## 0.15.0 (2021-08-11)

### Breaking changes

The module name has changed from `lezer-tree` to `@lezer/common`.

`TreeBuffer`s no longer accept a node type.

`Tree.balance` no longer takes a buffer size as argument.

`NodeProp.string`, `NodeProp.number`, and `NodeProp.flag` have been removed (the thing they provided is trivial to write by hand).

A node's context hash is now stored in the `NodeProp.contextHash` prop.

Reused nodes passed to `Tree.build` must now be `Tree` instances (not tree buffers).

`Parser` is now an abstract class that all parser implementations must extend, implementing the `createParse` method.

The `PartialParse` interface changed to make multi-pass parsers possible.

`Parser.startParse` now takes different arguments `(input, fragments, ranges)` instead of `(input, startPos, context)`.

The `Input` interface has changed (to become chunk-based and more low-level). A single `Input` object is now shared between outer and inner parses.

`stringInput` is no longer exported (`Parser` methods will automatically wrap strings when appropriate).

### Bug fixes

Fix a bug in `TreeFragment.applyChanges` that prevented some valid reuse of syntax nodes.

Fix a bug where reused nodes could incorrectly be dropped by `Tree.build`.

### New features

Node props can now be per-node, in which case they are stored on `Tree` instances rather than `NodeType`s.

Tree nodes can now be replaced with other trees through `NodeProp.mountedTree`.

`Tree.resolveInner` can now be used to resolve into overlay trees.

`SyntaxNode` objects now have a `toTree` method to convert them to a stand-alone tree.

`Tree.balance` now accepts a helper function to create the inner nodes.

Tree cursors' `next`/`prev` methods now take an `enter` argument to control whether they enter the current node.

`SyntaxNode` and `TreeCursor` now have an `enter` method to directly enter the child at the given position (if any).

`Tree.iterate` callbacks now get an extra argument that allows them to create a `SyntaxNode` for the current node.

The parsing interface now supports parsing specific, non-contiguous ranges of the input in a single parse.

The module now exports a `parseMixed` helper function for creating mixed-language parsers.

## ,### Breaking changes

The module name has changed from `lezer-tree` to `@lezer/common`.

`TreeBuffer`s no longer accept a node type.

`Tree.balance` no longer takes a buffer size as argument.

`NodeProp.string`, `NodeProp.number`, and `NodeProp.flag` have been removed (the thing they provided is trivial to write by hand).

A node's context hash is now stored in the `NodeProp.contextHash` prop.

Reused nodes passed to `Tree.build` must now be `Tree` instances (not tree buffers).

`Parser` is now an abstract class that all parser implementations must extend, implementing the `createParse` method.

The `PartialParse` interface changed to make multi-pass parsers possible.

`Parser.startParse` now takes different arguments `(input, fragments, ranges)` instead of `(input, startPos, context)`.

The `Input` interface has changed (to become chunk-based and more low-level). A single `Input` object is now shared between outer and inner parses.

`stringInput` is no longer exported (`Parser` methods will automatically wrap strings when appropriate).

### Bug fixes

Fix a bug in `TreeFragment.applyChanges` that prevented some valid reuse of syntax nodes.

Fix a bug where reused nodes could incorrectly be dropped by `Tree.build`.

### New features

Node props can now be per-node, in which case they are stored on `Tree` instances rather than `NodeType`s.

Tree nodes can now be replaced with other trees through `NodeProp.mountedTree`.

`Tree.resolveInner` can now be used to resolve into overlay trees.

`SyntaxNode` objects now have a `toTree` method to convert them to a stand-alone tree.

`Tree.balance` now accepts a helper function to create the inner nodes.

Tree cursors' `next`/`prev` methods now take an `enter` argument to control whether they enter the current node.

`SyntaxNode` and `TreeCursor` now have an `enter` method to directly enter the child at the given position (if any).

`Tree.iterate` callbacks now get an extra argument that allows them to create a `SyntaxNode` for the current node.

The parsing interface now supports parsing specific, non-contiguous ranges of the input in a single parse.

The module now exports a `parseMixed` helper function for creating mixed-language parsers.