1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
use crate::idl::Idl;
use quote::{format_ident, ToTokens};
use syn::{parse_quote, parse_str};
/// Generates `program_client`'s `lib.rs` from [Idl] created from Anchor programs.
///
/// _Note_: See the crate's tests for output example.
pub fn generate_source_code(idl: Idl) -> String {
let mut output = "// DO NOT EDIT - automatically generated file\n".to_owned();
let code = idl
.programs
.into_iter()
.map(|idl_program| {
let instruction_module_name =
format_ident!("{}_instruction", idl_program.name.snake_case);
let module_name: syn::Ident = parse_str(&idl_program.name.snake_case).unwrap();
let pubkey_bytes: syn::ExprArray = parse_str(&idl_program.id).unwrap();
let instructions = idl_program
.instruction_account_pairs
.into_iter()
.fold(
Vec::new(),
|mut instructions, (idl_instruction, idl_account_group)| {
let instruction_fn_name: syn::Ident =
parse_str(&idl_instruction.name.snake_case).unwrap();
let instruction_struct_name: syn::Ident =
parse_str(&idl_instruction.name.upper_camel_case).unwrap();
let account_struct_name: syn::Ident =
parse_str(&idl_account_group.name.upper_camel_case).unwrap();
let instruction_name: syn::Ident =
parse_str(&(idl_instruction.name.snake_case + "_ix")).unwrap();
let parameters = idl_instruction
.parameters
.iter()
.map(|(name, ty)| {
let name = format_ident!("i_{name}");
let ty: syn::Type = parse_str(ty).unwrap();
let parameter: syn::FnArg = parse_quote!(#name: #ty);
parameter
})
.collect::<Vec<_>>();
let accounts = idl_account_group
.accounts
.iter()
.map(|(name, ty)| {
let name = format_ident!("a_{name}");
let ty: syn::Type = parse_str(ty).unwrap();
let account: syn::FnArg = parse_quote!(#name: #ty);
account
})
.collect::<Vec<_>>();
let field_parameters = idl_instruction
.parameters
.iter()
.map(|(name, _)| {
let name: syn::Ident = parse_str(name).unwrap();
let value = format_ident!("i_{name}");
let parameter: syn::FieldValue = parse_quote!(#name: #value);
parameter
})
.collect::<Vec<_>>();
let field_accounts = idl_account_group
.accounts
.iter()
.map(|(name, _)| {
let name: syn::Ident = parse_str(name).unwrap();
let value = format_ident!("a_{name}");
let account: syn::FieldValue = parse_quote!(#name: #value);
account
})
.collect::<Vec<_>>();
let instruction: syn::ItemFn = parse_quote! {
pub async fn #instruction_fn_name(
client: &Client,
#(#parameters,)*
#(#accounts,)*
signers: impl IntoIterator<Item = Keypair> + Send + 'static,
) -> Result<EncodedConfirmedTransaction, ClientError> {
Ok(client.send_instruction(
PROGRAM_ID,
#module_name::instruction::#instruction_struct_name {
#(#field_parameters,)*
},
#module_name::accounts::#account_struct_name {
#(#field_accounts,)*
},
signers,
).await?)
}
};
let instruction_raw: syn::ItemFn = parse_quote! {
pub fn #instruction_name(
#(#parameters,)*
#(#accounts,)*
) -> Instruction {
Instruction{
program_id: PROGRAM_ID,
data: #module_name::instruction::#instruction_struct_name {
#(#field_parameters,)*
}.data(),
accounts: #module_name::accounts::#account_struct_name {
#(#field_accounts,)*
}.to_account_metas(None),
}
}
};
instructions.push(instruction);
instructions.push(instruction_raw);
instructions
},
)
.into_iter();
let program_module: syn::ItemMod = parse_quote! {
pub mod #instruction_module_name {
use trdelnik_client::*;
pub static PROGRAM_ID: Pubkey = Pubkey::new_from_array(#pubkey_bytes);
#(#instructions)*
}
};
program_module.into_token_stream().to_string()
})
.collect::<String>();
output.push_str(&code);
output
}