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CHANGELOG.md

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Asteracea Changelog

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TODO: Date

  • Breaking:

    • Increased minimum supported Rust version from 1.45.0 to 1.58.0

      since asteracea::error uses std::panic::panic_any(…), and for format string interpolation, and to show better event binding validation errors using const panics.

    • Removed "rhizome" features (always enabled now)
    • Removed "styles" and "topiary" features. CSS scoping will be enabled through more general means.
    • Reworked generated component interface
    • Upgraded lignin and lignin-schema dependencies to 0.0.3 each
    • Removed all type-level (static) storage declarations. This reduces complexity a lot. Use plain Rust static items and, where needed, new with { …; } blocks and/or with { …; } <…> expressions instead.
    • Reorganised reexported dependencies and made some of them private
    • Upgraded lignin dependency from 0.0.3 to 0.0.5

      to support fallible rendering.

    • Generated .render(…) methods are now fallible, returning Result<_, Escalation>.
    • The "backtrace" feature was replaced by "tracing", which enables tracing compatibility.
    • Changed bump_format! shorthand syntax.:
      !"format string", !"format_string"(args) and !(args) are all valid now, though in the last case the format string is implicitly "{}".

  • Features:

    • You can now prefix constructor arguments with an explicit visibility (priv, pub, pub(restriction)) to capture them as component instance fields.

    • bump resolution is now more reliable in cases where the macro input is constructed in multiple macro contexts.

    • Allow restating element names when closing them (e.g. /div>)

    • Added support for unvalidated (custom) HTML element names: <"custom-element">

    • HTML comments with <!-- "comment text" -->

    • Custom (Asteracea component) child elements:

      <*Name
  *new_arg = {}
  .render_arg = {}
>

    • Child component instancing:

      <*Name priv name> // Alternatively: `pub`, `pub(…)`
<*{self.name_pinned()}> // Without `*new_arg`s!

    • Optional arguments: pattern?: Type

    • Default parameters: pattern: Type = default

    • Conditional attributes: ."attribute-name"? = {Option<&'bump str>}

    • Conditional parameters (like conditional attributes)

    • Boolean attributes: ."attribute-name"? = {bool}

    • new with { …; } blocks to insert statements into the constructor

    • with { …; } <…> expressions to insert statements into the .render method

    • Conditional content via if {…} <…>, if …… else <…> and match <…> [ … ]

    • Box expressions: box ⟦priv …⟦: ⟦struct⟧ … ⟦where …;⟧⟧⟧ <…>

  • Revisions:

    • Improved Counter example in the README.

0.0.2

2020-10-08

  • Features:

    • Added shorthand formatting syntax:

      Use !{value} to format plainly using Display.
      Use e.g. !"{} {}"{value1, value2} to specify a custom format string.

0.0.1

2020-10-05

Initial unstable release