JavaSleep89
diff --git a/‎src/main/java/graphql/parser/GraphqlAntlrToLanguage.java‎
Lines changed: 7 additions & 0 deletions b/‎src/main/java/graphql/parser/GraphqlAntlrToLanguage.java‎
Lines changed: 7 additions & 0 deletions
diff --git a/‎src/main/java/graphql/parser/Parser.java‎
Lines changed: 9 additions & 3 deletions b/‎src/main/java/graphql/parser/Parser.java‎
Lines changed: 9 additions & 3 deletions
diff --git a/‎src/test/groovy/graphql/parser/IDLParserTest.groovy‎
Lines changed: 2 additions & 3 deletions b/‎src/test/groovy/graphql/parser/IDLParserTest.groovy‎
Lines changed: 2 additions & 3 deletions
@@ -53,6 +53,7 @@
 import graphql.parser.antlr.GraphqlBaseVisitor;
 import graphql.parser.antlr.GraphqlParser;
 import org.antlr.v4.runtime.CommonTokenStream;
+import org.antlr.v4.runtime.IntStream;
 import org.antlr.v4.runtime.ParserRuleContext;
 import org.antlr.v4.runtime.Token;
 
@@ -831,6 +832,12 @@ private Description newDescription(GraphqlParser.DescriptionContext descriptionC
     private SourceLocation getSourceLocation(ParserRuleContext parserRuleContext) {
         Token startToken = parserRuleContext.getStart();
         String sourceName = startToken.getTokenSource().getSourceName();
+        if (IntStream.UNKNOWN_SOURCE_NAME.equals(sourceName)) {
+            // UNKNOWN_SOURCE_NAME is Antrl's way of indicating that no source name was given during parsing --
+            // which is the case when queries and other operations are parsed. We don't want this hardcoded
+            // '<unknown>' sourceName to leak to clients when the response is serialized as JSON, so we null it.
+            sourceName = null;
+        }
         return new SourceLocation(startToken.getLine(), startToken.getCharPositionInLine() + 1, sourceName);
     }
 
 
@@ -5,15 +5,14 @@
 import graphql.parser.antlr.GraphqlLexer;
 import graphql.parser.antlr.GraphqlParser;
 import org.antlr.v4.runtime.BailErrorStrategy;
+import org.antlr.v4.runtime.CharStream;
 import org.antlr.v4.runtime.CharStreams;
 import org.antlr.v4.runtime.CommonTokenStream;
-import org.antlr.v4.runtime.IntStream;
 import org.antlr.v4.runtime.Token;
 import org.antlr.v4.runtime.atn.PredictionMode;
 import org.antlr.v4.runtime.misc.ParseCancellationException;
 
 import java.util.List;
-import java.util.Optional;
 
 @Internal
 public class Parser {
@@ -24,7 +23,14 @@ public Document parseDocument(String input) {
 
     public Document parseDocument(String input, String sourceName) {
 
-        GraphqlLexer lexer = new GraphqlLexer(CharStreams.fromString(input, Optional.ofNullable(sourceName).orElse(IntStream.UNKNOWN_SOURCE_NAME)));
+        CharStream charStream;
+        if(sourceName == null) {
+            charStream = CharStreams.fromString(input);
+        } else{
+            charStream = CharStreams.fromString(input, sourceName);
+        }
+
+        GraphqlLexer lexer = new GraphqlLexer(charStream);
 
         CommonTokenStream tokens = new CommonTokenStream(lexer);
 
 
@@ -34,7 +34,6 @@ import graphql.language.TypeName
 import graphql.language.UnionTypeDefinition
 import graphql.language.UnionTypeExtensionDefinition
 import graphql.language.VariableReference
-import org.antlr.v4.runtime.IntStream
 import spock.lang.Specification
 
 import java.util.stream.Collectors
@@ -809,8 +808,8 @@ input Gun {
 
         then:
 
-        defaultDoc.definitions[0].sourceLocation.sourceName == IntStream.UNKNOWN_SOURCE_NAME
-        namedDocNull.definitions[0].sourceLocation.sourceName == IntStream.UNKNOWN_SOURCE_NAME
+        defaultDoc.definitions[0].sourceLocation.sourceName == null
+        namedDocNull.definitions[0].sourceLocation.sourceName == null
         namedDoc.definitions[0].sourceLocation.sourceName == sourceName
 
     }