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module
imports
static-semantics/entities/annotations
static-semantics/types/built-ins
static-semantics/types/type-extensions
static-semantics/webdsl
signature
constructors // semantic types
// list of argument types, return type
// and BOOL that indicates if function is static or not
: string * list(TYPE) * TYPE * BOOL -> TYPE
: string * list(TYPE) -> TYPE
: string * scope -> TYPE
: string * scope -> TYPE
: string * scope -> TYPE
: string * scope -> TYPE
: string * list(TYPE) -> TYPE
// BOOL indicates if template is ajax-enabled or not
: string * list(TYPE) * BOOL -> TYPE
// access control
: string * list(TYPE) -> TYPE
: list(TYPE) -> TYPE
: TYPE -> TYPE
: TYPE -> TYPE
: TYPE -> TYPE
// built-in types without scopes
: string * scope -> TYPE
: string * scope -> TYPE
: list(TYPE) * scope -> TYPE
: TYPE
: TYPE
: TYPE
: TYPE
: TYPE
rules // types of constant expressions
typeOfExp(s, exp@True()) = :-
t == bool(s),
@exp.type := t.
typeOfExp(s, exp@False()) = :-
t == bool(s),
@exp.type := t.
typeOfExp(_, exp@Null()) = NULL() :-
@exp.type := NULL().
typeOfExp(s, Const(c)) = typeOfConst(s, c).
typeOfPlaceholderExp(s, PHConst(c)) = typeOfConst(s, c).
: scope * ConstValue -> TYPE
typeOfConst(s, exp@Int(_)) = :-
t == int(s),
@exp.type := t.
typeOfConst(s, exp@Long(_)) = :-
t == long(s),
@exp.type := t.
typeOfConst(s, exp@Float(_)) = :-
t == float(s),
@exp.type := t.
typeOfConst(, exp@StringConst(str)) = :-
t == string(s),
stringOk(s, str),
@exp.type := t.
: scope * String
stringOk(s, String(parts)) :- stringPartsOk(s, parts).
maps stringPartOk(*, list(*))
: scope * StringPart
stringPartOk(s, StringValue(_)).
stringPartOk(s, InterpExp(exp)) :- typed(s, exp).
stringPartOk(s, InterpValue(InterpSimpleExp(simple_exp))) :-
inequalType(typeOfSimpleExp(s, simple_exp), UNTYPED()).
rules // type compatibility of constants
// numeric types
typeCompatibleB(BUILTINTYPE("Long", _), BUILTINTYPE("Int", _)) = TRUE().
typeCompatibleB(BUILTINTYPE("Int", _), BUILTINTYPE("Long", _)) = TRUE().
// string types
typeCompatibleB(T1, BUILTINTYPE("String", _)) = isStringCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("Secret", _)) = isStringCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("Email", _)) = isStringCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("URL", _)) = isStringCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("WikiText", _)) = isStringCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("Text", _)) = isStringCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("Patch", _)) = isStringCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("Placeholder", _)) = isStringCompatibleTypeB(T1).
// date types
typeCompatibleB(T1, BUILTINTYPE("Date", _)) = isDateCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("DateTime", _)) = isDateCompatibleTypeB(T1).
typeCompatibleB(T1, BUILTINTYPE("Time", _)) = isDateCompatibleTypeB(T1).
// misc
typeCompatibleB(LIST(T1), LIST(T2)) = typeCompatibleB(T1, T2).
typeCompatibleB(SET(T1), SET(T2)) = typeCompatibleB(T1, T2).
typeCompatibleB(REF(_), REF(_)) = TRUE().
typeCompatibleB(T1, REF(T2)) = typeCompatibleB(T1, T2). // ref is compatible both ways
typeCompatibleB(REF(T1), T2) = typeCompatibleB(T1, T2). // ref is compatible both ways
typeCompatibleB(NULL(), _) = TRUE().
typeCompatibleB(_, BUILTINTYPE("Object", _)) = TRUE().
rules // utils
isDateCompatibleType : TYPE
isDateCompatibleType(t) :- isDateCompatibleTypeB(t) == TRUE().
