623 lines
23 KiB
OCaml
623 lines
23 KiB
OCaml
(*****************************************************************************)
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(* *)
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(* Open Source License *)
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(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com> *)
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(* *)
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(* Permission is hereby granted, free of charge, to any person obtaining a *)
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(* copy of this software and associated documentation files (the "Software"),*)
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(* to deal in the Software without restriction, including without limitation *)
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(* the rights to use, copy, modify, merge, publish, distribute, sublicense, *)
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(* and/or sell copies of the Software, and to permit persons to whom the *)
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(* Software is furnished to do so, subject to the following conditions: *)
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(* *)
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(* The above copyright notice and this permission notice shall be included *)
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(* in all copies or substantial portions of the Software. *)
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(* *)
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(* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR*)
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(* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *)
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(* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *)
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(* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER*)
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(* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *)
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(* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *)
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(* DEALINGS IN THE SOFTWARE. *)
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(* *)
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(*****************************************************************************)
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open Alpha_context
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open Script
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open Script_tc_errors
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(* Helpers for encoding *)
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let type_map_enc =
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let open Data_encoding in
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let stack_enc = list (tup2 Script.expr_encoding (list string)) in
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list
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(conv
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(fun (loc, (bef, aft)) -> (loc, bef, aft))
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(fun (loc, bef, aft) -> (loc, (bef, aft)))
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(obj3
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(req "location" Script.location_encoding)
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(req "stack_before" stack_enc)
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(req "stack_after" stack_enc)))
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let stack_ty_enc =
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let open Data_encoding in
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(list
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(obj2
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(req "type" Script.expr_encoding)
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(dft "annots" (list string) [])))
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(* main registration *)
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let () =
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let open Data_encoding in
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let located enc =
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merge_objs
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(obj1 (req "location" Script.location_encoding))
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enc in
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let arity_enc =
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int8 in
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let namespace_enc =
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def "primitiveNamespace"
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~title: "Primitive namespace"
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~description:
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"One of the three possible namespaces of primitive \
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(data constructor, type name or instruction)." @@
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string_enum [ "type", Type_namespace ;
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"constant", Constant_namespace ;
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"instruction", Instr_namespace ] in
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let kind_enc =
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def "expressionKind"
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~title: "Expression kind"
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~description:
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"One of the four possible kinds of expression \
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(integer, string, primitive application or sequence)." @@
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string_enum [ "integer", Int_kind ;
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"string", String_kind ;
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"bytes", Bytes_kind ;
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"primitiveApplication", Prim_kind ;
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"sequence", Seq_kind ] in
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(* -- Structure errors ---------------------- *)
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(* Invalid arity *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.invalid_arity"
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~title: "Invalid arity"
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~description:
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"In a script or data expression, a primitive was applied \
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to an unsupported number of arguments."
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(located (obj3
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(req "primitive_name" Script.prim_encoding)
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(req "expected_arity" arity_enc)
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(req "wrong_arity" arity_enc)))
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(function
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| Invalid_arity (loc, name, exp, got) ->
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Some (loc, (name, exp, got))
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| _ -> None)
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(fun (loc, (name, exp, got)) ->
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Invalid_arity (loc, name, exp, got)) ;
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(* Missing field *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.missing_script_field"
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~title:"Script is missing a field (parse error)"
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~description:
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"When parsing script, a field was expected, but not provided"
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(obj1 (req "prim" prim_encoding))
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(function Missing_field prim -> Some prim | _ -> None)
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(fun prim -> Missing_field prim) ;
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(* Invalid primitive *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.invalid_primitive"
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~title: "Invalid primitive"
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~description:
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"In a script or data expression, a primitive was unknown."
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(located (obj2
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(dft "expected_primitive_names" (list prim_encoding) [])
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(req "wrong_primitive_name" prim_encoding)))
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(function
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| Invalid_primitive (loc, exp, got) -> Some (loc, (exp, got))
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| _ -> None)
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(fun (loc, (exp, got)) ->
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Invalid_primitive (loc, exp, got)) ;
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(* Invalid kind *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.invalid_expression_kind"
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~title: "Invalid expression kind"
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~description:
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"In a script or data expression, an expression was of the wrong kind \
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(for instance a string where only a primitive applications can appear)."
