Example usage for com.google.gwt.dev.asm.signature SignatureReader SignatureReader

Introduction

In this page you can find the example usage for com.google.gwt.dev.asm.signature SignatureReader SignatureReader.

Prototype

public SignatureReader(final String signature) 

Source Link

Document

Constructs a SignatureReader for the given signature.

Usage

From source file:com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.java

License:Apache License

/**
 * Examines a generic RequestContext method declaration and determines the
 * expected domain return type. This implementation is limited in that it will
 * not attempt to resolve type bounds since that would essentially require
 * implementing TypeOracle. In the case where the type bound cannot be
 * resolved, this method will return Object's type.
 *///ww w.  j  av  a2 s . com
private Type getReturnType(ErrorContext logger, RFMethod method) {
    logger = logger.setMethod(method);
    final String[] returnType = { objectType.getInternalName() };
    String signature = method.getSignature();

    final int expectedCount;
    if (method.getReturnType().equals(instanceRequestIntf)) {
        expectedCount = 2;
    } else if (method.getReturnType().equals(requestIntf)) {
        expectedCount = 1;
    } else {
        logger.spam("Punting on " + signature);
        return Type.getObjectType(returnType[0]);
    }

    // TODO(bobv): If a class-based TypeOracle is built, use that instead
    new SignatureReader(signature).accept(new SignatureAdapter() {
        @Override
        public SignatureVisitor visitReturnType() {
            return new SignatureAdapter() {
                int count;

                @Override
                public SignatureVisitor visitTypeArgument(char wildcard) {
                    if (++count == expectedCount) {
                        return new SignatureAdapter() {
                            @Override
                            public void visitClassType(String name) {
                                returnType[0] = name;
                            }
                        };
                    }
                    return super.visitTypeArgument(wildcard);
                }
            };
        }
    });

    logger.spam("Extracted " + returnType[0]);
    return Type.getObjectType(returnType[0]);
}

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From source file:com.google.web.bindery.requestfactory.server.RequestFactoryInterfaceValidator.java

License:Apache License

/**
 * Examine the arguments and return value of a method and check any
 * EntityProxies referred./*  w  w w  .  jav a  2  s  . co m*/
 */
private void maybeCheckReferredProxies(ErrorContext logger, RFMethod method) {
    if (method.getSignature() != null) {
        TypesInSignatureCollector collector = new TypesInSignatureCollector();
        SignatureReader reader = new SignatureReader(method.getSignature());
        reader.accept(collector);
        maybeCheckProxyType(logger, collector.getFound());
    } else {
        Type[] argTypes = method.getArgumentTypes();
        Type returnType = getReturnType(logger, method);

        // Check EntityProxy args ond return types against the domain
        maybeCheckProxyType(logger, argTypes);
        maybeCheckProxyType(logger, returnType);
    }
}

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