Fix parsing of colors (remove dynamic cast on eval)

Author: mgreter

src/eval.cpp

@@ -600,10 +600,6 @@ namespace Sass {
           switch (op_type) {
             case Sass_OP::EQ: return *l_n == *r_c ? bool_true : bool_false;
             case Sass_OP::NEQ: return *l_n == *r_c ? bool_false : bool_true;
-            case Sass_OP::LT: return *l_n < *r_c ? bool_true : bool_false;
-            case Sass_OP::GTE: return *l_n < *r_c ? bool_false : bool_true;
-            case Sass_OP::LTE: return *l_n < *r_c || *l_n == *r_c ? bool_true : bool_false;
-            case Sass_OP::GT: return *l_n < *r_c || *l_n == *r_c ? bool_false : bool_true;
             case Sass_OP::ADD: case Sass_OP::SUB: case Sass_OP::MUL: case Sass_OP::DIV: case Sass_OP::MOD:
               return Operators::op_number_color(op_type, *l_n, *r_c, ctx.c_options, b_in->pstate());
             default: break;
@@ -644,10 +640,6 @@ namespace Sass {
           switch (op_type) {
             case Sass_OP::EQ: return *l_c == *r_n ? bool_true : bool_false;
             case Sass_OP::NEQ: return *l_c == *r_n ? bool_false : bool_true;
-            case Sass_OP::LT: return *l_c < *r_n ? bool_true : bool_false;
-            case Sass_OP::GTE: return *l_c < *r_n ? bool_false : bool_true;
-            case Sass_OP::LTE: return *l_c < *r_n || *l_c == *r_n ? bool_true : bool_false;
-            case Sass_OP::GT: return *l_c < *r_n || *l_c == *r_n ? bool_false : bool_true;
             case Sass_OP::ADD: case Sass_OP::SUB: case Sass_OP::MUL: case Sass_OP::DIV: case Sass_OP::MOD:
               return Operators::op_color_number(op_type, *l_c, *r_n, ctx.c_options, b_in->pstate());
             default: break;
@@ -1271,13 +1263,6 @@ namespace Sass {
 
   Expression_Ptr Eval::operator()(String_Constant_Ptr s)
   {
-    if (!s->is_delayed() && name_to_color(s->value())) {
-      Color_Ptr c = SASS_MEMORY_COPY(name_to_color(s->value())); // copy
-      c->pstate(s->pstate());
-      c->disp(s->value());
-      c->is_delayed(true);
-      return c;
-    }
     return s;
   }
 

src/inspect.cpp

@@ -645,6 +645,9 @@ namespace Sass {
     }
 
     std::stringstream hexlet;
+    // dart sass compressed all colors in regular css always
+    // ruby sass and libsass does it only when not delayed
+    // since color math is going to be removed, this can go too
     bool compressed = opt.output_style == COMPRESSED;
     hexlet << '#' << std::setw(1) << std::setfill('0');
     // create a short color hexlet if there is any need for it

src/parser.cpp

@@ -1578,7 +1578,7 @@ namespace Sass {
     return nr;
   }
 
-  Expression_Ptr Parser::lexed_hex_color(const ParserState& pstate, const std::string& parsed)
+  Value_Ptr Parser::lexed_hex_color(const ParserState& pstate, const std::string& parsed)
   {
     Color_Ptr color = NULL;
     if (parsed[0] != '#') {
@@ -1628,6 +1628,19 @@ namespace Sass {
     return color;
   }
 
+  Value_Ptr Parser::color_or_string(const std::string& lexed) const
+  {
+    if (auto color = name_to_color(lexed)) {
+      auto c = SASS_MEMORY_NEW(Color, color);
+      c->is_delayed(true);
+      c->pstate(pstate);
+      c->disp(lexed);
+      return c;
+    } else {
+      return SASS_MEMORY_NEW(String_Constant, pstate, lexed);
+    }
+  }
+
   // parse one value for a list
   Expression_Obj Parser::parse_value()
   {
@@ -1670,7 +1683,7 @@ namespace Sass {
     { return SASS_MEMORY_NEW(Null, pstate); }
 
     if (lex< identifier >()) {
-      return SASS_MEMORY_NEW(String_Constant, pstate, lexed);
+      return color_or_string(lexed);
     }
 
     if (lex< percentage >())
@@ -1841,7 +1854,7 @@ namespace Sass {
     return schema->length() > 0 ? schema.detach() : NULL;
   }
 
-  String_Constant_Obj Parser::parse_static_value()
+  Value_Obj Parser::parse_static_value()
   {
     lex< static_value >();
     Token str(lexed);
@@ -1852,8 +1865,7 @@ namespace Sass {
     --str.end;
     --position;
 
-    String_Constant_Ptr str_node = SASS_MEMORY_NEW(String_Constant, pstate, str.time_wspace());
-    return str_node;
+    return color_or_string(str.time_wspace());;
   }
 
   String_Obj Parser::parse_string()
@@ -1986,7 +1998,7 @@ namespace Sass {
         }
         if (peek < exactly < '-' > >()) break;
       }
-      else if (lex< sequence < identifier > >()) {
+      else if (lex< identifier >()) {
         schema->append(SASS_MEMORY_NEW(String_Constant, pstate, lexed));
         if ((*position == '"' || *position == '\'') || peek < alternatives < alpha > >()) {
            // need_space = true;

src/parser.hpp

@@ -290,7 +290,7 @@ namespace Sass {
     String_Obj parse_url_function_argument();
     String_Obj parse_interpolated_chunk(Token, bool constant = false, bool css = true);
     String_Obj parse_string();
-    String_Constant_Obj parse_static_value();
+    Value_Obj parse_static_value();
     String_Schema_Obj parse_css_variable_value(bool top_level = true);
     String_Schema_Obj parse_css_variable_value_token(bool top_level = true);
     String_Obj parse_ie_property();
@@ -325,6 +325,8 @@ namespace Sass {
     Error_Obj parse_error();
     Debug_Obj parse_debug();
 
+    Value_Ptr color_or_string(const std::string& lexed) const;
+
     // be more like ruby sass
     Expression_Obj lex_almost_any_value_token();
     Expression_Obj lex_almost_any_value_chars();
@@ -380,12 +382,12 @@ namespace Sass {
     static Number_Ptr lexed_number(const ParserState& pstate, const std::string& parsed);
     static Number_Ptr lexed_dimension(const ParserState& pstate, const std::string& parsed);
     static Number_Ptr lexed_percentage(const ParserState& pstate, const std::string& parsed);
-    static Expression_Ptr lexed_hex_color(const ParserState& pstate, const std::string& parsed);
+    static Value_Ptr lexed_hex_color(const ParserState& pstate, const std::string& parsed);
   private:
     Number_Ptr lexed_number(const std::string& parsed) { return lexed_number(pstate, parsed); };
     Number_Ptr lexed_dimension(const std::string& parsed) { return lexed_dimension(pstate, parsed); };
     Number_Ptr lexed_percentage(const std::string& parsed) { return lexed_percentage(pstate, parsed); };
-    Expression_Ptr lexed_hex_color(const std::string& parsed) { return lexed_hex_color(pstate, parsed); };
+    Value_Ptr lexed_hex_color(const std::string& parsed) { return lexed_hex_color(pstate, parsed); };
 
     static const char* re_attr_sensitive_close(const char* src);
     static const char* re_attr_insensitive_close(const char* src);