treesitter

package
v3.25.0 Latest Latest
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 Go to latest Published: Oct 8, 2026 License: MIT Imports: 8 Imported by: 0

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Types

type Engine 

type Engine struct {
	// contains filtered or unexported fields
}

Engine parses a source file once and allows repeated query execution against it.

func New 

func New(ctx context.Context, lang Lang, src []byte) (*Engine, error)

New parses src using the given language and returns an Engine ready for queries. The parse is done once here; subsequent Query calls reuse the tree.

func (*Engine) Query 

func (e *Engine) Query(pattern string) ([]Match, error)

Query compiles pattern and executes it against the parsed tree, returning all matches with named captures resolved to their text content. Predicate filters (#match?, #eq?, etc.) declared in the pattern are applied.

type Lang 

type Lang int

Lang identifies a source language for parsing. 

const (
	LangGo Lang = iota
	LangRuby
	LangPython
	LangJavaScript
	// LangTypeScript covers both .ts and .tsx: it always parses with the
	// TSX grammar, a strict syntactic superset of plain TypeScript, so one
	// Lang value suffices for both.
	LangTypeScript
)

func ParseLang 

func ParseLang(s string) (Lang, bool)

ParseLang converts a string like "go" or "ruby" to a Lang constant.

type Match 

type Match struct {
	// Captures maps capture name (without the @) to the matched node's text content.
	Captures map[string]string
}

Match is one tree-sitter query match with its named text captures.

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