Extract commonly used Parser code to new Parser component

src/Parser/Parsing/Matcher/MatcherOr.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#include <iterator>
+#include <memory>
+
+#include "Parsing/IParserValue.h"
+#include "AbstractMatcher.h"
+
+template <typename TokenType>
+class MatcherOr final : public AbstractMatcher<TokenType>
+{
+    // TokenType must inherit IParserValue
+    static_assert(std::is_base_of<IParserValue, TokenType>::value);
+
+    std::vector<std::unique_ptr<AbstractMatcher<TokenType>>> m_matchers;
+
+protected:
+    MatcherResult<TokenType> CanMatch(ILexer<TokenType>* lexer, unsigned tokenOffset) override
+    {
+        for (const std::unique_ptr<AbstractMatcher<TokenType>>& matcher : m_matchers)
+        {
+            MatcherResult<TokenType> result = matcher->Match(lexer, tokenOffset);
+
+            if (!result.m_matches)
+                continue;
+
+            return result;
+        }
+
+        return MatcherResult<TokenType>::NoMatch();
+    }
+
+public:
+    MatcherOr(std::initializer_list<Movable<std::unique_ptr<AbstractMatcher<TokenType>>>> matchers)
+        : m_matchers(std::make_move_iterator(matchers.begin()), std::make_move_iterator(matchers.end()))
+    {
+    }
+};