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compiler.cpp

@@ -1,33 +1,41 @@
 #include "global.h"
 
-#include <tuple>
+#include <string>
 
-class tokens {
-	public:
-		enum type {
-			comment,
-			variable,
-			integer,
-			string,
-			construct
-		};
+// derived from https://llvm.org/docs/tutorial/MyFirstLanguageFrontend/LangImpl01.html
 
-		type tokenType;
-		char* tokenValue;
-	
-	tokens( type aTokenType, char* aTokenValue ) {
-		tokenType = aTokenType;
-		tokenValue = aTokenValue;
-	}
+// any non tokens get to be returned as ascii val from 0 to -255
+enum token {
+	eof,      // End of File
+	external, // C stuff
+	variable, // Name of a variable
+	integer,  // integer ._.
+	string,   // string O_O
 };
 
+std::string identifierStr; // filled if string
+long NumVal;               // filled if integer
 
-tokens getTok( char code[] ) {
-	if( code[0] == '#' )
-		return tokens(tokens::comment, "");
-	return tokens(tokens::comment, "");
+int getTok() {
+	int lastChar = ' ';
+
+	// skip le whitespace
+	while( isspace(lastChar) )
+		lastChar = getchar();
+	
+	if( isalpha(lastChar) ) { // identifier: [a-zA-Z][a-zA-Z0-9]*
+		identifierStr = lastChar;
+		while( isalnum((lastChar = getchar())) )
+			identifierStr += lastChar;
+
+		if( identifierStr == "" )
+			return external;
+		
+		return variable;
+	}
 }
 
 void compiler( char filename[] ) {
-	std::cout << getTok(filename).tokenType << ' ' << getTok(filename).tokenValue;
-}
+	getTok();
+	
+}

main.cpp

@@ -14,7 +14,7 @@ int main( int argc, char *argv[] ) {
 		help();
 	} else {
 		LOG(argv[1])
-		compiler("# a aa ");
+		compiler(argv[1]);
 	}
 
 	return 0;