Add explicit() method for confidential::Value

Author: stevenroose

src/confidential.rs

@@ -190,6 +190,15 @@ impl Value {
             _ => false,
         }
     }
+
+    /// Returns the explicit value.
+    /// Returns [None] if [is_explicit] returns false.
+    pub fn explicit(&self) -> Option<u64> {
+        match *self {
+            Value::Explicit(v) => Some(v),
+            _ => None,
+        }
+    }
 }
 
 /// A CT commitment to an asset
@@ -221,6 +230,15 @@ impl Asset {
             _ => false,
         }
     }
+
+    /// Unwrap the explicit value of this type.
+    /// Panics if [is_explicit] returns false.
+    pub fn unwrap_explicit(&self) -> sha256d::Hash {
+        match *self {
+            Asset::Explicit(v) => v,
+            _ => panic!("Called unwrap_explicit on non-explicit asset: {:?}", self),
+        }
+    }
 }
 
 
@@ -255,6 +273,15 @@ impl Nonce {
             _ => false,
         }
     }
+
+    /// Unwrap the explicit value of this type.
+    /// Panics if [is_explicit] returns false.
+    pub fn unwrap_explicit(&self) -> sha256d::Hash {
+        match *self {
+            Nonce::Explicit(v) => v,
+            _ => panic!("Called unwrap_explicit on non-explicit nonce: {:?}", self),
+        }
+    }
 }
 
 #[cfg(test)]