Added a Makefile, removed the build script and had to modify the function names for either the scanner or parser so they didn't collide. Refactoring should be the next step here.

.gitignore

@@ -1,2 +1,3 @@
 clox
 *.lox
+obj/

Makefile

@@ -0,0 +1,13 @@
+CC = gcc
+SOURCEFILES := $(wildcard *.c)
+
+SOURCE := $(wildcard *.c)
+
+$(SOURCE:.c=.o): $(SOURCE)
+	@mkdir -p obj
+	$(CC) $^ -o obj/clox
+
+.PHONY: clean
+
+clean:
+	rm -r obj

build.sh

@@ -1 +0,0 @@
-gcc -o clox lox.c scanner.c parser.c

scanner.c

@@ -35,13 +35,13 @@ int current; //points to the character currently being considered.
 int length;
 int line = 1;
 
-const char* Advance(void);
-int IsAtEnd(void);
+const char* SAdvance(void);
+int SIsAtEnd(void);
 void ScanToken(TokenList*);
 TokenList* CreateList(void);
 int AddTokenToList(TokenType, const char*, int, TokenList*);
-int Match(char);
-char Peek(void);
+int SMatch(char);
+char SPeek(void);
 char PeekNext(void);
 void ParseString(TokenList *);
 void ParseNumber(TokenList *);
@@ -59,7 +59,7 @@ TokenList* ScanTokens(const char* source) {
 
     TokenList* tokens = CreateList();
 
-    while(!IsAtEnd()) {
+    while(!SIsAtEnd()) {
         start = current;
         ScanToken(tokens);
     }
@@ -137,7 +137,7 @@ int AddTokenToList(TokenType type, const char* lexeme, int length, TokenList* to
 }
 
 void ScanToken(TokenList* tokens) {
-    const char* c = Advance();
+    const char* c = SAdvance();
     
     switch (*c) {
     case '(':
@@ -171,24 +171,24 @@ void ScanToken(TokenList* tokens) {
         AddTokenToList(Star, c, 1, tokens);
         break;
     case '!':
-        if (Match('=')) AddTokenToList(Bang_Equal, "!=", 2, tokens);
+        if (SMatch('=')) AddTokenToList(Bang_Equal, "!=", 2, tokens);
         else AddTokenToList(Bang, c, 1, tokens);
         break;
     case '=':
-        if (Match('=')) AddTokenToList(Equal_Equal, "==", 2, tokens);
+        if (SMatch('=')) AddTokenToList(Equal_Equal, "==", 2, tokens);
         else AddTokenToList(Equal, c, 1, tokens);
         break;
     case '<':
-        if (Match('=')) AddTokenToList(Less_Equal, "<=", 2, tokens);
+        if (SMatch('=')) AddTokenToList(Less_Equal, "<=", 2, tokens);
         else AddTokenToList(Less, c, 1, tokens);
         break;
     case '>':
-        if (Match('=')) AddTokenToList(Greater_Equal, ">=", 2, tokens);
+        if (SMatch('=')) AddTokenToList(Greater_Equal, ">=", 2, tokens);
         else AddTokenToList(Greater, c, 1, tokens);
         break;
     case '/':
-        if (Match('/')) {
-            while(Peek() != '\n' && !IsAtEnd()) Advance();
+        if (SMatch('/')) {
+            while(SPeek() != '\n' && !SIsAtEnd()) SAdvance();
         }
         else {
             AddTokenToList(Slash, c, 1, tokens);
@@ -218,16 +218,16 @@ void ScanToken(TokenList* tokens) {
     }
 }
 
-int IsAtEnd() {
+int SIsAtEnd() {
     return current >= length;
 }
 
-const char* Advance() {
+const char* SAdvance() {
     return &source_code[current++];
 }
 
-int Match(char expected) {
-    if (IsAtEnd()) return 0;
+int SMatch(char expected) {
+    if (SIsAtEnd()) return 0;
     if (source_code[current] != expected) return 0;
 
     current++;
@@ -235,8 +235,8 @@ int Match(char expected) {
     return 1;
 }
 
-char Peek() {
-    if (IsAtEnd()) return '\0';
+char SPeek() {
+    if (SIsAtEnd()) return '\0';
 
     return source_code[current];
 }
@@ -244,28 +244,28 @@ char Peek() {
 void ParseString(TokenList *list) {
     start = current;    //The start is currently pointing to the first double quote so we need to move it
                         //to the next (first character) of the string literal.
-    while(Peek() != '"' && !IsAtEnd()) {
-        if (Peek() == '\n') line++;
-        Advance();
+    while(SPeek() != '"' && !SIsAtEnd()) {
+        if (SPeek() == '\n') line++;
+        SAdvance();
     }
 
-    if (IsAtEnd()) {
+    if (SIsAtEnd()) {
         fprintf(stderr, "Unterminated string.\n");
         return;
     }
 
     AddTokenToList(String, &source_code[start], current - start, list);
 
-    Advance(); // The closing ".
+    SAdvance(); // The closing ".
 }
 
 void ParseNumber(TokenList* list) {
-    while(isdigit(Peek())) Advance();
+    while(isdigit(SPeek())) SAdvance();
 
-    if (Peek() == '.' && isdigit(PeekNext())) {
-        Advance();
+    if (SPeek() == '.' && isdigit(PeekNext())) {
+        SAdvance();
 
-        while(isdigit(Peek())) Advance();
+        while(isdigit(SPeek())) SAdvance();
     }
 
     AddTokenToList(Number, &source_code[start], current - start, list);
@@ -278,7 +278,7 @@ char PeekNext() {
 }
 
 void ParseIdentifier(TokenList * list) {
-    while(IsAlpha(Peek())) Advance();
+    while(IsAlpha(SPeek())) SAdvance();
 
     char* lexeme = calloc(sizeof(char*), (current - start + 1));