com.google.javascript.jscomp.newtypes.TypeWithPropertiesStatics Maven / Gradle / Ivy
/*
* Copyright 2014 The Closure Compiler Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.javascript.jscomp.newtypes;
import com.google.common.collect.ImmutableSet;
/**
* Static methods that operate on {@code TypeWithProperties} instances.
*/
final class TypeWithPropertiesStatics {
// Never create any instances of this class
private TypeWithPropertiesStatics() {}
static JSType getProp(
ImmutableSet types, QualifiedName qname) {
if (types == null) {
return null;
}
JSType ptype = null;
for (TypeWithProperties t : types) {
if (t.mayHaveProp(qname)) {
JSType tmp = t.getProp(qname);
ptype = ptype == null ? tmp : JSType.join(ptype, tmp);
}
}
return ptype;
}
static JSType getDeclaredProp(
ImmutableSet types, QualifiedName qname) {
if (types == null) {
return null;
}
JSType ptype = null;
for (TypeWithProperties t : types) {
if (t.mayHaveProp(qname)) {
JSType declType = t.getDeclaredProp(qname);
if (declType != null) {
ptype = ptype == null ? declType : JSType.join(ptype, declType);
}
}
}
return ptype;
}
static boolean mayHaveProp(
ImmutableSet types, QualifiedName qname) {
if (types == null) {
return false;
}
for (TypeWithProperties t : types) {
if (t.mayHaveProp(qname)) {
return true;
}
}
return false;
}
static boolean hasProp(
ImmutableSet types, QualifiedName qname) {
if (types == null) {
return false;
}
for (TypeWithProperties t : types) {
if (!t.hasProp(qname)) {
return false;
}
}
return true;
}
static boolean hasConstantProp(
ImmutableSet types, QualifiedName qname) {
if (types == null) {
return false;
}
for (TypeWithProperties t : types) {
if (t.hasConstantProp(qname)) {
return true;
}
}
return false;
}
}