com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError Java Examples

/**
 * Instanciates a SAX2 parser and generate the AST from the input.
 */
public void createAST(Stylesheet stylesheet) {
    try {
        if (stylesheet != null) {
            stylesheet.parseContents(this);
            final int precedence = stylesheet.getImportPrecedence();
            final Iterator<SyntaxTreeNode> elements = stylesheet.elements();
            while (elements.hasNext()) {
                SyntaxTreeNode child = elements.next();
                if (child instanceof Text) {
                    final int l = getLineNumber();
                    ErrorMsg err =
                        new ErrorMsg(ErrorMsg.ILLEGAL_TEXT_NODE_ERR,l,null);
                    reportError(ERROR, err);
                }
            }
            if (!errorsFound()) {
                stylesheet.typeCheck(_symbolTable);
            }
        }
    }
    catch (TypeCheckError e) {
        reportError(ERROR, new ErrorMsg(ErrorMsg.JAXP_COMPILE_ERR, e));
    }
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (_select != null) {
        _type = _select.typeCheck(stable);
        if (_type instanceof NodeType || _type instanceof ReferenceType) {
            _select = new CastExpr(_select, Type.NodeSet);
            _type = Type.NodeSet;
        }
        if (_type instanceof NodeSetType||_type instanceof ResultTreeType) {
            typeCheckContents(stable); // with-params
            return Type.Void;
        }
        throw new TypeCheckError(this);
    }
    else {
        typeCheckContents(stable);          // with-params
        return Type.Void;
    }
}
 

/**
 * Check that we either have no parameters or one parameter that is
 * either a node or a node-set.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {

    // Check the argument type (if any)
    switch(argumentCount()) {
    case 0:
        _paramType = Type.Node;
        break;
    case 1:
        _paramType = _param.typeCheck(stable);
        break;
    default:
        throw new TypeCheckError(this);
    }

    // The argument has to be a node, a node-set or a node reference
    if ((_paramType != Type.NodeSet) &&
        (_paramType != Type.Node) &&
        (_paramType != Type.Reference)) {
        throw new TypeCheckError(this);
    }

    return (_type = Type.String);
}
 

/**
 * Type-checks the parameter. The parameter type is determined by the
 * 'select' expression (if present) or is a result tree if the parameter
 * element has a body and no 'select' expression.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (_select != null) {
        _type = _select.typeCheck(stable);
        if (_type instanceof ReferenceType == false && !(_type instanceof ObjectType)) {
            _select = new CastExpr(_select, Type.Reference);
        }
    }
    else if (hasContents()) {
        typeCheckContents(stable);
    }
    _type = Type.Reference;

    // This element has no type (the parameter does, but the parameter
    // element itself does not).
    return Type.Void;
}
 

/**
 * Runs a type check on either the variable element body or the
 * expression in the 'select' attribute
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {

    // Type check the 'select' expression if present
    if (_select != null) {
        _type = _select.typeCheck(stable);
    }
    // Type check the element contents otherwise
    else if (hasContents()) {
        typeCheckContents(stable);
        _type = Type.ResultTree;
    }
    else {
        _type = Type.Reference;
    }
    // The return type is void as the variable element does not leave
    // anything on the JVM's stack. The '_type' global will be returned
    // by the references to this variable, and not by the variable itself.
    return Type.Void;
}
 

