Class ModifierFormulaParser

This parser implements the Shunting-yard Algorithm and Reverse Polish Notation to take a formula written like "3 + ( 45 / 3 ) - 4" and parse it down to a single result.

Inheritance
Object
ModifierFormulaParser
Implements
IInjectable
Inherited Members
Namespace: IdleKit.Gameplay
Assembly: cs.temp.dll.dll
Syntax
public class ModifierFormulaParser : IModifierFormulaParser, IInjectable

Fields

_cachedRPNResult

Declaration
protected IToken[] _cachedRPNResult
Field Value
Type Description
IToken[]

_modifierGroupLookup

Declaration
protected Dictionary<string, IModifierGroupData> _modifierGroupLookup
Field Value
Type Description
Dictionary<String, IModifierGroupData>

BASE

Declaration
protected static Regex BASE
Field Value
Type Description
Regex

COMMA

Declaration
protected static Regex COMMA
Field Value
Type Description
Regex

FUNCTION

Declaration
protected static Regex FUNCTION
Field Value
Type Description
Regex

LEFT_PAREN

Declaration
protected static Regex LEFT_PAREN
Field Value
Type Description
Regex

OPERATOR

Declaration
protected static Regex OPERATOR
Field Value
Type Description
Regex

RIGHT_PAREN

Declaration
protected static Regex RIGHT_PAREN
Field Value
Type Description
Regex

VALUE

Declaration
protected static Regex VALUE
Field Value
Type Description
Regex

Methods

GetPrecedence(String)

Declaration
protected virtual int GetPrecedence(string op)
Parameters
Type Name Description
String op
Returns
Type Description
Int32

GetRPNResult(String)

Return an array of tokens in Reverse Polish Notation using the Shunting-yard Algorithm.

Declaration
protected virtual IToken[] GetRPNResult(string formula)
Parameters
Type Name Description
String formula

The formula to process. Must contain spaces between values, parentheses and operators.
Returns
Type Description
IToken[]

Inject(IResolver)

Declaration
public void Inject(IResolver resolver)
Parameters
Type Name Description
IResolver resolver

Parse(String, IModifier[], IModifierGroupData[], Double, Int32)

Declaration
public virtual double Parse(string formula, IModifier[] modifiers, IModifierGroupData[] modifierGroupDatas, double baseAmount, int additionalLevels)
Parameters
Type Name Description
String formula
IModifier[] modifiers
IModifierGroupData[] modifierGroupDatas
Double baseAmount
Int32 additionalLevels
Returns
Type Description
Double

ParseRPN(IToken[], IModifier[], Double, Int32)

Given an array of tokens will output a final result.

Declaration
protected virtual double ParseRPN(IToken[] tokens, IModifier[] modifiers, double baseAmount, int additionalLevels)
Parameters
Type Name Description
IToken[] tokens

An array of tokens in Reverse Polish Notation format.
IModifier[] modifiers

The IModifier objects that this formula interacts with
Double baseAmount

The base amount to be used in the formula
Int32 additionalLevels

Additional levels to be passed into IModifierData calculations
Returns
Type Description
Double

Implements

IInjectable