Make the print function output debug messages

RELNOTES: The `print` function now prints debug messages instead of warnings.
PiperOrigin-RevId: 164880003

1 files changed, 17 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/runtime/FancyTerminalEventHandler.java b/src/main/java/com/google/devtools/build/lib/runtime/FancyTerminalEventHandler.java
index 07234d5ef3..fa74355b31 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/FancyTerminalEventHandler.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/FancyTerminalEventHandler.java
@@ -201,6 +201,11 @@ public class FancyTerminalEventHandler extends BlazeCommandEventHandler {
           // and scroll it.
           warning(event);
           break;
+        case DEBUG:
+          // For debug messages, highlight the word "Debug" in boldface yellow,
+          // and scroll it.
+          debug(event);
+          break;
         case SUBCOMMAND:
           subcmd(event);
           break;
@@ -361,6 +366,18 @@ public class FancyTerminalEventHandler extends BlazeCommandEventHandler {
     crlf();
   }
 
+  private void debug(Event debug) throws IOException {
+    previousLineErasable = false;
+    if (useColor) {
+      terminal.textYellow();
+    }
+    terminal.writeString("DEBUG: ");
+    terminal.resetTerminal();
+    writeTimestampAndLocation(debug);
+    writeStringWithPotentialPeriod(debug.getMessage());
+    crlf();
+  }
+
   /**
    * Writes the given String to the terminal. This method also writes a trailing period if the
    * message doesn't end with a punctuation character.