Refactor using MapElements

17 files changed, 71 insertions, 219 deletions

diff --git a/crypto/src/asn1/crmf/CertReqMessages.cs b/crypto/src/asn1/crmf/CertReqMessages.cs
index 422950b9e..d49b90fe3 100644
--- a/crypto/src/asn1/crmf/CertReqMessages.cs
+++ b/crypto/src/asn1/crmf/CertReqMessages.cs
@@ -32,12 +32,7 @@ namespace Org.BouncyCastle.Asn1.Crmf
 
         public virtual CertReqMsg[] ToCertReqMsgArray()
         {
-            CertReqMsg[] result = new CertReqMsg[content.Count];
-            for (int i = 0; i != result.Length; ++i)
-            {
-                result[i] = CertReqMsg.GetInstance(content[i]);
-            }
-            return result;
+            return content.MapElements(CertReqMsg.GetInstance);
         }
 
         /**
diff --git a/crypto/src/asn1/crmf/CertReqMsg.cs b/crypto/src/asn1/crmf/CertReqMsg.cs
index 03ce32d99..ba9cfd389 100644
--- a/crypto/src/asn1/crmf/CertReqMsg.cs
+++ b/crypto/src/asn1/crmf/CertReqMsg.cs
@@ -81,15 +81,7 @@ namespace Org.BouncyCastle.Asn1.Crmf
 
         public virtual AttributeTypeAndValue[] GetRegInfo()
         {
-            if (regInfo == null)
-                return null;
-
-            AttributeTypeAndValue[] results = new AttributeTypeAndValue[regInfo.Count];
-            for (int i = 0; i != results.Length; ++i)
-            {
-                results[i] = AttributeTypeAndValue.GetInstance(regInfo[i]);
-            }
-            return results;
+            return regInfo?.MapElements(AttributeTypeAndValue.GetInstance);
         }
 
         /**
diff --git a/crypto/src/asn1/crmf/Controls.cs b/crypto/src/asn1/crmf/Controls.cs
index 70b48a959..ac568d741 100644
--- a/crypto/src/asn1/crmf/Controls.cs
+++ b/crypto/src/asn1/crmf/Controls.cs
@@ -33,12 +33,7 @@ namespace Org.BouncyCastle.Asn1.Crmf
 
         public virtual AttributeTypeAndValue[] ToAttributeTypeAndValueArray()
         {
-            AttributeTypeAndValue[] result = new AttributeTypeAndValue[content.Count];
-            for (int i = 0; i != result.Length; ++i)
-            {
-                result[i] = AttributeTypeAndValue.GetInstance(content[i]);
-            }
-            return result;
+            return content.MapElements(AttributeTypeAndValue.GetInstance);
         }
 
         /**
diff --git a/crypto/src/asn1/ess/SigningCertificate.cs b/crypto/src/asn1/ess/SigningCertificate.cs
index 6b8deee8b..ae263428e 100644
--- a/crypto/src/asn1/ess/SigningCertificate.cs
+++ b/crypto/src/asn1/ess/SigningCertificate.cs
@@ -53,36 +53,17 @@ namespace Org.BouncyCastle.Asn1.Ess
 			certs = new DerSequence(essCertID);
 		}
 
-		public EssCertID[] GetCerts()
-		{
-			EssCertID[] cs = new EssCertID[certs.Count];
-
-			for (int i = 0; i != certs.Count; i++)
-			{
-				cs[i] = EssCertID.GetInstance(certs[i]);
-			}
-
-			return cs;
-		}
-
-		public PolicyInformation[] GetPolicies()
-		{
-			if (policies == null)
-			{
-				return null;
-			}
-
-			PolicyInformation[] ps = new PolicyInformation[policies.Count];
-
-			for (int i = 0; i != policies.Count; i++)
-			{
-				ps[i] = PolicyInformation.GetInstance(policies[i]);
-			}
+        public EssCertID[] GetCerts()
+        {
+            return certs.MapElements(EssCertID.GetInstance);
+        }
 
-			return ps;
-		}
+        public PolicyInformation[] GetPolicies()
+        {
+            return policies?.MapElements(PolicyInformation.GetInstance);
+        }
 
