All entries for Wednesday 17 May 2006

AssignFields Macro

Another handy Boo macro:

class AssignFieldsMacro(AbstractAstMacro):

    override def Expand(macro as MacroStatement):
        ctor = (macro.ParentNode.ParentNode as Constructor)
        b = Block()
        for param in ctor.Parameters:
            assign = BinaryExpression(
                BinaryOperatorType.Assign,
                ReferenceExpression("_" + param.Name),
                ReferenceExpression(param.Name)
            )
            b.Add(ExpressionStatement(assign))
        return b

This lets me do this:

class Foo:
    
    [property(Name)]
    _name as string
    [property(Age)]
    _age as int
    [property(Food)]
    _food as bool
    
    def constructor(name as string, age as int, food as bool):
        AssignFields
        # inserts:
        # _name = name
        # _age = age
        # _food = food
        
f = Foo("hello", 42, true)
print f.Name
print f.Age
print f.Food

certainly saves a bit of typing!

: 17 May 2006 19:41 |  Tags: Boo Coding Dotnet |  Comments (0) |  Close comments |  Report a problem

Google Trend: C# vs Java

Check out Google Trends ! Very cool way to see what people are searching for…
This is C# (in blue) and Java (in red):

: 17 May 2006 14:01 |  Comments (2) |  Close comments |  Report a problem