Enum DiagCode 

pub enum DiagCode {
    E0001 = 1,
    E0002 = 2,
    E0003 = 3,
    E0004 = 4,
    E0005 = 5,
    E0006 = 6,
    E0007 = 7,
    E0008 = 8,
    E0009 = 9,
    E0010 = 10,
    E0011 = 11,
    E0012 = 12,
    E0013 = 13,
    E0014 = 14,
    E0015 = 15,
    E0016 = 16,
    E0017 = 17,
    E0018 = 18,
    E0019 = 19,
    E0020 = 20,
    E0021 = 21,
    E0022 = 22,
    E0023 = 23,
    E0024 = 24,
    E0025 = 25,
    E0026 = 26,
    E0027 = 27,
    E0028 = 28,
    E0029 = 29,
    E0030 = 30,
    E0031 = 31,
    E0032 = 32,
    E0033 = 33,
    E0034 = 34,
    E0035 = 35,
    E0036 = 36,
    E0037 = 37,
    E0038 = 38,
    E0039 = 39,
    E0040 = 40,
    E0041 = 41,
    E0042 = 42,
    E0043 = 43,
    E0044 = 44,
    E0045 = 45,
    E0046 = 46,
    E0047 = 47,
    E0048 = 48,
    E0049 = 49,
    E0050 = 50,
    E0051 = 51,
    E0052 = 52,
    E0053 = 53,
    E0054 = 54,
    E0055 = 55,
    E0056 = 56,
    E0057 = 57,
    E0058 = 58,
    E0059 = 59,
    E0060 = 60,
    E0061 = 61,
    E0062 = 62,
    E0063 = 63,
    E0065 = 65,
    E0066 = 66,
    E0067 = 67,
    E1001 = 1_001,
    E1002 = 1_002,
    E2007 = 2_007,
    E2008 = 2_008,
    E2009 = 2_009,
    E2010 = 2_010,
    E2011 = 2_011,
    E2012 = 2_012,
    E2013 = 2_013,
    E3001 = 3_001,
    E3002 = 3_002,
    E3003 = 3_003,
    E3004 = 3_004,
    E3006 = 3_006,
    E3007 = 3_007,
    E3008 = 3_008,
    E3010 = 3_010,
    E3011 = 3_011,
    E4001 = 4_001,
    E4010 = 4_010,
    E4011 = 4_011,
    E4012 = 4_012,
    E4013 = 4_013,
    E4014 = 4_014,
    E4015 = 4_015,
    E4016 = 4_016,
    E4017 = 4_017,
    E4018 = 4_018,
    E4019 = 4_019,
    E5003 = 5_003,
    E5010 = 5_010,
    E5011 = 5_011,
    E5012 = 5_012,
    E0064 = 64,
    E0068 = 68,
    E0069 = 69,
    E0070 = 70,
    E0071 = 71,
    E0072 = 72,
    E0078 = 78,
    E0079 = 79,
    E0080 = 80,
    E0081 = 81,
    E0082 = 82,
    W6001 = 6_001,
    W6002 = 6_002,
    W6003 = 6_003,
    W6004 = 6_004,
    W6005 = 6_005,
    W6006 = 6_006,
    W6007 = 6_007,
    W6010 = 6_010,
    W7001 = 7_001,
    W7002 = 7_002,
    W7003 = 7_003,
    W7004 = 7_004,
    N8001 = 8_001,
    N8002 = 8_002,
    N8003 = 8_003,
}

Stable diagnostic code. Rendered as E0001 / W6001 / N8001.

Variants

E0001 = 1

Generic / unclassified syntax error.

Docs: docs/errors/E0001.md

E0002 = 2

Unexpected token encountered.

Docs: docs/errors/E0002.md

E0003 = 3

Expected <token>, found <token>.

Docs: docs/errors/E0003.md

E0004 = 4

Unclosed string literal (missing closing quote).

Docs: docs/errors/E0004.md

E0005 = 5

Unclosed block comment (missing */).

Docs: docs/errors/E0005.md

E0006 = 6

Invalid numeric literal (bad digits or suffix).

Docs: docs/errors/E0006.md

E0007 = 7

Expected a statement (clause keyword) but found something else.

Docs: docs/errors/E0007.md

E0008 = 8

Expected ; or end of input after statement.

