Add recognizers for words and numbers
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@ -115,16 +115,73 @@ function CoreHelpers.makeCall(body: {function(Environment)}): function(Environme
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end
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function CoreHelpers.compile(env: Environment)
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local stack = env.activeDataStack
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local f = stack:pop() as function(Environment)
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table.insert(env.currentDefinition, f)
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end
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function CoreHelpers.literal(env: Environment)
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local stack = env.activeDataStack
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local val = stack:pop()
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local f = function(e: Environment)
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local s = e.activeDataStack
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s:push(val)
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end
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table.insert(env.currentDefinition, f)
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end
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function CoreHelpers.noop(_: Environment)
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return
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end
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function CoreHelpers.postpone(e: Environment)
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CoreHelpers.noop(e)
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end
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function CoreHelpers.execute(env: Environment)
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local stack = CoreHelpers.getActiveDataStack(env)
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local func: function(Environment) = stack:pop() as function(Environment)
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func(env)
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end
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function CoreHelpers.recNumber(env: Environment)
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local dataStack = CoreHelpers.getActiveDataStack(env)
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local token = dataStack:pop() as string
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if CoreHelpers.isNumber(token) then
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-- push the XTs onto the stack
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-- number
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dataStack:push(tonumber(token))
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-- interpret
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dataStack:push(CoreHelpers.noop)
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-- compile
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dataStack:push(CoreHelpers.literal)
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-- immediate
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dataStack:push(CoreHelpers.literal)
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-- return success
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dataStack:push(true)
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end
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dataStack:push(token)
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dataStack:push(false)
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end
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function CoreHelpers.recWord(env: Environment)
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local dataStack = CoreHelpers.getActiveDataStack(env)
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local token = dataStack:pop() as string
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for _, dictionary in ipairs(env.dictionaries) do
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local wordinfo = dictionary:lookup(token)
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if wordinfo then
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-- XT
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dataStack:push((wordinfo as WordInfo).func)
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-- interpret
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dataStack:push(CoreHelpers.execute)
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-- compile
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dataStack:push(CoreHelpers.compile)
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-- immediate
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dataStack:push(CoreHelpers.postpone)
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-- return success
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dataStack:push(true)
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end
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dataStack:push(token)
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dataStack:push(false)
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end
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end
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return CoreHelpers
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23
CoreWords.tl
23
CoreWords.tl
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@ -7,6 +7,9 @@ local popTwoOperands = helpers.popTwoOperands
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local defineWord = helpers.defineWord
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local ret = helpers.ret
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local makeCall = helpers.makeCall
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local literal = helpers.literal
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local compile = helpers.compile
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-- Mathematical operations
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local function add(env: Environment)
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local a, b = popTwoOperands(env)
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@ -161,26 +164,6 @@ local function exitCompileMode(e: Environment)
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e.compileState = false
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end
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local function compile(env: Environment)
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local stack = env.activeDataStack
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local f = stack:pop() as function(Environment)
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table.insert(env.currentDefinition, f)
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end
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local function literal(env: Environment)
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local stack = env.activeDataStack
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local val = stack:pop()
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local fun = function(e: Environment)
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local s = e.activeDataStack
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s:push(val)
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end
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table.insert(env.currentDefinition, fun)
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end
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local function postpone(env: Environment)
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end
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local CoreWords = Dictionary:new()
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local addInfo = WordInfo:new(add, false)
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local subInfo = WordInfo:new(sub, false)
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@ -17,7 +17,7 @@ local type DataStructures = record
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define: function(Dictionary, string, WordInfo)
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end
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record WordInfo
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func: function(Environment, ...: any)
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func: function(Environment)
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immediate: boolean
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new: function(WordInfo, function(Environment), boolean): WordInfo
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end
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