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(located (obj2
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(req "expected_kinds" (list kind_enc))
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(req "wrong_kind" kind_enc)))
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(function
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| Invalid_kind (loc, exp, got) -> Some (loc, (exp, got))
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| _ -> None)
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(fun (loc, (exp, got)) ->
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Invalid_kind (loc, exp, got)) ;
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(* Invalid namespace *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.invalid_primitive_namespace"
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~title: "Invalid primitive namespace"
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~description:
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"In a script or data expression, a primitive was of the wrong namespace."
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(located (obj3
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(req "primitive_name" prim_encoding)
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(req "expected_namespace" namespace_enc)
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(req "wrong_namespace" namespace_enc)))
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(function
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| Invalid_namespace (loc, name, exp, got) -> Some (loc, (name, exp, got))
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| _ -> None)
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(fun (loc, (name, exp, got)) ->
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Invalid_namespace (loc, name, exp, got)) ;
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(* Duplicate field *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.duplicate_script_field"
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~title: "Script has a duplicated field (parse error)"
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~description:
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"When parsing script, a field was found more than once"
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(obj2
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(req "loc" location_encoding)
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(req "prim" prim_encoding))
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(function Duplicate_field (loc, prim) -> Some (loc, prim) | _ -> None)
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(fun (loc, prim) -> Duplicate_field (loc, prim)) ;
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(* Unexpected big_map *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.unexpected_bigmap"
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~title: "Big map in unauthorized position (type error)"
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~description:
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"When parsing script, a big_map type was found somewhere else \
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than in the left component of the toplevel storage pair."
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(obj1
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(req "loc" location_encoding))
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(function Unexpected_big_map loc -> Some loc | _ -> None)
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(fun loc -> Unexpected_big_map loc) ;
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(* Unexpected operation *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.unexpected_operation"
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~title: "Big map in unauthorized position (type error)"
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~description:
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"When parsing script, a operation type was found \
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in the storage or parameter field."
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(obj1
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(req "loc" location_encoding))
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(function Unexpected_operation loc -> Some loc | _ -> None)
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(fun loc -> Unexpected_operation loc) ;
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(* -- Value typing errors ---------------------- *)
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(* Unordered map keys *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.unordered_map_literal"
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~title:"Invalid map key order"
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~description:"Map keys must be in strictly increasing order"
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(obj2
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(req "location" Script.location_encoding)
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(req "item" Script.expr_encoding))
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(function
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| Unordered_map_keys (loc, expr) -> Some (loc, expr)
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| _ -> None)
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(fun (loc, expr) -> Unordered_map_keys (loc, expr));
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(* Duplicate map keys *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.duplicate_map_keys"
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~title:"Duplicate map keys"
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~description:"Map literals cannot contain duplicated keys"
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(obj2
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(req "location" Script.location_encoding)
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(req "item" Script.expr_encoding))
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(function
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| Duplicate_map_keys (loc, expr) -> Some (loc, expr)
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| _ -> None)
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(fun (loc, expr) -> Duplicate_map_keys (loc, expr));
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(* Unordered set values *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.unordered_set_literal"
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~title:"Invalid set value order"
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~description:"Set values must be in strictly increasing order"
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(obj2
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(req "location" Script.location_encoding)
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(req "value" Script.expr_encoding))
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(function
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| Unordered_set_values (loc, expr) -> Some (loc, expr)
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| _ -> None)
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(fun (loc, expr) -> Unordered_set_values (loc, expr));
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(* Duplicate set values *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.duplicate_set_values_in_literal"
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~title:"Sets literals cannot contain duplicate elements"
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~description:"Set literals cannot contain duplicate elements, \
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but a duplicae was found while parsing."
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(obj2
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(req "location" Script.location_encoding)
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(req "value" Script.expr_encoding))
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(function
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| Duplicate_set_values (loc, expr) -> Some (loc, expr)
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| _ -> None)
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(fun (loc, expr) -> Duplicate_set_values (loc, expr));
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(* -- Instruction typing errors ------------- *)
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(* Fail not in tail position *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.fail_not_in_tail_position"
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~title: "FAIL not in tail position"
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~description:
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"There is non trivial garbage code after a FAIL instruction."
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(located empty)
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(function
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| Fail_not_in_tail_position loc -> Some (loc, ())
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| _ -> None)
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(fun (loc, ()) ->
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Fail_not_in_tail_position loc) ;
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(* Undefined binary operation *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.undefined_binop"
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~title: "Undefined binop"
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~description:
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"A binary operation is called on operands of types \
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over which it is not defined."
