Java TypeKind.CHAR属性代码示例

/**
 * Unbox a wrapper type into a TypeKind. Some additional types are mapped to TypeKinds which cannot really appear in 
 * expressions (at least I hope)
 * 
 * @param tm
 * @return 
 */
private static TypeKind unboxBoxed(TypeMirror tm) {
    TypeElement te = (TypeElement)((DeclaredType)tm).asElement();
    String qn = te.getQualifiedName().toString();
    if (!qn.startsWith("java.lang.")) { // NO18N
        if (qn.equals("java.math.BigInteger")) { // NOI18N
            return TypeKind.WILDCARD;
        }
        return null;
    }
    switch (qn.substring(10)) {
        case "Short": return TypeKind.SHORT; // NOI18N
        case "Long": return TypeKind.LONG; // NOI18N
        case "Byte": return TypeKind.BYTE; // NOI18N
        case "Integer": return TypeKind.INT; // NOI18N
        case "Double": return TypeKind.DOUBLE; // NOI18N
        case "Float": return TypeKind.FLOAT; // NOI18N
        case "Character": return TypeKind.CHAR; // NOI18N
        case "String": return TypeKind.OTHER; // NOI18N
        case "Object": return TypeKind.PACKAGE; // NOI18N
    }
    return null;
}
 

public TypeKind getPrimitiveTypeKind() {
    switch (typetag) {
        case TypeTags.BOOLEAN:
            return TypeKind.BOOLEAN;
        case TypeTags.BYTE:
            return TypeKind.BYTE;
        case TypeTags.SHORT:
            return TypeKind.SHORT;
        case TypeTags.INT:
            return TypeKind.INT;
        case TypeTags.LONG:
            return TypeKind.LONG;
        case TypeTags.CHAR:
            return TypeKind.CHAR;
        case TypeTags.FLOAT:
            return TypeKind.FLOAT;
        case TypeTags.DOUBLE:
            return TypeKind.DOUBLE;
        case TypeTags.VOID:
            return TypeKind.VOID;
        default:
            throw new AssertionError("unknown primitive type " + this);
    }
}
 

public TypeKind getKind() {
    switch (tag) {
    case BYTE:      return TypeKind.BYTE;
    case CHAR:      return TypeKind.CHAR;
    case SHORT:     return TypeKind.SHORT;
    case INT:       return TypeKind.INT;
    case LONG:      return TypeKind.LONG;
    case FLOAT:     return TypeKind.FLOAT;
    case DOUBLE:    return TypeKind.DOUBLE;
    case BOOLEAN:   return TypeKind.BOOLEAN;
    case VOID:      return TypeKind.VOID;
    case BOT:       return TypeKind.NULL;
    case NONE:      return TypeKind.NONE;
    default:        return TypeKind.OTHER;
    }
}
 

public TypeKind getPrimitiveTypeKind() {
    switch (this) {
    case BOOLEAN:
        return TypeKind.BOOLEAN;
    case BYTE:
        return TypeKind.BYTE;
    case SHORT:
        return TypeKind.SHORT;
    case INT:
        return TypeKind.INT;
    case LONG:
        return TypeKind.LONG;
    case CHAR:
        return TypeKind.CHAR;
    case FLOAT:
        return TypeKind.FLOAT;
    case DOUBLE:
        return TypeKind.DOUBLE;
    case VOID:
        return TypeKind.VOID;
    default:
        throw new AssertionError("unknown primitive type " + this);
    }
}
 

