Exemplo n.º 1
0
package data

import (
	"strconv"
	"time"

	"github.com/nordsieck/defect"
)

const (
	ErrWrongNumFields    = defect.Error("Wrong number of fields")
	ErrInvalidLeadFollow = defect.Error("Invalid lead of follow value")

	layout = "Jan 2006"
)

type Parser interface {
	Parse([]string) error
}

type Dancer struct {
	Number      uint32
	First, Last string
}

var _ Parser = &Dancer{}

func (d *Dancer) Parse(s []string) error {
	if len(s) != 3 {
		return ErrWrongNumFields
	}
Exemplo n.º 2
0
//go:generate go tool yacc -o parse.go parse.y

package v3

import (
	"fmt"
	"strconv"
	"unicode/utf8"

	"github.com/nordsieck/defect"
	"github.com/nordsieck/lexandyacctutorial/util"
)

const (
	IllegalInteger = defect.Error("Illegal integer")

	literals = '+' | '-' | '*' | '/' | ';' | '(' | ')' | '{' | '}'
)

type Token string
type Lexer struct{ util.Lexer }

func (l *Lexer) Token() (t Token, kind int, err error) {
	r, err := l.Scan()
	if err != nil {
		return "", 0, err
	}
	switch {
	case r == 'e':
		t = Token(r)