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feat(code-mode): add io.write helper

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Expose a host-mediated io.write primitive in Code Mode that writes serializable text or bytes to env://current paths via the core harness.

Co-authored-by: Codex <noreply@openai.com>
This commit is contained in:
Liang-Ting Jiang
2026-05-12 08:14:29 +00:00
co-authored by Codex
parent 25c7e752f8
commit f1815041e4
8 changed files with 275 additions and 0 deletions
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codex-rs/code-mode/src/runtime/globals.rs
+17
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@@ -2,6 +2,7 @@ use super::RuntimeState;
use super::callbacks::clear_timeout_callback;
use super::callbacks::exit_callback;
use super::callbacks::image_callback;
use super::callbacks::io_write_callback;
use super::callbacks::load_callback;
use super::callbacks::notify_callback;
use super::callbacks::set_timeout_callback;
@@ -19,6 +20,7 @@ pub(super) fn install_globals(scope: &mut v8::PinScope<'_, '_>) -> Result<(), St
let tools = build_tools_object(scope)?;
let all_tools = build_all_tools_value(scope)?;
let io = build_io_object(scope)?;
let clear_timeout = helper_function(scope, "clearTimeout", clear_timeout_callback)?;
let set_timeout = helper_function(scope, "setTimeout", set_timeout_callback)?;
let text = helper_function(scope, "text", text_callback)?;
@@ -30,6 +32,7 @@ pub(super) fn install_globals(scope: &mut v8::PinScope<'_, '_>) -> Result<(), St
let exit = helper_function(scope, "exit", exit_callback)?;
set_global(scope, global, "tools", tools.into())?;
set_global(scope, global, "io", io.into())?;
set_global(scope, global, "ALL_TOOLS", all_tools)?;
set_global(scope, global, "clearTimeout", clear_timeout.into())?;
set_global(scope, global, "setTimeout", set_timeout.into())?;
@@ -43,6 +46,20 @@ pub(super) fn install_globals(scope: &mut v8::PinScope<'_, '_>) -> Result<(), St
Ok(())
}
fn build_io_object<'s>(
scope: &mut v8::PinScope<'s, '_>,
) -> Result<v8::Local<'s, v8::Object>, String> {
let io = v8::Object::new(scope);
let write_key = v8::String::new(scope, "write")
.ok_or_else(|| "failed to allocate io.write key".to_string())?;
let write = helper_function(scope, "io.write", io_write_callback)?;
if io.set(scope, write_key.into(), write.into()) == Some(true) {
Ok(io)
} else {
Err("failed to set io.write".to_string())
}
}
fn build_tools_object<'s>(
scope: &mut v8::PinScope<'s, '_>,
) -> Result<v8::Local<'s, v8::Object>, String> {