/**
 * Returns the kind from the character describing a primitive or void.
 *
 * @param ch the character
 * @return the kind
 */
public static TypeKind fromPrimitiveOrVoidTypeChar(char ch) {
    switch (ch) {
        case 'Z':
            return TypeKind.BOOLEAN;
        case 'C':
            return TypeKind.CHAR;
        case 'F':
            return TypeKind.FLOAT;
        case 'D':
            return TypeKind.DOUBLE;
        case 'B':
            return TypeKind.BYTE;
        case 'S':
            return TypeKind.SHORT;
        case 'I':
            return TypeKind.INT;
        case 'J':
            return TypeKind.LONG;
        case 'V':
            return TypeKind.VOID;
    }
    throw new IllegalArgumentException("unknown primitive or void type character: " + ch);
}
 

public Tree createType(String typeName, TypeElement scope) {
    TreeMaker make = getTreeMaker();
    TypeKind primitiveTypeKind = null;
    if ("boolean".equals(typeName)) {           // NOI18N
        primitiveTypeKind = TypeKind.BOOLEAN;
    } else if ("byte".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.BYTE;
    } else if ("short".equals(typeName)) {      // NOI18N
        primitiveTypeKind = TypeKind.SHORT;
    } else if ("int".equals(typeName)) {        // NOI18N
        primitiveTypeKind = TypeKind.INT;
    } else if ("long".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.LONG;
    } else if ("char".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.CHAR;
    } else if ("float".equals(typeName)) {      // NOI18N
        primitiveTypeKind = TypeKind.FLOAT;
    } else if ("double".equals(typeName)) {     // NOI18N
        primitiveTypeKind = TypeKind.DOUBLE;
    } else if ("void".equals(typeName)) {     // NOI18N
        primitiveTypeKind = TypeKind.VOID;
    }
    if (primitiveTypeKind != null) {
        return getTreeMaker().PrimitiveType(primitiveTypeKind);
    }
    Tree typeTree = makeQualIdent(typeName);
    if (typeTree == null) {
        // XXX does not handle imports; temporary until issue 102149 is fixed
        TypeMirror typeMirror = copy.getTreeUtilities().parseType(typeName, scope);
        typeTree = make.Type(typeMirror);
    }
    return typeTree;
}
 

@TriggerPatterns({
    @TriggerPattern(value = "new java.lang.StringBuffer($x)", constraints = @ConstraintVariableType(variable = "$x", type = "char")),
    @TriggerPattern(value = "new java.lang.StringBuilder($x)", constraints = @ConstraintVariableType(variable = "$x", type = "char"))
})
public static ErrorDescription run(HintContext ctx) {
    TreePath p = ctx.getPath();
    
    TypeMirror paramType = ctx.getInfo().getTrees().getTypeMirror(ctx.getVariables().get("$x")); // NOI18N
    if (paramType.getKind() != TypeKind.CHAR) {
        if (paramType.getKind() != TypeKind.DECLARED) {
            return null;
        }
        Element el = ((DeclaredType)paramType).asElement();
        if (el == null || el.getKind() != ElementKind.CLASS) {
            return null;
        }
        if (!((TypeElement)el).getQualifiedName().contentEquals("java.lang.Character")) {
            return null;
        }
    }
    
    TypeMirror tm = ctx.getInfo().getTrees().getTypeMirror(p);
    CharSequence tname = ctx.getInfo().getTypeUtilities().getTypeName(tm);
    
    return ErrorDescriptionFactory.forTree(ctx, p, Bundle.TEXT_StringBufferCharConstructor(tname), 
            new NewAndAppendFix(TreePathHandle.create(p, ctx.getInfo()), tname.toString()).toEditorFix());
}
 

/**
 * Determines if assignment looses precision.
 * Works only for primitive types, false for references.
 * 
 * @param from the assigned value type
 * @param to the target type
 * @return true, if precision is lost
 */
public static boolean loosesPrecision(TypeMirror from, TypeMirror to) {
    if (!from.getKind().isPrimitive() || !to.getKind().isPrimitive()) {
        return false;
    }
    if (to.getKind() == TypeKind.CHAR) {
        return true;
    } else if (from.getKind() == TypeKind.CHAR) {
        return to.getKind() == TypeKind.BYTE || to.getKind() == TypeKind.SHORT;
    }
    return to.getKind().ordinal() < from.getKind().ordinal();
}
 

