Split RGBLINK linkerscript parser functions into their own file

src/asm/actions.cpp

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include "asm/actions.hpp"
 
 #include <stdio.h>

src/asm/lexer.cpp

@@ -595,7 +595,7 @@ static bool isMacroChar(char c) {
 	return c == '@' || c == '#' || c == '<' || (c >= '1' && c <= '9');
 }
 
-// forward declarations for readBracketedMacroArgNum
+// Forward declarations for `readBracketedMacroArgNum`
 static int peek();
 static void shiftChar();
 static int bumpChar();
@@ -795,7 +795,7 @@ int LexerState::peekCharAhead() {
 	return EOF;
 }
 
-// forward declarations for peek
+// Forward declarations for `peek`
 static std::shared_ptr<std::string> readInterpolation(size_t depth);
 
 static int peek() {
@@ -1622,7 +1622,7 @@ static void readCharacter(std::string &str) {
 
 // Lexer core
 
-static Token yylex_SKIP_TO_ENDC(); // forward declaration for yylex_NORMAL
+static Token yylex_SKIP_TO_ENDC(); // Forward declaration for `yylex_NORMAL`
 
 // Must stay in sync with the `switch` in `yylex_NORMAL`!
 static bool isGarbageCharacter(int c) {

src/asm/main.cpp

@@ -14,7 +14,7 @@
 #include "diagnostics.hpp"
 #include "extern/getopt.hpp"
 #include "helpers.hpp"
-#include "parser.hpp"
+#include "parser.hpp" // Generated from parser.y
 #include "version.hpp"
 
 #include "asm/charmap.hpp"

src/asm/parser.y

@@ -2719,7 +2719,7 @@ hl_ind_dec:
 
 %%
 
-/******************** Semantic actions ********************/
+/******************** Error handler ********************/
 
 void yy::parser::error(std::string const &str) {
 	::error("%s", str.c_str());