Pure Clojure YAML 1.2 reference parser, packaged for Maven/Clojars as:
org.yamlstar/yaml-parser {:mvn/version "0.2.5"}Leiningen:
[org.yamlstar/yaml-parser "0.2.5"](require '[yaml-parser.core :as yaml-parser])
(yaml-parser/parse "name: YAML\nitems: [1, 2]\n")The parser returns YAML event maps such as stream_start, document_start,
mapping_start, scalar, and stream_end.
The grammar is generated directly from the machine-readable YAML 1.2 spec
and keeps its ordered-choice structure for spec parity.
The engine makes that fast with packrat memoization of the flow-context
rules, so the backtracking that is inherent to the spec grammar costs a
table lookup instead of a re-parse.
Set YAML_PARSER_NO_MEMO=1 to disable memoization (useful for A/B
verification that event streams are identical).
bench/run-bench times the parser over a small synthetic corpus.
make deps
make grammar
make test
make jar
VERSION=0.2.5 make deployThe Makefile uses https://github.com/makeplus/makes to install local bb,
clojure, lein, maven, and perl tools under .cache/local.
make test runs both focused API tests and the upstream yaml-test-suite
TAP runner. make deploy publishes to Clojars through deps-deploy; make deploy-lein
uses Leiningen.