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[pitboss/grind] deferred session-0017 (20260517T044708Z-e058)

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pitboss 2026-05-17 06:20:10 -05:00
parent 5b90a67f5c
commit 5b4181e4dd
14 changed files with 489 additions and 131 deletions
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42
src/dynamic/lang/python.rs
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@ -23,7 +23,7 @@
//! - Other slots produce [`UnsupportedReason::PayloadSlotUnsupported`].
use crate::dynamic::environment::{Environment, RuntimeArtifacts};
use crate::dynamic::lang::{ChainStepHarness, HarnessSource, LangEmitter};
use crate::dynamic::lang::{ChainStepHarness, ChainStepTerminal, HarnessSource, LangEmitter};
use crate::dynamic::spec::{EntryKind, HarnessSpec, PayloadSlot};
use crate::evidence::UnsupportedReason;
use crate::utils::project::DetectedFramework;
@ -66,20 +66,38 @@ impl LangEmitter for PythonEmitter {
materialize_python(env)
}
fn compose_chain_step(&self, prev_output: Option<&[u8]>) -> ChainStepHarness {
chain_step(prev_output)
fn compose_chain_step(
&self,
prev_output: Option<&[u8]>,
terminal: Option<&ChainStepTerminal>,
) -> ChainStepHarness {
chain_step(prev_output, terminal)
}
}
/// Phase 26 — Python chain-step harness.
///
/// Splices the Python probe shim ([`probe_shim`]) in front of a minimal
/// driver that reads `NYX_PREV_OUTPUT` and forwards it on stdout. The
/// composite re-verifier swaps the trailing forward for the next member's
/// payload-injection prologue when running a multi-step chain.
fn chain_step(prev_output: Option<&[u8]>) -> ChainStepHarness {
/// driver that reads `NYX_PREV_OUTPUT` and forwards it on stdout. When
/// `terminal` is `Some`, the driver also calls `__nyx_probe(callee,
/// prev)` so the spliced shim records a witness, then prints the
/// [`ChainStepHarness::SINK_HIT_SENTINEL`] so the runner flips
/// `sink_hit` on the terminal step.
fn chain_step(
prev_output: Option<&[u8]>,
terminal: Option<&ChainStepTerminal>,
) -> ChainStepHarness {
let probe = probe_shim();
let driver = "\nimport os, sys\nprev = os.environ.get('NYX_PREV_OUTPUT', '')\nsys.stdout.write(prev)\nsys.stdout.flush()\n";
let mut driver = String::from(
"\nimport os, sys\nprev = os.environ.get('NYX_PREV_OUTPUT', '')\nsys.stdout.write(prev)\nsys.stdout.flush()\n",
);
if let Some(t) = terminal {
let callee = python_string_literal(&t.sink_callee);
driver.push_str(&format!(
"__nyx_probe({callee}, prev)\nprint({sentinel}, flush=True)\n",
sentinel = python_string_literal(ChainStepHarness::SINK_HIT_SENTINEL),
));
}
ChainStepHarness {
source: format!("{probe}{driver}"),
filename: "step.py".to_owned(),
@ -96,6 +114,14 @@ fn chain_step(prev_output: Option<&[u8]>) -> ChainStepHarness {
}
}
/// Escape a string for safe Python single-quoted literal embedding.
/// Conservative: backslash + single-quote escape only; bytes outside
/// printable ASCII are left to Python's UTF-8 source decoder.
fn python_string_literal(s: &str) -> String {
let escaped = s.replace('\\', "\\\\").replace('\'', "\\'");
format!("'{escaped}'")
}
// ── Phase 12: shape detector ─────────────────────────────────────────────────
/// Concrete per-file shape resolved by reading the entry source.