Modulo:Wd

Dokumentasion ti modulo

[kitaen] [urnosen] [pakasaritaan] [purgaen]

Para iti modulo a nasen koma a mausar kadagiti plantilia ti infobox imbes nga iti daytoy a modulo, kitaen ti Modulo:WikidataIB.

Naikeddeng daytoy a modulo nga agala kadagiti datos manipud iti Wikidata nga addaan wenno awanan iti maysa a silpo a maikapetto iti artikulo ti Wikipedia ken adda pay dagiti adu a langa.

Usage

{{#invoke:wd |command1|flag1a|flag1b|flag1c |command2|flag2a|flag2b|flag2c |flag0a|flag0b|flag0c |arg1|arg2|arg3}}

Commands

The commands (command1, command2, ...) determine what kind of values are returned. One call can only contain commands from a single class, except that the main class is always used together with one other class.

Claim class

The claim class commands can be combined, meaning that multiple commands of different types from this class can be given at one time.

Combine multiple commands into one call to this modulo, instead of making multiple calls to this modulo with one command each, to be sure that all the returned pieces of information belong to each other.

Type	Command	Returns	Basic usage	Description
I	property	first match	{{#invoke:wd|property|P1}}	Returns the requested property – or list of properties – from the current item-entity or from a given entity.
	properties	all matches	{{#invoke:wd|properties|P1}}
II	qualifier	first match	{{#invoke:wd|qualifier|P1|P2}}	Returns the requested qualifier – or list of qualifiers – from the given property of the current item-entity or of a given entity. Unlike the other claim class commands, this command can be given multiple times to retrieve different qualifiers in one call.
	qualifiers	all matches	{{#invoke:wd|qualifiers|P1|P2}}
III	reference	first match	{{#invoke:wd|reference|P1}}	Returns a reference – or list of references – from the given property of the current item-entity or of a given entity.
	references	all matches	{{#invoke:wd|references|P1}}

General class

The general class commands cannot be combined.

Type	Command	Returns	Basic usage	Description
I	label		{{#invoke:wd|label}}	Returns the label of the current item-entity or of a given entity if present.
II	title		{{#invoke:wd|title}}	Returns the title of the page linked to the current item-entity or to a given item-entity if such page exists.
III	description		{{#invoke:wd|description}}	Returns the description of the current item-entity or of a given entity if present.
IV	alias	first match	{{#invoke:wd|alias}}	Returns an alias – or list of aliases – of the current item-entity or of a given entity if present.
	aliases	all matches	{{#invoke:wd|aliases}}
V	badge	first match	{{#invoke:wd|badge}}	Returns a badge – or list of badges – for the page linked to the current item-entity or to a given item-entity if such page exists.
	badges	all matches	{{#invoke:wd|badges}}

Main class

Command	Basic usage	Description
main	{{#invoke:wd|main|command|P1}}	Intended for use by wrapper templates (around this module) to invoke one or more of the above commands, returning their respective output. The parameters passed to the wrapper template are the ones that will be used by the module, e.g. {{wikidata|property|P1549}} → {{#invoke:Wd|main}} → {{#invoke:Wd|main|property|P1549}}. Therefore, any parameters set by the wrapper template itself will be discarded, e.g. {{wikidata|property|P1549}} → {{#invoke:Wd|main|qualifier|P1082|P585}} → {{#invoke:Wd|main|property|P1549}}.

Flags

The following (optional) flags are available which can be used to alter this modulo's behaviour. They must be given after the (first) command and before the other arguments. For convenience, empty flags (i.e. ||) are allowed and will simply be ignored.

Command flags

These flags (flag1*, flag2*, ...) apply to the command that precedes them directly.

Flag	Description
linked	Creates a link to the Wikipedia article that is connected to the property or qualifier if it exists. Also links units of measurement that may be appended to values. If this parameter is omitted, then the plain property or qualifier value will be returned.
short	[EXPENSIVE] Returns the (P1813) of any entity returned if they have one attached. If that is not the case, then the default behaviour of returning the entity's label will occur.
raw	Returns the raw value if applicable. If this flag is used with item or property datatypes, then this will return the Q-identifier or P-identifier. For quantity datatypes, this flag will strip off any units of measurement, unless the unit flag is also given in which case the raw unit of measurement (its Q-identifier) will be returned. If this flag is used with time datatypes, then the returned date will be in the format of yyyy-mm-dd (e.g. 1731-02-11), or yyyy-mm, or yyyy depending on the date's precision. Dates in the Julian calendar stored with a precision of days through millenniums will have /Julian attached to the output (e.g. 1731-02-11/Julian, which may be split off using the {{#titleparts}} template function). If it is used with globe coordinate datatypes, then it replaces the various symbols with forward slashes in the returned value (e.g. 52/5/3/N/4/19/3/E, which may be split into parts using the {{#titleparts}} template function).
multilanguage	Returns monolingual text values in any available language, not just the current wiki's language.
unit	Returns only the unit of measurement for quantity datatypes.

Configuration flags

These flags (flag0*) are general configuration flags and can be given anywhere after the first command (but before the other arguments).

	Flag	Command class	Description
Combination of:	preferred	claim	Sets a rank constraint for the selected claim(s). The first three set the ranks for which claim(s) will be selected. They can optionally be followed by a + or a -, e.g. normal+ or preferred-, where the first selects claims with a 'normal' rank or higher and the second selects claims with a 'preferred' rank or lower. To get claims of all ranks, use preferred- or deprecated+. If the best flag is given additionally, then only the claims that have the highest rank amongst the selected claims will be returned. The default is normal+|best (so by default claims with a 'deprecated' rank are never returned). Output is always sorted from highest rank to lowest (regardless of any of these flags being set).
	normal
	deprecated
	best
Combination of:	future	claim	Sets a time constraint for the selected claim(s). Uses the claims' qualifiers of (P580) and (P582) to determine if the claim is valid for the selected time period(s). The default is future|current|former (so by default claims that are valid for any time period are returned).
	current
	former
	mdy	claim	Returns date values in month-day-year order instead of day-month-year order.
	single	claim	Returns only a single claim instead of multiple (if multiple claims match). Has no effect if the property/properties command is given, in which case this flag would be redundant.
	sourced	claim	Only returns claims that have at least one valid reference.
One of:	edit	claim, general	Adds a clickable icon after the output that may be used by readers to edit the returned claim on Wikidata. If edit@end is used, then the icon will be placed at the end of the line for neat alignment in infoboxes.
	edit@end

Arguments

The arguments determine the sources from which all the returned values are fetched.

Positional arguments

The following table shows the available positional arguments (arg*) in their fixed order. For each command, the applicable set of arguments is marked. If multiple commands are given, then the applicable set is the union of the individual sets. For instance, if the commands properties and qualifiers have been given, then at least both the arguments property_id and qualifier_id should be given as well.

More than one qualifier/qualifiers command can be given. The order in which these commands with their flags are given matches the order in which the respective qualifier_id arguments are given.

	(required)		(optional)	(optional)	(required)	(optional)	(required)	(required)
{{#invoke:wd	commands		flags	entity_id	property_id	raw_value	qualifier_id	qualifier_id	}}
				label, title, description, alias/aliases, badge/badges
				property/properties
				reference/references
				qualifier/qualifiers
				qualifier/qualifiers (optional 2nd, 3rd, etc.)

Below follows a description of all positional arguments.

Argument	Description
entity_id (optional)	[EXPENSIVE] Q-identifier of the item-entity to be accessed (e.g. Q55), or P-identifier (or an available alias) of the property-entity to be accessed preceded by the Property: prefix (e.g. Property:P38). In case of the general class commands, the Property: prefix may be omitted for P-identifiers (e.g. P38). If this parameter is omitted, then the item-entity connected to the current page will be used (except when eid= is given, see below). If this parameter is given, but empty (i.e. ||), then due to its position it will be interpreted as an empty flag and thus be ignored, giving the same result as if it were omitted. See also the eid= named argument below that can be used to give an entity-ID too, but without the item-entity connected to the current page being used as a result in this specific case.
property_id	P-identifier (or an available alias) of the property within the entity to be accessed, without the Property: prefix (e.g. P35).
raw_value (optional)	Either the Q-identifier equal to the property value (e.g. Q29574) or a literal value (i.e. string or quantity etc., no entity label) equal to the raw property value of the particular claim to be accessed. Dates as literal values must be formatted yyyy-mm-dd (e.g. 1731-02-11) for dates with a precision of days, yyyy-mm (e.g. 1731-02) for dates with a precision of months, and yyyy (e.g. 1731) for dates of lesser precision. Dates BCE require a minus sign in front of the year (e.g. -2950-01-31). Dates stored in the Julian calendar must have /Julian attached to the end (e.g. 1731-02-11/Julian). Decades like the 2010s must be given as 2010 (but the 2010s BCE as -2019), centuries like the 20th century as 1901 (but the 20th century BCE as -2000), and millenniums like the 3rd millennium as 2001 (but the 3rd millennium BCE as -3000). Globe coordinates as literal values must be formatted with forward slashes (i.e. /) between the parts and no symbols (e.g. 52/5/3/N/4/19/3/E) without any spaces or leading zeros. The special type 'no value' can be given by entering the empty string (i.e. ||) and the special type 'unknown value' can be given by entering a single underscore (i.e. |_|). To get a literal underscore, escape it by placing a backslash \ directly in front of it (i.e. \_); the same holds for a literal backslash (i.e. \\). To get a literal vertical bar |, use {{!}} or |. If this parameter is omitted, then all claims (matching any other constraints) within the property will be accessed.
qualifier_id	P-identifier (or an available alias) of the qualifier within the entity to be accessed, without the Property: prefix (e.g. P580).

Named arguments

Below follows a description of all named arguments, which are name-value pairs (i.e. |name=value). These are all optional and can be given anywhere after the first command.

Argument	Description
eid=	[EXPENSIVE] This argument offers the same functionality as the positional argument entity_id (e.g. |eid=Q55), with one difference: if the argument is given but its value is left empty (i.e. |eid=), then no entity is accessed at all instead of the item-entity connected to the current page. This is useful in some cases where a variable entity-ID is expected, but where the item-entity connected to the current page should not be accessed as the default. Also, the Property: prefix may be omitted for P-identifiers (e.g. |eid=P38) for all commands. This argument only has effect if the positional argument entity_id is omitted.
<qualifier>=	The <qualifier> is a placeholder for a set of arguments that determine which claims should be accessed based on qualifier value, analogous to the pair of positional arguments property_id and raw_value that determine access based on property value. As such, <qualifier> is any qualifier's P-identifier (or an available alias) without the Property: prefix (e.g. P518). Its value is either the Q-identifier equal to one of the qualifier values (e.g. Q27561) or a literal value (i.e. string or quantity etc., no entity label) equal to one of the raw qualifier values of the particular claim to be accessed. The value format is the same as for the positional argument raw_value. The special type 'no value' given by the empty string also matches the total absence within the claim of the particular qualifier. Example: |P518=Q27561 Multiple arguments of this type can be given to match multiple qualifier values simultaneously for each claim.

Property aliases

Property aliases are other names for P-identifiers that can be used instead. The following property aliases (which are case-sensitive) are currently available:

Alias	translates to	P-identifier
coord	→	P625
image	→	P18
author	→	P50
publisher	→	P123
importedFrom	→	P143
statedIn	→	P248
pages	→	P304
language	→	P407
publicationDate	→	P577
startTime	→	P580
endTime	→	P582
chapter	→	P792
retrieved	→	P813
referenceURL	→	P854
sectionVerseOrParagraph	→	P958
archiveURL	→	P1065
title	→	P1476
formatterURL	→	P1630
quote	→	P1683
shortName	→	P1813
archiveDate	→	P2960
inferredFrom	→	P3452
typeOfReference	→	P3865
column	→	P3903

Advanced usage

The layout of the output from (a combination of) commands that have both a singular and a plural form (e.g. property/properties) can be customized by using a number of named flags, which are name-value pairs (i.e. |flag=value), that can be given anywhere after the first command. The table below shows the available named flags.

To insert a space at the beginning or end of a value, use an underscore _. To get a literal underscore, escape it by placing a backslash \ directly in front of it (i.e. \_); the same holds for a literal backslash (i.e. \\). To get a literal vertical bar |, use {{!}} or |.

