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path: root/src/urubu/spec/test/tree_parser.go
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Diffstat (limited to 'src/urubu/spec/test/tree_parser.go')
-rw-r--r--src/urubu/spec/test/tree_parser.go716
1 files changed, 0 insertions, 716 deletions
diff --git a/src/urubu/spec/test/tree_parser.go b/src/urubu/spec/test/tree_parser.go
deleted file mode 100644
index 528d259..0000000
--- a/src/urubu/spec/test/tree_parser.go
+++ /dev/null
@@ -1,716 +0,0 @@
-// Code generated by vartan-go. DO NOT EDIT.
-package test
-
-import (
- "fmt"
- "io"
-)
-
-type Grammar interface {
- // InitialState returns the initial state of a parser.
- InitialState() int
-
- // StartProduction returns the start production of grammar.
- StartProduction() int
-
- // Action returns an ACTION entry corresponding to a (state, terminal symbol) pair.
- Action(state int, terminal int) int
-
- // GoTo returns a GOTO entry corresponding to a (state, non-terminal symbol) pair.
- GoTo(state int, lhs int) int
-
- // ErrorTrapperState returns true when a state can shift the error symbol.
- ErrorTrapperState(state int) bool
-
- // LHS returns a LHS symbol of a production.
- LHS(prod int) int
-
- // AlternativeSymbolCount returns a symbol count of p production.
- AlternativeSymbolCount(prod int) int
-
- // RecoverProduction returns true when a production has the recover directive.
- RecoverProduction(prod int) bool
-
- // NonTerminal retuns a string representaion of a non-terminal symbol.
- NonTerminal(nonTerminal int) string
-
- // TerminalCount returns a terminal symbol count of grammar.
- TerminalCount() int
-
- // SkipTerminal returns true when a terminal symbol must be skipped on syntax analysis.
- SkipTerminal(terminal int) bool
-
- // EOF returns the EOF symbol.
- EOF() int
-
- // Error returns the error symbol.
- Error() int
-
- // Terminal retuns a string representaion of a terminal symbol.
- Terminal(terminal int) string
-
- // ASTAction returns an AST action entries.
- ASTAction(prod int) []int
-}
-
-type VToken interface {
- // TerminalID returns a terminal ID.
- TerminalID() int
-
- // Lexeme returns a lexeme.
- Lexeme() []byte
-
- // EOF returns true when a token represents EOF.
- EOF() bool
-
- // Invalid returns true when a token is invalid.
- Invalid() bool
-
- // Position returns (row, column) pair.
- Position() (int, int)
-}
-
-type TokenStream interface {
- Next() (VToken, error)
-}
-
-type SyntaxError struct {
- Row int
- Col int
- Message string
- Token VToken
- ExpectedTerminals []string
-}
-
-type ParserOption func(p *Parser) error
-
-// DisableLAC disables LAC (lookahead correction). LAC is enabled by default.
-func DisableLAC() ParserOption {
- return func(p *Parser) error {
- p.disableLAC = true
- return nil
- }
-}
-
-func SemanticAction(semAct SemanticActionSet) ParserOption {
- return func(p *Parser) error {
- p.semAct = semAct
- return nil
- }
-}
-
-type Parser struct {
- toks TokenStream
- gram Grammar
- stateStack *stateStack
- semAct SemanticActionSet
- disableLAC bool
- onError bool
- shiftCount int
- synErrs []*SyntaxError
-}
-
-func NewParser(toks TokenStream, gram Grammar, opts ...ParserOption) (*Parser, error) {
- p := &Parser{
- toks: toks,
- gram: gram,
- stateStack: &stateStack{},
- }
-
- for _, opt := range opts {
- err := opt(p)
- if err != nil {
- return nil, err
- }
- }
-
- return p, nil
-}
-
-func (p *Parser) Parse() error {
- p.stateStack.push(p.gram.InitialState())
- tok, err := p.nextToken()
- if err != nil {
- return err
- }
-
-ACTION_LOOP:
- for {
- act := p.lookupAction(tok)
-
- switch {
- case act < 0: // Shift
- nextState := act * -1
-
- recovered := false
- if p.onError {
- p.shiftCount++
-
- // When the parser performs shift three times, the parser recovers from the error state.
