本文整理汇总了Java中com.sun.tools.javac.tree.JCTree.TYPECAST属性的典型用法代码示例。如果您正苦于以下问题：Java JCTree.TYPECAST属性的具体用法？Java JCTree.TYPECAST怎么用？Java JCTree.TYPECAST使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类com.sun.tools.javac.tree.JCTree的用法示例。
在下文中一共展示了JCTree.TYPECAST属性的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Java代码示例。
示例1: instantiatePolymorphicSignatureInstance
/**
* Compute a synthetic method type corresponding to the requested polymorphic
* method signature. The target return type is computed from the immediately
* enclosing scope surrounding the polymorphic-signature call.
*/
Type instantiatePolymorphicSignatureInstance(Env<AttrContext> env, Type site,
Name name,
MethodSymbol spMethod, // sig. poly. method or null if none
List<Type> argtypes) {
final Type restype;
//The return type for a polymorphic signature call is computed from
//the enclosing tree E, as follows: if E is a cast, then use the
//target type of the cast expression as a return type; if E is an
//expression statement, the return type is 'void' - otherwise the
//return type is simply 'Object'. A correctness check ensures that
//env.next refers to the lexically enclosing environment in which
//the polymorphic signature call environment is nested.
switch (env.next.tree.getTag()) {
case JCTree.TYPECAST:
JCTypeCast castTree = (JCTypeCast)env.next.tree;
restype = (TreeInfo.skipParens(castTree.expr) == env.tree) ?
castTree.clazz.type :
syms.objectType;
break;
case JCTree.EXEC:
JCTree.JCExpressionStatement execTree =
(JCTree.JCExpressionStatement)env.next.tree;
restype = (TreeInfo.skipParens(execTree.expr) == env.tree) ?
syms.voidType :
syms.objectType;
break;
default:
restype = syms.objectType;
}
List<Type> paramtypes = Type.map(argtypes, implicitArgType);
List<Type> exType = spMethod != null ?
spMethod.getThrownTypes() :
List.of(syms.throwableType); // make it throw all exceptions
MethodType mtype = new MethodType(paramtypes,
restype,
exType,
syms.methodClass);
return mtype;
}