proxygenerator.java

Jamon是一个Java文本模板引擎

        m_writer.println("  throws " + ClassNames.IOEXCEPTION);
        m_writer.openBlock();
        if (m_templateUnit.getRenderArgs().hasNext())
        {
            m_writer.println(
                "ImplData"
                + m_templateUnit.getGenericParams().generateGenericParamsList()
                + " implData = getImplData();");
            for (Iterator<AbstractArgument> i = m_templateUnit.getRenderArgs();
                 i.hasNext(); )
            {
                AbstractArgument arg = i.next();
                m_writer.println("implData." + arg.getSetterName()
                                 + "(" + arg.getName() + ");");
            }
        }
        if (m_templateUnit.getGenericParams().getCount() > 0) {
            m_writer.print("@SuppressWarnings(\"unchecked\") ");
        }
        m_writer.println(
            "Intf instance = (Intf) getTemplateManager().constructImpl(this);"
            );

        m_writer.println("instance.renderNoFlush(" + ArgNames.WRITER + ");");
        m_writer.println("reset();");
        m_writer.closeBlock();
        m_writer.println();
    }

    private void generateMakeRenderer()
    {
        m_writer.print("public " + ClassNames.RENDERER + " makeRenderer");
        m_writer.openList();
        m_templateUnit.printRenderArgsDecl(m_writer);
        m_writer.closeList();
        m_writer.println();

        m_writer.openBlock();
        m_writer.print(  "return new " + ClassNames.ABSTRACT_RENDERER + "() ");
        m_writer.openBlock();
        m_writer.println("@Override");
        m_writer.println("public void renderTo(" + ArgNames.WRITER_DECL + ")");
        m_writer.println(  "  throws " + ClassNames.IOEXCEPTION);
        m_writer.openBlock();
        m_writer.print("render");
        m_writer.openList();
        m_writer.printListElement(ArgNames.WRITER);
        m_templateUnit.printRenderArgs(m_writer);
        m_writer.closeList();
        m_writer.println(";");
        m_writer.closeBlock();
        m_writer.closeBlock(";");
        m_writer.closeBlock();
        m_writer.println();
    }

    private void generateImplData()
    {
        m_templateUnit.getGenericParams()
            .suppressGenericHidingWarnings(m_writer);
        m_writer.println(
            "protected static class ImplData"
            + m_templateUnit.getGenericParams().generateGenericsDeclaration());
        m_writer.print("  extends ");
        if(m_templateUnit.hasParentPath())
        {
            m_writer.println(PathUtils.getFullyQualifiedIntfClassName(
                m_templateUnit.getParentPath())
                             + ".ImplData");
        }
        else
        {
            m_writer.println(ClassNames.IMPL_DATA);
        }
        m_writer.openBlock();
        if (m_templateUnit.isOriginatingJamonContext())
        {
            m_writer.println(
                "private " + m_templateUnit.getJamonContextType()
                + " m_jamonContext;");
            m_writer.println(
                "public " + m_templateUnit.getJamonContextType()
                + " getJamonContext()");
            m_writer.openBlock();
            m_writer.println("return m_jamonContext;");
            m_writer.closeBlock();
            m_writer.println(
                "public void setJamonContext("
                + m_templateUnit.getJamonContextType() + " p_jamonContext)");
            m_writer.openBlock();
            m_writer.println("m_jamonContext = p_jamonContext;");
            m_writer.closeBlock();
        }
        for (Iterator<AbstractArgument> i = m_templateUnit.getDeclaredArgs();
             i.hasNext(); )
        {
            i.next().generateImplDataCode(m_writer);
        }
        m_writer.closeBlock();


        if (! m_templateUnit.isParent())
        {
            m_writer.println("@Override");
            m_writer.println(
                "protected ImplData"
                + m_templateUnit.getGenericParams().generateGenericParamsList()
                + " makeImplData()");
            m_writer.openBlock();
            m_writer.println(
                "return new ImplData"
                + m_templateUnit.getGenericParams().generateGenericParamsList()
                             + "();");
            m_writer.closeBlock();
        }

