Functions (JOSM)

java.lang.Object
- org.openstreetmap.josm.gui.mappaint.mapcss.Functions

```
public final class Functions
extends Object
```
List of functions that can be used in MapCSS expressions. First parameter can be of type Environment (if needed). This is automatically filled in by JOSM and the user only sees the remaining arguments. When one of the user supplied arguments cannot be converted the expected type or is null, the function is not called and it returns null immediately. Add the annotation ExpressionFactory.NullableArguments to allow null arguments. Every method must be static.

Since:

15245 (extracted from ExpressionFactory)

Constructor Summary

Constructors
Modifier Constructor and Description

private Functions()

Constructors
Modifier	Constructor and Description
`private`	`Functions()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static float`	`alpha(Color c)` Get the value of the alpha channel in the rgba color model
`static Object`	`any(Environment ignored, Object... args)` Returns the first non-null object.
`static Float`	`areasize(Environment env)` Returns the area of a closed way or multipolygon in square meters or `null`.
`static boolean`	`at(Environment env, double lat, double lon)` Determines if the object centroid lies at given lat/lon coordinates.
`static float`	`blue(Color c)` Get the value of the blue color channel in the rgb color model
`static Double`	`cardinal_to_radians(String cardinal)` Converts an angle diven in cardinal directions to radians.
`static LatLon`	`center(Environment env)` Returns the center of the environment OSM primitive.
`static String`	`child_tag(Environment env, String key)` Gets the value of the key `key` from the object's child.
`static String`	`color2html(Color c)` Computes the HTML notation (`#rrggbb`) for a color value).
`static String`	`concat(Environment ignored, Object... args)` Assembles the strings to one.
`static int`	`count_roles(Environment env, String... roles)` Returns the number of primitives in a relation with the specified roles.
`static Integer`	`count(List<?> lst)` Returns the number of elements in a list.
`static long`	`CRC32_checksum(String s)` Calculates the CRC32 checksum from a string (based on RFC 1952).
`static double`	`degree_to_radians(double degree)` Converts an angle in degrees to radians.
`static double`	`divided_by(double a, double b)` Function associated to the numeric "/" operator.
`static boolean`	`equal(Object a, Object b)` Determines if the objects `a` and `b` are equal.
`static Object`	`eval(Object o)` Identity function for compatibility with MapCSS specification.
`static Object`	`get(List<?> lst, float n)` Get the `n`th element of the list `lst` (counting starts at 0).
`static double`	`gpx_distance(Environment env)` Returns the lowest distance between the OSM object and a GPX point
`static boolean`	`greater_equal(float a, float b)` Function associated to the logical ">=" operator.
`static boolean`	`greater(float a, float b)` Function associated to the logical ">" operator.
`static float`	`green(Color c)` Get the value of the green color channel in the rgb color model
`static boolean`	`has_tag_key(Environment env, String key)` Determines whether the object has a tag with the given key.
`static Color`	`hsb_color(float h, float s, float b)` Create color from hsb color model.
`static Color`	`html2color(String html)` Creates a color value from an HTML notation, i.e., `#rrggbb`.
`static Float`	`index(Environment env)` Returns the index of node in parent way or member in parent relation.
`static boolean`	`inside(Environment env, String codes)` Determines if the object is inside territories matching given ISO3166 codes.
`static boolean`	`is_anticlockwise(Environment env)` Determines whether the way is `closed and oriented anticlockwise`, or non-closed and the `1st, 2nd and last node are in anticlockwise order`.
`static boolean`	`is_clockwise(Environment env)` Determines whether the way is `closed and oriented clockwise`, or non-closed and the `1st, 2nd and last node are in clockwise order`.
`static Boolean`	`is_prop_set(Environment env, String key)` Determines whether property `key` is set.
`static Boolean`	`is_prop_set(Environment env, String key, String layer)` Determines whether property `key` is set on layer `layer`.
`static boolean`	`is_right_hand_traffic(Environment env)` check if there is right-hand traffic at the current location
`static boolean`	`is_similar(String string1, String string2)` Check if two strings are similar, but not identical, i.e., have a Levenshtein distance of 1 or 2.
`static String`	`join_list(String separator, List<String> values)` Joins a list of `values` into a single string with fields separated by `separator`.
`static String`	`join(Environment ignored, String... args)` Assembles the strings to one, where the first entry is used as separator.
`static String`	`JOSM_pref(Environment env, String key, String def)` Obtains the JOSM key `Preferences` string for key `key`, and defaults to `def` if that is null.
`static Boolean`	`JOSM_search(Environment env, String searchStr)` Determines whether the JOSM search with `searchStr` applies to the object.
`static boolean`	`less_equal(float a, float b)` Function associated to the logical "<=" operator.
`static boolean`	`less(float a, float b)` Function associated to the logical "<" operator.
`static List<Object>`	`list(Environment ignored, Object... args)` Creates a list of values, e.g., for the `dashes` property.
`static String`	`lower(String s)` Converts string `s` to lowercase.
`static double`	`minus(double a, double b)` Function associated to the numeric "-" operator.
`static float`	`mod(float a, float b)` Function associated to the math modulo "%" operator.
`static boolean`	`not_equal(Object a, Object b)` Determines if the objects `a` and `b` are not equal.
`static boolean`	`not(boolean b)` Function associated to the logical "!" operator.
`static int`	`number_of_tags(Environment env)` Get the number of tags for the current primitive.
