122 lines
2.3 KiB
Go
122 lines
2.3 KiB
Go
package php7
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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/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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rootNode node.Node
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comments parser.Comments
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positions parser.Positions
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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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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.Lexer.Errors = append(l.Lexer.Errors, errors.NewError(msg, l.currentToken.Position))
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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.Lexer.Errors = nil
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l.rootNode = nil
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l.comments = parser.Comments{}
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l.positions = parser.Positions{}
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l.positionBuilder = &parser.PositionBuilder{
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Positions: &l.positions,
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PositionPool: &l.PositionPool,
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}
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// parse
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return yyParse(l)
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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.Lexer.Errors
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}
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// GetComments returns comments list
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func (l *Parser) GetComments() parser.Comments {
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return l.comments
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}
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// GetPositions returns positions list
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func (l *Parser) GetPositions() parser.Positions {
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return l.positions
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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 (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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p.PositionPool.Put(yyDollar[i].token.Position)
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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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