-		/**
+        /**
 		 * The definition of SigningCertificate is
 		 * <pre>
 		 * SigningCertificate ::=  SEQUENCE {
@@ -94,7 +75,7 @@ namespace Org.BouncyCastle.Asn1.Ess
 		 *  member-body(2) us(840) rsadsi(113549) pkcs(1) pkcs9(9)
 		 *  smime(16) id-aa(2) 12 }
 		 */
-		public override Asn1Object ToAsn1Object()
+        public override Asn1Object ToAsn1Object()
 		{
 			Asn1EncodableVector v = new Asn1EncodableVector(certs);
             v.AddOptional(policies);
diff --git a/crypto/src/asn1/ess/SigningCertificateV2.cs b/crypto/src/asn1/ess/SigningCertificateV2.cs
index 4694098dd..557bede9c 100644
--- a/crypto/src/asn1/ess/SigningCertificateV2.cs
+++ b/crypto/src/asn1/ess/SigningCertificateV2.cs
@@ -65,25 +65,12 @@ namespace Org.BouncyCastle.Asn1.Ess
 
         public EssCertIDv2[] GetCerts()
         {
-            EssCertIDv2[] certIds = new EssCertIDv2[certs.Count];
-            for (int i = 0; i != certs.Count; i++)
-            {
-                certIds[i] = EssCertIDv2.GetInstance(certs[i]);
-            }
-            return certIds;
+            return certs.MapElements(EssCertIDv2.GetInstance);
         }
 
         public PolicyInformation[] GetPolicies()
         {
-            if (policies == null)
-                return null;
-
-            PolicyInformation[] policyInformations = new PolicyInformation[policies.Count];
-            for (int i = 0; i != policies.Count; i++)
-            {
-                policyInformations[i] = PolicyInformation.GetInstance(policies[i]);
-            }
-            return policyInformations;
+            return policies?.MapElements(PolicyInformation.GetInstance);
         }
 
         /**
diff --git a/crypto/src/asn1/isismtt/x509/AdmissionSyntax.cs b/crypto/src/asn1/isismtt/x509/AdmissionSyntax.cs
index 424d73c69..d7f4779d6 100644
--- a/crypto/src/asn1/isismtt/x509/AdmissionSyntax.cs
+++ b/crypto/src/asn1/isismtt/x509/AdmissionSyntax.cs
@@ -261,14 +261,7 @@ namespace Org.BouncyCastle.Asn1.IsisMtt.X509
         */
         public virtual Admissions[] GetContentsOfAdmissions()
         {
-            Admissions[] result = new Admissions[contentsOfAdmissions.Count];
-
-            for (int i = 0; i < contentsOfAdmissions.Count; ++i)
-            {
-                result[i] = Admissions.GetInstance(contentsOfAdmissions[i]);
-            }
-
-            return result;
+            return contentsOfAdmissions.MapElements(Admissions.GetInstance);
         }
     }
 }
diff --git a/crypto/src/asn1/isismtt/x509/ProfessionInfo.cs b/crypto/src/asn1/isismtt/x509/ProfessionInfo.cs
index 32ad31d9a..87e2aaa4f 100644
--- a/crypto/src/asn1/isismtt/x509/ProfessionInfo.cs
+++ b/crypto/src/asn1/isismtt/x509/ProfessionInfo.cs
@@ -326,45 +326,26 @@ namespace Org.BouncyCastle.Asn1.IsisMtt.X509
 			get { return namingAuthority; }
 		}
 
-		/**
+        /**
 		* @return Returns the professionItems.
 		*/
-		public virtual DirectoryString[] GetProfessionItems()
-		{
-			DirectoryString[] result = new DirectoryString[professionItems.Count];
-
-			for (int i = 0; i < professionItems.Count; ++i)
-			{
-				result[i] = DirectoryString.GetInstance(professionItems[i]);
-			}
-
-			return result;
-		}
+        public virtual DirectoryString[] GetProfessionItems()
+        {
+            return professionItems.MapElements(DirectoryString.GetInstance);
+        }
 