`static int`	`osm_changeset_id(Environment env)` Returns the id of the changeset the current object was last uploaded to.
`static long`	`osm_id(Environment env)` Returns the OSM id of the current object.
`static int`	`osm_timestamp(Environment env)` Returns the time of last modification to the current object, as timestamp.
`static long`	`osm_user_id(Environment env)` Returns the OSM user id who last touched the current object.
`static String`	`osm_user_name(Environment env)` Returns the OSM user name who last touched the current object.
`static int`	`osm_version(Environment env)` Returns the version number of the current object.
`static boolean`	`outside(Environment env, String codes)` Determines if the object is outside territories matching given ISO3166 codes.
`static Long`	`parent_osm_id(Environment env)` Returns the OSM id of the object's parent.
`static String`	`parent_tag(Environment env, String key)` Gets the first non-null value of the key `key` from the object's parent(s).
`static List<String>`	`parent_tags(Environment env, String key)` Gets a list of all non-null values of the key `key` from the object's parent(s).
`static Double`	`parent_way_angle(Environment env)` Get the rotation angle of the preceding parent way segment at the node location.
`private static int`	`parse_regex_flags(String flags)` Parse flags for regex usage.
`static double`	`plus(double a, double b)` Function associated to the numeric "+" operator.
`static Object`	`print(Object o)` Prints the object to the command line (for debugging purpose).
`static Object`	`println(Object o)` Prints the object to the command line, with new line at the end (for debugging purpose).
`static Object`	`prop(Environment env, String key)` Returns the value of the property `key`, e.g., `prop("width")`.
`static Object`	`prop(Environment env, String key, String layer)` Returns the value of the property `key` from layer `layer`.
`static float`	`red(Color c)` Get the value of the red color channel in the rgb color model
`static List<String>`	`regexp_match(String pattern, String target)` Tries to match string against pattern regexp and returns a list of capture groups in case of success.
`static List<String>`	`regexp_match(String pattern, String target, String flags)` Tries to match string against pattern regexp and returns a list of capture groups in case of success.
`static boolean`	`regexp_test(String pattern, String target)` Tests if string `target` matches pattern `pattern`
`static boolean`	`regexp_test(String pattern, String target, String flags)` Tests if string `target` matches pattern `pattern`
`static String`	`replace(String s, String target, String replacement)` Replaces in `s` every target} substring by `replacement`.
`static Color`	`rgb(float r, float g, float b)` Creates a color value with the specified amounts of `r`ed, `g`reen, `b`lue (arguments from 0.0 to 1.0)
`static Color`	`rgba(float r, float g, float b, float alpha)` Creates a color value with the specified amounts of `r`ed, `g`reen, `b`lue, `alpha` (arguments from 0.0 to 1.0)
`static String`	`role(Environment env)` Returns the role of current object in parent relation, or role of child if current object is a relation.
`static Object`	`setting(Environment env, String key)` Get value of a setting.
`static List<String>`	`sort_list(List<String> sortables)` Sort a list of strings
`static List<String>`	`sort(Environment ignored, String... sortables)` Sort an array of strings
`static List<String>`	`split(String sep, String toSplit)` Splits string `toSplit` at occurrences of the separator string `sep` and returns a list of matches.
`static String`	`substring(String s, float begin)` Returns the substring of `s` starting at index `begin` (inclusive, 0-indexed).
`static String`	`substring(String s, float begin, float end)` Returns the substring of `s` starting at index `begin` (inclusive) and ending at index `end`, (exclusive, 0-indexed).
`static List<String>`	`tag_regex(Environment env, String keyRegex)` Get keys that follow a regex
`static List<String>`	`tag_regex(Environment env, String keyRegex, String flags)` Get keys that follow a regex
`static String`	`tag(Environment env, String key)` Gets the value of the key `key` from the object in question.
`static double`	`times(double a, double b)` Function associated to the numeric "*" operator.
`static String`	`title(String str)` Returns a title-cased version of the string where words start with an uppercase character and the remaining characters are lowercase Also known as "capitalize".
`static boolean`	`to_boolean(String value)` Parses the string argument as a boolean.
`static byte`	`to_byte(String value)` Parses the string argument as a byte.
`static double`	`to_double(String value)` Parses the string argument as a double.
`static float`	`to_float(String value)` Parses the string argument as a float.
`static int`	`to_int(String value)` Parses the string argument as an int.
`static long`	`to_long(String value)` Parses the string argument as a long.
`static short`	`to_short(String value)` Parses the string argument as a short.
`static String`	`tr(Environment ignored, String... args)` Translates some text for the current locale.
`static List<String>`	`trim_list(List<String> strings)` Trim whitespaces from the strings `strings`.
`static String`	`trim(String s)` Trim whitespaces from the string `s`.
`static List<String>`	`uniq_list(List<String> values)` Get unique values
`static List<String>`	`uniq(Environment ignored, String... values)` Get unique values
`static String`	`upper(String s)` Converts string `s` to uppercase.
`static String`	`URL_decode(String s)` Percent-decode a string.
`static String`	`URL_encode(String s)` Percent-encode a string.
`static Float`	`waylength(Environment env)` Returns the length of the way in metres or `null`.
`static String`	`XML_encode(String s)` XML-encode a string.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Functions
```
private Functions()
```
- Method Detail
  - eval
```
public static Object eval(Object o)
```
    Identity function for compatibility with MapCSS specification.
    