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(located (obj3
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(req "operator_name" prim_encoding)
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(req "wrong_left_operand_type" Script.expr_encoding)
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(req "wrong_right_operand_type" Script.expr_encoding)))
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(function
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| Undefined_binop (loc, n, tyl, tyr) ->
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Some (loc, (n, tyl, tyr))
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| _ -> None)
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(fun (loc, (n, tyl, tyr)) ->
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Undefined_binop (loc, n, tyl, tyr)) ;
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(* Undefined unary operation *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.undefined_unop"
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~title: "Undefined unop"
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~description:
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"A unary operation is called on an operand of type \
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over which it is not defined."
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(located (obj2
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(req "operator_name" prim_encoding)
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(req "wrong_operand_type" Script.expr_encoding)))
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(function
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| Undefined_unop (loc, n, ty) ->
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Some (loc, (n, ty))
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| _ -> None)
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(fun (loc, (n, ty)) ->
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Undefined_unop (loc, n, ty)) ;
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(* Bad return *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.bad_return"
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~title: "Bad return"
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~description:
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"Unexpected stack at the end of a lambda or script."
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(located (obj2
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(req "expected_return_type" Script.expr_encoding)
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(req "wrong_stack_type" stack_ty_enc)))
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(function
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| Bad_return (loc, sty, ty) -> Some (loc, (ty, sty))
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| _ -> None)
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(fun (loc, (ty, sty)) ->
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Bad_return (loc, sty, ty)) ;
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(* Bad stack *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.bad_stack"
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~title: "Bad stack"
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~description:
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"The stack has an unexpected length or contents."
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(located (obj3
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(req "primitive_name" prim_encoding)
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(req "relevant_stack_portion" int16)
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(req "wrong_stack_type" stack_ty_enc)))
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(function
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| Bad_stack (loc, name, s, sty) -> Some (loc, (name, s, sty))
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| _ -> None)
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(fun (loc, (name, s, sty)) ->
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Bad_stack (loc, name, s, sty)) ;
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(* Inconsistent annotations *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.inconsistent_annotations"
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~title:"Annotations inconsistent between branches"
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~description:"The annotations on two types could not be merged"
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(obj2
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(req "annot1" string)
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(req "annot2" string))
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(function Inconsistent_annotations (annot1, annot2) -> Some (annot1, annot2)
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| _ -> None)
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(fun (annot1, annot2) -> Inconsistent_annotations (annot1, annot2)) ;
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(* Inconsistent field annotations *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.inconsistent_field_annotations"
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~title:"Annotations for field accesses is inconsistent"
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~description:"The specified field does not match the field annotation in the type"
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(obj2
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(req "annot1" string)
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(req "annot2" string))
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(function Inconsistent_field_annotations (annot1, annot2) -> Some (annot1, annot2)
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| _ -> None)
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(fun (annot1, annot2) -> Inconsistent_field_annotations (annot1, annot2)) ;
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(* Inconsistent type annotations *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.inconsistent_type_annotations"
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~title:"Types contain inconsistent annotations"
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~description:"The two types contain annotations that do not match"
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(located (obj2
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(req "type1" Script.expr_encoding)
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(req "type2" Script.expr_encoding)))
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(function
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| Inconsistent_type_annotations (loc, ty1, ty2) -> Some (loc, (ty1, ty2))
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| _ -> None)
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(fun (loc, (ty1, ty2)) -> Inconsistent_type_annotations (loc, ty1, ty2)) ;
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(* Unexpected annotation *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.unexpected_annotation"
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~title:"An annotation was encountered where no annotation is expected"
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~description:"A node in the syntax tree was impropperly annotated"
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(located empty)
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(function Unexpected_annotation loc -> Some (loc, ())
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| _ -> None)
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(fun (loc, ()) -> Unexpected_annotation loc);
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(* Ungrouped annotations *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.ungrouped_annotations"
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~title:"Annotations of the same kind were found spread apart"
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~description:"Annotations of the same kind must be grouped"
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(located empty)
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(function Ungrouped_annotations loc -> Some (loc, ())
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| _ -> None)
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(fun (loc, ()) -> Ungrouped_annotations loc);
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(* Unmatched branches *)
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register_error_kind
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`Permanent
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~id:"michelson_v1.unmatched_branches"
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~title: "Unmatched branches"
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~description:
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"At the join point at the end of two code branches \
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the stacks have inconsistent lengths or contents."
