luau/prototyping/Luau/RuntimeError/ToString.agda
Lily Brown 7f867ac166
Prototyping: numbers (#368)
Adds number support to the prototype. Binary operators are next.
2022-02-18 11:09:00 -08:00

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1.2 KiB
Agda

module Luau.RuntimeError.ToString where
open import Agda.Builtin.Float using (primShowFloat)
open import FFI.Data.String using (String; _++_)
open import Luau.RuntimeError using (RuntimeErrorᴮ; RuntimeErrorᴱ; local; return; NilIsNotAFunction; NumberIsNotAFunction; UnboundVariable; SEGV; app; block)
open import Luau.Addr.ToString using (addrToString)
open import Luau.Syntax.ToString using (exprToString)
open import Luau.Var.ToString using (varToString)
open import Luau.Syntax using (name; _$_)
errToStringᴱ : {a H B} RuntimeErrorᴱ {a} H B String
errToStringᴮ : {a H B} RuntimeErrorᴮ {a} H B String
errToStringᴱ NilIsNotAFunction = "nil is not a function"
errToStringᴱ (NumberIsNotAFunction n) = "number " ++ primShowFloat n ++ " is not a function"
errToStringᴱ (UnboundVariable x) = "variable " ++ varToString x ++ " is unbound"
errToStringᴱ (SEGV a x) = "address " ++ addrToString a ++ " is unallocated"
errToStringᴱ (app E) = errToStringᴱ E
errToStringᴱ (block b E) = errToStringᴮ E ++ "\n in call of function " ++ varToString b
errToStringᴮ (local x E) = errToStringᴱ E ++ "\n in definition of " ++ varToString (name x)
errToStringᴮ (return E) = errToStringᴱ E ++ "\n in return statement"