Example usage for org.eclipse.jdt.internal.compiler.codegen CodeStream aload_0

Introduction

In this page you can find the example usage for org.eclipse.jdt.internal.compiler.codegen CodeStream aload_0.

Prototype

public void aload_0() 

Source Link

Usage

From source file:org.eclipse.objectteams.otdt.internal.core.compiler.ast.PrivateRoleMethodCall.java

License:Open Source License

@Override
public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {
    // manually redirect to synth bridge:
    Expression receiverReference;
    boolean isCallinAccess = false;
    if (RoleTypeBinding.isRoleWithExplicitAnchor(this.actualReceiverType)) {
        // new receiver is the anchor denoting the base role's enclosing team instance:
        ITeamAnchor teamAnchor = ((RoleTypeBinding) this.actualReceiverType)._teamAnchor;
        TypeAnchorReference syntheticReceiver = this.gen.typeAnchorReference(teamAnchor);
        syntheticReceiver.isExpression = true;
        receiverReference = syntheticReceiver;
    } else {/* w w  w.ja va  2s .co  m*/
        isCallinAccess = true;
        // call from inside a otre-dyn callin wrapper: receiver is the current team:
        receiverReference = this.gen.thisReference();
    }
    receiverReference.resolve(currentScope);
    if (this.isCalloutToField)
        // for c-t-f this receiver *replaces* the original receiver,
        // role instance additionally exists as a visible method argument
        this.receiver = receiverReference;
    else
        // for method callout or callin to private *add* the team instance to the front of pushes
        // original role instance receiver will become the first implicit argument
        receiverReference.generateCode(currentScope, codeStream, true/*valueRequired*/);

    if (isCallinAccess) {
        // might need more synthetic args:
        if (this.binding.isStatic()) {
            codeStream.aconst_null(); // first arg in role bridge: (null) role
            codeStream.iconst_0(); // enclosingTeamInstance: dummy value 
            codeStream.aload_0(); // enclosingTeamInstance: team instance
        }
    }
    // directly use the accessor and its declaring class for the invoke instruction:
    this.binding = this.syntheticAccessor;
    this.actualReceiverType = this.syntheticAccessor.declaringClass;
    this.syntheticAccessor = null;
    super.generateCode(currentScope, codeStream, valueRequired);
}

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From source file:org.eclipse.objectteams.otdt.internal.core.compiler.lifting.Lifting.java

License:Open Source License

/**
* API for AbstractMethodDeclaration://from   w  ww.ja  v a 2s  . c o m
*
 *  Create a byte code sequence for a runtime check in a creation method:
 *  R _OT$create_OT$R(B b) {
 *       if (this._OT$cache_OT$R.contains(b))
 *       throw new DuplicateRoleException("R");
 *     // continue regular code.
 *  }
 *
 * Note, the need for this runtime check is detected quite late.
 * At this point it is easier to create the byte code sequence directly,
 * rather the creating AST first.
 */
public static void createDuplicateRoleCheck(CodeStream codeStream, AbstractMethodDeclaration method) {
    MethodBinding binding = method.binding;
    Scope scope = method.scope;

    ReferenceBinding roleType = (ReferenceBinding) binding.returnType;
    String roleName = new String(roleType.readableName());
    // TODO(SH): check why roleType.getRoleModel().getClassPartBinding().roleModel may yield a different result.
    // I think it occured in haeder/stopwatch from smile-CVS.
    //RoleModel role = roleType.getRealClass().roleModel;
    char[] cacheName = LiftingEnvironment.getCacheName(roleType.roleModel.getBoundRootRole());

    ReferenceBinding teamBinding = roleType.enclosingType();//role.getTeamModel().getBinding();
    FieldBinding cache = TypeAnalyzer.findField(teamBinding, cacheName, /*static*/false, /*outer*/false,
            ITranslationStates.STATE_FULL_LIFTING); // generated by this state
    if (cache == null)
        throw new InternalCompilerError("generated cache field not found: " + new String(cacheName)); //$NON-NLS-1$
    ReferenceBinding map = (ReferenceBinding) scope.getType(IOTConstants.WEAK_HASH_MAP, 3);
    MethodBinding contains = map.getMethod(scope, IOTConstants.CONTAINS_KEY);

    ReferenceBinding exc = (ReferenceBinding) scope.getType(IOTConstants.ORG_OBJECTTEAMS_DUPLICATE_ROLE, 3);
    TypeBinding[] types = new TypeBinding[] { scope.getJavaLangString() };
    MethodBinding excInit = exc.getExactConstructor(types);