    Parameters:
    
    o - any object
    
    Returns:
    
    o unchanged
  - plus
```
public static double plus(double a,
                          double b)
```
    Function associated to the numeric "+" operator.
    
    Parameters:
    
    a - the first operand
    
    b - the second operand
    
    Returns:
    
    Sum of arguments
    
    See Also:
    
    Float.sum(float, float)
  - minus
```
public static double minus(double a,
                           double b)
```
    Function associated to the numeric "-" operator.
    
    Parameters:
    
    a - the first operand
    
    b - the second operand
    
    Returns:
    
    Subtraction of arguments
  - times
```
public static double times(double a,
                           double b)
```
    Function associated to the numeric "*" operator.
    
    Parameters:
    
    a - the first operand
    
    b - the second operand
    
    Returns:
    
    Multiplication of arguments
  - divided_by
```
public static double divided_by(double a,
                                double b)
```
    Function associated to the numeric "/" operator.
    
    Parameters:
    
    a - the first operand
    
    b - the second operand
    
    Returns:
    
    Division of arguments
  - mod
```
public static float mod(float a,
                        float b)
```
    Function associated to the math modulo "%" operator.
    
    Parameters:
    
    a - first value
    
    b - second value
    
    Returns:
    
    a mod b, e.g., mod(7, 5) = 2
  - list
```
public static List<Object> list(Environment ignored,
                                Object... args)
```
    Creates a list of values, e.g., for the dashes property.
    
    Parameters:
    
    ignored - The environment (ignored)
    
    args - The values to put in a list
    
    Returns:
    
    list of values
    
    See Also:
    
    Arrays.asList(Object[])
  - count
```
public static Integer count(List<?> lst)
```
    Returns the number of elements in a list.
    
    Parameters:
    
    lst - the list
    
    Returns:
    
    length of the list
  - any
```
public static Object any(Environment ignored,
                         Object... args)
```
    Returns the first non-null object. The name originates from MapCSS standard.
    
    Parameters:
    
    ignored - The environment (ignored)
    
    args - arguments
    
    Returns:
    
    the first non-null object
    
    See Also:
    
    Utils.firstNonNull(Object[])
  - get
```
public static Object get(List<?> lst,
                         float n)
```
    Get the nth element of the list lst (counting starts at 0).
    
    Parameters:
    
    lst - list
    
    n - index
    
    Returns:
    
    nth element of the list, or null if index out of range
    
    Since:
    
    5699
  - split
```
public static List<String> split(String sep,
                                 String toSplit)
```
    Splits string toSplit at occurrences of the separator string sep and returns a list of matches.
    
    Parameters:
    
    sep - separator string
    
    toSplit - string to split
    
    Returns:
    
    list of matches
    
    Since:
    
    5699
    
    See Also:
    
    String.split(String)
  - rgb
```
public static Color rgb(float r,
                        float g,
                        float b)
```
    Creates a color value with the specified amounts of red, green, blue (arguments from 0.0 to 1.0)
    
    Parameters:
    
    r - the red component
    
    g - the green component
    
    b - the blue component
    
    Returns:
    
    color matching the given components
    
    See Also:
    
    Color(float, float, float)
  - rgba
```
public static Color rgba(float r,
                         float g,
                         float b,
                         float alpha)
```
    Creates a color value with the specified amounts of red, green, blue, alpha (arguments from 0.0 to 1.0)
    
    Parameters:
    
    r - the red component
    
    g - the green component
    
    b - the blue component
    
    alpha - the alpha component
    
    Returns:
    
    color matching the given components
    
    See Also:
    
    Color(float, float, float, float)
  - hsb_color
```
public static Color hsb_color(float h,
                              float s,
                              float b)
```
    Create color from hsb color model. (arguments form 0.0 to 1.0)
    
    Parameters:
    
    h - hue
    
    s - saturation
    
    b - brightness
    
    Returns:
    
    the corresponding color
  - html2color
```
public static Color html2color(String html)
```
    Creates a color value from an HTML notation, i.e., #rrggbb.
    
    Parameters:
    
    html - HTML notation
    
    Returns:
    
    color matching the given notation
  - color2html
```
public static String color2html(Color c)
```
    Computes the HTML notation (#rrggbb) for a color value).
    
