added a placeholder lexer and token struct

Makefile

@@ -5,7 +5,7 @@ RM=rm
 CFLAGS=-Wall -Werror -std=gnu99 -O0 -g
 LIBS=
 
-FILES=build/main.o build/utils/vector.o build/utils/buffer.o
+FILES=build/main.o build/lexer.o build/utils/vector.o build/utils/buffer.o
 OUT=bin/pinky.out
 
 all: $(FILES)
@@ -16,6 +16,10 @@ build/main.o: src/main.c
 	@$(ECHO) "CC\t\t"$<
 	@$(CC) $(CFLAGS) $< -c -o $@ $(LIBS)
 
+build/lexer.o: src/lexer.c
+	@$(ECHO) "CC\t\t"$<
+	@$(CC) $(CFLAGS) $< -c -o $@ $(LIBS)
+
 build/utils/vector.o: src/utils/vector.c
 	@$(ECHO) "CC\t\t"$<
 	@$(CC) $(CFLAGS) $< -c -o $@ $(LIBS)

src/lexer.c

@@ -0,0 +1,20 @@
+#include "lexer.h"
+
+struct lexer
+lexer_create ()
+{
+	struct lexer l = { 0 };
+
+	l.tokens = vector_create ();
+
+	return l;
+}
+
+void
+lexer_free (struct lexer *lexer)
+{
+	if (!lexer)
+		return;
+
+	vector_free (&lexer->tokens);
+}

src/lexer.h

@@ -0,0 +1,14 @@
+#ifndef __LEXER_H
+#define __LEXER_H
+
+#include "utils/vector.h"
+
+struct lexer
+{
+	struct vector tokens;
+};
+
+struct lexer lexer_create ();
+void lexer_free (struct lexer *lexer);
+
+#endif

src/main.c

@@ -1,6 +1,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "utils/buffer.h"
+
+#include "lexer.h"
+
 int
 main (int argc, char **argv)
 {
@@ -10,5 +14,14 @@ main (int argc, char **argv)
 			return EXIT_FAILURE;
 		}
 
+	struct buffer code = buffer_create ();
+	if (!buffer_read (argv[1], &code))
+		return EXIT_FAILURE;
+
+	struct lexer lexer = lexer_create ();
+
+	lexer_free (&lexer);
+	buffer_free (&code);
+
 	return EXIT_SUCCESS;
 }

src/token.h

@@ -0,0 +1,14 @@
+#ifndef __TOKEN_H
+#define __TOKEN_H
+
+enum token_type
+{
+};
+
+struct token
+{
+	enum token_type type;
+	char lexeme[4];
+};
+
+#endif

src/utils/buffer.c

@@ -22,7 +22,7 @@ buffer_create ()
 {
 	struct buffer b = { 0 };
 
-	b.capacity = 16;
+	b.capacity = 4;
 	b.buf = calloc (b.capacity, sizeof (char));
 	if (!b.buf)
 		{
@@ -77,6 +77,41 @@ buffer_get (struct buffer *b)
 	return b->buf;
 }
 
+_Bool
+buffer_read (const char *path, struct buffer *b)
+{
+	if (!path || !b)
+		return 0;
+
+	FILE *fp = fopen (path, "r");
+	if (!fp)
+		{
+			fputs ("buffer_read: cannot open path.", stderr);
+			return 0;
+		}
+
+	fseek (fp, 0, SEEK_END);
+	size_t size = ftell (fp);
+	fseek (fp, 0, SEEK_SET);
+
+	char *buf = malloc (sizeof (char) * size);
+	if (!buf)
+		{
+			fclose (fp);
+			fputs ("buffer_read: cannot allocate memory for temporary buffer.",
+						 stderr);
+			return 0;
+		}
+	fread (buf, size, 1, fp);
+
+	buffer_append (buf, b);
+
+	free (buf);
+	fclose (fp);
+
+	return 1;
+}
+
 void
 buffer_free (struct buffer *b)
 {

src/utils/buffer.h

@@ -14,6 +14,7 @@ struct buffer buffer_create ();
 void buffer_append (const char *s, struct buffer *b);
 void buffer_printf (struct buffer *b, const char *fmt, ...);
 char *buffer_get (struct buffer *b);
+_Bool buffer_read (const char *path, struct buffer *b);
 void buffer_free (struct buffer *b);
 
 #endif

tests/expr.pinky

@@ -0,0 +1,2 @@
+# Evaluate a simple expression
+2 + 3