Examples with FieldRef com.google.template.soy.jbcsrc.restricted.FieldRef used on opensource projects

Example 1 with FieldRef

use of com.google.template.soy.jbcsrc.restricted.FieldRef in project closure-templates by google.

the class SoyNodeCompiler method renderCallNode.

/**
 * Renders a {@link com.google.template.soy.jbcsrc.shared.CompiledTemplate} incrementally.
 *
 * <p>Similar to {@link #renderIncrementally(Expression, List, Label)}, we need to:
 *
 * <ul>
 *   <li>Stash the CompiledTemplate in a field {@code $currentCallee}, so that if we detach
 *       halfway through rendering we don't lose the value. Note, we could use the scope/variable
 *       system of {@link TemplateVariableManager} to manage this value, but we know there will
 *       only ever be 1 live at a time, so we can just manage the single special field ourselves.
 *   <li>Either apply all the streaming autoescapers to the current appendable and, stash it in
 *       the {@code $currentAppendable} field for the same reasons as above, or call {@link
 *       JbcSrcRuntime#applyEscapers} to apply non-streaming print directives.
 *   <li>Invoke {@link com.google.template.soy.jbcsrc.shared.CompiledTemplate#render} with the
 *       standard detach logic.
 *   <li>Clear the two fields once rendering is complete.
 * </ul>
 *
 * @param parametersReattachPoint The label where execution should resume if we need to detach
 *     while calculating parameters.
 * @param node The call node
 * @param calleeExpression The expression that resolves to a constructed instance of the template
 * @return A statement rendering the template.
 */
private Statement renderCallNode(Label parametersReattachPoint, CallNode node, Expression calleeExpression) {
    Statement initAppendable = Statement.NULL_STATEMENT;
    Statement clearAppendable = Statement.NULL_STATEMENT;
    Expression appendable;
    FieldRef currentCalleeField = variables.getCurrentCalleeField();
    // CallDelegateNodes because there is no guarantee that we can tell what the kind is.
    if (!areAllPrintDirectivesStreamable(node)) {
        calleeExpression = MethodRef.RUNTIME_APPLY_ESCAPERS.invoke(calleeExpression, getEscapingDirectivesList(node));
        appendable = appendableExpression;
    } else {
        AppendableAndOptions wrappedAppendable = applyStreamingEscapingDirectives(node.getEscapingDirectives(), appendableExpression, parameterLookup.getRenderContext(), variables);
        FieldRef currentAppendableField = variables.getCurrentAppendable();
        initAppendable = currentAppendableField.putInstanceField(thisVar, wrappedAppendable.appendable());
        appendable = currentAppendableField.accessor(thisVar);
        clearAppendable = currentAppendableField.putInstanceField(thisVar, constantNull(LOGGING_ADVISING_APPENDABLE_TYPE));
        if (wrappedAppendable.closeable()) {
            // make sure to call close before clearing
            clearAppendable = Statement.concat(// LoggingAdvisingAppendable
            currentAppendableField.accessor(thisVar).checkedCast(BytecodeUtils.CLOSEABLE_TYPE).invokeVoid(MethodRef.CLOSEABLE_CLOSE), clearAppendable);
        }
    }
    Statement initCallee = currentCalleeField.putInstanceField(thisVar, calleeExpression).labelStart(parametersReattachPoint);
    Expression callRender = currentCalleeField.accessor(thisVar).invoke(MethodRef.COMPILED_TEMPLATE_RENDER, appendable, parameterLookup.getRenderContext());
    Statement callCallee = detachState.detachForRender(callRender);
    Statement clearCallee = currentCalleeField.putInstanceField(thisVar, BytecodeUtils.constantNull(COMPILED_TEMPLATE_TYPE));
    return Statement.concat(initAppendable, initCallee, callCallee, clearCallee, clearAppendable);
}

Example 2 with FieldRef

use of com.google.template.soy.jbcsrc.restricted.FieldRef in project closure-templates by google.

the class SoyNodeCompiler method renderIncrementally.