    Parameters:
    
    c - color
    
    Returns:
    
    HTML notation matching the given color
  - red
```
public static float red(Color c)
```
    Get the value of the red color channel in the rgb color model
    
    Parameters:
    
    c - color
    
    Returns:
    
    the red color channel in the range [0;1]
    
    See Also:
    
    Color.getRed()
  - green
```
public static float green(Color c)
```
    Get the value of the green color channel in the rgb color model
    
    Parameters:
    
    c - color
    
    Returns:
    
    the green color channel in the range [0;1]
    
    See Also:
    
    Color.getGreen()
  - blue
```
public static float blue(Color c)
```
    Get the value of the blue color channel in the rgb color model
    
    Parameters:
    
    c - color
    
    Returns:
    
    the blue color channel in the range [0;1]
    
    See Also:
    
    Color.getBlue()
  - alpha
```
public static float alpha(Color c)
```
    Get the value of the alpha channel in the rgba color model
    
    Parameters:
    
    c - color
    
    Returns:
    
    the alpha channel in the range [0;1]
    
    See Also:
    
    Color.getAlpha()
  - concat
```
public static String concat(Environment ignored,
                            Object... args)
```
    Assembles the strings to one.
    
    Parameters:
    
    ignored - The environment (ignored)
    
    args - arguments
    
    Returns:
    
    assembled string
    
    See Also:
    
    Collectors.joining()
  - join
```
public static String join(Environment ignored,
                          String... args)
```
    Assembles the strings to one, where the first entry is used as separator.
    
    Parameters:
    
    ignored - The environment (ignored)
    
    args - arguments. First one is used as separator
    
    Returns:
    
    assembled string
    
    See Also:
    
    String.join(CharSequence, CharSequence...)
  - join_list
```
public static String join_list(String separator,
                               List<String> values)
```
    Joins a list of values into a single string with fields separated by separator.
    
    Parameters:
    
    separator - the separator
    
    values - collection of objects
    
    Returns:
    
    assembled string
    
    See Also:
    
    String.join(CharSequence, Iterable)
  - prop
```
public static Object prop(Environment env,
                          String key)
```
    Returns the value of the property key, e.g., prop("width").
    
    Parameters:
    
    env - the environment
    
    key - the property key
    
    Returns:
    
    the property value
  - prop
```
public static Object prop(Environment env,
                          String key,
                          String layer)
```
    Returns the value of the property key from layer layer.
    
    Parameters:
    
    env - the environment
    
    key - the property key
    
    layer - layer
    
    Returns:
    
    the property value
  - is_prop_set
```
public static Boolean is_prop_set(Environment env,
                                  String key)
```
    Determines whether property key is set.
    
    Parameters:
    
    env - the environment
    
    key - the property key
    
    Returns:
    
    true if the property is set, false otherwise
  - is_prop_set
```
public static Boolean is_prop_set(Environment env,
                                  String key,
                                  String layer)
```
    Determines whether property key is set on layer layer.
    
    Parameters:
    
    env - the environment
    
    key - the property key
    
    layer - layer
    
    Returns:
    
    true if the property is set, false otherwise
  - tag
```
public static String tag(Environment env,
                         String key)
```
    Gets the value of the key key from the object in question.
    
    Parameters:
    
    env - the environment
    
    key - the OSM key
    
    Returns:
    
    the value for given key
  - tag_regex
```
public static List<String> tag_regex(Environment env,
                                     String keyRegex)
```
    Get keys that follow a regex
    
    Parameters:
    
    env - the environment
    
    keyRegex - the pattern that the key must match
    
    Returns:
    
    the values for the keys that match the pattern
    
    Since:
    
    15315
    
    See Also:
    
    tag_regex(Environment, String, String)
  - tag_regex
```
public static List<String> tag_regex(Environment env,
                                     String keyRegex,
                                     String flags)
```
    Get keys that follow a regex
    
    Parameters:
    
    env - the environment
    
    keyRegex - the pattern that the key must match
    
    flags - a string that may contain "i" (case insensitive), "m" (multiline) and "s" ("dot all")
    
    Returns:
    
    the values for the keys that match the pattern
    
    Since:
    
    15315
    
    See Also:
    
    Pattern.CASE_INSENSITIVE, Pattern.DOTALL, Pattern.MULTILINE
  - parse_regex_flags
```
private static int parse_regex_flags(String flags)
```
    Parse flags for regex usage. Shouldn't be used in mapcss
    
    Parameters:
    
    flags - a string that may contain "i" (case insensitive), "m" (multiline) and "s" ("dot all")
    
    Returns:
    
    An int that can be used by a Pattern object
    
    See Also:
    
    Pattern.CASE_INSENSITIVE, Pattern.DOTALL, Pattern.MULTILINE
  - parent_tag
```
public static String parent_tag(Environment env,
                                String key)
```
    Gets the first non-null value of the key key from the object's parent(s).
    
    Parameters:
    
    env - the environment
    
    key - the OSM key
    
    Returns:
    
    first non-null value of the key key from the object's parent(s)
  - parent_tags
```
public static List<String> parent_tags(Environment env,
                                       String key)
```
    Gets a list of all non-null values of the key key from the object's parent(s). The values are sorted according to AlphanumComparator.
    
    Parameters:
    
    env - the environment
    
    key - the OSM key
    
    Returns:
    
    a list of non-null values of the key key from the object's parent(s)
  - parent_way_angle
```
public static Double parent_way_angle(Environment env)
```
    Get the rotation angle of the preceding parent way segment at the node location. If there is no preceding parent way segment, the following way segment is used instead. Requires a parent way object matched via child selector.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the rotation angle of the parent way segment at the node in radians, otherwise null if there is no matching parent way or the object is not a node
    
    Since:
    
    18664
  - child_tag
```
public static String child_tag(Environment env,
                               String key)
```
    Gets the value of the key key from the object's child.
    
