Class PreferSenderFunction

A detector that finds context().sender calls that could be replaced with more gas-effective sender() call.

Why is it bad?

You can obtain the address of the message sender using either the Context struct or the sender function. If you only need the address and no additional context on the incoming message , you should prefer less gas-expensive sender().

See: https://docs.tact-lang.org/book/gas-best-practices/#use-sender-over-contextsender

Example

let ctx = context(); // Bad: only .sender is accessed
message(MessageParameters{
  to: ctx.sender,
  value: ton("0.05"),
});

Use instead:

message(MessageParameters{
  to: sender(),
  value: ton("0.05"),
});

Hierarchy (view full)

Constructors

constructor

Properties

category ctx severity

Accessors

id kind shareImportedWarnings usesSouffle

Methods

check getCategory getSeverity makeWarning skipUnused

Constructors

constructor

Properties

category

category: Category = Category.OPTIMIZATION

Readonlyctx

ctx: MistiContext

severity

severity: Severity = Severity.LOW

Accessors

id

  • get id(): string

  • Gets the short identifier of the detector, used in analyzer warnings.

    Returns string

    The unique identifier of the detector.

kind

shareImportedWarnings

  • get shareImportedWarnings(): WarningsBehavior

  • Defines the behavior of warnings generated by this detector when working with multiple projects within a single Tact configuration.

    Here are the available options:

    1. "union" Leave this value if you don't care about warnings generated in other projects.
    2. "intersect" If the warning is generated for some source location of the imported file, it should be generated by each of the projects. Example: Constants from an imported file should not be reported iff they are unused in all the projects, so you need "intersect".

    Returns WarningsBehavior

usesSouffle

  • get usesSouffle(): boolean

  • Checks whether this detector needs the Soufflé binary to be executed.

    Returns boolean

Methods

check

getCategory

getSeverity

ProtectedmakeWarning

ProtectedskipUnused

Settings

Member Visibility

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Why is it bad?Example
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