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Uniswap V2 / constant-product AMM implemented in Solana's Anchor -- add and remove liquidity, swap tokens, earn fees! :D
Hi,
I have checked and run your source code it's working fine on localnet. When i am integrating with frontend on devnet i can't able to initialize the pool. I have integrating which is like in testcase.
error: failed to send transaction: Transaction simulation failed: Error processing Instruction 2: Program failed to complete.
I don't know why the issue is occurs. Please provide a solution.
In the add_liquidity
function in liquidity.rs
, we have ->
...
let exchange01 = vault_balance0.checked_div(vault_balance1).unwrap();
let amount_deposit_1 = amount_liq0.checked_mul(exchange01).unwrap();
...
deposit1 = amount_deposit_1; // update liquidity amount !
However, In the add_liquidity
function in draft.rs
, to derive the user_liq1
by using user_liq0
, the following is mentioned
...
// define: depo_user_liq1 = user_liq0 * pool_balance1 / pool_balance0
...
I think that the exchange rate in liquidity.rs
let exchange01 = vault_balance0.checked_div(vault_balance1).unwrap();
should be changed to
let exchange01 = vault_balance1.checked_div(vault_balance0).unwrap();
Hi, when I trying to build the project I got this issues.
error: target is not supported, for more information see: https://docs.rs/getrandom/#unsupported-targets
--> src/lib.rs:267:9
|
267 | / compile_error!("
268 | | target is not supported, for more information see:
269 | | https://docs.rs/getrandom/#unsupported-targets\
270 | | ");
| |__________^
Compiling ahash v0.7.6
error[E0433]: failed to resolve: use of undeclared crate or module imp
--> src/lib.rs:291:5
|
291 | imp::getrandom_inner(dest)
| ^^^ use of undeclared crate or module imp
For more information about this error, try rustc --explain E0433
.
error: could not compile getrandom
(lib) due to 2 previous errors
warning: build failed, waiting for other jobs to finish...
error[E0422]: cannot find struct, variant or union type LineColumn
in crate proc_macro
--> /home/hcrypto/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.36/src/wrapper.rs:485:33
|
485 | let proc_macro::LineColumn { line, column } = s.start();
| ^^^^^^^^^^ not found in proc_macro
|
help: consider importing one of these items
|
1 + use crate::LineColumn;
|
1 + use crate::fallback::LineColumn;
|
help: if you import LineColumn
, refer to it directly
|
485 - let proc_macro::LineColumn { line, column } = s.start();
485 + let LineColumn { line, column } = s.start();
|
error[E0422]: cannot find struct, variant or union type LineColumn
in crate proc_macro
--> /home/hcrypto/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.36/src/wrapper.rs:502:33
|
502 | let proc_macro::LineColumn { line, column } = s.end();
| ^^^^^^^^^^ not found in proc_macro
|
help: consider importing one of these items
|
1 + use crate::LineColumn;
|
1 + use crate::fallback::LineColumn;
|
help: if you import LineColumn
, refer to it directly
|
502 - let proc_macro::LineColumn { line, column } = s.end();
502 + let LineColumn { line, column } = s.end();
|
For more information about this error, try rustc --explain E0422
.
error: could not compile proc-macro2
(lib) due to 2 previous errors
How to fix this problems?
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