Class ConditionParser

java.lang.Object
org.apache.maven.impl.model.profile.ConditionParser
public class ConditionParser extends Object
The ConditionParser class is responsible for parsing and evaluating expressions. It supports tokenizing the input expression and resolving custom functions passed in a map. This class implements a recursive descent parser to handle various operations including arithmetic, logical, and comparison operations, as well as function calls.

  • Constructor Details

    • ConditionParser

      public ConditionParser(Map<String, ConditionParser.ExpressionFunction> functions, UnaryOperator<String> propertyResolver)
      Constructs a new ConditionParser with the given function mappings.
      Parameters:
      functions - a map of function names to their corresponding ExpressionFunction implementations
      propertyResolver - the property resolver

  • Method Details

    • parse

      public Object parse(String expression)
      Parses the given expression and returns the result of the evaluation.
      Parameters:
      expression - the expression to be parsed
      Returns:
      the result of parsing and evaluating the expression

    • toString

      public static String toString(Object value)
      Converts an object to a string representation. If the object is a Double, it formats it without any decimal places. Otherwise, it uses the String.valueOf method.

      Formatting uses Locale.ROOT so that profile activation does not depend on the default locale of the machine running the build. Without it, a locale whose default numbering system is not latin (for example hi-IN-u-nu-deva) would render 42 as ४२.

      Parameters:
      value - the object to convert to a string
      Returns:
      the string representation of the object

    • toBoolean

      public static Boolean toBoolean(Object value)
      Converts an object to a boolean value. If the object is: - a Boolean, returns its value directly. - a String, returns true if the string is non-blank. - a Number, returns true if its integer value is not zero. For other object types, returns true if the object is non-null.
      Parameters:
      value - the object to convert to a boolean
      Returns:
      the boolean representation of the object

    • toDouble

      public static double toDouble(Object value)
      Converts an object to a double value. If the object is: - a Number, returns its double value. - a String, tries to parse it as a double. - a Boolean, returns 1.0 for true, 0.0 for false. If the object cannot be converted, a RuntimeException is thrown.
      Parameters:
      value - the object to convert to a double
      Returns:
      the double representation of the object
      Throws:
      RuntimeException - if the object cannot be converted to a double

    • toInt

      public static int toInt(Object value)
      Converts an object to an integer value. If the object is: - a Number, returns its integer value. - a String, tries to parse it as an integer, or as a double then converted to an integer. - a Boolean, returns 1 for true, 0 for false. If the object cannot be converted, a RuntimeException is thrown.
      Parameters:
      value - the object to convert to an integer
      Returns:
      the integer representation of the object
      Throws:
      RuntimeException - if the object cannot be converted to an integer