Named flag	Default value	Default condition	Description
format=	%p[%s][%r]	if the property/properties command was given and the qualifier/qualifiers command was not given	The format of a single claim. The available parameters are as follows. Parameter Description %p The claim's property value applied by the property/properties command. %q1, %q2, %q3, ... The claim's qualifier value or list of qualifier values applied by the corresponding qualifier/qualifiers command. %q The collection of the qualifier values applied by each qualifier/qualifiers command (i.e. %q1 + %q2 + %q3 + ...). If only one qualifier/qualifiers command was given, then this parameter is equivalent to %q1. %r The claim's reference value or list of reference values applied by the reference/references command. %a The entity's alias applied by the alias/aliases command. %b The entity's page badge applied by the badge/badges command. %s The movable separator placeholder. This is a special parameter that is not applied by a command, but instead is filled automatically between each pair of claims (if a list of claims is returned). This is handy in case a reference is returned as well, since it allows the reference to be placed after the punctuation mark as prescribed by Wikipedia's manual of style. The default value is a comma (,) and can be overridden with the sep%s flag (see below). Optional parameters can be given by encapsulating them between square brackets: [...]. All content between the square brackets is only displayed if a value for each optional parameter that has been defined between the same brackets has been found. Optional content can also be nested. To use two opening square brackets that directly follow each other (i.e. [[), use {{!((}}. At least one parameter must be given that is not optional, while the %s parameter must always be defined as optional. To get a literal [, ], % or \, escape the character by placing a backslash \ directly in front of it (e.g. \%). See also the description directly above this table for more.
	%q[%s][%r]	if the property/properties command was not given and the qualifier/qualifiers command was given
	%r	if only the reference/references command was given
	%p[ <span style="font-size:85\%">(%q)</span>][%s][%r]	if the property/properties command was given and the qualifier/qualifiers command was given
	%a[%s]	if the alias/aliases command was given
	%b[%s]	if the badge/badges command was given
sep=	_	default	The fixed separator between each pair of claims.
		if only the reference/references command was given without the raw flag
sep%s=	,	default	The movable separator between each pair of claims. This will be the value of the %s parameter applied to all claims except for the last in the list.
	;	if the property/properties command was not given and the qualifier/qualifiers command was given
sep%q1=, sep%q2=, sep%q3=, ...	,_	default	The separator between each pair of qualifiers of a single claim. These are the value separators for the %q1, %q2, %q3, ... parameters. If only one qualifier/qualifiers command was given, then the sep%q1 flag is equivalent to sep%q.
sep%q=	,_	if exactly one qualifier/qualifiers command was given	The separator between each set of qualifiers of a single claim. This is the value separator for the %q parameter. If only one qualifier/qualifiers command was given, then this flag is equivalent to sep%q1.
	;_	if more than one qualifier/qualifiers command was given
sep%r=		default	The separator between each pair of references of a single claim. This is the value separator for the %r parameter.
	_	if the raw flag was given for the reference/references command
punc=		default	A punctuation mark placed at the end of the output. This will be placed on the %s parameter applied to the last claim in the list. This allows any references to be placed after the punctuation mark when the output is used as part of a sentence.