Docs: docs/errors/E0008.md

E0009 = 9

Expected ( to start a node pattern.

Docs: docs/errors/E0009.md

E0010 = 10

Expected a node pattern after a relationship pattern.

Docs: docs/errors/E0010.md

E0011 = 11

Expected ) to close a node pattern.

Docs: docs/errors/E0011.md

E0012 = 12

Expected - at the start of a relationship pattern.

Docs: docs/errors/E0012.md

E0013 = 13

Expected - to close a left-arrow relationship pattern.

Docs: docs/errors/E0013.md

E0014 = 14

Expected - or -> to close a relationship pattern.

Docs: docs/errors/E0014.md

E0015 = 15

Expected ] to close a relationship detail block.

Docs: docs/errors/E0015.md

E0016 = 16

Expected a label name after :.

Docs: docs/errors/E0016.md

E0017 = 17

Expected a relationship type name after :.

Docs: docs/errors/E0017.md

E0018 = 18

Expected } to close a property map.

Docs: docs/errors/E0018.md

E0019 = 19

Expected a property key identifier.

Docs: docs/errors/E0019.md

E0020 = 20

Expected : separating a property key from its value.

Docs: docs/errors/E0020.md

E0021 = 21

Expected an expression for a property value.

Docs: docs/errors/E0021.md

E0022 = 22

Expected an identifier.

Docs: docs/errors/E0022.md

E0023 = 23

Expression nesting depth exceeds the parser limit.

Docs: docs/errors/E0023.md

E0024 = 24

Expected an operand after a unary operator.

Docs: docs/errors/E0024.md

E0025 = 25

Expected NULL after IS (or IS NOT).

Docs: docs/errors/E0025.md

E0026 = 26

Expected a right-hand side operand for a binary expression.

Docs: docs/errors/E0026.md

E0027 = 27

Expected an expression inside parentheses.

Docs: docs/errors/E0027.md

E0028 = 28

Expected ) to close a parenthesised expression.

Docs: docs/errors/E0028.md

E0029 = 29

Expected WITH after STARTS (i.e. STARTS WITH).

Docs: docs/errors/E0029.md

E0030 = 30

Expected WITH after ENDS (i.e. ENDS WITH).

Docs: docs/errors/E0030.md

E0031 = 31

Expected a property key name after ..

Docs: docs/errors/E0031.md

E0032 = 32

Expected an index expression inside […].

Docs: docs/errors/E0032.md

E0033 = 33

Expected ] to close a subscript / index expression.

Docs: docs/errors/E0033.md

E0034 = 34

Expected ) to close a function call argument list.

Docs: docs/errors/E0034.md

E0035 = 35

Expected a function call argument expression.

Docs: docs/errors/E0035.md

E0036 = 36

Expected an expression in a RETURN item.

Docs: docs/errors/E0036.md

E0037 = 37

Expected an identifier after AS (alias).

Docs: docs/errors/E0037.md

E0038 = 38

Expected BY after ORDER (i.e. ORDER BY).

Docs: docs/errors/E0038.md

E0039 = 39

Expected an expression in an ORDER BY item.

Docs: docs/errors/E0039.md

E0040 = 40

Expected an expression after SKIP.

Docs: docs/errors/E0040.md

E0041 = 41

Expected an expression after LIMIT.

Docs: docs/errors/E0041.md

E0042 = 42

Expected MATCH after OPTIONAL.

Docs: docs/errors/E0042.md

E0043 = 43

Expected an expression after WHERE.

Docs: docs/errors/E0043.md

E0044 = 44

Clause keyword encountered that is not yet implemented (deferred construct).

Docs: docs/errors/E0044.md

E0045 = 45

Expected a clause keyword (MATCH, WITH, RETURN, …).

Docs: docs/errors/E0045.md

E0046 = 46

Invalid escape sequence in a string literal.

Docs: docs/errors/E0046.md

E0047 = 47

Expected an expression in a list literal.

Docs: docs/errors/E0047.md

E0048 = 48

Expected ] to close a list literal.

Docs: docs/errors/E0048.md

E0049 = 49

Expected a key in a map literal.

Docs: docs/errors/E0049.md

E0050 = 50

Expected : in a map literal entry.

