safe_token/
lib.rs

1#![allow(clippy::integer_arithmetic)]
2#![deny(missing_docs)]
3#![cfg_attr(not(test), forbid(unsafe_code))]
4
5//! An ERC20-like Token program for the Safecoin blockchain
6
7pub mod error;
8pub mod instruction;
9pub mod native_mint;
10pub mod processor;
11pub mod state;
12
13#[cfg(not(feature = "no-entrypoint"))]
14mod entrypoint;
15
16// Export current sdk types for downstream users building with a different sdk version
17pub use solana_program;
18use solana_program::{entrypoint::ProgramResult, program_error::ProgramError, pubkey::Pubkey};
19
20/// Convert the UI representation of a token amount (using the decimals field defined in its mint)
21/// to the raw amount
22pub fn ui_amount_to_amount(ui_amount: f64, decimals: u8) -> u64 {
23    (ui_amount * 10_usize.pow(decimals as u32) as f64) as u64
24}
25
26/// Convert a raw amount to its UI representation (using the decimals field defined in its mint)
27pub fn amount_to_ui_amount(amount: u64, decimals: u8) -> f64 {
28    amount as f64 / 10_usize.pow(decimals as u32) as f64
29}
30
31/// Convert a raw amount to its UI representation (using the decimals field defined in its mint)
32pub fn amount_to_ui_amount_string(amount: u64, decimals: u8) -> String {
33    let decimals = decimals as usize;
34    if decimals > 0 {
35        // Left-pad zeros to decimals + 1, so we at least have an integer zero
36        let mut s = format!("{:01$}", amount, decimals + 1);
37        // Add the decimal point (Sorry, "," locales!)
38        s.insert(s.len() - decimals, '.');
39        s
40    } else {
41        amount.to_string()
42    }
43}
44
45/// Convert a raw amount to its UI representation using the given decimals field
46/// Excess zeroes or unneeded decimal point are trimmed.
47pub fn amount_to_ui_amount_string_trimmed(amount: u64, decimals: u8) -> String {
48    let mut s = amount_to_ui_amount_string(amount, decimals);
49    if decimals > 0 {
50        let zeros_trimmed = s.trim_end_matches('0');
51        s = zeros_trimmed.trim_end_matches('.').to_string();
52    }
53    s
54}
55
56/// Try to convert a UI representation of a token amount to its raw amount using the given decimals
57/// field
58pub fn try_ui_amount_into_amount(ui_amount: String, decimals: u8) -> Result<u64, ProgramError> {
59    let decimals = decimals as usize;
60    let mut parts = ui_amount.split('.');
61    let mut amount_str = parts.next().unwrap().to_string(); // splitting a string, even an empty one, will always yield an iterator of at least length == 1
62    let after_decimal = parts.next().unwrap_or("");
63    let after_decimal = after_decimal.trim_end_matches('0');
64    if (amount_str.is_empty() && after_decimal.is_empty())
65        || parts.next().is_some()
66        || after_decimal.len() > decimals
67    {
68        return Err(ProgramError::InvalidArgument);
69    }
70
71    amount_str.push_str(after_decimal);
72    for _ in 0..decimals.saturating_sub(after_decimal.len()) {
73        amount_str.push('0');
74    }
75    amount_str
76        .parse::<u64>()
77        .map_err(|_| ProgramError::InvalidArgument)
78}
79
80solana_program::declare_id!("ToKLx75MGim1d1jRusuVX8xvdvvbSDESVaNXpRA9PHN");
81
82/// Checks that the supplied program ID is the correct one for SPL-token
83pub fn check_program_account(safe_token_program_id: &Pubkey) -> ProgramResult {
84    if safe_token_program_id != &id() {
85        return Err(ProgramError::IncorrectProgramId);
86    }
87    Ok(())
88}
safe_token/lib.rs

safe_token/
lib.rs