Examples

Parameters and output types	Example	Description
Q55 = "Neerlandia", P395 = "P395" ↓ [string]	{{#invoke:wd|property|Q55|P395}} ↓ NL	Gets a literal string value.
P395 = "P395" ↓ [string]	{{#invoke:wd|property|P395}} ↓ NL	If the modulo is transcluded on the Olanda page (which is linked to Q55), then the Q55 can be omitted.
Q55 = "Neerlandia", P395 = "NL" ↓ [string]	{{#invoke:wd|property|eid=Q55|P395}} ↓	An entity-ID can also be given using the eid= argument.
Q55 = "Neerlandia", P395 = "P395" ↓ [string]	{{#invoke:wd|property|edit|Q55|P395}} ↓	Adds a clickable icon that may be used to edit the returned value on Wikidata.
Q55 = "Neerlandia", P395 = "P395" ↓ [string]	{{#invoke:wd|property|edit@end|Q55|P395}} ↓	Places the edit icon at the end of the line.
Q55 = "Neerlandia", P1082 = "populasion" ↓ [quantity]	{{#invoke:wd|property|normal+|Q55|P1082}} ↓	Gets a single property value from claims with a 'normal' rank or higher.
Q55 = "Neerlandia", P1082 = "populasion" ↓ [quantity]	{{#invoke:wd|properties|normal+|Q55|P1082}} ↓	Gets multiple property values from claims with a 'normal' rank or higher.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [quantity], [time]	{{#invoke:wd|properties|qualifier|normal+|Q55|P1082|P585}} ↓	Gets a single qualifier value for each claim, additional to the property value.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [quantity], [time], [reference]	{{#invoke:wd|properties|qualifier|references|normal+|Q55|P1082|P585}} ↓	Gets references for each claim.
Q55 = "Neerlandia", P1082 = "populasion" ↓ [quantity], [reference]	A total of {{#invoke:wd|property|references|Q55|P1082}} people live in the Netherlands. ↓ A total of people live in the Netherlands.	Gets a property with its references.
Q55 = "Neerlandia", P1082 = "populasion" ↓ [quantity], [reference]	The Netherlands has a population of {{#invoke:wd|property|references|Q55|P1082|punc=.}} ↓ The Netherlands has a population of	Adds a punctuation mark at the end of the output, in front of the references.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [quantity], [time], [reference]	<ul>{{#invoke:wd|properties|qualifier|references|normal+|Q55|P1082|P585|format=<li>%p[%r][<ul><li>%q</li></ul>]</li>}}</ul> ↓	Returns the output in a custom format.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [time]	{{#invoke:wd|qualifier|normal+|Q55|P1082|P585}} ↓ 1 Enero 2024; 1 Enero 2022; 1 Enero 2020; 1 Enero 2019; 1 Enero 2018; 1 Enero 2017; 21 Marso 2016; 26 Agosto 2014; 2013; 1950	Gets a single qualifier per claim, by default for multiple matching claims.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [time]	{{#invoke:wd|qualifier|normal+|single|Q55|P1082|P585}} ↓ 1 Enero 2024	To get a single qualifier for only a single claim, give the single flag too so that only a single claim will be accessed.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [time]	{{#invoke:wd|qualifier|Q55|P1082|17590672|P585}} ↓ 1 Enero 2022	Gets a qualifier from claims for which the (raw) property value matches a given literal value.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [time]	{{#invoke:wd|qualifier|mdy|Q55|P1082|17590672|P585}} ↓ Enero 1, 2022	Gets dates in month-day-year order.
Q55 = "Neerlandia", P1082 = "populasion", P585 = "punto iti panawen" ↓ [time]	{{#invoke:wd|qualifier|raw|Q55|P1082|17590672|P585}} ↓ 2022-1-1	Gets a raw date value.
Q55 = "Neerlandia", P1082 = "populasion" ↓ [reference]	{{#invoke:wd|references|Q55|P1082|17590672}} ↓	Gets the references from a particular claim.
Q55 = "Neerlandia", P1082 = "populasion" ↓ [reference]	{{#invoke:wd|references|raw|Q55|P1082|17590672}} ↓	Gets references from a particular claim in their raw form.
Q55 = "Neerlandia", P1081 = "P1081" ↓ [quantity], [reference]	{{#invoke:wd|properties|references|Q55|P1081}} ↓	Gets properties from each claim with any references they have.
Q55 = "Neerlandia", P1081 = "P1081" ↓ [quantity], [reference]	{{#invoke:wd|properties|references|sourced|Q55|P1081}} ↓	Only gets properties from claims that have at least one reference.
Q55 = "Neerlandia", P2855 = "P2855", P518 = "maipakat iti paset" ↓ [entity label]	{{#invoke:wd|qualifier|Q55|P2855|P518}} ↓ makan	Gets a single qualifier value (for each matching claim).
Q55 = "Neerlandia", P2855 = "P2855", P518 = "maipakat iti paset" ↓ [entity label]	{{#invoke:wd|qualifiers|Q55|P2855|P518}} ↓ makan, Q12140, Q688498, Q41298, libro, arte, Q472760, Q55187, Q27686, Q832778, Q184872, Q349, danum	Gets multiple qualifier values (for each matching claim).
Q55 = "Neerlandia", P2855 = "P2855", P518 = "maipakat iti paset" ↓ [quantity], [entity label]	{{#invoke:wd|properties|qualifiers|Q55|P2855|P518}} ↓	Gets multiple property values along with multiple qualifier values.
Q55 = "Neerlandia", P2855 = "P2855", P518 = "maipakat iti paset" ↓ [quantity], [entity label]	{{#invoke:wd|properties|qualifiers|Q55|P2855|P518|sep=_+_|sep%s=|sep%q=_/_}} ↓	Returns the output with custom separators.
Q55 = "Neerlandia", P35 = "daulo ti estado", P580 = "petsa a rugi", P582 = "petsa a patingga" ↓ [entity label], [time]	{{#invoke:wd|properties|qualifier|qualifier|normal+|Q55|P35|P580|P582}} ↓ Q154952 (30 Abril 2013), Q29574 (30 Abril 1980; 30 Abril 2013), Q154946 (4 Septiembre 1948; 30 Abril 1980), Q150747 (23 Nobiembre 1890; 4 Septiembre 1948), Q125649 (17 Marso 1849; 23 Nobiembre 1890), Q154287 (7 Oktubre 1840; 17 Marso 1849), Q2079957 (16 Marso 1815; 7 Oktubre 1840)	Gets two different qualifier values for each claim.
Q55 = "Neerlandia", P35 = "daulo ti estado", P580 = "petsa a rugi", P582 = "petsa a patingga" ↓ [entity label], [time]	{{#invoke:wd|properties|qualifier|qualifier|normal+|Q55|P35|P580|P582|sep%q=_–_}} ↓ Q154952 (30 Abril 2013), Q29574 (30 Abril 1980 – 30 Abril 2013), Q154946 (4 Septiembre 1948 – 30 Abril 1980), Q150747 (23 Nobiembre 1890 – 4 Septiembre 1948), Q125649 (17 Marso 1849 – 23 Nobiembre 1890), Q154287 (7 Oktubre 1840 – 17 Marso 1849), Q2079957 (16 Marso 1815 – 7 Oktubre 1840)	Returns the output with a custom separator.
Q55 = "Neerlandia", P35 = "daulo ti estado", P580 = "petsa a rugi", P582 = "petsa a patingga" ↓ [entity label], [time]	{{#invoke:wd|properties|qualifier|qualifier|normal+|Q55|P35|P580|P582|format=%p[ <span style="font-size:85\%">(%q1[ – %q2])</span>][%s][%r]}} ↓ Q154952 (30 Abril 2013), Q29574 (30 Abril 1980 – 30 Abril 2013), Q154946 (4 Septiembre 1948 – 30 Abril 1980), Q150747 (23 Nobiembre 1890 – 4 Septiembre 1948), Q125649 (17 Marso 1849 – 23 Nobiembre 1890), Q154287 (7 Oktubre 1840 – 17 Marso 1849), Q2079957 (16 Marso 1815 – 7 Oktubre 1840)	Returns the output in a custom format instead of with a custom separator.
Q55 = "Neerlandia", P35 = "daulo ti estado", P580 = "petsa a rugi", P582 = "petsa a patingga" ↓ [entity label], [time]	{{#invoke:wd|properties|qualifier|qualifier|normal+|Q55|P35|P580|P582|format=%p[ <span style="font-size:85\%">([<![]--%q2]since [%q2--[]>]%q1[ – %q2])</span>][%s][%r]}} ↓ Q154952 (since 30 Abril 2013), Q29574 (30 Abril 1980 – 30 Abril 2013), Q154946 (4 Septiembre 1948 – 30 Abril 1980), Q150747 (23 Nobiembre 1890 – 4 Septiembre 1948), Q125649 (17 Marso 1849 – 23 Nobiembre 1890), Q154287 (7 Oktubre 1840 – 17 Marso 1849), Q2079957 (16 Marso 1815 – 7 Oktubre 1840)	To add text only when a certain value is not present, like adding the word since if there is no end time, wrap it in between two optional blocks containing HTML comment tags and the relevant parameter (this also prevents the text from being added to the page source).
Q55 = "Neerlandia", P35 = "daulo ti estado", Q29574 = "Q29574", P580 = "petsa a rugi", P582 = "petsa a patingga" ↓ [entity label], [time]	{{#invoke:wd|properties|qualifier|raw|qualifier|normal+|Q55|P35|Q29574|P580|P582|format=%p[ <span style="font-size:85\%">(%q1[ – %q2])</span>][%s][%r]}} ↓ Q29574 (1980-4-30 – 30 Abril 2013)	Gets a property with qualifiers from claims for which the property matches a given Q-identifier, with one of the qualifier values in its raw form.
Q55 = "Neerlandia", P38 = "kuarta", P518 = "maipakat iti paset" ↓ [entity label]	{{#invoke:wd|properties|qualifiers|normal+|current|Q55|P38|P518}} ↓ Euro (Q2118709), doliar ti Estados Unidos (Q27561)	Gets claims that are currently valid.
Q55 = "Neerlandia", P38 = kuarta", P518 = "maipakat iti paset" ↓ [entity label]	{{#invoke:wd|properties|linked|qualifiers|normal+|current|Q55|P38|P518}} ↓ Euro (Q2118709), doliar ti Estados Unidos (Q27561)	Gets claims with linked property values.
Q55 = "Neerlandia", P38 = kuarta", P518 = "maipakat iti paset" ↓ [entity label]	{{#invoke:wd|properties|qualifiers|linked|normal+|current|Q55|P38|P518}} ↓ Euro (Q2118709), doliar ti Estados Unidos (Q27561)	Gets claims with linked qualifier values.
Q55 = "Neerlandia", P38 = kuarta", P518 = "maipakat iti paset" ↓ [entity label]	{{#invoke:wd|properties|linked|short|qualifiers|linked|normal+|current|Q55|P38|P518}} ↓ Euro (Q2118709), doliar ti Estados Unidos (Q27561)	Gets claims with linked property and qualifier values, with short property values wherever available.
Q55 = "Neerlandia", P38 = kuarta", Q4917 = "doliar ti Estados Unidos", P518 = "maipakat iti paset" ↓ [entity label]	{{#invoke:wd|qualifiers|normal+|current|Q55|P38|Q4917|P518}} ↓ Q27561	Gets qualifiers from claims for which the (raw) property value matches a given Q-identifier.
Q55 = "Neerlandia", P38 = kuarta", P518 = "maipakat iti paset", Q27561 = "Q27561" ↓ [entity label]	{{#invoke:wd|properties|normal+|current|Q55|P38|P518=Q27561}} ↓ doliar ti Estados Unidos	Gets properties from claims for which a (raw) qualifier value matches a given Q-identifier.
Q55 = "Neerlandia", P38 = kuarta" ↓ [entity label]	{{#invoke:wd|properties|normal+|former|Q55|P38}} ↓ Q788472	Gets claims that were valid in the past.
Q55 = "Neerlandia", P38 = kuarta" ↓ [entity label]	{{#invoke:wd|properties|raw|normal+|former|Q55|P38}} ↓ Q788472	Gets raw property values.
Q55 = "Neerlandia", P38 = kuarta" ↓ [entity label]	{{#invoke:wd|properties|raw|linked|normal+|former|Q55|P38}} ↓ Q788472	Gets raw property values that are linked to Wikidata.
Q55 = "Neerlandia", P1549 = "P1549" ↓ [monolingual text]	{{#invoke:wd|property|Q55|P1549}} ↓	Gets a monolingual text value in the current wiki's language.
Q55 = "Neerlandia", P1549 = "P1549", P407 = "pagsasao ti obra wenno nagan", Q36846 = "Q36846" ↓ [monolingual text]	{{#invoke:wd|property|multilanguage|Q55|P1549|P407=Q36846}} ↓	Gets a monolingual text value in any available language.
Q55 = "Neerlandia", P2884 = "P2884" ↓ [quantity]	{{#invoke:wd|property|Q55|P2884}} ↓	Gets a quantity value with its associated unit of measurement.
Q55 = "Neerlandia", P2884 = "P2884" ↓ [quantity]	{{#invoke:wd|property|linked|Q55|P2884}} ↓	Gets a quantity value with a linked unit of measurement.
Q55 = "Neerlandia", P2884 = "P2884" ↓ [quantity]	{{#invoke:wd|property|raw|Q55|P2884}} ↓ 230	Gets a raw quantity value.
Q55 = "Neerlandia", P2884 = "P2884" ↓ [quantity]	{{#invoke:wd|property|unit|Q55|P2884}} ↓	Gets only the unit of measurement.
Q55 = "Neerlandia", P2884 = "P2884" ↓ [quantity]	{{#invoke:wd|property|unit|raw|Q55|P2884}} ↓	Gets the raw unit of measurement.
Q55 = "Neerlandia", P625 = "lokasion ti nagsasabtan" ↓ [globe coordinate]	{{#invoke:wd|property|Q55|P625}} ↓	Gets a globe coordinate value.
Q55 = "Neerlandia", P625 = "lokasion ti nagsasabtan" ↓ [globe coordinate]	{{#invoke:wd|property|linked|Q55|P625}} ↓	Gets a linked globe coordinate value.
Q55 = "Neerlandia", P625 = "lokasion ti nagsasabtan" ↓ [globe coordinate]	{{#invoke:wd|property|raw|Q55|P625}} ↓ 52/19/N/5/33/E	Gets a raw globe coordinate value.
Q55 = "Neerlandia", P625 = "lokasion ti nagsasabtan" ↓ [globe coordinate]	{{#invoke:wd|property|Q55|coord}} ↓	A property alias can be used instead of the P-identifier.
Q55 = "Neerlandia", P41 = "ladawan ti wagayway" ↓ [commons media]	{{#invoke:wd|property|linked|Q55|P41}} ↓ Flag of the Netherlands.svg	Gets a media file name and links to it on Commons.
Q55 = "Neerlandia", P41 = "ladawan ti wagayway" ↓ [commons media]	{{#invoke:wd|property|raw|Q55|P41|format=\[\[File:%p {{!}} thumb {{!}} left\]\]}} ↓	A Commons media file can be included on the page as-is by omitting the linked and raw flags, but by using the raw flag it can be freely formatted.
Q915684 = "Q915684", P2534 = "P2534" ↓ [math]	{{#invoke:wd|property|Q915684|P2534}} ↓ ${\frac {n^{2}-1}{n^{2}+2}}={\frac {4\pi }{3}}N\alpha$	Gets a mathematical expression.
Q6256 = "Pagilian", P3896 = "P3896" ↓ [geographic shape]	{{#invoke:wd|property|linked|Q6256|P3896}} ↓ Data:Naturalearthdata.com/admin-0-countries-no-antarctica.map	Gets a geographic shape data file name and links to it on Commons.
Q4917 = "doliar ti Estados Unidos" ↓ [entity label]	{{#invoke:wd|label|Q4917}} ↓ doliar ti Estados Unidos	Gets an item's label.
Q4917 = "doliar ti Estados Unidos" ↓ [entity label]	{{#invoke:wd|label|short|linked|Q4917}} ↓ doliar ti Estados Unidos	Gets an item's short and linked label.
P38 = kuarta" ↓ [entity label]	{{#invoke:wd|label|P38}} ↓ kuarta	Gets a property's label.
P38 = kuarta" ↓ [entity label]	{{#invoke:wd|label|linked|P38}} ↓ kuarta	Gets a property's label that is linked to Wikidata.
Q776 = "Utrecht" ↓ [entity label]	{{#invoke:wd|label|Q776}} ↓ Utrecht	Gets an item's label.
Q776 = "Utrecht" ↓ [entity label]	{{#invoke:wd|label|linked|Q776}} ↓ Utrecht	Gets an item's linked label.
↓ [entity label]	{{#invoke:wd|label}} ↓ Utrecht	If the modulo is transcluded on the page (which is linked to Q776), then the Q776 can be omitted.
↓ [entity label]	{{#invoke:wd|label|raw}} ↓ Q776	If just the label command with the raw flag is given, then the Q-identifier of the item connected to the current page is returned.
Q776 = "Utrecht" ↓ [page title]	{{#invoke:wd|title|Q776}} ↓	Gets the title of the page on the current wiki that is linked to the given item.
Q776 = "Utrecht" ↓ [page title]	{{#invoke:wd|title|linked|Q776}} ↓	Gets the linked title of the page on the current wiki that is linked to the given item.
↓ [page title]	{{#invoke:wd|title}} ↓	If the modulo is transcluded on the page (which is linked to Q776), then the Q776 can be omitted.
Q55 = "Neerlandia" ↓ [entity description]	{{#invoke:wd|description|Q55}} ↓	Gets an item's description.
↓ [entity description]	{{#invoke:wd|description}} ↓	If the modulo is transcluded on the Olanda page (which is linked to Q55), then the Q55 can be omitted.
Q55 = "Neerlandia" ↓ [entity alias]	{{#invoke:wd|alias|Q55}} ↓	Gets one of an item's aliases.
Q55 = "Neerlandia" ↓ [entity alias]	{{#invoke:wd|aliases|Q55}} ↓	Gets all of an item's aliases.
Q55 = "Neerlandia" ↓ [entity alias]	{{#invoke:wd|alias|linked|Q55}} ↓	Gets a linked alias from an item.
↓ [entity alias]	{{#invoke:wd|alias}} ↓	If the modulo is transcluded on the Olanda page (which is linked to Q55), then the Q55 can be omitted.
Q2 = "Daga" ↓ [page badge]	{{#invoke:wd|badges|Q2}} ↓	Gets the badges for the page on the current wiki that is linked to the given item.
Q2 = "Daga" ↓ [page badge]	{{#invoke:wd|badges|raw|Q2}} ↓	Gets the raw badges for the page on the current wiki that is linked to the given item.
↓ [page badge]	{{#invoke:wd|badges}} ↓	If the modulo is transcluded on the Daga (planeta) page (which is linked to Q2), then the Q2 can be omitted.

Example references

See also

• {{Wikidata}}, a user-friendly wrapper template for this module.
• {{WikidataOI}}, a wrapper template for this module that adds an opt-in toggle.
• {{Pageid to title}}, to get a page title using its local page id, rather than Wikidata

Ti dokumentasion dita ngato ket nailak-am manipud iti Modulo:Wd/dok. (urnosen | pakasaritaan)
Mabalin dagiti editor ti agipadas kadagiti panid ti pagipadasan (urnosen | dip) ken pangsubok a kaskaso (agpartuat) iti daytoy a modulo.
Pangngaasi nga ikabil dagiti kategoria iti subpanid ti /dok. Dagiti subpanid daytoy a modulo.

