RequestBuilderGenerator.java 文件源码

/**
 * Generates a particular method with  an equivalent name and arguments to the given method
 * from the generated {@link com.bumptech.glide.request.BaseRequestBuilder} subclass.
 */
private MethodSpec generateGeneratedRequestOptionEquivalent(MethodSpec requestOptionMethod) {
  CodeBlock callRequestOptionsMethod = CodeBlock.builder()
      .add(".$N(", requestOptionMethod.name)
      .add(FluentIterable.from(requestOptionMethod.parameters)
          .transform(new Function<ParameterSpec, String>() {
            @Override
            public String apply(ParameterSpec input) {
              return input.name;
            }
          })
          .join(Joiner.on(", ")))
      .add(");\n")
      .build();

  return MethodSpec.methodBuilder(requestOptionMethod.name)
      .addJavadoc(
          processorUtil.generateSeeMethodJavadoc(requestOptionsClassName, requestOptionMethod))
      .addModifiers(Modifier.PUBLIC)
      .addTypeVariables(requestOptionMethod.typeVariables)
      .addParameters(requestOptionMethod.parameters)
      .returns(generatedRequestBuilderOfTranscodeType)
      .beginControlFlow(
          "if (getMutableOptions() instanceof $T)", requestOptionsClassName)
      .addCode("this.requestOptions = (($T) getMutableOptions())",
          requestOptionsClassName)
      .addCode(callRequestOptionsMethod)
      .nextControlFlow("else")
      .addCode(CodeBlock.of("this.requestOptions = new $T().apply(this.requestOptions)",
          requestOptionsClassName))
      .addCode(callRequestOptionsMethod)
      .endControlFlow()
      .addStatement("return this")
      .build();
}