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 |
import streams, tables, parseopt2, strutils
import
core/parser,
core/interpreter,
core/utils
import
lib/lang,
lib/stack,
lib/quotations,
lib/numbers,
lib/strings,
lib/logic,
lib/time,
lib/io,
lib/sys
const version* = "0.1.0"
var debugging = false
var repl = false
const prelude = "lib/prelude.min".slurp.strip
const
USE_LINENOISE = false #(defined(i386) or defined(amd64))# and not defined(windows)
let usage* = " MiNiM v" & version & " - a tiny concatenative system programming language" & """
(c) 2014 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 Starts MiNiM's Read Eval Print Loop"""
when USE_LINENOISE:
import vendor/linenoise
proc completionCallback*(str: cstring, completions: ptr linenoiseCompletions) =
var words = ($str).split(" ")
var w = if words.len > 0: words.pop else: ""
var sep = ""
if words.len > 0:
sep = " "
for s in 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
else:
proc prompt(s: string): string =
stdout.write(s)
return stdin.readLine
proc minimStream(s: Stream, filename: string) =
var i = newMinInterpreter(debugging)
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 = newMinInterpreter(debugging)
var s = newStringStream("")
i.open(s, "")
echo "MiNiM v"&version&" - REPL initialized."
i.eval prelude
echo "Prelude loaded."
echo "-> Type 'exit' or 'quit' to exit."
#if USE_LINENOISE:
# discard 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, str: 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":
str = val
of "help", "h":
echo usage
quit(0)
of "version", "v":
echo version
of "interactive", "i":
repl = true
else:
discard
else:
discard
if str != "":
minimString(str)
elif file != "":
minimFile file
elif repl:
minimRepl()
quit(0)
else:
minimFile stdin
|