        m_writer.println(
            "@Override @SuppressWarnings(\"unchecked\") protected ImplData"
            + m_templateUnit.getGenericParams().generateGenericParamsList()
            + " getImplData()");
        m_writer.openBlock();
        m_writer.println(
            "return (ImplData"
            + m_templateUnit.getGenericParams().generateGenericParamsList()
            + ") super.getImplData();");
        m_writer.closeBlock();
    }

    private void generateJamonContextSetter()
    {
        m_writer.println();
        if (! m_templateUnit.isOriginatingJamonContext())
        {
            m_writer.print("@Override ");
        }
        m_writer.print("public " );
        printFullProxyType();
        m_writer.println(
            " setJamonContext(" + m_templateUnit.getJamonContextType()
            + " p_jamonContext)");
        m_writer.openBlock();
        m_writer.println("getImplData().setJamonContext(p_jamonContext);");
        m_writer.println("return this;");
        m_writer.closeBlock();
    }

    private void generateOptionalArgs()
    {
        for (Iterator<OptionalArgument> i =
                m_templateUnit.getDeclaredOptionalArgs();
             i.hasNext(); )
        {
            OptionalArgument arg = i.next();
            m_writer.println();
            m_writer.println("protected " + arg.getType() + " "
                             + arg.getName() + ";");
            m_writer.print("public final ");
            printFullProxyType();
            m_writer.println(
                " " + arg.getSetterName()
                + "(" + arg.getType() +" p_" + arg.getName() + ")");
            m_writer.openBlock();
            m_writer.println(
                "(" + "getImplData()" + ")."
                + arg.getSetterName() + "(p_" + arg.getName() + ");");
            m_writer.println("return this;");
            m_writer.closeBlock();
        }
    }

    private void printFullProxyType()
    {
        String pkgName = getPackageName();
        if (pkgName.length() > 0)
        {
            m_writer.print(pkgName + ".");
        }
        m_writer.print(getClassName());
        m_writer.print(m_templateUnit.getGenericParams().generateGenericsDeclaration());
    }

    private void generateIntf()
    {
        m_templateUnit.getGenericParams()
            .suppressGenericHidingWarnings(m_writer);
        m_writer.println(
            "protected interface Intf"
            + m_templateUnit.getGenericParams().generateGenericsDeclaration());
        m_writer.print("  extends "
                       + (m_templateUnit.hasParentPath()
                          ? PathUtils.getFullyQualifiedIntfClassName(
                              m_templateUnit.getParentPath()) + ".Intf"
                          : ClassNames.TEMPLATE_INTF));
        m_writer.openBlock();

        generateFragmentInterfaces(true);

        if(! m_templateUnit.isParent())
        {
            m_writer.println("void renderNoFlush(" + ArgNames.WRITER_DECL
                             + ") throws " + ClassNames.IOEXCEPTION + ";");
            m_writer.println();
        }
        m_writer.closeBlock();
    }

    private void generateParentRendererClass()
    {
        m_writer.println("public abstract class ParentRenderer");
        m_writer.openBlock();
        m_writer.println("protected ParentRenderer() {}");

        for (Iterator<OptionalArgument> i =
                m_templateUnit.getSignatureOptionalArgs();
             i.hasNext(); )
        {
            OptionalArgument arg = i.next();
            m_writer.println();
            String name = arg.getName();
            m_writer.print("public final ParentRenderer ");
            m_writer.println(arg.getSetterName()
                             + "(" + arg.getType() +" p_" + name + ")");
            m_writer.openBlock();
            m_writer.println(getClassName() + ".this." + arg.getSetterName()
                             + "(" + "p_" + name + ");");
            m_writer.println("return this;");
            m_writer.closeBlock();
        }

