1 | /**
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2 | * Primitives.java
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3 | * Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
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4 | *
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5 | * This program is free software: you can redistribute it and/or modify
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6 | * it under the terms of the GNU General Public License as published by
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7 | * the Free Software Foundation, either version 3 of the License, or
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8 | * (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 | */
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18 |
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19 | package org.expeditee.simple;
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20 |
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21 | import org.expeditee.math.ExpediteeJEP;
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22 |
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23 | public class Primitives extends Variables<SPrimitive<?>> {
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24 | private static final String[] prefixes = new String[] { SInteger.prefix,
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25 | SBoolean.prefix, SString.prefix, SReal.prefix, SCharacter.prefix };
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26 |
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27 | public static boolean isPrimitive(String varName) {
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28 | for (String s : prefixes) {
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29 | if (varName.startsWith(s))
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30 | return true;
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31 | }
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32 | return false;
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33 | }
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34 |
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35 | public static final int PREFIX_LENGTH = SInteger.prefix.length();
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36 |
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37 | public Primitives() {
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38 | super();
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39 | }
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40 |
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41 | protected String getType() {
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42 | return "primitive";
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43 | }
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44 |
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45 | public void setValue(String variableName, SPrimitive newValue)
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46 | throws IncorrectTypeException {
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47 | try {
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48 | // if it is an existing variable change the value
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49 | SPrimitive v = getVariable(variableName);
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50 | v.setValue(newValue);
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51 | } catch (Exception e) {
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52 | try{
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53 | add(variableName, newValue);
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54 | }catch(IncorrectTypeException ite){
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55 | throw ite;
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56 | }catch(Exception ex){
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57 | throw new IncorrectTypeException(ex.getClass().getSimpleName());
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58 | //DO NOTHING... THIS SHOULD NOT HAPPEN
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59 | //But the ANT builder is complaining
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60 | //ex.printStackTrace();
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61 | }
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62 | }
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63 | }
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64 |
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65 | public void setValue(String variableName, String newValue) throws Exception {
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66 | setValue(variableName, new SString(newValue));
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67 | }
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68 |
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69 | /**
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70 | * Adds a variable to the list of primitives.
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71 | *
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72 | * @param name
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73 | * the variable name
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74 | * @param value
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75 | * a primitive to take the new variables value from
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76 | * @throws Exception
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77 | * if the variable name is invalid
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78 | */
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79 | public void add(String name, SPrimitive value)
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80 | throws IncorrectTypeException {
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81 | // figure out the type and add it...
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82 | SPrimitive newVar;
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83 | if (name.startsWith(SInteger.prefix))
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84 | newVar = new SInteger();
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85 | else if (name.startsWith(SBoolean.prefix))
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86 | newVar = new SBoolean();
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87 | else if (name.startsWith(SReal.prefix))
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88 | newVar = new SReal();
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89 | else if (name.startsWith(SString.prefix))
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90 | newVar = new SString();
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91 | else if (name.startsWith(SCharacter.prefix))
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92 | newVar = new SCharacter();
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93 | else
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94 | throw new IncorrectTypeException(name, "primitive");
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95 | newVar.setName(name);
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96 | newVar.setValue(value);
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97 | list_.add(newVar);
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98 | }
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99 |
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100 | public String getStringValue(String name) throws Exception {
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101 | return getVariable(name).stringValue();
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102 | }
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103 |
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104 | public boolean getBooleanValue(String name) throws Exception {
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105 | return getVariable(name).booleanValue();
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106 | }
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107 |
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108 | public long getIntegerValue(String name) throws Exception {
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109 | return getVariable(name).integerValue();
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110 | }
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111 |
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112 | public double getDoubleValue(String name) throws Exception {
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113 | return getVariable(name).doubleValue();
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114 | }
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115 |
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116 | public char getCharacterValue(String name) throws Exception {
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117 | return getVariable(name).characterValue();
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118 | }
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119 |
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120 | /*
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121 | * public String setStringValue(String name, String value) throws Exception {
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122 | * return getVariable(name).stringValue(); }
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123 | *
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124 | * public boolean setBooleanValue(String name, boolean value) throws
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125 | * Exception { return getVariable(name).booleanValue(); }
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126 | *
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127 | * public long setIntegerValue(String name, long value) throws Exception {
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128 | * return getVariable(name).integerValue(); }
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129 | *
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130 | * public double setDoubleValue(String name, double value) throws Exception {
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131 | * return getVariable(name).doubleValue(); }
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132 | *
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133 | * public double setCharacterValue(String name, char value) throws Exception {
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134 | * return getVariable(name).characterValue(); }
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135 | */
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136 |
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137 | public static boolean isNumeric(String varName) {
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138 | return varName.startsWith(SInteger.prefix)
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139 | || varName.startsWith(SReal.prefix);
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140 | }
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141 |
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142 | public boolean equalValues(String var1, String var2) throws Exception {
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143 | return compareValues(var1, var2) == 0;
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144 | }
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145 |
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146 | /**
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147 | * Checks if the string representation of two variables is identical
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148 | * ignoring case.