-		/**
+        /**
 		* @return Returns the professionOids.
 		*/
-		public virtual DerObjectIdentifier[] GetProfessionOids()
-		{
-			if (professionOids == null)
-			{
-				return new DerObjectIdentifier[0];
-			}
-
-			DerObjectIdentifier[] result = new DerObjectIdentifier[professionOids.Count];
-
-			for (int i = 0; i < professionOids.Count; ++i)
-			{
-				result[i] = DerObjectIdentifier.GetInstance(professionOids[i]);
-			}
-
-			return result;
-		}
+        public virtual DerObjectIdentifier[] GetProfessionOids()
+        {
+            return professionOids?.MapElements(DerObjectIdentifier.GetInstance) ?? new DerObjectIdentifier[0];
+        }
 
-		/**
+        /**
 		* @return Returns the registrationNumber.
 		*/
-		public virtual string RegistrationNumber
+        public virtual string RegistrationNumber
 		{
 			get { return registrationNumber; }
 		}
diff --git a/crypto/src/asn1/x509/AuthorityInformationAccess.cs b/crypto/src/asn1/x509/AuthorityInformationAccess.cs
index c601322c5..488f8b8a9 100644
--- a/crypto/src/asn1/x509/AuthorityInformationAccess.cs
+++ b/crypto/src/asn1/x509/AuthorityInformationAccess.cs
@@ -43,18 +43,12 @@ namespace Org.BouncyCastle.Asn1.X509
 
         private readonly AccessDescription[] descriptions;
 
-        private AuthorityInformationAccess(
-            Asn1Sequence seq)
+        private AuthorityInformationAccess(Asn1Sequence seq)
         {
             if (seq.Count < 1)
                 throw new ArgumentException("sequence may not be empty");
 
-            this.descriptions = new AccessDescription[seq.Count];
-
-            for (int i = 0; i < seq.Count; ++i)
-            {
-                descriptions[i] = AccessDescription.GetInstance(seq[i]);
-            }
+            this.descriptions = seq.MapElements(AccessDescription.GetInstance);
         }
 
         public AuthorityInformationAccess(
diff --git a/crypto/src/asn1/x509/CRLDistPoint.cs b/crypto/src/asn1/x509/CRLDistPoint.cs
index 518bf3f00..889769f29 100644
--- a/crypto/src/asn1/x509/CRLDistPoint.cs
+++ b/crypto/src/asn1/x509/CRLDistPoint.cs
@@ -41,24 +41,17 @@ namespace Org.BouncyCastle.Asn1.X509
 			seq = new DerSequence(points);
         }
 
-		/**
+        /**
          * Return the distribution points making up the sequence.
          *
          * @return DistributionPoint[]
          */
         public DistributionPoint[] GetDistributionPoints()
         {
-            DistributionPoint[] dp = new DistributionPoint[seq.Count];
-
-			for (int i = 0; i != seq.Count; ++i)
-            {
-                dp[i] = DistributionPoint.GetInstance(seq[i]);
-            }
-
-			return dp;
+            return seq.MapElements(DistributionPoint.GetInstance);
         }
 
-		/**
+        /**
          * Produce an object suitable for an Asn1OutputStream.
          * <pre>
          * CrlDistPoint ::= Sequence SIZE {1..MAX} OF DistributionPoint
diff --git a/crypto/src/asn1/x509/CertificatePolicies.cs b/crypto/src/asn1/x509/CertificatePolicies.cs
index 97214bd3f..1deef19d3 100644
--- a/crypto/src/asn1/x509/CertificatePolicies.cs
+++ b/crypto/src/asn1/x509/CertificatePolicies.cs
@@ -49,12 +49,7 @@ namespace Org.BouncyCastle.Asn1.X509
 
         private CertificatePolicies(Asn1Sequence seq)
         {
-            this.policyInformation = new PolicyInformation[seq.Count];
-
-            for (int i = 0; i < seq.Count; ++i)
-            {
-                policyInformation[i] = PolicyInformation.GetInstance(seq[i]);
-            }
+            this.policyInformation = seq.MapElements(PolicyInformation.GetInstance);
         }
 
         public virtual PolicyInformation[] GetPolicyInformation()
diff --git a/crypto/src/asn1/x509/TargetInformation.cs b/crypto/src/asn1/x509/TargetInformation.cs
index 2bf218977..c51e1e891 100644
--- a/crypto/src/asn1/x509/TargetInformation.cs
+++ b/crypto/src/asn1/x509/TargetInformation.cs
@@ -56,32 +56,25 @@ namespace Org.BouncyCastle.Asn1.X509
 			this.targets = targets;
 		}
 
