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523 lines
19 KiB
Perl
523 lines
19 KiB
Perl
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###############################################################################
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#
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# Class: NaturalDocs::SymbolTable::IndexElement
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#
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###############################################################################
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#
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# A class representing part of an indexed symbol.
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#
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###############################################################################
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# This file is part of Natural Docs, which is Copyright (C) 2003-2008 Greg Valure
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# Natural Docs is licensed under the GPL
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use Tie::RefHash;
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use strict;
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use integer;
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package NaturalDocs::SymbolTable::IndexElement;
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#
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# Topic: How IndexElements Work
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#
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# This is a little tricky, so make sure you understand this. Indexes are sorted by symbol, then packages, then file. If there is only
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# one package for a symbol, or one file definition for a package/symbol, they are added inline to the entry. However, if there are
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# multiple packages or files, the function for it returns an arrayref of IndexElements instead. Which members are defined and
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# undefined should follow common sense. For example, if a symbol is defined in multiple packages, the symbol's IndexElement
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# will not define <File()>, <Type()>, or <Prototype()>; those will be defined in child elements. Similarly, the child elements will
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# not define <Symbol()> since it's redundant.
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#
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# Diagrams may be clearer. If a member isn't listed for an element, it isn't defined.
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#
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# A symbol that only has one package and file:
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# > [Element]
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# > - Symbol
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# > - Package
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# > - File
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# > - Type
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# > - Prototype
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# > - Summary
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#
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# A symbol that is defined by multiple packages, each with only one file:
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# > [Element]
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# > - Symbol
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# > - Package
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# > [Element]
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# > - Package
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# > - File
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# > - Type
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# > - Prototype
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# > - Summary
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# > [Element]
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# > - ...
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#
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# A symbol that is defined by one package, but has multiple files
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# > [Element]
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# > - Symbol
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# > - Package
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# > - File
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# > [Element]
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# > - File
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# > - Type
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# > - Protype
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# > - Summary
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# > [Element]
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# > - ...
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#
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# A symbol that is defined by multiple packages which have multiple files:
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# > [Element]
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# > - Symbol
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# > - Package
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# > [Element]
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# > - Package
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# > - File
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# > [Element]
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# > - File
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# > - Type
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# > - Prototype
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# > - Summary
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# > [Element]
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# > - ...
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# > [Element]
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# > - ...
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#
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# Why is it done this way?:
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#
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# Because it makes it easier to generate nice indexes since all the splitting and combining is done for you. If a symbol
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# has only one package, you just want to link to it, you don't want to break out a subindex for just one package. However, if
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# it has multiple package, you do want the subindex and to link to each one individually. Use <HasMultiplePackages()> and
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# <HasMultipleFiles()> to determine whether you need to add a subindex for it.
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#
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#
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# Combining Properties:
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#
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# All IndexElements also have combining properties set.
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#
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# CombinedType - The general <TopicType> of the entry. Conflicts combine into <TOPIC_GENERAL>.
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# PackageSeparator - The package separator symbol of the entry. Conflicts combine into a dot.
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#
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# So if an IndexElement only has one definition, <CombinedType()> is the same as the <TopicType> and <PackageSeparator()>
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# is that of the definition's language. If other definitions are added and they have the same properties, the combined properties
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# will remain the same. However, if they're different, they switch values as noted above.
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#
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#
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# Sortable Symbol:
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#
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# <SortableSymbol()> is a pseudo-combining property. There were a few options for dealing with multiple languages defining
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# the same symbol but stripping different prefixes off it, but ultimately I decided to go with whatever the language does that
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# has the most definitions. There's not likely to be many conflicts here in the real world; probably the only thing would be
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# defining it in a text file and forgetting to specify the prefixes to strip there too. So this works.
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#
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# Ties are broken pretty much randomly, except that text files always lose if its one of the options.
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#
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# It's a pseudo-combining property because it's done after the IndexElements are all filled in and only stored in the top-level
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# ones.
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#
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###############################################################################
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# Group: Implementation
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#
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# Constants: Members
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#
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# The class is implemented as a blessed arrayref. The following constants are its members.
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#
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# SYMBOL - The <SymbolString> without the package portion.
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# PACKAGE - The package <SymbolString>. Will be a package <SymbolString>, undef for global, or an arrayref of
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# <NaturalDocs::SymbolTable::IndexElement> objects if multiple packages define the symbol.
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# FILE - The <FileName> the package/symbol is defined in. Will be the file name or an arrayref of
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# <NaturalDocs::SymbolTable::IndexElements> if multiple files define the package/symbol.
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# TYPE - The package/symbol/file <TopicType>.
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# PROTOTYPE - The package/symbol/file prototype, or undef if not applicable.
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# SUMMARY - The package/symbol/file summary, or undef if not applicable.
