lib/min_stack.nim
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import tables, random import ../core/parser, ../core/value, ../core/interpreter, ../core/utils # Operations on the whole stack proc stack_module*(i: In)= i.define("stack") .symbol("id") do (i: In): discard .symbol("pop") do (i: In): if i.stack.len < 1: raiseEmptyStack() discard i.pop .symbol("dup") do (i: In): i.push i.peek .symbol("dip") do (i: In): var q: MinValue i.reqQuotation q let v = i.pop i.unquote("<dip>", q) i.push v .symbol("swap") do (i: In): if i.stack.len < 2: raiseEmptyStack() let a = i.pop let b = i.pop i.push a i.push b .symbol("sip") do (i: In): var a, b: MinValue i.reqTwoQuotations a, b i.push b i.unquote("<sip>", a) i.push b .symbol("clear-stack") do (i: In): while i.stack.len > 0: discard i.pop .symbol("dump-stack") do (i: In): echo i.dump .symbol("get-stack") do (i: In): i.push i.stack.newVal(i.scope) .symbol("set-stack") do (i: In): var q: MinValue i.reqQuotation q i.stack = q.qVal .finalize() |