/**
 * Instanciates a SAX2 parser and generate the AST from the input.
 */
public void createAST(Stylesheet stylesheet) {
    try {
        if (stylesheet != null) {
            stylesheet.parseContents(this);
            final Iterator<SyntaxTreeNode> elements = stylesheet.elements();
            while (elements.hasNext()) {
                SyntaxTreeNode child = elements.next();
                if (child instanceof Text) {
                    final int l = getLineNumber();
                    ErrorMsg err =
                        new ErrorMsg(ErrorMsg.ILLEGAL_TEXT_NODE_ERR,l,null);
                    reportError(ERROR, err);
                }
            }
            if (!errorsFound()) {
                stylesheet.typeCheck(_symbolTable);
            }
        }
    }
    catch (TypeCheckError e) {
        reportError(ERROR, new ErrorMsg(ErrorMsg.JAXP_COMPILE_ERR, e));
    }
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    final Type tleft = _left.typeCheck(stable);
    final Type tright = _right.typeCheck(stable);
    final MethodType ptype = lookupPrimop(stable, Ops[_op],
                                          new MethodType(Type.Void,
                                                         tleft, tright));
    if (ptype != null) {
        final Type arg1 = (Type) ptype.argsType().elementAt(0);
        if (!arg1.identicalTo(tleft)) {
            _left = new CastExpr(_left, arg1);
        }
        final Type arg2 = (Type) ptype.argsType().elementAt(1);
        if (!arg2.identicalTo(tright)) {
            _right = new CastExpr(_right, arg1);
        }
        return _type = ptype.resultType();
    }
    throw new TypeCheckError(this);
}
 

/**
 * Check that we either have no parameters or one parameter that is
 * either a node or a node-set.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {

    // Check the argument type (if any)
    switch(argumentCount()) {
    case 0:
        _paramType = Type.Node;
        break;
    case 1:
        _paramType = _param.typeCheck(stable);
        break;
    default:
        throw new TypeCheckError(this);
    }

    // The argument has to be a node, a node-set or a node reference
    if ((_paramType != Type.NodeSet) &&
        (_paramType != Type.Node) &&
        (_paramType != Type.Reference)) {
        throw new TypeCheckError(this);
    }

    return (_type = Type.String);
}
 

/**
 * Type-check this expression, and possibly child expressions.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    // Get the left and right operand types
    Type tleft = _left.typeCheck(stable);
    Type tright = _right.typeCheck(stable);

    // Check if the operator supports the two operand types
    MethodType wantType = new MethodType(Type.Void, tleft, tright);
    MethodType haveType = lookupPrimop(stable, Ops[_op], wantType);

    // Yes, the operation is supported
    if (haveType != null) {
        // Check if left-hand side operand must be type casted
        Type arg1 = (Type)haveType.argsType().elementAt(0);
        if (!arg1.identicalTo(tleft))
            _left = new CastExpr(_left, arg1);
        // Check if right-hand side operand must be type casted
        Type arg2 = (Type) haveType.argsType().elementAt(1);
        if (!arg2.identicalTo(tright))
            _right = new CastExpr(_right, arg1);
        // Return the result type for the operator we will use
        return _type = haveType.resultType();
    }
    throw new TypeCheckError(this);
}
 

/**
 * Type check the two parameters for this function
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {

    // Check that the function was passed exactly two arguments
    if (argumentCount() != 2) {
        throw new TypeCheckError(ErrorMsg.ILLEGAL_ARG_ERR, getName(), this);
    }

    // The first argument must be a String, or cast to a String
    _base = argument(0);
    Type baseType = _base.typeCheck(stable);
    if (baseType != Type.String)
        _base = new CastExpr(_base, Type.String);

    // The second argument must also be a String, or cast to a String
    _token = argument(1);
    Type tokenType = _token.typeCheck(stable);
    if (tokenType != Type.String)
        _token = new CastExpr(_token, Type.String);

    return _type = Type.Boolean;
}
 

/**
 * Type check the two parameters for this function
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {

    // Check that the function was passed exactly two arguments
    if (argumentCount() != 2) {
        throw new TypeCheckError(ErrorMsg.ILLEGAL_ARG_ERR, getName(), this);
    }

    // The first argument must be a String, or cast to a String
    _base = argument(0);
    Type baseType = _base.typeCheck(stable);
    if (baseType != Type.String)
        _base = new CastExpr(_base, Type.String);

    // The second argument must also be a String, or cast to a String
    _token = argument(1);
    Type tokenType = _token.typeCheck(stable);
    if (tokenType != Type.String)
        _token = new CastExpr(_token, Type.String);

    return _type = Type.Boolean;
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    final Type tleft = _left.typeCheck(stable);
    final MethodType ptype = lookupPrimop(stable, "u-",
                                          new MethodType(Type.Void,
                                                         tleft));

    if (ptype != null) {
        final Type arg1 = (Type) ptype.argsType().elementAt(0);
        if (!arg1.identicalTo(tleft)) {
            _left = new CastExpr(_left, arg1);
        }
        return _type = ptype.resultType();
    }

    throw new TypeCheckError(this);
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    Type type = _select.typeCheck(stable);

