A string template, that is, a string start, followed by any number of value expression and string mid pairs, followed by a value expression and a string end.

(The distinction between string starts, mids, and ends is a purely lexical one, and not covered in ceylon.ast.)

There must be at least one expression in a string template, and the number of string literals must be exactly the number of expressions plus one.

Examples:

"Elapsed: `` tEnd - tStart ``ms"
"Hello, ``person.firstName`` ``person.lastName``. How nice to see you back in ``person.homeTown``."

no subtypes hierarchy

Initializer
StringTemplate([StringLiteral+] literals, [ValueExpression+] expressions)
Parameters:
  • literals

    The string literals of the string template, in order of appearance.

  • expressions

    The expressions in the string template, in order of appearance.

Attributes
childrenSource Codeshared actual [<StringLiteral|Expression>+] children

The child nodes of this node.

Refines Expression.children ultimately refines Node.children
expressionsSource Codeshared [ValueExpression+] expressions

The expressions in the string template, in order of appearance.

hashSource Codeshared actual Integer hash

The hash value of the value, which allows the value to be an element of a hash-based set or key of a hash-based map. Implementations must respect the constraint that:

  • if x==y then x.hash==y.hash.

Therefore, a class which refines equals must also refine hash.

Refines Object.hash
literalsSource Codeshared [StringLiteral+] literals

The string literals of the string template, in order of appearance.

Inherited Attributes
Attributes inherited from: Node
Attributes inherited from: Object
Methods
copySource Codeshared StringTemplate copy([StringLiteral+] literals = ..., [ValueExpression+] expressions = ...)
Parameters:
  • literals = this.literals
  • expressions = this.expressions
equalsSource Codeshared actual Boolean equals(Object that)

Determine if two values are equal. Implementations should respect the constraints that:

  • if x===y then x==y (reflexivity),
  • if x==y then y==x (symmetry),
  • if x==y and y==z then x==z (transitivity).

Furthermore it is recommended that implementations ensure that if x==y then x and y have the same concrete class.

A class which explicitly refines equals() is said to support value equality, and the equality operator == is considered much more meaningful for such classes than for a class which simply inherits the default implementation of identity equality from Identifiable.

transformSource Codeshared actual Result transform<out Result>(Transformer<Result> transformer)

Transform this node with the given transformer by calling the appropriate transformX method on the transformer.

If you have a Node node that’s actually an LIdentifier instance, then the runtime will call LIdentifier.transform; therefore, this method is by nature narrowing. This means that if transformer is a NarrowingTransformer, calling node.transform(transformer) is equivalent to calling transformer.transformNode(node). On the other hand, if transformer is a WideningTransformer, then the two operations are very different.

Inherited Methods
Methods inherited from: Node