source-academy / js-slang / 1288

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Change scoping rules for code execution

First time code is executed:

const math_PI = 3.14;
const map = <some builtin>;
.
.
.
{
  // user code start
  const con = 1;
  let le = 2;
  // blah blah
  <store con back>
  <store le>
}

Second time code is executed:

const math_PI = 3.14;
const map = <some builtin>;
.
.
.
{
  const con = <retrieve result>
  let le = <retrieve result>
  {
    // another user code start
    const con = 2; // can declare const again here!
    // blah blah
  }
}

547 of 610 branches covered (89.67%)

Branch coverage included in aggregate %.

43 of 43 new or added lines in 3 files covered. (100.0%)

1712 of 1833 relevant lines covered (93.4%)

325549.81 hits per line