    // Prefer to handle the value as a node; fall back to String, otherwise
    if (type != null && !type.identicalTo(Type.Node)) {
        /***
         *** %HZ% Would like to treat result-tree fragments in the same
         *** %HZ% way as node sets for value-of, but that's running into
         *** %HZ% some snags.  Instead, they'll be converted to String
        if (type.identicalTo(Type.ResultTree)) {
            _select = new CastExpr(new CastExpr(_select, Type.NodeSet),
                                   Type.Node);
        } else
        ***/
        if (type.identicalTo(Type.NodeSet)) {
            _select = new CastExpr(_select, Type.Node);
        } else {
            _isString = true;
            if (!type.identicalTo(Type.String)) {
                _select = new CastExpr(_select, Type.String);
            }
            _isString = true;
        }
    }
    return Type.Void;
}
 

/**
 * Construct a cast expression and check that the conversion is
 * valid by calling typeCheck().
 */
public CastExpr(Expression left, Type type) throws TypeCheckError {
    _left = left;
    _type = type;           // use inherited field

    if ((_left instanceof Step) && (_type == Type.Boolean)) {
        Step step = (Step)_left;
        if ((step.getAxis() == Axis.SELF) && (step.getNodeType() != -1))
            _typeTest = true;
    }

    // check if conversion is valid
    setParser(left.getParser());
    setParent(left.getParent());
    left.setParent(this);
    typeCheck(left.getParser().getSymbolTable());
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (_select != null) {
        _type = _select.typeCheck(stable);
        if (_type instanceof NodeType || _type instanceof ReferenceType) {
            _select = new CastExpr(_select, Type.NodeSet);
            _type = Type.NodeSet;
        }
        if (_type instanceof NodeSetType||_type instanceof ResultTreeType) {
            typeCheckContents(stable); // with-params
            return Type.Void;
        }
        throw new TypeCheckError(this);
    }
    else {
        typeCheckContents(stable);          // with-params
        return Type.Void;
    }
}
 

/**
 * Argument of function-available call must be literal, typecheck
 * returns the type of function-available to be boolean.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (_type != null) {
       return _type;
    }
    if (_arg instanceof LiteralExpr) {
        return _type = Type.Boolean;
    }
    ErrorMsg err = new ErrorMsg(ErrorMsg.NEED_LITERAL_ERR,
                    "function-available", this);
    throw new TypeCheckError(err);
}
 

/**
 * Type-check the "test" expression and contents of this element.
 * The contents will be ignored if we know the test will always fail.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    // Type-check the "test" expression
    if (_test.typeCheck(stable) instanceof BooleanType == false) {
        _test = new CastExpr(_test, Type.Boolean);
    }
    // Type check the element contents
    if (!_ignore) {
        typeCheckContents(stable);
    }
    return Type.Void;
}
 

/**
 * Type-check this when element. The test should always be type checked,
 * while we do not bother with the contents if we know the test fails.
 * This is important in cases where the "test" expression tests for
 * the support of a non-available element, and the <xsl:when> body contains
 * this non-available element.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    // Type-check the test expression
    if (_test.typeCheck(stable) instanceof BooleanType == false) {
        _test = new CastExpr(_test, Type.Boolean);
    }
    // Type-check the contents (if necessary)
    if (!_ignore) {
        typeCheckContents(stable);
    }

    return Type.Void;
}
 

/**
 * Type checks the 'file' attribute (must be able to convert it to a str).
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    final Type type = _filename.typeCheck(stable);
    if (type instanceof StringType == false) {
        _filename = new CastExpr(_filename, Type.String);
    }
    typeCheckContents(stable);
    return Type.Void;
}
 

