664 lines
21 KiB
Rust
664 lines
21 KiB
Rust
use crate::{
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CompositeField, Constraint, ConstraintAddress, ConstraintAssociatedGroup, ConstraintBelongsTo,
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ConstraintClose, ConstraintExecutable, ConstraintGroup, ConstraintInit, ConstraintLiteral,
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ConstraintMut, ConstraintOwner, ConstraintRaw, ConstraintRentExempt, ConstraintSeedsGroup,
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ConstraintSigner, ConstraintState, Field, PdaKind, Ty,
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};
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use proc_macro2_diagnostics::SpanDiagnosticExt;
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use quote::quote;
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use syn::Expr;
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pub fn generate(f: &Field) -> proc_macro2::TokenStream {
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let checks: Vec<proc_macro2::TokenStream> = linearize(&f.constraints)
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.iter()
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.map(|c| generate_constraint(f, c))
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.collect();
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quote! {
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#(#checks)*
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}
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}
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pub fn generate_composite(f: &CompositeField) -> proc_macro2::TokenStream {
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let checks: Vec<proc_macro2::TokenStream> = linearize(&f.constraints)
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.iter()
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.filter_map(|c| match c {
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Constraint::Raw(_) => Some(c),
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Constraint::Literal(_) => Some(c),
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_ => panic!("Invariant violation: composite constraints can only be raw or literals"),
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})
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.map(|c| generate_constraint_composite(f, c))
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.collect();
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quote! {
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#(#checks)*
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}
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}
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// Linearizes the constraint group so that constraints with dependencies
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// run after those without.
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//
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// The associated cosntraint should always be first since it may also create
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// an account with a PDA.
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pub fn linearize(c_group: &ConstraintGroup) -> Vec<Constraint> {
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let ConstraintGroup {
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init,
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mutable,
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signer,
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belongs_to,
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literal,
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raw,
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owner,
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rent_exempt,
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seeds,
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executable,
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state,
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associated,
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close,
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address,
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} = c_group.clone();
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let mut constraints = Vec::new();
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if let Some(c) = associated {
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constraints.push(Constraint::AssociatedGroup(c));
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}
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if let Some(c) = seeds {
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constraints.push(Constraint::Seeds(c));
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}
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if let Some(c) = init {
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constraints.push(Constraint::Init(c));
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}
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if let Some(c) = mutable {
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constraints.push(Constraint::Mut(c));
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}
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if let Some(c) = signer {
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constraints.push(Constraint::Signer(c));
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}
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constraints.append(&mut belongs_to.into_iter().map(Constraint::BelongsTo).collect());
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constraints.append(&mut literal.into_iter().map(Constraint::Literal).collect());
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constraints.append(&mut raw.into_iter().map(Constraint::Raw).collect());
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if let Some(c) = owner {
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constraints.push(Constraint::Owner(c));
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}
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if let Some(c) = rent_exempt {
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constraints.push(Constraint::RentExempt(c));
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}
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if let Some(c) = executable {
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constraints.push(Constraint::Executable(c));
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}
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if let Some(c) = state {
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constraints.push(Constraint::State(c));
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}
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if let Some(c) = close {
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constraints.push(Constraint::Close(c));
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}
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if let Some(c) = address {
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constraints.push(Constraint::Address(c));
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}
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constraints
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}
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fn generate_constraint(f: &Field, c: &Constraint) -> proc_macro2::TokenStream {
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match c {
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Constraint::Init(c) => generate_constraint_init(f, c),
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Constraint::Mut(c) => generate_constraint_mut(f, c),
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Constraint::BelongsTo(c) => generate_constraint_belongs_to(f, c),
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Constraint::Signer(c) => generate_constraint_signer(f, c),
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Constraint::Literal(c) => generate_constraint_literal(c),
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Constraint::Raw(c) => generate_constraint_raw(c),
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Constraint::Owner(c) => generate_constraint_owner(f, c),
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Constraint::RentExempt(c) => generate_constraint_rent_exempt(f, c),
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Constraint::Seeds(c) => generate_constraint_seeds(f, c),
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Constraint::Executable(c) => generate_constraint_executable(f, c),
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Constraint::State(c) => generate_constraint_state(f, c),
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Constraint::AssociatedGroup(c) => generate_constraint_associated(f, c),
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Constraint::Close(c) => generate_constraint_close(f, c),
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Constraint::Address(c) => generate_constraint_address(f, c),
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}
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}
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fn generate_constraint_composite(_f: &CompositeField, c: &Constraint) -> proc_macro2::TokenStream {
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match c {
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Constraint::Raw(c) => generate_constraint_raw(c),
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Constraint::Literal(c) => generate_constraint_literal(c),
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_ => panic!("Invariant violation"),
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}
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}
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fn generate_constraint_address(f: &Field, c: &ConstraintAddress) -> proc_macro2::TokenStream {
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let field = &f.ident;
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let addr = &c.address;
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quote! {
