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/*
* Copyright (C) 2015 Square, 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.squareup.javapoet;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import java.io.IOException;
import java.io.StringWriter;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.Modifier;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
/** A generated parameter declaration. */
public final class ParameterSpec {
public final String name;
public final ImmutableList<AnnotationSpec> annotations;
public final ImmutableSet<Modifier> modifiers;
public final Type type;
private ParameterSpec(Builder builder) {
this.name = checkNotNull(builder.name, "name == null");
this.annotations = ImmutableList.copyOf(builder.annotations);
this.modifiers = ImmutableSet.copyOf(builder.modifiers);
this.type = checkNotNull(builder.type, "type == null");
}
public boolean hasModifier(Modifier modifier) {
return modifiers.contains(modifier);
}
void emit(CodeWriter codeWriter, boolean varargs) throws IOException {
codeWriter.emitAnnotations(annotations, true);
codeWriter.emitModifiers(modifiers);
if (varargs) {
codeWriter.emit("$T... $L", Types.arrayComponent(type), name);
} else {
codeWriter.emit("$T $L", type, name);
}
}
@Override public String toString() {
StringWriter out = new StringWriter();
try {
CodeWriter codeWriter = new CodeWriter(out);
emit(codeWriter, false);
return out.toString();
} catch (IOException e) {
throw new AssertionError();
}
}
public static Builder builder(Type type, String name, Modifier... modifiers) {
checkNotNull(type, "type == null");
checkArgument(SourceVersion.isName(name), "not a valid name: %s", name);
return new Builder(type, name)
.addModifiers(modifiers);
}
public static final class Builder {
private final Type type;
private final String name;
private final List<AnnotationSpec> annotations = new ArrayList<>();
private final List<Modifier> modifiers = new ArrayList<>();
private Builder(Type type, String name) {
this.type = type;
this.name = name;
}
public Builder addAnnotation(AnnotationSpec annotationSpec) {
this.annotations.add(annotationSpec);
return this;
}
public Builder addAnnotation(Type annotation) {
this.annotations.add(AnnotationSpec.builder(annotation).build());
return this;
}
public Builder addModifiers(Modifier... modifiers) {
Collections.addAll(this.modifiers, modifiers);
return this;
}
public ParameterSpec build() {
return new ParameterSpec(this);
}
}
}
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