com.sun.tools.javac.code.Types.isSubtypeNoCapture()方法的使用及代码示例

x33g5p2x  于2022-01-30 转载在 其他  
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本文整理了Java中com.sun.tools.javac.code.Types.isSubtypeNoCapture()方法的一些代码示例，展示了Types.isSubtypeNoCapture()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Types.isSubtypeNoCapture()方法的具体详情如下：
包路径：com.sun.tools.javac.code.Types
类名称：Types
方法名：isSubtypeNoCapture

Types.isSubtypeNoCapture介绍

暂无

代码示例

代码示例来源：origin: sc.fiji/javac

@Override
public Boolean visitUndetVar(UndetVar t, Type s) {
  //todo: test against origin needed? or replace with substitution?
  if (t == s || t.qtype == s || s.tag == ERROR || s.tag == UNKNOWN)
    return true;
  if (t.inst != null)
    return isSubtypeNoCapture(t.inst, s); // TODO: ", warn"?
  t.hibounds = t.hibounds.prepend(s);
  return true;
}

代码示例来源：origin: org.jvnet.sorcerer/sorcerer-javac

@Override
public Boolean visitUndetVar(UndetVar t, Type s) {
  //todo: test against origin needed? or replace with substitution?
  if (t == s || t.qtype == s || s.tag == ERROR || s.tag == UNKNOWN)
    return true;
  if (t.inst != null)
    return isSubtypeNoCapture(t.inst, s); // TODO: ", warn"?
  t.hibounds = t.hibounds.prepend(s);
  return true;
}

代码示例来源：origin: org.jvnet.sorcerer/sorcerer-javac

public Boolean visitType(Type t, Type s) {
  switch (t.tag) {
  case BYTE: case CHAR:
    return (t.tag == s.tag ||
         t.tag + 2 <= s.tag && s.tag <= DOUBLE);
  case SHORT: case INT: case LONG: case FLOAT: case DOUBLE:
    return t.tag <= s.tag && s.tag <= DOUBLE;
  case BOOLEAN: case VOID:
    return t.tag == s.tag;
  case TYPEVAR:
    return isSubtypeNoCapture(t.getUpperBound(), s);
  case BOT:
    return
      s.tag == BOT || s.tag == CLASS ||
      s.tag == ARRAY || s.tag == TYPEVAR;
  case NONE:
    return false;
  default:
    throw new AssertionError("isSubtype " + t.tag);
  }
}

代码示例来源：origin: sc.fiji/javac

public Boolean visitType(Type t, Type s) {
  switch (t.tag) {
  case BYTE: case CHAR:
    return (t.tag == s.tag ||
         t.tag + 2 <= s.tag && s.tag <= DOUBLE);
  case SHORT: case INT: case LONG: case FLOAT: case DOUBLE:
    return t.tag <= s.tag && s.tag <= DOUBLE;
  case BOOLEAN: case VOID:
    return t.tag == s.tag;
  case TYPEVAR:
    return isSubtypeNoCapture(t.getUpperBound(), s);
  case BOT:
    return
      s.tag == BOT || s.tag == CLASS ||
      s.tag == ARRAY || s.tag == TYPEVAR;
  case NONE:
    return false;
  default:
    throw new AssertionError("isSubtype " + t.tag);
  }
}

代码示例来源：origin: org.jvnet.sorcerer/sorcerer-javac

void debugContainsType(WildcardType t, Type s) {
  System.err.println();
  System.err.format(" does %s contain %s?%n", t, s);
  System.err.format(" %s U(%s) <: U(%s) %s = %s%n",
           upperBound(s), s, t, U(t),
           t.isSuperBound()
           || isSubtypeNoCapture(upperBound(s), U(t)));
  System.err.format(" %s L(%s) <: L(%s) %s = %s%n",
           L(t), t, s, lowerBound(s),
           t.isExtendsBound()
           || isSubtypeNoCapture(L(t), lowerBound(s)));
  System.err.println();
}

代码示例来源：origin: sc.fiji/javac

void debugContainsType(WildcardType t, Type s) {
  System.err.println();
  System.err.format(" does %s contain %s?%n", t, s);
  System.err.format(" %s U(%s) <: U(%s) %s = %s%n",
           upperBound(s), s, t, U(t),
           t.isSuperBound()
           || isSubtypeNoCapture(upperBound(s), U(t)));
  System.err.format(" %s L(%s) <: L(%s) %s = %s%n",
           L(t), t, s, lowerBound(s),
           t.isExtendsBound()
           || isSubtypeNoCapture(L(t), lowerBound(s)));
  System.err.println();
}

