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386 lines
8.2 KiB
386 lines
8.2 KiB
//==============================================================================
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//
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// Copyright (c) 2002-
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// Authors:
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// * Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford, formerly University of Birmingham)
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//
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//------------------------------------------------------------------------------
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//
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// This file is part of PRISM.
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//
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// PRISM is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// PRISM is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with PRISM; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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//==============================================================================
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package parser;
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import java.util.*;
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import java.text.*;
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import parser.type.*;
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import prism.PrismLangException;
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// class to store a list of typed constant/variable values
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public class Values //implements Comparable
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{
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ArrayList<String> names;
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ArrayList<Object> values;
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// constructors
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/**
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* Construct a new, empty Values object
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*/
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public Values()
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{
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names = new ArrayList<String>();
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values = new ArrayList<Object>();
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}
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/**
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* Construct a new Values object by copying an existing one
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*/
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@SuppressWarnings("unchecked")
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public Values(Values v)
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{
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names = (ArrayList<String>)v.names.clone();
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values = (ArrayList<Object>)v.values.clone();
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}
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// add value (type of value detetmined by type of Object)
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// (note: no checking for duplication/inconsistencies/etc.)
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public void addValue(String n, Object o)
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{
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names.add(n);
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values.add(o);
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}
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// add multiple values
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// (note: no checking for duplication/inconsistencies/etc.)
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public void addValues(Values v)
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{
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int i, n;
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if (v == null) return;
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n = v.getNumValues();
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for (i = 0; i < n; i ++) {
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addValue(v.getName(i), v.getValue(i));
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}
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}
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// set value (overwrite if already present)
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// returns 0 if added, -1 if overwritten
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public int setValue(String n, Object o)
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{
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int i = getIndexOf(n);
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if (i == -1) {
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addValue(n, o);
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return 0;
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}
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else {
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values.set(i, o);
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return -1;
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}
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}
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// set multiple values (overwrite if already present)
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// returns num values overwritten
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public int setValues(Values v)
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{
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int i, n, c = 0;
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if (v == null) return c;
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n = v.getNumValues();
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for (i = 0; i < n; i ++) {
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if (setValue(v.getName(i), v.getValue(i)) == 0) c++;
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}
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return c;
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}
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// remove value (if present)
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public void removeValue(int i)
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{
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if (i >= 0 && i < getNumValues()) {
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names.remove(i);
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values.remove(i);
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}
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}
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// remove value (if present)
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public void removeValue(String n)
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{
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int i = getIndexOf(n);
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if (i != -1) {
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removeValue(i);
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}
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}
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// get methods
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public int getNumValues()
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{
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return names.size();
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}
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public String getName(int i)
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{
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return names.get(i);
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}
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public int getIndexOf(String n)
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{
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return names.indexOf(n);
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}
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public boolean contains(String n)
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{
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return names.contains(n);
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}
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public Type getType(int i)
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{
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Object o = values.get(i);
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if (o instanceof Integer) return TypeInt.getInstance();
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if (o instanceof Double) return TypeDouble.getInstance();
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if (o instanceof Boolean) return TypeBool.getInstance();
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else return null;
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}
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public Object getValue(int i)
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{
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return values.get(i);
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}
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/**
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* Evaluate ith value as an int.
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* (Note: Booleans get mapped to 0/1)
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*/
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public int getIntValue(int i) throws PrismLangException
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{
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Object o;
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o = values.get(i);
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if (o instanceof Boolean) {
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return ((Boolean)o).booleanValue() ? 1 : 0;
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}
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if (o instanceof Integer) {
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return ((Integer)o).intValue();
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}
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throw new PrismLangException("Cannot get integer value for \"" + getName(i) + "\"");
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}
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/**
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* Evaluate ith value as a double.
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* (Note: Booleans get mapped to 0.0/1.0)
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*/
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public double getDoubleValue(int i) throws PrismLangException
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{
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Object o;
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o = values.get(i);
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if (o instanceof Boolean) {
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return ((Boolean)o).booleanValue() ? 1.0 : 0.0;
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}
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if (o instanceof Integer) {
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return ((Integer)o).intValue();
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}
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if (o instanceof Double) {
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return ((Double)o).doubleValue();
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}
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throw new PrismLangException("Cannot get double value for \"" + getName(i) + "\"");
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}
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/**
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* Evaluate ith value as a Boolean.
