Support static expressions for menu simple string properties

src/ObjLoading/Parsing/Menu/Matcher/MenuMatcherFactory.cpp

@@ -58,6 +58,20 @@ MatcherFactoryWrapper<SimpleParserValue> MenuMatcherFactory::Numeric() const
     }));
 }
 
+MatcherFactoryWrapper<SimpleParserValue> MenuMatcherFactory::TextExpression() const
+{
+    return MatcherFactoryWrapper(Or({
+        StringChain().Tag(TAG_STRING_CHAIN).Capture(CAPTURE_STRING_CHAIN),
+        Identifier().Tag(TAG_IDENTIFIER).Capture(CAPTURE_IDENTIFIER),
+        And({
+                Char('(').Capture(CAPTURE_FIRST_TOKEN),
+                Label(MenuExpressionMatchers::LABEL_EXPRESSION),
+                Char(')'),
+            })
+            .Tag(TAG_EXPRESSION),
+    }));
+}
+
 MatcherFactoryWrapper<SimpleParserValue> MenuMatcherFactory::IntExpression() const
 {
     return MatcherFactoryWrapper(Or({
@@ -144,6 +158,42 @@ int MenuMatcherFactory::TokenIntExpressionValue(MenuFileParserState* state, Sequ
     throw ParsingException(TokenPos(), "TokenIntExpressionValue must be expression or int");
 }
 
+std::string MenuMatcherFactory::TokenTextExpressionValue(MenuFileParserState* state, SequenceResult<SimpleParserValue>& result)
+{
+    const auto nextTag = result.PeekTag();
+
+    assert(nextTag == TAG_STRING_CHAIN || nextTag == TAG_IDENTIFIER || nextTag == TAG_EXPRESSION);
+    if (nextTag == TAG_STRING_CHAIN)
+    {
+        result.NextTag();
+        return result.NextCapture(CAPTURE_STRING_CHAIN).StringValue();
+    }
+
+    if (nextTag == TAG_IDENTIFIER)
+    {
+        result.NextTag();
+        return result.NextCapture(CAPTURE_IDENTIFIER).IdentifierValue();
+    }
+
+    if (nextTag == TAG_EXPRESSION)
+    {
+        result.NextTag();
+        const auto expression = MenuExpressionMatchers(state).ProcessExpression(result);
+
+        if (!expression || !expression->IsStatic())
+            throw ParsingException(result.NextCapture(CAPTURE_FIRST_TOKEN).GetPos(), "Not a valid static expression");
+
+        const auto value = expression->EvaluateStatic();
+
+        if (value.m_type != SimpleExpressionValue::Type::STRING)
+            throw ParsingException(result.NextCapture(CAPTURE_FIRST_TOKEN).GetPos(), "Expression MUST be string type");
+
+        return std::move(*value.m_string_value);
+    }
+
+    throw ParsingException(TokenPos(), "TokenIntExpressionValue must be expression or int");
+}
+
 double MenuMatcherFactory::TokenNumericExpressionValue(MenuFileParserState* state, SequenceResult<SimpleParserValue>& result)
 {
     const auto nextTag = result.PeekTag();

src/ObjLoading/Parsing/Menu/Matcher/MenuMatcherFactory.h

@@ -8,13 +8,17 @@ namespace menu
 {
     class MenuMatcherFactory : public SimpleMatcherFactory
     {
-        static constexpr auto TAG_INT = 1420;
+        static constexpr auto TAG_STRING_CHAIN = 1420;
-        static constexpr auto TAG_NUMERIC = 1421;
+        static constexpr auto TAG_IDENTIFIER = 1421;
-        static constexpr auto TAG_EXPRESSION = 1422;
+        static constexpr auto TAG_INT = 1422;
+        static constexpr auto TAG_NUMERIC = 1423;
+        static constexpr auto TAG_EXPRESSION = 1424;
 
         static constexpr auto CAPTURE_FIRST_TOKEN = 1420;
-        static constexpr auto CAPTURE_INT = 1421;
+        static constexpr auto CAPTURE_STRING_CHAIN = 1421;
-        static constexpr auto CAPTURE_NUMERIC = 1422;
+        static constexpr auto CAPTURE_IDENTIFIER = 1422;
+        static constexpr auto CAPTURE_INT = 1423;
+        static constexpr auto CAPTURE_NUMERIC = 1424;
 
     public:
         explicit MenuMatcherFactory(const IMatcherForLabelSupplier<SimpleParserValue>* labelSupplier);
@@ -24,6 +28,7 @@ namespace menu
         _NODISCARD MatcherFactoryWrapper<SimpleParserValue> TextNoChain() const;
         _NODISCARD MatcherFactoryWrapper<SimpleParserValue> Numeric() const;
 