public Tree createType(String typeName, TypeElement scope) {
    TreeMaker make = getTreeMaker();
    TypeKind primitiveTypeKind = null;
    if ("boolean".equals(typeName)) {           // NOI18N
        primitiveTypeKind = TypeKind.BOOLEAN;
    } else if ("byte".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.BYTE;
    } else if ("short".equals(typeName)) {      // NOI18N
        primitiveTypeKind = TypeKind.SHORT;
    } else if ("int".equals(typeName)) {        // NOI18N
        primitiveTypeKind = TypeKind.INT;
    } else if ("long".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.LONG;
    } else if ("char".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.CHAR;
    } else if ("float".equals(typeName)) {      // NOI18N
        primitiveTypeKind = TypeKind.FLOAT;
    } else if ("double".equals(typeName)) {     // NOI18N
        primitiveTypeKind = TypeKind.DOUBLE;
    } else if ("void".equals(typeName)) {     // NOI18N
        primitiveTypeKind = TypeKind.VOID;
    }
    if (primitiveTypeKind != null) {
        return getTreeMaker().PrimitiveType(primitiveTypeKind);
    }
    Tree typeTree = tryCreateQualIdent(typeName);
    if (typeTree == null) {
        // XXX does not handle imports; temporary until issue 102149 is fixed
        TypeMirror typeMirror = copy.getTreeUtilities().parseType(typeName, scope);
        if ( typeMirror == null || typeMirror.getKind() == TypeKind.ERROR ){
            typeTree = getTreeMaker().QualIdent( typeName );
        }
        else {
            typeTree = make.Type(typeMirror);
        }
    }
    return typeTree;
}
 

private static Tree getTypeTree(WorkingCopy workingCopy, String typeName) {
    TreeMaker make = workingCopy.getTreeMaker();
    TypeKind primitiveTypeKind = null;
    if ("boolean".equals(typeName)) {           // NOI18N
        primitiveTypeKind = TypeKind.BOOLEAN;
    } else if ("byte".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.BYTE;
    } else if ("short".equals(typeName)) {      // NOI18N
        primitiveTypeKind = TypeKind.SHORT;
    } else if ("int".equals(typeName)) {        // NOI18N
        primitiveTypeKind = TypeKind.INT;
    } else if ("long".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.LONG;
    } else if ("char".equals(typeName)) {       // NOI18N
        primitiveTypeKind = TypeKind.CHAR;
    } else if ("float".equals(typeName)) {      // NOI18N
        primitiveTypeKind = TypeKind.FLOAT;
    } else if ("double".equals(typeName)) {     // NOI18N
        primitiveTypeKind = TypeKind.DOUBLE;
    } else if ("void".equals(typeName)) {     // NOI18N
        primitiveTypeKind = TypeKind.VOID;
    }
    if (primitiveTypeKind != null) {
        return make.PrimitiveType(primitiveTypeKind);
    } else {
        return createQualIdent(workingCopy, typeName);
    }
}
 

public boolean isChar() {
  return returnType.getKind() == TypeKind.CHAR;
}
 

public boolean charType() {
  return returnType.getKind() == TypeKind.CHAR;
}
 

public boolean isNumberType() {
  TypeKind kind = returnType.getKind();
  return kind.isPrimitive()
      && kind != TypeKind.CHAR
      && kind != TypeKind.BOOLEAN;
}
 

private static Tree createType(WorkingCopy wc, TypeInfo type) {
    if(type == null) {
        return null;
    }
    String rawType = type.getRawType();
    
    TreeMaker make = wc.getTreeMaker();
    if (rawType.endsWith("[]")) { // NOI18N
        String rawTypeName = rawType.substring(0, rawType.length()-2);
        TypeInfo scalarTypeInfo = new TypeInfo(rawTypeName, type.getDeclaredTypeParameters());
        return make.ArrayType(createType(wc, scalarTypeInfo));
    }
    