    Parameters:
    
    env - the environment
    
    key - the OSM key
    
    Returns:
    
    the value of the key key from the object's child, or null if there is no child
  - parent_osm_id
```
public static Long parent_osm_id(Environment env)
```
    Returns the OSM id of the object's parent.
    Parent must be matched by child selector.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the OSM id of the object's parent, if available, or null
    
    See Also:
    
    PrimitiveId.getUniqueId()
  - gpx_distance
```
public static double gpx_distance(Environment env)
```
    Returns the lowest distance between the OSM object and a GPX point
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the distance between the object and the closest gpx point or Double.MAX_VALUE
    
    Since:
    
    14802
  - has_tag_key
```
public static boolean has_tag_key(Environment env,
                                  String key)
```
    Determines whether the object has a tag with the given key.
    
    Parameters:
    
    env - the environment
    
    key - the OSM key
    
    Returns:
    
    true if the object has a tag with the given key, false otherwise
  - index
```
public static Float index(Environment env)
```
    Returns the index of node in parent way or member in parent relation.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the index as float. Starts at 1
  - sort
```
public static List<String> sort(Environment ignored,
                                String... sortables)
```
    Sort an array of strings
    
    Parameters:
    
    ignored - The environment (ignored)
    
    sortables - The array to sort
    
    Returns:
    
    The sorted list
    
    Since:
    
    15279
  - sort_list
```
public static List<String> sort_list(List<String> sortables)
```
    Sort a list of strings
    
    Parameters:
    
    sortables - The list to sort
    
    Returns:
    
    The sorted list
    
    Since:
    
    15279
  - uniq
```
public static List<String> uniq(Environment ignored,
                                String... values)
```
    Get unique values
    
    Parameters:
    
    ignored - The environment (ignored)
    
    values - A list of values that may have duplicates
    
    Returns:
    
    A list with no duplicates
    
    Since:
    
    15323
  - uniq_list
```
public static List<String> uniq_list(List<String> values)
```
    Get unique values
    
    Parameters:
    
    values - A list of values that may have duplicates
    
    Returns:
    
    A list with no duplicates
    
    Since:
    
    15323
  - role
```
public static String role(Environment env)
```
    Returns the role of current object in parent relation, or role of child if current object is a relation.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    role of current object in parent relation, or role of child if current object is a relation
    
    See Also:
    
    Environment.getRole()
  - count_roles
```
public static int count_roles(Environment env,
                              String... roles)
```
    Returns the number of primitives in a relation with the specified roles.
    
    Parameters:
    
    env - the environment
    
    roles - The roles to count in the relation
    
    Returns:
    
    The number of relation members with the specified role
    
    Since:
    
    15196
  - areasize
```
public static Float areasize(Environment env)
```
    Returns the area of a closed way or multipolygon in square meters or null.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the area of a closed way or multipolygon in square meters or null
    
    See Also:
    
    Geometry.computeArea(IPrimitive)
  - waylength
```
public static Float waylength(Environment env)
```
    Returns the length of the way in metres or null.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the length of the way in metres or null.
    
    See Also:
    
    Way.getLength()
  - not
```
public static boolean not(boolean b)
```
    Function associated to the logical "!" operator.
    
    Parameters:
    
    b - boolean value
    
    Returns:
    
    true if !b
  - greater_equal
```
public static boolean greater_equal(float a,
                                    float b)
```
    Function associated to the logical ">=" operator.
    
    Parameters:
    
    a - first value
    
    b - second value
    
    Returns:
    
    true if a >= b
  - less_equal
```
public static boolean less_equal(float a,
                                 float b)
```
    Function associated to the logical "<=" operator.
    
    Parameters:
    
    a - first value
    
    b - second value
    
    Returns:
    
    true if a <= b
  - greater
```
public static boolean greater(float a,
                              float b)
```
    Function associated to the logical ">" operator.
    
    Parameters:
    
    a - first value
    
    b - second value
    
    Returns:
    
    true if a > b
  - less
```
public static boolean less(float a,
                           float b)
```
    Function associated to the logical "<" operator.
    
    Parameters:
    
    a - first value
    
    b - second value
    
    Returns:
    
    true if a < b
  - degree_to_radians
```
public static double degree_to_radians(double degree)
```
    Converts an angle in degrees to radians.
    
    Parameters:
    
    degree - the angle in degrees
    
    Returns:
    
    the angle in radians
    
    See Also:
    
    Math.toRadians(double)
  - cardinal_to_radians
```
public static Double cardinal_to_radians(String cardinal)
```
    Converts an angle diven in cardinal directions to radians. The following values are supported: n, north, ne, northeast, e, east, se, southeast, s, south, sw, southwest, w, west, nw, northwest.
    
    Parameters:
    
    cardinal - the angle in cardinal directions.
    
    Returns:
    
    the angle in radians
    
    See Also:
    
    RotationAngle.parseCardinalRotation(String)
  - equal
```
public static boolean equal(Object a,
                            Object b)
```
    Determines if the objects a and b are equal.
    
