From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/rust/jsparagus-emitter/src/dis.rs | 34 +++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 third_party/rust/jsparagus-emitter/src/dis.rs (limited to 'third_party/rust/jsparagus-emitter/src/dis.rs') diff --git a/third_party/rust/jsparagus-emitter/src/dis.rs b/third_party/rust/jsparagus-emitter/src/dis.rs new file mode 100644 index 0000000000..f9978b8d9c --- /dev/null +++ b/third_party/rust/jsparagus-emitter/src/dis.rs @@ -0,0 +1,34 @@ +use std::convert::TryFrom; +use std::fmt::Write; +use stencil::opcode::Opcode; + +/// Return a string form of the given bytecode. +pub fn dis(bc: &[u8]) -> String { + let mut result = String::new(); + let mut iter = bc.iter(); + let mut offset = 0; + loop { + let len = match iter.next() { + Some(byte) => match Opcode::try_from(*byte) { + Ok(op) => { + write!(&mut result, "{}", format!("{:05}: {:?}", offset, op)).unwrap(); + offset = offset + op.instruction_length(); + op.instruction_length() + } + Err(()) => { + write!(&mut result, "{}", byte).unwrap(); + 1 + } + }, + None => break, + }; + + for _ in 1..len { + write!(&mut result, " {}", iter.next().unwrap()).unwrap(); + } + + writeln!(&mut result).unwrap(); + } + + result +} -- cgit v1.2.3