Docs: docs/errors/E0050.md

E0051 = 51

Expected an expression for a map literal value.

Docs: docs/errors/E0051.md

E0052 = 52

Expected } to close a map literal.

Docs: docs/errors/E0052.md

E0053 = 53

Expected an expression after UNWIND.

Docs: docs/errors/E0053.md

E0054 = 54

Expected AS after an UNWIND expression.

Docs: docs/errors/E0054.md

E0055 = 55

Expected a pattern after CREATE.

Docs: docs/errors/E0055.md

E0056 = 56

Expected a pattern after MERGE.

Docs: docs/errors/E0056.md

E0057 = 57

Expected a SET item (property assignment or label add).

Docs: docs/errors/E0057.md

E0058 = 58

Expected a REMOVE item (property access or label).

Docs: docs/errors/E0058.md

E0059 = 59

Expected an expression after DELETE.

Docs: docs/errors/E0059.md

E0060 = 60

Expected DELETE after DETACH.

Docs: docs/errors/E0060.md

E0061 = 61

Expected CREATE or MATCH after ON in a MERGE action.

Docs: docs/errors/E0061.md

E0062 = 62

Expected ] to close a variable-length hop quantifier.

Docs: docs/errors/E0062.md

E0063 = 63

Expected = after a path binder identifier.

Docs: docs/errors/E0063.md

E0065 = 65

Expected ( after a list-predicate keyword (cy-8x5).

Emitted by the parser when ANY / ALL / NONE / SINGLE is not immediately followed by an opening parenthesis at atom position.

Docs: docs/errors/E0065.md

E0066 = 66

Expected IN between the list-predicate binder and its source expression (cy-8x5).

Docs: docs/errors/E0066.md

E0067 = 67

Expected ) to close a list-predicate expression (cy-8x5).

Docs: docs/errors/E0067.md

E1001 = 1_001

Unresolved variable reference (spec §6.2).

Emitted by cyrs-sema resolve pass when a name that appears in an expression position cannot be found in any enclosing scope.

Docs: docs/errors/E1001.md

E1002 = 1_002

Variable shadows an outer binding (spec §6.2).

Emitted as a warning when SemaOptions::warn_shadowing is set and a new binding introduces a name already visible in an outer scope.

Docs: docs/errors/E1002.md

E2007 = 2_007

Variable used in arithmetic / numeric context but has non-Value kind (Node, Relationship, or Path). Schema-free kind-consistency check (spec §6.3).

Emitted by cyrs-sema kinds pass when a Node/Relationship/Path variable appears as an operand of an arithmetic expression.

Docs: docs/errors/E2007.md

E2008 = 2_008

Variable of incorrect kind used in pattern position (spec §6.3).

E.g., a Value variable where a node-pattern binder is expected, or a Node variable where a path binder is expected.

Emitted by cyrs-sema kinds pass.

Docs: docs/errors/E2008.md

E2009 = 2_009

Arithmetic operand has a non-numeric type (spec §7.4).

Emitted when an operand of +, -, *, /, %, or ^ infers to a type that cannot unify with Num (e.g., a boolean or a string).

Docs: docs/errors/E2009.md

E2010 = 2_010

String-operator operand has a non-string type (spec §7.4).

Emitted when an operand of CONTAINS, STARTS WITH, or ENDS WITH infers to a type other than String or Any.

Docs: docs/errors/E2010.md

E2011 = 2_011

Boolean-operator operand has a non-boolean type (spec §7.4).

Emitted when an operand of AND, OR, XOR, or unary NOT infers to a type other than Bool or Any.

Docs: docs/errors/E2011.md

E2012 = 2_012

IN list element type mismatch (spec §7.4).

Emitted when the left operand of IN infers to a type that cannot unify with the element type of the right-hand list.

Docs: docs/errors/E2012.md

E2013 = 2_013

IN right-hand operand is not a list (spec §7.4).

Emitted when the right-hand side of IN infers to a non-list type (e.g., x IN 42).

Docs: docs/errors/E2013.md

E3001 = 3_001

Unknown node label (spec §7.5).

Emitted by cyrs-sema schema-aware pass when a label referenced in a node pattern is not declared in the schema.

Docs: docs/errors/E3001.md

E3002 = 3_002

Unknown relationship type (spec §7.5).

