Package nz.org.riskscape.rl.ast

Class StepLink

java.lang.Object

nz.org.riskscape.rl.ast.StepLink

All Implemented Interfaces:

AST

public class StepLink
extends Object

Constructor Summary

Constructors

Constructor	Description
StepLink(StepDeclaration lhs, Token chain, StepDeclaration rhs)

Method Summary

Modifier and Type	Method	Description
protected void	appendSource(StringBuilder appendTo)	Implementers extend this to append their source to the given string builder.
protected static void	appendSource(AST ast, StringBuilder appendTo)	Helper method for appending the source of another ast element to a string builder, efficiently if possible.
protected void	appendString(StringBuilder appendTo)	Append a simplified string representation to the builder.
protected boolean	canEqual(Object other)
boolean	equals(Object o)
Optional<Pair<Token,Token>>	getBoundary()
Token	getChain()
StepDeclaration	getLhs()
StepDeclaration	getRhs()
int	hashCode()
final String	toSource()
final String	toString()	Returns a simplified view of the ast in a source-like fashion, but with a lot of details left out for conciseness

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface nz.org.riskscape.rl.ast.AST

isA, switchType

Constructor Details

StepLink

public StepLink(StepDeclaration lhs,
 Token chain,
 StepDeclaration rhs)

Method Details

getBoundary

public Optional<Pair<Token,Token>> getBoundary()

Returns:

a pair of tokens that represent the start and end of this expression, to be used when giving users information about where errors have occurred. If the expression has been rebuilt then the boundary may be empty or it may be from the original AST. Intended for use in problems to trace errors back to their source.

appendString

protected void appendString(StringBuilder appendTo)

Append a simplified string representation to the builder. Default implementation uses appendSource. Subclasses can override to provide a more concise representation.

appendSource

protected void appendSource(StringBuilder appendTo)

Implementers extend this to append their source to the given string builder. Done via string builder to encourage a more efficient implementation than is possible with concatenating multiple toString calls that typically contruct a string builder anyway.

equals

public boolean equals(Object o)

canEqual

protected boolean canEqual(Object other)

hashCode

public int hashCode()

getLhs

public StepDeclaration getLhs()

getChain

public Token getChain()

getRhs

public StepDeclaration getRhs()

appendSource

protected static void appendSource(AST ast,
 StringBuilder appendTo)

Helper method for appending the source of another ast element to a string builder, efficiently if possible.

toString

public final String toString()

Returns a simplified view of the ast in a source-like fashion, but with a lot of details left out for conciseness

Overrides:

toString in class Object

toSource

public final String toSource()

Specified by:

toSource in interface AST

Returns:

a normalized version of the AST that can be parsed to be exactly the same AST as this