1 files changed, 167 insertions, 0 deletions
diff --git a/src/main/java/net/sf/antcontrib/math/Operation.java b/src/main/java/net/sf/antcontrib/math/Operation.java
new file mode 100644
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+++ b/src/main/java/net/sf/antcontrib/math/Operation.java
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+/*
+ * Copyright (c) 2001-2004 Ant-Contrib project.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package net.sf.antcontrib.math;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.DynamicConfigurator;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Vector;
+
+/**
+ * Class to represent a mathematical operation.
+ *
+ * @author		inger
+ */
+
+
+public class Operation
+        implements Evaluateable, DynamicConfigurator {
+    private String operation = "add";
+    private Vector operands = new Vector();
+    private String datatype = "double";
+    private boolean strict = false;
+
+    private boolean hasLocalOperands = false;
+    private Numeric localOperands[] = new Numeric[5];
+
+    public void setDynamicAttribute(String s, String s1)
+            throws BuildException {
+        throw new BuildException("no dynamic attributes for this element");
+    }
+
+    public Object createDynamicElement(String name)
+            throws BuildException {
+        Operation op = new Operation();
+        op.setOperation(name);
+        operands.add(op);
+        return op;
+    }
+
+    private void setLocalOperand(String value, int index) {
+        hasLocalOperands = true;
+        localOperands[index - 1] = new Numeric();
+        localOperands[index - 1].setValue(value);
+    }
+
+    public void setArg1(String value) {
+        setLocalOperand(value, 1);
+    }
+
+    public void setArg2(String value) {
+        setLocalOperand(value, 2);
+    }
+
+    public void setArg3(String value) {
+        setLocalOperand(value, 3);
+    }
+
+    public void setArg4(String value) {
+        setLocalOperand(value, 4);
+    }
+
+    public void setArg5(String value) {
+        setLocalOperand(value, 5);
+    }
+
+    public void addConfiguredNumeric(Numeric numeric) {
+        if (hasLocalOperands)
+            throw new BuildException("Cannot combine operand attributes with subelements");
+
+        operands.add(numeric);
+    }
+
+    public void addConfiguredOperation(Operation operation) {
+        if (hasLocalOperands)
+            throw new BuildException("Cannot combine operand attributes with subelements");
+
+        operands.add(operation);
+    }
+
+    public void addConfiguredNum(Numeric numeric) {
+        if (hasLocalOperands)
+            throw new BuildException("Cannot combine operand attributes with subelements");
+
+        operands.add(numeric);
+    }
+
+    public void addConfiguredOp(Operation operation) {
+        if (hasLocalOperands)
+            throw new BuildException("Cannot combine operand attributes with subelements");
+
+        operands.add(operation);
+    }
+
+    public void setOp(String operation) {
+        setOperation(operation);
+    }
+
+    public void setOperation(String operation) {
+        if (operation.equals("+"))
+            this.operation = "add";
+        else if (operation.equals("-"))
+            this.operation = "subtract";
+        else if (operation.equals("*"))
+            this.operation = "multiply";
+        else if (operation.equals("/"))
+            this.operation = "divide";
+        else if (operation.equals("%"))
+            this.operation = "mod";
+        else
+            this.operation = operation;
+    }
+
+    public void setDatatype(String datatype) {
+        this.datatype = datatype;
+    }
+
+    public void setStrict(boolean strict) {
+        this.strict = strict;
+    }
+
+    public Number evaluate() {
+        Evaluateable ops[] = null;
+
+        if (hasLocalOperands) {
+            List localOps = new ArrayList();
+            for (int i = 0; i < localOperands.length; i++) {
+                if (localOperands[i] != null)
+                    localOps.add(localOperands[i]);
+            }
+
+            ops = (Evaluateable[]) localOps.toArray(new Evaluateable[localOps.size()]);
+        }
+        else {
+            ops = (Evaluateable[]) operands.toArray(new Evaluateable[operands.size()]);
+        }
+
+        return Math.evaluate(operation,
+                             datatype,
+                             strict,
+                             ops);
+    }
+
+    public String toString() {
+        return "Operation[operation=" + operation
+                + ";datatype=" + datatype
+                + ";strict=" + strict
+                + ";localoperands=" + Arrays.asList(localOperands)
+                + ";operands=" + operands
+                + "]";
+    }
+}