first commit

hrmsEjb/org/nfunk/jep/function/Add.java

@@ -0,0 +1,46 @@
+package org.nfunk.jep.function;
+
+import java.util.Stack;
+import org.nfunk.jep.ParseException;
+import org.nfunk.jep.type.Complex;
+
+public class Add extends PostfixMathCommand {
+  public void run(Stack paramStack) throws ParseException {
+    checkStack(paramStack);
+    Object object = paramStack.pop();
+    for (byte b = 1; b < this.curNumberOfParameters; b++) {
+      Object object1 = paramStack.pop();
+      object = add(object1, object);
+    } 
+    paramStack.push(object);
+  }
+  
+  public Object add(Object paramObject1, Object paramObject2) throws ParseException {
+    if (paramObject1 instanceof Complex) {
+      if (paramObject2 instanceof Complex)
+        return add((Complex)paramObject1, (Complex)paramObject2); 
+      if (paramObject2 instanceof Number)
+        return add((Complex)paramObject1, (Number)paramObject2); 
+    } else if (paramObject1 instanceof Number) {
+      if (paramObject2 instanceof Complex)
+        return add((Complex)paramObject2, (Number)paramObject1); 
+      if (paramObject2 instanceof Number)
+        return add((Number)paramObject1, (Number)paramObject2); 
+    } else if (paramObject1 instanceof String && paramObject2 instanceof String) {
+      return (String)paramObject1 + (String)paramObject2;
+    } 
+    throw new ParseException("Invalid parameter type");
+  }
+  
+  public Double add(Number paramNumber1, Number paramNumber2) {
+    return new Double(paramNumber1.doubleValue() + paramNumber2.doubleValue());
+  }
+  
+  public Complex add(Complex paramComplex1, Complex paramComplex2) {
+    return new Complex(paramComplex1.re() + paramComplex2.re(), paramComplex1.im() + paramComplex2.im());
+  }
+  
+  public Complex add(Complex paramComplex, Number paramNumber) {
+    return new Complex(paramComplex.re() + paramNumber.doubleValue(), paramComplex.im());
+  }
+}