-- Original module located at [[:en:Module:Wd]] and [[:en:Module:Wd/i18n]].

local p = {}
local arg = ...
local i18n

function loadSubmodules(frame)
	-- internationalization
	if not i18n then
		if frame then
			-- module invoked by page/template, get its title from frame
			i18n = require(frame:getTitle().."/i18n")
		else
			-- module included by other module, get its title from ...
			i18n = require(arg.."/i18n")
		end
	end
end

local aliasesP = {
	coord           = "P625",
	---------------
	author          = "P50",
	publisher       = "P123",
	importedFrom    = "P143",
	statedIn        = "P248",
	publicationDate = "P577",
	startTime       = "P580",
	endTime         = "P582",
	retrieved       = "P813",
	referenceURL    = "P854",
	archiveURL      = "P1065",
	title           = "P1476",
	quote           = "P1683",
	shortName       = "P1813",
	language        = "P2439",
	archiveDate     = "P2960"
}

local aliasesQ = {
	percentage              = "Q11229",
	prolepticJulianCalendar = "Q1985786"
}

local parameters = {
	property  = "%p",
	qualifier = "%q",
	reference = "%r",
	separator = "%s",
	general   = "%x"
}

local formats = {
	property              = "%p[%s][%r]",
	qualifier             = "%q[%s][%r]",
	reference             = "%r",
	propertyWithQualifier = "%p[ <span style=\"font-size:smaller\">(%q)</span>][%s][%r]"
}

local hookNames = {              -- {level_1, level_2}
	[parameters.property]         = {"getProperty"},
	[parameters.reference]        = {"getReferences", "getReference"},
	[parameters.qualifier]        = {"getAllQualifiers"},
	[parameters.qualifier.."\\d"] = {"getQualifiers", "getQualifier"}
}

-- default value objects, should NOT be mutated but instead copied
local defaultSeparators = {
	["sep"]      = {" "},
	["sep%s"]    = {","},
	["sep%q"]    = {"; "},
	["sep%q\\d"] = {", "},
	["sep%r"]    = nil,  -- none
	["punc"]     = nil   -- none
}

local Config = {}
Config.__index = Config

-- allows for recursive calls
function Config.new()
	local cfg = {}
	setmetatable(cfg, Config)
	
	cfg.separators = {
		-- single value objects wrapped in arrays so that we can pass by reference
		["sep"]   = {copyTable(defaultSeparators["sep"])},
		["sep%s"] = {copyTable(defaultSeparators["sep%s"])},
		["sep%q"] = {copyTable(defaultSeparators["sep%q"])},
		["sep%r"] = {copyTable(defaultSeparators["sep%r"])},
		["punc"]  = {copyTable(defaultSeparators["punc"])}
	}
	
	cfg.entity = nil
	cfg.propertyID = nil
	cfg.propertyValue = nil
	cfg.qualifierIDs = {}
	cfg.qualifierIDsAndValues = {}
	
	cfg.bestRank = true
	cfg.ranks = {true, true, false}  -- preferred = true, normal = true, deprecated = false
	cfg.foundRank = #cfg.ranks
	cfg.flagBest = false
	cfg.flagRank = false
	
	cfg.periods = {true, true, true}  -- future = true, current = true, former = true
	cfg.flagPeriod = false
	
	cfg.mdyDate = false
	cfg.singleClaim = false
	cfg.sourcedOnly = false
	
	cfg.pageTitle = false
	
	cfg.langCode = mw.language.getContentLanguage().code
	cfg.langName = mw.language.fetchLanguageName(cfg.langCode, cfg.langCode)
	cfg.langObj = mw.language.new(cfg.langCode)
	
	cfg.states = {}
	cfg.states.qualifiersCount = 0
	cfg.curState = nil
	
	cfg.prefetchedRefs = nil
	
	return cfg
end

local State = {}
State.__index = State

function State.new(cfg)
	local stt = {}
	setmetatable(stt, State)
	
	stt.conf = cfg
	
	stt.results = {}
	
	stt.parsedFormat = {}
	stt.separator = {}
	stt.movSeparator = {}
	stt.puncMark = {}
	
	stt.linked = false
	stt.rawValue = false
	stt.shortName = false
	stt.singleValue = false
	
	return stt
end

function replaceAlias(ID)
	if aliasesP[ID] then
		ID = aliasesP[ID]
	end
	
	return ID
end

function applyStringParams(str, ...)
	for i, v in ipairs(arg) do
		str = mw.ustring.gsub(str, "$"..i, v)
	end
	
	return str
end

function unknownDataTypeError(dataType)
	return applyStringParams(i18n['errors']['unknown-data-type'], dataType)
end

function missingRequiredParameterError()
	return i18n['errors']['missing-required-parameter']
end

function extraRequiredParameterError(param)
	return applyStringParams(i18n['errors']['extra-required-parameter'], param)
end

function getOrdinalSuffix(num)
	return i18n.getOrdinalSuffix(num)
end

function addDelimiters(num)
	return i18n.addDelimiters(num)
end

function replaceDecimalMark(num)
	return mw.ustring.gsub(num, "[.]", i18n['numeric']['decimal-mark'], 1)
end

function replaceSpecialChar(chr)
	if chr == '_' then
		-- replace underscores with spaces
		return ' '
	else
		return chr
	end
end

function replaceSpecialChars(str)
	local chr
	local esc = false
	local strOut = ""
	
	for i = 1, #str do
		chr = str:sub(i,i)
		
		if not esc then
			if chr == '\\' then
				esc = true
			else
				strOut = strOut .. replaceSpecialChar(chr)
			end
		else
			strOut = strOut .. chr
			esc = false
		end
	end
	
	return strOut
end

function buildWikilink(target, label)
	if target == label then
		return "[[" .. target .. "]]"
	else
		return "[[" .. target .. "|" .. label .. "]]"
	end
end

-- used to make frame.args mutable, to replace #frame.args (which is always 0)
-- with the actual amount and to simply copy tables
function copyTable(tIn)
	if not tIn then
		return nil
	end
	
	local tOut = {}
	
	for i, v in pairs(tIn) do
		tOut[i] = v
	end
	
	return tOut
end

-- used to merge output arrays together;
-- note that it currently mutates the first input array
function mergeArrays(a1, a2)
	for i = 1, #a2 do
		a1[#a1 + 1] = a2[i]
	end
	
	return a1
end

-- used to create the final output string when it's all done, so that for references the
-- function extensionTag("ref", ...) is only called when they really ended up in the final output
function concatValues(valuesArray)
	local outString = ""
	local j, skip
	
	for i = 1, #valuesArray do
		-- check if this is a reference
		if valuesArray[i].refHash then
			j = i - 1
			skip = false
			
			-- skip this reference if it is part of a continuous row of references that already contains the exact same reference
			while valuesArray[j] and valuesArray[j].refHash do
				if valuesArray[i].refHash == valuesArray[j].refHash then
					skip = true
					break
				end
				j = j - 1
			end
			
			if not skip then
				-- add <ref> tag with the reference's hash as its name (to deduplicate references)
				outString = outString .. mw.getCurrentFrame():extensionTag("ref", valuesArray[i][1], {name = "wikidata-" .. valuesArray[i].refHash})
			end
		else
			outString = outString .. valuesArray[i][1]
		end
	end

	return outString
end

function parseWikidataURL(url)
	local i, j
	
	if url:match('^http[s]?://') then
		i, j = url:find("Q")
		
		if i then
			return url:sub(i)
		end
	end
	
	return nil
end

function parseDate(dateStr, precision)
	precision = precision or "d"
	local i, j, index, ptr
	local parts = {nil, nil, nil}
	
	if dateStr == nil then
		return parts[1], parts[2], parts[3]  -- year, month, day
	end
	
	-- 'T' for snak values, '/' for outputs with '/Julian' attached
	i, j = dateStr:find("[T/]")
	
	if i then
		dateStr = dateStr:sub(1, i-1)
	end
	
	local from = 1
	
	if dateStr:sub(1,1) == "-" then
		-- this is a negative number, look further ahead
		from = 2
	end
	
	index = 1
	ptr = 1
	
	i, j = dateStr:find("-", from)
	
	if i then
		-- year
		parts[index] = tonumber(mw.ustring.gsub(dateStr:sub(ptr, i-1), "^\+(.+)$", "%1"), 10)  -- remove '+' sign (explicitly give base 10 to prevent error)
		
		if parts[index] == -0 then
			parts[index] = tonumber("0")  -- for some reason, 'parts[index] = 0' may actually store '-0', so parse from string instead
		end
		
		if precision == "y" then
			-- we're done
			return parts[1], parts[2], parts[3]  -- year, month, day
		end
		
		index = index + 1
		ptr = i + 1
		
		i, j = dateStr:find("-", ptr)
		
		if i then
			-- month
			parts[index] = tonumber(dateStr:sub(ptr, i-1), 10)
			
			if precision == "m" then
				-- we're done
				return parts[1], parts[2], parts[3]  -- year, month, day
			end
			
			index = index + 1
			ptr = i + 1
		end
	end
	
	if dateStr:sub(ptr) ~= "" then
		-- day if we have month, month if we have year, or year
		parts[index] = tonumber(dateStr:sub(ptr), 10)
	end
	
	return parts[1], parts[2], parts[3]  -- year, month, day
end

function datePrecedesDate(aY, aM, aD, bY, bM, bD)
	if aY == nil or bY == nil then
		return nil
	end
	aM = aM or 1
	aD = aD or 1
	bM = bM or 1
	bD = bD or 1
	
	if aY < bY then
		return true
	end
	
	if aY > bY then
		return false
	end
	
	if aM < bM then
		return true
	end
	
	if aM > bM then
		return false
	end
	
	if aD < bD then
		return true
	end
	
	return false
end

function getHookName(param, index)
	if hookNames[param] then
		return hookNames[param][index]
	elseif param:len() > 2 then
		return hookNames[param:sub(1, 2).."\\d"][index]
	else
		return nil
	end
end

function alwaysTrue()
	return true
end

-- The following function parses a format string.
--
-- The example below shows how a parsed string is structured in memory.
-- Variables other than 'str' and 'child' are left out for clarity's sake.
--
-- Example:
-- "A %p B [%s[%q1]] C [%r] D"
--
-- Structure:
-- [
--   {
--     str = "A "
--   },
--   {
--     str = "%p"
--   },
--   {
--     str = " B ",
--     child =
--     [
--       {
--         str = "%s",
--         child =
--         [
--           {
--             str = "%q1"
--           }
--         ]
--       }
--     ]
--   },
--   {
--     str = " C ",
--     child =
--     [
--       {
--         str = "%r"
--       }
--     ]
--   },
--   {
--     str = " D"
--   }
-- ]
--
function parseFormat(str)
	local chr, esc, param, root, cur, prev, new
	local params = {}
	
	local function newObject(array)
		local obj = {}  -- new object
		obj.str = ""
		
		array[#array + 1] = obj  -- array{object}
		obj.parent = array
		
		return obj
	end
	
	local function endParam()
		if param > 0 then
			if cur.str ~= "" then
				cur.str = "%"..cur.str
				cur.param = true
				params[cur.str] = true
				cur.parent.req[cur.str] = true
				prev = cur
				cur = newObject(cur.parent)
			end
			param = 0
		end
	end
	
	root = {}  -- array
	root.req = {}
	cur = newObject(root)
	prev = nil
	
	esc = false
	param = 0
	
	for i = 1, #str do
		chr = str:sub(i,i)
		
		if not esc then
			if chr == '\\' then
				endParam()
				esc = true
			elseif chr == '%' then
				endParam()
				if cur.str ~= "" then
					cur = newObject(cur.parent)
				end
				param = 2
			elseif chr == '[' then
				endParam()
				if prev and cur.str == "" then
					table.remove(cur.parent)
					cur = prev
				end
				cur.child = {}  -- new array
				cur.child.req = {}
				cur.child.parent = cur
				cur = newObject(cur.child)
			elseif chr == ']' then
				endParam()
				if cur.parent.parent then
					new = newObject(cur.parent.parent.parent)
					if cur.str == "" then
						table.remove(cur.parent)
					end
					cur = new
				end
			else
				if param > 1 then
					param = param - 1
				elseif param == 1 then
					if not chr:match('%d') then
						endParam()
					end
				end
				
				cur.str = cur.str .. replaceSpecialChar(chr)
			end
		else
			cur.str = cur.str .. chr
			esc = false
		end
		
		prev = nil
	end
	
	endParam()
	
	return root, params
end

function convertRank(rank)
	if rank == "preferred" then
		return 1
	elseif rank == "normal" then
		return 2
	elseif rank == "deprecated" then
		return 3
	else
		return 4  -- default (in its literal sense)
	end
end

function sortOnRank(claims)
	local rankPos
	local ranks = {{}, {}, {}, {}}  -- preferred, normal, deprecated, (default)
	local sorted = {}
	
	for i, v in ipairs(claims) do
		rankPos = convertRank(v.rank)
		ranks[rankPos][#ranks[rankPos] + 1] = v
	end
	
	sorted = ranks[1]
	sorted = mergeArrays(sorted, ranks[2])
	sorted = mergeArrays(sorted, ranks[3])
	
	return sorted
end

function getShortName(ID)
	if ID then
		return p._property({ID, aliasesP.shortName})  -- "property" is single
	else
		return p._property({aliasesP.shortName})  -- "property" is single
	end
end

function getLabel(ID)
	if ID then
		return p._label({ID})
	else
		return p._label({})
	end
end

function Config:convertUnit(unit, link)
	link = link or false
	local itemID, label, lang, title
	
	if unit == "" or unit == "1" then
		return nil
	end
	
	itemID = parseWikidataURL(unit)
	
	if itemID then
		if itemID == aliasesQ.percentage then
			return "%"
		else
			label, lang = mw.wikibase.getLabelWithLang(itemID)
			
