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package driver
import spec "github.com/nihei9/vartan/spec/grammar"
type grammarImpl struct {
g *spec.CompiledGrammar
}
func NewGrammar(g *spec.CompiledGrammar) *grammarImpl {
return &grammarImpl{
g: g,
}
}
func (g *grammarImpl) InitialState() int {
return g.g.ParsingTable.InitialState
}
func (g *grammarImpl) StartProduction() int {
return g.g.ParsingTable.StartProduction
}
func (g *grammarImpl) RecoverProduction(prod int) bool {
return g.g.ParsingTable.RecoverProductions[prod] != 0
}
func (g *grammarImpl) Action(state int, terminal int) int {
return g.g.ParsingTable.Action[state*g.g.ParsingTable.TerminalCount+terminal]
}
func (g *grammarImpl) GoTo(state int, lhs int) int {
return g.g.ParsingTable.GoTo[state*g.g.ParsingTable.NonTerminalCount+lhs]
}
func (g *grammarImpl) AlternativeSymbolCount(prod int) int {
return g.g.ParsingTable.AlternativeSymbolCounts[prod]
}
func (g *grammarImpl) TerminalCount() int {
return g.g.ParsingTable.TerminalCount
}
func (g *grammarImpl) ErrorTrapperState(state int) bool {
return g.g.ParsingTable.ErrorTrapperStates[state] != 0
}
func (g *grammarImpl) NonTerminal(nonTerminal int) string {
return g.g.ParsingTable.NonTerminals[nonTerminal]
}
func (g *grammarImpl) LHS(prod int) int {
return g.g.ParsingTable.LHSSymbols[prod]
}
func (g *grammarImpl) EOF() int {
return g.g.ParsingTable.EOFSymbol
}
func (g *grammarImpl) Error() int {
return g.g.ParsingTable.ErrorSymbol
}
func (g *grammarImpl) Terminal(terminal int) string {
return g.g.ParsingTable.Terminals[terminal]
}
func (g *grammarImpl) ASTAction(prod int) []int {
return g.g.ASTAction.Entries[prod]
}
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