ddptypes

package
v1.0.0 Latest Latest
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 Go to latest Published: May 11, 2025 License: MIT Imports: 2 Imported by: 1

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Index

Constants

View Source 
const (
	INVALID_GENDER GrammaticalGender = -1
	MASKULIN                         = iota
	FEMININ
	NEUTRUM
)

Variables

View Source 
var VARIABLE = Variable{}

Functions

func DeepEqual 

func DeepEqual(t1, t2 Type) bool

checks wether t1 equals t2, that is, wether t1 and t2 refer to the same type throughout TypeAliases and TypeDefs and also List Types

func Equal 

func Equal(t1, t2 Type) bool

checks wether t1 equals t2, that is, wether t1 and t2 refer to the same type throughout TypeAliases but not TypeDefs

func InstantiatedFrom added in v1.0.0 

func InstantiatedFrom(s *StructType) (*GenericStructType, []Type)

returns the Generic Type this struct was instantiated from or nil if it is not generic

func IsAny 

func IsAny(t Type) bool

func IsGeneric added in v1.0.0 

func IsGeneric(t Type) bool

func IsList 

func IsList(t Type) bool

func IsNumeric 

func IsNumeric(t Type) bool

func IsPrimitive 

func IsPrimitive(t Type) bool

func IsPrimitiveOrVoid 

func IsPrimitiveOrVoid(t Type) bool

func IsStruct 

func IsStruct(t Type) bool

func IsTypeAlias 

func IsTypeAlias(t Type) bool

func IsTypeDef 

func IsTypeDef(t Type) bool

func IsVoid 

func IsVoid(t Type) bool

func MatchesGender added in v1.0.0 

func MatchesGender(t Type, genders ...GrammaticalGender) bool

checks wether t matches any of the provided genders

func ParamTypesEqual 

func ParamTypesEqual(p1, p2 ParameterType) bool

func StructurallyEqual 

func StructurallyEqual(t1, t2 *StructType) bool

checks wether two structs are structurally equal, that is their fields have the same type and are in the same order even ignoring TypeDefs

Types

type GenericStructInstantiation added in v1.0.0 

type GenericStructInstantiation struct {
	Type *StructType
}

type GenericStructType added in v1.0.0 

type GenericStructType struct {
	StructType     StructType
	GenericTypes   []GenericType
	Instantiations []*StructType
}

func CastGenericStructType added in v1.0.0 

func CastGenericStructType(t Type) (*GenericStructType, bool)

func (*GenericStructType) Gender added in v1.0.0 

func (t *GenericStructType) Gender() GrammaticalGender

func (*GenericStructType) String added in v1.0.0 

func (t *GenericStructType) String() string

type GenericType added in v1.0.0 

type GenericType struct {
	Name string
}

represents a generic type in a declaration (not yet resolved)

func CastDeeplyNestedGenerics added in v1.0.0 

func CastDeeplyNestedGenerics(t Type) ([]GenericType, bool)

func CastGeneric added in v1.0.0 

func CastGeneric(t Type) (GenericType, bool)

func (GenericType) Gender added in v1.0.0 

func (GenericType) Gender() GrammaticalGender

func (GenericType) String added in v1.0.0 

func (t GenericType) String() string

type GrammaticalGender 

type GrammaticalGender int

enum Type for the grammatical gender of a type

type InstantiatedGenericType added in v1.0.0 

type InstantiatedGenericType struct {
	Actual Type
}

represents a resolved generic type that is used during parsing of the generic function

func (*InstantiatedGenericType) Gender added in v1.0.0 

func (t *InstantiatedGenericType) Gender() GrammaticalGender

func (*InstantiatedGenericType) String added in v1.0.0 

func (t *InstantiatedGenericType) String() string

type ListType 

type ListType struct {
	ElementType Type
}

func CastList 

func CastList(t Type) (ListType, bool)

acts like primitiveType, ok := t.(ListType) but respects TypeAliases

func (ListType) Gender 

func (ListType) Gender() GrammaticalGender

func (ListType) String 

func (listType ListType) String() string

type ParameterType 

type ParameterType struct {
	Type        Type
	IsReference bool
}

represents the type of a function parameter which may be a reference

func (ParameterType) String 

func (paramType ParameterType) String() string

type PrimitiveType 

type PrimitiveType int

enum type for primitive types (+ void) 

