57 lines
1.5 KiB
Racket
57 lines
1.5 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 Null
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primitive-proc
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closure
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undefined
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(Pairof PrimitiveValue PrimitiveValue)
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)))
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(define-type SlotValue (U PrimitiveValue toplevel))
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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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)
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#:transparent)
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(define-struct: frame ([return : Symbol]
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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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;; Primitive procedure wrapper
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(define-struct: primitive-proc ([f : (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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[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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