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open Lustre_types
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type register_t =
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| ResetFlag
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| StateVar of var_decl
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type left_v
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type right_v
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type ('a, _) expression_t =
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| Val: 'a -> ('a, right_v) expression_t
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| Tag: ident -> ('a, right_v) expression_t
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| Var: var_decl -> ('a, left_v) expression_t
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| Memory: register_t -> ('a, left_v) expression_t
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(** TODO: why moving this elsewhere makes the exhaustiveness check fail? *)
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let type_of_l_value: type a. (a, left_v) expression_t -> Types.type_expr =
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function
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| Var v -> v.var_type
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| Memory ResetFlag -> Type_predef.type_bool
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| Memory (StateVar v) -> v.var_type
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type ('a, 'b) expressions_t = ('a, 'b) expression_t list
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type 'a predicate_t =
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| Transition: ident * ident option * int option
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* ('a, 'b) expressions_t
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* ('a, 'b) expressions_t
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* ('a, 'b) expressions_t -> 'a predicate_t
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| MemoryPack of ident * ident option * int option
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| Initialization
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| ResetCleared of ident
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type 'a formula_t =
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| True
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| False
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| Equal: ('a, left_v) expression_t * ('a, 'b) expression_t -> 'a formula_t
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| And of 'a formula_t list
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| Or of 'a formula_t list
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| Imply of 'a formula_t * 'a formula_t
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| Exists of var_decl list * 'a formula_t
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| Forall of var_decl list * 'a formula_t
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| Ternary: ('a, 'b) expression_t * 'a formula_t * 'a formula_t -> 'a formula_t
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| Predicate: 'a predicate_t -> 'a formula_t
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| StateVarPack of register_t
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| ExistsMem of 'a formula_t * 'a formula_t
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(* type 'a simulation_t = {
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* sname: node_desc;
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* sindex: option int;
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* sformula: 'a formula_t;
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* } *)
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type 'a memory_pack_t = {
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mpname: node_desc;
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mpindex: int option;
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mpformula: 'a formula_t;
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}
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type 'a transition_t = {
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tname: node_desc;
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tindex: int option;
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tinputs: var_decl list;
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tlocals: var_decl list;
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toutputs: var_decl list;
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tformula: 'a formula_t;
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}
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