Add documentation of struct PSBTAnalysis et al

Author: gwillen

src/psbt.h

@@ -557,23 +557,29 @@ enum class PSBTRole {
     EXTRACTOR
 };
 
+/**
+ * Holds an analysis of one input from a PSBT
+ */
 struct PSBTInputAnalysis {
-    bool has_utxo;
-    bool is_final;
-    PSBTRole next;
-
-    std::vector<CKeyID> missing_pubkeys;
-    std::vector<CKeyID> missing_sigs;
-    uint160 missing_redeem_script;
-    uint256 missing_witness_script;
+    bool has_utxo; //!< Whether we have UTXO information for this input
+    bool is_final; //!< Whether the input has all required information including signatures
+    PSBTRole next; //!< Which of the BIP 174 roles needs to handle this input next
+
+    std::vector<CKeyID> missing_pubkeys; //!< Pubkeys whose BIP32 derivation path is missing
+    std::vector<CKeyID> missing_sigs;    //!< Pubkeys whose signatures are missing
+    uint160 missing_redeem_script;       //!< Hash160 of redeem script, if missing
+    uint256 missing_witness_script;      //!< SHA256 of witness script, if missing
 };
 
+/**
+ * Holds the results of AnalyzePSBT (miscellaneous information about a PSBT)
+ */
 struct PSBTAnalysis {
-    Optional<size_t> estimated_vsize;
-    Optional<CFeeRate> estimated_feerate;
-    Optional<CAmount> fee;
-    std::vector<PSBTInputAnalysis> inputs;
-    PSBTRole next;
+    Optional<size_t> estimated_vsize;      //!< Estimated weight of the transaction
+    Optional<CFeeRate> estimated_feerate;  //!< Estimated feerate (fee / weight) of the transaction
+    Optional<CAmount> fee;                 //!< Amount of fee being paid by the transaction
+    std::vector<PSBTInputAnalysis> inputs; //!< More information about the individual inputs of the transaction
+    PSBTRole next;                         //!< Which of the BIP 174 roles needs to handle the transaction next
 };
 
 std::string PSBTRoleName(PSBTRole role);