onVariableDeclaration

OnVariableDeclaration.cyan

package metaobjectTest


@doc{*
    Annotations of this metaobject should be attached to a local 
    variable. The attached DSL code is made in Myan, which supports 
    interpreted Cyan within parameterless methods declared with 'func': 
    
        func afterResTypes_codeToAdd {    
            // interpreted Cyan code
        }
    
    According to the method name, the Cyan code is interpreted in phase
    afterResTypes or semAn. Methods of interfaces
        IAction_semAn
        IActionNewPrototypes_semAn
        IAction_afterResTypes
        IActionNewPrototypes_afterResTypes
        IParseWithCyanCompiler_dpa 
        ICommunicateInPrototype_afterResTypes_semAn_afterSemAn    
        IActionVariableDeclaration_semAn
        
    can be implemented. To better understand this, see the documentation 
    for action_afterResTypes_semAn.
*}
open
object OnVariableDeclaration

    func run {
        @onVariableDeclaration{*
            func semAn_codeToAddAfter {
                return """  count = self getZero;   
                            Out println: "count = " ++ count;"""
                
            }
            func afterResTypes_codeToAdd {
                return [. "func getZero -> Int = 0; ", 
                          "func getZero -> Int" .];
            }
            
        *}
        var Int count = 1;
        assert self getZero == 0;
        assert count == 0;
    }
    
    
end