const (
	ZAHL          PrimitiveType = iota // int64
	KOMMAZAHL                          // float64
	BYTE                               // uint8
	WAHRHEITSWERT                      // bool
	BUCHSTABE                          // int32
	TEXT                               // string
)

func CastPrimitive 

func CastPrimitive(t Type) (PrimitiveType, bool)

acts like primitiveType, ok := t.(PrimitiveType) but respects TypeAliases

func (PrimitiveType) Gender 

func (p PrimitiveType) Gender() GrammaticalGender

func (PrimitiveType) String 

func (p PrimitiveType) String() string

type StructField 

type StructField struct {
	// name of the field
	Name string
	// type of the field
	Type Type
}

represents a single field of a struct

type StructType 

type StructType struct {
	// name of the struct
	Name string

	// grammatical gender of the struct name
	GramGender GrammaticalGender
	// fields of the struct
	// in order of declaration
	Fields []StructField
	// contains filtered or unexported fields
}

represents the type of a ddp struct

func CastStruct 

func CastStruct(t Type) (*StructType, bool)

acts like primitiveType, ok := t.(*StructType) but respects TypeAliases

func GetInstantiatedStructType added in v1.0.0 

func GetInstantiatedStructType(s *GenericStructType, genericTypes []Type) *StructType

returns a new struct type with the fields filled in correctly

func (*StructType) Gender 

func (t *StructType) Gender() GrammaticalGender

func (*StructType) String 

func (t *StructType) String() string

type Type 

type Type interface {

	// the grammatical Gender of the Type
	Gender() GrammaticalGender
	// string representation of the type (its name)
	String() string
	// contains filtered or unexported methods
}

holds information about a DDP-Type

func GetInstantiatedType added in v1.0.0 

func GetInstantiatedType(t Type, genericTypes map[string]Type) Type

instantiates a type by replacing nested occurences of generic types with the actual types

func GetListElementType added in v1.0.0 

func GetListElementType(typ Type) Type

gets the underlying type of a List if typ is not a list it is returned unchanged

func GetNestedListElementType added in v1.0.0 

func GetNestedListElementType(typ Type) Type

gets the underlying type for nested lists if typ is not a list type typ is returned

func GetUnderlying 

func GetUnderlying(t Type) Type

returns the underlying type for nested TypeAliases

func ListTrueUnderlying 

func ListTrueUnderlying(typ Type) Type

Returns the True Underlying type for a list that is the element type of a list all the way down example: - int -> int - list(int) -> int - list(typedef(int)) -> int - list(list(int)) -> int - list(list(typedef(int))) -> int

func TrueUnderlying 

func TrueUnderlying(t Type) Type

returns the underlying type for nested TypeAliases and TypeDefs does not recurse through list element types examples: - int -> int - typealias(int) -> int - typedef(int) -> int - list(int) -> list(int) - typedef(list(int)) -> list(int)

func UnifyGenericType added in v1.0.0 

func UnifyGenericType(argType Type, paramType ParameterType, genericTypes map[string]Type) Type

helper to unify generic types in a loop

type TypeAlias 

type TypeAlias struct {
	Name       string
	Underlying Type
	GramGender GrammaticalGender
}

a type alias only refers to another type with a new name

func CastTypeAlias 

func CastTypeAlias(t Type) (*TypeAlias, bool)

func (*TypeAlias) Gender 

func (a *TypeAlias) Gender() GrammaticalGender

func (*TypeAlias) String 

func (a *TypeAlias) String() string

type TypeDef 

type TypeDef struct {
	Name       string
	Underlying Type
	GramGender GrammaticalGender
}

a typedef defines a new type that is equal to another

func CastTypeDef 

func CastTypeDef(t Type) (*TypeDef, bool)

func (*TypeDef) Gender 

func (d *TypeDef) Gender() GrammaticalGender

func (*TypeDef) String 

func (d *TypeDef) String() string

type Variable 

type Variable struct{}

func (Variable) Gender 

func (Variable) Gender() GrammaticalGender

func (Variable) String 

func (Variable) String() string

type VoidType 

type VoidType struct{}

func (VoidType) Gender 

func (VoidType) Gender() GrammaticalGender

func (VoidType) String 

func (VoidType) String() string

Source Files

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