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if #field.to_account_info().key != &#addr {
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return Err(anchor_lang::__private::ErrorCode::ConstraintAddress.into());
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}
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}
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}
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pub fn generate_constraint_init(_f: &Field, _c: &ConstraintInit) -> proc_macro2::TokenStream {
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quote! {}
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}
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pub fn generate_constraint_close(f: &Field, c: &ConstraintClose) -> proc_macro2::TokenStream {
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let field = &f.ident;
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let target = &c.sol_dest;
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quote! {
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if #field.to_account_info().key == #target.to_account_info().key {
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return Err(anchor_lang::__private::ErrorCode::ConstraintClose.into());
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}
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}
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}
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pub fn generate_constraint_mut(f: &Field, _c: &ConstraintMut) -> proc_macro2::TokenStream {
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let ident = &f.ident;
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quote! {
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if !#ident.to_account_info().is_writable {
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return Err(anchor_lang::__private::ErrorCode::ConstraintMut.into());
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}
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}
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}
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pub fn generate_constraint_belongs_to(
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f: &Field,
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c: &ConstraintBelongsTo,
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) -> proc_macro2::TokenStream {
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let target = c.join_target.clone();
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let ident = &f.ident;
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let field = match &f.ty {
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Ty::Loader(_) => quote! {#ident.load()?},
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_ => quote! {#ident},
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};
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quote! {
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if &#field.#target != #target.to_account_info().key {
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return Err(anchor_lang::__private::ErrorCode::ConstraintBelongsTo.into());
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}
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}
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}
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pub fn generate_constraint_signer(f: &Field, _c: &ConstraintSigner) -> proc_macro2::TokenStream {
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let ident = &f.ident;
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let info = match f.ty {
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Ty::AccountInfo => quote! { #ident },
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Ty::ProgramAccount(_) => quote! { #ident.to_account_info() },
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_ => panic!("Invalid syntax: signer cannot be specified."),
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};
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quote! {
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// Don't enforce on CPI, since usually a program is signing and so
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// the `try_accounts` deserializatoin will fail *if* the one
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// tries to manually invoke it.
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//
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// This check will be performed on the other end of the invocation.
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if cfg!(not(feature = "cpi")) {
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if !#info.to_account_info().is_signer {
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return Err(anchor_lang::__private::ErrorCode::ConstraintSigner.into());
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}
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}
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}
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}
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pub fn generate_constraint_literal(c: &ConstraintLiteral) -> proc_macro2::TokenStream {
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let lit: proc_macro2::TokenStream = {
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let lit = &c.lit;
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let constraint = lit.value().replace("\"", "");
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let message = format!(
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"Deprecated. Should be used with constraint: #[account(constraint = {})]",
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constraint,
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);
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lit.span().warning(message).emit_as_item_tokens();
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constraint.parse().unwrap()
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};
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quote! {
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if !(#lit) {
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return Err(anchor_lang::__private::ErrorCode::Deprecated.into());
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}
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}
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}
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pub fn generate_constraint_raw(c: &ConstraintRaw) -> proc_macro2::TokenStream {
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let raw = &c.raw;
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quote! {
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if !(#raw) {
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return Err(anchor_lang::__private::ErrorCode::ConstraintRaw.into());
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}
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}
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}
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pub fn generate_constraint_owner(f: &Field, c: &ConstraintOwner) -> proc_macro2::TokenStream {
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let ident = &f.ident;
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let owner_target = c.owner_target.clone();
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quote! {
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if #ident.to_account_info().owner != #owner_target.to_account_info().key {
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return Err(anchor_lang::__private::ErrorCode::ConstraintOwner.into());
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}
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}
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}
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pub fn generate_constraint_rent_exempt(
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f: &Field,
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c: &ConstraintRentExempt,
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) -> proc_macro2::TokenStream {
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let ident = &f.ident;
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let info = quote! {
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#ident.to_account_info()
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};
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match c {
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ConstraintRentExempt::Skip => quote! {},
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ConstraintRentExempt::Enforce => quote! {
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if !rent.is_exempt(#info.lamports(), #info.try_data_len()?) {
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return Err(anchor_lang::__private::ErrorCode::ConstraintRentExempt.into());
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}
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},
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}
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}
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pub fn generate_constraint_seeds(f: &Field, c: &ConstraintSeedsGroup) -> proc_macro2::TokenStream {
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if c.is_init {
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generate_constraint_seeds_init(f, c)
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} else {
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generate_constraint_seeds_address(f, c)
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}
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}
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fn generate_constraint_seeds_init(f: &Field, c: &ConstraintSeedsGroup) -> proc_macro2::TokenStream {
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let payer = {
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let p = &c.payer;
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quote! {
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let payer = #p.to_account_info();
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}
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};
