StructContext.java

/*
 * Copyright (C) 2012 Facebook, Inc.
 *
 * 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.facebook.swift.generator.template;

import java.util.List;
import java.util.Set;

import com.google.common.base.Function;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;

import com.facebook.swift.generator.SwiftDocumentContext;

public class StructContext extends BaseJavaContext
{
    private final String name;
    private final String javaPackage;
    private final String javaName;

    private final List<FieldContext> fields = Lists.newArrayList();

    StructContext(SwiftDocumentContext swiftDocumentContext, String name, String javaPackage, String javaName)
    {
        super(swiftDocumentContext);
        this.name = name;
        this.javaPackage = javaPackage;
        this.javaName = javaName;
    }

    public void addField(final FieldContext field)
    {
        this.fields.add(field);
    }

    @Deprecated
    public boolean getHasUniqueFieldTypes()
    {
      List<String> fieldTypesList = Lists.transform(this.fields, new Function<FieldContext, String>() {
          public String apply(FieldContext field) { return field.getJavaType(); }
      });
      Set<String> fieldTypesSet = Sets.newHashSet(fieldTypesList);
      return fieldTypesSet.size() == fieldTypesList.size();
    }

    public boolean getHasUniqueFieldTypesUnderErasure()
    {
        List<String> fieldTypesList = Lists.transform(this.fields, new Function<FieldContext, String>() {
            public String apply(FieldContext field) {
                // remove generics
                String javaType = field.getJavaType();
                int startTypeParameter = javaType.indexOf('<');
                if (startTypeParameter >= 0) {
                    // there can't be anything after the type parameter, so the > needs
                    // to be the last character
                    // we omit the <> as container types are required to have the type parameter
                    javaType = javaType.substring(0, startTypeParameter);
                }
                return javaType;
            }
        });
        Set<String> fieldTypesSet = Sets.newHashSet(fieldTypesList);
        return fieldTypesSet.size() == fieldTypesList.size();
    }

    public List<FieldContext> getFields()
    {
        return fields;
    }

    public String getName()
    {
        return name;
    }

    @Override
    public String getJavaPackage()
    {
        return javaPackage;
    }

    @Override
    public String getJavaName()
    {
        return javaName;
    }

    @Override
    public int hashCode()
    {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((fields == null) ? 0 : fields.hashCode());
        result = prime * result + ((javaName == null) ? 0 : javaName.hashCode());
        result = prime * result + ((javaPackage == null) ? 0 : javaPackage.hashCode());
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj)
    {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final StructContext other = (StructContext) obj;
        if (fields == null) {
            if (other.fields != null) {
                return false;
            }
        }
        else if (!fields.equals(other.fields)) {
            return false;
        }
        if (javaName == null) {
            if (other.javaName != null) {
                return false;
            }
        }
        else if (!javaName.equals(other.javaName)) {
            return false;
        }
        if (javaPackage == null) {
            if (other.javaPackage != null) {
                return false;
            }
        }
        else if (!javaPackage.equals(other.javaPackage)) {
            return false;
        }
        if (name == null) {
            if (other.name != null) {
                return false;
            }
        }
        else if (!name.equals(other.name)) {
            return false;
        }
        return true;
    }

    @Override
    public String toString()
    {
        return "StructContext [name=" + name + ", javaPackage=" + javaPackage + ", javaName=" + javaName + ", fields=" + fields + "]";
    }
}