- if p.shiftCount >= 3 {
- p.onError = false
- p.shiftCount = 0
- recovered = true
- }
- }
-
- p.shift(nextState)
-
- if p.semAct != nil {
- p.semAct.Shift(tok, recovered)
- }
-
- tok, err = p.nextToken()
- if err != nil {
- return err
- }
- case act > 0: // Reduce
- prodNum := act
-
- recovered := false
- if p.onError && p.gram.RecoverProduction(prodNum) {
- p.onError = false
- p.shiftCount = 0
- recovered = true
- }
-
- accepted := p.reduce(prodNum)
- if accepted {
- if p.semAct != nil {
- p.semAct.Accept()
- }
-
- return nil
- }
-
- if p.semAct != nil {
- p.semAct.Reduce(prodNum, recovered)
- }
- default: // Error
- if p.onError {
- tok, err = p.nextToken()
- if err != nil {
- return err
- }
- if tok.EOF() {
- if p.semAct != nil {
- p.semAct.MissError(tok)
- }
-
- return nil
- }
-
- continue ACTION_LOOP
- }
-
- row, col := tok.Position()
- p.synErrs = append(p.synErrs, &SyntaxError{
- Row: row,
- Col: col,
- Message: "unexpected token",
- Token: tok,
- ExpectedTerminals: p.searchLookahead(p.stateStack.top()),
- })
-
- count, ok := p.trapError()
- if !ok {
- if p.semAct != nil {
- p.semAct.MissError(tok)
- }
-
- return nil
- }
-
- p.onError = true
- p.shiftCount = 0
-
- act, err := p.lookupActionOnError()
- if err != nil {
- return err
- }
-
- p.shift(act * -1)
-
- if p.semAct != nil {
- p.semAct.TrapAndShiftError(tok, count)
- }
- }
- }
-}
-
-// validateLookahead validates whether `term` is a valid lookahead in the current context. When `term` is valid,
-// this method returns `true`.
-func (p *Parser) validateLookahead(term int) bool {
- p.stateStack.enableExploratoryMode()
- defer p.stateStack.disableExploratoryMode()
-
- for {
- act := p.gram.Action(p.stateStack.topExploratorily(), term)
-
- switch {
- case act < 0: // Shift
- return true
- case act > 0: // Reduce
- prodNum := act
-
- lhs := p.gram.LHS(prodNum)
- if lhs == p.gram.LHS(p.gram.StartProduction()) {
- return true
- }
- n := p.gram.AlternativeSymbolCount(prodNum)
- p.stateStack.popExploratorily(n)
- state := p.gram.GoTo(p.stateStack.topExploratorily(), lhs)
- p.stateStack.pushExploratorily(state)
- default: // Error
- return false
- }
- }
-}
-
-func (p *Parser) nextToken() (VToken, error) {
- for {
- // We don't have to check whether the token is invalid because the kind ID of the invalid token is 0,
- // and the parsing table doesn't have an entry corresponding to the kind ID 0. Thus we can detect
- // a syntax error because the parser cannot find an entry corresponding to the invalid token.
- tok, err := p.toks.Next()
- if err != nil {
- return nil, err
- }
-
- if p.gram.SkipTerminal(tok.TerminalID()) {
- continue
- }
-
- return tok, nil
- }
-}
-
-func (p *Parser) tokenToTerminal(tok VToken) int {
- if tok.EOF() {
- return p.gram.EOF()
- }
-
- return tok.TerminalID()
-}
-
-func (p *Parser) lookupAction(tok VToken) int {
- if !p.disableLAC {
- term := p.tokenToTerminal(tok)
- if !p.validateLookahead(term) {
- return 0
- }
- }
-
- return p.gram.Action(p.stateStack.top(), p.tokenToTerminal(tok))
-}
-
-func (p *Parser) lookupActionOnError() (int, error) {
- act := p.gram.Action(p.stateStack.top(), p.gram.Error())
- if act >= 0 {
- return 0, fmt.Errorf("an entry must be a shift action by the error symbol; entry: %v, state: %v, symbol: %v", act, p.stateStack.top(), p.gram.Terminal(p.gram.Error()))
- }
-
- return act, nil
-}
-
-func (p *Parser) shift(nextState int) {
- p.stateStack.push(nextState)
-}
-
-func (p *Parser) reduce(prodNum int) bool {
- lhs := p.gram.LHS(prodNum)
- if lhs == p.gram.LHS(p.gram.StartProduction()) {
- return true
- }
- n := p.gram.AlternativeSymbolCount(prodNum)
- p.stateStack.pop(n)
- nextState := p.gram.GoTo(p.stateStack.top(), lhs)
- p.stateStack.push(nextState)
- return false
-}
-
-func (p *Parser) trapError() (int, bool) {
- count := 0
- for {
- if p.gram.ErrorTrapperState(p.stateStack.top()) {
- return count, true
- }
-
- if p.stateStack.top() != p.gram.InitialState() {
- p.stateStack.pop(1)
- count++
- } else {
- return 0, false
- }
- }
-}
-
-func (p *Parser) SyntaxErrors() []*SyntaxError {
- return p.synErrs
-}
-
-func (p *Parser) searchLookahead(state int) []string {
- kinds := []string{}
- termCount := p.gram.TerminalCount()
- for term := 0; term < termCount; term++ {
- if p.disableLAC {
- if p.gram.Action(p.stateStack.top(), term) == 0 {
- continue
- }
- } else {
- if !p.validateLookahead(term) {
- continue
- }
- }
-
- // We don't add the error symbol to the look-ahead symbols because users cannot input the error symbol
- // intentionally.
