Class: RDoc::CrossReference
Relationships & Source Files | |
Inherits: | Object |
Defined in: | lib/rdoc/cross_reference.rb |
Overview
CrossReference
is a reusable way to create cross references for names.
Constant Summary
-
ALL_CROSSREF_REGEXP =
Version of CROSSREF_REGEXP used when
--hyperlink-all
is specified./ (?:^|[\s()]) ( (?: # A::B::C.meth #{CLASS_REGEXP_STR}(?:[.#]|::)#{METHOD_REGEXP_STR} # A::B::C | #{CLASS_REGEXP_STR}(?=[@\s).?!,;<\000]|\z) # Stand-alone method | \\?#{METHOD_REGEXP_STR} # Things that look like filenames | (?:\.\.\/)*[-\/\w][_\/.][-\w\/.] # Things that have markup suppressed | \\[^\s<] ) # labels for headings (?:@[\w%-])? )/x
-
CLASS_REGEXP_STR =
Regular expression to match class references
-
There can be a ‘\’ in front of text to suppress the cross-reference
-
There can be a ‘::’ in front of class names to reference from the top-level namespace.
-
The method can be followed by parenthesis (not recommended)
'\\\\?((?:\:{2})?[A-Z]\w*(?:\:\:\w+)*)'
-
-
CROSSREF_REGEXP =
Regular expressions matching text that should potentially have cross-reference links generated are passed to add_regexp_handling. Note that these expressions are meant to pick up text for which cross-references have been suppressed, since the suppression characters are removed by the code that is triggered.
/(?:^|[\s()]) ( (?: # A::B::C.meth #{CLASS_REGEXP_STR}(?:[.#]|::)#{METHOD_REGEXP_STR} # A::B::C # The stuff after CLASS_REGEXP_STR is a # nasty hack. CLASS_REGEXP_STR unfortunately matches # words like dog and cat (these are legal "class" # names in Fortran 95). When a word is flagged as a # potential cross-reference, limitations in the markup # engine suppress other processing, such as typesetting. # This is particularly noticeable for contractions. # In order that words like "can't" not # be flagged as potential cross-references, only # flag potential class cross-references if the character # after the cross-reference is a space, sentence # punctuation, tag start character, or attribute # marker. | #{CLASS_REGEXP_STR}(?=[@\s).?!,;<\000]|\z) # Stand-alone method (preceded by a #) | \\?\##{METHOD_REGEXP_STR} # Stand-alone method (preceded by ::) | ::#{METHOD_REGEXP_STR} # Things that look like filenames # The key thing is that there must be at least # one special character (period, slash, or # underscore). | (?:\.\.\/)*[-\/\w][_\/.][-\w\/.] # Things that have markup suppressed # Don't process things like '\<' in \<tt>, though. # TODO: including < is a hack, not very satisfying. | \\[^\s<] ) # labels for headings (?:@[\w%-](?:\.[\w|%-]+)?)? )/x
-
METHOD_ARGS_REGEXP_STR =
Regular expression to match method arguments.
/(?:\((?:#{METHOD_ARG_REGEXP_STR}(?:,\s*#{METHOD_ARG_REGEXP_STR})*)?\))?/.source
-
METHOD_ARG_REGEXP_STR =
Regular expression to match a single method argument.
'[\w.*/=<>-]'
-
METHOD_REGEXP_STR =
Regular expression to match method references.
See CLASS_REGEXP_STR
/( (?!\d)[\w#{RDoc::Markup::AttributeManager::PROTECT_ATTR}]+[!?=]?| %|=(?:==?|~)|![=~]|\[\]=?|<(?:<|=>?)?|>[>=]?|[-+!]@?|\*\*?|[\/%\`|&^~] )#{METHOD_ARGS_REGEXP_STR}/.source.delete("\n ").freeze
Class Method Summary
-
.new(context) ⇒ CrossReference
constructor
Allows cross-references to be created based on the given
context
(RDoc::Context).
Instance Attribute Summary
-
#seen
rw
Hash of references that have been looked-up to their replacements.
Instance Method Summary
-
#resolve(name, text)
Returns a reference to
name
. -
#resolve_method(name)
Returns a method reference to
name
.
Constructor Details
.new(context) ⇒ CrossReference
Allows cross-references to be created based on the given context
(RDoc::Context).
# File 'lib/rdoc/cross_reference.rb', line 127
def initialize context @context = context @store = context.store @seen = {} end
Instance Attribute Details
#seen (rw)
Hash of references that have been looked-up to their replacements
# File 'lib/rdoc/cross_reference.rb', line 121
attr_accessor :seen
Instance Method Details
#resolve(name, text)
Returns a reference to name
.
If the reference is found and name
is not documented text
will be returned. If name
is escaped name
is returned. If name
is not found text
is returned.
# File 'lib/rdoc/cross_reference.rb', line 190
def resolve name, text return @seen[name] if @seen.include? name ref = case name when /^\\(#{CLASS_REGEXP_STR})$/o then @context.find_symbol $1 else @context.find_symbol name end ref = resolve_method name unless ref # Try a page name ref = @store.page name if not ref and name =~ /^[\w.]+$/ ref = nil if RDoc::Alias === ref # external alias, can't link to it out = if name == '\\' then name elsif name =~ /^\\/ then # we remove the \ only in front of what we know: # other backslashes are treated later, only outside of <tt> ref ? $' : name elsif ref then if ref.display? then ref else text end else text end @seen[name] = out out end
#resolve_method(name)
Returns a method reference to name
.
# File 'lib/rdoc/cross_reference.rb', line 137
def resolve_method name ref = nil if /#{CLASS_REGEXP_STR}([.#]|::)#{METHOD_REGEXP_STR}/o =~ name then type = $2 if '.' == type # will find either #method or ::method method = $3 else method = "#{type}#{$3}" end container = @context.find_symbol_module($1) elsif /^([.#]|::)#{METHOD_REGEXP_STR}/o =~ name then type = $1 if '.' == type method = $2 else method = "#{type}#{$2}" end container = @context else type = nil container = nil end if container then unless RDoc::TopLevel === container then if '.' == type then if 'new' == method then # AnyClassName.new will be class method ref = container.find_local_symbol method ref = container.find_ancestor_local_symbol method unless ref else ref = container.find_local_symbol "::#{method}" ref = container.find_ancestor_local_symbol "::#{method}" unless ref ref = container.find_local_symbol "##{method}" unless ref ref = container.find_ancestor_local_symbol "##{method}" unless ref end else ref = container.find_local_symbol method ref = container.find_ancestor_local_symbol method unless ref end end end ref end