pp: Add support for macro definition and expansion

The token pasting operator `##` still needs to be implemented.

1 files changed, 9 insertions, 0 deletions

diff --git a/cc.h b/cc.h
index d938ade..85f739a 100644
--- a/cc.h
+++ b/cc.h
@@ -121,6 +121,8 @@ struct location {
 
 struct token {
 	enum tokenkind kind;
+	/* whether or not the token is ineligible for expansion */
+	_Bool hide;
 	/* whether or not the token was preceeded by a space */
 	_Bool space;
 	struct location loc;
@@ -384,6 +386,13 @@ void scan(struct token *);
 
 /* preprocessor */
 
+enum ppflags {
+	/* preserve newlines in preprocessor output */
+	PPNEWLINE   = 1 << 0,
+};
+
+extern enum ppflags ppflags;
+
 void ppinit(void);
 
 void next(void);