mirror of
https://github.com/pConst/basic_verilog.git
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112 lines
3.1 KiB
Java
112 lines
3.1 KiB
Java
/*
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Copyright (c) 2004, 2006 Pablo Bleyer Kocik.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
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WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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/** Class to store assembly symbol information. */
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public class Symbol {
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public enum Type {
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/** Symbols with no type. */
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NONE,
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/** Symbol is a register. */
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REGISTER,
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/** Symbol is a constant value. */
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CONSTANT,
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/** Symbol is a label. */
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LABEL
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};
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/** The type of the symbol. */
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public Type type;
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/** The value of the symbol. */
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public Object value;
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public Symbol() {
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type = Type.NONE;
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value = null;
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}
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/** Create a symbol with type NONE and specified value.
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@param v value object
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*/
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public Symbol(Object v) {
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type = Type.NONE;
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value = v;
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}
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/** Create a symbol with specified type and value.
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@param t symbol type
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@param v value object
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*/
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public Symbol(Type t, Object v) {
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type = t;
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value = v;
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}
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/** Create a symbol with type NONE and integer value.
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@param v integer value
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*/
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public Symbol(int v) {
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type = Type.NONE;
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value = new Integer(v);
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}
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/** Create a symbol with specified type and integer value.
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@param t symbol type
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@param v integer value
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*/
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public Symbol(Type t, int v) {
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type = t;
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value = new Integer(v);
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}
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public String toString() {
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// if (value instanceof Integer)
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// return type.toString() + ": " + numberFormat((Integer)value);
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// else
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return type.toString() + ": " + value.toString();
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}
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/** Format number representations.
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@param v integer value
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@return string representation
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*/
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public static String numberFormat(int v) {
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StringBuffer b = new StringBuffer();
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b.append("%" + Integer.toString(v, 2));
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b.append(" @" + Integer.toString(v, 8));
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b.append(" &" + Integer.toString(v, 10));
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b.append(" $" + Integer.toString(v, 16));
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return b.toString();
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}
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public static void main(String[] args) {
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Symbol s = new Symbol(Symbol.Type.LABEL, "The value");
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System.out.println(s.toString());
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}
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}
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