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# COMBINED_TYPE - The combined <TopicType> of the element.
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# PACKAGE_SEPARATOR - The combined package separator symbol of the element.
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# SORTABLE_SYMBOL - The sortable symbol as a text string.
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# IGNORED_PREFIX - The part of the symbol that was stripped off to make the sortable symbol.
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#
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use NaturalDocs::DefineMembers 'SYMBOL', 'Symbol()',
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'PACKAGE', 'Package()',
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'FILE', 'File()',
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'TYPE', 'Type()',
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'PROTOTYPE', 'Prototype()',
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'SUMMARY', 'Summary()',
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'COMBINED_TYPE', 'CombinedType()',
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'PACKAGE_SEPARATOR', 'PackageSeparator()',
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'SORTABLE_SYMBOL', 'SortableSymbol()',
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'IGNORED_PREFIX', 'IgnoredPrefix()';
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# DEPENDENCY: New() depends on the order of these constants and that there is no inheritance..
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###############################################################################
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# Group: Modification Functions
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#
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# Function: New
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#
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# Returns a new object.
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#
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# This should only be used for creating an entirely new symbol. You should *not* pass arrayrefs as package or file parameters
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# if you are calling this externally. Use <Merge()> instead.
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#
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# Parameters:
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#
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# symbol - The <SymbolString> without the package portion.
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# package - The package <SymbolString>, or undef for global.
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# file - The symbol's definition file.
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# type - The symbol's <TopicType>.
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# prototype - The symbol's prototype, if applicable.
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# summary - The symbol's summary, if applicable.
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#
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# Optional Parameters:
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#
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# These parameters don't need to be specified. You should ignore them when calling this externally.
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#
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# combinedType - The symbol's combined <TopicType>.
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# packageSeparator - The symbol's combined package separator symbol.
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#
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sub New #(symbol, package, file, type, prototype, summary, combinedType, packageSeparator)
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{
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# DEPENDENCY: This depends on the parameter list being in the same order as the constants.
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my $self = shift;
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my $object = [ @_ ];
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bless $object, $self;
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if (!defined $object->[COMBINED_TYPE])
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{ $object->[COMBINED_TYPE] = $object->[TYPE]; };
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if (!defined $object->[PACKAGE_SEPARATOR])
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{
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if ($object->[TYPE] eq ::TOPIC_FILE())
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{ $object->[PACKAGE_SEPARATOR] = '.'; }
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else
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{
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$object->[PACKAGE_SEPARATOR] = NaturalDocs::Languages->LanguageOf($object->[FILE])->PackageSeparator();
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};
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};
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return $object;
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};
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#
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# Function: Merge
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#
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# Adds another definition of the same symbol. Perhaps it has a different package or defining file.
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#
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# Parameters:
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#
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# package - The package <SymbolString>, or undef for global.
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# file - The symbol's definition file.
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# type - The symbol's <TopicType>.
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# prototype - The symbol's protoype if applicable.
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# summary - The symbol's summary if applicable.
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#
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sub Merge #(package, file, type, prototype, summary)
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{
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my ($self, $package, $file, $type, $prototype, $summary) = @_;
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# If there's only one package...
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if (!$self->HasMultiplePackages())
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{
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# If there's one package and it's the same as the new one...
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if ($package eq $self->Package())
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{
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$self->MergeFile($file, $type, $prototype, $summary);
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}
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# If there's one package and the new one is different...
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else
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{
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my $selfDefinition = NaturalDocs::SymbolTable::IndexElement->New(undef, $self->Package(), $self->File(),
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$self->Type(), $self->Prototype(),
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$self->Summary(), $self->CombinedType(),
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$self->PackageSeparator());
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my $newDefinition = NaturalDocs::SymbolTable::IndexElement->New(undef, $package, $file, $type, $prototype,
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$summary);
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$self->[PACKAGE] = [ $selfDefinition, $newDefinition ];
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$self->[FILE] = undef;
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$self->[TYPE] = undef;
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$self->[PROTOTYPE] = undef;
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$self->[SUMMARY] = undef;
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if ($newDefinition->Type() ne $self->CombinedType())
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{ $self->[COMBINED_TYPE] = ::TOPIC_GENERAL(); };
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if ($newDefinition->PackageSeparator() ne $self->PackageSeparator())
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{ $self->[PACKAGE_SEPARATOR] = '.'; };
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};
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}
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# If there's more than one package...
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else
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{
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# See if the new package is one of them.
