play.modules.gtengineplugin.gt_integration.GTPreCompiler1xImpl Maven / Gradle / Ivy

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package play.modules.gtengineplugin.gt_integration;

import play.template2.GTGroovyBase;
import play.template2.GTJavaBase;
import play.template2.GTTemplateRepo;
import play.template2.compile.GTPreCompiler;
import play.template2.legacy.GTLegacyFastTagResolver;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class GTPreCompiler1xImpl extends GTPreCompiler {
    private final GTLegacyFastTagResolver legacyFastTagResolver = new GTLegacyFastTagResolver1X();

    public GTPreCompiler1xImpl(GTTemplateRepo templateRepo) {
        super(templateRepo, new GTFastTagResolver1x());
    }


    // must modify all use of @{} in tag args
    @Override
    protected String checkAndPatchActionStringsInTagArguments(String tagArgs) {
        // We only have to try to replace the following if we find at least one
        // @ in tagArgs..
        if (tagArgs.indexOf('@')>=0) {
            tagArgs = tagArgs.replaceAll("[:]\\s*[@]{2}", ":actionBridge._abs().");
            tagArgs = tagArgs.replaceAll("(\\s)[@]{2}", "$1actionBridge._abs().");
            tagArgs = tagArgs.replaceAll("[:]\\s*[@]", ":actionBridge.");
            tagArgs = tagArgs.replaceAll("(\\s)[@]", "$1actionBridge.");
        }
        return tagArgs;
    }

    static final Pattern staticFileP = Pattern.compile("^'(.*)'$");

    @Override
    protected GTFragmentCode generateRegularActionPrinter(boolean absolute, String action, SourceContext sc, int lineNo) {

        String code;
        Matcher m = staticFileP.matcher(action.trim());
        if (m.find()) {
            // This is an action/link to a static file.
            action = m.group(1); // without ''
            code = " out.append(__reverseWithCheck(\""+action+"\", "+absolute+"));\n";
        } else {
            if (!action.endsWith(")")) {
                action = action + "()";
            }

            // actionBridge is a special groovy object that will be an object present in the groovy runtime.
            // we must create a groovy method that execute this special groovy actionBridge-hack code, then
            // we return the java code snippet that will get the result from the groovy method, then print the result

            // generate groovy code
            String groovyMethodName = "action_resolver_" + (sc.nextMethodIndex++);

            sc.gprintln(" String " + groovyMethodName + "() {", lineNo);
            if (absolute) {
                sc.gprintln(" return actionBridge._abs()." + action + ";");
            } else {
                sc.gprintln(" return actionBridge." + action + ";");
            }
            sc.gprintln(" }");

            // generate java code that prints it
            code = " out.append(g."+groovyMethodName+"());";
        }

        return new GTFragmentCode(lineNo, code);
    }

    @Override
    public Class getGroovyBaseClass() {
        return GTGroovyBase1xImpl.class;
    }

    @Override
    public Class getJavaBaseClass() {
        return GTJavaBase1xImpl.class;
    }

    @Override
    public GTLegacyFastTagResolver getGTLegacyFastTagResolver() {
        return legacyFastTagResolver;
    }
}