[analyzer][AST] print() JSONify: Stmt implementation

Summary:
This patch also adds a function called `JsonFormat()` which:
- Flattens the string so removes the new-lines.
- Escapes double quotes.

Reviewers: NoQ, xazax.hun, ravikandhadai, baloghadamsoftware, Szelethus

Reviewed By: NoQ

Subscribers: cfe-commits, szepet, rnkovacs, a.sidorin, mikhail.ramalho,
             donat.nagy, dkrupp

Tags: #clang

Differential Revision: https://reviews.llvm.org/D62494

llvm-svn: 362000

1 files changed, 1 insertions, 11 deletions

diff --git a/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp b/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
index e87b6535c1e..9a9b12dc600 100644
--- a/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
+++ b/clang/lib/StaticAnalyzer/Core/ExprEngine.cpp
@@ -170,17 +170,7 @@ public:
     Out << ", \"pretty\": ";
 
     if (S) {
-      llvm::SmallString<256> TempBuf;
-      llvm::raw_svector_ostream TempOut(TempBuf);
-
-      // See whether the current statement is pretty-printable.
-      S->printPretty(TempOut, Helper, PP);
-      if (!TempBuf.empty()) {
-        Out << '\"' << TempBuf.str().trim() << '\"';
-        TempBuf.clear();
-      } else {
-        Out << "null";
-      }
+      S->printJson(Out, Helper, PP, /*AddQuotes=*/true);
     } else {
       Out << '\"' << I->getAnyMember()->getNameAsString() << '\"';
     }