parseStrLit

pub fn parseStrLit(
    tree: Ast,
    node: Ast.Node.Index,
    writer: *Writer,
) Writer.Error!std.zig.string_literal.Result {
    switch (tree.nodeTag(node)) {
        .string_literal => {
            const token = tree.nodeMainToken(node);
            const raw_string = tree.tokenSlice(token);
            return std.zig.string_literal.parseWrite(writer, raw_string);
        },
        .multiline_string_literal => {
            const first_tok, const last_tok = tree.nodeData(node).token_and_token;

            // First line: do not append a newline.
            {
                const line_bytes = tree.tokenSlice(first_tok)[2..];
                try writer.writeAll(line_bytes);
            }

            // Following lines: each line prepends a newline.
            for (first_tok + 1..last_tok + 1) |tok_idx| {
                const line_bytes = tree.tokenSlice(@intCast(tok_idx))[2..];
                try writer.writeByte('\n');
                try writer.writeAll(line_bytes);
            }

            return .success;
        },
        // Node must represent a string
        else => unreachable,
    }
}