152 lines
5.5 KiB
Racket
152 lines
5.5 KiB
Racket
#lang typed/racket/base
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(require "il-structs.rkt"
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"lexical-structs.rkt"
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"assemble-helpers.rkt"
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"kernel-primitives.rkt"
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racket/string
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racket/list)
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(provide open-code-kernel-primitive-procedure)
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(: open-code-kernel-primitive-procedure (CallKernelPrimitiveProcedure -> String))
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(define (open-code-kernel-primitive-procedure op)
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(let*: ([operator : KernelPrimitiveName (CallKernelPrimitiveProcedure-operator op)]
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[operands : (Listof String) (map assemble-input (CallKernelPrimitiveProcedure-operands op))]
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[checked-operands : (Listof String)
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(map maybe-typecheck-operand
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(CallKernelPrimitiveProcedure-expected-operand-types op)
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(build-list (length operands) (lambda: ([i : Natural]) i))
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operands
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(CallKernelPrimitiveProcedure-typechecks? op))])
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(case operator
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[(+)
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(cond [(empty? checked-operands)
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"0"]
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[else
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(string-append "(" (string-join checked-operands " + ") ")")])]
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[(-)
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(cond [(empty? (rest checked-operands))
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(format "(-(~a))" (first checked-operands))]
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[else
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(string-append "(" (string-join checked-operands "-") ")")])]
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[(*)
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(cond [(empty? checked-operands)
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"1"]
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[else
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(string-append "(" (string-join checked-operands "*") ")")])]
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[(/)
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(string-append "(" (string-join checked-operands "/") ")")]
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[(add1)
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(format "(~a + 1)" (first checked-operands))]
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[(sub1)
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(format "(~a - 1)" (first checked-operands))]
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[(<)
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(assemble-chain "<" checked-operands)]
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[(<=)
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(assemble-chain "<=" checked-operands)]
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[(=)
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(assemble-chain "===" checked-operands)]
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[(>)
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(assemble-chain ">" checked-operands)]
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[(>=)
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(assemble-chain ">=" checked-operands)]
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[(cons)
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(format "[~a, ~a]" (first checked-operands) (second checked-operands))]
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[(car)
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(format "(~a)[0]" (first checked-operands))]
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[(cdr)
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(format "(~a)[1]" (first checked-operands))]
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[(list)
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(let loop ([checked-operands checked-operands])
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(cond
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[(empty? checked-operands)
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"RUNTIME.NULL"]
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[else
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(format "[~a,~a]" (first checked-operands) (loop (rest checked-operands)))]))]
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[(null?)
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(format "(~a === RUNTIME.NULL)" (first checked-operands))]
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[(not)
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(format "(!(~a))" (first checked-operands))]
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[(eq?)
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(format "(~a === ~a)" (first checked-operands) (second checked-operands))])))
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(: assemble-chain (String (Listof String) -> String))
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(define (assemble-chain rator rands)
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(string-append "("
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(string-join (let: loop : (Listof String) ([rands : (Listof String) rands])
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(cond
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[(empty? rands)
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'()]
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[(empty? (rest rands))
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'()]
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[else
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(cons (format "(~a ~a ~a)" (first rands) rator (second rands))
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(loop (rest rands)))]))
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"&&")
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")"))
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(: assemble-domain-check (OperandDomain String Natural -> String))
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(define (assemble-domain-check domain operand-string pos)
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(cond
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[(eq? domain 'any)
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operand-string]
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[else
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(let: ([test-string : String
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(case domain
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[(number)
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(format "(typeof(~a) === 'number')"
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operand-string)]
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[(string)
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(format "(typeof(~a) === 'string')"
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operand-string)]
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[(list)
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(format "(~a === [] || (typeof(~a) === 'object' && (~a).length === 2))"
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operand-string operand-string operand-string)]
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[(pair)
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(format "(typeof(~a) === 'object' && (~a).length === 2)"
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operand-string operand-string)]
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[(box)
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(format "(typeof(~a) === 'object' && (~a).length === 1)"
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operand-string operand-string)])])
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(format "((~a) ? (~a) : RUNTIME.raise(new Error('Expected ' + ~s + ' as argument ' + ~s + ' but received ' + ~a)))"
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test-string
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operand-string
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(symbol->string domain)
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(add1 pos)
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operand-string))]))
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(: maybe-typecheck-operand (OperandDomain Natural String Boolean -> String))
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;; Adds typechecks if we can't prove that the operand is of the required type.
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(define (maybe-typecheck-operand domain-type position operand-string typecheck?)
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(cond
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[typecheck?
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(assemble-domain-check domain-type operand-string position)]
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[else
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operand-string]))
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