Java Type.Real方法代码示例

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; //导入方法依赖的package包/类
public Type typeCheck(SymbolTable stable) throws TypeCheckError {

        // Inform stylesheet to instantiate a DecimalFormat object
        getStylesheet().numberFormattingUsed();

        final Type tvalue = _value.typeCheck(stable);
        if (tvalue instanceof RealType == false) {
            _value = new CastExpr(_value, Type.Real);
        }
        final Type tformat = _format.typeCheck(stable);
        if (tformat instanceof StringType == false) {
            _format = new CastExpr(_format, Type.String);
        }
        if (argumentCount() == 3) {
            final Type tname = _name.typeCheck(stable);

            if (_name instanceof LiteralExpr) {
                final LiteralExpr literal = (LiteralExpr) _name;
                _resolvedQName =
                    getParser().getQNameIgnoreDefaultNs(literal.getValue());
            }
            else if (tname instanceof StringType == false) {
                _name = new CastExpr(_name, Type.String);
            }
        }
        return _type = Type.String;
    }
 

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; //导入方法依赖的package包/类
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (_value != null) {
        Type tvalue = _value.typeCheck(stable);
        if (tvalue instanceof RealType == false) {
            _value = new CastExpr(_value, Type.Real);
        }
    }
    if (_count != null) {
        _count.typeCheck(stable);
    }
    if (_from != null) {
        _from.typeCheck(stable);
    }
    if (_format != null) {
        _format.typeCheck(stable);
    }
    if (_lang != null) {
        _lang.typeCheck(stable);
    }
    if (_letterValue != null) {
        _letterValue.typeCheck(stable);
    }
    if (_groupingSeparator != null) {
        _groupingSeparator.typeCheck(stable);
    }
    if (_groupingSize != null) {
        _groupingSize.typeCheck(stable);
    }
    return Type.Void;
}
 

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; //导入方法依赖的package包/类
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    if (argumentCount() > 0) {
        argument().typeCheck(stable);
    }
    return _type = Type.Real;
}
 

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; //导入方法依赖的package包/类
/**
 * Typing rules: see XSLT Reference by M. Kay page 345.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    final Type tleft = _left.typeCheck(stable);
    final Type tright = _right.typeCheck(stable);

    if (tleft.isSimple() && tright.isSimple()) {
        if (tleft != tright) {
            if (tleft instanceof BooleanType) {
                _right = new CastExpr(_right, Type.Boolean);
            }
            else if (tright instanceof BooleanType) {
                _left = new CastExpr(_left, Type.Boolean);
            }
            else if (tleft instanceof NumberType ||
                     tright instanceof NumberType) {
                _left = new CastExpr(_left, Type.Real);
                _right = new CastExpr(_right, Type.Real);
            }
            else {          // both compared as strings
                _left = new CastExpr(_left,   Type.String);
                _right = new CastExpr(_right, Type.String);
            }
        }
    }
    else if (tleft instanceof ReferenceType) {
        _right = new CastExpr(_right, Type.Reference);
    }
    else if (tright instanceof ReferenceType) {
        _left = new CastExpr(_left, Type.Reference);
    }
    // the following 2 cases optimize @attr|.|.. = 'string'
    else if (tleft instanceof NodeType && tright == Type.String) {
        _left = new CastExpr(_left, Type.String);
    }
    else if (tleft == Type.String && tright instanceof NodeType) {
        _right = new CastExpr(_right, Type.String);
    }
    // optimize node/node
    else if (tleft instanceof NodeType && tright instanceof NodeType) {
        _left = new CastExpr(_left, Type.String);
        _right = new CastExpr(_right, Type.String);
    }
    else if (tleft instanceof NodeType && tright instanceof NodeSetType) {
        // compare(Node, NodeSet) will be invoked
    }
    else if (tleft instanceof NodeSetType && tright instanceof NodeType) {
        swapArguments();    // for compare(Node, NodeSet)
    }
    else {
        // At least one argument is of type node, node-set or result-tree

        // Promote an expression of type node to node-set
        if (tleft instanceof NodeType) {
            _left = new CastExpr(_left, Type.NodeSet);
        }
        if (tright instanceof NodeType) {
            _right = new CastExpr(_right, Type.NodeSet);
        }

        // If one arg is a node-set then make it the left one
        if (tleft.isSimple() ||
            tleft instanceof ResultTreeType &&
            tright instanceof NodeSetType) {
            swapArguments();
        }

        // Promote integers to doubles to have fewer compares
        if (_right.getType() instanceof IntType) {
            _right = new CastExpr(_right, Type.Real);
        }
    }
    return _type = Type.Boolean;
}
 

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; //导入方法依赖的package包/类
/**
 * Type check a predicate expression. If the type of the expression is
 * number convert it to boolean by adding a comparison with position().
 * Note that if the expression is a parameter, we cannot distinguish
 * at compile time if its type is number or not. Hence, expressions of
 * reference type are always converted to booleans.
 *
 * This method may be called twice, before and after calling
 * <code>dontOptimize()</code>. If so, the second time it should honor
 * the new value of <code>_canOptimize</code>.
 */
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    Type texp = _exp.typeCheck(stable);

    // We need explicit type information for reference types - no good!
    if (texp instanceof ReferenceType) {
        _exp = new CastExpr(_exp, texp = Type.Real);
    }

    // A result tree fragment should not be cast directly to a number type,
    // but rather to a boolean value, and then to a numer (0 or 1).
    // Ref. section 11.2 of the XSLT 1.0 spec
    if (texp instanceof ResultTreeType) {
        _exp = new CastExpr(_exp, Type.Boolean);
        _exp = new CastExpr(_exp, Type.Real);
        texp = _exp.typeCheck(stable);
    }

    // Numerical types will be converted to a position filter
    if (texp instanceof NumberType) {
        // Cast any numerical types to an integer
        if (texp instanceof IntType == false) {
            _exp = new CastExpr(_exp, Type.Int);
        }

        if (_canOptimize) {
            // Nth position optimization. Expression must not depend on context
            _nthPositionFilter =
                !_exp.hasLastCall() && !_exp.hasPositionCall();

            // _nthDescendant optimization - only if _nthPositionFilter is on
            if (_nthPositionFilter) {
                SyntaxTreeNode parent = getParent();
                _nthDescendant = (parent instanceof Step) &&
                    (parent.getParent() instanceof AbsoluteLocationPath);
                return _type = Type.NodeSet;
            }
        }

       // Reset optimization flags
        _nthPositionFilter = _nthDescendant = false;

       // Otherwise, expand [e] to [position() = e]
       final QName position =
            getParser().getQNameIgnoreDefaultNs("position");
       final PositionCall positionCall =
            new PositionCall(position);
       positionCall.setParser(getParser());
       positionCall.setParent(this);

       _exp = new EqualityExpr(Operators.EQ, positionCall,
                                _exp);
       if (_exp.typeCheck(stable) != Type.Boolean) {
           _exp = new CastExpr(_exp, Type.Boolean);
       }
       return _type = Type.Boolean;
    }
    else {
        // All other types will be handled as boolean values
        if (texp instanceof BooleanType == false) {
            _exp = new CastExpr(_exp, Type.Boolean);
        }
        return _type = Type.Boolean;
    }
}
 

import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; //导入方法依赖的package包/类
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
    return _type = Type.Real;
}