lib/min_logic.nim
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import math import ../core/parser, ../core/value, ../core/interpreter, ../core/utils # Comparison operators proc floatCompare(n1, n2: MinValue): bool = let a:float = if n1.kind != minFloat: n1.intVal.float else: n1.floatVal b:float = if n2.kind != minFloat: n2.intVal.float else: n2.floatVal if a.classify == fcNan and b.classify == fcNan: return true else: const FLOAT_MIN_NORMAL = 2e-1022 FLOAT_MAX_VALUE = (2-2e-52)*2e1023 epsilon = 0.00001 let absA = abs(a) absB = abs(b) diff = abs(a - b) if a == b: return true elif a == 0 or b == 0 or diff < FLOAT_MIN_NORMAL: return diff < (epsilon * FLOAT_MIN_NORMAL) else: return diff / min((absA + absB), FLOAT_MAX_VALUE) < epsilon proc logic_module*(i: In)= let def = i.define() def.symbol(">") do (i: In): var n1, n2: MinValue i.reqTwoNumbersOrStrings n2, n1 if n1.isNumber and n2.isNumber: if n1.isInt and n2.isInt: i.push newVal(n1.intVal > n2.intVal) elif n1.isInt and n2.isFloat: i.push newVal(n1.intVal.float > n2.floatVal) elif n1.isFloat and n2.isFloat: i.push newVal(n1.floatVal > n2.floatVal) elif n1.isFloat and n2.isInt: i.push newVal(n1.floatVal > n2.intVal.float) else: i.push newVal(n1.strVal > n2.strVal) def.symbol(">=") do (i: In): var n1, n2: MinValue i.reqTwoNumbersOrStrings n2, n1 if n1.isNumber and n2.isNumber: if n1.isInt and n2.isInt: i.push newVal(n1.intVal >= n2.intVal) elif n1.isInt and n2.isFloat: i.push newVal(n1.intVal.float > n2.floatVal or floatCompare(n1, n2)) elif n1.isFloat and n2.isFloat: i.push newVal(n1.floatVal > n2.floatVal or floatCompare(n1, n2)) elif n1.isFloat and n2.isInt: i.push newVal(n1.floatVal > n2.intVal.float or floatCompare(n1, n2)) else: i.push newVal(n1.strVal >= n2.strVal) def.symbol("<") do (i: In): var n1, n2: MinValue i.reqTwoNumbersOrStrings n1, n2 if n1.isNumber and n2.isNumber: if n1.isInt and n2.isInt: i.push newVal(n1.intVal > n2.intVal) elif n1.isInt and n2.isFloat: i.push newVal(n1.intVal.float > n2.floatVal) elif n1.isFloat and n2.isFloat: i.push newVal(n1.floatVal > n2.floatVal) elif n1.isFloat and n2.isInt: i.push newVal(n1.floatVal > n2.intVal.float) else: i.push newVal(n1.strVal > n2.strVal) def.symbol("<=") do (i: In): var n1, n2: MinValue i.reqTwoNumbersOrStrings n1, n2 if n1.isNumber and n2.isNumber: if n1.isInt and n2.isInt: i.push newVal(n1.intVal >= n2.intVal) elif n1.isInt and n2.isFloat: i.push newVal(n1.intVal.float > n2.floatVal or floatCompare(n1, n2)) elif n1.isFloat and n2.isFloat: i.push newVal(n1.floatVal > n2.floatVal or floatCompare(n1, n2)) elif n1.isFloat and n2.isInt: i.push newVal(n1.floatVal > n2.intVal.float or floatCompare(n1, n2)) else: i.push newVal(n1.strVal >= n2.strVal) def.symbol("==") do (i: In): var n1, n2: MinValue let vals = i.expect("a", "a") n1 = vals[0] n2 = vals[1] if (n1.kind == minFloat or n2.kind == minFloat) and n1.isNumber and n2.isNumber: i.push newVal(floatCompare(n1, n2)) else: i.push newVal(n1 == n2) def.symbol("!=") do (i: In): var n1, n2: MinValue let vals = i.expect("a", "a") n1 = vals[0] n2 = vals[1] if (n1.kind == minFloat or n2.kind == minFloat) and n1.isNumber and n2.isNumber: i.push newVal(not floatCompare(n1, n2)) i.push newVal(not (n1 == n2)) # Boolean Logic def.symbol("not") do (i: In): let vals = i.expect("bool") let b = vals[0] i.push newVal(not b.boolVal) def.symbol("and") do (i: In): let vals = i.expect("bool", "bool") let a = vals[0] let b = vals[1] i.push newVal(a.boolVal and b.boolVal) def.symbol("dequote-and") do (i: In): let vals = i.expect("a", "a") var a = vals[0] var b = vals[1] i.dequote(b) let resB = i.pop if (resB.isBool and resB.boolVal == false): i.push(false.newVal) else: i.dequote(a) let resA = i.pop if not resA.isBool: raiseInvalid("Result of first quotation is not a boolean value") if not resB.isBool: raiseInvalid("Result of second quotation is not a boolean value") i.push newVal(resA.boolVal and resB.boolVal) def.symbol("or") do (i: In): let vals = i.expect("bool", "bool") let a = vals[0] let b = vals[1] i.push newVal(a.boolVal or b.boolVal) def.symbol("dequote-or") do (i: In): let vals = i.expect("a", "a") var a = vals[0] var b = vals[1] i.dequote(b) let resB = i.pop if (resB.isBool and resB.boolVal == true): i.push(true.newVal) else: i.dequote(a) let resA = i.pop if not resA.isBool: raiseInvalid("Result of first quotation is not a boolean value") if not resB.isBool: raiseInvalid("Result of second quotation is not a boolean value") i.push newVal(resA.boolVal and resB.boolVal) def.symbol("xor") do (i: In): let vals = i.expect("bool", "bool") let a = vals[0] let b = vals[1] i.push newVal(a.boolVal xor b.boolVal) def.symbol("string?") do (i: In): if i.pop.kind == minString: i.push true.newVal else: i.push false.newVal def.symbol("integer?") do (i: In): if i.pop.kind == minInt: i.push true.newVal else: i.push false.newVal def.symbol("float?") do (i: In): if i.pop.kind == minFloat: i.push true.newVal else: i.push false.newVal def.symbol("number?") do (i: In): let a = i.pop if a.kind == minFloat or a.kind == minInt: i.push true.newVal else: i.push false.newVal def.symbol("boolean?") do (i: In): if i.pop.kind == minBool: i.push true.newVal else: i.push false.newVal def.symbol("quotation?") do (i: In): if i.pop.kind == minQuotation: i.push true.newVal else: i.push false.newVal def.symbol("dictionary?") do (i: In): if i.pop.isDictionary: i.push true.newVal else: i.push false.newVal def.symbol("type?") do (i: In): let vals = i.expect("'sym", "a") if vals[1].isTypedDictionary(vals[0].getString): i.push true.newVal else: i.push false.newVal def.finalize("logic") |