Prefix pubkey constants with an underscore.

Author: jpe7s

anchor-src-gen/src/main/java/software/sava/anchor/AnchorPDA.java

@@ -214,13 +214,18 @@ public String varName(final GenSrcContext genSrcContext) {
         if (knownAccountRef != null) {
           return knownAccountRef.callReference() + ".toByteArray()";
         } else {
-          return maybeKnownPublicKey.toBase58() + ".toByteArray()";
+          return pubKeyVarName() + ".toByteArray()";
         }
       } else {
         return "seed" + index;
       }
     }
 
+    private String pubKeyVarName() {
+      final var base58 = maybeKnownPublicKey.toBase58();
+      return Character.isDigit(base58.charAt(0)) ? '_' + base58 : base58;
+    }
+
     @Override
     public String fieldName(final GenSrcContext genSrcContext, final Set<String> deDuplicateKnown) {
       if (isReadable) {
@@ -237,7 +242,7 @@ public String fieldName(final GenSrcContext genSrcContext, final Set<String> deD
             return null;
           }
         } else {
-          return "final PublicKey " + maybeKnownPublicKey.toBase58();
+          return "final PublicKey " + pubKeyVarName();
         }
       } else {
         return "final byte[] unknownSeedConstant" + index;
@@ -309,12 +314,22 @@ private ArgSeed createArgSeed(final int index) {
 
     private ConstSeed createConstSeed(final int index) {
       final var str = new String(value);
+      PublicKey maybePublicKey;
+      if (value.length == PUBLIC_KEY_LENGTH) {
+        try {
+          maybePublicKey = PublicKey.createPubKey(value);
+        } catch (final RuntimeException e) {
+          maybePublicKey = null;
+        }
+      } else {
+        maybePublicKey = null;
+      }
       return new ConstSeed(
           type,
           index,
           value, str,
           ConstSeed.isReadable(str),
-          value.length == PUBLIC_KEY_LENGTH ? PublicKey.createPubKey(value) : null
+          maybePublicKey
       );
     }