    Parameters:
    
    a - First object
    
    b - Second object
    
    Returns:
    
    true if objects are equal, false otherwise
    
    See Also:
    
    Object.equals(Object)
  - not_equal
```
public static boolean not_equal(Object a,
                                Object b)
```
    Determines if the objects a and b are not equal.
    
    Parameters:
    
    a - First object
    
    b - Second object
    
    Returns:
    
    false if objects are equal, true otherwise
    
    See Also:
    
    Object.equals(Object)
  - JOSM_search
```
public static Boolean JOSM_search(Environment env,
                                  String searchStr)
```
    Determines whether the JOSM search with searchStr applies to the object.
    
    Parameters:
    
    env - the environment
    
    searchStr - the search string
    
    Returns:
    
    true if the JOSM search with searchStr applies to the object
    
    See Also:
    
    SearchCompiler
  - JOSM_pref
```
public static String JOSM_pref(Environment env,
                               String key,
                               String def)
```
    Obtains the JOSM key Preferences string for key key, and defaults to def if that is null. If the default value can be converted to a Color, the NamedColorProperty is retrieved as string.
    
    Parameters:
    
    env - the environment
    
    key - Key in JOSM preference
    
    def - Default value
    
    Returns:
    
    value for key, or default value if not found
  - regexp_test
```
public static boolean regexp_test(String pattern,
                                  String target)
```
    Tests if string target matches pattern pattern
    
    Parameters:
    
    pattern - The regex expression
    
    target - The character sequence to be matched
    
    Returns:
    
    true if, and only if, the entire region sequence matches the pattern
    
    Since:
    
    5699
    
    See Also:
    
    Pattern.matches(String, CharSequence)
  - regexp_test
```
public static boolean regexp_test(String pattern,
                                  String target,
                                  String flags)
```
    Tests if string target matches pattern pattern
    
    Parameters:
    
    pattern - The regex expression
    
    target - The character sequence to be matched
    
    flags - a string that may contain "i" (case insensitive), "m" (multiline) and "s" ("dot all")
    
    Returns:
    
    true if, and only if, the entire region sequence matches the pattern
    
    Since:
    
    5699
    
    See Also:
    
    Pattern.CASE_INSENSITIVE, Pattern.DOTALL, Pattern.MULTILINE
  - regexp_match
```
public static List<String> regexp_match(String pattern,
                                        String target,
                                        String flags)
```
    Tries to match string against pattern regexp and returns a list of capture groups in case of success. The first element (index 0) is the complete match (i.e. string). Further elements correspond to the bracketed parts of the regular expression.
    
    Parameters:
    
    pattern - The regex expression
    
    target - The character sequence to be matched
    
    flags - a string that may contain "i" (case insensitive), "m" (multiline) and "s" ("dot all")
    
    Returns:
    
    a list of capture groups if Matcher.matches(), or null.
    
    Since:
    
    5701
    
    See Also:
    
    Pattern.CASE_INSENSITIVE, Pattern.DOTALL, Pattern.MULTILINE
  - regexp_match
```
public static List<String> regexp_match(String pattern,
                                        String target)
```
    Tries to match string against pattern regexp and returns a list of capture groups in case of success. The first element (index 0) is the complete match (i.e. string). Further elements correspond to the bracketed parts of the regular expression.
    
    Parameters:
    
    pattern - The regex expression
    
    target - The character sequence to be matched
    
    Returns:
    
    a list of capture groups if Matcher.matches(), or null.
    
    Since:
    
    5701
  - osm_id
```
public static long osm_id(Environment env)
```
    Returns the OSM id of the current object.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the OSM id of the current object
    
    See Also:
    
    PrimitiveId.getUniqueId()
  - osm_user_name
```
public static String osm_user_name(Environment env)
```
    Returns the OSM user name who last touched the current object.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the OSM user name who last touched the current object
    
    Since:
    
    15246
    
    See Also:
    
    IPrimitive.getUser()
  - osm_user_id
```
public static long osm_user_id(Environment env)
```
    Returns the OSM user id who last touched the current object.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the OSM user id who last touched the current object
    
    Since:
    
    15246
    
    See Also:
    
    IPrimitive.getUser()
  - osm_version
```
public static int osm_version(Environment env)
```
    Returns the version number of the current object.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the version number of the current object
    
    Since:
    
    15246
    
    See Also:
    
    IPrimitive.getVersion()
  - osm_changeset_id
```
public static int osm_changeset_id(Environment env)
```
    Returns the id of the changeset the current object was last uploaded to.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the id of the changeset the current object was last uploaded to
    
    Since:
    
    15246
    
    See Also:
    
    IPrimitive.getChangesetId()
  - osm_timestamp
```
public static int osm_timestamp(Environment env)
```
    Returns the time of last modification to the current object, as timestamp.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the time of last modification to the current object, as timestamp
    
    Since:
    
    15246
    
    See Also:
    
    IPrimitive.getRawTimestamp()
  - tr
```
public static String tr(Environment ignored,
                        String... args)
```
    Translates some text for the current locale. The first argument is the text to translate, and the subsequent arguments are parameters for the string indicated by {0}, {1}, …
    
    Parameters:
    
    ignored - The environment (ignored)
    
    args - arguments
    
    Returns:
    
    the translated string
  - substring
```
public static String substring(String s,
                               float begin)
```
    Returns the substring of s starting at index begin (inclusive, 0-indexed).
    
