157 lines
2.8 KiB
Go
157 lines
2.8 KiB
Go
package php5
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import (
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"io"
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"github.com/z7zmey/php-parser/errors"
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"github.com/z7zmey/php-parser/meta"
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"github.com/z7zmey/php-parser/node"
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"github.com/z7zmey/php-parser/parser"
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"github.com/z7zmey/php-parser/scanner"
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)
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func (lval *yySymType) Token(t *scanner.Token) {
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lval.token = t
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}
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// Parser structure
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type Parser struct {
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*scanner.Lexer
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path string
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currentToken *scanner.Token
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positionBuilder *parser.PositionBuilder
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errors []*errors.Error
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rootNode node.Node
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}
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// NewParser creates and returns new Parser
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func NewParser(src io.Reader, path string) *Parser {
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lexer := scanner.NewLexer(src, path)
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return &Parser{
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lexer,
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path,
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nil,
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nil,
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nil,
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nil,
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}
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}
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// Lex proxy to lexer Lex
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func (l *Parser) Lex(lval *yySymType) int {
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t := l.Lexer.Lex(lval)
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l.currentToken = lval.token
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return t
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}
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func (l *Parser) Error(msg string) {
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l.errors = append(l.errors, errors.NewError(msg, l.currentToken))
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}
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func (l *Parser) WithMeta() {
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l.Lexer.WithMeta = true
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}
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// Parse the php7 Parser entrypoint
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func (l *Parser) Parse() int {
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// init
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l.errors = nil
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l.rootNode = nil
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l.positionBuilder = &parser.PositionBuilder{}
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// parse
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return yyParse(l)
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}
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func (l *Parser) listGetFirstNodeMeta(list []node.Node) *meta.Collection {
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if len(list) == 0 {
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return nil
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}
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node := list[0]
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return node.GetMeta()
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}
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// GetPath return path to file
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func (l *Parser) GetPath() string {
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return l.path
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}
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// GetRootNode returns root node
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func (l *Parser) GetRootNode() node.Node {
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return l.rootNode
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}
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// GetErrors returns errors list
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func (l *Parser) GetErrors() []*errors.Error {
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return l.errors
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}
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// helpers
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func lastNode(nn []node.Node) node.Node {
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if len(nn) == 0 {
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return nil
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}
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return nn[len(nn)-1]
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}
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func firstNode(nn []node.Node) node.Node {
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return nn[0]
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}
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func isDollar(r rune) bool {
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return r == '$'
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}
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func (l *Parser) appendMetaToken(n node.Node, t *scanner.Token, tn meta.TokenName) {
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if !l.Lexer.WithMeta {
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return
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}
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m := &meta.Data{
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Value: t.Value,
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Type: meta.TokenType,
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Position: l.positionBuilder.NewTokenPosition(t),
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TokenName: tn,
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}
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n.GetMeta().Push(m)
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}
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func (l *Parser) appendMeta(n node.Node, m *meta.Data, tn meta.TokenName) {
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if !l.Lexer.WithMeta {
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return
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}
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n.GetMeta().Push(m)
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}
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func (l *Parser) prependMetaToken(n node.Node, t *scanner.Token, tn meta.TokenName) {
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if !l.Lexer.WithMeta {
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return
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}
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m := &meta.Data{
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Value: t.Value,
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Type: meta.TokenType,
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Position: l.positionBuilder.NewTokenPosition(t),
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TokenName: tn,
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}
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n.GetMeta().Unshift(m)
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}
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func (p *Parser) returnTokenToPool(yyDollar []yySymType, yyVAL *yySymType) {
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for i := 1; i < len(yyDollar); i++ {
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if yyDollar[i].token != nil {
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p.TokenPool.Put(yyDollar[i].token)
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}
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yyDollar[i].token = nil
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}
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yyVAL.token = nil
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}
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