Lean.ToExpr

We use the ToExpr type class to convert values of type α into expressions that denote these values in Lean. Example:

toExpr true = .const ``Bool.true []

toExpr : α → Lean.Expr
Convert a value a : α into an expression that denotes a
toTypeExpr : Lean.Expr
Expression representing the type α

Instances

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instance Lean.instToExprNat :

Lean.ToExpr Nat

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instance Lean.instToExprInt :

Lean.ToExpr Int

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def Lean.instToExprInt.mkNat (n : Nat) :

Lean.Expr

Instances For

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instance Lean.instToExprFin {n : Nat} :

Lean.ToExpr (Fin n)

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instance Lean.instToExprBitVec {n : Nat} :

Lean.ToExpr (BitVec n)

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instance Lean.instToExprUInt8 :

Lean.ToExpr UInt8

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instance Lean.instToExprUInt16 :

Lean.ToExpr UInt16

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instance Lean.instToExprUInt32 :

Lean.ToExpr UInt32

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instance Lean.instToExprUInt64 :

Lean.ToExpr UInt64

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instance Lean.instToExprUSize :

Lean.ToExpr USize

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instance Lean.instToExprBool :

Lean.ToExpr Bool

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instance Lean.instToExprChar :

Lean.ToExpr Char

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instance Lean.instToExprString :

Lean.ToExpr String

Equations

Lean.instToExprString = { toExpr := Lean.mkStrLit, toTypeExpr := Lean.mkConst `String }

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instance Lean.instToExprUnit :

Lean.ToExpr Unit

Equations

Lean.instToExprUnit = { toExpr := fun (x : Unit) => Lean.mkConst `Unit.unit, toTypeExpr := Lean.mkConst `Unit }

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instance Lean.instToExprFilePath :

Lean.ToExpr System.FilePath

Equations

Lean.instToExprFilePath = { toExpr := fun (p : System.FilePath) => Lean.mkApp (Lean.mkConst `System.FilePath.mk) (Lean.toExpr p.toString), toTypeExpr := Lean.mkConst `System.FilePath }

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instance Lean.instToExprName :

Lean.ToExpr Lean.Name

Equations

Lean.instToExprName = { toExpr := Lean.Name.toExprAux✝, toTypeExpr := Lean.mkConst `Lean.Name }

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instance Lean.instToExprOption {α : Type u_1} [Lean.ToExpr α] :

Lean.ToExpr (Option α)

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instance Lean.instToExprList {α : Type u_1} [Lean.ToExpr α] :

Lean.ToExpr (List α)

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instance Lean.instToExprArray {α : Type u_1} [Lean.ToExpr α] :

Lean.ToExpr (Array α)

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instance Lean.instToExprProd {α : Type u_1} {β : Type u_2} [Lean.ToExpr α] [Lean.ToExpr β] :

Lean.ToExpr (α × β)

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instance Lean.instToExprLiteral :

Lean.ToExpr Lean.Literal

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instance Lean.instToExprFVarId :

Lean.ToExpr Lean.FVarId

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instance Lean.instToExprPreresolved :

Lean.ToExpr Lean.Syntax.Preresolved

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def Lean.Expr.toCtorIfLit :

Lean.Expr → Lean.Expr

Equations

(Lean.Expr.lit (Lean.Literal.natVal v)).toCtorIfLit = if (v == 0) = true then Lean.mkConst `Nat.zero else Lean.mkApp (Lean.mkConst `Nat.succ) (Lean.mkRawNatLit (v - 1))
(Lean.Expr.lit (Lean.Literal.strVal v)).toCtorIfLit = Lean.mkApp (Lean.mkConst `String.mk) (Lean.toExpr v.toList)
x.toCtorIfLit = x

Instances For