LibWeb/CSS: Add a method to parse a value based on a ValueType

Author: https://github.com/AtkinsSJ
Commit: c7d4c4fbff
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5400
Reviewed-by: https://github.com/tcl3 ✅

Libraries/LibWeb/CMakeLists.txt

@@ -227,6 +227,7 @@ set(SOURCES
     CSS/Transformation.cpp
     CSS/TransitionEvent.cpp
     CSS/URL.cpp
+    CSS/ValueType.cpp
     CSS/VisualViewport.cpp
     DOM/AbortController.cpp
     DOM/AbortSignal.cpp

Libraries/LibWeb/CSS/Parser/Parser.h

@@ -291,6 +291,8 @@ private:
     Vector<Gfx::UnicodeRange> parse_unicode_ranges(TokenStream<ComponentValue>&);
     RefPtr<UnicodeRangeStyleValue const> parse_unicode_range_value(TokenStream<ComponentValue>&);
 
+    RefPtr<CSSStyleValue const> parse_value(ValueType, TokenStream<ComponentValue>&);
+
     Optional<GridSize> parse_grid_track_breadth(TokenStream<ComponentValue>&);
     Optional<GridSize> parse_grid_inflexible_breadth(TokenStream<ComponentValue>&);
     Optional<GridSize> parse_grid_fixed_breadth(TokenStream<ComponentValue>&);

Libraries/LibWeb/CSS/Parser/ValueParsing.cpp

@@ -4325,4 +4325,62 @@ NonnullRefPtr<CSSStyleValue const> Parser::resolve_unresolved_style_value(DOM::A
     return parsed_value.release_value();
 }
 
+RefPtr<CSSStyleValue const> Parser::parse_value(ValueType value_type, TokenStream<ComponentValue>& tokens)
+{
+    switch (value_type) {
+    case ValueType::Angle:
+        return parse_angle_value(tokens);
+    case ValueType::BackgroundPosition:
+        return parse_position_value(tokens, PositionParsingMode::BackgroundPosition);
+    case ValueType::BasicShape:
+        return parse_basic_shape_value(tokens);
+    case ValueType::Color:
+        return parse_color_value(tokens);
+    case ValueType::Counter:
+        return parse_counter_value(tokens);
+    case ValueType::CustomIdent:
+        // FIXME: Figure out how to pass the blacklist here
+        return parse_custom_ident_value(tokens, {});
+    case ValueType::EasingFunction:
+        return parse_easing_value(tokens);
+    case ValueType::FilterValueList:
+        return parse_filter_value_list_value(tokens);
+    case ValueType::FitContent:
+        return parse_fit_content_value(tokens);
+    case ValueType::Flex:
+        return parse_flex_value(tokens);
+    case ValueType::Frequency:
+        return parse_frequency_value(tokens);
+    case ValueType::Image:
+        return parse_image_value(tokens);
+    case ValueType::Integer:
+        return parse_integer_value(tokens);
+    case ValueType::Length:
+        return parse_length_value(tokens);
+    case ValueType::Number:
+        return parse_number_value(tokens);
+    case ValueType::OpenTypeTag:
+        return parse_opentype_tag_value(tokens);
+    case ValueType::Paint:
+        return parse_paint_value(tokens);
+    case ValueType::Percentage:
+        return parse_percentage_value(tokens);
+    case ValueType::Position:
+        return parse_position_value(tokens);
+    case ValueType::Ratio:
+        return parse_ratio_value(tokens);
+    case ValueType::Rect:
+        return parse_rect_value(tokens);
+    case ValueType::Resolution:
+        return parse_resolution_value(tokens);
+    case ValueType::String:
+        return parse_string_value(tokens);
+    case ValueType::Time:
+        return parse_time_value(tokens);
+    case ValueType::Url:
+        return parse_url_value(tokens);
+    }
+    VERIFY_NOT_REACHED();
+}
+
 }

Libraries/LibWeb/CSS/ValueType.cpp

@@ -4,11 +4,12 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/StringView.h>
 #include <LibWeb/CSS/ValueType.h>
 
 namespace Web::CSS {
 
-Optional<ValueType> value_type_from_string(StringView name)
+Optional<ValueType> value_type_from_string(StringView string)
 {
     if (string.equals_ignoring_ascii_case("angle"sv))
         return ValueType::Angle;

Libraries/LibWeb/CSS/ValueType.h

@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <AK/Optional.h>
 #include <AK/Types.h>
 
 namespace Web::CSS {