41 lines
1.1 KiB
Rust
41 lines
1.1 KiB
Rust
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use std::panic::{self, Location, PanicHookInfo};
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use annotate_snippets::{Level, Renderer, Snippet};
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use smallvec::SmallVec;
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use crate::{NativeFunctionError, Value, ValueRef, Vm};
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pub fn panic(
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vm: &Vm,
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arguments: SmallVec<[ValueRef; 4]>,
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) -> Result<Option<Value>, NativeFunctionError> {
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let mut message = String::new();
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for value_ref in arguments {
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let string = match value_ref.display(vm) {
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Ok(string) => string,
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Err(error) => return Err(NativeFunctionError::Vm(Box::new(error))),
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};
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message.push_str(&string);
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}
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let position = vm.current_position();
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let error_output = Level::Error.title("Explicit Panic").snippet(
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Snippet::source(vm.source()).fold(false).annotation(
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Level::Error
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.span(position.0..position.1)
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.label("Explicit panic occured here"),
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),
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);
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let renderer = Renderer::plain();
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let report = renderer.render(error_output).to_string();
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panic::set_hook(Box::new(move |_| {
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println!("{}", report);
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println!("Panic Message: {}", message);
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}));
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panic!();
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}
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