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149 | *
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150 | * @param var1
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151 | * @param var2
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152 | * @return
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153 | * @throws Exception
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154 | */
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155 | public boolean equalValuesNoCase(String var1, String var2) throws Exception {
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156 | return getStringValue(var1).equalsIgnoreCase(getStringValue(var2));
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157 | }
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158 |
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159 | /**
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160 | *
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161 | * @param var1
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162 | * @param var2
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163 | * @return
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164 | * @throws Exception
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165 | */
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166 | public int compareValues(String var1, String var2) throws Exception {
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167 | // If one of them is a real and one is an integer then do a numeric
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168 | // comparison
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169 | if ((var1.startsWith(SReal.prefix) || var2.startsWith(SReal.prefix))) {
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170 | double v1 = getDoubleValue(var1);
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171 | double v2 = getDoubleValue(var2);
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172 | return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0);
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173 | } else if ((var1.startsWith(SInteger.prefix) || var2
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174 | .startsWith(SInteger.prefix))) {
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175 | long v1 = getIntegerValue(var1);
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176 | long v2 = getIntegerValue(var2);
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177 | return v1 > v2 ? 1 : (v1 < v2 ? -1 : 0);
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178 | } else if ((var1.startsWith(SBoolean.prefix) || var2
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179 | .startsWith(SBoolean.prefix))) {
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180 | boolean v1 = getBooleanValue(var1);
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181 | boolean v2 = getBooleanValue(var2);
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182 | return v1 == v2 ? 0 : (v1 == true ? 1 : -1);
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183 | }
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184 | return getStringValue(var1).compareTo(getStringValue(var2));
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185 | }
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186 |
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187 | /**
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188 | * Increments a variable.
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189 | *
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190 | * @param var
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191 | * the name of the variable to increment
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192 | * @throws Exception
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193 | */
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194 | public void add(String var) throws Exception {
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195 | setValue(var, new SReal(getVariable(var).doubleValue() + 1));
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196 | }
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197 |
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198 | /**
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199 | * Decrements a variable.
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200 | *
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201 | * @param var
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202 | * the name of the variable to decrement
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203 | * @throws Exception
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204 | */
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205 | public void subtract(String var) throws Exception {
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206 | setValue(var, new SReal(getVariable(var).doubleValue() - 1));
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207 | }
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208 |
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209 | /**
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210 | * Adds two variables to gether returning the value in the first.
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211 | *
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212 | * @param toSet
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213 | * @param amount
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214 | * @throws Exception
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215 | */
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216 | public void add(String toSet, String amount) throws Exception {
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217 | setValue(toSet, new SReal(getVariable(toSet).doubleValue()
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218 | + getVariable(amount).doubleValue()));
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219 | }
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220 |
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221 | public void subtract(String toSet, String amount) throws Exception {
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222 | setValue(toSet, new SReal(getVariable(toSet).doubleValue()
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223 | - getVariable(amount).doubleValue()));
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224 | }
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225 |
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226 | public void multiply(String toSet, String amount) throws Exception {
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227 | setValue(toSet, new SReal(getVariable(toSet).doubleValue()
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228 | - getVariable(amount).doubleValue()));
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229 | }
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230 |
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231 | public void divide(String toSet, String amount) throws Exception {
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232 | setValue(toSet, new SReal(getVariable(toSet).doubleValue()
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233 | - getVariable(amount).doubleValue()));
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234 | }
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235 |
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236 | public void add(String var1, String var2, String varAnswer)
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237 | throws Exception {
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238 | setValue(varAnswer, new SReal(getVariable(var1).doubleValue()
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239 | + getVariable(var2).doubleValue()));
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240 | }
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241 |
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242 | public void subtract(String var1, String var2, String varAnswer)
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243 | throws Exception {
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244 | setValue(varAnswer, new SReal(getVariable(var1).doubleValue()
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245 | - getVariable(var2).doubleValue()));
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246 | }
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247 |
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248 | public void divide(String var1, String var2, String varAnswer)
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249 | throws Exception {
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250 | setValue(varAnswer, new SReal(getVariable(var1).doubleValue()
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251 | / getVariable(var2).doubleValue()));
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252 | }
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253 |
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254 | public void multiply(String var1, String var2, String varAnswer)
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255 | throws Exception {
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256 | setValue(varAnswer, new SReal(getVariable(var1).doubleValue()
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257 | * getVariable(var2).doubleValue()));
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258 | }
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259 |
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260 | public void modulo(String var1, String var2, String varAnswer)
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261 | throws Exception {
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262 | setValue(varAnswer, new SReal(getVariable(var1).integerValue()
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263 | % getVariable(var2).integerValue()));
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264 | }
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265 |
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266 | public void power(String var1, String var2, String varAnswer)
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267 | throws Exception {
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268 | setValue(varAnswer, new SReal(Math.pow(getVariable(var1).doubleValue(),
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269 | getVariable(var2).doubleValue())));
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270 | }
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271 |
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272 | public void log(String variable, String answer) throws Exception {
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273 | setValue(answer, new SReal(Math
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274 | .log(getVariable(variable).doubleValue())));
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275 | }
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276 |
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277 | public void log10(String variable, String answer) throws Exception {
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278 | setValue(answer, new SReal(Math.log10(getVariable(variable)
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279 | .doubleValue())));
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280 | }
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281 |
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282 | public void sqrt(String variable, String answer) throws Exception {
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283 | setValue(answer, new SReal(Math.sqrt(getVariable(variable)
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284 | .doubleValue())));
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285 | }
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286 |
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287 | public void exp(String variable, String answer) throws Exception {
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288 | setValue(answer, new SReal(Math
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289 | .exp(getVariable(variable).doubleValue())));
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290 | }
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291 |
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292 | public void not(String variable, String answer) throws Exception {
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293 | setValue(answer, new SBoolean(!getVariable(variable).booleanValue()));
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294 | }
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295 |
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296 | public void addToParser(ExpediteeJEP myParser) {
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297 | for (SPrimitive var : list_) {
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298 | try {
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299 | Double value = var.doubleValue();
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300 | myParser.addVariable(var.getName().substring(SReal.prefix.length()), value);
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301 | } catch (Exception e) {
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302 | }
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303 | }
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304 | }
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305 | }
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