Rename

[xonotic/gmqcc.git] / code.c

diff --git a/code.c b/code.c
index 0ad8becb8de54bc50c47cb434164bb46a95f2c62..43a34c9de78aec26749824fc03d436b502538c5c 100644 (file)
--- a/code.c
+++ b/code.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2012
+ * Copyright (C) 2012, 2013
  *     Dale Weiler
  *     Wolfgang Bumiller
  *
@@ -33,6 +33,13 @@ char                   *code_chars;
 uint16_t                code_crc;
 uint32_t                code_entfields;
 
+/* This is outrageous! */
+#define QCINT_ENTRY void*
+#define QCINT_TO_HASH_ENTRY(q) ((void*)(uintptr_t)(q))
+#define HASH_ENTRY_TO_QCINT(h) ((qcint)(uintptr_t)(h))
+static ht     code_string_cache;
+static qcint  code_string_cached_empty;
+
 void code_push_statement(prog_section_statement *stmt, int linenum)
 {
     vec_push(code_statements, *stmt);
@@ -46,13 +53,15 @@ void code_pop_statement()
 }
 
 void code_init() {
-    prog_section_function  empty_function  = {0,0,0,0,0,0,0,{0}};
+    prog_section_function  empty_function  = {0,0,0,0,0,0,0,{0,0,0,0,0,0,0,0}};
     prog_section_statement empty_statement = {0,{0},{0},{0}};
     prog_section_def       empty_def       = {0, 0, 0};
     int                    i               = 0;
 
     code_entfields = 0;
 
+    code_string_cache = util_htnew(OPTS_OPTIMIZATION(OPTIM_OVERLAP_STRINGS) ? 0x100 : 1024);
+
     /*
      * The way progs.dat is suppose to work is odd, there needs to be
      * some null (empty) statements, functions, and 28 globals
@@ -67,31 +76,40 @@ void code_init() {
     vec_push(code_fields,     empty_def);
 }
 
+void *code_util_str_htgeth(hash_table_t *ht, const char *key, size_t bin);
 uint32_t code_genstring(const char *str)
 {
-    uint32_t off = vec_size(code_chars);
-    while (*str) {
-        vec_push(code_chars, *str);
-        ++str;
+    uint32_t off;
+    size_t   hash;
+    QCINT_ENTRY existing;
+
+    if (!str)
+        return 0;
+
+    if (!*str) {
+        if (!code_string_cached_empty) {
+            code_string_cached_empty = vec_size(code_chars);
+            vec_push(code_chars, 0);
+        }
+        return code_string_cached_empty;
     }
-    vec_push(code_chars, 0);
-    return off;
-}
 
-uint32_t code_cachedstring(const char *str)
-{
-    size_t s = 0;
-    /* We could implement knuth-morris-pratt or something
-     * and also take substrings, but I'm uncomfortable with
-     * pointing to subparts of strings for the sake of clarity...
-     */
-    while (s < vec_size(code_chars)) {
-        if (!strcmp(str, code_chars + s))
-            return s;
-        while (code_chars[s]) ++s;
-        ++s;
+    if (OPTS_OPTIMIZATION(OPTIM_OVERLAP_STRINGS)) {
+        hash = ((unsigned char*)str)[strlen(str)-1];
+        existing = code_util_str_htgeth(code_string_cache, str, hash);
+    } else {
+        hash = util_hthash(code_string_cache, str);
+        existing = util_htgeth(code_string_cache, str, hash);
     }
-    return code_genstring(str);
+
+    if (existing)
+        return HASH_ENTRY_TO_QCINT(existing);
+
+    off = vec_size(code_chars);
+    vec_upload(code_chars, str, strlen(str)+1);
+
+    util_htseth(code_string_cache, str, hash, QCINT_TO_HASH_ENTRY(off));
+    return off;
 }
 
 qcint code_alloc_field (size_t qcsize)
@@ -119,8 +137,8 @@ bool code_write(const char *filename, const char *lnofile) {
     code_header.strings.offset    = code_header.globals.offset    + (sizeof(int32_t)                * vec_size(code_globals));
     code_header.strings.length    = vec_size(code_chars);
     code_header.version           = 6;
-    if (opts.forcecrc)
-        code_header.crc16         = opts.forced_crc;
+    if (OPTS_OPTION_BOOL(OPTION_FORCECRC))
+        code_header.crc16         = OPTS_OPTION_U16(OPTION_FORCED_CRC);
     else
         code_header.crc16         = code_crc;
     code_header.entfield          = code_entfields;
@@ -151,7 +169,6 @@ bool code_write(const char *filename, const char *lnofile) {
     util_endianswap(code_globals,    vec_size(code_globals),    sizeof(int32_t));
 
     if (lnofile) {
-        uint32_t lnotype = *(unsigned int*)"LNOF";
         uint32_t version = 1;
 
         fp = file_open(lnofile, "wb");
@@ -162,7 +179,7 @@ bool code_write(const char *filename, const char *lnofile) {
         util_endianswap(code_linenums, vec_size(code_linenums), sizeof(code_linenums[0]));
 
 
-        if (file_write(&lnotype,                        sizeof(lnotype),                        1,                       fp) != 1 ||
+        if (file_write("LNOF",                          4,                                      1,                       fp) != 1 ||
             file_write(&version,                        sizeof(version),                        1,                       fp) != 1 ||
             file_write(&code_header.defs.length,        sizeof(code_header.defs.length),        1,                       fp) != 1 ||
             file_write(&code_header.globals.length,     sizeof(code_header.globals.length),     1,                       fp) != 1 ||
@@ -254,6 +271,8 @@ bool code_write(const char *filename, const char *lnofile) {
     vec_free(code_functions);
     vec_free(code_globals);
     vec_free(code_chars);
+    util_htdel(code_string_cache);
+
     file_close(fp);
     return true;
 }