Make --pretty-json work with Standard JSON output

libsolidity/interface/StandardCompiler.cpp

@@ -1420,7 +1420,7 @@ string StandardCompiler::compile(string const& _input) noexcept
 	try
 	{
 		if (!util::jsonParseStrict(_input, input, &errors))
-			return util::jsonCompactPrint(formatFatalError("JSONError", errors));
+			return util::jsonPrint(formatFatalError("JSONError", errors), m_jsonPrintingFormat);
 	}
 	catch (...)
 	{
@@ -1433,7 +1433,7 @@ string StandardCompiler::compile(string const& _input) noexcept
 
 	try
 	{
-		return util::jsonCompactPrint(output);
+		return util::jsonPrint(output, m_jsonPrintingFormat);
 	}
 	catch (...)
 	{

libsolidity/interface/StandardCompiler.h

@@ -24,6 +24,7 @@
 #pragma once
 
 #include <libsolidity/interface/CompilerStack.h>
+#include <libsolutil/JSON.h>
 
 #include <optional>
 #include <utility>
@@ -46,8 +47,10 @@ public:
 	/// Creates a new StandardCompiler.
 	/// @param _readFile callback used to read files for import statements. Must return
 	/// and must not emit exceptions.
-	explicit StandardCompiler(ReadCallback::Callback _readFile = ReadCallback::Callback()):
-		m_readFile(std::move(_readFile))
+	explicit StandardCompiler(ReadCallback::Callback _readFile = ReadCallback::Callback(),
+		util::JsonFormat const& _format = {}):
+		m_readFile(std::move(_readFile)),
+		m_jsonPrintingFormat(std::move(_format))
 	{
 	}
 
@@ -91,6 +94,8 @@ private:
 	Json::Value compileYul(InputsAndSettings _inputsAndSettings);
 
 	ReadCallback::Callback m_readFile;
+
+	util::JsonFormat m_jsonPrintingFormat;
 };
 
 }