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let seeds_constraint = generate_constraint_seeds_address(f, c);
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let seeds_with_nonce = {
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let s = &c.seeds;
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quote! {
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[#s]
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}
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};
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generate_pda(
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f,
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seeds_constraint,
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seeds_with_nonce,
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payer,
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&c.space,
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false,
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&c.kind,
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)
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}
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fn generate_constraint_seeds_address(
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f: &Field,
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c: &ConstraintSeedsGroup,
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) -> proc_macro2::TokenStream {
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let name = &f.ident;
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let seeds = &c.seeds;
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quote! {
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let __program_signer = Pubkey::create_program_address(
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&[#seeds],
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program_id,
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).map_err(|_| anchor_lang::__private::ErrorCode::ConstraintSeeds)?;
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if #name.to_account_info().key != &__program_signer {
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return Err(anchor_lang::__private::ErrorCode::ConstraintSeeds.into());
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}
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}
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}
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pub fn generate_constraint_associated(
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f: &Field,
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c: &ConstraintAssociatedGroup,
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) -> proc_macro2::TokenStream {
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if c.is_init {
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generate_constraint_associated_init(f, c)
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} else {
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generate_constraint_associated_seeds(f, c)
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}
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}
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pub fn generate_constraint_associated_init(
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f: &Field,
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c: &ConstraintAssociatedGroup,
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) -> proc_macro2::TokenStream {
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let associated_target = c.associated_target.clone();
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let payer = match &c.payer {
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None => quote! {
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let payer = #associated_target.to_account_info();
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},
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Some(p) => quote! {
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let payer = #p.to_account_info();
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},
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};
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let seeds_constraint = generate_constraint_associated_seeds(f, c);
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let seeds_with_nonce = {
|
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if c.associated_seeds.is_empty() {
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quote! {
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[
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&b"anchor"[..],
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#associated_target.to_account_info().key.as_ref(),
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&[nonce],
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]
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}
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} else {
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let seeds = to_seeds_tts(&c.associated_seeds);
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quote! {
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[
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&b"anchor"[..],
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#associated_target.to_account_info().key.as_ref(),
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#seeds
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&[nonce],
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]
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}
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}
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};
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generate_pda(
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f,
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seeds_constraint,
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seeds_with_nonce,
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payer,
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&c.space,
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true,
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&c.kind,
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)
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}
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fn parse_ty(f: &Field) -> (&syn::Ident, proc_macro2::TokenStream, bool) {
|
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match &f.ty {
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Ty::ProgramAccount(ty) => (
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&ty.account_ident,
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quote! {
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anchor_lang::ProgramAccount
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},
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false,
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),
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Ty::Loader(ty) => (
|
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&ty.account_ident,
|
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quote! {
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anchor_lang::Loader
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},
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true,
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),
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Ty::CpiAccount(ty) => (
|
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&ty.account_ident,
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quote! {
|
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anchor_lang::CpiAccount
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},
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false,
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),
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_ => panic!("Invalid type for initializing a program derived address"),
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}
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}
|
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pub fn generate_pda(
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f: &Field,
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seeds_constraint: proc_macro2::TokenStream,
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seeds_with_nonce: proc_macro2::TokenStream,
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payer: proc_macro2::TokenStream,
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space: &Option<Expr>,
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assign_nonce: bool,
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kind: &PdaKind,
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) -> proc_macro2::TokenStream {
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let field = &f.ident;
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let (account_ty, account_wrapper_ty, is_zero_copy) = parse_ty(f);
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let space = match space {
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// If no explicit space param was given, serialize the type to bytes
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// and take the length (with +8 for the discriminator.)
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None => match is_zero_copy {
|
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false => {
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quote! {
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let space = 8 + #account_ty::default().try_to_vec().unwrap().len();
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}
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}
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true => {
|
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quote! {
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let space = 8 + anchor_lang::__private::bytemuck::bytes_of(&#account_ty::default()).len();
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}
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}
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},
|
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// Explicit account size given. Use it.
