css: Add gtk_css_number_value_can_parse()

Use it instead of _gtk_css_parser_has_number().

We need that once we introduce calc() support.

gtk/gtkcssbgsizevalue.c

@@ -194,7 +194,7 @@ _gtk_css_bg_size_value_parse (GtkCssParser *parser)
 
   if (_gtk_css_parser_try (parser, "auto", TRUE))
     y = NULL;
-  else if (!_gtk_css_parser_has_number (parser))
+  else if (!gtk_css_number_value_can_parse (parser))
     y = NULL;
   else
     {

gtk/gtkcssbordervalue.c

@@ -174,7 +174,7 @@ _gtk_css_border_value_parse (GtkCssParser           *parser,
       if (allow_auto && _gtk_css_parser_try (parser, "auto", TRUE))
         continue;
 
-      if (!_gtk_css_parser_has_number (parser))
+      if (!gtk_css_number_value_can_parse (parser))
         break;
 
       result->values[i] = _gtk_css_number_value_parse (parser, flags);

gtk/gtkcsscornervalue.c

@@ -132,7 +132,7 @@ _gtk_css_corner_value_parse (GtkCssParser *parser)
   if (x == NULL)
     return NULL;
 
-  if (!_gtk_css_parser_has_number (parser))
+  if (!gtk_css_number_value_can_parse (parser))
     y = _gtk_css_value_ref (x);
   else
     {

gtk/gtkcssimagecrossfade.c

@@ -163,7 +163,7 @@ gtk_css_image_cross_fade_parse (GtkCssImage  *image,
       return FALSE;
     }
 
-  if (_gtk_css_parser_has_number (parser))
+  if (gtk_css_number_value_can_parse (parser))
     {
       GtkCssValue *number;
       

gtk/gtkcssimagelinear.c

@@ -310,7 +310,7 @@ gtk_css_image_linear_parse (GtkCssImage  *image,
           return FALSE;
         }
     }
-  else if (_gtk_css_parser_has_number (parser))
+  else if (gtk_css_number_value_can_parse (parser))
     {
       linear->angle = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_ANGLE);
       if (linear->angle == NULL)
@@ -332,7 +332,7 @@ gtk_css_image_linear_parse (GtkCssImage  *image,
     if (stop.color == NULL)
       return FALSE;
 
-    if (_gtk_css_parser_has_number (parser))
+    if (gtk_css_number_value_can_parse (parser))
       {
         stop.offset = _gtk_css_number_value_parse (parser,
                                                    GTK_CSS_PARSE_PERCENT

gtk/gtkcssimageradial.c

@@ -282,9 +282,9 @@ gtk_css_image_radial_parse (GtkCssImage  *image,
 
         if (!has_size)
           {
-            if (_gtk_css_parser_has_number (parser))
+            if (gtk_css_number_value_can_parse (parser))
               radial->sizes[0] = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_LENGTH | GTK_CSS_PARSE_PERCENT);
-            if (_gtk_css_parser_has_number (parser))
+            if (gtk_css_number_value_can_parse (parser))
               radial->sizes[1] = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_LENGTH | GTK_CSS_PARSE_PERCENT);
             found_one = has_size = radial->sizes[0] != NULL;
           }
@@ -357,7 +357,7 @@ gtk_css_image_radial_parse (GtkCssImage  *image,
     if (stop.color == NULL)
       return FALSE;
 
-    if (_gtk_css_parser_has_number (parser))
+    if (gtk_css_number_value_can_parse (parser))
       {
         stop.offset = _gtk_css_number_value_parse (parser,
                                                    GTK_CSS_PARSE_PERCENT

gtk/gtkcssnumbervalue.c

@@ -48,6 +48,12 @@ _gtk_css_number_value_new (double     value,
   return gtk_css_dimension_value_new (value, unit);
 }
 
+gboolean
+gtk_css_number_value_can_parse (GtkCssParser *parser)
+{
+  return _gtk_css_parser_has_number (parser);
+}
+
 GtkCssValue *
 _gtk_css_number_value_parse (GtkCssParser           *parser,
                              GtkCssNumberParseFlags  flags)

gtk/gtkcssnumbervalueprivate.h

@@ -49,6 +49,7 @@ struct _GtkCssNumberValueClass {
 
 GtkCssValue *   _gtk_css_number_value_new           (double                  value,
                                                      GtkCssUnit              unit);
+gboolean        gtk_css_number_value_can_parse      (GtkCssParser           *parser);
 GtkCssValue *   _gtk_css_number_value_parse         (GtkCssParser           *parser,
                                                      GtkCssNumberParseFlags  flags);
 

