all repos — min @ c6348e0af74eca85eba945b93333dffebcd45a08

A small but practical concatenative programming language.

lib/min_dict.nim

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import 
  critbits 
import 
  ../core/parser, 
  ../core/value, 
  ../core/interpreter, 
  ../core/utils
  
# Operations on dictionaries
proc dict_module*(i: In)=

  let def = i.define()

  def.symbol("dhas?") do (i: In):
    let vals = i.expect("'sym", "dict")
    let k = vals[0]
    let d = vals[1]
    i.push d.dhas(k).newVal

  def.symbol("dget") do (i: In):
    let vals = i.expect("'sym", "dict")
    let k = vals[0]
    let d = vals[1]
    i.push i.dget(d, k)
    
  def.symbol("dset") do (i: In):
    let vals = i.expect("'sym", "a", "dict")
    let k = vals[0]
    let m = vals[1]
    var d = vals[2]
    i.push i.dset(d, k, m) 

  def.symbol("ddel") do (i: In):
    let vals = i.expect("'sym", "dict")
    let k = vals[0]
    var d = vals[1]
    i.push i.ddel(d, k)

  def.symbol("dkeys") do (i: In):
    let vals = i.expect("dict")
    let d = vals[0]
    i.push i.keys(d)

  def.symbol("dvalues") do (i: In):
    let vals = i.expect("dict")
    let d = vals[0]
    i.push i.values(d)

  def.symbol("ddup") do (i: In):
    let vals = i.expect("dict")
    let d = vals[0]
    var r = newDict(i.scope)
    for item in d.dVal.pairs:
      r.scope.symbols[item.key] = item.val
    i.push r

  def.symbol("dpick") do (i: In):
    let vals = i.expect("quot", "dict")
    var q = vals[0]
    var d = vals[1]
    var res = newDict(i.scope)
    for k in q.qVal:
      if d.dhas(k):
        i.dset(res, k, i.dget(d, k))
    i.push res

  def.sigil("?") do (i: In):
    i.push("dhas?".newSym)

  def.sigil("/") do (i: In):
    i.push("dget".newSym)

  def.sigil("%") do (i: In):
    i.push("dset".newSym)

  def.finalize("dict")