Package software.amazon.smithy.rulesengine.language.syntax.expressions.functions

Class Substring

java.lang.Object

software.amazon.smithy.rulesengine.language.syntax.SyntaxElement

software.amazon.smithy.rulesengine.language.syntax.expressions.Expression

software.amazon.smithy.rulesengine.language.syntax.expressions.functions.LibraryFunction

software.amazon.smithy.rulesengine.language.syntax.expressions.functions.Substring

All Implemented Interfaces:

FromSourceLocation, ToNode, TypeCheck, ToCondition, ToExpression

public final class Substring
extends LibraryFunction

A rule-set function for getting the substring of a string value.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	Substring.Definition	A FunctionDefinition for the Substring function.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ID

Fields inherited from class software.amazon.smithy.rulesengine.language.syntax.expressions.functions.LibraryFunction

definition, functionNode

Method Summary

Modifier and Type	Method	Description
<T> T	accept(ExpressionVisitor<T> visitor)	Invoke the ExpressionVisitor functions for this expression.
static Substring.Definition	getDefinition()	Gets the FunctionDefinition implementation.
static Substring	ofExpressions(ToExpression expression, int startIndex, int stopIndex, boolean reverse)	Creates a Substring function from the given expressions.
static Substring	ofExpressions(ToExpression expression, ToExpression startIndex, ToExpression stopIndex, ToExpression reverse)	Creates a Substring function from the given expressions.

Methods inherited from class software.amazon.smithy.rulesengine.language.syntax.expressions.functions.LibraryFunction

equals, expectOneArgument, getArguments, getName, getSourceLocation, hashCode, toNode, toString, typeCheckLocal

Methods inherited from class software.amazon.smithy.rulesengine.language.syntax.expressions.Expression

fromNode, getLiteral, getReference, of, of, of, parseShortform, toConditionBuilder, toExpression, type, typeCheck

Methods inherited from class software.amazon.smithy.rulesengine.language.syntax.SyntaxElement

booleanEqual, getAttr, getAttr, isSet, isValidHostLabel, not, parseUrl, stringEqual, substring, template

Methods inherited from class java.lang.Object

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

Methods inherited from interface software.amazon.smithy.rulesengine.language.syntax.ToCondition

toCondition, toCondition

Field Details

ID

public static final String ID

See Also:

• Constant Field Values

Method Details

getDefinition

public static Substring.Definition getDefinition()

Gets the FunctionDefinition implementation.

Returns:

the function definition.

ofExpressions

public static Substring ofExpressions(ToExpression expression,
 ToExpression startIndex,
 ToExpression stopIndex,
 ToExpression reverse)

Creates a Substring function from the given expressions.

Parameters:

expression - the string to extract from.

startIndex - the starting index.

stopIndex - the ending index.

reverse - the reverse order argument.

Returns:

The resulting Substring function.

ofExpressions

public static Substring ofExpressions(ToExpression expression,
 int startIndex,
 int stopIndex,
 boolean reverse)

Creates a Substring function from the given expressions.

Parameters:

expression - the string to extract from.

startIndex - the starting index.

stopIndex - the ending index.

reverse - the reverse order argument.

Returns:

The resulting Substring function.

accept

public <T> T accept(ExpressionVisitor<T> visitor)

Description copied from class: Expression

Invoke the ExpressionVisitor functions for this expression.

Specified by:

accept in class Expression

Type Parameters:

T - the visitor return type.

Parameters:

visitor - the visitor to be invoked.

Returns:

the return value of the visitor.