本文整理汇总了C#中Expr.Visit方法的典型用法代码示例。如果您正苦于以下问题：C# Expr.Visit方法的具体用法？C# Expr.Visit怎么用？C# Expr.Visit使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Expr的用法示例。
在下文中一共展示了Expr.Visit方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetMemberAccess
/// <summary>
/// Gets a member access object representing the a member access.
/// </summary>
/// <param name="node"></param>
/// <param name="ctx"></param>
/// <param name="varExp"></param>
/// <param name="memberName"></param>
/// <returns></returns>
public static MemberAccess GetMemberAccess(AstNode node, Context ctx, Expr varExp, string memberName, IAstVisitor visitor)
{
var isVariableExp = varExp.IsNodeType(NodeTypes.SysVariable);
var variableName = isVariableExp ? ((VariableExpr) varExp).Name : string.Empty;
// CASE 1: External function call "user.create"
if (isVariableExp && FunctionHelper.IsExternalFunction(ctx.ExternalFunctions, variableName, memberName))
return new MemberAccess(MemberMode.FunctionExternal) {Name = variableName, MemberName = memberName};
// CASE 2. Static method call: "Person.Create"
if (isVariableExp)
{
var result = MemberHelper.IsExternalTypeName(ctx.Memory, ctx.Types, variableName);
if (result.Success)
return MemberHelper.GetExternalTypeMember(node, (Type) result.Item, variableName, null, memberName, true);
}
// CASE 3: Module
if (varExp.IsNodeType(NodeTypes.SysVariable))
{
var name = varExp.ToQualifiedName();
if (!ctx.Memory.Contains(name))
{
var modresult = ResolveSymbol(varExp.SymScope, name);
if (modresult != null) return modresult;
}
}
// CASE 4: Nested member.
var res = varExp.Visit(visitor);
if (res is MemberAccess )
{
return res as MemberAccess;
}
var obj = res as LObject;
// Check for empty objects.
ExceptionHelper.NotNull(node, obj, "member access");
var type = obj.Type;
// Case 3: Method / Property on FluentScript type
bool isCoreType = obj.Type.IsBuiltInType();
if (isCoreType)
{
var result = MemberHelper.GetLangBasicTypeMember(node, ctx.Methods, obj, memberName);
return result;
}
// CASE 4: Method / Property on External/Host language type (C#)
var lclass = obj as LClass;
var lclassType = lclass.Type as LClassType;
var member = MemberHelper.GetExternalTypeMember(node, lclassType.DataType, variableName, lclass.Value, memberName, false);
return member;
}