C# (CSharp) OptExprSubEqualVar示例

示例#1

        public void SubIDInPrintTest()
        {
            var AST      = BuildAST(@"
var a, b;
print(a - a, b - b, b - a, a - a - b);
");
            var expected = @"var a, b;
print(0, 0, (b - a), (0 - b));";

            var opt = new OptExprSubEqualVar();

            AST.root.Visit(opt);
            var pp = new PrettyPrintVisitor();

            AST.root.Visit(pp);
            Assert.AreEqual(expected, pp.Text);
        }

示例#2

        public void SubIDTest()
        {
            var AST      = BuildAST(@"
var a, b;
a = b - b;
");
            var expected = @"var a, b;
a = 0;";

            var opt = new OptExprSubEqualVar();

            AST.root.Visit(opt);
            var pp = new PrettyPrintVisitor();

            AST.root.Visit(pp);
            Assert.AreEqual(expected, pp.Text);
        }