74d744dd00
Adding the proposed recognizers vocabulary, including a limited test. Fixing windows build to better handle different VS versions. Fixing various hidden word bugs. Adding 3DUP opcode. Bumping version number.
99 lines
3.3 KiB
Forth
99 lines
3.3 KiB
Forth
\ Copyright 2021 Bradley D. Nelson
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\
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\ Licensed under the Apache License, Version 2.0 (the "License");
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\ you may not use this file except in compliance with the License.
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\ You may obtain a copy of the License at
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\
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\ http://www.apache.org/licenses/LICENSE-2.0
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\
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\ Unless required by applicable law or agreed to in writing, software
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\ distributed under the License is distributed on an "AS IS" BASIS,
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\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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\ See the License for the specific language governing permissions and
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\ limitations under the License.
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( Implement Vocabularies )
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( normal: link, flags&len, code )
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( vocab: link, flags&len, code | link , len=0, voclink )
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variable last-vocabulary
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: vocabulary ( "name" )
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create current @ 2 cells + , 0 , last-vocabulary @ ,
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current @ @ last-vocabulary !
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does> context ! ;
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: definitions context @ current ! ;
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vocabulary FORTH
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' forth >body @ >link ' forth >body !
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forth definitions
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( Make it easy to transfer words between vocabularies )
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: xt-find& ( xt -- xt& ) context @ begin 2dup @ <> while @ >link& repeat nip ;
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: xt-hide ( xt -- ) xt-find& dup @ >link swap ! ;
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8 constant BUILTIN_MARK
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: xt-transfer ( xt -- ) dup >flags BUILTIN_MARK and if drop exit then
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dup xt-hide current @ @ over >link& ! current @ ! ;
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: transfer ( "name" ) ' xt-transfer ;
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: }transfer ;
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: transfer{ begin ' dup ['] }transfer = if drop exit then xt-transfer again ;
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( Watered down versions of these )
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: only forth 0 context cell+ ! ;
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: voc-stack-end ( -- a ) context begin dup @ while cell+ repeat ;
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: also context context cell+ voc-stack-end over - 2 cells + cmove> ;
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: previous
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voc-stack-end context cell+ = throw
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context cell+ context voc-stack-end over - cell+ cmove ;
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: sealed 0 last-vocabulary @ >body ! ;
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( Hide some words in an internals vocabulary )
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vocabulary internals internals definitions
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( Vocabulary chain for current scope, place at the -1 position )
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variable scope scope context cell - !
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transfer{
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xt-find& xt-hide xt-transfer
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voc-stack-end last-vocabulary notfound
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*key *emit wascr eat-till-cr
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immediate? input-buffer ?echo ?arrow. arrow
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evaluate-buffer evaluate&fill aliteral value-bind
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leaving( )leaving leaving leaving,
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parse-quote digit $@ raw.s
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tib-setup input-limit sp-limit ?stack
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[SKIP] [SKIP]' raw-ok boot-prompt free.
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$place zplace BUILTIN_MARK
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nest-depth handler +evaluate1 do-notfound
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}transfer
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( Move branching opcodes to separate vocabulary. )
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vocabulary internalized internalized definitions
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: cleave ' >link xt-transfer ;
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cleave begin cleave again cleave until
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cleave ahead cleave then cleave if
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cleave else cleave while cleave repeat
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cleave aft cleave for cleave next
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cleave do cleave ?do cleave +loop
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cleave loop cleave leave
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forth definitions
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( Move recognizers to separate vocabulary )
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vocabulary recognizers recognizers definitions
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transfer{
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REC-FIND REC-NUM
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RECTYPE: RECTYPE-NONE RECTYPE-WORD RECTYPE-IMM RECTYPE-NUM
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SET-RECOGNIZERS GET-RECOGNIZERS
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-RECOGNIZER +RECOGNIZER RECSTACK
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RECOGNIZE
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}transfer
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forth definitions
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( Make DOES> switch to compile mode when interpreted )
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(
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forth definitions internals
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' does>
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: does> state @ if postpone does> exit then
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['] constant @ current @ @ dup >r !
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here r> cell+ ! postpone ] ; immediate
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xt-hide
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forth definitions
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)
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