commit - 6e073af25564022293cb488284a0e03794b24480
commit + 6d61db9e6483af40d1790fd1451b58091269958b
blob - aefa2251b7f72c15255a845417eee9d1df9ba636
blob + 5dfb4fedf2d0991829a43293c202e32da8e32509
--- cc/cc1/Makefile
+++ cc/cc1/Makefile
-CFLAGS = -ansi -Wall -Wextra -Wno-comment -O2
+CFLAGS = -ansi -Wall -Wextra -Wno-deprecated-non-prototype -Wno-implicit-int -Wno-comment -O2
all: cc1
blob - 3c64eca78cc6024ea1b05532ac8cf85ffb87551c
blob + 8fceecaa912883c53b4bed96d0e52986e66fbaa3
--- cc/cc1/cc1.c
+++ cc/cc1/cc1.c
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+#define IDENT_LEN 8
+// ERROR HANDLING
+
+int line;
+
+error (msg)
+char *msg;
+{
+ fprintf (stderr, "cc1: %d: error: %s\n", line, msg);
+ return exit (1), -1;
+}
+
+// LEXER
+
+enum {
+ TK_IDENT = 128,
+ TK_EOF,
+};
+
+union {
+ char ident[IDENT_LEN + 1];
+} lval;
+
+int peekd = EOF;
+
+readch (void)
+{
+ int ch = getchar ();
+
+ if (ch == '\n')
+ ++line;
+
+ return ch;
+}
+
+peekch (void)
+{
+ if (peekd != EOF)
+ peekd = readch ();
+
+ return peekd;
+}
+
+nextch (void)
+{
+ int ch;
+
+ if (peekd != EOF) {
+ ch = peekd;
+ peekd = EOF;
+ } else {
+ ch = readch ();
+ }
+
+ return ch;
+}
+
+isname (ch)
+{
+ return isalnum (ch) || ch == '_';
+}
+
+lex (void)
+{
+ size_t i;
+ int ch;
+
+ while (isspace (peekch ()))
+ nextch ();
+
+ ch = peekch ();
+
+ if (isdigit (ch)) {
+ return error ("TODO: integers");
+ } else if (isname (ch)) {
+ for (i = 0; isname (peekch ());) {
+ ch = nextch ();
+ if (i < IDENT_LEN)
+ lval.ident[i++] = ch;
+ }
+ lval.ident[i] = '\0';
+ return TK_IDENT;
+ } else switch (ch) {
+ case '(':
+ case ')':
+ case '{':
+ case '}':
+ return ch;
+ default:
+ return error ("invalid input");
+ }
+}
+
main (void)
{
return 0;
blob - e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
blob + feb71ac63f70bb96e7df4d2fb378017d5893f315
--- cc/cc1/test.c
+++ cc/cc1/test.c
+main ()
+{
+
+}