        if (m_templateUnit.getJamonContextType() != null)
        {
            m_writer.print(
                "public final ParentRenderer setJamonContext("
                + m_templateUnit.getJamonContextType()
                + " p_jamonContext)");
            m_writer.openBlock();
            m_writer.println(
                getClassName() + ".this.setJamonContext(p_jamonContext);");
            m_writer.println("return this;");
            m_writer.closeBlock();
        }

        if (! m_templateUnit.hasParentPath())
        {
            m_writer.print("public void render");
            m_writer.openList();
            m_writer.printListElement(ArgNames.WRITER_DECL);
            m_templateUnit.printDeclaredRenderArgsDecl(m_writer);
            m_writer.closeList();
            m_writer.println();
            m_writer.print("  throws " + ClassNames.IOEXCEPTION);
            m_writer.openBlock();
            m_writer.print("renderNoFlush");
            m_writer.openList();
            m_writer.printListElement(ArgNames.WRITER);
            m_templateUnit.printDeclaredRenderArgs(m_writer);
            m_writer.closeList();
            m_writer.println(";");
            m_writer.println(ArgNames.WRITER + ".flush();");
            m_writer.closeBlock();

            m_writer.print("public void renderNoFlush");
            m_writer.openList();
            m_writer.printListElement(ArgNames.WRITER_DECL);
            m_templateUnit.printDeclaredRenderArgsDecl(m_writer);
            m_writer.closeList();
            m_writer.println();
            m_writer.print("  throws " + ClassNames.IOEXCEPTION);
            m_writer.openBlock();
            m_writer.print("renderChild");
            m_writer.openList();
            m_writer.printListElement(ArgNames.WRITER);
            m_templateUnit.printDeclaredRenderArgs(m_writer);
            m_writer.closeList();
            m_writer.println(";");
            m_writer.closeBlock();

            generateMakeRenderer();
        }
        else
        {
            generateMakeParentRenderer();
        }

        m_writer.print("protected abstract void renderChild");
        m_writer.openList();
        m_writer.printListElement(ArgNames.WRITER_DECL);
        m_templateUnit.printRenderArgsDecl(m_writer);
        m_writer.closeList();
        m_writer.println();
        m_writer.println("  throws " + ClassNames.IOEXCEPTION + ";");

        m_writer.closeBlock();
    }

    private void generateMakeParentRenderer()
    {
        String parentRendererClass =
            PathUtils.getFullyQualifiedIntfClassName(
                m_templateUnit.getParentPath()) + ".ParentRenderer";
        m_writer.print("public " + parentRendererClass
                       + " makeParentRenderer");
        m_writer.openList();
        m_templateUnit.printDeclaredRenderArgsDecl(m_writer);
        m_writer.closeList();
        m_writer.println();
        m_writer.openBlock();
        m_writer.print("return new " + parentRendererClass + "() ");
        m_writer.openBlock();
        m_writer.print("@Override protected void renderChild");
        m_writer.openList();
        m_writer.printListElement(ArgNames.WRITER_DECL);
        m_templateUnit.printParentRenderArgsDecl(m_writer);
        m_writer.closeList();
        m_writer.println();
        m_writer.println("  throws " + ClassNames.IOEXCEPTION);
        m_writer.openBlock();
        m_writer.print(PathUtils
                       .getFullyQualifiedIntfClassName(getClassName()));
        if (m_templateUnit.isParent())
        {
            m_writer.print(".ParentRenderer.this.renderChild");
        }
        else
        {
            m_writer.print(".this.renderNoFlush");
        }
        m_writer.openList();
        m_writer.printListElement(ArgNames.WRITER);
        m_templateUnit.printRenderArgs(m_writer);
        m_writer.closeList();
        m_writer.println(";");
        m_writer.closeBlock();
        m_writer.closeBlock(";");
        m_writer.closeBlock();
    }

    private void generateEpilogue()
    {
        m_writer.println();
        m_writer.closeBlock();
    }
}