Example usage for org.objectweb.asm.tree.analysis SimpleVerifier setClassLoader

Introduction

In this page you can find the example usage for org.objectweb.asm.tree.analysis SimpleVerifier setClassLoader.

Prototype

public void setClassLoader(final ClassLoader loader) 

Source Link

Document

Sets the ClassLoader to be used in #getClass .

Usage

From source file:org.ballerinalang.compiler.backend.jvm.ClassVerifier.java

License:Open Source License

/**
 * This method is an extension of/*from w  ww. j  a  va  2  s .  c o  m*/
 * {@code jdk.internal.org.objectweb.asm.util.CheckClassAdapter#verify(ClassReader, boolean, java.io.PrintWriter)}.
 * 
 * @param bytes Bytes stream of the class to be verified.
 * @return An optional error, if there are verification errors.
 */
private static Optional<ErrorValue> verify(byte[] bytes, ClassLoader classLoader) {
    ClassReader classReader = new ClassReader(bytes);
    ClassNode classNode = new ClassNode();
    classReader.accept(new CheckClassAdapter(Opcodes.ASM7, classNode, false) {
    }, ClassReader.SKIP_DEBUG);

    Type syperType = classNode.superName == null ? null : Type.getObjectType(classNode.superName);
    List<MethodNode> methods = classNode.methods;

    List<Type> interfaces = new ArrayList<>();
    for (String interfaceName : classNode.interfaces) {
        interfaces.add(Type.getObjectType(interfaceName));
    }

    for (MethodNode method : methods) {
        SimpleVerifier verifier = new SimpleVerifier(Type.getObjectType(classNode.name), syperType, interfaces,
                (classNode.access & Opcodes.ACC_INTERFACE) != 0);
        Analyzer<BasicValue> analyzer = new Analyzer<>(verifier);
        if (classLoader != null) {
            verifier.setClassLoader(classLoader);
        }
        try {
            analyzer.analyze(classNode.name, method);
        } catch (AnalyzerException e) {
            return Optional.of(BallerinaErrors.createError(e.getMessage()));
        }
    }

    return Optional.empty();
}

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