    TypeKind primitiveTypeKind = null;
    if ("boolean".equals(rawType)) {           // NOI18N
        primitiveTypeKind = TypeKind.BOOLEAN;
    } else if ("byte".equals(rawType)) {       // NOI18N
        primitiveTypeKind = TypeKind.BYTE;
    } else if ("short".equals(rawType)) {      // NOI18N
        primitiveTypeKind = TypeKind.SHORT;
    } else if ("int".equals(rawType)) {        // NOI18N
        primitiveTypeKind = TypeKind.INT;
    } else if ("long".equals(rawType)) {       // NOI18N
        primitiveTypeKind = TypeKind.LONG;
    } else if ("char".equals(rawType)) {       // NOI18N
        primitiveTypeKind = TypeKind.CHAR;
    } else if ("float".equals(rawType)) {      // NOI18N
        primitiveTypeKind = TypeKind.FLOAT;
    } else if ("double".equals(rawType)) {     // NOI18N
        primitiveTypeKind = TypeKind.DOUBLE;
    } else if ("void".equals(rawType)) {
        primitiveTypeKind = TypeKind.VOID;
    }
    if (primitiveTypeKind != null) {
        return make.PrimitiveType(primitiveTypeKind);
    }
    
    TypeInfo[] declaredTypeParameters = type.getDeclaredTypeParameters();
    if (declaredTypeParameters == null || declaredTypeParameters.length == 0) {
        TypeElement typeElement = wc.getElements().getTypeElement(rawType);
        if (typeElement == null) {
            throw new IllegalArgumentException("Type " + rawType + " cannot be found"); // NOI18N
        }
        return make.QualIdent(typeElement);
    }
    else {
        TypeMirror typeMirror = getTypeMirror(wc, type);
        return make.Type(typeMirror);
    }
}
 

private Object resolveTypeCast(TypeCastTree node, TypeMirror target, Object result, Void p) {
    if (target.getKind() != TypeKind.DECLARED) {
        return null;
    }
    DeclaredType dt = (DeclaredType)target;
    TypeElement e = (TypeElement)dt.asElement();
    if (enhanceProcessing) {
        // accept null constant typecasted to anything as null
        if (result == NULL) {
            return NULL;
        } else if (result == NOT_NULL) {
            // some unspecified reference type...
            return result;
        }
    }
    String qn = e.getQualifiedName().toString();
    // type casts to String are permitted by JLS 15.28
    if ("java.lang.String".equals(qn)) { // NOI18N
        return result instanceof String ? result : null;
    } else if (!enhanceProcessing) {
        // other typecasts are not lised in JLS 15.28
        return null;
    }
    TypeMirror castee = info.getTrees().getTypeMirror(new TreePath(getCurrentPath(), node.getExpression()));
    if (!Utilities.isValidType(castee)) {
        return null;
    }
    if (info.getTypes().isAssignable(castee, target)) {
        return result;
    }
    // a constant of primitive type may be casted / wrapped to the wrapper type
    switch (qn) {
        case "java.lang.Boolean": // NOI18N
            if (result instanceof Boolean) return result;
            break;
        case "java.lang.Byte": // NOI18N
            // the casted expression may be typed as Byte or byte; 
            if (result instanceof Number && castee != null && castee.getKind() == TypeKind.BYTE) 
                return ((Number)result).byteValue();
            break;
        case "java.lang.Character": // NOI18N
            if (result instanceof Number && castee != null && castee.getKind() == TypeKind.CHAR) 
                return Character.valueOf((char)((Number)result).intValue());
            break;
        case "java.lang.Double": // NOI18N
            if (result instanceof Number && castee != null && castee.getKind() == TypeKind.DOUBLE) 
                return ((Number)result).doubleValue();
            break;
        case "java.lang.Float": // NOI18N
            if (result instanceof Number && castee != null && castee.getKind() == TypeKind.FLOAT) 
                return ((Number)result).floatValue();
            break;
        case "java.lang.Integer": // NOI18N
            if (result instanceof Number && castee != null && castee.getKind() == TypeKind.INT) 
                return ((Number)result).intValue();
            break;
        case "java.lang.Long": // NOI18N
            if (result instanceof Number && castee != null && castee.getKind() == TypeKind.LONG) 
                return ((Number)result).longValue();
            break;
        case "java.lang.Short": // NOI18N
            if (result instanceof Number && castee != null && castee.getKind() == TypeKind.SHORT) 
                return ((Number)result).shortValue();
            break;
    }
    return null;
}