78 lines
2.1 KiB
Factor
78 lines
2.1 KiB
Factor
! Copyright (C) 2009 Jose Antonio Ortega Ruiz.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays continuations debugger fuel.pprint io
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io.streams.string kernel listener namespaces prettyprint.config sequences
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vocabs.parser ;
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IN: fuel.eval
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TUPLE: fuel-status manifest restarts ;
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SYMBOL: fuel-status-stack
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V{ } clone fuel-status-stack set-global
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SYMBOL: fuel-eval-error
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f fuel-eval-error set-global
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SYMBOL: fuel-eval-result
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f fuel-eval-result set-global
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SYMBOL: fuel-eval-output
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f fuel-eval-result set-global
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SYMBOL: fuel-eval-res-flag
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t fuel-eval-res-flag set-global
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: fuel-eval-restartable? ( -- ? )
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fuel-eval-res-flag get-global ;
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: fuel-push-status ( -- )
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manifest get clone restarts get-global clone
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fuel-status boa
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fuel-status-stack get push ;
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: fuel-pop-restarts ( restarts -- )
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fuel-eval-restartable? [ drop ] [ clone restarts set-global ] if ;
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: fuel-pop-status ( -- )
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fuel-status-stack get [
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pop
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[ manifest>> clone manifest set ]
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[ restarts>> fuel-pop-restarts ]
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bi
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] unless-empty ;
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: fuel-forget-error ( -- ) f fuel-eval-error set-global ;
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: fuel-forget-result ( -- ) f fuel-eval-result set-global ;
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: fuel-forget-output ( -- ) f fuel-eval-output set-global ;
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: fuel-forget-status ( -- )
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fuel-forget-error fuel-forget-result fuel-forget-output ;
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: fuel-send-retort ( -- )
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fuel-eval-error get-global
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fuel-eval-result get-global
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fuel-eval-output get-global 3array
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[ fuel-pprint ] without-limits
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flush nl "<~FUEL~>" write nl flush ;
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: (fuel-begin-eval) ( -- )
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fuel-push-status fuel-forget-status ;
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: (fuel-end-eval) ( output -- )
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fuel-eval-output set-global fuel-send-retort fuel-pop-status ;
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: (fuel-eval) ( lines -- )
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[ parse-lines-interactive call( -- ) ] curry
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[ [ fuel-eval-error set-global ] [ print-error ] bi ] recover ;
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: (fuel-eval-usings) ( usings -- )
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[ [ use-vocab ] curry [ drop ] recover ] each ;
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: (fuel-eval-in) ( in -- )
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[ set-current-vocab ] when* ;
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: (fuel-eval-in-context) ( lines in usings -- )
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(fuel-begin-eval)
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[ (fuel-eval-usings) (fuel-eval-in) (fuel-eval) ] with-string-writer
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(fuel-end-eval) ;
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