Added the methods to get all the identifiers used in a translation unit.

shared/cplusplus/Control.cpp

@@ -511,6 +511,12 @@ Identifier *Control::findOrInsertIdentifier(const char *chars)
     return findOrInsertIdentifier(chars, length);
 }
 
+Control::IdentifierIterator Control::firstIdentifier() const
+{ return d->identifiers.begin(); }
+
+Control::IdentifierIterator Control::lastIdentifier() const
+{ return d->identifiers.end(); }
+
 StringLiteral *Control::findOrInsertStringLiteral(const char *chars, unsigned size)
 { return d->stringLiterals.findOrInsertLiteral(chars, size); }
 

shared/cplusplus/Control.h

@@ -151,6 +151,11 @@ public:
     Identifier *findOrInsertIdentifier(const char *chars, unsigned size);
     Identifier *findOrInsertIdentifier(const char *chars);
 
+    typedef const Identifier *const *IdentifierIterator;
+
+    IdentifierIterator firstIdentifier() const;
+    IdentifierIterator lastIdentifier() const;
+
     StringLiteral *findOrInsertStringLiteral(const char *chars, unsigned size);
     StringLiteral *findOrInsertStringLiteral(const char *chars);