|
|
(located (obj2
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(req "first_stack_type" stack_ty_enc)
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|
(req "other_stack_type" stack_ty_enc)))
|
|
(function
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| Unmatched_branches (loc, stya, styb) ->
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Some (loc, (stya, styb))
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| _ -> None)
|
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(fun (loc, (stya, styb)) ->
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Unmatched_branches (loc, stya, styb)) ;
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(* Bad stack item *)
|
|
register_error_kind
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|
`Permanent
|
|
~id:"michelson_v1.bad_stack_item"
|
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~title: "Bad stack item"
|
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~description:
|
|
"The type of a stack item is unexpected \
|
|
(this error is always accompanied by a more precise one)."
|
|
(obj1 (req "item_level" int16))
|
|
(function
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| Bad_stack_item n -> Some n
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| _ -> None)
|
|
(fun n ->
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Bad_stack_item n) ;
|
|
(* SELF in lambda *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.self_in_lambda"
|
|
~title: "SELF instruction in lambda"
|
|
~description:
|
|
"A SELF instruction was encountered in a lambda expression."
|
|
(located empty)
|
|
(function
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|
| Self_in_lambda loc -> Some (loc, ())
|
|
| _ -> None)
|
|
(fun (loc, ()) ->
|
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Self_in_lambda loc) ;
|
|
(* Bad stack length *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.inconsistent_stack_lengths"
|
|
~title: "Inconsistent stack lengths"
|
|
~description:
|
|
"A stack was of an unexpected length \
|
|
(this error is always in the context of a located error)."
|
|
empty
|
|
(function
|
|
| Bad_stack_length -> Some ()
|
|
| _ -> None)
|
|
(fun () ->
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Bad_stack_length) ;
|
|
(* -- Value typing errors ------------------- *)
|
|
(* Invalid constant *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.invalid_constant"
|
|
~title: "Invalid constant"
|
|
~description:
|
|
"A data expression was invalid for its expected type."
|
|
(located (obj2
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|
(req "expected_type" Script.expr_encoding)
|
|
(req "wrong_expression" Script.expr_encoding)))
|
|
(function
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|
| Invalid_constant (loc, expr, ty) ->
|
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Some (loc, (ty, expr))
|
|
| _ -> None)
|
|
(fun (loc, (ty, expr)) ->
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Invalid_constant (loc, expr, ty)) ;
|
|
(* Invalid contract *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.invalid_contract"
|
|
~title: "Invalid contract"
|
|
~description:
|
|
"A script or data expression references a contract that does not \
|
|
exist or assumes a wrong type for an existing contract."
|
|
(located (obj1 (req "contract" Contract.encoding)))
|
|
(function
|
|
| Invalid_contract (loc, c) ->
|
|
Some (loc, c)
|
|
| _ -> None)
|
|
(fun (loc, c) ->
|
|
Invalid_contract (loc, c)) ;
|
|
(* Comparable type expected *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.comparable_type_expected"
|
|
~title: "Comparable type expected"
|
|
~description:
|
|
"A non comparable type was used in a place where \
|
|
only comparable types are accepted."
|
|
(located (obj1 (req "wrong_type" Script.expr_encoding)))
|
|
(function
|
|
| Comparable_type_expected (loc, ty) -> Some (loc, ty)
|
|
| _ -> None)
|
|
(fun (loc, ty) ->
|
|
Comparable_type_expected (loc, ty)) ;
|
|
(* Inconsistent types *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.inconsistent_types"
|
|
~title: "Inconsistent types"
|
|
~description:
|
|
"This is the basic type clash error, \
|
|
that appears in several places where the equality of \
|
|
two types have to be proven, it is always accompanied \
|
|
with another error that provides more context."
|
|
(obj2
|
|
(req "first_type" Script.expr_encoding)
|
|
(req "other_type" Script.expr_encoding))
|
|
(function
|
|
| Inconsistent_types (tya, tyb) -> Some (tya, tyb)
|
|
| _ -> None)
|
|
(fun (tya, tyb) -> Inconsistent_types (tya, tyb)) ;
|
|
(* -- Instruction typing errors ------------------- *)
|
|
(* Invalid map body *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.invalid_map_body"
|
|
~title: "Invalid map body"
|
|
~description:
|
|
"The body of a map block did not match the expected type"
|
|
(obj2
|
|
(req "loc" Script.location_encoding)
|
|
(req "body_type" stack_ty_enc))
|
|
(function
|
|
| Invalid_map_body (loc, stack) -> Some (loc, stack)
|
|
| _ -> None)
|
|
(fun (loc, stack) -> Invalid_map_body (loc, stack)) ;
|
|
(* Invalid map block FAIL *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.invalid_map_block_fail"
|
|
~title:"FAIL instruction occurred as body of map block"
|
|
~description:"FAIL cannot be the only instruction in the body. \
|
|
The propper type of the return list cannot be inferred."