+        _NODISCARD MatcherFactoryWrapper<SimpleParserValue> TextExpression() const;
         _NODISCARD MatcherFactoryWrapper<SimpleParserValue> IntExpression() const;
         _NODISCARD MatcherFactoryWrapper<SimpleParserValue> NumericExpression() const;
 
@@ -31,6 +36,7 @@ namespace menu
         _NODISCARD static double TokenNumericFloatingPointValue(const SimpleParserValue& value);
         _NODISCARD static std::string& TokenTextValue(const SimpleParserValue& value);
 
+        _NODISCARD static std::string TokenTextExpressionValue(MenuFileParserState* state, SequenceResult<SimpleParserValue>& result);
         _NODISCARD static int TokenIntExpressionValue(MenuFileParserState* state, SequenceResult<SimpleParserValue>& result);
         _NODISCARD static double TokenNumericExpressionValue(MenuFileParserState* state, SequenceResult<SimpleParserValue>& result);
     };

src/ObjLoading/Parsing/Menu/Sequence/Generic/GenericStringPropertySequence.cpp

@@ -1,5 +1,6 @@
 #include "GenericStringPropertySequence.h"
 
+#include "Parsing/Menu/Matcher/MenuExpressionMatchers.h"
 #include "Parsing/Menu/Matcher/MenuMatcherFactory.h"
 
 #include <utility>
@@ -10,10 +11,11 @@ GenericStringPropertySequence::GenericStringPropertySequence(std::string keyword
     : m_set_callback(std::move(setCallback))
 {
     const MenuMatcherFactory create(this);
+    AddLabeledMatchers(MenuExpressionMatchers().Expression(this), MenuExpressionMatchers::LABEL_EXPRESSION);
 
     AddMatchers({
         create.KeywordIgnoreCase(std::move(keywordName)).Capture(CAPTURE_FIRST_TOKEN),
-        create.Text().Capture(CAPTURE_VALUE),
+        create.TextExpression(),
     });
 }
 
@@ -21,7 +23,7 @@ void GenericStringPropertySequence::ProcessMatch(MenuFileParserState* state, Seq
 {
     if (m_set_callback)
     {
-        const auto& value = MenuMatcherFactory::TokenTextValue(result.NextCapture(CAPTURE_VALUE));
+        const auto value = MenuMatcherFactory::TokenTextExpressionValue(state, result);
         m_set_callback(state, result.NextCapture(CAPTURE_FIRST_TOKEN).GetPos(), value);
     }
 }

src/ObjLoading/Parsing/Menu/Sequence/Generic/GenericStringPropertySequence.h

@@ -14,7 +14,6 @@ namespace menu
 
     private:
         static constexpr auto CAPTURE_FIRST_TOKEN = 1;
-        static constexpr auto CAPTURE_VALUE = 2;
 
         const callback_t m_set_callback;
 

test/ObjLoadingTests/Parsing/Menu/Sequence/ItemScopeSequencesTests.cpp

@@ -64,6 +64,33 @@ namespace test::parsing::menu::sequence::item
         }
     };
 
+    TEST_CASE("ItemScopeSequences: Can use static expressions for simple text properties", "[parsing][sequence][menu]")
+    {
+        ItemSequenceTestsHelper helper(FeatureLevel::IW4, false);
+        const TokenPos pos;
+        helper.Tokens({
+            SimpleParserValue::Identifier(pos, new std::string("name")),
+            SimpleParserValue::Character(pos, '('),
+            SimpleParserValue::String(pos, new std::string("Hello")),
+            SimpleParserValue::Character(pos, '+'),
+            SimpleParserValue::String(pos, new std::string(" ")),
+            SimpleParserValue::Character(pos, '+'),
+            SimpleParserValue::String(pos, new std::string("World")),
+            SimpleParserValue::Character(pos, ')'),
+            SimpleParserValue::EndOfFile(pos),
+        });
+
+        const auto result = helper.PerformTest();
+
+        REQUIRE(result);
+        REQUIRE(helper.m_consumed_token_count == 8);
+
+        const auto* item = helper.m_state->m_current_item;
+        REQUIRE(item);
+
+        REQUIRE(item->m_name == "Hello World");
+    }
+
     TEST_CASE("ItemScopeSequences: Rect works with only x,y,w,h as ints", "[parsing][sequence][menu]")
     {
         ItemSequenceTestsHelper helper(FeatureLevel::IW4, false);