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denoland-deno/cli/errors.rs
Bartek Iwańczuk 2e74f164b6
refactor: deno_runtime crate (#8640)
This commit moves Deno JS runtime, ops, permissions and
inspector implementation to new "deno_runtime" crate located
in "runtime/" directory.

Details in "runtime/README.md".

Co-authored-by: Ryan Dahl <ry@tinyclouds.org>
2020-12-13 19:45:53 +01:00

37 lines
1.3 KiB
Rust

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
//! There are many types of errors in Deno:
//! - AnyError: a generic wrapper that can encapsulate any type of error.
//! - JsError: a container for the error message and stack trace for exceptions
//! thrown in JavaScript code. We use this to pretty-print stack traces.
//! - Diagnostic: these are errors that originate in TypeScript's compiler.
//! They're similar to JsError, in that they have line numbers. But
//! Diagnostics are compile-time type errors, whereas JsErrors are runtime
//! exceptions.
use crate::ast::DiagnosticBuffer;
use crate::import_map::ImportMapError;
use deno_core::error::AnyError;
fn get_import_map_error_class(_: &ImportMapError) -> &'static str {
"URIError"
}
fn get_diagnostic_class(_: &DiagnosticBuffer) -> &'static str {
"SyntaxError"
}
pub(crate) fn get_error_class_name(e: &AnyError) -> &'static str {
deno_runtime::errors::get_error_class_name(e)
.or_else(|| {
e.downcast_ref::<ImportMapError>()
.map(get_import_map_error_class)
})
.or_else(|| {
e.downcast_ref::<DiagnosticBuffer>()
.map(get_diagnostic_class)
})
.unwrap_or_else(|| {
panic!("Error '{}' contains boxed error of unknown type", e);
})
}