message:    "Did not find the expected left parenthesis after CAST in the SQL expression.",
		statusCode: 400,
		cause:      err,
	}
}

func errParseExpectedLeftParenValueConstructor(err error) *s3Error {
	return &s3Error{
		code:       "ParseExpectedLeftParenValueConstructor",
		message:    "Did not find expected the left parenthesis in the SQL expression.",
		statusCode: 400,
		cause:      err,
	}

You only give `Depends` a single parameter.

This parameter must be something like a function.

You **don't call it** directly (don't add the parenthesis at the end), you just pass it as a parameter to `Depends()`.

And that function takes parameters in the same way that *path operation functions* do.

/// tip

}

// LiteralList is a type for parsed SQL lists literals
type LiteralList []string

// Capture interface used by participle
func (ls *LiteralList) Capture(values []string) error {
	// Remove enclosing parenthesis.
	n := len(values[0])
	r := values[0][1 : n-1]
	// Translate doubled quotes
	*ls = LiteralList(strings.Split(r, ","))
	return nil
}

// ObjectKey is a type for parsed strings occurring in key paths

		Code:           "ParseExpectedLeftParenAfterCast",
		Description:    "Did not find expected the left parenthesis in the SQL expression.",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrParseExpectedLeftParenValueConstructor: {
		Code:           "ParseExpectedLeftParenValueConstructor",
		Description:    "Did not find expected the left parenthesis in the SQL expression.",
		HTTPStatusCode: http.StatusBadRequest,
	},

		tokens = append(tokens, substitution...)
	}
	in.Push(NewSlice(in.Base(), in.Line(), tokens))
}

// argsFor returns a map from formal name to actual value for this argumented macro invocation.
// The opening parenthesis has been absorbed.
func (in *Input) argsFor(macro *Macro) map[string][]Token {
	var args [][]Token
	// One macro argument per iteration. Collect them all and check counts afterwards.
	for argNum := 0; ; argNum++ {

 * side, this yields nine basic types of ranges, enumerated below. (Notation: a square bracket
 * ({@code [ ]}) indicates that the range is closed on that side; a parenthesis ({@code ( )}) means
 * it is either open or unbounded. The construct {@code {x | statement}} is read "the set of all
 * <i>x</i> such that <i>statement</i>.")
 *
 * <blockquote>
 *
 * <table>

		haveConstant = true
	case '(':
		// Could be parenthesized expression or (R). Must be something, though.
		tok := p.next()
		if tok.ScanToken == scanner.EOF {
			p.errorf("missing right parenthesis")
			return
		}
		rname := tok.String()
		p.back()
		haveConstant = !p.atStartOfRegister(rname)
		if !haveConstant {
			p.back() // Put back the '('.
		}
	}
	if haveConstant {
		p.back()

1ABE          ; valid                  ;      ; NV8    # 7.0  COMBINING PARENTHESES OVERLAY
1ABF..1AC0    ; valid                                  # 13.0 COMBINING LATIN SMALL LETTER W BELOW..COMBINING LATIN SMALL LETTER TURNED W BELOW
1AC1..1ACE    ; valid                                  # 14.0 COMBINING LEFT PARENTHESIS ABOVE LEFT..COMBINING LATIN SMALL LETTER INSULAR T

 * side, this yields nine basic types of ranges, enumerated below. (Notation: a square bracket
 * ({@code [ ]}) indicates that the range is closed on that side; a parenthesis ({@code ( )}) means
 * it is either open or unbounded. The construct {@code {x | statement}} is read "the set of all
 * <i>x</i> such that <i>statement</i>.")
 *
 * <blockquote>
 *
 * <table>

			// with '/', which would give us a "//" comment.
			repl := " " + gofmtPos(expr, old.Pos())
			end := fset.Position(old.End())
			// Subtract 1 from the column if we are going to
			// append a close parenthesis. That will set the
			// correct column for the following characters.
			sub := 0
			if r.Name.Kind != "type" {
				sub = 1
			}
			if end.Column > sub {