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*/
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public boolean getBooleanValue(int i) throws PrismLangException
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{
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Object o;
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o = values.get(i);
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if (!(o instanceof Boolean)) {
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throw new PrismLangException("Cannot get boolean value for \"" + getName(i) + "\"");
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}
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return ((Boolean)o).booleanValue();
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}
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public Object getValueOf(String n) throws PrismLangException
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{
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int i;
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i = getIndexOf(n);
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if (i == -1) throw new PrismLangException("Couldn't get value for \"" + n + "\"");
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return getValue(i);
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}
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public int getIntValueOf(String n) throws PrismLangException
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{
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int i;
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i = getIndexOf(n);
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if (i == -1) throw new PrismLangException("Couldn't get value for \"" + n + "\"");
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return getIntValue(i);
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}
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public double getDoubleValueOf(String n) throws PrismLangException
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{
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int i;
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i = getIndexOf(n);
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if (i == -1) throw new PrismLangException("Couldn't get value for \"" + n + "\"");
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return getDoubleValue(i);
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}
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public boolean getBooleanValueOf(String n) throws PrismLangException
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{
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int i;
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i = getIndexOf(n);
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if (i == -1) throw new PrismLangException("Couldn't get value for \"" + n + "\"");
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return getBooleanValue(i);
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}
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// compare for equality
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public boolean equals(Object o)
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{
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int i, j, n;
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Values v;
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String s;
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// trivial case: null arg
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if (o == null) return false;
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// another trivial case: wrong type
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try { v = (Values)o; } catch (ClassCastException e) { return false; }
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// check sizes are equal
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n = getNumValues();
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if (v.getNumValues() != n) return false;
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// check each value
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for (i = 0; i < n; i++) {
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s = getName(i);
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j = v.getIndexOf(s);
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if (j == -1) return false;
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o = v.getValue(j);
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if (!getValue(i).equals(o)) return false;
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}
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return true;
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}
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// compare
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// public int compareTo(Object o)
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// {
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// int i, j, n, c;
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// Values v;
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// String s;
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// Object c1, c2;
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//
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// // trivial case: null arg
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// if (o == null) throw new NullPointerException();
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// // cast
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// v = (Values)o;
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// // check sizes are equal
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// n = getNumValues();
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// if (v.getNumValues() != n) throw new ClassCastException();
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// // check each value
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// for (i = 0; i < n; i++) {
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// s = getName(i);
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// j = v.getIndexOf(s);
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// if (j == -1) throw new ClassCastException();
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// c1 = getValue(i);
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// c2 = v.getValue(j);
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// if (c1 instanceof Double) c = ((Double)c1).compareTo(c2);
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// else if (c1 instanceof Integer) c = ((Integer)c1).compareTo(c2);
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// else {
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// boolean b1 = ((Boolean)c1).booleanValue();
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// boolean b2 = ((Boolean)c2).booleanValue();
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// if (b1 == b2) c = 0; else if (b1 == false) c = -1; else c = 1;
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// }
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// if (c != 0) return c;
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// }
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// return 0;
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// }
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// clone
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public Object clone()
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{
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Values res;
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int i, n;
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String s;
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Object o;
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res = new Values();
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n = getNumValues();
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for (i = 0; i < n; i++) {
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s = getName(i);
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o = getValue(i);
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if (o instanceof Integer) o = new Integer(((Integer)o).intValue());
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else if (o instanceof Double) o = new Double(((Double)o).doubleValue());
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else o = new Boolean(((Boolean)o).booleanValue());
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res.addValue(s, o);
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}
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return res;
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}
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// to string
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public String toString()
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{
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int i, n;
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String s;
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n = getNumValues();
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s = "";
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for (i = 0; i < n; i++) {
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s += getName(i) + "=" + valToString(getValue(i));
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if (i < n-1) s += ",";
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}
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return s;
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}
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private String valToString(Object o)
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{
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String s;
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if (o instanceof Double) {
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NumberFormat nf = new DecimalFormat();
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nf.setMaximumFractionDigits(6);
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s = nf.format(((Double)o).doubleValue());
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} else {
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s = o.toString();
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}
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return s;
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}
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}
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//------------------------------------------------------------------------------
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