fix(interpreter): decode escape sequences in interpolated strings

packages/interpreter/tests/program_eval_test.zigmodified+22-0

Changes to packages/interpreter/tests/program_eval_test.zig

		⋯88 linesShow the 88 lines above this hunk@@ -89,6 +89,28 @@ test "eval: finite recursive calls remain valid" {
89	89	);
90	90	}
91	91
	92	+test "eval: interpolated strings decode escape sequences" {
	93	+ try runProgram(
	94	+ \\fn main() {
	95	+ \\ let x = 1
	96	+ \\ assert(len("\n${x}") == 2)
	97	+ \\ assert("a\t${x}\tb" == "a\t1\tb")
	98	+ \\ assert("q: \"${x}\"" == "q: \"1\"")
	99	+ \\ assert(len("\${x} is ${x}") == 9)
	100	+ \\}
	101	+ );
	102	+}
	103	+
	104	+test "eval: raw and triple-quoted strings keep a backslash before $" {
	105	+ try runProgram(
	106	+ \\fn main() {
	107	+ \\ assert(r"\$".contains("\\"))
	108	+ \\ assert(r#"\$"#.contains("\\"))
	109	+ \\ assert("""\$""".contains("\\"))
	110	+ \\}
	111	+ );
	112	+}
	113	+
92	114	test "eval: runaway user recursion returns a runtime error" {
93	115	try testing.expectError(error.RuntimeError, runProgram(
94	116	\\fn recurse(n: i32): i32 {