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my $selfPackages = $self->Package();
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my $matchingPackage;
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foreach my $testPackage (@$selfPackages)
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{
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if ($package eq $testPackage->Package())
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{
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$testPackage->MergeFile($file, $type, $prototype, $summary);;
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return;
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};
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};
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my $newDefinition = NaturalDocs::SymbolTable::IndexElement->New(undef, $package, $file, $type, $prototype,
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$summary);
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push @{$self->[PACKAGE]}, $newDefinition;
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if ($newDefinition->Type() ne $self->CombinedType())
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{ $self->[COMBINED_TYPE] = ::TOPIC_GENERAL(); };
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if ($newDefinition->PackageSeparator() ne $self->PackageSeparator())
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{ $self->[PACKAGE_SEPARATOR] = '.'; };
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};
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};
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#
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# Function: Sort
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#
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# Sorts the package and file lists of the symbol.
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#
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sub Sort
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{
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my $self = shift;
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if ($self->HasMultipleFiles())
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{
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@{$self->[FILE]} = sort { ::StringCompare($a->File(), $b->File()) } @{$self->File()};
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}
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elsif ($self->HasMultiplePackages())
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{
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@{$self->[PACKAGE]} = sort { ::StringCompare( $a->Package(), $b->Package()) } @{$self->[PACKAGE]};
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foreach my $packageElement ( @{$self->[PACKAGE]} )
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{
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if ($packageElement->HasMultipleFiles())
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{ $packageElement->Sort(); };
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};
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};
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};
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#
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# Function: MakeSortableSymbol
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#
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# Generates <SortableSymbol()> and <IgnoredPrefix()>. Should only be called after everything is merged.
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#
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sub MakeSortableSymbol
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{
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my $self = shift;
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my $finalLanguage;
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if ($self->HasMultiplePackages() || $self->HasMultipleFiles())
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{
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# Collect all the files that define this symbol.
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my @files;
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if ($self->HasMultipleFiles())
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{
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my $fileElements = $self->File();
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foreach my $fileElement (@$fileElements)
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{ push @files, $fileElement->File(); };
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}
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else # HasMultiplePackages
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{
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my $packages = $self->Package();
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foreach my $package (@$packages)
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{
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if ($package->HasMultipleFiles())
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{
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my $fileElements = $package->File();
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foreach my $fileElement (@$fileElements)
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{ push @files, $fileElement->File(); };
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}
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else
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{ push @files, $package->File(); };
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};
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};
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# Determine which language defines it the most.
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# Keys are language objects, values are counts.
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my %languages;
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tie %languages, 'Tie::RefHash';
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foreach my $file (@files)
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{
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my $language = NaturalDocs::Languages->LanguageOf($file);
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if (exists $languages{$language})
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{ $languages{$language}++; }
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else
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{ $languages{$language} = 1; };
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};
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my $topCount = 0;
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my @topLanguages;
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while (my ($language, $count) = each %languages)
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{
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if ($count > $topCount)
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{
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$topCount = $count;
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@topLanguages = ( $language );
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}
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elsif ($count == $topCount)
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{
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push @topLanguages, $language;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
if (scalar @topLanguages == 1)
|
||
|
|
{ $finalLanguage = $topLanguages[0]; }
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if ($topLanguages[0]->Name() ne 'Text File')
|
||
|
|
{ $finalLanguage = $topLanguages[0]; }
|
||
|
|
else
|
||
|
|
{ $finalLanguage = $topLanguages[1]; };
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
else # !hasMultiplePackages && !hasMultipleFiles
|
||
|
|
{ $finalLanguage = NaturalDocs::Languages->LanguageOf($self->File()); };
|
||
|
|
|
||
|
|
my $textSymbol = NaturalDocs::SymbolString->ToText($self->Symbol(), $self->PackageSeparator());
|
||
|
|
my $ignoredPrefixLength = $finalLanguage->IgnoredPrefixLength($textSymbol, $self->CombinedType());
|
||
|
|
|
||
|
|
if ($ignoredPrefixLength)
|
||
|
|
{
|
||
|
|
$self->[IGNORED_PREFIX] = substr($textSymbol, 0, $ignoredPrefixLength);
|
||
|
|
$self->[SORTABLE_SYMBOL] = substr($textSymbol, $ignoredPrefixLength);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{ $self->[SORTABLE_SYMBOL] = $textSymbol; };
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
###############################################################################
|
||
|
|
#
|
||
|
|
# Functions: Information Functions
|
||
|
|
#
|
||
|
|
# Symbol - Returns the <SymbolString> without the package portion.
|
||
|
|
# Package - If <HasMultiplePackages()> is true, returns an arrayref of <NaturalDocs::SymbolTable::IndexElement> objects.
|
||
|
|
# Otherwise returns the package <SymbolString>, or undef if global.
|
||
|
|
# File - If <HasMultipleFiles()> is true, returns an arrayref of <NaturalDocs::SymbolTable::IndexElement> objects. Otherwise
