qualified ] define-core-syntax
  59
  60     "FROM:" [
  61         scan "=>" expect ";" parse-tokens add-words-from
  62     ] define-core-syntax
  63
  64     "EXCLUDE:" [
  65         scan "=>" expect ";" parse-tokens add-words-excluding
  66     ] define-core-syntax
  67
  68     "RENAME:" [
  69         scan scan "=>" expect scan add-renamed-word
  70     ] define-core-syntax
  71
  72     "HEX:" [ 16 parse-base ] define-core-syntax
  73     "OCT:" [ 8 parse-base ] define-core-syntax
  74     "BIN:" [ 2 parse-base ] define-core-syntax
  75
  76     "NAN:" [ 16 scan-base <fp-nan> suffix! ] define-core-syntax
  77
  78     "f" [ f suffix! ] define-core-syntax
  79     "t" "syntax" lookup define-singleton-class
  80
  81     "CHAR:" [
  82         scan {
  83             { [ dup length 1 = ] [ first ] }
  84             { [ "\\" ?head ] [ next-escape >string "" assert= ] }
  85             [ name>char-hook get call( name -- char ) ]
  86         } cond suffix!
  87     ] define-core-syntax
  88
  89     "\"" [ parse-multiline-string suffix! ] define-core-syntax
  90
  91     "SBUF\"" [
  92         lexer get skip-blank parse-string >sbuf suffix!
  93     ] define-core-syntax
  94
  95     "P\"" [
  96         lexer get skip-blank parse-string <pathname> suffix!
  97     ] define-core-syntax
  98
  99     "[" [ parse-quotation suffix! ] define-core-syntax
 100     "{" [ \ } [ >array ] parse-literal ] define-core-syntax
 101     "V{" [ \ } [ >vector ] parse-literal ] define-core-syntax
 102     "B{" [ \ } [ >byte-array ] parse-literal ] define-core-syntax
 103     "BV{" [ \ } [ >byte-vector ] parse-literal ] define-core-syntax
 104     "H{" [ \ } [ >hashtable ] parse-literal ] define-core-syntax
 105     "T{" [ parse-tuple-literal suffix! ] define-core-syntax
 106     "W{" [ \ } [ first <wrapper> ] parse-literal ] define-core-syntax
 107     "HS{" [ \ } [ <hash-set> ] parse-literal ] define-core-syntax
 108
 109     "POSTPONE:" [ scan-word suffix! ] define-core-syntax
 110     "\\" [ scan-word <wrapper> suffix! ] define-core-syntax
 111     "M\\" [ scan-word scan-word method <wrapper> suffix! ] define-core-syntax
 112     "inline" [ word make-inline ] define-core-syntax
 113     "recursive" [ word make-recursive ] define-core-syntax
 114     "foldable" [ word make-foldable ] define-core-syntax
 115     "flushable" [ word make-flushable ] define-core-syntax
 116     "delimiter" [ word t "delimiter" set-word-prop ] define-core-syntax
 117     "deprecated" [ word make-deprecated ] define-core-syntax
 118
 119     "SYNTAX:" [
 120         CREATE-WORD parse-definition define-syntax
 121     ] define-core-syntax
 122
 123     "SYMBOL:" [
 124         CREATE-WORD define-symbol
 125     ] define-core-syntax
 126
 127     "SYMBOLS:" [
 128         ";" [ create-in dup reset-generic define-symbol ] each-token
 129     ] define-core-syntax
 130
 131     "SINGLETONS:" [
 132         ";" [ create-class-in define-singleton-class ] each-token
 133     ] define-core-syntax
 134
 135     "DEFER:" [
 136         scan current-vocab create
 137         [ fake-definition ] [ set-word ] [ undefined-def define ] tri
 138     ] define-core-syntax
 139
 140     "ALIAS:" [
 141         CREATE-WORD scan-word define-alias
 142     ] define-core-syntax
 143
 144     "CONSTANT:" [
 145         CREATE-WORD scan-object define-constant
 146     ] define-core-syntax
 147
 148     ":" [
 149         (:) define-declared
 150     ] define-core-syntax
 151
 152     "GENERIC:" [
 153         [ simple-combination ] (GENERIC:)
 154     ] define-core-syntax
 155
 156     "GENERIC#" [
 157         [ scan-word <standard-combination> ] (GENERIC:)
 158     ] define-core-syntax
 159
 160     "MATH:" [
 161         [ math-combination ] (GENERIC:)
 162     ] define-core-syntax
 163
 164     "HOOK:" [
 165         [ scan-word <hook-combination> ] (GENERIC:)
 166     ] define-core-syntax
 167
 168     "M:" [
 169         (M:) define
 170     ] define-core-syntax
 171
 172     "UNION:" [
 173         CREATE-CLASS parse-definition define-union-class
 174     ] define-core-syntax
 175
 176     "INTERSECTION:" [
 177         CREATE-CLASS parse-definition define-intersection-class
 178     ] define-core-syntax
 179
 180     "MIXIN:" [
 181         CREATE-CLASS define-mixin-class
 182     ] define-core-syntax
 183
 184     "INSTANCE:" [
 185         location [
 186             scan-word scan-word 2dup add-mixin-instance
 187             <mixin-instance>
 188         ] dip remember-definition
 189     ] define-core-syntax
 190
 191     "PREDICATE:" [
 192         CREATE-CLASS
 193         scan "<" assert=
 194         scan-word
 195         parse-definition define-predicate-class
 196     ] define-core-syntax
 197
 198     "SINGLETON:" [
 199         CREATE-CLASS define-singleton-class
 200     ] define-core-syntax
 201
 202     "TUPLE:" [
 203         parse-tuple-definition define-tuple-class
 204     ] define-core-syntax
 205
 206     "final" [
 207         word make-final
 208     ] define-core-syntax
 209
 210     "SLOT:" [
 211         scan define-protocol-slot
 212     ] define-core-syntax
 213
 214     "C:" [
 215         CREATE-WORD scan-word define-boa-word
 216     ] define-core-syntax
 217
 218     "ERROR:" [
 219         parse-tuple-definition
 220         pick save-location
 221         define-error-class
 222     ] define-core-syntax
 223
 224     "FORGET:" [
 225         scan-object forget
 226     ] define-core-syntax
 227
 228     "(" [
 229         ")" parse-effect drop
 230     ] define-core-syntax
 231
 232     "((" [
 233         "))" parse-effect suffix!
 234     ] define-core-syntax
 235
 236     "MAIN:" [ scan-word current-vocab (>>main) ] define-core-syntax
 237
 238     "<<" [
 239         [
 240             \ >> parse-until >quotation
 241         ] with-nested-compilation-unit call( -- )
 242     ] define-core-syntax
 243
 244     "call-next-method" [
 245         current-method get [
 246             literalize suffix!
 247             \ (call-next-method) suffix!
 248         ] [
 249             not-in-a-method-error
 250         ] if*
 251     ] define-core-syntax
 252
 253     "initial:" "syntax" lookup define-symbol
 254
 255     "read-only" "syntax" lookup define-symbol
 256
 257     "call(" [ \ call-effect parse-call( ] define-core-syntax
 258
 259     "execute(" [ \ execute-effect parse-call( ] define-core-syntax
 260 ] with-compilation-unit