/**
 * Renders a {@link SoyValueProvider} incrementally via {@link SoyValueProvider#renderAndResolve}
 *
 * <p>The strategy is to:
 *
 * <ul>
 *   <li>Stash the SoyValueProvider in a field {@code $currentRenderee}, so that if we detach
 *       halfway through rendering we don't lose the value. Note, we could use the scope/variable
 *       system of {@link TemplateVariableManager} to manage this value, but we know there will
 *       only ever be 1 live at a time, so we can just manage the single special field ourselves.
 *   <li>Apply all the streaming autoescapers to the current appendable. Also, stash it in the
 *       {@code $currentAppendable} field for the same reasons as above.
 *   <li>Invoke {@link SoyValueProvider#renderAndResolve} with the standard detach logic.
 *   <li>Clear the two fields once rendering is complete.
 * </ul>
 *
 * <p>TODO(lukes): if the expression is a param, then this is kind of silly since it looks like
 *
 * <pre>{@code
 * SoyValueProvider localParam = this.param;
 * this.currentRenderee = localParam;
 * SoyValueProvider localRenderee = this.currentRenderee;
 * localRenderee.renderAndResolve();
 * }</pre>
 *
 * <p>In this case we could elide the currentRenderee altogether if we knew the soyValueProvider
 * expression was just a field read... And this is the _common_case for .renderAndResolve calls.
 * to actually do this we could add a mechanism similar to the SaveStrategy enum for expressions,
 * kind of like {@link Expression#isCheap()} which isn't that useful in practice.
 *
 * @param soyValueProvider The value to render incrementally
 * @param directives The streaming print directives applied to the expression
 * @param reattachPoint The point where execution should resume if the soyValueProvider detaches
 *     while being evaluated.
 * @return a statement for the full render.
 */
private Statement renderIncrementally(Expression soyValueProvider, List<PrintDirectiveNode> directives, Label reattachPoint) {
    // In this case we want to render the SoyValueProvider via renderAndResolve which will
    // enable incremental rendering of parameters for lazy transclusions!
    // This actually ends up looking a lot like how calls work so we use the same strategy.
    FieldRef currentRendereeField = variables.getCurrentRenderee();
    Statement initRenderee = currentRendereeField.putInstanceField(thisVar, soyValueProvider).labelStart(reattachPoint);
    Statement clearRenderee = currentRendereeField.putInstanceField(thisVar, constantNull(SOY_VALUE_PROVIDER_TYPE));
    // TODO(lukes): we should have similar logic for calls and message escaping
    Statement initAppendable = Statement.NULL_STATEMENT;
    Statement clearAppendable = Statement.NULL_STATEMENT;
    Expression appendable = appendableExpression;
    if (!directives.isEmpty()) {
        Label printDirectiveArgumentReattachPoint = new Label();
        AppendableAndOptions wrappedAppendable = applyStreamingPrintDirectives(directives, appendable, exprCompiler.asBasicCompiler(printDirectiveArgumentReattachPoint), parameterLookup.getRenderContext(), variables);
        FieldRef currentAppendableField = variables.getCurrentAppendable();
        initAppendable = currentAppendableField.putInstanceField(thisVar, wrappedAppendable.appendable()).labelStart(printDirectiveArgumentReattachPoint);
        appendable = currentAppendableField.accessor(thisVar);
        clearAppendable = currentAppendableField.putInstanceField(thisVar, constantNull(LOGGING_ADVISING_APPENDABLE_TYPE));
        if (wrappedAppendable.closeable()) {
            // make sure to call close before clearing
            clearAppendable = Statement.concat(// LoggingAdvisingAppendable
            currentAppendableField.accessor(thisVar).checkedCast(BytecodeUtils.CLOSEABLE_TYPE).invokeVoid(MethodRef.CLOSEABLE_CLOSE), clearAppendable);
        }
    }
    Expression callRenderAndResolve = currentRendereeField.accessor(thisVar).invoke(MethodRef.SOY_VALUE_PROVIDER_RENDER_AND_RESOLVE, appendable, // TODO(lukes): pass a real value here when we have expression use analysis.
    constant(false));
    Statement doCall = detachState.detachForRender(callRenderAndResolve);
    return Statement.concat(initRenderee, initAppendable, doCall, clearAppendable, clearRenderee);
}

Example 3 with FieldRef

use of com.google.template.soy.jbcsrc.restricted.FieldRef in project closure-templates by google.

the class TemplateVariableManager method addStaticField.

@Override
public FieldRef addStaticField(String proposedName, Expression initializer) {
    String name = fieldNames.generateName(proposedName);
    FieldRef ref = FieldRef.create(owner, name, initializer.resultType(), Opcodes.ACC_STATIC | Opcodes.ACC_FINAL | Opcodes.ACC_PRIVATE, !initializer.isNonNullable());
    staticFields.add(new AutoValue_TemplateVariableManager_StaticFieldVariable(ref, initializer));
    return ref;
}

Example 4 with FieldRef

use of com.google.template.soy.jbcsrc.restricted.FieldRef in project closure-templates by google.

the class TemplateCompiler method compile.

/**
 * Returns the list of classes needed to implement this template.
 *
 * <p>For each template, we generate:
 *
 * <ul>
 *   <li>A {@link com.google.template.soy.jbcsrc.shared.CompiledTemplate.Factory}
 *   <li>A {@link CompiledTemplate}
 *   <li>A DetachableSoyValueProvider subclass for each {@link LetValueNode} and {@link
 *       CallParamValueNode}
 *   <li>A DetachableContentProvider subclass for each {@link LetContentNode} and {@link
 *       CallParamContentNode}
 *       <p>Note: This will <em>not</em> generate classes for other templates, only the template
 *       configured in the constructor. But it will generate classes that <em>reference</em> the
 *       classes that are generated for other templates. It is the callers responsibility to
 *       ensure that all referenced templates are generated and available in the classloader that
 *       ultimately loads the returned classes.
 */
Iterable<ClassData> compile() {
    List<ClassData> classes = new ArrayList<>();
    // first generate the factory
    if (template.node().getVisibility() != Visibility.PRIVATE) {
        // Don't generate factory if the template is private.  The factories are only
        // useful to instantiate templates for calls from java.  Soy->Soy calls should invoke
        // constructors directly.
        new TemplateFactoryCompiler(template, innerClasses).compile();
    }
    writer = SoyClassWriter.builder(template.typeInfo()).setAccess(Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER + Opcodes.ACC_FINAL).implementing(TEMPLATE_TYPE).sourceFileName(template.node().getSourceLocation().getFileName()).build();
    generateTemplateMetadata();
    generateKindMethod();
    stateField.defineField(writer);
    paramsField.defineField(writer);
    ijField.defineField(writer);
    for (FieldRef field : paramFields.values()) {
        field.defineField(writer);
    }
    Statement fieldInitializers = generateRenderMethod();
    generateConstructor(fieldInitializers);
    innerClasses.registerAllInnerClasses(writer);
    writer.visitEnd();
    classes.add(writer.toClassData());
    classes.addAll(innerClasses.getInnerClassData());
    writer = null;
    return classes;
}