php-parser/php7/lexer.go

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package php7
import (
"bufio"
goToken "go/token"
"io"
"github.com/cznic/golex/lex"
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"github.com/z7zmey/php-parser/errors"
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"github.com/z7zmey/php-parser/scanner"
"github.com/z7zmey/php-parser/token"
)
type lexer struct {
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scanner.Lexer
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lastToken *token.Token
errors []*errors.Error
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}
func (l *lexer) Lex(lval *yySymType) int {
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t := l.Lexer.Lex(lval)
l.lastToken = &lval.token
return t
}
func (l *lexer) Error(msg string) {
l.errors = append(l.errors, errors.NewError(msg, *l.lastToken))
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}
func (lval *yySymType) Token(t token.Token) {
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lval.token = t
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}
func newLexer(src io.Reader, fName string) *lexer {
file := goToken.NewFileSet().AddFile(fName, -1, 1<<31-1)
lx, err := lex.New(file, bufio.NewReader(src), lex.RuneClass(scanner.Rune2Class))
if err != nil {
panic(err)
}
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scanner := scanner.Lexer{
Lexer: lx,
StateStack: []int{0},
PhpDocComment: "",
Comments: nil,
}
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return &lexer{
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scanner,
nil,
nil,
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}
}