Method SourceString

src/expression/Expression.go:123–156

SourceString returns the string that was parsed in this expression.

(source []byte)

// SourceString returns the string that was parsed in this expression.
func (expr *Expression) SourceString(source []byte) string {
	region := expr.Source()
	open := 0
	left := token.Position(0)
	right := token.Position(0)

	for i := region.Start(); i < region.End(); i++ {
		switch source[i] {
		case '(':
			open++
		case ')':
			if open > 0 {
				open--
			} else {
				left++

				for source[region.Start()-left] != '(' {
					left++
				}
			}
		}
	}

	for open > 0 {
		for source[region.End()+right] != ')' {
			right++
		}

		right++
		open--
	}

	return string(source[region.Start()-left : region.End()+right])
}

// String generates a textual representation of the expression.
func (expr *Expression) String(source []byte) string {