- if term == p.gram.Error() {
- continue
- }
-
- kinds = append(kinds, p.gram.Terminal(term))
- }
-
- return kinds
-}
-
-type stateStack struct {
- items []int
- itemsExp []int
-}
-
-func (s *stateStack) enableExploratoryMode() {
- s.itemsExp = make([]int, len(s.items))
- copy(s.itemsExp, s.items)
-}
-
-func (s *stateStack) disableExploratoryMode() {
- s.itemsExp = nil
-}
-
-func (s *stateStack) top() int {
- return s.items[len(s.items)-1]
-}
-
-func (s *stateStack) topExploratorily() int {
- return s.itemsExp[len(s.itemsExp)-1]
-}
-
-func (s *stateStack) push(state int) {
- s.items = append(s.items, state)
-}
-
-func (s *stateStack) pushExploratorily(state int) {
- s.itemsExp = append(s.itemsExp, state)
-}
-
-func (s *stateStack) pop(n int) {
- s.items = s.items[:len(s.items)-n]
-}
-
-func (s *stateStack) popExploratorily(n int) {
- s.itemsExp = s.itemsExp[:len(s.itemsExp)-n]
-}
-
-type grammarImpl struct {
- recoverProductions []int
- action []int
- goTo []int
- alternativeSymbolCounts []int
- errorTrapperStates []int
- nonTerminals []string
- lhsSymbols []int
- terminals []string
- terminalSkip []int
- astActions [][]int
-}
-
-func NewGrammar() *grammarImpl {
- return &grammarImpl{
- recoverProductions: []int{
- 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0,
- },
- action: []int{
- 0, 0, 0, 0, -2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- -3, 0, 0, 0, -4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, -5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0,
- -2, 7, 0, -11, 0, 0, -12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 4,
- 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 6,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -2, -14, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -15, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 12, 0, 0, 12, 12, 0, 0, -17, 12, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, -22, 0, 16, 16, 0, 0, 0, 0, 0, -23,
- -24, -25, -26, -27, -28, -29, 16, 0, 0, 0, 0, 5, 5, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 3, 0, 0, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -30, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- -31, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -23, -24, -25, -26, -27, -28, -29, 15,
- 0, 18, 0, 0, 18, 18, 0, 0, 0, 0, 0, 18, 18, 18, 18, 18, 18, 18, 18, 0,
- 25, 0, 0, 25, 25, 0, 0, 0, 0, 0, 25, 25, 25, 25, 25, 25, 25, 25, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -33, 0, 19, 0,
- 0, 19, 19, 0, 0, 0, 0, 0, 19, 19, 19, 19, 19, 19, 19, 19, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, -34, 0, 0, 0, 0, 0, 0, 20, 0, 0, 20,
- 20, 0, 0, 0, 0, 0, 20, 20, 20, 20, 20, 20, 20, 20, 0, 21, 0, 0, 21, 21,
- 0, 0, 0, 0, 0, 21, 21, 21, 21, 21, 21, 21, 21, 0, 22, 0, 0, 22, 22, 0,
- 0, 0, 0, 0, 22, 22, 22, 22, 22, 22, 22, 22, 0, 23, 0, 0, 23, 23, 0, 0,
- 0, 0, 0, 23, 23, 23, 23, 23, 23, 23, 23, 0, 24, 0, 0, 24, 24, 0, 0, 0,
- 0, 0, 24, 24, 24, 24, 24, 24, 24, 24, 0, 10, 0, 0, 10, 10, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 13, 0, 0, 13, 13, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 17, 0, 0, 17, 17, 0, 0, 0, 0, 0, 17,
- 17, 17, 17, 17, 17, 17, 17, 0, 14, 0, 0, 14, 14, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, -35, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -36,
- 0, 0, 0, 0, 0, 26, 0, 0, 26, 26, 0, 0, 0, 0, 0, 26, 26, 26, 26, 26,
- 26, 26, 26,
- },
- goTo: []int{
- 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 8, 9, 0, 10, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 16, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 19, 20, 21, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 21,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0,