    BranchLabel normalCase = new BranchLabel(codeStream);

    codeStream.aload_0(); // this
    codeStream.fieldAccess(Opcodes.OPC_getfield, cache, teamBinding); // getfield      MyTeam._OT$cache_OT$R Ljava/util/WeakHashMap;
    codeStream.aload_1(); // arg0
    codeStream.invoke(Opcodes.OPC_invokevirtual, contains, map); // invokevirtual java.util.WeakHashMap.containsKey (Ljava/lang/Object;)Z
    codeStream.ifeq(normalCase); // false -> #endif
    codeStream.new_(exc); // new           <org.objectteams.DuplicateRoleException>
    codeStream.dup(); // dup
    codeStream.ldc(roleName); // ldc "R"
    codeStream.invoke(Opcodes.OPC_invokespecial, excInit, exc); // invokespecial org.objectteams.DuplicateRoleException.<init> (Ljava/lang/String;)V
    codeStream.athrow(); // athrow
    normalCase.place(); // #endif
}

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From source file:org.eclipse.objectteams.otdt.internal.core.compiler.lookup.SyntheticRoleBridgeMethodBinding.java

License:Open Source License

@Override
public void generateInstructions(CodeStream codeStream) {
    TypeBinding[] arguments = this.parameters;
    int argLen = arguments.length;
    TypeBinding[] targetParameters = this.targetMethod.parameters;
    int resolvedPosition = 0;
    int argIdx = 0;
    int targetIdx = 0;
    switch (this.purpose) {
    case RoleMethodBridgeInner:
        codeStream.aload_0(); // synthetic first arg is the receiver role
        codeStream.checkcast(this.targetMethod.declaringClass);
        resolvedPosition = 1; // first arg is processed
        argIdx = 1;/*from ww  w. j a  va 2s. c om*/
        if (this.targetMethod.isStatic()) {
            codeStream.iconst_0(); // dummy int
            codeStream.aload_2(); // pass synth. team arg
            argIdx += 2;
            resolvedPosition += 2;
        }
        break;
    case RoleMethodBridgeOuter:
        resolvedPosition = 1; // ignore team instance at 0
        argIdx = 0; // pass all args unchanged
        break;
    }
    while (argIdx < argLen) {
        TypeBinding parameter = targetParameters[targetIdx++];
        TypeBinding argument = arguments[argIdx++];
        codeStream.load(argument, resolvedPosition);
        if (TypeBinding.notEquals(argument, parameter))
            codeStream.checkcast(parameter);
        switch (parameter.id) {
        case TypeIds.T_long:
        case TypeIds.T_double:
            resolvedPosition += 2;
            break;
        default:
            resolvedPosition++;
            break;
        }
    }
    if (this.targetMethod.isStatic())
        codeStream.invoke(Opcodes.OPC_invokestatic, this.targetMethod, null);
    else
        codeStream.invoke(Opcodes.OPC_invokespecial, this.targetMethod, null); // non-static private role method
    switch (this.targetMethod.returnType.id) {
    case TypeIds.T_void:
        codeStream.return_();
        break;
    case TypeIds.T_boolean:
    case TypeIds.T_byte:
    case TypeIds.T_char:
    case TypeIds.T_short:
    case TypeIds.T_int:
        codeStream.ireturn();
        break;
    case TypeIds.T_long:
        codeStream.lreturn();
        break;
    case TypeIds.T_float:
        codeStream.freturn();
        break;
    case TypeIds.T_double:
        codeStream.dreturn();
        break;
    default:
        codeStream.areturn();
    }
}

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From source file:org.eclipse.objectteams.otdt.internal.core.compiler.statemachine.transformer.RoleMigrationImplementor.java

License:Open Source License

static void genMigrateToTeamInstructions(CodeStream codeStream, SourceTypeBinding roleBinding) {
    // this.this$n = (MyTeam)otherTeam
    codeStream.aload_0(); // this
    codeStream.aload_1(); // otherTeam
    codeStream.checkcast(roleBinding.enclosingType());
    codeStream.fieldAccess(Opcodes.OPC_putfield, enclosingInstanceField(roleBinding), roleBinding);
    codeStream.aload_0();//  w  ww.  j  a v  a2  s  .  c om
    codeStream.areturn();
    // not handling caches here, cf. IProblem.MigrateBoundRole
}