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Some(s) => quote! {
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let space = #s;
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},
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};
|
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|
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let nonce_assignment = match assign_nonce {
|
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false => quote! {},
|
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true => match &f.ty {
|
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Ty::CpiAccount(_) => quote! {},
|
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_ => match is_zero_copy {
|
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false => quote! {
|
|
pa.__nonce = nonce;
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},
|
|
// Zero copy is not deserialized, so the data must be lazy loaded.
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true => quote! {
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pa.load_init()?.__nonce = nonce;
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},
|
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},
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},
|
|
};
|
|
|
|
match kind {
|
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PdaKind::Token { owner, mint } => quote! {
|
|
let #field: #account_wrapper_ty<#account_ty> = {
|
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#space
|
|
#payer
|
|
#seeds_constraint
|
|
|
|
// Fund the account for rent exemption.
|
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let required_lamports = rent
|
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.minimum_balance(anchor_spl::token::TokenAccount::LEN)
|
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.max(1)
|
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.saturating_sub(#field.to_account_info().lamports());
|
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if required_lamports > 0 {
|
|
anchor_lang::solana_program::program::invoke(
|
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&anchor_lang::solana_program::system_instruction::transfer(
|
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payer.to_account_info().key,
|
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#field.to_account_info().key,
|
|
required_lamports,
|
|
),
|
|
&[
|
|
payer.to_account_info(),
|
|
#field.to_account_info(),
|
|
system_program.to_account_info().clone(),
|
|
],
|
|
)?;
|
|
}
|
|
|
|
// Allocate space.
|
|
anchor_lang::solana_program::program::invoke_signed(
|
|
&anchor_lang::solana_program::system_instruction::allocate(
|
|
#field.to_account_info().key,
|
|
anchor_spl::token::TokenAccount::LEN as u64,
|
|
),
|
|
&[
|
|
#field.to_account_info(),
|
|
system_program.clone(),
|
|
],
|
|
&[&#seeds_with_nonce[..]],
|
|
)?;
|
|
|
|
// Assign to the spl token program.
|
|
let __ix = anchor_lang::solana_program::system_instruction::assign(
|
|
#field.to_account_info().key,
|
|
token_program.to_account_info().key,
|
|
);
|
|
anchor_lang::solana_program::program::invoke_signed(
|
|
&__ix,
|
|
&[
|
|
#field.to_account_info(),
|
|
system_program.to_account_info(),
|
|
],
|
|
&[&#seeds_with_nonce[..]],
|
|
)?;
|
|
|
|
// Initialize the token account.
|
|
let cpi_program = token_program.to_account_info();
|
|
let accounts = anchor_spl::token::InitializeAccount {
|
|
account: #field.to_account_info(),
|
|
mint: #mint.to_account_info(),
|
|
authority: #owner.to_account_info(),
|
|
rent: rent.to_account_info(),
|
|
};
|
|
let cpi_ctx = CpiContext::new(cpi_program, accounts);
|
|
anchor_spl::token::initialize_account(cpi_ctx)?;
|
|
anchor_lang::CpiAccount::try_from_init(
|
|
&#field.to_account_info(),
|
|
)?
|
|
};
|
|
},
|
|
PdaKind::Program => {
|
|
quote! {
|
|
let #field: #account_wrapper_ty<#account_ty> = {
|
|
#space
|
|
#payer
|
|
#seeds_constraint
|
|
|
|
let lamports = rent.minimum_balance(space);
|
|
let ix = anchor_lang::solana_program::system_instruction::create_account(
|
|
payer.to_account_info().key,
|
|
#field.to_account_info().key,
|
|
lamports,
|
|
space as u64,
|
|
program_id,
|
|
);
|
|
|
|
|
|
anchor_lang::solana_program::program::invoke_signed(
|
|
&ix,
|
|
&[
|
|
|
|
#field.to_account_info(),
|
|
payer.to_account_info(),
|
|
system_program.to_account_info(),
|
|
],
|
|
&[&#seeds_with_nonce[..]]
|
|
).map_err(|e| {
|
|
anchor_lang::solana_program::msg!("Unable to create associated account");
|
|
e
|
|
})?;
|
|
|
|
// For now, we assume all accounts created with the `associated`
|
|
// attribute have a `nonce` field in their account.