代码示例来源：origin: konsoletyper/teavm-javac

@Override
public Boolean visitClassType(ClassType t, Type s) {
  Type sup = asSuper(t, s.tsym);
  if (sup == null) return false;
  // If t is an intersection, sup might not be a class type
  if (!sup.hasTag(CLASS)) return isSubtypeNoCapture(sup, s);
  return sup.tsym == s.tsym
     // Check type variable containment
    && (!s.isParameterized() || containsTypeRecursive(s, sup))
    && isSubtypeNoCapture(sup.getEnclosingType(),
               s.getEnclosingType());
}

代码示例来源：origin: konsoletyper/teavm-javac

public Type glb(Type t, Type s) {
  if (s == null)
    return t;
  else if (t.isPrimitive() || s.isPrimitive())
    return syms.errType;
  else if (isSubtypeNoCapture(t, s))
    return t;
  else if (isSubtypeNoCapture(s, t))
    return s;
  List<Type> closure = union(closure(t), closure(s));
  return glbFlattened(closure, t);
}
//where

代码示例来源：origin: sc.fiji/javac

@Override
public Boolean visitWildcardType(WildcardType t, Type s) {
  if (s.tag >= firstPartialTag)
    return containedBy(s, t);
  else {
    // debugContainsType(t, s);
    return isSameWildcard(t, s)
      || isCaptureOf(s, t)
      || ((t.isExtendsBound() || isSubtypeNoCapture(L(t), lowerBound(s))) &&
        (t.isSuperBound() || isSubtypeNoCapture(upperBound(s), U(t))));
  }
}

代码示例来源：origin: org.jvnet.sorcerer/sorcerer-javac

@Override
public Boolean visitWildcardType(WildcardType t, Type s) {
  if (s.tag >= firstPartialTag)
    return containedBy(s, t);
  else {
    // debugContainsType(t, s);
    return isSameWildcard(t, s)
      || isCaptureOf(s, t)
      || ((t.isExtendsBound() || isSubtypeNoCapture(L(t), lowerBound(s))) &&
        (t.isSuperBound() || isSubtypeNoCapture(upperBound(s), U(t))));
  }
}

代码示例来源：origin: sc.fiji/javac

@Override
public Boolean visitArrayType(ArrayType t, Type s) {
  if (s.tag == ARRAY) {
    if (t.elemtype.tag <= lastBaseTag)
      return isSameType(t.elemtype, elemtype(s));
    else
      return isSubtypeNoCapture(t.elemtype, elemtype(s));
  }
  if (s.tag == CLASS) {
    Name sname = s.tsym.getQualifiedName();
    return sname == names.java_lang_Object
      || sname == names.java_lang_Cloneable
      || sname == names.java_io_Serializable;
  }
  return false;
}

代码示例来源：origin: org.jvnet.sorcerer/sorcerer-javac

@Override
public Boolean visitArrayType(ArrayType t, Type s) {
  if (s.tag == ARRAY) {
    if (t.elemtype.tag <= lastBaseTag)
      return isSameType(t.elemtype, elemtype(s));
    else
      return isSubtypeNoCapture(t.elemtype, elemtype(s));
  }
  if (s.tag == CLASS) {
    Name sname = s.tsym.getQualifiedName();
    return sname == names.java_lang_Object
      || sname == names.java_lang_Cloneable
      || sname == names.java_io_Serializable;
  }
  return false;
}

代码示例来源：origin: org.kohsuke.sorcerer/sorcerer-javac

@Override
      public Boolean visitWildcardType(WildcardType t, Type s) {
        if (s.isPartial())
          return containedBy(s, t);
        else {
//                    debugContainsType(t, s);
          return isSameWildcard(t, s)
            || isCaptureOf(s, t)
            || ((t.isExtendsBound() || isSubtypeNoCapture(L(t), lowerBound(s))) &&
              (t.isSuperBound() || isSubtypeNoCapture(upperBound(s), U(t))));
        }
      }