Emitted by cyrs-sema schema-aware pass when a relationship type referenced in a pattern is not declared in the schema.

Docs: docs/errors/E3002.md

E3003 = 3_003

Unknown property on label or relationship type (spec §7.5).

Emitted when a property key in an inline pattern map is not declared on any of the node’s labels or the relationship’s type.

Docs: docs/errors/E3003.md

E3004 = 3_004

Property type mismatch (spec §7.5).

Emitted when a literal value in an inline property map cannot be stored in the declared property type (e.g., String into an Int slot).

Docs: docs/errors/E3004.md

E3006 = 3_006

Unknown function name (spec §7.5).

Emitted by cyrs-sema schema-aware pass when a function call references a name not present in the SchemaProvider’s catalog.

Docs: docs/errors/E3006.md

E3007 = 3_007

Function or procedure arity mismatch (spec §7.5).

Emitted when a function or procedure call provides the wrong number of arguments compared to the declared signature.

Docs: docs/errors/E3007.md

E3008 = 3_008

Unknown procedure name (spec §7.5).

Emitted by cyrs-sema schema-aware pass when a CALL clause references a procedure not present in the SchemaProvider’s catalog.

Docs: docs/errors/E3008.md

E3010 = 3_010

Schema-file property type is unresolved (spec 0002 §9).

Emitted by cypher schema check when a property or parameter declares an opaque type (e.g. DURATION, POINT) whose v0 structural meaning is deferred. Load succeeds — the type round- trips — but the linter flags it so operators know the type participates as an opaque symbolic value only.

Docs: docs/errors/E3010.md

E3011 = 3_011

Relationship-type endpoint cycles through the same label on both sides (spec 0002 §9).

Emitted by cypher schema check when a rel type declares the same label in both start_labels and end_labels. The spec permits self-loops but the linter surfaces them so operators can confirm they are intentional (e.g. KNOWS: Person → Person is fine; REPORTS_TO: Team → Team may be a modelling slip).

Docs: docs/errors/E3011.md

E4001 = 4_001

Dialect not supported (spec §9.3).

Emitted by cyrs-sema::dialect::reject_neo4j_current when the caller attempts to use the Neo4jCurrent dialect, which is not part of v1 (spec §9.3, §19–§20).

Docs: docs/errors/E4001.md

E4010 = 4_010

label_negation — ! in label expressions; GqlAligned only (spec §9.2).

Docs: docs/errors/E4010.md

E4011 = 4_011

label_union — A|B label-union in patterns; allowed in both v1 dialects (spec §9.2).

Docs: docs/errors/E4011.md

E4012 = 4_012

integer_division — / with integer operands; OpenCypherV9 only (spec §9.2).

Docs: docs/errors/E4012.md

E4013 = 4_013

union_set — plain UNION (set-semantics); allowed in both v1 dialects.

Docs: docs/errors/E4013.md

E4014 = 4_014

call_procedure — CALL proc YIELD …; allowed in both v1 dialects.

Docs: docs/errors/E4014.md

E4015 = 4_015

load_csv — LOAD CSV clause; deferred (spec §9.3).

Docs: docs/errors/E4015.md

E4016 = 4_016

apoc_functions — APOC-prefixed functions; deferred (spec §9.3).

Docs: docs/errors/E4016.md

E4017 = 4_017

exists_subquery — EXISTS { } subquery; deferred (spec §9.3).

Docs: docs/errors/E4017.md

E4018 = 4_018

cypher_prefix — CYPHER n MATCH … header; deferred (spec §9.3).

Docs: docs/errors/E4018.md

E4019 = 4_019

call_in_transactions — CALL { } IN TRANSACTIONS; deferred (spec §9.3).

Docs: docs/errors/E4019.md

E5003 = 5_003

Type mismatch in unification — two incompatible concrete types cannot be unified (spec §7.2, §7.3).

Produced by cyrs-sema::unify::TypeMismatch::into_diagnostic. Call sites supply the source range; code is always E5003.

Docs: docs/errors/E5003.md

E5010 = 5_010

Indexing or slicing applied to a non-list expression (spec §7.4 / §19 row “List indexing / slicing”).

