ReflectionFunctionAbstract.java

package php.runtime.ext.core.reflection;

import php.runtime.Memory;
import php.runtime.env.Environment;
import php.runtime.ext.support.Extension;
import php.runtime.lang.Closure;
import php.runtime.lang.IObject;
import php.runtime.memory.LongMemory;
import php.runtime.memory.ObjectMemory;
import php.runtime.memory.StringMemory;
import php.runtime.reflection.ClassEntity;
import php.runtime.reflection.CompileFunctionEntity;
import php.runtime.reflection.ParameterEntity;
import php.runtime.reflection.helper.ClosureEntity;
import php.runtime.reflection.support.AbstractFunctionEntity;

import static php.runtime.annotation.Reflection.Signature;

abstract public class ReflectionFunctionAbstract extends Reflection {

    public ReflectionFunctionAbstract(Environment env, ClassEntity clazz) {
        super(env, clazz);
    }

    public ReflectionFunctionAbstract(Environment env) {
        super(env);
    }

    protected IObject getInstance() { return null; }
    abstract protected AbstractFunctionEntity getEntity();
    protected ClosureEntity getClosureEntity() { return null; }

    @Signature
    public Memory getClosureScopeClass(Environment env, Memory... args){
        IObject instance = getInstance();
        if (instance == null || !(instance instanceof Closure))
            return Memory.NULL;
        else {
            // todo: change to ReflectionClass
            return new StringMemory(((Closure) instance).getScope());
        }
    }

    @Signature
    public Memory getClosureThis(Environment env, Memory... args){
        IObject instance = getInstance();
        if (instance == null || !(instance instanceof Closure))
            return Memory.NULL;
        else {
            return ((Closure) instance).getSelf();
        }
    }

    @Signature
    public Memory getDocComment(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.NULL;
        if (getEntity().getDocComment() == null)
            return Memory.NULL;

        return new StringMemory(getEntity().getDocComment().toString());
    }

    @Signature
    public Memory getEndLine(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return LongMemory.valueOf(getClosureEntity().getTrace().getEndLine());
        return LongMemory.valueOf(getEntity().getTrace().getEndLine());
    }

    @Signature
    public Memory getExtension(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.NULL;

        Extension extension = getEntity().getExtension();
        if (extension == null)
            return Memory.NULL;
        else {
            ReflectionExtension ext = new ReflectionExtension(env, env.fetchClass("ReflectionExtension"));
            ext.setExtension(extension);
            return new ObjectMemory(ext);
        }
    }

    @Signature
    public Memory getExtensionName(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.FALSE;

        Extension extension = getEntity().getExtension();
        if (extension == null)
            return Memory.FALSE;
        else
            return new StringMemory(extension.getName());
    }

    @Signature
    public Memory getFileName(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return new StringMemory(getClosureEntity().getTrace().getFileName());
        return new StringMemory(getEntity().getTrace().getFileName());
    }

    @Signature
    public Memory getName(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.FALSE;
        return new StringMemory(getEntity().getName());
    }

    @Signature
    public Memory getNamespaceName(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.FALSE;
        return new StringMemory(getEntity().getNamespaceName());
    }

    @Signature
    public Memory getNumberOfParameters(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return LongMemory.valueOf(getClosureEntity().parameters.length);
        return LongMemory.valueOf(getEntity().getParameters().length);
    }

    @Signature
    public Memory getNumberOfRequiredParameters(Environment env, Memory... args){
        int cnt = 0;
        ParameterEntity[] parameterEntities = getClosureEntity() == null
                ? getEntity().getParameters() : getClosureEntity().parameters;

        for(ParameterEntity e : parameterEntities){
            if (e.getDefaultValue() == null)
                cnt++;
        }
        return LongMemory.valueOf(cnt);
    }

    @Signature
    public Memory getShortName(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.NULL;
        return new StringMemory(getEntity().getShortName());
    }

    @Signature
    public Memory getStartLine(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return LongMemory.valueOf(getClosureEntity().getTrace().getStartLine() + 1);
        return LongMemory.valueOf(getEntity().getTrace().getStartLine() + 1);
    }

    @Signature
    public Memory getPosition(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return LongMemory.valueOf(getClosureEntity().getTrace().getStartPosition() + 1);
        return LongMemory.valueOf(getEntity().getTrace().getStartPosition() + 1);
    }

    @Signature
    public Memory getStaticVariables(Environment env, Memory... args) {
        return Memory.FALSE;
    }

    @Signature
    public Memory inNamespace(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.FALSE;
        return getEntity().getNamespaceName().isEmpty() ? Memory.FALSE : Memory.TRUE;
    }

    @Signature
    public Memory isClosure(Environment env, Memory... args){
        return getClosureEntity() != null ? Memory.TRUE : Memory.FALSE;
    }

    @Signature
    public Memory isDeprecated(Environment env, Memory... args){
        if (getClosureEntity() != null)
            return Memory.FALSE;
        return getEntity().isDeprecated() ? Memory.TRUE : Memory.FALSE;
    }

    @Signature
    public Memory isInternal(Environment env, Memory... args){
        return getEntity() instanceof CompileFunctionEntity ? Memory.TRUE : Memory.FALSE;
    }

    @Signature
    public Memory isUserDefined(Environment env, Memory... args){
        return getEntity() instanceof CompileFunctionEntity ? Memory.FALSE : Memory.TRUE;
    }

    @Signature
    public Memory returnsReference(Environment env, Memory... args) {
        if (getClosureEntity() != null)
            return getClosureEntity().isReturnReference() ? Memory.TRUE : Memory.FALSE;
        return getEntity().isReturnReference() ? Memory.TRUE : Memory.FALSE;
    }

    @Signature
    abstract public Memory getParameters(Environment env, Memory... args);
}