Fix #31. Bitwise operators on numbers.

test/number/bitwise_and.wren

@@ -0,0 +1,12 @@
+IO.print(0 & 0) // expect: 0
+IO.print(2863311530 & 1431655765) // expect: 0
+IO.print(4042322160 & 1010580540) // expect: 808464432
+
+// Max u32 value.
+IO.print(4294967295 & 4294967295) // expect: 4294967295
+
+// Past max u32 value.
+IO.print(4294967296 & 4294967296) // expect: 0
+
+// TODO: Negative numbers.
+// TODO: Floating-point numbers.

test/number/bitwise_and_operand_not_num.wren

@@ -0,0 +1 @@
+1 & false // expect runtime error: Right operand must be a number.

test/number/bitwise_or.wren

@@ -0,0 +1,12 @@
+IO.print(0 | 0) // expect: 0
+IO.print(2863311530 | 1431655765) // expect: 4294967295
+IO.print(3435973836 | 1717986918) // expect: 4008636142
+
+// Max u32 value.
+IO.print(4294967295 | 4294967295) // expect: 4294967295
+
+// Past max u32 value.
+IO.print(4294967296 | 4294967296) // expect: 0
+
+// TODO: Negative numbers.
+// TODO: Floating-point numbers.

test/number/bitwise_or_operand_not_num.wren

@@ -0,0 +1 @@
+1 | false // expect runtime error: Right operand must be a number.