goyacc を Homebrew でインストール

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• goyacc

プロジェクトの歴史

The modernc.org implementation begins in public history in November 2014. Its source comments state that it uses portions of code previously published in the Go tool `yacc` program, while the Go tools documentation describes that upstream goyacc as largely transliterated from Inferno's Limbo version, itself largely transliterated from the Plan 9 C version.

The project moved its import path and repository root to modernc.org in 2018, and pkg.go.dev records `gitlab.com/cznic/goyacc` as the repository for the modernc.org module.

採用の歴史

goyacc is part of a long Unix parser-generator tradition adapted for Go. The Go project used goyacc as an example in the Go 1.4 `go generate` announcement, showing how generated parsers fit into Go package maintenance even though generation is run explicitly by package authors.

使われ方

The command accepts a yacc input file or standard input and writes a Go parser, defaulting to `y.go`, with options for the symbol prefix, parser report output, follow sets, conflict explanations, and generated error examples. Generated parsers use a Go lexer interface instead of C yacc globals.

パッケージ好きにとっての重要性

For package maintainers, goyacc is a compact bridge between old compiler-construction workflows and Go modules: grammars can live beside Go source, generation can be driven by `go generate`, and the installed binary is small enough to package directly in Homebrew.

タイムライン

• 2014: modernc.org/goyacc public history begins and records the initial release work.
• 2014: Go 1.4 introduces `go generate`, with goyacc used as a code-generation example.
• 2015: The modernc.org command adds generated error-message support via examples.
• 2017: The command adds follow-set reporting.
• 2018: The project moves its repository root to modernc.org and tags v1.0.0.
• 2023: v1.0.3 tag updates dependencies.

Related projects

• golang.org/x/tools/cmd/goyacc is the Go tools implementation in the same yacc-for-Go lineage.
• Plan 9 yacc and Inferno yacc are earlier implementations named in the Go tools documentation.
• modernc.org/y and modernc.org/parser/yacc are related modernc parser packages used by the command.

ソース

• https://gitlab.com/cznic/goyacc
• https://go.dev/blog/generate
• https://pkg.go.dev/golang.org/x/tools/cmd/goyacc
• https://pkg.go.dev/modernc.org/goyacc