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src/Location.h

@@ -2,23 +2,34 @@
 #include <string>
 #include <memory>
 
+/* Struct to represent a location in a file. */
 struct Location
 {
     int line;
     int column;
     std::string fname;
 
+    /* The location at which this location was imported, for error traces in imported files. */
     std::shared_ptr<Location> parent = nullptr;
 
+    /* Creates a Location with the given parameters. */
     Location(int ln, int col, std::string file);
+
     ~Location();
 
+    /* Returns a string of the format FILE:LINE:COL. */
     std::string to_string() const;
+    /* Returns a string of the format (FILE:LINE:COL). */
     std::string to_parenthesized_string() const;
+
+    /* Advance to the next column in the file. */
     void advance();
+
+    /* Advance to the next line if provided a newline. */
     void pos_from_char(const char& character);
 
     void operator=(const Location& other);
 
+    /* Copies the other location into this one. */
     void copy(const Location& other);
 };

src/Normalizer.h

@@ -1,10 +1,14 @@
-// Normalizer: take token stream and remove NULL tokens + convert > and = into >= and similar
 #pragma once
 #include "Token.h"
 #include "Lexer.h" // for TokenStream
 
-
+/* Namespace to normalize a TokenStream. */
 namespace Normalizer
 {
+    /* Some tokens are difficult for the Lexer to parse right, or maybe I'm just lazy. 
+    Anyways, this function transforms > and = tokens next to each other into a single >=, which has a different meaning, etc...
+    For example: = + = : ==, < + = : <=...
+    
+    It also takes blank tokens and removes them. */
     TokenStream normalize(const TokenStream& input);
 }

src/replace.h

@@ -1,4 +1,5 @@
 #pragma once
 #include <string>
 
+/* Simple function to replace a substring in a string. */
 bool replace(std::string& str, const std::string& from, const std::string& to);