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#![cfg(feature = "debugging")]
use crate::def_package;
use crate::plugin::*;
#[cfg(feature = "no_std")]
use std::prelude::v1::*;
#[cfg(not(feature = "no_function"))]
#[cfg(not(feature = "no_index"))]
use crate::{Array, Dynamic, NativeCallContext};
#[cfg(not(feature = "no_function"))]
#[cfg(not(feature = "no_index"))]
#[cfg(not(feature = "no_object"))]
use crate::Map;
def_package! {
/// Package of basic debugging utilities.
pub DebuggingPackage(lib) {
lib.set_standard_lib(true);
combine_with_exported_module!(lib, "debugging", debugging_functions);
}
}
#[export_module]
mod debugging_functions {
/// Get an array of object maps containing the function calls stack.
///
/// If there is no debugging interface registered, an empty array is returned.
///
/// An array of strings is returned under `no_object`.
#[cfg(not(feature = "no_function"))]
#[cfg(not(feature = "no_index"))]
pub fn back_trace(ctx: NativeCallContext) -> Array {
use crate::debugger::CallStackFrame;
ctx.global_runtime_state()
.debugger
.as_ref()
.map_or_else(Array::new, |debugger| {
debugger
.call_stack()
.iter()
.rev()
.filter(|CallStackFrame { fn_name, args, .. }| {
fn_name != "back_trace" || !args.is_empty()
})
.map(
|frame @ CallStackFrame {
fn_name: _fn_name,
args: _args,
source: _source,
pos: _pos,
}| {
let display = frame.to_string();
#[cfg(not(feature = "no_object"))]
{
use crate::INT;
let mut map = Map::new();
map.insert("display".into(), display.into());
map.insert("fn_name".into(), _fn_name.into());
if !_args.is_empty() {
map.insert("args".into(), _args.iter().cloned().collect());
}
if let Some(source) = _source {
map.insert("source".into(), source.into());
}
if !_pos.is_none() {
map.insert("line".into(), (_pos.line().unwrap() as INT).into());
map.insert(
"position".into(),
(_pos.position().unwrap_or(0) as INT).into(),
);
}
Dynamic::from_map(map)
}
#[cfg(feature = "no_object")]
display.into()
},
)
.collect()
})
}
}