deploymentinfo: Add DeploymentName()

Author: ajtowns

src/deploymentinfo.cpp

@@ -16,3 +16,21 @@ const struct VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_B
         /*.gbt_force =*/ true,
     },
 };
+
+std::string DeploymentName(Consensus::BuriedDeployment dep)
+{
+    assert(ValidDeployment(dep));
+    switch (dep) {
+    case Consensus::DEPLOYMENT_HEIGHTINCB:
+        return "bip34";
+    case Consensus::DEPLOYMENT_CLTV:
+        return "bip65";
+    case Consensus::DEPLOYMENT_DERSIG:
+        return "bip66";
+    case Consensus::DEPLOYMENT_CSV:
+        return "csv";
+    case Consensus::DEPLOYMENT_SEGWIT:
+        return "segwit";
+    } // no default case, so the compiler can warn about missing cases
+    return "";
+}

src/deploymentinfo.h

@@ -5,13 +5,25 @@
 #ifndef BITCOIN_DEPLOYMENTINFO_H
 #define BITCOIN_DEPLOYMENTINFO_H
 
+#include <consensus/params.h>
+
+#include <string>
+
 struct VBDeploymentInfo {
     /** Deployment name */
     const char *name;
     /** Whether GBT clients can safely ignore this rule in simplified usage */
     bool gbt_force;
 };
 
-extern const struct VBDeploymentInfo VersionBitsDeploymentInfo[];
+extern const VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_BITS_DEPLOYMENTS];
+
+std::string DeploymentName(Consensus::BuriedDeployment dep);
+
+inline std::string DeploymentName(Consensus::DeploymentPos pos)
+{
+    assert(Consensus::ValidDeployment(pos));
+    return VersionBitsDeploymentInfo[pos].name;
+}
 
 #endif // BITCOIN_DEPLOYMENTINFO_H