/**
 * Type-check the contents of this element. The element itself does not
 * need any type checking as it leaves nothign on the JVM's stack.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    // Type-check all attributes
    if (_attributeElements != null) {
        for (SyntaxTreeNode node : _attributeElements) {
            node.typeCheck(stable);
        }
    }
    typeCheckContents(stable);
    return Type.Void;
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (_path != null) {
        final Type ptype = _path.typeCheck(stable);
        if (ptype instanceof NodeType) {            // promote to node-set
            _path = new CastExpr(_path, Type.NodeSet);
        }
    }
    return _type = Type.NodeSet;
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (_pattern != null) {
        _pattern.typeCheck(stable);
    }

    return typeCheckContents(stable);
}
 

/**
 * Type check all the children of this node.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    final int count = _globals.size();
    for (int i = 0; i < count; i++) {
        final VariableBase var = (VariableBase)_globals.elementAt(i);
        var.typeCheck(stable);
    }
    return typeCheckContents(stable);
}
 

/**
 * Verify that a template with this name exists.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    final Template template = stable.lookupTemplate(_name);
    if (template != null) {
        typeCheckContents(stable);
    }
    else {
        ErrorMsg err = new ErrorMsg(ErrorMsg.TEMPLATE_UNDEF_ERR,_name,this);
        throw new TypeCheckError(err);
    }
    return Type.Void;
}
 

/**
 * Type check a FilterParentPath. If the filter is not a node-set add a
 * cast to node-set only if it is of reference type. This type coercion is
 * needed for expressions like $x/LINE where $x is a parameter reference.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    final Type ftype = _filterExpr.typeCheck(stable);
    if (ftype instanceof NodeSetType == false) {
        if (ftype instanceof ReferenceType)  {
            _filterExpr = new CastExpr(_filterExpr, Type.NodeSet);
        }
        /*
        else if (ftype instanceof ResultTreeType)  {
            _filterExpr = new CastExpr(_filterExpr, Type.NodeSet);
        }
        */
        else if (ftype instanceof NodeType)  {
            _filterExpr = new CastExpr(_filterExpr, Type.NodeSet);
        }
        else {
            throw new TypeCheckError(this);
        }
    }

    // Wrap single node path in a node set
    final Type ptype = _path.typeCheck(stable);
    if (!(ptype instanceof NodeSetType)) {
        _path = new CastExpr(_path, Type.NodeSet);
    }

    return _type = Type.NodeSet;
}
 

/**
 * Type check the contents of this element
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {

    if (_ignore) return (Type.Void);

    // _mergeSet Point to any previous definition of this attribute set
    _mergeSet = stable.addAttributeSet(this);

    _method = AttributeSetPrefix + getXSLTC().nextAttributeSetSerial();

    if (_useSets != null) _useSets.typeCheck(stable);
    typeCheckContents(stable);
    return Type.Void;
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    _type = _select.typeCheck(stable);

    if (_type instanceof ReferenceType || _type instanceof NodeType) {
        _select = new CastExpr(_select, Type.NodeSet);
        typeCheckContents(stable);
        return Type.Void;
    }
    if (_type instanceof NodeSetType||_type instanceof ResultTreeType) {
        typeCheckContents(stable);
        return Type.Void;
    }
    throw new TypeCheckError(this);
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (!_ignore) {
        _name.typeCheck(stable);
        if (_namespace != null) {
            _namespace.typeCheck(stable);
        }
        typeCheckContents(stable);
    }
    return Type.Void;
}
 

public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    stype = _step.typeCheck(stable);
    _path.typeCheck(stable);

    if (_axisMismatch) enableNodeOrdering();

    return _type = Type.NodeSet;
}
 

/**
 * Type-check this when element. The test should always be type checked,
 * while we do not bother with the contents if we know the test fails.
 * This is important in cases where the "test" expression tests for
 * the support of a non-available element, and the <xsl:when> body contains
 * this non-available element.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    // Type-check the test expression
    if (_test.typeCheck(stable) instanceof BooleanType == false) {
        _test = new CastExpr(_test, Type.Boolean);
    }
    // Type-check the contents (if necessary)
    if (!_ignore) {
        typeCheckContents(stable);
    }

    return Type.Void;
}