    Parameters:
    
    s - The base string
    
    begin - The start index
    
    Returns:
    
    the substring
    
    See Also:
    
    String.substring(int)
  - substring
```
public static String substring(String s,
                               float begin,
                               float end)
```
    Returns the substring of s starting at index begin (inclusive) and ending at index end, (exclusive, 0-indexed).
    
    Parameters:
    
    s - The base string
    
    begin - The start index
    
    end - The end index
    
    Returns:
    
    the substring
    
    See Also:
    
    String.substring(int, int)
  - replace
```
public static String replace(String s,
                             String target,
                             String replacement)
```
    Replaces in s every target} substring by replacement.
    
    Parameters:
    
    s - The source string
    
    target - The sequence of char values to be replaced
    
    replacement - The replacement sequence of char values
    
    Returns:
    
    The resulting string
    
    See Also:
    
    String.replace(CharSequence, CharSequence)
  - upper
```
public static String upper(String s)
```
    Converts string s to uppercase.
    
    Parameters:
    
    s - The source string
    
    Returns:
    
    The resulting string
    
    Since:
    
    11756
    
    See Also:
    
    String.toUpperCase(Locale)
  - lower
```
public static String lower(String s)
```
    Converts string s to lowercase.
    
    Parameters:
    
    s - The source string
    
    Returns:
    
    The resulting string
    
    Since:
    
    11756
    
    See Also:
    
    String.toLowerCase(Locale)
  - title
```
public static String title(String str)
```
    Returns a title-cased version of the string where words start with an uppercase character and the remaining characters are lowercase Also known as "capitalize".
    
    Parameters:
    
    str - The source string
    
    Returns:
    
    The resulting string
    
    Since:
    
    17613
    
    See Also:
    
    Character.toTitleCase(char)
  - trim
```
public static String trim(String s)
```
    Trim whitespaces from the string s.
    
    Parameters:
    
    s - The source string
    
    Returns:
    
    The resulting string
    
    Since:
    
    11756
    
    See Also:
    
    Utils.strip(java.lang.String)
  - trim_list
```
public static List<String> trim_list(List<String> strings)
```
    Trim whitespaces from the strings strings.
    
    Parameters:
    
    strings - The list of strings to strip
    
    Returns:
    
    The resulting string
    
    Since:
    
    15591
    
    See Also:
    
    Utils.strip(java.lang.String)
  - is_similar
```
public static boolean is_similar(String string1,
                                 String string2)
```
    Check if two strings are similar, but not identical, i.e., have a Levenshtein distance of 1 or 2.
    
    Parameters:
    
    string1 - first string to compare
    
    string2 - second string to compare
    
    Returns:
    
    true if the normalized strings are different but only a "little bit"
    
    Since:
    
    14371
    
    See Also:
    
    Utils.isSimilar(java.lang.String, java.lang.String)
  - URL_decode
```
public static String URL_decode(String s)
```
    Percent-decode a string. (See https://en.wikipedia.org/wiki/Percent-encoding) This is especially useful for wikipedia titles
    
    Parameters:
    
    s - url-encoded string
    
    Returns:
    
    the decoded string, or original in case of an error
    
    Since:
    
    11756
  - URL_encode
```
public static String URL_encode(String s)
```
    Percent-encode a string. (See https://en.wikipedia.org/wiki/Percent-encoding) This is especially useful for data urls, e.g. concat("data:image/svg+xml,", URL_encode("<svg>...</svg>"));
    
    Parameters:
    
    s - arbitrary string
    
    Returns:
    
    the encoded string
  - XML_encode
```
public static String XML_encode(String s)
```
    XML-encode a string. Escapes special characters in xml. Alternative to using <![CDATA[ ... ]]> blocks.
    
    Parameters:
    
    s - arbitrary string
    
    Returns:
    
    the encoded string
  - CRC32_checksum
```
public static long CRC32_checksum(String s)
```
    Calculates the CRC32 checksum from a string (based on RFC 1952).
    
    Parameters:
    
    s - the string
    
    Returns:
    
    long value from 0 to 2^32-1
  - is_right_hand_traffic
```
public static boolean is_right_hand_traffic(Environment env)
```
    check if there is right-hand traffic at the current location
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    true if there is right-hand traffic
    
    Since:
    
    7193
  - is_clockwise
```
public static boolean is_clockwise(Environment env)
```
    Determines whether the way is closed and oriented clockwise, or non-closed and the 1st, 2nd and last node are in clockwise order.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    true if the way is closed and oriented clockwise
  - is_anticlockwise
```
public static boolean is_anticlockwise(Environment env)
```
    Determines whether the way is closed and oriented anticlockwise, or non-closed and the 1st, 2nd and last node are in anticlockwise order.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    true if the way is closed and oriented clockwise
  - print
```
public static Object print(Object o)
```
    Prints the object to the command line (for debugging purpose).
    
    Parameters:
    
    o - the object
    
    Returns:
    
    the same object, unchanged
  - println
```
public static Object println(Object o)
```
    Prints the object to the command line, with new line at the end (for debugging purpose).
    
