Merge api/program into single units (#7061)

programs/move_loader/src/error_mappers.rs

@@ -0,0 +1,47 @@
+//! Mapping functions to Instruction errors
+
+use log::*;
+use solana_sdk::instruction::InstructionError;
+use std::convert::TryInto;
+use types::vm_error::{StatusCode, VMStatus};
+use vm::file_format::CompiledModule;
+
+#[allow(clippy::needless_pass_by_value)]
+pub fn map_data_error(err: std::boxed::Box<bincode::ErrorKind>) -> InstructionError {
+    debug!("Error: Account data: {:?}", err);
+    match err.as_ref() {
+        bincode::ErrorKind::SizeLimit => InstructionError::AccountDataTooSmall,
+        _ => InstructionError::InvalidAccountData,
+    }
+}
+
+#[allow(clippy::needless_pass_by_value)]
+pub fn map_json_error(err: serde_json::error::Error) -> InstructionError {
+    debug!("Error: serde_json: {:?}", err);
+    InstructionError::InvalidAccountData
+}
+
+pub fn map_vm_verification_error(err: (CompiledModule, Vec<VMStatus>)) -> InstructionError {
+    debug!("Error: Script verification failed: {:?}", err.1);
+    InstructionError::InvalidInstructionData
+}
+
+#[allow(clippy::needless_pass_by_value)]
+pub fn missing_account() -> InstructionError {
+    debug!("Error: Missing account");
+    InstructionError::InvalidAccountData
+}
+
+pub fn map_failure_error(err: failure::Error) -> InstructionError {
+    debug!("Error: Script verification failed: {:?}", err);
+    InstructionError::InvalidInstructionData
+}
+
+pub fn map_err_vm_status(status: VMStatus) -> InstructionError {
+    // Attempt to map the StatusCode (repr(u64)) to a u32 for CustomError.
+    // The only defined StatusCode that fails is StatusCode::UNKNOWN_ERROR
+    match <StatusCode as Into<u64>>::into(status.major_status).try_into() {
+        Ok(u) => InstructionError::CustomError(u),
+        Err(_) => InstructionError::GenericError,
+    }
+}