intern symbol names

Symbols in the source file are still limited in
length because the rest of the code assumes that
strings always fit in NString bytes.

Regardless, there is already a benefit because
comparing/copying symbol names does not require
using strcmp()/strcpy() anymore.

1 files changed, 8 insertions, 5 deletions

diff --git a/all.h b/all.h
index 1e9476d..b9ac9b2 100644
--- a/all.h
+++ b/all.h
@@ -275,7 +275,7 @@ struct Alias {
 	#define astack(t) ((t) & 1)
 	} type;
 	Ref base;
-	char label[NString];
+	uint32_t label;
 	int64_t offset;
 	Alias *slot;
 };
@@ -312,7 +312,7 @@ struct Con {
 		CBits,
 		CAddr,
 	} type;
-	char label[NString];
+	uint32_t label;
 	union {
 		int64_t i;
 		double d;
@@ -411,19 +411,22 @@ typedef enum {
 
 extern Typ *typ;
 extern Ins insb[NIns], *curi;
+uint32_t hash(char *);
 void die_(char *, char *, ...) __attribute__((noreturn));
 void *emalloc(size_t);
 void *alloc(size_t);
 void freeall(void);
+void *vnew(ulong, size_t, Pool);
+void vfree(void *);
+void vgrow(void *, ulong);
+uint32_t intern(char *);
+char *str(uint32_t);
 int argcls(Ins *, int);
 int iscmp(int, int *, int *);
 void emit(int, int, Ref, Ref, Ref);
 void emiti(Ins);
 void idup(Ins **, Ins *, ulong);
 Ins *icpy(Ins *, Ins *, ulong);
-void *vnew(ulong, size_t, Pool);
-void vfree(void *);
-void vgrow(void *, ulong);
 int cmpop(int);
 int cmpneg(int);
 int clsmerge(short *, short);