    Parameters:
    
    o - the object
    
    Returns:
    
    the same object, unchanged
  - number_of_tags
```
public static int number_of_tags(Environment env)
```
    Get the number of tags for the current primitive.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    number of tags
  - setting
```
public static Object setting(Environment env,
                             String key)
```
    Get value of a setting.
    
    Parameters:
    
    env - the environment
    
    key - setting key (given as layer identifier, e.g. setting::mykey {...})
    
    Returns:
    
    the value of the setting (calculated when the style is loaded)
  - center
```
public static LatLon center(Environment env)
```
    Returns the center of the environment OSM primitive.
    
    Parameters:
    
    env - the environment
    
    Returns:
    
    the center of the environment OSM primitive
    
    Since:
    
    11247
  - inside
```
public static boolean inside(Environment env,
                             String codes)
```
    Determines if the object is inside territories matching given ISO3166 codes.
    
    Parameters:
    
    env - the environment
    
    codes - comma-separated list of ISO3166-1-alpha2 or ISO3166-2 country/subdivision codes
    
    Returns:
    
    true if the object is inside territory matching given ISO3166 codes
    
    Since:
    
    11247
  - outside
```
public static boolean outside(Environment env,
                              String codes)
```
    Determines if the object is outside territories matching given ISO3166 codes.
    
    Parameters:
    
    env - the environment
    
    codes - comma-separated list of ISO3166-1-alpha2 or ISO3166-2 country/subdivision codes
    
    Returns:
    
    true if the object is outside territory matching given ISO3166 codes
    
    Since:
    
    11247
  - at
```
public static boolean at(Environment env,
                         double lat,
                         double lon)
```
    Determines if the object centroid lies at given lat/lon coordinates.
    
    Parameters:
    
    env - the environment
    
    lat - latitude, i.e., the north-south position in degrees
    
    lon - longitude, i.e., the east-west position in degrees
    
    Returns:
    
    true if the object centroid lies at given lat/lon coordinates
    
    Since:
    
    12514
  - to_boolean
```
public static boolean to_boolean(String value)
```
    Parses the string argument as a boolean.
    
    Parameters:
    
    value - the String containing the boolean representation to be parsed
    
    Returns:
    
    the boolean represented by the string argument
    
    Since:
    
    16110
    
    See Also:
    
    Boolean.parseBoolean(java.lang.String)
  - to_byte
```
public static byte to_byte(String value)
```
    Parses the string argument as a byte.
    
    Parameters:
    
    value - the String containing the byte representation to be parsed
    
    Returns:
    
    the byte represented by the string argument
    
    Since:
    
    16110
    
    See Also:
    
    Byte.parseByte(java.lang.String, int)
  - to_short
```
public static short to_short(String value)
```
    Parses the string argument as a short.
    
    Parameters:
    
    value - the String containing the short representation to be parsed
    
    Returns:
    
    the short represented by the string argument
    
    Since:
    
    16110
    
    See Also:
    
    Short.parseShort(java.lang.String, int)
  - to_int
```
public static int to_int(String value)
```
    Parses the string argument as an int.
    
    Parameters:
    
    value - the String containing the int representation to be parsed
    
    Returns:
    
    the int represented by the string argument
    
    Since:
    
    16110
    
    See Also:
    
    Integer.parseInt(java.lang.String, int)
  - to_long
```
public static long to_long(String value)
```
    Parses the string argument as a long.
    
    Parameters:
    
    value - the String containing the long representation to be parsed
    
    Returns:
    
    the long represented by the string argument
    
    Since:
    
    16110
    
    See Also:
    
    Long.parseLong(java.lang.String, int)
  - to_float
```
public static float to_float(String value)
```
    Parses the string argument as a float.
    
    Parameters:
    
    value - the String containing the float representation to be parsed
    
    Returns:
    
    the float represented by the string argument
    
    Since:
    
    16110
    
    See Also:
    
    Float.parseFloat(java.lang.String)
  - to_double
```
public static double to_double(String value)
```
    Parses the string argument as a double.
    
    Parameters:
    
    value - the String containing the double representation to be parsed
    
    Returns:
    
    the double represented by the string argument
    
    Since:
    
    16110
    
    See Also:
    
    Double.parseDouble(java.lang.String)

Class Functions

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Functions

Method Detail

eval

plus

minus

times

divided_by

mod

list

count

any

get

split

rgb

rgba

hsb_color

html2color

color2html

red

green

blue

alpha

concat

join

join_list

prop

prop

is_prop_set

is_prop_set

tag

tag_regex

tag_regex

parse_regex_flags

parent_tag

parent_tags

parent_way_angle

child_tag

parent_osm_id

gpx_distance

has_tag_key

index

sort

sort_list

uniq

uniq_list

role

count_roles

areasize

waylength

not

greater_equal

less_equal

greater

less

degree_to_radians

cardinal_to_radians

equal

not_equal

JOSM_search

JOSM_pref

regexp_test

regexp_test

regexp_match

regexp_match

osm_id

osm_user_name

osm_user_id

osm_version

osm_changeset_id

osm_timestamp

tr

substring

substring

replace

upper