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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.javawriter.builders;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.squareup.javawriter.ClassName;
import com.squareup.javawriter.TypeName;
import com.squareup.javawriter.VoidName;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.lang.model.element.Modifier;
import static com.google.common.base.Preconditions.checkNotNull;
/** A generated method declaration. */
public final class MethodSpec {
public final Name name;
public final ImmutableList<ClassName> annotations;
public final ImmutableList<ParameterSpec> parameters;
public final ImmutableSet<Modifier> modifiers;
public final TypeName returnType;
public final ImmutableList<Snippet> snippets;
private MethodSpec(Builder builder) {
this.name = checkNotNull(builder.name);
this.annotations = ImmutableList.copyOf(builder.annotations);
this.parameters = ImmutableList.copyOf(builder.parameters);
this.modifiers = ImmutableSet.copyOf(builder.modifiers);
this.returnType = builder.returnType;
this.snippets = ImmutableList.copyOf(builder.snippets);
}
void emit(CodeWriter codeWriter) {
codeWriter.emit("$T $L(", returnType, name); // TODO(jwilson): modifiers.
boolean firstParameter = true;
for (ParameterSpec parameterSpec : parameters) {
if (!firstParameter) codeWriter.emit(", ");
codeWriter.emit("$T $L", parameterSpec.type, parameterSpec.name);
firstParameter = false;
}
codeWriter.emit(") {\n");
codeWriter.indent();
for (Snippet snippet : snippets) {
codeWriter.emit(snippet);
}
codeWriter.unindent();
codeWriter.emit("}\n");
}
public static final class Builder {
private Name name;
private List<ClassName> annotations = new ArrayList<>();
private List<ParameterSpec> parameters = new ArrayList<>();
private List<Modifier> modifiers = new ArrayList<>();
private TypeName returnType = VoidName.VOID;
private List<Snippet> snippets = new ArrayList<>();
public Builder name(String name) {
this.name = new Name(name);
return this;
}
public Builder name(Name name) {
this.name = name;
return this;
}
public Builder addAnnotation(Class<? extends Annotation> annotation) {
this.annotations.add(ClassName.fromClass(annotation));
return this;
}
public Builder addParameter(ParameterSpec parameterSpec) {
this.parameters.add(parameterSpec);
return this;
}
public Builder addParameter(Class<?> type, String name) {
this.parameters.add(new ParameterSpec.Builder().type(type).name(name).build());
return this;
}
public Builder addModifiers(Modifier... modifiers) {
this.modifiers.addAll(Arrays.asList(modifiers));
return this;
}
public Builder returns(Class<?> returnType) {
this.returnType = ClassName.fromClass(returnType);
return this;
}
public Builder addCode(String format, Object... args) {
snippets.add(new Snippet(format, args));
return this;
}
public MethodSpec build() {
return new MethodSpec(this);
}
}
}
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