func (e *Evaluator) caseExpr(v *ast.CaseExpr) bool {
var target interface{} = true
if v.Value != nil {
target = v.Value.GetValue()
}
if target != nil {
for _, val := range v.WhenClauses {
cmp, err := types.Compare(target, val.Expr.GetValue())
if err != nil {
e.err = errors.Trace(err)
return false
}
if cmp == 0 {
v.SetValue(val.Result.GetValue())
return true
}
}
}
if v.ElseClause != nil {
v.SetValue(v.ElseClause.GetValue())
} else {
v.SetValue(nil)
}
return true
}
