87 lines
2.5 KiB
Racket
87 lines
2.5 KiB
Racket
#lang typed/racket/base
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(provide (all-defined-out))
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(require "il-structs.rkt")
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(define-type PrimitiveValue (Rec PrimitiveValue (U String Number Symbol Boolean
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Null Void
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undefined
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primitive-proc
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closure
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(Vectorof PrimitiveValue)
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MutablePair
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)))
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(define-type SlotValue (U PrimitiveValue
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(Boxof PrimitiveValue)
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toplevel
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CapturedControl
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CapturedEnvironment))
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(define-struct: MutablePair ([h : PrimitiveValue]
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[t : PrimitiveValue]))
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;; For continuation capture:
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(define-struct: CapturedControl ([frames : (Listof frame)]))
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(define-struct: CapturedEnvironment ([vals : (Listof SlotValue)]))
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(define-struct: machine ([val : SlotValue]
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[proc : SlotValue]
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[env : (Listof SlotValue)]
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[control : (Listof frame)]
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[pc : Natural] ;; program counter
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[text : (Vectorof Statement)] ;; text of the program
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;; other metrics for debugging
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[stack-size : Natural]
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)
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#:transparent
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#:mutable)
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(define-struct: frame ([return : Symbol]
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;; The procedure being called. Used to optimize self-application
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[proc : (U closure #f)]
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;; TODO: add continuation marks
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)
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#:transparent)
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(define-struct: toplevel ([vals : (Listof PrimitiveValue)])
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#:transparent
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#:mutable)
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;; Primitive procedure wrapper
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(define-struct: primitive-proc ([f : (machine Symbol PrimitiveValue * -> PrimitiveValue)])
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#:transparent)
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;; Compiled procedure closures
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(define-struct: closure ([label : Symbol]
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[arity : Natural]
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[vals : (Listof SlotValue)])
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#:transparent)
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;; undefined value
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(define-struct: undefined ()
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#:transparent)
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(define-predicate PrimitiveValue? PrimitiveValue)
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