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#
Level

pub(all) enum Level {
  Hidden
  Displayed
  ErrorLevel
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

What to do with a warning when it is reported.

#
Policy

source

pub(all) struct Policy {
  level : (Warning) -> Level
}

A mapping from each warning to its level.

A function rather than a table, so set returns an updated closure and later assignments naturally override earlier ones.

#
Policy::resolve

source

fn Policy::resolve(self : Policy, w : Warning) -> Level

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Policy::set

source

fn Policy::set(self : Policy, target : String, level : Level) -> Result[Policy, String]

policy updated so target -- a warning name, a group, or all -- has level. Later calls override earlier ones.

#
Warning

source

pub(all) enum Warning {
  UnusedLocal
  UnusedField
  UnusedImport
  UnusedLabel
  UnnecessaryMut
  ShiftOverflow
  ConstantTrap
  TautologicalComparison
  ConstantCondition
  UnusedResult
  DeadCode
  CastAlwaysFails
  EagerSelect
  Precedence
  RedundantOperation
  TruncatedCoverage
  NamingConflict
  ReservedWordRename
  GeneratedName
  CompoundAssignment
  FieldPunning
  RedundantAnnotation
  ConfusableUnicode
} derive(Eq, @moonbitlang/core/debug.Debug
Debug)

A named warning.

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Warning::description

source

fn Warning::description(self : Warning) -> String

A one-line description, for help text.

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Warning::is_unnecessary

source

fn Warning::is_unnecessary(self : Warning) -> Bool

Whether this flags code removable with no change in behaviour.

An editor renders such a diagnostic faded -- LSP's DiagnosticTag.Unnecessary. Kept beside the definitions so every consumer classifies from one source.

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Warning::name

source

fn Warning::name(self : Warning) -> String

The stable, hyphenated name.

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all

source

let all : Array[Warning]

Every named warning.

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default_policy

source

let default_policy : Policy

The level each warning has when nothing has configured it.

The from-wasm renaming warnings are noisy round-trip notices, and redundant-operation and the suggestion group are optimisation and style hints common in generated code -- all hidden unless -W asks for them. Everything else is shown.

#
groups

source

fn groups() -> Array[String]

The group names, for help text. Excludes the special all.

#
parse_spec

source

fn parse_spec(s : String) -> Result[(String, Level), String]

Parse a -W argument, NAME=LEVEL.

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#Level

#Policy

#Policy::resolve

#Policy::set

#Warning

#Warning::description

#Warning::is_unnecessary

#Warning::name

#all

#default_policy

#groups

#parse_spec

Source Files

#
Level

#
Policy

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Policy::resolve

#
Policy::set

#
Warning

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Warning::description

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Warning::is_unnecessary

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Warning::name

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all

#
default_policy

#
groups

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parse_spec