			-- don't allow language fallback
			if lang ~= self.langCode then
				label = nil
			end
			
			title = nil
			
			if link or label == nil then
				title = mw.wikibase.sitelink(itemID)
			end
			
			if link then
				if title then
					return " " .. buildWikilink(title, (label or title))
				end
				
				if not label then
					return " " .. buildWikilink("d:" .. itemID, itemID)
				end
			end
			
			return " " .. (label or title or itemID)
		end
	end
	
	return " " .. unit
end

function Config:getValue(snak, raw, link, short, anyLang)
	raw = raw or false
	link = link or false
	short = short or false
	anyLang = anyLang or false
	
	if snak.snaktype == 'value' then
		if snak.datavalue.type == 'string' then
			if snak.datatype == 'url' and link then
				-- create link explicitly
				if raw then
					-- will render as a linked number like [1]
					return "[" .. snak.datavalue.value .. "]"
				else
					return "[" .. snak.datavalue.value .. " " .. snak.datavalue.value .. "]"
				end
			elseif snak.datatype == 'commonsMedia' then
				if link then
					if raw then
						-- will render as a linked number like [1]
						return "[https://commons.wikimedia.org/wiki/File:" .. mw.ustring.gsub(snak.datavalue.value, " ", "_") .. "]"
					else
						return "[https://commons.wikimedia.org/wiki/File:" .. mw.ustring.gsub(snak.datavalue.value, " ", "_") .. " " .. snak.datavalue.value .. "]"
					end
				elseif not raw then
					return "[[File:" .. snak.datavalue.value .. "]]"
				else
					return snak.datavalue.value
				end
			elseif snak.datatype == 'geo-shape' and link then
				if raw then
					-- will render as a linked number like [1]
					return "[https://commons.wikimedia.org/wiki/" .. mw.ustring.gsub(snak.datavalue.value, " ", "_") .. "]"
				else
					return "[https://commons.wikimedia.org/wiki/" .. mw.ustring.gsub(snak.datavalue.value, " ", "_") .. " " .. snak.datavalue.value .. "]"
				end
			elseif snak.datatype == 'math' and not raw then
				return mw.getCurrentFrame():extensionTag("math", snak.datavalue.value)
			else
				return snak.datavalue.value
			end
		elseif snak.datavalue.type == 'monolingualtext' then
			if anyLang then
				return snak.datavalue.value['text'], snak.datavalue.value['language']
			elseif snak.datavalue.value['language'] == self.langCode then
				return snak.datavalue.value['text']
			else
				return nil
			end
		elseif snak.datavalue.type == 'quantity' then
			-- strip + signs from front
			local value = mw.ustring.gsub(snak.datavalue.value['amount'], "^\+(.+)$", "%1")
			
			if not raw then
				-- replace decimal mark based on locale
				value = replaceDecimalMark(value)
				
				-- add delimiters for readability
				value = addDelimiters(value)
				
				local unit = self:convertUnit(snak.datavalue.value['unit'], link)
				
				if unit then
					value = value .. unit
				end
			end
			
			return value
		elseif snak.datavalue.type == 'time' then
			local y, m, d, p, yDiv, yRound, yFull, value, calendarID, dateStr
			local yFactor = 1
			local sign = 1
			local prefix = ""
			local suffix = ""
			local mayAddCalendar = false
			local calendar = ""
			local precision = snak.datavalue.value['precision']
			
			if precision == 11 then
				p = "d"
			elseif precision == 10 then
				p = "m"
			else
				p = "y"
				yFactor = 10^(9-precision)
			end
			
			y, m, d = parseDate(snak.datavalue.value['time'], p)
			
			if y < 0 then
				sign = -1
				y = y * sign
			end
			
			-- if precision is tens/hundreds/thousands/millions/billions of years
			if precision <= 8 then
				yDiv = y / yFactor
				
				-- if precision is tens/hundreds/thousands of years
				if precision >= 6 then
					mayAddCalendar = true
					
					if precision <= 7 then
						-- round centuries/millenniums up (e.g. 20th century or 3rd millennium)
						yRound = math.ceil(yDiv)
						
						if not raw then
							if precision == 6 then
								suffix = i18n['datetime']['suffixes']['millennium']
							else
								suffix = i18n['datetime']['suffixes']['century']
							end
							
							suffix = getOrdinalSuffix(yRound) .. suffix
						else
							-- if not verbose, take the first year of the century/millennium
							-- (e.g. 1901 for 20th century or 2001 for 3rd millennium)
							yRound = (yRound - 1) * yFactor + 1
						end
					else
						-- precision == 8
						-- round decades down (e.g. 2010s)
						yRound = math.floor(yDiv) * yFactor
						
						if not raw then
							prefix = i18n['datetime']['prefixes']['decade-period']
							suffix = i18n['datetime']['suffixes']['decade-period']
						end
					end
					
					if raw and sign < 0 then
						-- if BCE then compensate for "counting backwards"
						-- (e.g. -2019 for 2010s BCE, -2000 for 20th century BCE or -3000 for 3rd millennium BCE)
						yRound = yRound + yFactor - 1
					end
				else
					local yReFactor, yReDiv, yReRound
					
					-- round to nearest for tens of thousands of years or more
					yRound = math.floor(yDiv + 0.5)
					
					if yRound == 0 then
						if precision <= 2 and y ~= 0 then
							yReFactor = 1e6
							yReDiv = y / yReFactor
							yReRound = math.floor(yReDiv + 0.5)
							
							if yReDiv == yReRound then
								-- change precision to millions of years only if we have a whole number of them
								precision = 3
								yFactor = yReFactor
								yRound = yReRound
							end
						end
						
						if yRound == 0 then
							-- otherwise, take the unrounded (original) number of years
							precision = 5
							yFactor = 1
							yRound = y
							mayAddCalendar = true
						end
					end
					
					if precision >= 1 and y ~= 0 then
						yFull = yRound * yFactor
						
						yReFactor = 1e9
						yReDiv = yFull / yReFactor
						yReRound = math.floor(yReDiv + 0.5)
						
						if yReDiv == yReRound then
							-- change precision to billions of years if we're in that range
							precision = 0
							yFactor = yReFactor
							yRound = yReRound
						else
							yReFactor = 1e6
							yReDiv = yFull / yReFactor
							yReRound = math.floor(yReDiv + 0.5)
							
							if yReDiv == yReRound then
								-- change precision to millions of years if we're in that range
								precision = 3
								yFactor = yReFactor
								yRound = yReRound
							end
						end
					end
					
					if not raw then
						if precision == 3 then
							suffix = i18n['datetime']['suffixes']['million-years']
						elseif precision == 0 then
							suffix = i18n['datetime']['suffixes']['billion-years']
						else
							yRound = yRound * yFactor
							if yRound == 1 then
								suffix = i18n['datetime']['suffixes']['year']
							else
								suffix = i18n['datetime']['suffixes']['years']
							end
						end
					else
						yRound = yRound * yFactor
					end
				end
			else
				yRound = y
				mayAddCalendar = true
			end
			
			if mayAddCalendar then
				calendarID = parseWikidataURL(snak.datavalue.value['calendarmodel'])
				
				if calendarID and calendarID == aliasesQ.prolepticJulianCalendar then
					if not raw then
						if link then
							calendar = " ("..buildWikilink(i18n['datetime']['julian-calendar'], i18n['datetime']['julian'])..")"
						else
							calendar = " ("..i18n['datetime']['julian']..")"
						end
					else
						calendar = "/"..i18n['datetime']['julian']
					end
				end
			end
			
			if not raw then
				local ce = nil
				
				if sign < 0 then
					ce = i18n['datetime']['BCE']
				elseif precision <= 5 then
					ce = i18n['datetime']['CE']
				end
				
				if ce then
					if link then
						ce = buildWikilink(i18n['datetime']['common-era'], ce)
					end
					suffix = suffix .. " " .. ce
				end
				
				value = tostring(yRound)
				
				if m then
					dateStr = self.langObj:formatDate("F", "1-"..m.."-1")
					
					if d then
						if self.mdyDate then
							dateStr = dateStr .. " " .. d .. ","
						else
							dateStr = d .. " " .. dateStr
						end
					end
					
					value = dateStr .. " " .. value
				end
				
				value = prefix .. value .. suffix .. calendar
			else
				value = tostring(yRound * sign)
				
				if m then
					value = value .. "-" .. m
					
					if d then
						value = value .. "-" .. d
					end
				end
				
				value = value .. calendar
			end
			
			return value
		elseif snak.datavalue.type == 'globecoordinate' then
			-- logic from https://github.com/DataValues/Geo
			
			local precision, numDigits, strFormat, value, globe
			local latValue, latitude, latDegrees, latMinutes, latSeconds
			local lonValue, longitude, lonDegrees, lonMinutes, lonSeconds
			local latDirection, latDirectionN, latDirectionS, latDirectionEN
			local lonDirection, lonDirectionE, lonDirectionW, lonDirectionEN
			
			local latDirectionEN_N = "N"
			local latDirectionEN_S = "S"
			local lonDirectionEN_E = "E"
			local lonDirectionEN_W = "W"
			
			if not raw then
				latDirectionN = i18n['coord']['latitude-north']
				latDirectionS = i18n['coord']['latitude-south']
				lonDirectionE = i18n['coord']['longitude-east']
				lonDirectionW = i18n['coord']['longitude-west']
				
				degSymbol = i18n['coord']['degrees']
				minSymbol = i18n['coord']['minutes']
				secSymbol = i18n['coord']['seconds']
				separator = i18n['coord']['separator']
			else
				latDirectionN = latDirectionEN_N
				latDirectionS = latDirectionEN_S
				lonDirectionE = lonDirectionEN_E
				lonDirectionW = lonDirectionEN_W
				
				degSymbol = "/"
				minSymbol = "/"
				secSymbol = "/"
				separator = "/"
			end
			
			latitude = snak.datavalue.value['latitude']
			longitude = snak.datavalue.value['longitude']
			
			if latitude < 0 then
				latDirection = latDirectionS
				latDirectionEN = latDirectionEN_S
				latitude = math.abs(latitude)
			else
				latDirection = latDirectionN
				latDirectionEN = latDirectionEN_N
			end
			
			if longitude < 0 then
				lonDirection = lonDirectionW
				lonDirectionEN = lonDirectionEN_W
				longitude = math.abs(longitude)
			else
				lonDirection = lonDirectionE
				lonDirectionEN = lonDirectionEN_E
			end
			
			precision = snak.datavalue.value['precision']
			
			latitude = math.floor(latitude / precision + 0.5) * precision
			longitude = math.floor(longitude / precision + 0.5) * precision
			
			numDigits = math.ceil(-math.log10(3600 * precision))
			
			if numDigits < 0 or numDigits == -0 then
				numDigits = tonumber("0")  -- for some reason, 'numDigits = 0' may actually store '-0', so parse from string instead
			end
			
			strFormat = "%." .. numDigits .. "f"
			
