minim.nim
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import streams, critbits, parseopt2, strutils, os import core/types, 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_crypto, lib/min_fs const version* = "1.0.0-dev" var REPL = false var DEBUGGING = false const USE_LINENOISE = true const PRELUDE* = "lib/prelude.min".slurp.strip 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 Shell""" var CURRSCOPE*: ref MinScope 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 CURRSCOPE.symbols.keys: if startsWith(s, w): linenoiseAddCompletion completions, words.join(" ") & sep & s proc prompt(s: string): string = var res = linenoise(s) if not res.isNil: discard $linenoiseHistoryAdd(res) return $res proc stdLib(i: In) = i.lang_module i.io_module i.logic_module i.num_module i.stack_module i.str_module i.sys_module i.time_module i.fs_module i.crypto_module i.eval PRELUDE 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, "") echo "MiNiM Shell v" & version echo "-> Type 'exit' or 'quit' to exit." var line: string while true: when USE_LINENOISE: CURRSCOPE = i.scope linenoiseSetCompletionCallback completionCallback line = prompt(": ") if line.isNil: echo "-> Exiting..." quit(0) 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: if i.stack.len > 0: let last = i.stack[i.stack.len - 1] let n = $i.stack.len var output: string 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 |