45 lines
1.1 KiB
Racket
45 lines
1.1 KiB
Racket
#lang typed/racket/base
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(require "arity-structs.rkt"
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"expression-structs.rkt"
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"lexical-structs.rkt"
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"kernel-primitives.rkt"
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"il-structs.rkt")
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(provide (all-defined-out))
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;; Static knowledge about an expression.
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;;
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;; We try to keep at compile time a mapping from environment positions to
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;; statically known things, to generate better code.
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(define-type CompileTimeEnvironment (Listof CompileTimeEnvironmentEntry))
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(define-type CompileTimeEnvironmentEntry
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(U '? ;; no knowledge
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Prefix ;; placeholder: necessary since the toplevel lives in the environment too
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StaticallyKnownLam ;; The value is a known lam
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ModuleVariable ;; The value is a variable from a module
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PrimitiveKernelValue
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Const
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))
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(define-struct: StaticallyKnownLam ([name : (U Symbol LamPositionalName)]
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[entry-point : Symbol]
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[arity : Arity]) #:transparent)
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(define-struct: Analysis ([ht : (HashTable Expression CompileTimeEnvironmentEntry)]))
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(: empty-analysis (-> Analysis))
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(define (empty-analysis)
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(make-Analysis (make-hash))) |