: TYPE -> BOOL
isDateCompatibleTypeB(_) = FALSE().
isDateCompatibleTypeB(BUILTINTYPE("Date", _)) = TRUE().
isDateCompatibleTypeB(BUILTINTYPE("DateTime", _)) = TRUE().
isDateCompatibleTypeB(BUILTINTYPE("Time", _)) = TRUE().
isDateCompatibleTypeB(BUILTINTYPE("Object", _)) = TRUE().
: TYPE
isStringCompatibleType(t) :- isStringCompatibleTypeB(t) == TRUE().
: TYPE -> BOOL
isStringCompatibleTypeB(_) = FALSE().
isStringCompatibleTypeB(BUILTINTYPE("String", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("Secret", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("Email", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("URL", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("WikiText", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("Text", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("Patch", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("Object", _)) = TRUE().
isStringCompatibleTypeB(BUILTINTYPE("Placeholder", _)) = TRUE().
rules // map sorts to semantic types
: scope * Sort -> TYPE
typeOfSortTyped(s, sort) = :-
t == typeOfSort(s, sort),
t != UNTYPED() | error $[Cannot resolve type [t]].
typesOfSorts maps typeOfSort(*, list(*)) = list(*)
: scope * Sort -> TYPE
typeOfSort(_, _) = UNTYPED(). // untyped by default
typeOfSort(s, SimpleSort("Int")) = int(s).
typeOfSort(s, SimpleSort("Float")) = float(s).
typeOfSort(s, SimpleSort("Long")) = long(s).
typeOfSort(s, SimpleSort("String")) = string(s).
typeOfSort(s, SimpleSort("Secret")) = secret(s).
typeOfSort(s, SimpleSort("Email")) = email(s).
typeOfSort(s, SimpleSort("URL")) = url(s).
typeOfSort(s, SimpleSort("WikiText")) = wikitext(s).
typeOfSort(s, SimpleSort("Text")) = text(s).
typeOfSort(s, SimpleSort("Patch")) = patch(s).
typeOfSort(s, SimpleSort("Placeholder")) = placeholder(s).
typeOfSort(s, SimpleSort("Date")) = date(s).
typeOfSort(s, SimpleSort("DateTime")) = datetime(s).
typeOfSort(s, SimpleSort("Time")) = time(s).
typeOfSort(_, SimpleSort("Regex")) = REGEX().
typeOfSort(s, SimpleSort("Bool")) = bool(s).
typeOfSort(_, SimpleSort("Void")) = VOID().
typeOfSort(s, SimpleSort("UUID")) = uuid(s).
typeOfSort(_, SimpleSort("TemplateElements")) = TEMPLATEELEMENTS().
typeOfSort(s, SimpleSort("File")) = file(s).
typeOfSort(s, SimpleSort("Image")) = image(s).
// in case it's not a built in simple sort, it must be an entity
typeOfSort(s, SimpleSort(x)) = definedType(s, x).
typeOfSort(s, GenericSort("List", [innerSort])) = LIST(typeOfSort(s, innerSort)).
typeOfSort(s, GenericSort(_, _)) = UNTYPED() :- false | error $[Only lists and sets with one type parameter are supported].
typeOfSort(s, GenericSort("Set", [innerSort])) = SET(typeOfSort(s, innerSort)).
typeOfSort(s, RefSort(innerSort)) = REF(typeOfSort(s, innerSort)).
rules // WebDSL definition of being a simple type: built-in simple sort (no generics, no ref, no entity etc)
: TYPE
isBuiltInType(t) :- isBuiltInTypeB(t) == TRUE().
: TYPE -> BOOL
isBuiltInTypeB(_) = FALSE(). // not a simple type by default
isBuiltInTypeB(BUILTINTYPE(_, _)) = TRUE().
rules // type related expressions
typeOfExp(, Cast(exp, sort)) = :- {}
t == typeOfExpTyped(s, exp),
t' == typeOfSortTyped(s, sort),
or(typeCompatibleB(t, t'), typeCompatibleB(t', t)) | error $[Type [t] cannot be cast to [t']].
typeOfExp(, IsA(exp, sort)) = bool(s) :- {t t'}
t == typeOfExpTyped(s, exp),
t' == typeOfSortTyped(s, sort).
rules // resolve reference types
: scope * string -> TYPE
definedType(s, ) = t :- {}
resolveType(s, name) == [(_, (name', t))|_] | error $[Type [name] does not exist], // correct error message for tests
@name.ref := name'.
