1 files changed, 186 insertions, 0 deletions
diff --git a/docs/tool/Modules/NaturalDocs/SymbolTable/File.pm b/docs/tool/Modules/NaturalDocs/SymbolTable/File.pm
new file mode 100644
index 00000000..71f93645
--- /dev/null
+++ b/docs/tool/Modules/NaturalDocs/SymbolTable/File.pm
@@ -0,0 +1,186 @@
+###############################################################################
+#
+#   Package: NaturalDocs::SymbolTable::File
+#
+###############################################################################
+#
+#   A class representing a file, keeping track of what symbols and references are defined in it.
+#
+###############################################################################
+
+# This file is part of Natural Docs, which is Copyright (C) 2003-2008 Greg Valure
+# Natural Docs is licensed under the GPL
+
+use strict;
+use integer;
+
+package NaturalDocs::SymbolTable::File;
+
+
+###############################################################################
+# Group: Implementation
+
+#
+#   Constants: Members
+#
+#   The class is implemented as a blessed arrayref.  The following constants are its members.
+#
+#       SYMBOLS       - An existence hashref of the <SymbolStrings> it defines.
+#       REFERENCES  - An existence hashref of the <ReferenceStrings> in the file.
+#
+
+# DEPENDENCY: New() depends on the order of these constants.  If they change, New() has to be updated.
+use constant SYMBOLS => 0;
+use constant REFERENCES => 1;
+
+
+###############################################################################
+# Group: Modification Functions
+
+
+#
+#   Function: New
+#
+#   Creates and returns a new object.
+#
+sub New
+    {
+    my $package = shift;
+
+    # Let's make it safe, since normally you can pass values to New.  Having them just be ignored would be an obscure error.
+    if (scalar @_)
+        {  die "You can't pass values to NaturalDocs::SymbolTable::File->New()\n";  };
+
+    # DEPENDENCY: This code depends on the order of the member constants.
+    my $object = [ { }, { } ];
+    bless $object, $package;
+
+    return $object;
+    };
+
+
+#
+#   Function: AddSymbol
+#
+#   Adds a <SymbolString> definition.
+#
+#   Parameters:
+#
+#       symbol - The <SymbolString> being added.
+#
+sub AddSymbol #(symbol)
+    {
+    my ($self, $symbol) = @_;
+    $self->[SYMBOLS]{$symbol} = 1;
+    };
+
+
+#
+#   Function: DeleteSymbol
+#
+#   Removes a <SymbolString> definition.
+#
+#   Parameters:
+#
+#       symbol - The <SymbolString> to delete.
+#
+sub DeleteSymbol #(symbol)
+    {
+    my ($self, $symbol) = @_;
+    delete $self->[SYMBOLS]{$symbol};
+    };
+
+
+#
+#   Function: AddReference
+#
+#   Adds a reference definition.
+#
+#   Parameters:
+#
+#       referenceString - The <ReferenceString> being added.
+#
+sub AddReference #(referenceString)
+    {
+    my ($self, $referenceString) = @_;
+    $self->[REFERENCES]{$referenceString} = 1;
+    };
+
+
+#
+#   Function: DeleteReference
+#
+#   Removes a reference definition.
+#
+#   Parameters:
+#
+#       referenceString - The <ReferenceString> to delete.
+#
+sub DeleteReference #(referenceString)
+    {
+    my ($self, $referenceString) = @_;
+    delete $self->[REFERENCES]{$referenceString};
+    };
+
+
+
+###############################################################################
+# Group: Information Functions
+
+
+#
+#   Function: HasAnything
+#
+#   Returns whether the file has any symbol or reference definitions at all.
+#
+sub HasAnything
+    {
+    return (scalar keys %{$_[0]->[SYMBOLS]} || scalar keys %{$_[0]->[REFERENCES]});
+    };
+
+#
+#   Function: Symbols
+#
+#   Returns an array of all the <SymbolStrings> defined in this file.  If none, returns an empty array.
+#
+sub Symbols
+    {
+    return keys %{$_[0]->[SYMBOLS]};
+    };
+
+
+#
+#   Function: References
+#
+#   Returns an array of all the <ReferenceStrings> defined in this file.  If none, returns an empty array.
+#
+sub References
+    {
+    return keys %{$_[0]->[REFERENCES]};
+    };
+
+
+#
+#   Function: DefinesSymbol
+#
+#   Returns whether the file defines the passed <SymbolString> or not.
+#
+sub DefinesSymbol #(symbol)
+    {
+    my ($self, $symbol) = @_;
+    return exists $self->[SYMBOLS]{$symbol};
+    };
+
+
+#
+#   Function: DefinesReference
+#
+#   Returns whether the file defines the passed <ReferenceString> or not.
+#
+sub DefinesReference #(referenceString)
+    {
+    my ($self, $referenceString) = @_;
+    return exists $self->[REFERENCES]{$referenceString};
+    };
+
+1;