- },
- alternativeSymbolCounts: []int{
- 0, 1, 4, 4, 3, 2, 1, 0, 1, 1, 3, 1, 0, 3, 3, 1, 0, 2, 1, 1,
- 1, 1, 1, 1, 1, 1, 4,
- },
- errorTrapperStates: []int{
- 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- },
- nonTerminals: []string{
- "",
- "tree'",
- "tree",
- "tree_list",
- "string",
- "raw_string",
- "opt_raw_string_body",
- "interpreted_string",
- "opt_interpreted_string_body",
- "interpreted_string_body",
- "interpreted_string_elem",
- "codepoint_expr",
- },
- lhsSymbols: []int{
- 0, 1, 2, 2, 2, 3, 3, 3, 4, 4, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10,
- 10, 10, 10, 10, 10, 10, 11,
- },
- terminals: []string{
- "",
- "<eof>",
- "error",
- "ws",
- "l_paren",
- "r_paren",
- "identifier",
- "raw_string_open",
- "raw_string_body",
- "raw_string_close",
- "interpreted_string_open",
- "interpreted_seq",
- "codepoint_prefix",
- "l_brace",
- "r_brace",
- "hex_digits",
- "escaped_seq",
- "escape_char",
- "interpreted_string_close",
- },
- terminalSkip: []int{
- 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- },
- astActions: [][]int{
- nil,
- nil,
- {
- 2, -3,
- },
- {
- 2, 3,
- },
- {
- 2,
- },
- {
- -1, 2,
- },
- nil,
- nil,
- nil,
- nil,
- {
- -2,
- },
- nil,
- nil,
- {
- -2,
- },
- {
- 2,
- },
- {
- -1,
- },
- nil,
- {
- -1, -2,
- },
- {
- -1,
- },
- nil,
- nil,
- nil,
- nil,
- nil,
- nil,
- nil,
- {
- 3,
- },
- },
- }
-}
-
-func (g *grammarImpl) InitialState() int {
- return 0
-}
-
-func (g *grammarImpl) StartProduction() int {
- return 1
-}
-
-func (g *grammarImpl) RecoverProduction(prod int) bool {
- return g.recoverProductions[prod] != 0
-}
-
-func (g *grammarImpl) Action(state int, terminal int) int {
- return g.action[state*19+terminal]
-}
-
-func (g *grammarImpl) GoTo(state int, lhs int) int {
- return g.goTo[state*12+lhs]
-}
-
-func (g *grammarImpl) AlternativeSymbolCount(prod int) int {
- return g.alternativeSymbolCounts[prod]
-}
-
-func (g *grammarImpl) TerminalCount() int {
- return 19
-}
-
-func (g *grammarImpl) SkipTerminal(terminal int) bool {
- return g.terminalSkip[terminal] == 1
-}
-
-func (g *grammarImpl) ErrorTrapperState(state int) bool {
- return g.errorTrapperStates[state] != 0
-}
-
-func (g *grammarImpl) NonTerminal(nonTerminal int) string {
- return g.nonTerminals[nonTerminal]
-}
-
-func (g *grammarImpl) LHS(prod int) int {
- return g.lhsSymbols[prod]
-}
-
-func (g *grammarImpl) EOF() int {
- return 1
-}
-
-func (g *grammarImpl) Error() int {
- return 2
-}
-
-func (g *grammarImpl) Terminal(terminal int) string {
- return g.terminals[terminal]
-}
-
-func (g *grammarImpl) ASTAction(prod int) []int {
- return g.astActions[prod]
-}
-
-type vToken struct {
- terminalID int
- tok *Token
-}
-
-func (t *vToken) TerminalID() int {
- return t.terminalID
-}
-
-func (t *vToken) Lexeme() []byte {
- return t.tok.Lexeme
-}
-
-func (t *vToken) EOF() bool {
- return t.tok.EOF
-}
-
-func (t *vToken) Invalid() bool {
- return t.tok.Invalid
-}
-
-func (t *vToken) Position() (int, int) {
- return t.tok.Row, t.tok.Col
-}
-
-var kindToTerminal = []int{
- 0, 3, 4, 5, 6, 7, 10, 8, 9, 11, 12, 13, 14, 15, 16, 17, 18,
-}
-
-type tokenStream struct {
- lex *Lexer
- kindToTerminal []int
-}
-
-func NewTokenStream(src io.Reader) (*tokenStream, error) {
- lex, err := NewLexer(NewLexSpec(), src)
- if err != nil {
- return nil, err
- }
-
- return &tokenStream{
- lex: lex,
- }, nil
-}
-
-func (t *tokenStream) Next() (VToken, error) {
- tok, err := t.lex.Next()
- if err != nil {
- return nil, err
- }
- return &vToken{
- terminalID: kindToTerminal[tok.KindID],
- tok: tok,
- }, nil
-}