application/octet-stream
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3.33 KB
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79 lines
[do [def help [let* [do [def iter [λ* [l]
""
[cond [[nil? l] #t]
[#t [display [describe [car l]]] [newline] [iter [cdr l]]]]]]
[λ* [i]
"Describe 10 functions at offset 1"
[do [def off [* [int i] 10]]
[iter [map cat [symbol-table off 10]]]
[display [cat "Help page " [int i] " of " [/ [symbol-count] 10]]]
[newline]
#t]]]]]
[def repl-prompt [let* [do [def repl-count -1]
[λ* [i]
"Display the REPL prompt"
[do [set! repl-count [++ repl-count]]
[display [cat "[" repl-count "]" [ansi-fg 1] "λ" [ansi-fg 12] ">" [ansi-reset] " "]]]]]]]
[def file/compile [λ* [path no-write]
"Compile a Nujel source file into optimized object code"
[do [def source [read [file/read path]]]
[def object-code [compile [cons 'do source] source]]
[unless no-write
[file/write [cat [path/without-extension path] ".no"] [str/write object-code]]]
object-code]]]
[def file/eval [λ* [path]
"Evaluate a Nujel source file in the current context"
[do [def source [cons 'do [read [file/read path]]]]
[eval source]]]]
[def eval/forked [λ* [nujel-binary raw-expr]
"Evaluate @EXPR in a separate process running NUJEL-BINARY"
[do [def expr [cat "[print [str/write " [str/write raw-expr]]]
[def tmp-path [file/temp expr]]
[def command [cat nujel-binary " " tmp-path]]
[def res [popen command]]
[file/remove tmp-path]
[cons [car res] [cdr res]]]]]
[def test-context "Nujel Standalone"]][do [def display/error [let* [do [def wrap [λ* [i text]
""
[cond [[eq? i 0] [ansi-red text]]
[[eq? i 1] text]
[[eq? i 2] [ansi-yellow text]]
[#t text]]]]
[def iter [λ* [error i]
""
[if error
[cons [wrap i [string [car error]]] [iter [cdr error] [++ i]]]
[cons "" #nil]]]]
[λ* [error]
"Display ERROR in a nice, human readable way"
[display [join [iter error 0] "\r\n"]]]]]]
[def repl/exception-handler [λ* [error]
""
[display/error error]]]
[def repl/history #nil]
[def repl/prompt [λ* []
"> "
"> "]]
[def repl/wasm [λ* [line]
""
[try repl/exception-handler [def expr [read line]] [eval* [cons do expr]]]]]
[def repl/readline [λ* []
""
[do [def line [readline [repl/prompt]]]
[when [nil? line]
[display "Bye!\r\n"]
[exit 0]]
[readline/history/add line]
[def read [read line]]
[def result [eval* [cons do read]]]
[set! repl/history [cons line repl/history]]
[display [cat [if [nil? result]
""
[str/write result]] "\n"]]]]]
[def repl [λ* []
""
[do [readline/history/load [readline/history/path]]
[while #t [try repl/exception-handler [repl/readline]] [readline/history/save [readline/history/path]]]]]]][unless [eq? OS "Emscripten"]
[test-add '[0 . ""] [popen "true"]]
[test-add #f [zero? [car [popen "false"]]]]
[test-add '[0 . "testerle\n"] [popen "echo testerle"]]]
