From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Fri, 19 Apr 2024 02:47:55 +0200
Subject: Adding upstream version 124.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 third_party/rust/diplomat-runtime/src/wasm_glue.rs | 94 ++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 third_party/rust/diplomat-runtime/src/wasm_glue.rs

(limited to 'third_party/rust/diplomat-runtime/src/wasm_glue.rs')

diff --git a/third_party/rust/diplomat-runtime/src/wasm_glue.rs b/third_party/rust/diplomat-runtime/src/wasm_glue.rs
new file mode 100644
index 0000000000..98a46139a3
--- /dev/null
+++ b/third_party/rust/diplomat-runtime/src/wasm_glue.rs
@@ -0,0 +1,94 @@
+use alloc::format;
+use core::panic::PanicInfo;
+
+#[no_mangle]
+unsafe extern "C" fn diplomat_init() {
+    #[cfg(debug_assertions)]
+    std::panic::set_hook(Box::new(panic_handler));
+    #[cfg(feature = "log")]
+    log::set_logger(&ConsoleLogger)
+        .map(|()| log::set_max_level(log::LevelFilter::Debug))
+        .unwrap();
+}
+
+fn panic_handler(info: &PanicInfo) {
+    let msg = match info.payload().downcast_ref::<&'static str>() {
+        Some(&s) => s,
+        None => match info.payload().downcast_ref::<String>() {
+            Some(s) => s.as_str(),
+            None => "Box<Any>",
+        },
+    };
+
+    let msg = match info.location() {
+        Some(l) => format!(
+            "wasm panicked at {}:{}:{}:\n{msg}",
+            l.file(),
+            l.line(),
+            l.column(),
+        ),
+        None => format!("wasm panicked at <unknown location>:\n{msg}"),
+    };
+
+    extern "C" {
+        fn diplomat_throw_error_js(ptr: *const u8, len: usize);
+    }
+
+    unsafe { diplomat_throw_error_js(msg.as_ptr(), msg.len()) }
+}
+
+#[cfg(feature = "log")]
+struct ConsoleLogger;
+
+#[cfg(feature = "log")]
+impl log::Log for ConsoleLogger {
+    #[inline]
+    fn enabled(&self, metadata: &log::Metadata) -> bool {
+        metadata.level() <= log::max_level()
+    }
+
+    fn log(&self, record: &log::Record) {
+        if !self.enabled(record.metadata()) {
+            return;
+        }
+
+        let out = match record.level() {
+            log::Level::Error => {
+                extern "C" {
+                    fn diplomat_console_error_js(ptr: *const u8, len: usize);
+                }
+                diplomat_console_error_js
+            }
+            log::Level::Warn => {
+                extern "C" {
+                    fn diplomat_console_warn_js(ptr: *const u8, len: usize);
+                }
+                diplomat_console_warn_js
+            }
+            log::Level::Info => {
+                extern "C" {
+                    fn diplomat_console_info_js(ptr: *const u8, len: usize);
+                }
+                diplomat_console_info_js
+            }
+            log::Level::Debug => {
+                extern "C" {
+                    fn diplomat_console_log_js(ptr: *const u8, len: usize);
+                }
+                diplomat_console_log_js
+            }
+            log::Level::Trace => {
+                extern "C" {
+                    fn diplomat_console_debug_js(ptr: *const u8, len: usize);
+                }
+                diplomat_console_debug_js
+            }
+        };
+
+        let msg = alloc::format!("{}", record.args());
+
+        unsafe { out(msg.as_ptr(), msg.len()) };
+    }
+
+    fn flush(&self) {}
+}
-- 
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