Make the print function output debug messages

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

3 files changed, 22 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/runtime/BlazeCommandEventHandler.java b/src/main/java/com/google/devtools/build/lib/runtime/BlazeCommandEventHandler.java
index 400d958e3b..7d10f655cd 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/BlazeCommandEventHandler.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/BlazeCommandEventHandler.java
@@ -299,6 +299,7 @@ public class BlazeCommandEventHandler implements EventHandler {
       case TIMEOUT:
       case ERROR:
       case WARNING:
+      case DEBUG:
       case DEPCHECKER:
         prefix = event.getKind() + ": ";
         break;
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/ExperimentalEventHandler.java b/src/main/java/com/google/devtools/build/lib/runtime/ExperimentalEventHandler.java
index 93931536d1..def5a1e0a8 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/ExperimentalEventHandler.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/ExperimentalEventHandler.java
@@ -339,6 +339,7 @@ public class ExperimentalEventHandler implements EventHandler {
           case FAIL:
           case WARNING:
           case INFO:
+          case DEBUG:
           case SUBCOMMAND:
             boolean incompleteLine;
             if (showProgress && buildRunning) {
@@ -401,6 +402,9 @@ public class ExperimentalEventHandler implements EventHandler {
       case INFO:
         terminal.setTextColor(Color.GREEN);
         break;
+      case DEBUG:
+        terminal.setTextColor(Color.YELLOW);
+        break;
       case SUBCOMMAND:
         terminal.setTextColor(Color.BLUE);
         break;
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.