-		/**
+        /**
 		 * Returns the targets in this target information extension.
 		 * <p>
 		 * The ArrayList is cloned before it is returned.</p>
 		 * 
 		 * @return Returns the targets.
 		 */
-		public virtual Targets[] GetTargetsObjects()
-		{
-			Targets[] result = new Targets[targets.Count];
-
-			for (int i = 0; i < targets.Count; ++i)
-			{
-				result[i] = Targets.GetInstance(targets[i]);
-			}
+        public virtual Targets[] GetTargetsObjects()
+        {
+            return targets.MapElements(Targets.GetInstance);
+        }
 
-			return result;
-		}
-
-		/**
+        /**
 		 * Constructs a target information from a single targets element. 
 		 * According to RFC 3281 only one targets element must be produced.
 		 * 
 		 * @param targets A Targets instance.
 		 */
-		public TargetInformation(
+        public TargetInformation(
 			Targets targets)
 		{
 			this.targets = new DerSequence(targets);
diff --git a/crypto/src/asn1/x509/Targets.cs b/crypto/src/asn1/x509/Targets.cs
index 0387e1f6b..93af8006d 100644
--- a/crypto/src/asn1/x509/Targets.cs
+++ b/crypto/src/asn1/x509/Targets.cs
@@ -85,26 +85,19 @@ namespace Org.BouncyCastle.Asn1.X509
 			this.targets = new DerSequence(targets);
 		}
 
-		/**
+        /**
 		 * Returns the targets in an <code>ArrayList</code>.
 		 * <p>
 		 * The ArrayList is cloned before it is returned.</p>
 		 * 
 		 * @return Returns the targets.
 		 */
-		public virtual Target[] GetTargets()
-		{
-			Target[] result = new Target[targets.Count];
-
-			for (int i = 0; i < targets.Count; ++i)
-			{
-				result[i] = Target.GetInstance(targets[i]);
-			}
-
-			return result;
-		}
+        public virtual Target[] GetTargets()
+        {
+            return targets.MapElements(Target.GetInstance);
+        }
 
-		/**
+        /**
 		 * Produce an object suitable for an Asn1OutputStream.
 		 * 
 		 * Returns:
@@ -115,7 +108,7 @@ namespace Org.BouncyCastle.Asn1.X509
 		 * 
 		 * @return an Asn1Object
 		 */
-		public override Asn1Object ToAsn1Object()
+        public override Asn1Object ToAsn1Object()
 		{
 			return targets;
 		}
diff --git a/crypto/src/asn1/x509/qualified/SemanticsInformation.cs b/crypto/src/asn1/x509/qualified/SemanticsInformation.cs
index 1106e10b1..36a15edec 100644
--- a/crypto/src/asn1/x509/qualified/SemanticsInformation.cs
+++ b/crypto/src/asn1/x509/qualified/SemanticsInformation.cs
@@ -61,18 +61,13 @@ namespace Org.BouncyCastle.Asn1.X509.Qualified
                 }
             }
 
-			if (obj != null)
+            if (obj != null)
             {
-                Asn1Sequence generalNameSeq = Asn1Sequence.GetInstance(obj);
-                nameRegistrationAuthorities = new GeneralName[generalNameSeq.Count];
-                for (int i= 0; i < generalNameSeq.Count; i++)
-                {
-                    nameRegistrationAuthorities[i] = GeneralName.GetInstance(generalNameSeq[i]);
-                }
+                this.nameRegistrationAuthorities = Asn1Sequence.GetInstance(obj).MapElements(GeneralName.GetInstance);
             }
         }
 
-		public SemanticsInformation(
+        public SemanticsInformation(
             DerObjectIdentifier semanticsIdentifier,
             GeneralName[] generalNames)
         {
diff --git a/crypto/src/ocsp/BasicOCSPResp.cs b/crypto/src/ocsp/BasicOCSPResp.cs
index 3e22931af..9986136ce 100644
--- a/crypto/src/ocsp/BasicOCSPResp.cs
+++ b/crypto/src/ocsp/BasicOCSPResp.cs
@@ -65,23 +65,12 @@ namespace Org.BouncyCastle.Ocsp
 			get { return data.ProducedAt.ToDateTime(); }
 		}
 
