minpkg/core/shell.nim
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import
std/[
strutils,
sequtils,
json,
critbits,
algorithm,
streams,
os
]
import
env,
meta,
interpreter,
parser,
stdlib,
utils,
value
import
minline
proc interpret*(i: In, s: string): MinValue =
i.open(newStringStream(s), i.filename)
discard i.parser.getToken()
try:
result = i.interpret()
except CatchableError:
discard
i.close()
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)
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 symbols.mapIt(">" & $it)
if word.startsWith("*"):
return symbols.mapIt("*" & $it)
if word.startsWith("("):
return symbols.mapIt("(" & $it)
if word.startsWith("<"):
return toSeq(MINSYMBOLS.readFile.parseJson.pairs).mapIt("<" & $it[0])
if word.startsWith("$"):
return toSeq(envPairs()).mapIt("$" & $it[0])
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 printResult(i: In, res: MinValue) =
if res.isNil:
return
if i.stack.len > 0:
let n = $i.stack.len
if res.isQuotation and res.qVal.len > 1:
echo " ("
for item in res.qVal:
echo " " & $item
echo " ".repeat(n.len) & ")"
elif res.isCommand:
echo " [" & res.cmdVal & "]"
elif res.isDictionary and res.dVal.len > 1:
echo " {"
for item in res.dVal.pairs:
var v = ""
if item.val.kind == minProcOp:
v = "<native>"
else:
v = $item.val.val
echo " " & v & " :" & $item.key
if res.objType == "":
echo " ".repeat(n.len) & "}"
else:
echo " ".repeat(n.len) & " ;" & res.objType
echo " ".repeat(n.len) & "}"
else:
echo " $1" % [$i.stack[i.stack.len - 1]]
proc minSimpleRepl*(i: var MinInterpreter) =
i.stdLib()
var s = newStringStream("")
i.open(s, "<repl>")
var line: string
while true:
i.push(i.newSym("prompt"))
let vals = i.expect("str")
let v = vals[0]
let prompt = v.getString()
stdout.write(prompt)
stdout.flushFile()
line = stdin.readLine()
let r = i.interpret($line)
if $line != "":
i.printResult(r)
proc minRepl*(i: var MinInterpreter) =
DEV = true
i.stdLib()
var s = newStringStream("")
i.open(s, "<repl>")
var line: string
echo "$# shell v$#" % [pkgName, pkgVersion]
while true:
let symbols = toSeq(i.scope.symbols.keys)
EDITOR.completionCallback = proc(ed: LineEditor): seq[string] =
var completions = ed.getCompletions(symbols)
completions.sort()
return completions
# evaluate prompt
i.push(i.newSym("prompt"))
let vals = i.expect("str")
let v = vals[0]
let prompt = v.getString()
line = EDITOR.readLine(prompt)
let r = i.interpret($line)
if $line != "":
i.printResult(r)
proc minRepl*() =
var i = newMinInterpreter(filename = "<repl>")
i.minRepl()
proc minSimpleRepl*() =
var i = newMinInterpreter(filename = "<repl>")
i.minSimpleRepl()
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