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type_toml.go (1929B)

      1 package toml
      2 
      3 // tomlType represents any Go type that corresponds to a TOML type.
      4 // While the first draft of the TOML spec has a simplistic type system that
      5 // probably doesn't need this level of sophistication, we seem to be militating
      6 // toward adding real composite types.
      7 type tomlType interface {
      8 	typeString() string
      9 }
     10 
     11 // typeEqual accepts any two types and returns true if they are equal.
     12 func typeEqual(t1, t2 tomlType) bool {
     13 	if t1 == nil || t2 == nil {
     14 		return false
     15 	}
     16 	return t1.typeString() == t2.typeString()
     17 }
     18 
     19 func typeIsTable(t tomlType) bool {
     20 	return typeEqual(t, tomlHash) || typeEqual(t, tomlArrayHash)
     21 }
     22 
     23 type tomlBaseType string
     24 
     25 func (btype tomlBaseType) typeString() string { return string(btype) }
     26 func (btype tomlBaseType) String() string     { return btype.typeString() }
     27 
     28 var (
     29 	tomlInteger   tomlBaseType = "Integer"
     30 	tomlFloat     tomlBaseType = "Float"
     31 	tomlDatetime  tomlBaseType = "Datetime"
     32 	tomlString    tomlBaseType = "String"
     33 	tomlBool      tomlBaseType = "Bool"
     34 	tomlArray     tomlBaseType = "Array"
     35 	tomlHash      tomlBaseType = "Hash"
     36 	tomlArrayHash tomlBaseType = "ArrayHash"
     37 )
     38 
     39 // typeOfPrimitive returns a tomlType of any primitive value in TOML.
     40 // Primitive values are: Integer, Float, Datetime, String and Bool.
     41 //
     42 // Passing a lexer item other than the following will cause a BUG message
     43 // to occur: itemString, itemBool, itemInteger, itemFloat, itemDatetime.
     44 func (p *parser) typeOfPrimitive(lexItem item) tomlType {
     45 	switch lexItem.typ {
     46 	case itemInteger:
     47 		return tomlInteger
     48 	case itemFloat:
     49 		return tomlFloat
     50 	case itemDatetime:
     51 		return tomlDatetime
     52 	case itemString, itemStringEsc:
     53 		return tomlString
     54 	case itemMultilineString:
     55 		return tomlString
     56 	case itemRawString:
     57 		return tomlString
     58 	case itemRawMultilineString:
     59 		return tomlString
     60 	case itemBool:
     61 		return tomlBool
     62 	}
     63 	p.bug("Cannot infer primitive type of lex item '%s'.", lexItem)
     64 	panic("unreachable")
     65 }