lib/min_logic.nim
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 |
import
tables,
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
i.reqTwoSimilarTypesNonSymbol n2, n1
if n1.kind == minFloat or n2.kind == minFloat:
i.push newVal(floatCompare(n1, n2))
else:
i.push newVal(n1 == n2)
def.symbol("!=") do (i: In):
var n1, n2: MinValue
i.reqTwoSimilarTypesNonSymbol n2, n1
if n1.kind == minFloat or n2.kind == minFloat:
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("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("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.peek.kind == minString:
i.push true.newVal
else:
i.push false.newVal
def.symbol("integer?") do (i: In):
if i.peek.kind == minInt:
i.push true.newVal
else:
i.push false.newVal
def.symbol("float?") do (i: In):
if i.peek.kind == minFloat:
i.push true.newVal
else:
i.push false.newVal
def.symbol("number?") do (i: In):
if i.peek.kind == minFloat or i.peek.kind == minInt:
i.push true.newVal
else:
i.push false.newVal
def.symbol("boolean?") do (i: In):
if i.peek.kind == minBool:
i.push true.newVal
else:
i.push false.newVal
def.symbol("quotation?") do (i: In):
if i.peek.kind == minQuotation:
i.push true.newVal
else:
i.push false.newVal
def.symbol("dictionary?") do (i: In):
if i.peek.isDictionary:
i.push true.newVal
else:
i.push false.newVal
def.finalize("logic")
|