Imported Upstream version 0.26.0

components/compiler/locals.cpp

@@ -0,0 +1,110 @@
+
+#include "locals.hpp"
+
+#include <cassert>
+#include <stdexcept>
+#include <algorithm>
+#include <ostream>
+#include <iterator>
+
+namespace Compiler
+{
+    const std::vector<std::string>& Locals::get (char type) const
+    {
+        switch (type)
+        {
+            case 's': return mShorts;
+            case 'l': return mLongs;
+            case 'f': return mFloats;        
+        }
+        
+        throw std::logic_error ("unknown variable type");
+    }
+    
+    int Locals::searchIndex (char type, const std::string& name) const
+    {
+        const std::vector<std::string>& collection = get (type);
+        
+        std::vector<std::string>::const_iterator iter =
+            std::find (collection.begin(), collection.end(), name);
+            
+        if (iter==collection.end())
+            return -1;
+            
+        return iter-collection.begin();
+    }
+    
+    bool Locals::search (char type, const std::string& name) const
+    {        
+        return searchIndex (type, name)!=-1;
+    }
+
+    std::vector<std::string>& Locals::get (char type)
+    {
+        switch (type)
+        {
+            case 's': return mShorts;
+            case 'l': return mLongs;
+            case 'f': return mFloats;        
+        }
+        
+        throw std::logic_error ("unknown variable type");    
+    }
+
+    char Locals::getType (const std::string& name) const
+    {
+        if (search ('s', name))
+            return 's';
+
+        if (search ('l', name))
+            return 'l';
+        
+        if (search ('f', name))
+            return 'f';
+        
+        return ' ';
+    }
+    
+    int Locals::getIndex (const std::string& name) const
+    {
+        int index = searchIndex ('s', name);
+        
+        if (index!=-1)
+            return index;
+        
+        index = searchIndex ('l', name);
+
+        if (index!=-1)
+            return index;
+
+        return searchIndex ('f', name);        
+    }
+    
+    void Locals::write (std::ostream& localFile) const
+    {
+        localFile
+            << get ('s').size() << ' '
+            << get ('l').size() << ' '
+            << get ('f').size() << std::endl;
+            
+        std::copy (get ('s').begin(), get ('s').end(),
+            std::ostream_iterator<std::string> (localFile, " "));
+        std::copy (get ('l').begin(), get ('l').end(),
+            std::ostream_iterator<std::string> (localFile, " "));
+        std::copy (get ('f').begin(), get ('f').end(),
+            std::ostream_iterator<std::string> (localFile, " "));
+    }
+    
+    void Locals::declare (char type, const std::string& name)
+    {
+        get (type).push_back (name);
+    }
+    
+    void Locals::clear()
+    {
+        get ('s').clear();
+        get ('l').clear();
+        get ('f').clear();
+    }
+}
+