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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 |
import streams, critbits, parseopt2, strutils, os, json, sequtils, algorithm import core/linedit, core/consts, core/parser, core/value, core/interpreter, core/utils, core/zip import lib/min_lang, lib/min_num, lib/min_str, lib/min_logic, lib/min_time, lib/min_io, lib/min_sys, lib/min_crypto, lib/min_fs var REPL = false var DEBUGGING = false const PRELUDE* = "prelude.min".slurp.strip let usage* = """ $1 v$2 - a tiny concatenative shell and programming language (c) 2014-2016 Fabio Cevasco Usage: minim [options] [filename] Arguments: filename A $1 file to interpret (default: STDIN). Options: -e, --evaluate Evaluate a $1 program inline -h, --help Print this help -v, --version Print the program version -i, --interactive Start $1 shell""" % [appname, version] proc getExecs(): seq[string] = var res = newSeq[string](0) let getFiles = proc(dir: string) = for c, s in walkDir(dir, true): if (c == pcFile or c == pcLinkToFile) and not res.contains(s): res.add s getFiles(getCurrentDir()) for dir in "PATH".getEnv.split(PathSep): getFiles(dir) res.sort(system.cmp) return res proc getCompletions(ed: LineEditor, symbols: seq[string]): seq[string] = var words = ed.lineText.split(" ") var word: string if words.len == 0: word = ed.lineText else: word = words[words.len-1] if word.startsWith("'"): return symbols.mapIt("'" & $it) elif word.startsWith("~"): return symbols.mapIt("~" & $it) if word.startsWith("@"): return symbols.mapIt("@" & $it) if word.startsWith(">"): return symbols.mapIt(">" & $it) if word.startsWith("*"): return symbols.mapIt("*" & $it) if word.startsWith("("): return symbols.mapIt("(" & $it) if word.startsWith("<"): return toSeq(MINIMSYMBOLS.readFile.parseJson.pairs).mapIt("<" & $it[0]) if word.startsWith("$"): return toSeq(envPairs()).mapIt("$" & $it[0]) if word.startsWith("!"): return getExecs().mapIt("!" & $it) if word.startsWith("&"): return getExecs().mapIt("&" & $it) if word.startsWith("\""): var f = word[1..^1] if f == "": f = getCurrentDir().replace("\\", "/") return toSeq(walkDir(f, true)).mapIt("\"$1" % it.path.replace("\\", "/")) elif f.dirExists: f = f.replace("\\", "/") if f[f.len-1] != '/': f = f & "/" return toSeq(walkDir(f, true)).mapIt("\"$1$2" % [f, it.path.replace("\\", "/")]) else: var dir: string if f.contains("/") or dir.contains("\\"): dir = f.parentDir let file = f.extractFileName return toSeq(walkDir(dir, true)).filterIt(it.path.toLowerAscii.startsWith(file.toLowerAscii)).mapIt("\"$1/$2" % [dir, it.path.replace("\\", "/")]) else: dir = getCurrentDir() return toSeq(walkDir(dir, true)).filterIt(it.path.toLowerAscii.startsWith(f.toLowerAscii)).mapIt("\"$1" % [it.path.replace("\\", "/")]) return symbols proc stdLib(i: In) = i.lang_module i.io_module i.logic_module i.num_module i.str_module i.sys_module i.time_module i.fs_module i.crypto_module i.eval PRELUDE if not MINIMSYMBOLS.fileExists: MINIMSYMBOLS.writeFile("{}") if not MINIMHISTORY.fileExists: MINIMHISTORY.writeFile("") if not MINIMRC.fileExists: MINIMRC.writeFile("") i.eval MINIMRC.readFile() proc minimStream(s: Stream, filename: string, debugging = false) = var i = newMinInterpreter(debugging) i.pwd = filename.parentDir i.stdLib() i.open(s, filename) discard i.parser.getToken() i.interpret() i.close() proc minimString*(buffer: string, debugging = false) = minimStream(newStringStream(buffer), "input", debugging) proc minimFile*(filename: string, debugging = false) = var stream = newFileStream(filename, fmRead) if stream == nil: stderr.writeLine("Error - Cannot read from file: "& filename) stderr.flushFile() minimStream(stream, filename, debugging) proc minimFile*(file: File, filename="stdin", debugging = false) = var stream = newFileStream(stdin) if stream == nil: stderr.writeLine("Error - Cannot read from "& filename) stderr.flushFile() minimStream(stream, filename, debugging) proc minimRepl*(i: var MinInterpreter) = i.stdLib() var s = newStringStream("") i.open(s, "") var line: string #echo "$1 v$2" % [appname, version] var ed = initEditor(historyFile = MINIMHISTORY) while true: let symbols = toSeq(i.scope.symbols.keys) ed.completionCallback = proc(ed: LineEditor): seq[string] = return ed.getCompletions(symbols) # evaluate prompt i.apply(i.scope.getSymbol("prompt")) var v: MinValue i.reqString(v) let prompt = v.getString() line = ed.readLine(prompt) i.parser.buf = $i.parser.buf & $line i.parser.bufLen = i.parser.buf.len discard i.parser.getToken() try: i.interpret() except: stderr.writeLine getCurrentExceptionMsg() finally: i.halt = false if i.stack.len > 0: let last = i.stack[i.stack.len - 1] let n = $i.stack.len if last.isQuotation and last.qVal.len > 1: echo "{$1} -> (" % n for item in last.qVal: echo " " & $item echo " ".repeat(n.len) & " )" else: echo "{$1} -> $2" % [$i.stack.len, $i.stack[i.stack.len - 1]] else: echo "{0} --" proc minimRepl*(debugging = false) = var i = newMinInterpreter(debugging) i.minimRepl ### var file, s: string = "" for kind, key, val in getopt(): case kind: of cmdArgument: file = key of cmdLongOption, cmdShortOption: case key: of "debug", "d": DEBUGGING = true of "evaluate", "e": s = val of "help", "h": echo usage quit(0) of "version", "v": echo version quit(0) of "interactive", "i": REPL = true else: discard else: discard if s != "": minimString(s, DEBUGGING) elif file != "": minimFile file, DEBUGGING elif REPL: minimRepl DEBUGGING quit(0) else: minimFile stdin, "stdin", DEBUGGING |