From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/tracing-tree/examples/stderr.rs | 40 ++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 vendor/tracing-tree/examples/stderr.rs (limited to 'vendor/tracing-tree/examples/stderr.rs') diff --git a/vendor/tracing-tree/examples/stderr.rs b/vendor/tracing-tree/examples/stderr.rs new file mode 100644 index 000000000..75880a376 --- /dev/null +++ b/vendor/tracing-tree/examples/stderr.rs @@ -0,0 +1,40 @@ +use tracing::{debug, info, instrument}; +use tracing_subscriber::{layer::SubscriberExt, registry::Registry}; +use tracing_tree::HierarchicalLayer; + +#[instrument] +fn nth_fibonacci(n: u64) -> u64 { + if n == 0 || n == 1 { + debug!("Base case"); + 1 + } else { + debug!("Recursing"); + nth_fibonacci(n - 1) + nth_fibonacci(n - 2) + } +} + +#[instrument] +fn fibonacci_seq(to: u64) -> Vec { + let mut sequence = vec![]; + + for n in 0..=to { + debug!("Pushing {n} fibonacci", n = n); + sequence.push(nth_fibonacci(n)); + } + + sequence +} + +fn main() { + let layer = HierarchicalLayer::default() + .with_indent_lines(true) + .with_indent_amount(2) + .with_bracketed_fields(true); + + let subscriber = Registry::default().with(layer); + tracing::subscriber::set_global_default(subscriber).unwrap(); + + let n = 5; + let sequence = fibonacci_seq(n); + info!("The first {} fibonacci numbers are {:?}", n, sequence); +} -- cgit v1.2.3