Implement array access expressions

Rakefile

@@ -38,10 +38,47 @@ end
 
 desc 'Convert previous stage language into the current stage language'
 task :convert do
-  File.open('boot/stage18/cl.elna', 'w') do |current_stage|
-    File.readlines('boot/stage17/cl.elna').each do |line|
+  File.open('boot/stage19/cl.elna', 'w') do |current_stage|
+    File.readlines('boot/stage18/cl.elna').each do |line|
+        current_stage << "\tf();\n" if line.include? "if _compile() then"
         current_stage << line
+        if line == "type\n"
+          current_stage << <<-RECORD
+	Pair = record
+		first: Word;
+		second: Word
+	end;
+	R1 = record
+		field1: Word;
+		field2: [4]Word;
+		field3: Word
+	end;
+	R2 = record
+		field1: Word;
+		field3: Word;
+		field4: Word;
+		field5: Word;
+		field6: Word;
+		field2: Word
+	end;
+
+          RECORD
+        end
     end
+    current_stage << <<~EPILOGUE
+
+      proc f();
+      var
+      	v1: Word;
+      	r: ^R1;
+      begin
+      	r := malloc(#size(R1));
+
+      	v1 := r^.field2[2];
+
+      	printf("# %i\\n\\0", v1)
+      end;
+    EPILOGUE
   end
 end
 
@@ -105,7 +142,10 @@ file 'build/build.ninja' => ['build'] do |t|
         build #{valid_stage}/cl: #{link} #{valid_stage}/cl.o
       NINJA
     end
-    f << "\ndefault build/valid/stage18/cl\n"
+    f << <<~NINJA
+
+      default build/valid/#{STAGES.last}/cl
+    NINJA
   end
 end