waiig15/parser/parser_return.go

package parser

import (
	"code.osinet.fr/fgm/waiig15/ast"
	"code.osinet.fr/fgm/waiig15/token"
)

func (p *Parser) parseReturnStatement() *ast.ReturnStatement {
	stmt := &ast.ReturnStatement{
		Token: p.curToken,
	}

	// There should be an expression to consume here.
	p.nextToken()

	// Skip the expression for now, progress to the semicolon terminating the
	// statement.
	for !p.curTokenIs(token.SEMICOLON) {
		p.nextToken()
	}

	return stmt
}

func (p *Parser) registerInfix(tokenType token.TokenType, fn infixParseFn) {
	p.infixParseFns[tokenType] = fn
}

func (p *Parser) registerPrefix(tokenType token.TokenType, fn prefixParseFn) {
	p.prefixParseFns[tokenType] = fn
}