From e14d2d9318abc1a96e4ddb6b2564a05a61879d9b Mon Sep 17 00:00:00 2001
From: Mateusz Warowny <mmzwarowny@dundee.ac.uk>
Date: Mon, 8 May 2023 16:24:27 +0200
Subject: [PATCH] JAL-3954 Add value parsers for double, int and bool
 arguments

---
 src/jalview/ws/params/simple/BooleanOption.java    |    8 +++++++
 src/jalview/ws/params/simple/DoubleParameter.java  |   25 ++++++++++++++++++++
 src/jalview/ws/params/simple/IntegerParameter.java |   13 ++++++++++
 3 files changed, 46 insertions(+)

diff --git a/src/jalview/ws/params/simple/BooleanOption.java b/src/jalview/ws/params/simple/BooleanOption.java
index 87e4ad1..8609ff0 100644
--- a/src/jalview/ws/params/simple/BooleanOption.java
+++ b/src/jalview/ws/params/simple/BooleanOption.java
@@ -24,6 +24,8 @@ import java.net.URL;
 import java.util.Arrays;
 import java.util.List;
 
+import jalview.ws.params.ArgumentI;
+
 public class BooleanOption extends Option
 {
   public static class Builder extends Option.Builder
@@ -98,4 +100,10 @@ public class BooleanOption extends Option
   {
     this(name, description, label, isrequired, defValue, String.valueOf(true), link);
   }
+  
+  public static Boolean parseBoolean(ArgumentI argument)
+  {
+    return argument.getValue() != null && !argument.getValue().isEmpty() ?
+            true : false;
+  }
 }
diff --git a/src/jalview/ws/params/simple/DoubleParameter.java b/src/jalview/ws/params/simple/DoubleParameter.java
index 97c5fe1..f08f5fd 100644
--- a/src/jalview/ws/params/simple/DoubleParameter.java
+++ b/src/jalview/ws/params/simple/DoubleParameter.java
@@ -1,5 +1,6 @@
 package jalview.ws.params.simple;
 
+import jalview.ws.params.ArgumentI;
 import jalview.ws.params.ParameterI;
 import jalview.ws.params.ValueConstrainI;
 
@@ -152,4 +153,28 @@ public class DoubleParameter extends Option implements ParameterI
   {
     return new DoubleParameter(this);
   }
+  
+  /**
+   * Return argument value as double or null if string value is null or empty.
+   * 
+   * @param arg argument to extract value form
+   * @return argument value as double
+   */
+  public static Double parseDouble(ArgumentI arg)
+  {
+    return arg.getValue() != null && !arg.getValue().isEmpty() ?
+            Double.parseDouble(arg.getValue()) : null; 
+  }
+  
+  /**
+   * Return argument value as float or null if string value is null or empty.
+   * 
+   * @param arg argument to extract value from
+   * @return value as float
+   */
+  public static Float parseFloat(ArgumentI arg)
+  {
+    return arg.getValue() != null && !arg.getValue().isEmpty() ?
+            Float.parseFloat(arg.getValue()) : null;
+  }
 }
diff --git a/src/jalview/ws/params/simple/IntegerParameter.java b/src/jalview/ws/params/simple/IntegerParameter.java
index e154194..774c21f 100644
--- a/src/jalview/ws/params/simple/IntegerParameter.java
+++ b/src/jalview/ws/params/simple/IntegerParameter.java
@@ -20,6 +20,7 @@
  */
 package jalview.ws.params.simple;
 
+import jalview.ws.params.ArgumentI;
 import jalview.ws.params.ParameterI;
 import jalview.ws.params.ValueConstrainI;
 
@@ -165,4 +166,16 @@ public class IntegerParameter extends Option implements ParameterI
     return new IntegerParameter(this);
   }
 
+  /**
+   * Return argument value as int or null if string value is null or empty.
+   * 
+   * @param arg argument to extract value from
+   * @return value as int
+   */
+  public static Integer parseInt(ArgumentI arg)
+  {
+    return arg.getValue() != null && !arg.getValue().isEmpty() ?
+            Integer.parseInt(arg.getValue()) : null;
+  }
+
 }
-- 
1.7.10.2