Added a function for memory size alignment

src/expression/Expression_test.go

@@ -117,6 +117,9 @@ func TestParse(t *testing.T) {
 		{"Dereferencing 2", "[a+b]", "(@ (+ a b))"},
 		{"Dereferencing 3", "[a+b]=c", "(= (@ (+ a b)) c)"},
 		{"Dereferencing 3", "[a+b]=c+d", "(= (@ (+ a b)) (+ c d))"},
+
+		{"Assign bitwise OR", "a|=b", "(|= a b)"},
+		{"Assign bitwise OR 2", "a|=b<<c", "(|= a (<< b c))"},
 	}
 
 	for _, test := range tests {

src/expression/Operator.go

@@ -51,6 +51,9 @@ var Operators = [64]Operator{
 	token.MulAssign: {"*=", math.MinInt8, 2},
 	token.DivAssign: {"/=", math.MinInt8, 2},
 	token.ModAssign: {"%=", math.MinInt8, 2},
+	token.AndAssign: {"&=", math.MinInt8, 2},
+	token.OrAssign:  {"|=", math.MinInt8, 2},
+	token.XorAssign: {"^=", math.MinInt8, 2},
 	token.ShrAssign: {">>=", math.MinInt8, 2},
 	token.ShlAssign: {"<<=", math.MinInt8, 2},
 }