			-- use string.format() to strip decimal point followed by a zero (.0) for whole numbers
			latSeconds = tonumber(strFormat:format(math.floor(latitude * 3600 * 10^numDigits + 0.5) / 10^numDigits))
			lonSeconds = tonumber(strFormat:format(math.floor(longitude * 3600 * 10^numDigits + 0.5) / 10^numDigits))
			
			latMinutes = math.floor(latSeconds / 60)
			lonMinutes = math.floor(lonSeconds / 60)
			
			latSeconds = latSeconds - (latMinutes * 60)
			lonSeconds = lonSeconds - (lonMinutes * 60)
			
			latDegrees = math.floor(latMinutes / 60)
			lonDegrees = math.floor(lonMinutes / 60)
			
			latMinutes = latMinutes - (latDegrees * 60)
			lonMinutes = lonMinutes - (lonDegrees * 60)
			
			latValue = latDegrees .. degSymbol
			lonValue = lonDegrees .. degSymbol
			
			if precision < 1 then
				latValue = latValue .. latMinutes .. minSymbol
				lonValue = lonValue .. lonMinutes .. minSymbol
			end
			
			if precision < (1 / 60) then
				latSeconds = strFormat:format(latSeconds)
				lonSeconds = strFormat:format(lonSeconds)
				
				if not raw then
					-- replace decimal marks based on locale
					latSeconds = replaceDecimalMark(latSeconds)
					lonSeconds = replaceDecimalMark(lonSeconds)
				end
				
				latValue = latValue .. latSeconds .. secSymbol
				lonValue = lonValue .. lonSeconds .. secSymbol
			end
			
			latValue = latValue .. latDirection
			lonValue = lonValue .. lonDirection
			
			value = latValue .. separator .. lonValue
			
			if link then
				globe = parseWikidataURL(snak.datavalue.value['globe'])
				
				if globe then
					globe = mw.wikibase.getEntity(globe):getLabel("en"):lower()
				else
					globe = "earth"
				end
				
				value = "[https://tools.wmflabs.org/geohack/geohack.php?language="..self.langCode.."&params="..latitude.."_"..latDirectionEN.."_"..longitude.."_"..lonDirectionEN.."_globe:"..globe.." "..value.."]"
			end
			
			return value
		elseif snak.datavalue.type == 'wikibase-entityid' then
			local lang
			local value = ""
			local title = nil
			local itemID = "Q" .. snak.datavalue.value['numeric-id']
			
			if raw then
				if link then
					return buildWikilink("d:" .. itemID, itemID)
				else
					return itemID
				end
			end
			
			if short then
				value = getShortName(itemID)
			end
			
			if value == "" then
				value, lang = mw.wikibase.getLabelWithLang(itemID)
				
				-- don't allow language fallback
				if lang ~= self.langCode then
					value = nil
				end
			end
			
			if link or value == nil then
				title = mw.wikibase.sitelink(itemID)
			end
			
			if link then
				if title then
					value = buildWikilink(title, (value or title))
				elseif not value then
					value = buildWikilink("d:" .. itemID, itemID)
				end
			elseif not value then
				value = (title or itemID)
			end
			
			return value
		else
			return '<strong class="error">' .. unknownDataTypeError(snak.datavalue.type) .. '</strong>'
		end
	elseif snak.snaktype == 'somevalue' then
		if raw then
			return " "  -- single space represents 'somevalue'
		else
			return i18n['values']['unknown']
		end
	elseif snak.snaktype == 'novalue' then
		if raw then
			return ""  -- empty string represents 'novalue'
		else
			return i18n['values']['none']
		end
	else
		return nil
	end
end

function Config:getSingleRawQualifier(claim, qualifierID)
	local qualifiers
	
	if claim.qualifiers then qualifiers = claim.qualifiers[qualifierID] end
	
	if qualifiers and qualifiers[1] then
		return self:getValue(qualifiers[1], true)  -- raw = true
	else
		return nil
	end
end

function Config:snakEqualsValue(snak, value)
	local snakValue = self:getValue(snak, true)  -- raw = true
	
	if snakValue and snak.snaktype == 'value' and snak.datavalue.type == 'wikibase-entityid' then value = value:upper() end
	
	return snakValue == value
end

function Config:setRank(rank)
	local rankPos
	
	if rank == "best" then
		self.bestRank = true
		self.flagBest = true  -- mark that 'best' flag was given
		return
	end
	
	if rank:sub(1,9) == "preferred" then
		rankPos = 1
	elseif rank:sub(1,6) == "normal" then
		rankPos = 2
	elseif rank:sub(1,10) == "deprecated" then
		rankPos = 3
	else
		return
	end
	
	-- one of the rank flags was given, check if another one was given before
	if not self.flagRank then
		self.ranks = {false, false, false}  -- no other rank flag given before, so unset ranks
		self.bestRank = self.flagBest       -- unsets bestRank only if 'best' flag was not given before
		self.flagRank = true                -- mark that a rank flag was given
	end
	
	if rank:sub(-1) == "+" then
		for i = rankPos, 1, -1 do
			self.ranks[i] = true
		end
	elseif rank:sub(-1) == "-" then
		for i = rankPos, #self.ranks do
			self.ranks[i] = true
		end
	else
		self.ranks[rankPos] = true
	end
end

function Config:setPeriod(period)
	local periodPos
	
	if period == "future" then
		periodPos = 1
	elseif period == "current" then
		periodPos = 2
	elseif period == "former" then
		periodPos = 3
	else
		return
	end
	
	-- one of the period flags was given, check if another one was given before
	if not self.flagPeriod then
		self.periods = {false, false, false}  -- no other period flag given before, so unset periods
		self.flagPeriod = true                -- mark that a period flag was given
	end
	
	self.periods[periodPos] = true
end

function Config:processFlag(flag)
	if not flag then
		return false
	else
		flag = mw.text.trim(flag)
	end
	
	if flag == "linked" then
		self.curState.linked = true
		return true
	elseif flag == "raw" then
		self.curState.rawValue = true
		
		if self.curState == self.states[parameters.reference] then
			-- raw reference values end with periods and require a separator (other than none)
			self.separators["sep%r"][1] = {" "}
		end
		
		return true
	elseif flag == "short" then
		self.curState.shortName = true
		return true
	elseif flag == "mdy" then
		self.mdyDate = true
		return true
	elseif flag == "single" then
		self.singleClaim = true
		return true
	elseif flag == "sourced" then
		self.sourcedOnly = true
		return true
	elseif flag == "best" or flag:match('^preferred[+-]?$') or flag:match('^normal[+-]?$') or flag:match('^deprecated[+-]?$') then
		self:setRank(flag)
		return true
	elseif flag == "future" or flag == "current" or flag == "former" then
		self:setPeriod(flag)
		return true
	elseif flag == "" then
		-- ignore empty flags and carry on
		return true
	else
		return false
	end
end

function Config:processFlagOrCommand(flag)
	local param = ""
	
	if not flag then
		return false
	else
		flag = mw.text.trim(flag)
	end
	
	if flag == "property" or flag == "properties" then
		param = parameters.property
	elseif flag:match('^qualifier[s]?$') then
		self.states.qualifiersCount = self.states.qualifiersCount + 1
		param = parameters.qualifier .. self.states.qualifiersCount
		self.separators["sep"..param] = {copyTable(defaultSeparators["sep%q\\d"])}
	elseif flag:match('^reference[s]?$') then
		param = parameters.reference
	else
		return self:processFlag(flag)
	end
	
	if self.states[param] then
		return false
	end
	
	-- create a new state for each command
	self.states[param] = State.new(self)
	
	-- use "%x" as the general parameter name
	self.states[param].parsedFormat = parseFormat(parameters.general)  -- will be overwritten for param=="%p"
	
	-- set the separator
	self.states[param].separator = self.separators["sep"..param]  -- will be nil for param=="%p", which will be set separately
	
	if flag:sub(-1) ~= 's' then
		self.states[param].singleValue = true
	end
	
	self.curState = self.states[param]
	
	return true
end

function Config:qualifierMatches(claim, ID, value)
	local qualifiers
	
	if claim.qualifiers then qualifiers = claim.qualifiers[ID] end
	if qualifiers then
		for i, v in pairs(qualifiers) do
			if self:snakEqualsValue(v, value) then
				return true
			end
		end
	elseif value == "" then
		-- if the qualifier is not present then treat it the same as the special value 'novalue'
		return true
	end
	
	return false
end

function Config:rankMatches(rankPos)
	if self.bestRank then
		return (self.ranks[rankPos] and self.foundRank >= rankPos)
	else
		return self.ranks[rankPos]
	end
end

function Config:timeMatches(claim)
	local startTime = nil
	local startTimeY = nil
	local startTimeM = nil
	local startTimeD = nil
	local endTime = nil
	local endTimeY = nil
	local endTimeM = nil
	local endTimeD = nil
	
	if self.periods[1] and self.periods[2] and self.periods[3] then
		-- any time
		return true
	end
	
	local now = os.date('!*t')
	
	startTime = self:getSingleRawQualifier(claim, aliasesP.startTime)
	if startTime and startTime ~= "" and startTime ~= " " then
		startTimeY, startTimeM, startTimeD = parseDate(startTime)
	end
	
	endTime = self:getSingleRawQualifier(claim, aliasesP.endTime)
	if endTime and endTime ~= "" and endTime ~= " " then
		endTimeY, endTimeM, endTimeD = parseDate(endTime)
	elseif endTime == " " then
		-- end time is 'unknown', assume it is somewhere in the past;
		-- we can do this by taking the current date as a placeholder for the end time
		endTimeY = now['year']
		endTimeM = now['month']
		endTimeD = now['day']
	end
	
	if startTimeY ~= nil and endTimeY ~= nil and datePrecedesDate(endTimeY, endTimeM, endTimeD, startTimeY, startTimeM, startTimeD) then
		-- invalidate end time if it precedes start time
		endTimeY = nil
		endTimeM = nil
		endTimeD = nil
	end
	
	if self.periods[1] then
		-- future
		if startTimeY and datePrecedesDate(now['year'], now['month'], now['day'], startTimeY, startTimeM, startTimeD) then
			return true
		end
	end
	
	if self.periods[2] then
		-- current
		if (startTimeY == nil or not datePrecedesDate(now['year'], now['month'], now['day'], startTimeY, startTimeM, startTimeD)) and
		   (endTimeY == nil or datePrecedesDate(now['year'], now['month'], now['day'], endTimeY, endTimeM, endTimeD)) then
			return true
		end
	end
	
	if self.periods[3] then
		-- former
		if endTimeY and not datePrecedesDate(now['year'], now['month'], now['day'], endTimeY, endTimeM, endTimeD) then
			return true
		end
	end
	
	return false
end

-- determines if a claim has references by prefetching them from the claim using getReferences,
-- which applies some filtering that determines if a reference is actually returned,
-- and caches the references for later use
function State:isSourced(claim)
	self.conf.prefetchedRefs = self:getReferences(claim)
	return (#self.conf.prefetchedRefs > 0)
end

function State:resetCaches()
	-- any prefetched references of the previous claim must not be used
	self.conf.prefetchedRefs = nil
end

function State:claimMatches(claim)
	local matches, rankPos
	
	-- first of all, reset any cached values used for the previous claim
	self:resetCaches()
	
	-- if a property value was given, check if it matches the claim's property value
	if self.conf.propertyValue then
		matches = self.conf:snakEqualsValue(claim.mainsnak, self.conf.propertyValue)
	else
		matches = true
	end
	
	-- if any qualifier values were given, check if each matches one of the claim's qualifier values
	for i, v in pairs(self.conf.qualifierIDsAndValues) do
		matches = (matches and self.conf:qualifierMatches(claim, i, v))
	end
	
	-- check if the claim's rank and time period match
	rankPos = convertRank(claim.rank)
	matches = (matches and self.conf:rankMatches(rankPos) and self.conf:timeMatches(claim))
	
	-- if only claims with references must be returned, check if this one has any
	if self.conf.sourcedOnly then
		matches = (matches and self:isSourced(claim))  -- prefetches and caches references
	end
	
	return matches, rankPos
end

function State:out()
	local result  -- collection of arrays with value objects
	local valuesArray  -- array with value objects
	local sep = nil  -- value object
	local out = {}  -- array with value objects
	
	local function walk(formatTable, result)
		local valuesArray = {}  -- array with value objects
		
		for i, v in pairs(formatTable.req) do
			if not result[i] or not result[i][1] then
				-- we've got no result for a parameter that is required on this level,
				-- so skip this level (and its children) by returning an empty result
				return {}
			end
		end
		
		for i, v in ipairs(formatTable) do
			if v.param then
				valuesArray = mergeArrays(valuesArray, result[v.str])
			elseif v.str ~= "" then
				valuesArray[#valuesArray + 1] = {v.str}
			end
			
			if v.child then
				valuesArray = mergeArrays(valuesArray, walk(v.child, result))
			end
		end
		
		return valuesArray
	end
	
	-- iterate through the results from back to front, so that we know when to add separators
	for i = #self.results, 1, -1 do
		result = self.results[i]
		
