From 1a1f19619035472095daa3fc1ab3cfcd4a0b61a5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicolas=20Lalev=C3=A9e?= <nicolas.lalevee@hibnet.org>
Date: Wed, 20 Apr 2016 15:04:10 +0200
Subject: [PATCH] redirect error messages to a proper logger

---
 .../joestelmach/natty/generated/DateLexer.g    |  5 +++++
 .../joestelmach/natty/generated/DateParser.g   | 12 ++++++++++++
 .../joestelmach/natty/generated/DateWalker.g   |  8 ++++++++
 .../joestelmach/natty/generated/TreeRewrite.g  |  8 ++++++++
 .../natty/generated/imports/NumericRules.g     | 18 +++++++++++++++++-
 5 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/src/main/antlr3/com/joestelmach/natty/generated/DateLexer.g b/src/main/antlr3/com/joestelmach/natty/generated/DateLexer.g
index ae3c389f..3939733d 100644
--- a/src/main/antlr3/com/joestelmach/natty/generated/DateLexer.g
+++ b/src/main/antlr3/com/joestelmach/natty/generated/DateLexer.g
@@ -14,6 +14,11 @@ lexer grammar DateLexer;
       _logger.debug(message);
     }
   }
+
+  @Override
+  public void emitErrorMessage(String msg) {
+    _logger.error(msg);
+  }
 }
 
 // ********** date rules ********** 
diff --git a/src/main/antlr3/com/joestelmach/natty/generated/DateParser.g b/src/main/antlr3/com/joestelmach/natty/generated/DateParser.g
index 30b35810..54d1b5d3 100644
--- a/src/main/antlr3/com/joestelmach/natty/generated/DateParser.g
+++ b/src/main/antlr3/com/joestelmach/natty/generated/DateParser.g
@@ -38,6 +38,8 @@ tokens {
 
 @header {
   package com.joestelmach.natty.generated;
+  
+  import java.io.IOException;
 }
 
 @members {
@@ -52,6 +54,16 @@ tokens {
       _logger.debug(message);
     }
   }
+
+  @Override
+  public void reportError(IOException e) {
+    _logger.error("Unexpected IO error", e);
+  }
+
+  @Override
+  public void emitErrorMessage(String msg) {
+    _logger.error(msg);
+  }
 }
 
 parse
diff --git a/src/main/antlr3/com/joestelmach/natty/generated/DateWalker.g b/src/main/antlr3/com/joestelmach/natty/generated/DateWalker.g
index 8d87db3b..6f8eacdf 100644
--- a/src/main/antlr3/com/joestelmach/natty/generated/DateWalker.g
+++ b/src/main/antlr3/com/joestelmach/natty/generated/DateWalker.g
@@ -8,6 +8,9 @@ options {
 @header { package com.joestelmach.natty.generated; }
 
 @members {
+  private static org.slf4j.Logger _logger =
+    org.slf4j.LoggerFactory.getLogger(com.joestelmach.natty.generated.DateWalker.class);
+
   private com.joestelmach.natty.WalkerState _walkerState;
   private java.util.Date referenceDate;
 
@@ -23,6 +26,11 @@ options {
     throw e;
   }
 
+  @Override
+  public void emitErrorMessage(String msg) {
+    _logger.error(msg);
+  }
+
   public void setReferenceDate(java.util.Date referenceDate) {
     this.referenceDate = referenceDate;
   }
diff --git a/src/main/antlr3/com/joestelmach/natty/generated/TreeRewrite.g b/src/main/antlr3/com/joestelmach/natty/generated/TreeRewrite.g
index 4ca30869..4a9d89a5 100644
--- a/src/main/antlr3/com/joestelmach/natty/generated/TreeRewrite.g
+++ b/src/main/antlr3/com/joestelmach/natty/generated/TreeRewrite.g
@@ -10,6 +10,9 @@ options {
 @header { package com.joestelmach.natty.generated; }
 
 @members {
+  private static org.slf4j.Logger _logger =
+    org.slf4j.LoggerFactory.getLogger(com.joestelmach.natty.generated.TreeRewrite.class);
+
   @Override
   protected Object recoverFromMismatchedToken(IntStream input, int ttype, BitSet follow)
       throws RecognitionException {
@@ -21,6 +24,11 @@ options {
       throws RecognitionException {
     throw e;
   }
+
+  @Override
+  public void emitErrorMessage(String msg) {
+    _logger.error(msg);
+  }
 }
 
 @rulecatch {
diff --git a/src/main/antlr3/com/joestelmach/natty/generated/imports/NumericRules.g b/src/main/antlr3/com/joestelmach/natty/generated/imports/NumericRules.g
index b23d78c7..3e0cf882 100644
--- a/src/main/antlr3/com/joestelmach/natty/generated/imports/NumericRules.g
+++ b/src/main/antlr3/com/joestelmach/natty/generated/imports/NumericRules.g
@@ -7,7 +7,23 @@ options {
 tokens {
   INT;
 }
-  
+
+@members {
+  private static org.slf4j.Logger _logger =
+    org.slf4j.LoggerFactory.getLogger(com.joestelmach.natty.generated.DateParser_NumericRules.class);
+
+  @Override
+  public void reportError(IOException e) {
+    _logger.error("Unexpected IO error", e);
+  }
+
+  @Override
+  public void emitErrorMessage(String msg) {
+    _logger.error(msg);
+  }
+}
+
+
 // ********** numeric rules **********
 
 // a number between 00 and 59 inclusive, with a mandatory 0 prefix before numbers 0-9