minim.nim
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 |
import streams, critbits, parseopt2, strutils, os import core/parser, core/interpreter, core/utils, vendor/linenoise import lib/min_lang, lib/min_stack, lib/min_num, lib/min_str, lib/min_logic, lib/min_time, lib/min_io, lib/min_sys, lib/min_net const version* = "1.0.0-preview" var REPL = false const prelude = "lib/prelude.min".slurp.strip const USE_LINENOISE = true let usage* = " MiNiM v" & version & " - a tiny concatenative programming language" & """ (c) 2014-2016 Fabio Cevasco Usage: minim [options] [filename] Arguments: filename A minim file to interpret (default: STDIN). Options: -e, --evaluate Evaluate a minim program inline -h, --help Print this help -v, --version Print the program version -i, --interactive Start MiNiM's Read Eval Print Loop""" proc completionCallback*(str: cstring, completions: ptr linenoiseCompletions) {.cdecl.}= var words = ($str).split(" ") var w = if words.len > 0: words.pop else: "" var sep = "" if words.len > 0: sep = " " for s in ROOT.symbols.keys: if startsWith(s, w): linenoiseAddCompletion completions, words.join(" ") & sep & s proc prompt(s: string): string = var res = linenoise(s) discard $linenoiseHistoryAdd(res) return $res proc minimStream(s: Stream, filename: string) = var i = INTERPRETER i.pwd = filename.parentDir i.eval prelude i.open(s, filename) discard i.parser.getToken() i.interpret() i.close() proc minimString*(buffer: string) = minimStream(newStringStream(buffer), "input") proc minimFile*(filename: string) = var stream = newFileStream(filename, fmRead) if stream == nil: stderr.writeLine("Error - Cannot read from file: "& filename) stderr.flushFile() minimStream(stream, filename) proc minimFile*(file: File, filename="stdin") = var stream = newFileStream(stdin) if stream == nil: stderr.writeLine("Error - Cannot read from "& filename) stderr.flushFile() minimStream(stream, filename) proc minimRepl*() = var i = INTERPRETER var s = newStringStream("") i.open(s, "") echo "MiNiM v"&version&" - REPL initialized." i.eval prelude echo "-> Type 'exit' or 'quit' to exit." when USE_LINENOISE: linenoiseSetCompletionCallback completionCallback var line: string while true: line = prompt(": ") i.parser.buf = $i.parser.buf & $line i.parser.bufLen = i.parser.buf.len discard i.parser.getToken() try: i.interpret() except: warn getCurrentExceptionMsg() finally: stdout.write "-> " echo i.dump ### var file, s: string = "" for kind, key, val in getopt(): case kind: of cmdArgument: file = key of cmdLongOption, cmdShortOption: case key: of "debug", "d": INTERPRETER.debugging = true of "evaluate", "e": s = val of "help", "h": echo usage quit(0) of "version", "v": echo version of "interactive", "i": REPL = true else: discard else: discard if s != "": minimString(s) elif file != "": minimFile file elif REPL: minimRepl() quit(0) else: minimFile stdin |