		-- if there is already some output, then add the separators
		if #out > 0 then
			sep = self.separator[1]  -- fixed separator
			result[parameters.separator] = {self.movSeparator[1]}  -- movable separator
		else
			sep = nil
			result[parameters.separator] = {self.puncMark[1]}  -- optional punctuation mark
		end
		
		valuesArray = walk(self.parsedFormat, result)
		
		if #valuesArray > 0 then
			if sep then
				valuesArray[#valuesArray + 1] = sep
			end
			
			out = mergeArrays(valuesArray, out)
		end
	end
	
	-- reset state before next iteration
	self.results = {}
	
	return out
end

-- level 1 hook
function State:getProperty(claim)
	local value = {self.conf:getValue(claim.mainsnak, self.rawValue, self.linked, self.shortName)}  -- create one value object
	
	if #value > 0 then
		return {value}  -- wrap the value object in an array and return it
	else
		return {}  -- return empty array if there was no value
	end
end

-- level 1 hook
function State:getQualifiers(claim, param)
	local qualifiers
	
	if claim.qualifiers then qualifiers = claim.qualifiers[self.conf.qualifierIDs[param]] end
	if qualifiers then
		-- iterate through claim's qualifier statements to collect their values;
		-- return array with multiple value objects
		return self.conf.states[param]:iterate(qualifiers, {[parameters.general] = hookNames[parameters.qualifier.."\\d"][2], count = 1})  -- pass qualifier state with level 2 hook
	else
		return {}  -- return empty array
	end
end

-- level 2 hook
function State:getQualifier(snak)
	local value = {self.conf:getValue(snak, self.rawValue, self.linked, self.shortName)}  -- create one value object
	
	if #value > 0 then
		return {value}  -- wrap the value object in an array and return it
	else
		return {}  -- return empty array if there was no value
	end
end

-- level 1 hook
function State:getAllQualifiers(claim, param, result, hooks)
	local out = {}  -- array with value objects
	local sep = self.conf.separators["sep"..parameters.qualifier][1]  -- value object
	
	-- iterate through the output of the separate "qualifier(s)" commands
	for i = 1, self.conf.states.qualifiersCount do
		
		-- if a hook has not been called yet, call it now
		if not result[parameters.qualifier..i] then
			self:callHook(parameters.qualifier..i, hooks, claim, result)
		end
		
		-- if there is output for this particular "qualifier(s)" command, then add it
		if result[parameters.qualifier..i] and result[parameters.qualifier..i][1] then
			
			-- if there is already some output, then add the separator
			if #out > 0 and sep then
				out[#out + 1] = sep
			end
			
			out = mergeArrays(out, result[parameters.qualifier..i])
		end
	end
	
	return out
end

-- level 1 hook
function State:getReferences(claim)
	if self.conf.prefetchedRefs then
		-- return references that have been prefetched by isSourced
		return self.conf.prefetchedRefs
	end
	
	if claim.references then
		-- iterate through claim's reference statements to collect their values;
		-- return array with multiple value objects
		return self.conf.states[parameters.reference]:iterate(claim.references, {[parameters.general] = hookNames[parameters.reference][2], count = 1})  -- pass reference state with level 2 hook
	else
		return {}  -- return empty array
	end
end

-- level 2 hook
-- logic determined based on https://www.wikidata.org/wiki/Help:Sources
function State:getReference(statement)
	local snakValue, lang, property, url, title
	local value = ""
	local ref = {}
	local params = {}
	local leadParams = {}
	local authors = {}
	local numDetails = 0
	
	if statement.snaks then
		-- don't include "imported from" that has been added by a bot
		if statement.snaks[aliasesP.importedFrom] then
			statement.snaks[aliasesP.importedFrom] = nil
		end
		
		for i in pairs(statement.snaks) do
			numDetails = numDetails + 1
		end
		
		-- use the general template for citing web references if both URL and title are present
		if statement.snaks[aliasesP.referenceURL] and statement.snaks[aliasesP.title] and i18n['cite']['cite-web'] and i18n['cite']['cite-web'] ~= "" then
			params[i18n['cite']['url']]   = self.conf:getValue(statement.snaks[aliasesP.referenceURL][1])
			params[i18n['cite']['title']] = self.conf:getValue(statement.snaks[aliasesP.title][1], false, false, false, true)  -- anyLang = true
			
			if statement.snaks[aliasesP.publicationDate] then params[i18n['cite']['date']]         = self.conf:getValue(statement.snaks[aliasesP.publicationDate][1])                  end
			if statement.snaks[aliasesP.retrieved]       then params[i18n['cite']['access-date']]  = self.conf:getValue(statement.snaks[aliasesP.retrieved][1])                        end
			if statement.snaks[aliasesP.archiveURL]      then params[i18n['cite']['archive-url']]  = self.conf:getValue(statement.snaks[aliasesP.archiveURL][1])                       end
			if statement.snaks[aliasesP.archiveDate]     then params[i18n['cite']['archive-date']] = self.conf:getValue(statement.snaks[aliasesP.archiveDate][1])                      end
			if statement.snaks[aliasesP.publisher]       then params[i18n['cite']['publisher']]    = self.conf:getValue(statement.snaks[aliasesP.publisher][1], false, self.linked)    end  -- link = true/false
			if statement.snaks[aliasesP.quote]           then params[i18n['cite']['quote']]        = self.conf:getValue(statement.snaks[aliasesP.quote][1], false, false, false, true) end  -- anyLang = true
			
			if statement.snaks[aliasesP.author] then
				params[i18n['cite']['author']] = self.conf:getValue(statement.snaks[aliasesP.author][1], false, self.linked)  -- link = true/false
				
				for i = 2, #statement.snaks[aliasesP.author] do
					params[i18n['cite']['author']..i] = self.conf:getValue(statement.snaks[aliasesP.author][i], false, self.linked)  -- link = true/false
				end
			end
			
			if statement.snaks[aliasesP.language] then
				snakValue = self.conf:getValue(statement.snaks[aliasesP.language][1], false, self.linked)  -- link = true/false
				
				if self.conf.langName ~= snakValue then
					params[i18n['cite']['language']] = snakValue
				end
			end
			
			-- if this module is being substituted then build a regular template call, otherwise expand the template
			if mw.isSubsting() then
				for i, v in pairs(params) do
					value = value .. "|" .. i .. "=" .. v
				end
				
				value = "{{" .. i18n['cite']['cite-web'] .. value .. "}}"
			else
				value = mw.getCurrentFrame():expandTemplate{title=i18n['cite']['cite-web'], args=params}
			end
		elseif statement.snaks[aliasesP.statedIn] and numDetails == 1 and i18n['cite']['cite-q'] and i18n['cite']['cite-q'] ~= "" then
			value = self.conf:getValue(statement.snaks[aliasesP.statedIn][1], true)  -- raw = true
			
			if mw.isSubsting() then
				value = "{{" .. i18n['cite']['cite-q'] .. "|" .. value .. "}}"
			else
				value = mw.getCurrentFrame():expandTemplate{title=i18n['cite']['cite-q'], args={value}}
			end
		else
			-- if no general template for citing web references was defined but URL and title are present, add these together
			if statement.snaks[aliasesP.referenceURL] and statement.snaks[aliasesP.title] then
				url   = self.conf:getValue(statement.snaks[aliasesP.referenceURL][1])
				title = self.conf:getValue(statement.snaks[aliasesP.title][1], false, false, false, true)  -- anyLang = true
				
				leadParams[#leadParams + 1] = "[" .. url .. " " .. title .. "]"
				
				-- set to nil so that they won't be added a second time
				statement.snaks[aliasesP.referenceURL] = nil
				statement.snaks[aliasesP.title] = nil
			end
			
			for i, v in pairs(statement.snaks) do
				property = getLabel(i)
				
				if property ~= "" then
					if i == aliasesP.author then
						for j, w in ipairs(v) do
							authors[#authors + 1] = self.conf:getValue(w, false, self.linked)  -- link = true/false
						end
						
						snakValue = table.concat(authors, " & ")
					else
						snakValue, lang = self.conf:getValue(v[1], false, self.linked or (i == aliasesP.statedIn) or (i == aliasesP.referenceURL), false, true)  -- link = true/false, anyLang = true
						
						if lang and lang ~= self.conf.langCode then
							snakValue = "''" .. snakValue .. "'' (" .. mw.language.fetchLanguageName(lang, self.conf.langCode) .. ")"
						end
					end
					
					if i == aliasesP.referenceURL or i == aliasesP.statedIn then
						leadParams[#leadParams + 1] = snakValue
					elseif i ~= aliasesP.language or self.conf.langName ~= snakValue then
						params[#params + 1] = property .. ": " .. snakValue
					end
				end
			end
			
			value = table.concat(leadParams, "; ")
			params = table.concat(params, "; ")
			
			if params ~= "" then
				if value ~= "" then
					value = value .. "; "
				end
				value = value .. params
			end
			
			if value ~= "" then
				value = value .. "."
			end
		end
		
		if value ~= "" then
			ref = {value}  -- create one value object
			
			if not self.rawValue then
				-- this should become a <ref> tag, so safe the reference's hash for later
				ref.refHash = statement.hash
			end
			
			ref = {ref}  -- wrap the value object in an array
		end
	end
	
	return ref
end

function State:callHook(param, hooks, statement, result)
	local valuesArray, refHash
	
	-- call a parameter's hook if it has been defined and if it has not been called before
	if not result[param] and hooks[param] then
		valuesArray = self[hooks[param]](self, statement, param, result, hooks)  -- array with value objects
		
		-- add to the result
		if #valuesArray > 0 then
			result[param] = valuesArray
			result.count = result.count + 1
		else
			result[param] = {}  -- an empty array to indicate that we've tried this hook already
			return true  -- miss == true
		end
	end
	
	return false
end

-- iterate through claims, claim's qualifiers or claim's references to collect values
function State:iterate(statements, hooks, matchHook)
	matchHook = matchHook or alwaysTrue
	
	local matches = false
	local rankPos = nil
	local result, gotRequired
	
	for i, v in ipairs(statements) do
		-- rankPos will be nil for non-claim statements (e.g. qualifiers, references, etc.)
		matches, rankPos = matchHook(self, v)
		
		if matches then
			result = {count = 0}  -- collection of arrays with value objects
			
			local function walk(formatTable)
				local miss
				
				for i2, v2 in pairs(formatTable.req) do
					-- call a hook, adding its return value to the result
					miss = self:callHook(i2, hooks, v, result)
					
					if miss then
						-- we miss a required value for this level, so return false
						return false
					end
					
					if result.count == hooks.count then
						-- we're done if all hooks have been called;
						-- returning at this point breaks the loop
						return true
					end
				end
				
				for i2, v2 in ipairs(formatTable) do
					if result.count == hooks.count then
						-- we're done if all hooks have been called;
						-- returning at this point prevents further childs from being processed
						return true
					end
					
					if v2.child then
						walk(v2.child)
					end
				end
				
				return true
			end
			gotRequired = walk(self.parsedFormat)
			
			-- only append the result if we got values for all required parameters on the root level
			if gotRequired then
				-- if we have a rankPos (only with matchHook() for complete claims), then update the foundRank
				if rankPos and self.conf.foundRank > rankPos then
					self.conf.foundRank = rankPos
				end
				
