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83 lines
2.9 KiB
Rust
83 lines
2.9 KiB
Rust
use crate::lib::std::string::String;
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#[cfg(feature = "std")]
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use thiserror::Error;
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// Compilation Errors
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//
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// If `std` feature is enable, we can't use `thiserror` until
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// https://github.com/dtolnay/thiserror/pull/64 is merged.
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/// The WebAssembly.CompileError object indicates an error during
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/// WebAssembly decoding or validation.
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///
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/// This is based on the [Wasm Compile Error][compile-error] API.
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///
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/// [compiler-error]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/CompileError
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#[derive(Debug)]
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#[cfg_attr(feature = "std", derive(Error))]
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pub enum CompileError {
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/// A Wasm translation error occured.
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#[cfg_attr(feature = "std", error("WebAssembly translation error: {0}"))]
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Wasm(WasmError),
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/// A compilation error occured.
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#[cfg_attr(feature = "std", error("Compilation error: {0}"))]
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Codegen(String),
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/// The module did not pass validation.
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#[cfg_attr(feature = "std", error("Validation error: {0}"))]
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Validate(String),
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/// The compiler doesn't support a Wasm feature
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#[cfg_attr(feature = "std", error("Feature {0} is not yet supported"))]
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UnsupportedFeature(String),
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/// The compiler cannot compile for the given target.
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/// This can refer to the OS, the chipset or any other aspect of the target system.
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#[cfg_attr(feature = "std", error("The target {0} is not yet supported (see https://docs.wasmer.io/ecosystem/wasmer/wasmer-features)"))]
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UnsupportedTarget(String),
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/// Insufficient resources available for execution.
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#[cfg_attr(feature = "std", error("Insufficient resources: {0}"))]
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Resource(String),
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}
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impl From<WasmError> for CompileError {
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fn from(original: WasmError) -> Self {
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Self::Wasm(original)
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}
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}
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/// A WebAssembly translation error.
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///
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/// When a WebAssembly function can't be translated, one of these error codes will be returned
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/// to describe the failure.
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#[derive(Debug)]
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#[cfg_attr(feature = "std", derive(Error))]
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pub enum WasmError {
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/// The input WebAssembly code is invalid.
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///
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/// This error code is used by a WebAssembly translator when it encounters invalid WebAssembly
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/// code. This should never happen for validated WebAssembly code.
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#[cfg_attr(
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feature = "std",
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error("Invalid input WebAssembly code at offset {offset}: {message}")
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)]
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InvalidWebAssembly {
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/// A string describing the validation error.
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message: String,
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/// The bytecode offset where the error occurred.
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offset: usize,
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},
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/// A feature used by the WebAssembly code is not supported by the embedding environment.
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///
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/// Embedding environments may have their own limitations and feature restrictions.
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#[cfg_attr(feature = "std", error("Unsupported feature: {0}"))]
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Unsupported(String),
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/// A generic error.
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#[cfg_attr(feature = "std", error("{0}"))]
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Generic(String),
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}
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