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earley

package module

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Versions in this module

v1

v1.0.6

Apr 11, 2024

Changes in this version

+ var ErrAmbiguous = errors.New("ambiguous")

+ var ErrNoParse = errors.New("no parse")

+ var Trace = false

+ func WriteGrammar(dst io.Writer, s Scope)

+ type GrammarScope interface

+ Rule func(lhs NonTerminal, formals ...interface{}) *Production

+ func NewGrammarScope(outer Scope) GrammarScope

+ type Item struct

+ At int

+ Of *Production

+ type Lang struct

+ func New(starts ...NonTerminal) *Lang

+ func (l *Lang) Extend(with *Lang) *Lang

+ func (l *Lang) Global() Scope

+ func (l *Lang) NewLangWithGlobalScope(s Scope) *Lang

+ func (l *Lang) Parse(ctx context.Context, src Scanner) (Meaning, error)

+ func (l *Lang) ParseStart(ctx context.Context, src Scanner, start NonTerminal) (Meaning, error)

+ func (l *Lang) Restart(start NonTerminal) *Lang

+ func (l *Lang) Rule(lhs NonTerminal, formals ...interface{}) *Production

+ func (s *Lang) WriteTo(dst io.Writer)

+ type Lexeme interface

+ Value func() interface{}

+ type Meaning interface

+ type NonTerminal string

+ type ParseError struct

+ func (err *ParseError) Error() string

+ type Production struct

+ func Lookup(in Scope, nt NonTerminal) []*Production

+ func (p *Production) Accept() *Production

+ func (p *Production) Nth(i int) interface{}

+ func (p *Production) Reject() *Production

+ func (p *Production) Then(r Reducer) *Production

+ type Reducer func([]Meaning) Meaning

+ type Scanner interface

+ Scan func(context.Context) (Lexeme, error)

+ type Scope interface

+ Context func() context.Context

+ Outer func() Scope

+ type ScopeChanger interface

+ ScopeChange func(Scope) Scope

+ type ScopeChangerWithErr interface

+ ScopeChange func(Scope) (Scope, error)

+ type TokenMatcher interface

+ Match func(Scope, Lexeme) bool

+ String func() string

v1.0.5

Mar 12, 2022

v1.0.4

Aug 2, 2021