-		public SingleResp[] Responses
-		{
-			get
-			{
-				Asn1Sequence s = data.Responses;
-				SingleResp[] rs = new SingleResp[s.Count];
-
-				for (int i = 0; i != rs.Length; i++)
-				{
-					rs[i] = new SingleResp(SingleResponse.GetInstance(s[i]));
-				}
-
-				return rs;
-			}
-		}
+        public SingleResp[] Responses
+        {
+            get { return data.Responses.MapElements(element => new SingleResp(SingleResponse.GetInstance(element))); }
+        }
 
-		public X509Extensions ResponseExtensions
+        public X509Extensions ResponseExtensions
 		{
 			get { return data.ResponseExtensions; }
 		}
diff --git a/crypto/src/ocsp/OCSPReq.cs b/crypto/src/ocsp/OCSPReq.cs
index 194b6c9c7..51cb93b58 100644
--- a/crypto/src/ocsp/OCSPReq.cs
+++ b/crypto/src/ocsp/OCSPReq.cs
@@ -109,20 +109,12 @@ namespace Org.BouncyCastle.Ocsp
 			get { return GeneralName.GetInstance(req.TbsRequest.RequestorName); }
 		}
 
-		public Req[] GetRequestList()
-		{
-			Asn1Sequence seq = req.TbsRequest.RequestList;
-			Req[] requests = new Req[seq.Count];
-
-			for (int i = 0; i != requests.Length; i++)
-			{
-				requests[i] = new Req(Request.GetInstance(seq[i]));
-			}
-
-			return requests;
-		}
+        public Req[] GetRequestList()
+        {
+            return req.TbsRequest.RequestList.MapElements(element => new Req(Request.GetInstance(element)));
+        }
 
-		public X509Extensions RequestExtensions
+        public X509Extensions RequestExtensions
 		{
 			get { return X509Extensions.GetInstance(req.TbsRequest.RequestExtensions); }
 		}
diff --git a/crypto/src/ocsp/RespData.cs b/crypto/src/ocsp/RespData.cs
index 00de1cd59..e132c45b1 100644
--- a/crypto/src/ocsp/RespData.cs
+++ b/crypto/src/ocsp/RespData.cs
@@ -33,20 +33,12 @@ namespace Org.BouncyCastle.Ocsp
 			get { return data.ProducedAt.ToDateTime(); }
 		}
 
-		public SingleResp[] GetResponses()
-		{
-			Asn1Sequence s = data.Responses;
-			SingleResp[] rs = new SingleResp[s.Count];
-
-			for (int i = 0; i != rs.Length; i++)
-			{
-				rs[i] = new SingleResp(SingleResponse.GetInstance(s[i]));
-			}
-
-			return rs;
-		}
+        public SingleResp[] GetResponses()
+        {
+            return data.Responses.MapElements(element => new SingleResp(SingleResponse.GetInstance(element)));
+        }
 
-		public X509Extensions ResponseExtensions
+        public X509Extensions ResponseExtensions
 		{
 			get { return data.ResponseExtensions; }
 		}
diff --git a/crypto/src/x509/X509V2AttributeCertificate.cs b/crypto/src/x509/X509V2AttributeCertificate.cs
index 980b9f3d5..84bf0db54 100644
--- a/crypto/src/x509/X509V2AttributeCertificate.cs
+++ b/crypto/src/x509/X509V2AttributeCertificate.cs
@@ -214,20 +214,12 @@ namespace Org.BouncyCastle.X509
 			return cert.ACInfo.Extensions;
 		}
 
-		public virtual X509Attribute[] GetAttributes()
-		{
-			Asn1Sequence seq = cert.ACInfo.Attributes;
-			X509Attribute[] attrs = new X509Attribute[seq.Count];
-
-			for (int i = 0; i != seq.Count; i++)
-			{
-				attrs[i] = new X509Attribute((Asn1Encodable)seq[i]);
-			}
-
-			return attrs;
-		}
+        public virtual X509Attribute[] GetAttributes()
+        {
+            return cert.ACInfo.Attributes.MapElements(element => new X509Attribute(element));
+        }
 
-		public virtual X509Attribute[] GetAttributes(
+        public virtual X509Attribute[] GetAttributes(
 			string oid)
 		{
 			Asn1Sequence seq = cert.ACInfo.Attributes;