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From source file:org.eclipse.objectteams.otdt.internal.core.compiler.statemachine.transformer.RoleMigrationImplementor.java

License:Open Source License

static void genMigrateToBaseInstructions(CodeStream codeStream, SourceTypeBinding roleBinding, Scope scope,
        char[] cacheName) {
    FieldBinding baseField = roleBinding.getField(IOTConstants._OT_BASE, true);
    // accessing the cache (using remove() and put()):
    ReferenceBinding cacheTypeBinding = (ReferenceBinding) scope.getType(IOTConstants.WEAK_HASH_MAP, 3);
    MethodBinding remove = getMethod(cacheTypeBinding, "remove".toCharArray(), 1); //$NON-NLS-1$
    MethodBinding put = cacheTypeBinding.getMethod(scope, "put".toCharArray()); //$NON-NLS-1$
    // accessing the base object (using _OT$removeRole() and _OT$addRole()):
    WeavingScheme weavingScheme = scope.compilerOptions().weavingScheme;
    ReferenceBinding iboundBase = (ReferenceBinding) scope
            .getType(weavingScheme == WeavingScheme.OTDRE ? IOTConstants.ORG_OBJECTTEAMS_IBOUNDBASE2
                    : IOTConstants.ORG_OBJECTTEAMS_IBOUNDBASE, 3);

    // remove old from cache
    codeStream.aload_0(); // this
    codeStream.fieldAccess(Opcodes.OPC_getfield, enclosingInstanceField(roleBinding), // this.this$n
            roleBinding);// ww  w.j a  v a2s. c om
    codeStream.fieldAccess(Opcodes.OPC_getfield, roleBinding.enclosingType().getField(cacheName, true), // this.this$n._OT$cache$R
            roleBinding.enclosingType());
    codeStream.dup(); // for use in put() below
    codeStream.aload_0(); // this
    codeStream.fieldAccess(Opcodes.OPC_getfield, baseField, // this._OT$base
            roleBinding);
    codeStream.dup(); // share for nested method call         // this._OT$base
    // remove role from this (old) base
    genAddOrRemoveRole(codeStream, scope, iboundBase, false);// -> void      // -> base._OT$removeRole(this)
    codeStream.invoke(Opcodes.OPC_invokevirtual, remove, // -> cache.remove(base)
            cacheTypeBinding);
    codeStream.pop(); // discard result

    // this._OT$base = (MyBase)otherBase
    codeStream.aload_0(); // this
    codeStream.aload_1(); // otherBase
    codeStream.checkcast(roleBinding.baseclass());
    codeStream.fieldAccess(Opcodes.OPC_putfield, baseField, roleBinding);

    // add new to cache (cache is still on the stack)
    codeStream.aload_1(); // otherBase
    codeStream.aload_0(); // this (role)
    codeStream.invoke(Opcodes.OPC_invokevirtual, put, cacheTypeBinding);

    // add to new base:
    codeStream.aload_1(); // otherBase
    genAddOrRemoveRole(codeStream, scope, iboundBase, true); // -> void      // -> base._OT$addRemoveRole(this, false)

    codeStream.return_();
}

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From source file:org.eclipse.objectteams.otdt.internal.core.compiler.statemachine.transformer.RoleMigrationImplementor.java

License:Open Source License

static void genAddOrRemoveRole(CodeStream codeStream, Scope scope, ReferenceBinding iboundBase,
        boolean isAdding) {
    codeStream.aload_0(); // this
    // OTDYN: Slightly different methods depending on the weaving strategy:
    switch (scope.compilerOptions().weavingScheme) {
    case OTDRE:/*from   w  ww  .j  a  v a 2s  .  c  om*/
        // _OT$addOrRemoveRole(role, isAdding)
        if (isAdding)
            codeStream.iconst_1(); // isAdding=true
        else
            codeStream.iconst_0(); // isAdding=false   
        codeStream.invoke(Opcodes.OPC_invokeinterface,
                iboundBase.getMethod(scope, IOTConstants.ADD_REMOVE_ROLE), iboundBase);
        break;
    case OTRE:
        // _OT$addRole(role) or _OT$removeRole(role):
        codeStream.invoke(Opcodes.OPC_invokeinterface,
                isAdding ? iboundBase.getMethod(scope, IOTConstants.ADD_ROLE)
                        : iboundBase.getMethod(scope, IOTConstants.REMOVE_ROLE),
                iboundBase);
    }
}

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