Fields
| Name | Description |
|---|---|
open isVar: Boolean
|
Checks whether the current term is a variable.
This method is guaranteed to return |
open variables: Sequence<Var>
|
The sequence of Variables directly or indirectly contained in the current term. Variables are lazily returned in a non-deterministic order. Notice that no occurrence-check is performed. Thus, if a Term contains the same Variable twice or more times, then the variables sequence may contain as many occurrences of that Variable |
open isAnonymous: Boolean
|
|
abstract name: String
|
|
abstract id: String
|
|
abstract completeName: String
|
|
abstract isNameWellFormed: Boolean
|
Methods
freshCopy
abstract fun freshCopy(): Var
ReturnValue
| Name | Description |
|---|---|
Var
|
a fresh copy of the current term which is different because variables are consistently renamed |
freshCopy
abstract fun freshCopy(scope: Scope): Var
Returns a fresh copy of this Term, similarly to freshCopy, possibly reusing variables from the provided scope,
if any
Parameters
| Name | Description |
|---|---|
scope: Scope
|
the Scope containing variables to be used in copying |
ReturnValue
| Name | Description |
|---|---|
Var
|
a fresh copy of the current term which is different because variables are consistently renamed |
Extensions
toClause
fun Term.toClause(source: Any?, line: Int, column: Int): Clause
Receiver
| Name | Description |
|---|---|
Term
|
Parameters
| Name | Description |
|---|---|
source: Any?
|
|
line: Int
|
|
column: Int
|
ReturnValue
| Name | Description |
|---|---|
Clause
|
unfoldGoals
fun Term.unfoldGoals(): Sequence
Receiver
| Name | Description |
|---|---|
Term
|
ReturnValue
| Name | Description |
|---|---|
Sequence
|
toGoals
fun Term.toGoals(): Cursor
Receiver
| Name | Description |
|---|---|
Term
|
ReturnValue
| Name | Description |
|---|---|
Cursor
|
isWellFormed
fun Term.isWellFormed(): Boolean
Check whether the receiver term is a well-formed predication
Receiver
| Name | Description |
|---|---|
Term
|
ReturnValue
| Name | Description |
|---|---|
Boolean
|
prepareForExecutionAsGoal
fun Term.prepareForExecutionAsGoal(): Struct
Prepares the receiver Goal for execution
For example, the goal A is transformed, after preparation for execution, as the Term: call(A)
Receiver
| Name | Description |
|---|---|
Term
|
ReturnValue
| Name | Description |
|---|---|
Struct
|
evalAsExpression
fun Term.evalAsExpression(request: Request<*>, index: Int?): Term
Receiver
| Name | Description |
|---|---|
Term
|
Parameters
| Name | Description |
|---|---|
request: Request<*>
|
|
index: Int?
|
ReturnValue
| Name | Description |
|---|---|
Term
|
CompanionObject
Var
Fields
| Name | Description |
|---|---|
val ANONYMOUS_NAME: String
|
|
val NAME_PATTERN: @JvmField
|
Methods
of
fun of(name: String): Var
Parameters
| Name | Description |
|---|---|
name: String
|
ReturnValue
| Name | Description |
|---|---|
Var
|
escapeName
fun escapeName(string: String): String
Parameters
| Name | Description |
|---|---|
string: String
|
ReturnValue
| Name | Description |
|---|---|
String
|
escapeNameIfNecessary
fun escapeNameIfNecessary(string: String): String
Parameters
| Name | Description |
|---|---|
string: String
|
ReturnValue
| Name | Description |
|---|---|
String
|
Extensions
parse
fun Var.Companion.parse(input: String, operators: OperatorSet): Var
Receiver
| Name | Description |
|---|---|
Var.Companion
|
Parameters
| Name | Description |
|---|---|
input: String
|
|
operators: OperatorSet
|
ReturnValue
| Name | Description |
|---|---|
Var
|
Returns a fresh copy of this Term, that is, an instance of Term which is equal to the current one in any aspect, except variables directly or indirectly contained into this Term, which are refreshed. This means that it could return itself, if no variable is present (ground term), or a new Term with freshly generated variables.
Variables are refreshed consistently, meaning that, if more variables exists within this Term having the same name, all fresh copies of such variables will have the same complete name.
Example: "f(X, g(X))".freshCopy() returns something like "f(X_1, g(X_1))" instead of "f(X_1, g(X_2))"
Notice that, if the current term is ground, the same object may be returned as a result by this method.