|
||
|
|
# returns the name of the definition file.
|
||
|
|
# Type - Returns the <TopicType> of the package/symbol/file, if applicable.
|
||
|
|
# Prototype - Returns the prototype of the package/symbol/file, if applicable.
|
||
|
|
# Summary - Returns the summary of the package/symbol/file, if applicable.
|
||
|
|
# CombinedType - Returns the combined <TopicType> of the element.
|
||
|
|
# PackageSeparator - Returns the combined package separator symbol of the element.
|
||
|
|
# SortableSymbol - Returns the sortable symbol as a text string. Only available after calling <MakeSortableSymbol()>.
|
||
|
|
# IgnoredPrefix - Returns the part of the symbol that was stripped off to make the <SortableSymbol()>, or undef if none.
|
||
|
|
# Only available after calling <MakeSortableSymbol()>.
|
||
|
|
#
|
||
|
|
|
||
|
|
# Function: HasMultiplePackages
|
||
|
|
# Returns whether <Packages()> is broken out into more elements.
|
||
|
|
sub HasMultiplePackages
|
||
|
|
{ return ref($_[0]->[PACKAGE]); };
|
||
|
|
|
||
|
|
# Function: HasMultipleFiles
|
||
|
|
# Returns whether <File()> is broken out into more elements.
|
||
|
|
sub HasMultipleFiles
|
||
|
|
{ return ref($_[0]->[FILE]); };
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
###############################################################################
|
||
|
|
# Group: Support Functions
|
||
|
|
|
||
|
|
#
|
||
|
|
# Function: MergeFile
|
||
|
|
#
|
||
|
|
# Adds another definition of the same package/symbol. Perhaps the file is different.
|
||
|
|
#
|
||
|
|
# Parameters:
|
||
|
|
#
|
||
|
|
# file - The package/symbol's definition file.
|
||
|
|
# type - The package/symbol's <TopicType>.
|
||
|
|
# prototype - The package/symbol's protoype if applicable.
|
||
|
|
# summary - The package/symbol's summary if applicable.
|
||
|
|
#
|
||
|
|
sub MergeFile #(file, type, prototype, summary)
|
||
|
|
{
|
||
|
|
my ($self, $file, $type, $prototype, $summary) = @_;
|
||
|
|
|
||
|
|
# If there's only one file...
|
||
|
|
if (!$self->HasMultipleFiles())
|
||
|
|
{
|
||
|
|
# If there's one file and it's the different from the new one...
|
||
|
|
if ($file ne $self->File())
|
||
|
|
{
|
||
|
|
my $selfDefinition = NaturalDocs::SymbolTable::IndexElement->New(undef, undef, $self->File(), $self->Type(),
|
||
|
|
$self->Prototype(), $self->Summary(),
|
||
|
|
$self->CombinedType(),
|
||
|
|
$self->PackageSeparator());
|
||
|
|
my $newDefinition = NaturalDocs::SymbolTable::IndexElement->New(undef, undef, $file, $type, $prototype,
|
||
|
|
$summary);
|
||
|
|
|
||
|
|
$self->[FILE] = [ $selfDefinition, $newDefinition ];
|
||
|
|
$self->[TYPE] = undef;
|
||
|
|
$self->[PROTOTYPE] = undef;
|
||
|
|
$self->[SUMMARY] = undef;
|
||
|
|
|
||
|
|
if ($newDefinition->Type() ne $self->CombinedType())
|
||
|
|
{ $self->[COMBINED_TYPE] = ::TOPIC_GENERAL(); };
|
||
|
|
if ($newDefinition->PackageSeparator() ne $self->PackageSeparator())
|
||
|
|
{ $self->[PACKAGE_SEPARATOR] = '.'; };
|
||
|
|
}
|
||
|
|
|
||
|
|
# If the file was the same, just ignore the duplicate in the index.
|
||
|
|
}
|
||
|
|
|
||
|
|
# If there's more than one file...
|
||
|
|
else
|
||
|
|
{
|
||
|
|
# See if the new file is one of them.
|
||
|
|
my $files = $self->File();
|
||
|
|
|
||
|
|
foreach my $testElement (@$files)
|
||
|
|
{
|
||
|
|
if ($testElement->File() eq $file)
|
||
|
|
{
|
||
|
|
# If the new file's already in the index, ignore the duplicate.
|
||
|
|
return;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
my $newDefinition = NaturalDocs::SymbolTable::IndexElement->New(undef, undef, $file, $type, $prototype,
|
||
|
|
$summary);
|
||
|
|
push @{$self->[FILE]}, $newDefinition;
|
||
|
|
|
||
|
|
if ($newDefinition->Type() ne $self->CombinedType())
|
||
|
|
{ $self->[COMBINED_TYPE] = ::TOPIC_GENERAL(); };
|
||
|
|
if ($newDefinition->PackageSeparator() ne $self->PackageSeparator())
|
||
|
|
{ $self->[PACKAGE_SEPARATOR] = '.'; };
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
1;
|