gtk/gtkcsspositionvalue.c

@@ -210,7 +210,7 @@ position_value_parse (GtkCssParser *parser, gboolean try)
     }
   if (names[first].name == NULL)
     {
-      if (_gtk_css_parser_has_number (parser))
+      if (gtk_css_number_value_can_parse (parser))
         {
           missing = &y;
           x = _gtk_css_number_value_parse (parser,
@@ -239,7 +239,7 @@ position_value_parse (GtkCssParser *parser, gboolean try)
 
   if (names[second].name == NULL)
     {
-      if (_gtk_css_parser_has_number (parser))
+      if (gtk_css_number_value_can_parse (parser))
         {
           if (missing != &y)
             {

gtk/gtkcssshadowvalue.c

@@ -215,7 +215,7 @@ _gtk_css_shadow_value_parse (GtkCssParser *parser,
   do
   {
     if (values[HOFFSET] == NULL &&
-         _gtk_css_parser_has_number (parser))
+        gtk_css_number_value_can_parse (parser))
       {
         values[HOFFSET] = _gtk_css_number_value_parse (parser,
                                                        GTK_CSS_PARSE_LENGTH
@@ -229,7 +229,7 @@ _gtk_css_shadow_value_parse (GtkCssParser *parser,
         if (values[VOFFSET] == NULL)
           goto fail;
 
-        if (_gtk_css_parser_has_number (parser))
+        if (gtk_css_number_value_can_parse (parser))
           {
             values[RADIUS] = _gtk_css_number_value_parse (parser,
                                                           GTK_CSS_PARSE_LENGTH
@@ -241,7 +241,7 @@ _gtk_css_shadow_value_parse (GtkCssParser *parser,
         else
           values[RADIUS] = _gtk_css_number_value_new (0.0, GTK_CSS_PX);
 
-        if (box_shadow_mode && _gtk_css_parser_has_number (parser))
+        if (box_shadow_mode && gtk_css_number_value_can_parse (parser))
           {
             values[SPREAD] = _gtk_css_number_value_parse (parser,
                                                           GTK_CSS_PARSE_LENGTH

gtk/gtkcssshorthandpropertyimpl.c

@@ -68,7 +68,7 @@ parse_four_numbers (GtkCssShorthandProperty  *shorthand,
 
   for (i = 0; i < 4; i++)
     {
-      if (!_gtk_css_parser_has_number (parser))
+      if (!gtk_css_number_value_can_parse (parser))
         break;
 
       values[i] = _gtk_css_number_value_parse (parser, flags);
@@ -138,7 +138,7 @@ parse_border_radius (GtkCssShorthandProperty  *shorthand,
 
   for (i = 0; i < 4; i++)
     {
-      if (!_gtk_css_parser_has_number (parser))
+      if (!gtk_css_number_value_can_parse (parser))
         break;
       x[i] = _gtk_css_number_value_parse (parser,
                                           GTK_CSS_POSITIVE_ONLY
@@ -165,7 +165,7 @@ parse_border_radius (GtkCssShorthandProperty  *shorthand,
     {
       for (i = 0; i < 4; i++)
         {
-          if (!_gtk_css_parser_has_number (parser))
+          if (!gtk_css_number_value_can_parse (parser))
             break;
           y[i] = _gtk_css_number_value_parse (parser,
                                               GTK_CSS_POSITIVE_ONLY
@@ -335,7 +335,7 @@ parse_border_side (GtkCssShorthandProperty  *shorthand,
   do
   {
     if (values[0] == NULL &&
-         _gtk_css_parser_has_number (parser))
+        gtk_css_number_value_can_parse (parser))
       {
         values[0] = _gtk_css_number_value_parse (parser,
                                                  GTK_CSS_POSITIVE_ONLY
@@ -377,7 +377,7 @@ parse_border (GtkCssShorthandProperty  *shorthand,
   do
   {
     if (values[0] == NULL &&
-         _gtk_css_parser_has_number (parser))
+        gtk_css_number_value_can_parse (parser))
       {
         values[0] = _gtk_css_number_value_parse (parser,
                                                  GTK_CSS_POSITIVE_ONLY
@@ -620,7 +620,7 @@ parse_one_transition (GtkCssShorthandProperty  *shorthand,
     {
       /* the image part */
       if (values[2] == NULL &&
-          _gtk_css_parser_has_number (parser) && !_gtk_css_parser_begins_with (parser, '-'))
+          gtk_css_number_value_can_parse (parser) && !_gtk_css_parser_begins_with (parser, '-'))
         {
           GtkCssValue *number = _gtk_css_number_value_parse (parser, GTK_CSS_PARSE_TIME);
 
@@ -725,7 +725,7 @@ parse_one_animation (GtkCssShorthandProperty  *shorthand,
           values[1] = _gtk_css_number_value_new (HUGE_VAL, GTK_CSS_NUMBER);
         }
       else if ((values[1] == NULL || values[3] == NULL) &&
-          _gtk_css_parser_has_number (parser))
+               gtk_css_number_value_can_parse (parser))
         {
           GtkCssValue *value;