Initialize the router with factory and XLM addresses Following Uniswap V3's permissionless design
fn init_router(
env: soroban_sdk::Env,
factory: soroban_sdk::Address,
xlm: soroban_sdk::Address,
) -> Result<(), SwapRouterError>Swap exact amount of input tokens for as many output tokens as possible Single hop version
Uses Soroban's authorization framework - no pre-approval needed! The user's signature authorizes both the router call and the pool's token transfers.
fn swap_exact_input_single(
env: soroban_sdk::Env,
params: ExactInputSingleParams,
) -> ResultSwap exact amount of input tokens for as many output tokens as possible Multi-hop version (e.g., Token A → B → C in single transaction)
Uses Soroban's authorization framework for atomic multi-hop swaps. First hop: Pool pulls from user. Subsequent hops: Pools use prefunded tokens.
fn swap_exact_input(
env: soroban_sdk::Env,
params: ExactInputParams,
) -> ResultSwap as few input tokens as possible for exact amount of output tokens Not implemented (requires reverse-path coordination and token custody).
fn swap_exact_output_single(
env: soroban_sdk::Env,
params: ExactOutputSingleParams,
) -> Resultfn swap_exact_output(
env: soroban_sdk::Env,
params: ExactOutputParams,
) -> ResultQuote exact input multi-hop swap without execution Returns the expected output amount
fn quote_exact_input(
env: soroban_sdk::Env,
params: ExactInputParams,
) -> ResultQuote exact output multi-hop swap without execution Returns the required input amount
fn quote_exact_output(
env: soroban_sdk::Env,
params: ExactOutputParams,
) -> ResultQuote single exact input swap without execution
fn quote_exact_input_single(
env: soroban_sdk::Env,
params: ExactInputSingleParams,
) -> ResultQuote single exact output swap without execution NOTE: Not supported in this implementation
fn quote_exact_output_single(
env: soroban_sdk::Env,
params: ExactOutputSingleParams,
) -> Result