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| author | Ryo Nihei <nihei.dev@gmail.com> | 2022-05-21 14:01:09 +0900 |
|---|---|---|
| committer | Ryo Nihei <nihei.dev@gmail.com> | 2022-05-22 15:44:47 +0900 |
| commit | b5ad1d30df993d68cc64c140bf1005b5490f2605 (patch) | |
| tree | 919e3102866b4dcf4ed58c0a48227ee0c81f1f5d /driver/parser.go | |
| parent | Prohibit applying #left, #right, #assign, and #prec to an error symbol (diff) | |
| download | cotia-b5ad1d30df993d68cc64c140bf1005b5490f2605.tar.gz cotia-b5ad1d30df993d68cc64c140bf1005b5490f2605.tar.xz | |
Stop supporting SLR(1) and always use LALR(1)
Diffstat (limited to 'driver/parser.go')
| -rw-r--r-- | driver/parser.go | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/driver/parser.go b/driver/parser.go index dbebec3..14e9752 100644 --- a/driver/parser.go +++ b/driver/parser.go @@ -5,9 +5,6 @@ import ( ) type Grammar interface { - // Class returns a class of grammar. - Class() string - // InitialState returns the initial state of a parser. InitialState() int @@ -88,7 +85,7 @@ type SyntaxError struct { type ParserOption func(p *Parser) error -// DisableLAC disables LAC (lookahead correction). When the grammar has the LALR class, LAC is enabled by default. +// DisableLAC disables LAC (lookahead correction). LAC is enabled by default. func DisableLAC() ParserOption { return func(p *Parser) error { p.disableLAC = true @@ -121,10 +118,6 @@ func NewParser(toks TokenStream, gram Grammar, opts ...ParserOption) (*Parser, e stateStack: &stateStack{}, } - if p.gram.Class() != "lalr" { - p.disableLAC = true - } - for _, opt := range opts { err := opt(p) if err != nil { |