mirror of
https://github.com/morluto/rea
synced 2026-10-26 22:28:27 -04:00
morluto
9ac76d3d94
Index unshadowed direct-eval sites once at the semantic owner. Distinguish lexical rebinding, non-strict eval-introduced names, and possible mutation of reachable objects. Reuse existing effect timing and capture proofs; retain original definitions and module origins without inventing assignments or parsing or executing eval payloads. Query object uncertainty conservatively across the owning activation so aliases remain covered when names are shadowed or leave block scope. Retain no binding-by-eval table. Use the shared facts for values, read provenance, reference effects and child argument shapes. Preserve indirect/optional/shadowed eval controls, unrelated activations, immutable shapes, strict-mode bindings and prior primitive captures. Remove obsolete reference plumbing and the source-wide eval blocker. Validation: 306 focused checks across 16 files pass, including compiled CLI and stdio MCP return projections, constructor uncertainty and child-process consumers. Against the preceding SQLite commit, 9 of 23 selected checks fail and 14 controls pass. Static/docs/test discovery (1559 files) pass. Two source reviews found no remaining scoped blocker after alias and sloppy-name fixes. No analyzed JavaScript, SQLite engine, heavy test or profiler was executed. Conservative object reachability can intentionally lose exactness; large-case opaque-query CPU and memory remain unmeasured. Fixes #4875
52 lines
2.9 KiB
TypeScript
52 lines
2.9 KiB
TypeScript
import { expect, it } from "vitest";
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import { analyzeJavaScriptSemantics } from "./javascriptSemanticAnalysis.js";
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import { onlyCallable } from "./javascriptSemanticAnalysis.fixture.js";
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const returned = (body: string) =>
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onlyCallable(analyzeJavaScriptSemantics(body), "run").returnSites[0]?.value;
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it.each([
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'export function run() { const value={n:1}; const alias=value; {const value=0;eval("alias.n=2");} return value.n; }',
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'const value=1; function run(){eval("var value=2");return value;}',
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'export function run(){let alias;let result;{const value={n:1};alias=value;eval("alias.n=2");result=value.n;}return result;}',
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'function run(){function value(){} eval("value=2");return value;}',
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'function run(){class value {} eval("value=2");return value;}',
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'export function run() { let value=1; eval("value=2"); return value; }',
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'export function run() { const value={n:1}; eval("value.n=2"); return value.n; }',
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'export function run() { const value={n:1}; const alias=value; eval("value.n=2"); return alias.n; }',
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'export function run() { let value=1; function change(){ eval("value=2"); } change(); return value; }',
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'export function run() { let value=1; change(); return value; function change(){ eval("value=2"); } }',
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])("does not retain stale exact values after direct eval: %s", (source) => {
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expect(returned(source)).toMatchObject({ status: "unknown" });
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});
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it.each([
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'eval("var value=2"); function run(){const value=1;return value;}',
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'export function run(){const value={n:1};const saved=value.n;eval("value.n=2");return saved;}',
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'const value=1; function run(){"use strict";eval("var value=2");return value;}',
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'function run(){const value=1;eval("var other=2");return value;}',
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'function other(){const value={n:2};eval("value.n=3");} export function run(){const value={n:1};return value.n;}',
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'export function run() { let value=1; (0,eval)("value=2"); return value; }',
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'export function run() { let value=1; eval?.("value=2"); return value; }',
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'function run() { let value=1; function eval(x) {} eval("value=2"); return value; }',
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'function other() { let value=3; eval("value=4"); } export function run() { let value=1; return value; }',
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'export function run() { let value=1; function other() { let value=3; eval("value=4"); } other(); return value; }',
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'export function run() { let value=1; const saved=value; eval("value=2"); return saved; }',
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])(
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"preserves unaffected lexical facts and primitive captures: %s",
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(source) => {
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expect(returned(source)).toEqual({ status: "literal", value: 1 });
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},
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);
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it("invalidates object facts captured in a block when an alias reaches eval outside it", () => {
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const ir = analyzeJavaScriptSemantics(`export function run(){
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let alias;
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{const value={n:1};alias=value; function read(){return value.n;}}
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eval("alias.n=2");
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}`);
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expect(onlyCallable(ir, "read").returnSites[0]?.value).toMatchObject({
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status: "unknown",
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});
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});
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