Method registerInfix

pkg/dsl/parser/parser.go:842–854

registerInfix safely registers a parsing function for an infix token type in the parser's infixParseFunc map. It takes a token type and an infix parsing function as arguments, and stores the function in the map under the given token type key.

(tokenType token.Type, fn infixParseFn)

// It takes a token type and an infix parsing function as arguments, and stores the function in the map
// under the given token type key.
func (p *Parser) registerInfix(tokenType token.Type, fn infixParseFn) {
	if fn == nil {
		p.duplicationError(fmt.Sprintf("registerInfix: nil function for token type %s", tokenType))
		return
	}

	if _, exists := p.infixParseFunc[tokenType]; exists {
		p.duplicationError(fmt.Sprintf("registerInfix: token type %s already registered", tokenType))
		return
	}

	p.infixParseFunc[tokenType] = fn
}

// duplicationError adds an error message to the parser's error list indicating that a duplication was found.
// It takes a key string as an argument that is used to identify the source of the duplication in the input.