070391daaf
Template literals (`hello ${name}`) are the last Tier 1 blocker before
shimming Test262's assert.js/sta.js harness files. The tokenizer eagerly
scans each template into a composite token (quasis + raw expression
strings + absolute byte offsets), and the parser re-tokenizes expressions
with span rebasing for correct source locations. Includes UTF-8-safe
quasi string building, nesting depth limits, and structural comment
skipping in nested expressions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
49 lines
967 B
JavaScript
49 lines
967 B
JavaScript
// Simple (no interpolation)
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console.log(`hello world`);
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// Single variable interpolation
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var name = "world";
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console.log(`hello ${name}`);
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// Multiple interpolations
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var a = 2;
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var b = 3;
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console.log(`${a} + ${b} = ${a + b}`);
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// Type coercion: numbers
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console.log(`num: ${42}`);
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// Type coercion: booleans
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console.log(`bool: ${true}`);
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// Type coercion: null
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console.log(`val: ${null}`);
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// Type coercion: undefined
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console.log(`val: ${undefined}`);
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// Multiline (real newlines)
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console.log(`line1
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line2`);
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// Escape sequences
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console.log(`backtick: \` dollar: \${ newline: \n`);
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// Nested template
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var x = "inner";
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console.log(`outer ${`nested ${x}`} end`);
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// Empty template
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console.log(``);
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// Function call in expression
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function greet(n) { return "hi " + n; }
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console.log(`${greet("Alice")}`);
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// Object coercion
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var obj = {};
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console.log(`obj: ${obj}`);
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// Expression with braces (object literal in expression)
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console.log(`keys: ${typeof {}}`);
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