Bump github.com/odvcencio/gotreesitter from 0.20.7 to 0.21.0

[dependabot]

Bumps github.com/odvcencio/gotreesitter from 0.20.7 to 0.21.0.

Release notes

Sourced from github.com/odvcencio/gotreesitter's releases.

v0.21.0 — the engine release

The engine release. The generalized GLR parser core — a C-faithful error recovery engine plus a GSS-forest fast path — replaces the v0.20.x per-language recovery approximations as the default runtime. Error recovery for 123 elected grammars now reproduces C tree-sitter's decisions (strategy-1 election order, per-stack-version error-mode lexing identity, error-cost model, and condense scheduling were each verified decision-for-decision against an instrumented tree-sitter v0.25.0 oracle). The campaign branch's full correctness backlog — 42 known failing tests at its peak — is zero in this release, and the root test suite dropped from ~340s to ~62s along the way.

Changed

• Error-tree shapes for elected languages now match C tree-sitter in many previously divergent constructs: PHP static named functions, the authzed recovery family, Angular non-null assertions, FIDL versioned layout modifiers, Julia trailing-comma assignment tuples, doxygen comment blocks, and Go range-with-function-literal bodies, among others. Downstreams that pinned the old (non-C) error shapes for these languages will see diffs on upgrade — the new shapes are the C-oracle-verified ones.
• Go grammar: real automatic-semicolon insertion via an external scanner (_automatic_semicolon), replacing the grammar-level approximation. Fixes the byte-strict ASI parity gap; spurious-HasError files on a large real repo walk dropped 436 → 17.
• The strategy-1 recovery election was rewritten to C's order and cost basis (merged-version m0 basis, finished-tree-first cost checks, missing-token versions created before the recover pass, shiftable originals preserved as their own paths, record-time dedup), and ordinary reduces no longer dissolve extra ERROR carriers (C keeps every popped subtree).
• Recovery-time lookahead identity: the engine now lexes error-mode lookaheads per stack version like C (LexModes[0] at ERROR_STATE), including an engine-side error-mode relex for custom token sources, with the capability forwarded through included-range wrappers.

Fixed

• Conflict-policy metadata inference no longer vetoes hand-written repeat-boundary conflict resolvers for embedded languages. The veto — intended only for grammargen-generated grammars — silently disabled the C#, Java, C, Rust, TypeScript, PHP, Python (and more) resolvers; C# designer-style files forked ~32 GLR stacks per statement and exhausted the arena (2064 stacks); they now parse with 1 stack well under the 500ms test budget.
• Forest engine: hidden-symbol dedup starvation and a cap-eviction tie livelock no longer force dead-end declines on valid input (bash/CMake/JSON repeat-heavy shapes; python module_repeat1 worklist blowup); the EOF-recovery competition probe no longer declines ordinary clean input; and Parser.SetTimeoutMicros is now enforced inside the forest path

... (truncated)

Changelog

Sourced from github.com/odvcencio/gotreesitter's changelog.

[0.21.0] - 2026-07-06

The engine release. The generalized GLR parser core — a C-faithful error recovery engine plus a GSS-forest fast path — replaces the v0.20.x per-language recovery approximations as the default runtime. Error recovery for 123 elected grammars now reproduces C tree-sitter's decisions (strategy-1 election order, per-stack-version error-mode lexing identity, error-cost model, and condense scheduling were each verified decision-for-decision against an instrumented tree-sitter v0.25.0 oracle). The campaign branch's full correctness backlog — 42 known failing tests at its peak — is zero in this release, and the root test suite dropped from ~340s to ~62s along the way.

Changed

• Error-tree shapes for elected languages now match C tree-sitter in many previously divergent constructs: PHP static named functions, the authzed recovery family, Angular non-null assertions, FIDL versioned layout modifiers, Julia trailing-comma assignment tuples, doxygen comment blocks, and Go range-with-function-literal bodies, among others. Downstreams that pinned the old (non-C) error shapes for these languages will see diffs on upgrade — the new shapes are the C-oracle-verified ones.
• Go grammar: real automatic-semicolon insertion via an external scanner (_automatic_semicolon), replacing the grammar-level approximation. Fixes the byte-strict ASI parity gap; spurious-HasError files on a large real repo walk dropped 436 → 17.
• The strategy-1 recovery election was rewritten to C's order and cost basis (merged-version m0 basis, finished-tree-first cost checks, missing-token versions created before the recover pass, shiftable originals preserved as their own paths, record-time dedup), and ordinary reduces no longer dissolve extra ERROR carriers (C keeps every popped subtree).
• Recovery-time lookahead identity: the engine now lexes error-mode lookaheads per stack version like C (LexModes[0] at ERROR_STATE), including an engine-side error-mode relex for custom token sources, with the capability forwarded through included-range wrappers.

Fixed

• Conflict-policy metadata inference no longer vetoes hand-written repeat-boundary conflict resolvers for embedded languages. The veto — intended only for grammargen-generated grammars — silently disabled the C#, Java, C, Rust, TypeScript, PHP, Python (and more) resolvers; C# designer-style files forked ~32 GLR stacks per statement and exhausted the arena (2064 stacks); they now parse with 1 stack well under the 500ms test budget.
• Forest engine: hidden-symbol dedup starvation and a cap-eviction tie livelock no longer force dead-end declines on valid input (bash/CMake/JSON repeat-heavy shapes; python module_repeat1 worklist blowup); the EOF-recovery competition probe no longer declines ordinary clean input; and Parser.SetTimeoutMicros is now enforced inside the forest path

... (truncated)

Commits

• d7c4d04 release(docs): Release 0.21.0: GLR engine parity, memory savings
• 0db569a Merge pull request #133 from odvcencio/codex/glr-parity-buckets-20260626
• 3caaaf5 update(ci): update performance bench contract for v0.21.0 engine
• 1e2e96f update(ci, tests): Separate grammargen tests in CI and align test expectations
• e755f06 optimize(parser): optimize token source allocation and action lookup
• c24b91b ci: ci: adjust timeouts and skip wall-clock tests under -race
• 05f9dce ci: trigger non-draft pipeline (full -race suite) post-undraft
• da9f19e add(tests): add clean-regression pins and skip boundedness under -race
• 81af9e4 optimize(glr): optimize GLR parser with subtree and forest caching
• 3dbba72 fix(parser): Align shift-gap, condense, and error cost handling
• Additional commits viewable in compare view

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