Added a flag to record when a source is reconstructed from JSON so garbage code snippets are not printed after source location.

liblangutil/CharStream.h

@@ -73,9 +73,15 @@ public:
 	CharStream() = default;
 	CharStream(std::string _source, std::string _name):
 		m_source(std::move(_source)), m_name(std::move(_name)) {}
+	CharStream(std::string _source, std::string _name, bool _importedFromAST):
+		m_source(std::move(_source)),
+		m_name(std::move(_name)),
+		m_importedFromAST(_importedFromAST)
+	{ }
 
 	size_t position() const { return m_position; }
 	bool isPastEndOfInput(size_t _charsForward = 0) const { return (m_position + _charsForward) >= m_source.size(); }
+	bool isImportedFromAST() const { return m_importedFromAST; }
 
 	char get(size_t _charsForward = 0) const { return m_source[m_position + _charsForward]; }
 	char advanceAndGet(size_t _chars = 1);
@@ -138,6 +144,7 @@ public:
 private:
 	std::string m_source;
 	std::string m_name;
+	bool m_importedFromAST{false};
 	size_t m_position{0};
 };