shithub: libmujs

Info  •  Files  •  Log  •  Branches

Add js_itoa for faster conversion of unsigned int to string.

--- a/jsarray.c

+++ b/jsarray.c

@@ -20,29 +20,25 @@

 int js_hasindex(js_State *J, int idx, unsigned int i)

 {

 	char buf[32];

-	sprintf(buf, "%u", i);

-	return js_hasproperty(J, idx, buf);

+	return js_hasproperty(J, idx, js_itoa(buf, i));

 }

 void js_getindex(js_State *J, int idx, unsigned int i)

 {

 	char buf[32];

-	sprintf(buf, "%u", i);

-	js_getproperty(J, idx, buf);

+	js_getproperty(J, idx, js_itoa(buf, i));

 }

 void js_setindex(js_State *J, int idx, unsigned int i)

 {

 	char buf[32];

-	sprintf(buf, "%u", i);

-	js_setproperty(J, idx, buf);

+	js_setproperty(J, idx, js_itoa(buf, i));

 }

 void js_delindex(js_State *J, int idx, unsigned int i)

 {

 	char buf[32];

-	sprintf(buf, "%u", i);

-	js_delproperty(J, idx, buf);

+	js_delproperty(J, idx, js_itoa(buf, i));

 }

 static void jsB_new_Array(js_State *J)

--- a/json.c

+++ b/json.c

@@ -183,7 +183,7 @@

 static void fmtarray(js_State *J, js_Buffer **sb, const char *gap, int level)

 {

 	unsigned int n, k;

-	char buf[40];

+	char buf[32];

 	n = js_getlength(J, -1);

@@ -191,7 +191,7 @@

 	for (k = 0; k < n; ++k) {

 		if (k) js_putc(J, sb, ',');

 		if (gap) fmtindent(J, sb, gap, level + 1);

-		sprintf(buf, "%u", k);

+		js_itoa(buf, k);

 		js_getproperty(J, -1, buf);

 		if (!fmtvalue(J, sb, js_intern(J, buf), gap, level + 1))

 			js_puts(J, sb, "null");

--- a/jsproperty.c

+++ b/jsproperty.c

@@ -269,7 +269,7 @@

 		if (obj->type == JS_CSTRING) {

 			for (k = 0; k < obj->u.s.length; ++k) {

-				sprintf(buf, "%u", k);

+				js_itoa(buf, k);

 				if (!itshadow(J, top, obj, buf)) {

 					ITADD(js_intern(J, buf));

 				}

@@ -327,8 +327,7 @@

 			}

 		} else {

 			for (k = newlen; k < obj->u.a.length; ++k) {

-				sprintf(buf, "%u", k);

-				jsV_delproperty(J, obj, buf);

+				jsV_delproperty(J, obj, js_itoa(buf, k));

 			}

 		}

 	}

--- a/jsvalue.c

+++ b/jsvalue.c

@@ -134,6 +134,22 @@

 	}

 }

+const char *js_itoa(char *out, unsigned int a)

+{

+	char buf[32], *s = out;

+	unsigned int i = 0;

+	while (a) {

+		buf[i++] = (a % 10) + '0';

+		a /= 10;

+	}

+	if (i == 0)

+		buf[i++] = '0';

+	while (i > 0)

+		*s++ = buf[--i];

+	*s = 0;

+	return out;

+}

+

 double js_stringtofloat(const char *s, char **ep)

 {

 	char *end;

--- a/jsvalue.h

+++ b/jsvalue.h

@@ -140,6 +140,7 @@

 js_Object *jsV_toobject(js_State *J, const js_Value *v);

 js_Value jsV_toprimitive(js_State *J, const js_Value *v, int preferred);

+const char *js_itoa(char buf[32], unsigned int a);

 double js_stringtofloat(const char *s, char **ep);

 double jsV_numbertointeger(double n);

 int jsV_numbertoint32(double n);