org.unitConverter.math

Class ExpressionParser.Builder<T>

java.lang.Object

org.unitConverter.math.ExpressionParser.Builder<T>

Type Parameters:

T - type of object that exists in parsed expressions

Enclosing class:

ExpressionParser<T>

public static final class ExpressionParser.Builder<T>
extends java.lang.Object

A builder that can create ExpressionParser<T> instances.

Since:

2019-03-17, v0.2.0

Author:

Adrien Hopkins

Constructor Summary

Constructors

Constructor and Description
Builder(java.util.function.Function<java.lang.String,? extends T> objectObtainer) Creates the Builder.

Method Summary

Modifier and Type	Method and Description
ExpressionParser.Builder<T>	addBinaryOperator(java.lang.String text, java.util.function.BinaryOperator<T> operator, int priority) Adds a binary operator to the builder.
ExpressionParser.Builder<T>	addSpaceFunction(java.lang.String operator) Adds a function for spaces.
ExpressionParser.Builder<T>	addUnaryOperator(java.lang.String text, java.util.function.UnaryOperator<T> operator, int priority) Adds a unary operator to the builder.
ExpressionParser<T>	build()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Builder

public Builder(java.util.function.Function<java.lang.String,? extends T> objectObtainer)

Creates the Builder.

Parameters:

objectObtainer - a function that can turn strings into objects of the type handled by the parser.

Throws:

java.lang.NullPointerException - if objectObtainer is null

Since:

2019-03-17, v0.2.0

Method Detail

addBinaryOperator

public ExpressionParser.Builder<T> addBinaryOperator(java.lang.String text,
                                                     java.util.function.BinaryOperator<T> operator,
                                                     int priority)

Adds a binary operator to the builder.

Parameters:

text - text used to reference the operator, like '+'

operator - operator to add

priority - operator's priority, which determines which operators are applied first

Returns:

this builder

Throws:

java.lang.NullPointerException - if text or operator is null

Since:

2019-03-17, v0.2.0

addSpaceFunction

public ExpressionParser.Builder<T> addSpaceFunction(java.lang.String operator)

Adds a function for spaces. You must use the text of an existing binary operator.

Parameters:

operator - text of operator to use

Returns:

this builder

Since:

2019-03-22, v0.2.0

addUnaryOperator

public ExpressionParser.Builder<T> addUnaryOperator(java.lang.String text,
                                                    java.util.function.UnaryOperator<T> operator,
                                                    int priority)

Adds a unary operator to the builder.

Parameters:

text - text used to reference the operator, like '-'

operator - operator to add

priority - operator's priority, which determines which operators are applied first

Returns:

this builder

Throws:

java.lang.NullPointerException - if text or operator is null

Since:

2019-03-17, v0.2.0

build

public ExpressionParser<T> build()

Returns:

an ExpressionParser<T> instance with the properties given to this builder

Since:

2019-03-17, v0.2.0