minpkg/lib/min_stack.nim
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import ../core/parser, ../core/value, ../core/interpreter, ../core/utils proc stack_module*(i: In) = let def = i.define() def.symbol("clear") do (i: In): while i.stack.len > 0: discard i.pop def.symbol("get") do (i: In): i.push i.stack.newVal def.symbol("set") do (i: In): let vals = i.expect("quot") let q = vals[0] i.stack = q.qVal def.symbol("pop") do (i: In): discard i.pop def.symbol("dup") do (i: In): i.push i.peek def.symbol("dip") do (i: In): let vals = i.expect("quot", "a") var q = vals[0] let v = vals[1] i.dequote(q) i.push v def.symbol("nip") do (i: In): let vals = i.expect("a", "a") let a = vals[0] i.push a def.symbol("cleave") do (i: In): var q: MinValue i.reqQuotationOfQuotations q let v = i.pop for s in q.qVal: var s1 = s i.push v i.dequote(s1) def.symbol("spread") do (i: In): var q: MinValue i.reqQuotationOfQuotations q var els = newSeq[MinValue](0) for el in 0..q.qVal.len-1: els.add i.pop var count = els.len-1 for s in q.qVal: var s1 = s i.push els[count] i.dequote(s1) count.dec def.symbol("keep") do (i: In): let vals = i.expect("quot", "a") var q = vals[0] let v = vals[1] i.push v i.dequote(q) i.push v def.symbol("swap") do (i: In): let vals = i.expect("a", "a") let a = vals[0] let b = vals[1] i.push a i.push b def.symbol("over") do (i: In): let vals = i.expect("a", "a") let a = vals[0] let b = vals[1] i.push b i.push a i.push b def.symbol("pick") do (i: In): let vals = i.expect("a", "a", "a") let a = vals[0] let b = vals[1] let c = vals[2] i.push c i.push b i.push a i.push c def.symbol("rollup") do (i: In): let vals = i.expect("a", "a", "a") let first = vals[0] let second = vals[1] let third = vals[2] i.push first i.push second i.push third def.symbol("rolldown") do (i: In): let vals = i.expect("a", "a", "a") let first = vals[0] let second = vals[1] let third = vals[2] i.push second i.push first i.push third def.symbol("cons") do (i: In): let vals = i.expect("quot", "a") let q = vals[0] let v = vals[1] i.push newVal(@[v] & q.qVal) def.symbol("swons") do (i: In): i.pushSym "swap" i.pushSym "cons" def.symbol("sip") do (i: In): let vals = i.expect("quot", "quot") var a = vals[0] let b = vals[1] i.push b i.dequote(a) i.push b def.finalize("stack") |