Emitted by cyrs-sema::kinds when xs[0] / xs[i..j] is applied to a target whose inferred type is not a list (and not Any / Unknown). v1 scope is list-only; string indexing is deferred to a follow-up bead and is rejected by this code until then.

Docs: docs/errors/E5010.md

E5011 = 5_011

List-predicate iterable is not a list (spec §7.4 / §19 row “List predicates”).

Emitted by cyrs-sema::kinds when the source expression of ANY / ALL / NONE / SINGLE (x IN xs [WHERE p]) is structurally non-list: a scalar literal, a Node / Relationship / Path variable, a map literal, or a pattern predicate. Value variables and call results are accepted because they may hold a list at runtime — schema-aware refinement is the follow-up’s job.

Docs: docs/errors/E5011.md

E5012 = 5_012

Built-in function argument kind mismatch (spec §7.4 / §10.2).

Emitted by cyrs-sema::infer when a call to a registered builtin passes an argument whose inferred type is incompatible with the parameter’s declared ArgShape. The canonical case is id(42) — the id builtin’s parameter is GraphEntity (Node | Relationship | Path), so a scalar literal is rejected.

Docs: docs/errors/E5012.md

E0064 = 64

Unclosed [ in a list-indexing / slicing expression (spec §4.3).

Emitted by the parser’s index_or_slice_postfix recovery path when no matching ] follows the inner expression / slice bounds. Distinct from E0033 (SUBSCRIPT_EXPR legacy path) so tooling can tell the two apart; the typed cy-7s6.1 grammar path uses this code exclusively.

Docs: docs/errors/E0064.md

E0068 = 68

Expected IN in list comprehension (spec §19 row “List comprehensions”).

Emitted by the parser’s list-comprehension production (cy-5gh) when the iteration-variable identifier is not followed by the IN keyword.

Docs: docs/errors/E0068.md

E0069 = 69

Expected | or ] in list comprehension (spec §19 row “List comprehensions”).

Emitted by the parser’s list-comprehension production (cy-5gh) when neither a projection pipe | nor the closing bracket ] follows the optional WHERE predicate / source expression.

Docs: docs/errors/E0069.md

E0070 = 70

Expected THEN in a CASE arm (spec §19 row “CASE”).

Emitted by the parser’s CASE production (cy-41u) when a WHEN <value> clause is not followed by the mandatory THEN keyword.

Docs: docs/errors/E0070.md

E0071 = 71

Expected END to close a CASE expression (spec §19 row “CASE”).

Emitted by the parser’s CASE production (cy-41u) when the terminating END keyword is missing after the final arm / optional ELSE branch.

Docs: docs/errors/E0071.md

E0072 = 72

Expected ) to close an EXISTS(<pattern>) pattern predicate (spec §6.1 / §19 row “Pattern predicates in expressions”).

Emitted by the parser’s exists_pattern_predicate production (cy-lve) when the closing paren of the wrapping EXISTS ( <pattern> ) form is missing. The bare-pattern form WHERE (a)-->(b) (cy-7lf) does not emit this code — the inner ) belongs to the pattern’s node-pattern production.

Docs: docs/errors/E0072.md

E0078 = 78

Expected } to close a map projection (spec §6.1 / §19 row “Map projection”; cy-01q).

Emitted by the parser’s map_projection_postfix production when the closing } of n { ... } is missing. Distinct from E0052 (map literal }) so tools can distinguish the two recovery paths.

E0079 = 79

Expected property name or * after . in a map projection item (cy-01q). Inside n { ... }, a . opens either .NAME (property selector) or .* (all-properties spread); anything else is an error.

E0080 = 80

Expected : in a map projection literal item (cy-01q). Distinct from E0050 (map literal :).

E0081 = 81

Expected expression for map projection literal value (cy-01q).

E0082 = 82

Expected an item in map projection: .name, key: expr, .*, or * (cy-01q).

W6001 = 6_001

Dead WITH — projection with no downstream reader.

W6002 = 6_002

Identifier collides with a reserved keyword; needs backtick quoting.

W6003 = 6_003

Duplicate key in map literal — last write wins.

W6004 = 6_004

Variable bound but never read.

W6005 = 6_005

Redundant OPTIONAL MATCH — no bound variables escape the clause.

W6006 = 6_006

Pattern has no label or type restriction — will scan broadly.

