Add constant seeds in Rust client (#144)

Ports #118 into the next minor release

.changeset/wise-fishes-bathe.md

@@ -0,0 +1,5 @@
+---
+'@metaplex-foundation/kinobi': patch
+---
+
+Add constant seeds in Rust client

src/renderers/rust/getRenderMapVisitor.ts

@@ -155,6 +155,9 @@ export function getRenderMapVisitor(options: GetRustRenderMapOptions = {}) {
           });
           const hasVariableSeeds =
             pdaSeeds.filter(isNodeFilter('variablePdaSeedNode')).length > 0;
+          const constantSeeds = pdaSeeds.filter(
+            isNodeFilter('constantPdaSeedNode')
+          );
 
           const { imports } = typeManifest;
 
@@ -172,6 +175,7 @@ export function getRenderMapVisitor(options: GetRustRenderMapOptions = {}) {
               program,
               typeManifest,
               seeds,
+              constantSeeds,
               hasVariableSeeds,
             })
           );

src/renderers/rust/templates/accountsPage.njk

@@ -17,6 +17,37 @@ impl {{ account.name | pascalCase }} {
     pub const LEN: usize = {{ account.size }};
   {% endif %}
 
+  {% if constantSeeds.length > 0 %}
+    {% set index = 0 %}
+    /// Prefix values used to generate a PDA for this account.
+    ///
+    /// Values are positional and appear in the following order:
+    ///
+    {% for seed in seeds %}
+      {% if seed.kind === 'programIdPdaSeedNode' %}
+        ///   {{ loop.index0 }}. `crate::{{ program.name | snakeCase | upper }}_ID`
+      {% elif seed.kind === 'constantPdaSeedNode' %}
+        ///   {{ loop.index0 }}. `{{ account.name | pascalCase }}::PREFIX{{ '.' + index if constantSeeds.length > 1 }}`
+        {% set index = index + 1 %}
+      {% else %}
+        ///   {{ loop.index0 }}. {{ seed.name | snakeCase }} (`{{ seed.typeManifest.type }}`)
+      {% endif %}
+    {% endfor %}
+    {% if constantSeeds.length > 1 %}
+      pub const PREFIX: (
+      {% for seed in constantSeeds %}
+        &'static [u8],
+      {% endfor %}
+      ) = (
+      {% for seed in constantSeeds %}
+        {{ seed.value.render }}.as_bytes(),
+      {% endfor %}
+      );
+    {% elif constantSeeds.length === 1 %}
+      pub const PREFIX: &'static [u8] = {{ constantSeeds[0].value.render }}.as_bytes();
+    {% endif %}
+  {% endif %}
+
   {% if seeds.length > 0 %}
     pub fn create_pda(
       {% if hasVariableSeeds %}

test/packages/rust/src/generated/accounts/delegate_record.rs

@@ -21,6 +21,15 @@ pub struct DelegateRecord {
 impl DelegateRecord {
     pub const LEN: usize = 282;
 
+    /// Prefix values used to generate a PDA for this account.
+    ///
+    /// Values are positional and appear in the following order:
+    ///
+    ///   0. `DelegateRecord::PREFIX`
+    ///   1. `crate::MPL_TOKEN_METADATA_ID`
+    ///   2. role (`DelegateRole`)
+    pub const PREFIX: &'static [u8] = "delegate_record".as_bytes();
+
     pub fn create_pda(
         role: DelegateRole,
         bump: u8,

test/packages/rust/src/generated/accounts/frequency_account.rs

@@ -22,6 +22,14 @@ pub struct FrequencyAccount {
 impl FrequencyAccount {
     pub const LEN: usize = 24;
 
+    /// Prefix values used to generate a PDA for this account.
+    ///
+    /// Values are positional and appear in the following order:
+    ///
+    ///   0. `FrequencyAccount::PREFIX`
+    ///   1. `crate::MPL_TOKEN_AUTH_RULES_ID`
+    pub const PREFIX: &'static [u8] = "frequency_pda".as_bytes();
+
     pub fn create_pda(
         bump: u8,
     ) -> Result<solana_program::pubkey::Pubkey, solana_program::pubkey::PubkeyError> {

test/packages/rust/src/generated/accounts/master_edition_v1.rs

@@ -30,6 +30,15 @@ pub struct MasterEditionV1 {
 }
 
 impl MasterEditionV1 {
+    /// Prefix values used to generate a PDA for this account.
+    ///
+    /// Values are positional and appear in the following order:
+    ///
+    ///   0. `MasterEditionV1::PREFIX`
+    ///   1. `crate::MPL_TOKEN_METADATA_ID`
+    ///   2. delegate_role (`DelegateRole`)
+    pub const PREFIX: &'static [u8] = "metadata".as_bytes();
+
     pub fn create_pda(
         delegate_role: DelegateRole,
         bump: u8,

test/packages/rust/src/generated/accounts/master_edition_v2.rs

@@ -21,6 +21,17 @@ pub struct MasterEditionV2 {
 impl MasterEditionV2 {
     pub const LEN: usize = 282;
 
+    /// Prefix values used to generate a PDA for this account.
+    ///
+    /// Values are positional and appear in the following order:
+    ///
+    ///   0. `MasterEditionV2::PREFIX.0`
+    ///   1. `crate::MPL_TOKEN_METADATA_ID`
+    ///   2. mint (`Pubkey`)
+    ///   3. `MasterEditionV2::PREFIX.1`
+    pub const PREFIX: (&'static [u8], &'static [u8]) =
+        ("metadata".as_bytes(), "edition".as_bytes());
+
     pub fn create_pda(
         mint: Pubkey,
         bump: u8,

test/packages/rust/src/generated/accounts/metadata.rs

@@ -50,6 +50,15 @@ pub struct Metadata {
 impl Metadata {
     pub const LEN: usize = 679;
 
+    /// Prefix values used to generate a PDA for this account.
+    ///
+    /// Values are positional and appear in the following order:
+    ///
+    ///   0. `Metadata::PREFIX`
+    ///   1. `crate::MPL_TOKEN_METADATA_ID`
+    ///   2. mint (`Pubkey`)
+    pub const PREFIX: &'static [u8] = "metadata".as_bytes();
+
     pub fn create_pda(
         mint: Pubkey,
         bump: u8,