: scope * string -> TYPE
definedTypeCustomError(s, ) = t :- {}
resolveType(s, name) == [(_, (name', t))|_],
@name.ref := name'.
: scope * string -> TYPE
definedTypeNoRef(s, ) = t :-
resolveType(s, name) == [(_, (_, t))|_] | error $[Type [name] does not exist]. // correct error message for tests
: scope * string -> TYPE
definedTypeIfExists(s, name) = definedTypeIfExists_internal(s, resolveType(s, name)).
: scope * list((path * (string * TYPE))) -> TYPE
definedTypeIfExists_internal(_, [(_, (_, t))|_]) = t.
definedTypeIfExists_internal(s, []) = entity(s).
: scope * string -> TYPE
variableType(s, ) = t :- {}
resolveVar(s, x) == [(_, (x', t))|_] | error $[Variable [x] not defined], // correct error message for tests
@x.ref := x'.
: scope * string -> TYPE
propertyType(s, ) = t :- { }
ps == withoutAnnotation(resolveProperty(s, x), OVERRIDABLE()),
ps == [(_, (x', t))],
@x.ref := x'.
: scope * string -> TYPE
propertyTypeNoRef(s, x) = t :- { x' }
ps == withoutAnnotation(resolveProperty(s, x), OVERRIDABLE()),
ps == [(_, (x', t))].
: list((path * (string * TYPE))) * string * string
singleResult([], type, ) :- false | error $[[type] [x] is not defined] @x.
singleResult([_ | [_ | _]], type, ) :- false | error $[[type] [x] is defined multiple times] @x.
singleResult(_, _, _).
: scope * string -> TYPE
pageType(s, ) = t :- {}
resolvePage(s, p) == [(_, (p', t@PAGE(_, _)))|_], // no fixed error message here to allow more specific error messages on higher predicates
@p.ref := p'.
rules // utils
: TYPE -> TYPE
stripGenericType(t) = UNTYPED() :- false | error $[Must be a list or set, [t] given].
stripGenericType(REF(t)) = stripGenericType(t).
stripGenericType(LIST(t)) = t.
stripGenericType(SET(t)) = t.
: TYPE -> TYPE
stripOptionalSetOrListType(t) = t.
stripOptionalSetOrListType(LIST(t)) = t.
stripOptionalSetOrListType(SET(t)) = t.
maps stripRefType(list(*)) = list(*)
: TYPE -> TYPE
stripRefType(t) = t.
stripRefType(REF(t)) = stripRefType(t).
: scope * Exp
typed(s, exp) :- inequalType(typeOfExp(s, exp), UNTYPED()).
: TYPE * TYPE
inequalType(T1, T2) :- equalTypeB(T1, T2) == FALSE().
: TYPE * TYPE
equalType(T1, T2) :- equalTypeB(T1, T2) == TRUE().
: TYPE * TYPE -> BOOL
equalTypeB(T, T) = TRUE().
equalTypeB(_, _) = FALSE().
rules
: TYPE -> string
ppType(t) = "<unknown pretty print type>" :- try { false } | warning $[Couldn't pretty-print type [t]].
ppType(ENTITY(e, _)) = e.
ppType(STATICENTITY(e, _)) = e.
ppType(NATIVECLASS(nc, _)) = nc.
ppType(STATICNATIVECLASS(nc, _)) = nc.
ppType(BUILTINTYPE(t, _)) = t.
ppType(STATICBUILTINTYPE(t, _)) = t.
ppType(REGEX()) = "Regex".
ppType(VOID()) = "Void".
ppType(TEMPLATEELEMENTS()) = "TemplateElements".
ppType(NULL()) = "Null".
ppType(UNTYPED()) = "UNTYPED".
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