From b268bf59a6efbca460fef5bbd56f514df570a0bf Mon Sep 17 00:00:00 2001
From: Leo Tenenbaum <pommicket@gmail.com>
Date: Fri, 20 Dec 2019 23:44:05 -0500
Subject: switched to different ID system for identgs

---
 identifiers.c | 7 +++++--
 types.h       | 3 ++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/identifiers.c b/identifiers.c
index ef277e9..10aa82d 100644
--- a/identifiers.c
+++ b/identifiers.c
@@ -41,7 +41,7 @@ static Identifier ident_new(Identifiers *ids, Identifier parent, unsigned char i
 	if (parent)
 		tree->depth = (uint16_t)(parent->depth + 1);
 	tree->index_in_parent = index_in_parent;
-	tree->id = block_arr_len(&ids->trees);
+	tree->id = 0;
 	return tree;
 }
 
@@ -49,6 +49,7 @@ static Identifier ident_new(Identifiers *ids, Identifier parent, unsigned char i
 static void idents_create(Identifiers *ids) {
 	block_arr_create(&ids->trees, 10, sizeof(IdentTree)); /* blocks of 1 << 10 = 1024 */
 	ids->root = ident_new(ids, NULL, 0); /* create root tree */
+	ids->nidents = 0;
 }
 
 #if CHAR_MIN < 0
@@ -70,6 +71,8 @@ static Identifier ident_insert(Identifiers *ids, char **s) {
 	IdentTree *tree = ids->root;
 	while (1) {
 		if (!isident(**s)) {
+			if (!tree->id)
+				tree->id = ++ids->nidents;
 			return tree;
 		}
 		int c = ident_char_to_uchar(**s);
@@ -97,7 +100,7 @@ static void fprint_ident(FILE *out, Identifier id) {
 	    i = i->parent->parent; /* to go up one character, we need to go to the grandparent */
 		++chars;
 	}
-	printf("%lu:",(unsigned long)id->id);
+	printf("%lu-",(unsigned long)id->id);
 	char *s = malloc(chars + 1);
 	char *p = s + chars;
 	i = id;
diff --git a/types.h b/types.h
index 015ec9a..91bc88b 100644
--- a/types.h
+++ b/types.h
@@ -173,7 +173,7 @@ typedef struct IdentTree {
 	/* zero value is an empty trie */
 	uint16_t depth;
 	unsigned char index_in_parent; /* index of this in .parent.children */
-	U64 id; /* unique integer associated with this identifier - also index in Identifiers.trees */
+	U64 id; /* 0 if there's no actual identifier here, otherwise unique positive integer associated with this identifier */
 	struct IdentTree *parent;
 	struct IdentTree *children[TREE_NCHILDREN];
     IdentDecl *decls; /* array of declarations of this identifier */
@@ -184,6 +184,7 @@ typedef IdentTree *Identifier;
 typedef struct Identifiers {
 	BlockArr trees;
 	IdentTree *root;
+	U64 nidents;
 } Identifiers;
 
 typedef enum {
-- 
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