package elpi

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in-package search v0.2.0

elpi
- Elpi_API
  - Ast
  - Compile
    
    StrSet
  - Data
    
    StrMap
  - Execute
  - Extend
    
    BuiltInPredicate
    
    Notation
    
    CData
    
    Compile
    
    State
    
    CustomConstraint
    
    CustomFunctor
    
    Data
    
    C
    
    Constants
    
    Map
    
    Set
    
    Pp
    
    Raw
    
    Utils
  - Parse
  - Pp
    
    Ast
  - Setup
- Elpi_builtin

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This module exposes the low level representation of terms. * * The data type term is opaque and can only be accessed by using the * look API that exposes a term view. The look view automatically * substitutes assigned unification variables by their value. The UVar * and AppUVar node hence stand for unassigned unification variables.

type constant = int

De Bruijn levels (not indexes): the distance of the binder from the root. Starts at 0 and grows for bound variables; global constants have negative values.

type builtin

De Bruijn levels (not indexes): the distance of the binder from the root. Starts at 0 and grows for bound variables; global constants have negative values.

type uvar_body

type term

type view = private

| Const of constant
| Lam of term
| App of constant * term * term list
| Cons of term * term
| Nil
| Discard
| Builtin of builtin * term list
| CData of CData.t
| UVar of uvar_body * int * int
| AppUVar of uvar_body * int * term list
| Arg of int * int
| AppArg of int * term list

val mkConst : constant -> term

Smart constructors

val mkLam : term -> term

val mkApp : constant -> term -> term list -> term

val mkCons : term -> term -> term

val mkNil : term

val mkDiscard : term

val mkBuiltin : builtin -> term list -> term

val mkBuiltinName : string -> term list -> term

val mkCData : CData.t -> term

val mkUVar : uvar_body -> int -> int -> term

val mkAppUVar : uvar_body -> int -> term list -> term

val look : depth:int -> term -> view

Terms must be inspected after dereferencing their head. If the resulting term is UVar then its uvar_body is such that get_assignment uvar_body = None

val kool : view -> term

type clause_src = {

hdepth : int;
hsrc : term;

}

val of_term : Data.term -> term

val fresh_uvar_body : unit -> uvar_body

type custom_constraints = Data.custom_constraints

type solution = Data.solution

type idx

type hyps = clause_src list

type suspended_goal = {

context : hyps;
goal : int * term;

}

val constraints : Data.syntactic_constraints -> suspended_goal list

module C : sig ... end

LambdaProlog built-in data types

module Constants : sig ... end

LambdaProlog built-in global constants