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(ns cljcc.cljcc
(:require
[clojure.tools.cli :refer [parse-opts]]
[clojure.string :as string]
[cljcc.util :refer [exit]]
[cljcc.driver :as d])
(:gen-class))
(set! *warn-on-reflection* true)
(defn usage [options-summary]
(->>
["Usage: ./cljcc path/to/file.c [options]"
""
"Options:"
options-summary]
(string/join \newline)))
(def cli-options
[[nil "--lex" "Runs lexer. Does not emit any files."]
[nil "--parse" "Runs parser. Does not emit any files."]
[nil "--codegen" "Runs compiler. Does not emit any files."]
[nil "--tacky" "Runs tacky generation. Does not emit any files."]
["-h" "--help"]])
(defn validate-args [args]
(let [{:keys [options arguments summary]} (parse-opts args cli-options)]
(cond
(:help options) {:exit-message (usage summary) :ok? true}
(= 1 (count arguments)) {:file-path (first arguments)
:options options}
:else {:exit-message (usage summary)})))
(defn -main
"Main entrypoint for cljcc compiler."
[& args]
(let [{:keys [file-path exit-message ok? options]} (validate-args args)]
(if exit-message
(exit (if ok? 0 1) exit-message)
(try
(d/run file-path options)
(exit 0 "Successfully executed.")
(catch Exception e
(exit 1 (ex-message e) e))))))
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