{"adoption": {"forks": 572, "observed_at": "2026-08-28T04:08:33.497803+00:00", "stars": 4039}, "canonical_url": "https://ross.abutalabs.com/products/westes-flex", "card": {"archived": false, "artifact_type": "cli-tool", "description": "The Fast Lexical Analyzer - scanner generator for lexing in C and C++", "domain": ["parsers", "developer-tools", "programming-languages"], "enriched": true, "function": ["parser", "compiler", "developer-tools"], "health_score": 77, "homepage": null, "language": "C", "license": "NOASSERTION", "license_family": "other", "maturity": "stable", "member_repos": ["westes/flex"], "name": "westes/flex", "platform": ["windows", "cross-platform", "cli"], "pushed_at": "2026-08-03T14:35:20+00:00", "repo": "westes/flex", "stars": 4039, "tags": ["lexer-generator", "scanner", "lex", "c", "c++", "regex", "linux", "macos"], "topics": ["flex", "c", "lexer-generator", "lexer"], "urls": [], "use_cases": ["generate a lexer for a programming language in C", "tokenize text with regular expression patterns", "build a scanner for a compiler or interpreter", "replace hand-written string parsing with generated lexing code", "port legacy lex scanner files to modern toolchains"], "what_it_is": "flex is the classic fast lexical analyzer generator that produces C/C++ scanner code from regular-expression pattern specifications. It is the standard successor to lex, widely used in compilers, interpreters, and text-processing tools.", "when_to_avoid": ["you need a lexer for languages other than C/C++ (consider alternatives like re2c, ANTLR, or language-native lexer libraries)", "you need full parser generation, not just lexing (pair with bison or use a parser generator)", "you want a modern regex engine embedded at runtime rather than generated code"], "when_to_choose": ["you need a fast, battle-tested lexer generator for C or C++", "you want POSIX lex compatibility", "you are building a compiler front end and need tokenization"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/westes-flex", "repo": "westes/flex", "role": "main", "score": 66}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:08:33.497803+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T18:23:46.570348+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "c3e61923cd607588f99aa909fbc4f40482ebf17aee7eff961a5ac51b8bdb18f7", "fetched_at": "2026-08-28T04:08:33.497803+00:00", "kind": "readme", "missing": false, "url": "https://github.com/westes/flex"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 95, "longevity": 100, "rhythm": 8}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 4670, "days_push": 30, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 66, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}