|
|
(obj1 (req "loc" Script.location_encoding))
|
|
(function
|
|
| Invalid_map_block_fail loc -> Some loc
|
|
| _ -> None)
|
|
(fun loc -> Invalid_map_block_fail loc) ;
|
|
(* Invalid ITER body *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.invalid_iter_body"
|
|
~title:"ITER body returned wrong stack type"
|
|
~description:"The body of an ITER instruction \
|
|
must result in the same stack type as before \
|
|
the ITER."
|
|
(obj3
|
|
(req "loc" Script.location_encoding)
|
|
(req "bef_stack" stack_ty_enc)
|
|
(req "aft_stack" stack_ty_enc))
|
|
(function
|
|
| Invalid_iter_body (loc, bef, aft) -> Some (loc, bef, aft)
|
|
| _ -> None)
|
|
(fun (loc, bef, aft) -> Invalid_iter_body (loc, bef, aft)) ;
|
|
(* Type too large *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.type_too_large"
|
|
~title:"Stack item type too large"
|
|
~description:"An instruction generated a type larger than the limit."
|
|
(obj3
|
|
(req "loc" Script.location_encoding)
|
|
(req "type_size" uint16)
|
|
(req "maximum_type_size" uint16))
|
|
(function
|
|
| Type_too_large (loc, ts, maxts) -> Some (loc, ts, maxts)
|
|
| _ -> None)
|
|
(fun (loc, ts, maxts) -> Type_too_large (loc, ts, maxts)) ;
|
|
(* -- Toplevel errors ------------------- *)
|
|
(* Ill typed data *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.ill_typed_data"
|
|
~title: "Ill typed data"
|
|
~description:
|
|
"The toplevel error thrown when trying to typecheck \
|
|
a data expression against a given type \
|
|
(always followed by more precise errors)."
|
|
(obj3
|
|
(opt "identifier" string)
|
|
(req "expected_type" Script.expr_encoding)
|
|
(req "ill_typed_expression" Script.expr_encoding))
|
|
(function
|
|
| Ill_typed_data (name, expr, ty) -> Some (name, ty, expr)
|
|
| _ -> None)
|
|
(fun (name, ty, expr) -> Ill_typed_data (name, expr, ty)) ;
|
|
(* Ill formed type *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.ill_formed_type"
|
|
~title: "Ill formed type"
|
|
~description:
|
|
"The toplevel error thrown when trying to parse a type expression \
|
|
(always followed by more precise errors)."
|
|
(obj3
|
|
(opt "identifier" string)
|
|
(req "ill_formed_expression" Script.expr_encoding)
|
|
(req "location" Script.location_encoding))
|
|
(function
|
|
| Ill_formed_type (name, expr, loc) -> Some (name, expr, loc)
|
|
| _ -> None)
|
|
(fun (name, expr, loc) ->
|
|
Ill_formed_type (name, expr, loc)) ;
|
|
(* Ill typed contract *)
|
|
register_error_kind
|
|
`Permanent
|
|
~id:"michelson_v1.ill_typed_contract"
|
|
~title: "Ill typed contract"
|
|
~description:
|
|
"The toplevel error thrown when trying to typecheck \
|
|
a contract code against given input, output and storage types \
|
|
(always followed by more precise errors)."
|
|
(obj2
|
|
(req "ill_typed_code" Script.expr_encoding)
|
|
(req "type_map" type_map_enc))
|
|
(function
|
|
| Ill_typed_contract (expr, type_map) ->
|
|
Some (expr, type_map)
|
|
| _ -> None)
|
|
(fun (expr, type_map) ->
|
|
Ill_typed_contract (expr, type_map)) ;
|
|
(* Cannot serialize error *)
|
|
register_error_kind
|
|
`Temporary
|
|
~id:"michelson_v1.cannot_serialize_error"
|
|
~title:"Not enough gas to serialize error"
|
|
~description:"The error was too big to be serialized with \
|
|
the provided gas"
|
|
Data_encoding.empty
|
|
(function Cannot_serialize_error -> Some () | _ -> None)
|
|
(fun () -> Cannot_serialize_error)
|