func getImports(symbols *symbols.Symbols) (imports []*importType) {
imports = make([]*importType, 0, len(symbols.ImportIdList))
for _, id := range symbols.ImportIdList {
impType := &importType{
Id: id,
ExtFunc: symbols.ExternalFunction(id),
Type: symbols.Type(id),
}
imports = append(imports, impType)
}
return
}
func getAsciiTab(symbols *symbols.Symbols) map[rune]asciiType {
asciiMap := make(map[rune]asciiType)
for i, sym := range symbols.List() {
if cl, exist := symbols.CharLitSymbols.GetSymbolId(sym); exist {
if cl.Val < 0x100 {
asciiMap[cl.Val] = asciiType{Type: i, Comment: sym}
}
}
}
return asciiMap
}
/*
See Algorithm: set.Closure() in package doc
*/
func (this ItemList) Closure(lexPart *ast.LexPart, symbols *symbols.Symbols) ItemList {
closure := this
for i := 0; i < len(closure); i++ {
expSym := closure[i].ExpectedSymbol()
if regDefId, isRegDefId := expSym.(*ast.LexRegDefId); isRegDefId {
if !this.ContainShift(expSym.String()) && !symbols.IsImport(regDefId.Id) {
closure = closure.AddNoDuplicate(NewItem(regDefId.Id, lexPart, symbols).Emoves()...)
}
}
}
return closure
}
func getCharRanges(symbols *symbols.Symbols) (ranges []CharRange) {
ranges = make([]CharRange, symbols.CharRangeSymbols.Len())
for i, rng := range symbols.CharRangeSymbols.List() {
cr := CharRange{
Min: rng.From.Val,
Max: rng.To.Val,
Type: symbols.Type(rng.String()),
Comment: rng.String(),
}
ranges[i] = cr
}
return
}