代码示例来源：origin: org.kohsuke.sorcerer/sorcerer-javac

@Override
public Boolean visitClassType(ClassType t, Type s) {
  Type sup = asSuper(t, s.tsym);
  return sup != null
    && sup.tsym == s.tsym
    // You're not allowed to write
    //     Vector<Object> vec = new Vector<String>();
    // But with wildcards you can write
    //     Vector<? extends Object> vec = new Vector<String>();
    // which means that subtype checking must be done
    // here instead of same-type checking (via containsType).
    && (!s.isParameterized() || containsTypeRecursive(s, sup))
    && isSubtypeNoCapture(sup.getEnclosingType(),
               s.getEnclosingType());
}

代码示例来源：origin: konsoletyper/teavm-javac

private List<Type> pruneInterfaces(Type t) {
  ListBuffer<Type> result = new ListBuffer<>();
  for (Type t1 : types.interfaces(t)) {
    boolean shouldAdd = true;
    for (Type t2 : types.interfaces(t)) {
      if (t1 != t2 && types.isSubtypeNoCapture(t2, t1)) {
        shouldAdd = false;
      }
    }
    if (shouldAdd) {
      result.append(t1);
    }
  }
  return result.toList();
}

代码示例来源：origin: org.kohsuke.sorcerer/sorcerer-javac

private List<Type> pruneInterfaces(Type t) {
  ListBuffer<Type> result = new ListBuffer<>();
  for (Type t1 : types.interfaces(t)) {
    boolean shouldAdd = true;
    for (Type t2 : types.interfaces(t)) {
      if (t1 != t2 && types.isSubtypeNoCapture(t2, t1)) {
        shouldAdd = false;
      }
    }
    if (shouldAdd) {
      result.append(t1);
    }
  }
  return result.toList();
}

代码示例来源：origin: konsoletyper/teavm-javac

@Override
      public Boolean visitWildcardType(WildcardType t, Type s) {
        if (s.isPartial())
          return containedBy(s, t);
        else {
//                    debugContainsType(t, s);
          return isSameWildcard(t, s)
            || t.type == s
            || isCaptureOf(s, t)
            || ((t.isExtendsBound() || isSubtypeNoCapture(wildLowerBound(t), cvarLowerBound(wildLowerBound(s)))) &&
              // TODO: JDK-8039214, cvarUpperBound call here is incorrect
              (t.isSuperBound() || isSubtypeNoCapture(cvarUpperBound(wildUpperBound(s)), wildUpperBound(t))));
        }
      }

代码示例来源：origin: org.kohsuke.sorcerer/sorcerer-javac

@Override
public Boolean visitArrayType(ArrayType t, Type s) {
  if (s.hasTag(ARRAY)) {
    if (t.elemtype.isPrimitive())
      return isSameType(t.elemtype, elemtype(s));
    else
      return isSubtypeNoCapture(t.elemtype, elemtype(s));
  }
  if (s.hasTag(CLASS)) {
    Name sname = s.tsym.getQualifiedName();
    return sname == names.java_lang_Object
      || sname == names.java_lang_Cloneable
      || sname == names.java_io_Serializable;
  }
  return false;
}

代码示例来源：origin: konsoletyper/teavm-javac

@Override
public Boolean visitArrayType(ArrayType t, Type s) {
  if (s.hasTag(ARRAY)) {
    if (t.elemtype.isPrimitive())
      return isSameType(t.elemtype, elemtype(s));
    else
      return isSubtypeNoCapture(t.elemtype, elemtype(s));
  }
  if (s.hasTag(CLASS)) {
    Name sname = s.tsym.getQualifiedName();
    return sname == names.java_lang_Object
      || sname == names.java_lang_Cloneable
      || sname == names.java_io_Serializable;
  }
  return false;
}

代码示例来源：origin: sc.fiji/javac

/**
 * Return the minimum types of a closure, suitable for computing
 * compoundMin or glb.
 */
private List<Type> closureMin(List<Type> cl) {
  ListBuffer<Type> classes = lb();
  ListBuffer<Type> interfaces = lb();
  while (!cl.isEmpty()) {
    Type current = cl.head;
    if (current.isInterface())
      interfaces.append(current);
    else
      classes.append(current);
    ListBuffer<Type> candidates = lb();
    for (Type t : cl.tail) {
      if (!isSubtypeNoCapture(current, t))
        candidates.append(t);
    }
    cl = candidates.toList();
  }
  return classes.appendList(interfaces).toList();
}

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