				-- append the result
				self.results[#self.results + 1] = result
				
				-- break if we only need a single value
				if self.singleValue then
					break
				end
			end
		end
	end
	
	return self:out()
end

function p.property(frame)
	loadSubmodules(frame)
	return p._property(copyTable(frame.args))
end

function p._property(args)
	loadSubmodules()
	return execCommand(args, "property")
end

function p.properties(frame)
	loadSubmodules(frame)
	return p._properties(copyTable(frame.args))
end

function p._properties(args)
	loadSubmodules()
	return execCommand(args, "properties")
end

function p.qualifier(frame)
	loadSubmodules(frame)
	return p._qualifier(copyTable(frame.args))
end

function p._qualifier(args)
	loadSubmodules()
	return execCommand(args, "qualifier")
end

function p.qualifiers(frame)
	loadSubmodules(frame)
	return p._qualifiers(copyTable(frame.args))
end

function p._qualifiers(args)
	loadSubmodules()
	return execCommand(args, "qualifiers")
end

function p.reference(frame)
	loadSubmodules(frame)
	return p._reference(copyTable(frame.args))
end

function p._reference(args)
	loadSubmodules()
	return execCommand(args, "reference")
end

function p.references(frame)
	loadSubmodules(frame)
	return p._references(copyTable(frame.args))
end

function p._references(args)
	loadSubmodules()
	return execCommand(args, "references")
end

function execCommand(args, funcName)
	_ = Config.new()
	_:processFlagOrCommand(funcName)  -- process first command (== function name)
	
	local parsedFormat, formatParams, claims, sep
	local hooks = {count = 0}
	
	local nextArg = args[1]
	local nextIndex = 2
	
	-- process flags and commands
	while _:processFlagOrCommand(nextArg) do
		nextArg = args[nextIndex]
		nextIndex = nextIndex + 1
	end
	
	if nextArg then
		nextArg = mw.text.trim(nextArg)
	else
		nextArg = ""
	end
	
	-- check for optional entity ID of either item or property
	if nextArg:sub(1,1):upper() == "Q" then
		_.entity = mw.wikibase.getEntity(nextArg)  -- entity ID of an item given
		_.propertyID = mw.text.trim(args[nextIndex] or "")  -- property ID
		nextIndex = nextIndex + 1
	elseif nextArg:sub(1,9):lower() == "property:" then
		nextArg = replaceAlias(mw.text.trim(nextArg:sub(10)))
		_.entity = mw.wikibase.getEntity(nextArg)  -- entity ID of a property given
		_.propertyID = mw.text.trim(args[nextIndex] or "")  -- property ID
		nextIndex = nextIndex + 1
	else
		_.entity = mw.wikibase.getEntity()  -- no entity ID given, use item connected to current page
		_.propertyID = nextArg  -- property ID
	end
	
	-- check if given property ID is an alias
	_.propertyID = replaceAlias(_.propertyID):upper()
	
	if _.states.qualifiersCount > 0 then
		-- do further processing if "qualifier(s)" command was given
		
		if #args - nextIndex + 1 > _.states.qualifiersCount then
			-- claim ID or literal value has been given
			
			_.propertyValue = mw.text.trim(args[nextIndex])
			nextIndex = nextIndex + 1
		end
		
		for i = 1, _.states.qualifiersCount do
			nextArg = mw.text.trim(args[nextIndex] or "")  -- is a qualifierID
			nextIndex = nextIndex + 1
			
			-- check if given qualifier ID is an alias and add it
			_.qualifierIDs[parameters.qualifier..i] = replaceAlias(nextArg):upper()
		end
	elseif _.states[parameters.reference] then
		-- do further processing if "reference(s)" command was given
		
		nextArg = args[nextIndex]  -- claim ID or literal value (possibly nil)
		nextIndex = nextIndex + 1
		
		if nextArg then
			_.propertyValue = mw.text.trim(nextArg)
		end
	end
	
	-- check for special property value 'somevalue' or 'novalue'
	if _.propertyValue then
		_.propertyValue = replaceSpecialChars(_.propertyValue)
		
		if _.propertyValue ~= "" and mw.text.trim(_.propertyValue) == "" then
			_.propertyValue = " "  -- single space represents 'somevalue', whereas empty string represents 'novalue'
		else
			_.propertyValue = mw.text.trim(_.propertyValue)
		end
	end
	
	-- parse the desired format, or choose an appropriate format
	if args["format"] then
		parsedFormat, formatParams = parseFormat(args["format"])
	elseif _.states.qualifiersCount > 0 then  -- "qualifier(s)" command given
		if _.states[parameters.property] then  -- "propert(y|ies)" command given
			parsedFormat, formatParams = parseFormat(formats.propertyWithQualifier)
		else
			parsedFormat, formatParams = parseFormat(formats.qualifier)
		end
	elseif _.states[parameters.property] then  -- "propert(y|ies)" command given
		parsedFormat, formatParams = parseFormat(formats.property)
	else  -- "reference(s)" command given
		parsedFormat, formatParams = parseFormat(formats.reference)
	end
	
	-- if a "qualifier(s)" command and no "propert(y|ies)" command has been given, make the movable separator a semicolon
	if _.states.qualifiersCount > 0 and not _.states[parameters.property] then
		_.separators["sep"..parameters.separator][1] = {";"}
	end
	
	-- if only "reference(s)" has been given, set the default separator to none (except when raw)
	if _.states[parameters.reference] and not _.states[parameters.property] and _.states.qualifiersCount == 0
	   and not _.states[parameters.reference].rawValue then
		_.separators["sep"][1] = nil
	end
	
	-- if exactly one "qualifier(s)" command has been given, make "sep%q" point to "sep%q1" to make them equivalent;
	-- must come BEFORE overriding the separator values
	if _.states.qualifiersCount == 1 then
		_.separators["sep"..parameters.qualifier] = _.separators["sep"..parameters.qualifier.."1"]
	end
	
	-- process overridden separator values;
	-- must come AFTER parsing the formats
	for i, v in pairs(_.separators) do
		if args[i] then
			sep = replaceSpecialChars(args[i])
			
			if sep ~= "" then
				_.separators[i][1] = {sep}
			else
				_.separators[i][1] = nil
			end
		end
	end
	
	-- make sure that at least one required parameter has been defined
	if not next(parsedFormat.req) then
		error(missingRequiredParameterError())
	end
	
	-- make sure that the separator parameter "%s" is not amongst the required parameters
	if parsedFormat.req[parameters.separator] then
		error(extraRequiredParameterError(parameters.separator))
	end
	
	-- define the hooks that should be called (getProperty, getQualifiers, getReferences);
	-- only define a hook if both its command ("propert(y|ies)", "reference(s)", "qualifier(s)") and its parameter ("%p", "%r", "%q1", "%q2", "%q3") have been given
	for i, v in pairs(_.states) do
		-- e.g. 'formatParams["%q1"] or formatParams["%q"]' to define hook even if "%q1" was not defined to be able to build a complete value for "%q"
		if formatParams[i] or formatParams[i:sub(1, 2)] then
			hooks[i] = getHookName(i, 1)
			hooks.count = hooks.count + 1
		end
	end
	
	-- the "%q" parameter is not attached to a state, but is a collection of the results of multiple states (attached to "%q1", "%q2", "%q3", ...);
	-- so if this parameter is given then this hook must be defined separately, but only if at least one "qualifier(s)" command has been given
	if formatParams[parameters.qualifier] and _.states.qualifiersCount > 0 then
		hooks[parameters.qualifier] = getHookName(parameters.qualifier, 1)
		hooks.count = hooks.count + 1
	end
	
	-- create a state for "properties" if it doesn't exist yet, which will be used as a base configuration for each claim iteration;
	-- must come AFTER defining the hooks
	if not _.states[parameters.property] then
		_.states[parameters.property] = State.new(_)
		
		-- if the "single" flag has been given then this state should be equivalent to "property" (singular)
		if _.singleClaim then
			_.states[parameters.property].singleValue = true
		end
	end
	
	-- if the "sourced" flag has been given then create a state for "reference" if it doesn't exist yet, using default values,
	-- which must exist in order to be able to determine if a claim has any references;
	-- must come AFTER defining the hooks
	if _.sourcedOnly and not _.states[parameters.reference] then
		_:processFlagOrCommand("reference")  -- use singular "reference" to minimize overhead
	end
	
	-- set the parsed format and the separators (and optional punctuation mark)
	_.states[parameters.property].parsedFormat = parsedFormat
	_.states[parameters.property].separator = _.separators["sep"]
	_.states[parameters.property].movSeparator = _.separators["sep"..parameters.separator]
	_.states[parameters.property].puncMark = _.separators["punc"]
	
	-- process qualifier matching values, analogous to _.propertyValue
	for i, v in pairs(args) do
		i = tostring(i)
		
		if i:match('^[Pp]%d+$') or aliasesP[i] then
			v = replaceSpecialChars(v)
			
			-- check for special qualifier value 'somevalue'
			if v ~= "" and mw.text.trim(v) == "" then
				v = " "  -- single space represents 'somevalue'
			end
			
			_.qualifierIDsAndValues[replaceAlias(i):upper()] = v
		end
	end
	
	if _.entity and _.entity.claims then claims = _.entity.claims[_.propertyID] end
	if claims then
		-- first sort the claims on rank to pre-define the order of output (preferred first, then normal, then deprecated)
		claims = sortOnRank(claims)
		
		-- then iterate through the claims to collect values
		return concatValues(_.states[parameters.property]:iterate(claims, hooks, State.claimMatches))  -- pass property state with level 1 hooks and matchHook
	else
		return ""
	end
end

function p.label(frame)
	loadSubmodules(frame)
	return p._label(copyTable(frame.args))
end

function p._label(args, _)
	_ = _ or Config.new()
	_.curState = State.new(_)
	
	loadSubmodules()
	
	local ID = nil
	local label = nil
	local title = nil
	local prefix= ""
	local lang
	
	local nextArg = args[1]
	local nextIndex = 2
	
	while _:processFlag(nextArg) do
		nextArg = args[nextIndex]
		nextIndex = nextIndex + 1
	end
	
	if nextArg then
		ID = mw.text.trim(nextArg)
		
		if ID == "" then
			ID = nil
		elseif ID:sub(1,9):lower() == "property:" then
			ID = mw.text.trim(ID:sub(10))
		end
	end
	
	if ID then
		ID = replaceAlias(ID):upper()
		
		-- check if this is a valid ID, and if the number is not larger than max int (to prevent error)
		if not ID:match('^[QP]%d+$') or tonumber(ID:match('%d+')) > 2147483647 then
			return ""
		end
	end
	
	if not _.curState.rawValue or _.pageTitle then
		if not _.pageTitle then
			-- (1) try short name
			if _.curState.shortName then
				if ID and ID:sub(1,1) == "P" then
					label = getShortName("Property:" .. ID)
				else
					label = getShortName(ID)
				end
				
				if label == "" then
					label = nil
				end
			end
			
			-- (2) try label
			if not label then
				label, lang = mw.wikibase.getLabelWithLang(ID)
				
				-- don't allow language fallback
				if lang ~= _.langCode then
					label = nil
				end
			end
		end
		
		-- (3) try sitelink/title
		if not label or _.curState.linked then
			if not ID then
				title = mw.title.getCurrentTitle().prefixedText
			elseif ID:sub(1,1) == "Q" then
				title = mw.wikibase.sitelink(ID)
			elseif label then
				-- properties have no sitelink, 'title = ID' should only be set
				-- if there is a 'label' already and if it needs to be linked;
				-- otherwise, it would be 'label = title == ID' even if '_.pageTitle' is set
				title = ID
				prefix = "d:Property:"
			end
			
			label = label or title
		end
	end
	
	-- (4) try entity ID (i.e. raw value)
	if not label and not _.pageTitle then
		if not ID then
			label = mw.wikibase.getEntityIdForCurrentPage()
		elseif mw.wikibase.getEntity(ID) then
			label = ID
			
			if ID:sub(1,1) == "P" then
				prefix = "Property:"
			end
		end
		
		prefix = "d:" .. prefix
		
		title = label
	end
	
	if not label then
		label = ""
	end
	
	-- add optional link
	if _.curState.linked and title then
		label = buildWikilink(prefix .. title, label)
	end
	
	return label
end

function p.title(frame)
	loadSubmodules(frame)
	return p._title(copyTable(frame.args))
end

function p._title(args, _)
	_ = _ or Config.new()
	_.pageTitle = true
	-- loadSubmodules() will already be called by _label()
	return p._label(args, _)
end

-- main function that is supposed to be used by wrapper templates
function p.main(frame)
	local f, args, i, v
	
	loadSubmodules(frame)
	
	-- get the parent frame to take the arguments that were passed to the wrapper template
	frame = frame:getParent() or frame
	
	if not frame.args[1] then
		error(i18n["errors"]["no-function-specified"])
	end
	
	f = mw.text.trim(frame.args[1])
	
	if f == "main" then
		error(i18n["errors"]["main-called-twice"])
	end
	
	assert(p["_"..f], applyStringParams(i18n['errors']['no-such-function'], f))
	
	-- copy arguments from immutable to mutable table
	args = copyTable(frame.args)
	
	-- remove the function name from the list
	table.remove(args, 1)
	
	return p["_"..f](args)
end

return p