editor-core-treesitter

editor-core-treesitter provides an offline, incremental Tree-sitter pipeline for editor-core:

• syntax highlighting → ProcessingEdit::ReplaceStyleLayer
• folding regions → ProcessingEdit::ReplaceFoldingRegions

The public output is expressed in editor-core's derived-state model, so hosts can apply results through EditorStateManager::apply_processing_edits (or apply_processor).

Quick start

use editor_core::EditorStateManager;
use editor_core_treesitter::{TreeSitterProcessor, TreeSitterProcessorConfig};
use tree_sitter_rust::LANGUAGE;

let mut state = EditorStateManager::new("fn main() {}\n", 80);

let config = TreeSitterProcessorConfig::new(LANGUAGE.into(), tree_sitter_rust::HIGHLIGHTS_QUERY)
    .with_default_rust_folds()
    .with_simple_capture_styles([
        ("comment", 1),
        ("string", 2),
        ("type", 3),
        ("function", 4),
    ]);

let mut processor = TreeSitterProcessor::new(config).unwrap();
state.apply_processor(&mut processor).unwrap();

Notes

• Incrementality is driven by EditorStateManager::last_text_delta(); if no delta is available (or it doesn't match the processor's internal text), the processor falls back to a full re-parse.
• Queries are Tree-sitter queries (.scm) and capture names are mapped to StyleId by the host.