W6007 = 6_007

Inconsistent keyword casing inside one query.

W6010 = 6_010

Unreachable label — schema-file lint (spec 0002 §9).

Emitted by cypher schema check when a label is declared but not referenced by any relationship type’s start_labels or end_labels. Not fatal: isolated labels are permitted — they are legitimate for nodes created without relationships — but the lint surfaces them so operators catch typos in rel-type endpoint lists.

Docs: docs/errors/W6010.md

W7001 = 7_001

Cartesian product between disconnected MATCH components.

W7002 = 7_002

Expensive function call inside a row-wise filter.

W7003 = 7_003

Variable-length path without an upper bound.

W7004 = 7_004

Property access on an unindexed label in a selective filter.

N8001 = 8_001

Informational — pattern normalised to canonical direction.

N8002 = 8_002

Informational — inferred type of an expression.

N8003 = 8_003

Informational — variable dropped from scope by this projection.

Implementations

impl DiagCode

pub const ALL: &'static [DiagCode]

Canonical enumeration of every registered diagnostic code, in numeric order. This is THE registry used by tests/registry.rs to enforce spec §10.2 invariants — every variant added to DiagCode must also be appended here.

pub const fn as_str(self) -> &'static str

Render as the stable wire-format string: E0001, W6001, N8001.

pub const fn severity_char(self) -> char

Severity letter derived from the numeric range (spec §10.2).

0..=5999 → 'E', 6000..=7999 → 'W', 8000..=8999 → 'N'. Panics if the discriminant falls outside any registered range — the ALL invariants enforced by tests/registry.rs make this unreachable at runtime.

pub fn try_from_u16(numeric: u16) -> Option<DiagCode>

Recover the typed DiagCode for a numeric discriminant.

Returns None for any value not registered in DiagCode::ALL (including retired codes). Embedders that map cyrs errors to their own typed errors should prefer this over matching on raw u16 values from cyrs_syntax::SyntaxError::code — names survive renumbering, magic numbers do not (cy-emb3).

Examples

use cyrs_diag::DiagCode;
assert_eq!(DiagCode::try_from_u16(3), Some(DiagCode::E0003));
assert_eq!(DiagCode::try_from_u16(6001), Some(DiagCode::W6001));
assert_eq!(DiagCode::try_from_u16(9999), None);

pub fn from_u16_or_e0001(numeric: u16) -> DiagCode

Recover the typed DiagCode for a numeric discriminant, or fall back to DiagCode::E0001 for unknown values.

Convenience for diagnostic-rendering paths that must always produce a code (e.g. from impl on cyrs_syntax::SyntaxError). Prefer try_from_u16 when the embedder needs to distinguish “unknown code” from “registered E0001” (cy-emb3).

Trait Implementations

impl Clone for DiagCode

fn clone(&self) -> DiagCode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DiagCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Display for DiagCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl From<&SyntaxError> for DiagCode

Lift a cyrs_syntax::SyntaxError to its typed DiagCode.

cyrs-syntax carries diagnostic codes as u16 to avoid a reverse dependency on cyrs-diag (spec §3 crate graph). Embedders that already depend on cyrs-diag for rendering can recover the typed enum without re-implementing the lookup table:

use cyrs_diag::DiagCode;
use cyrs_syntax::parse;

let parse = parse("MATCH");
// First syntax error from a deliberately broken query.
let err = parse.errors().first().expect("at least one error");
let code: DiagCode = DiagCode::from(err);
// Match on a stable name — survives any future renumbering.
match code {
    DiagCode::E0001 | DiagCode::E0007 | DiagCode::E0045 => { /* generic / clause-level */ }
    _ => { /* other syntax codes */ }
}

Unknown numeric codes fall back to DiagCode::E0001 — see DiagCode::try_from_u16 for a fallible alternative (cy-emb3).

fn from(err: &SyntaxError) -> DiagCode

Converts to this type from the input type.

impl Hash for DiagCode

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for DiagCode

fn cmp(&self, other: &DiagCode) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for DiagCode

fn eq(&self, other: &DiagCode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for DiagCode

fn partial_cmp(&self, other: &DiagCode) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for DiagCode

impl Eq for DiagCode

impl StructuralPartialEq for DiagCode