Enum WasmError 

pub enum WasmError {
    ManifestError(String),
    WasmError {
        context: &'static str,
        message: String,
    },
    GetFuncTypedError {
        context: &'static str,
        func_name: String,
        expected_params: String,
        expected_result: String,
        err: Error,
    },
}

WebAssembly Error Types

WasmError represents the various errors that can occur during WebAssembly operations in the Theater system. These errors provide context about what operation failed and why.

Purpose

This enum centralizes error handling for WebAssembly-related operations, providing detailed context to help diagnose issues during component loading, instantiation, and function calls. Each variant includes context about where the error occurred.

Example

use theater::WasmError;
use anyhow::Result;

fn handle_wasm_operation() -> Result<(), WasmError> {
    // Simulate a function call that might fail
    let call_failed = true; // Example condition
    if call_failed {
        return Err(WasmError::WasmError {
            context: "function_call",
            message: "Failed to call 'greet' function".to_string(),
        });
    }
    Ok(())
}

Implementation Notes

These errors are typically converted to anyhow::Error before being propagated to the caller, but the contextual information is preserved.

Variants

ManifestError(String)

WasmError

Fields

context: &'static str

message: String

GetFuncTypedError

Fields

context: &'static str

func_name: String

expected_params: String

expected_result: String

err: Error

Trait Implementations

impl Debug for WasmError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for WasmError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for WasmError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.