interface Block: Recursive, Any
Fields
| Name | Description |
|---|---|
open isBlock: Boolean
|
Checks whether the current term is a logic block.
This method is guaranteed to return |
open isEmptyBlock: Boolean
|
Checks whether the current term is an empty logic block.
This method is guaranteed to return |
open functor: String
|
The functor of this Struct. |
Methods
freshCopy
abstract fun freshCopy(): Block
ReturnValue
| Name | Description |
|---|---|
Block
|
a fresh copy of the current term which is different because variables are consistently renamed |
freshCopy
abstract fun freshCopy(scope: Scope): Block
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 |
|---|---|
Block
|
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
|
extractSignature
fun Struct.extractSignature(): Signature
Receiver
| Name | Description |
|---|---|
Struct
|
ReturnValue
| Name | Description |
|---|---|
Signature
|
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
Block
interface Block: Recursive, Any
Fields
| Name | Description |
|---|---|
const FUNCTOR: String
|
|
const EMPTY_FUNCTOR: String
|
Methods
of
fun of(vararg terms: Term): Block
Parameters
| Name | Description |
|---|---|
vararg terms: Term
|
ReturnValue
| Name | Description |
|---|---|
Block
|
of
fun of(terms: List<Term>): Block
Parameters
| Name | Description |
|---|---|
terms: List<Term>
|
ReturnValue
| Name | Description |
|---|---|
Block
|
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.