|
|
let mut pa: #account_wrapper_ty<#account_ty> = #account_wrapper_ty::try_from_init(
|
|
&#field.to_account_info(),
|
|
)?;
|
|
|
|
#nonce_assignment
|
|
pa
|
|
};
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn generate_constraint_associated_seeds(
|
|
f: &Field,
|
|
c: &ConstraintAssociatedGroup,
|
|
) -> proc_macro2::TokenStream {
|
|
let field = &f.ident;
|
|
let associated_target = c.associated_target.clone();
|
|
let seeds_no_nonce = if c.associated_seeds.is_empty() {
|
|
quote! {
|
|
&b"anchor"[..],
|
|
#associated_target.to_account_info().key.as_ref(),
|
|
}
|
|
} else {
|
|
let seeds = to_seeds_tts(&c.associated_seeds);
|
|
quote! {
|
|
&b"anchor"[..],
|
|
#associated_target.to_account_info().key.as_ref(),
|
|
#seeds
|
|
}
|
|
};
|
|
|
|
let is_find_nonce = match &f.ty {
|
|
Ty::CpiAccount(_) => true,
|
|
Ty::AccountInfo => true,
|
|
_ => c.is_init,
|
|
};
|
|
let associated_field = if is_find_nonce {
|
|
quote! {
|
|
let (__associated_field, nonce) = Pubkey::find_program_address(
|
|
&[#seeds_no_nonce],
|
|
program_id,
|
|
);
|
|
}
|
|
} else {
|
|
let nonce = match &f.ty {
|
|
Ty::ProgramAccount(_) => quote! { #field.__nonce },
|
|
Ty::Loader(_) => {
|
|
// Zero copy is not deserialized, so the data must be lazy loaded.
|
|
quote! { #field.load()?.__nonce }
|
|
}
|
|
_ => panic!("Invalid type for initializing a program derived address"),
|
|
};
|
|
quote! {
|
|
let __associated_field = Pubkey::create_program_address(
|
|
&[#seeds_no_nonce &[#nonce]],
|
|
program_id,
|
|
)?;
|
|
}
|
|
};
|
|
quote! {
|
|
#associated_field
|
|
if &__associated_field != #field.to_account_info().key {
|
|
return Err(anchor_lang::__private::ErrorCode::ConstraintAssociatedInit.into());
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn generate_constraint_executable(
|
|
f: &Field,
|
|
_c: &ConstraintExecutable,
|
|
) -> proc_macro2::TokenStream {
|
|
let name = &f.ident;
|
|
quote! {
|
|
if !#name.to_account_info().executable {
|
|
return Err(anchor_lang::__private::ErrorCode::ConstraintExecutable.into());
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn generate_constraint_state(f: &Field, c: &ConstraintState) -> proc_macro2::TokenStream {
|
|
let program_target = c.program_target.clone();
|
|
let ident = &f.ident;
|
|
let account_ty = match &f.ty {
|
|
Ty::CpiState(ty) => &ty.account_ident,
|
|
_ => panic!("Invalid state constraint"),
|
|
};
|
|
quote! {
|
|
// Checks the given state account is the canonical state account for
|
|
// the target program.
|
|
if #ident.to_account_info().key != &anchor_lang::CpiState::<#account_ty>::address(#program_target.to_account_info().key) {
|
|
return Err(anchor_lang::__private::ErrorCode::ConstraintState.into());
|
|
}
|
|
if #ident.to_account_info().owner != #program_target.to_account_info().key {
|
|
return Err(anchor_lang::__private::ErrorCode::ConstraintState.into());
|
|
}
|
|
}
|
|
}
|
|
|
|
// Returns the inner part of the seeds slice as a token stream.
|
|
fn to_seeds_tts(seeds: &[syn::Expr]) -> proc_macro2::TokenStream {
|
|
assert!(!seeds.is_empty());
|
|
let seed_0 = &seeds[0];
|
|
let mut tts = match seed_0 {
|
|
syn::Expr::Path(_) => quote! {
|
|
anchor_lang::Key::key(&#seed_0).as_ref(),
|
|
},
|
|
_ => quote! {
|
|
#seed_0,
|
|
},
|
|
};
|
|
for seed in &seeds[1..] {
|
|
tts = match seed {
|
|
syn::Expr::Path(_) => quote! {
|
|
#tts
|
|
anchor_lang::Key::key(&#seed).as_ref(),
|
|
},
|
|
_ => quote! {
|
|
#tts
|
|
#seed,
|
|
},
|
|
};
|
|
}
|
|
tts
|
|
}
|