From 0e9f31be1f15707e0e624de1b5f602ada5b21d6e Mon Sep 17 00:00:00 2001
From: Lukas Stadler <lukas.stadler@oracle.com>
Date: Mon, 15 Feb 2016 15:08:36 +0100
Subject: [PATCH] allow backslash at end of line (during parsing)
---
.../src/com/oracle/truffle/r/parser/ParserGeneration.java | 3 ++-
.../src/com/oracle/truffle/r/parser/R.g | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ParserGeneration.java b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ParserGeneration.java
index 3e1e4d967e..1d5aed8797 100644
--- a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ParserGeneration.java
+++ b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/ParserGeneration.java
@@ -73,6 +73,7 @@ public class ParserGeneration {
"allow multiple semicolons in {}",
"allow .. as identifier",
"rename Operator class",
- "remove FieldAccess, small refactorings"
+ "remove FieldAccess, small refactorings",
+ "allow backslash at line end"
};
}
diff --git a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/R.g b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/R.g
index 2e4c58571c..a23d2d2900 100644
--- a/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/R.g
+++ b/com.oracle.truffle.r.parser/src/com/oracle/truffle/r/parser/R.g
@@ -746,6 +746,7 @@ fragment ESCAPE [StringBuilder buf]
| '\'' { buf.append('\''); }
| ' ' { buf.append(' '); }
| '\\' { buf.append('\\'); }
+ | '\n' { buf.append('\n'); }
| a = OCT_DIGIT b = OCT_DIGIT c = OCT_DIGIT { buf.append(ParseUtil.octChar($a.text, $b.text, $c.text)); }
| a = OCT_DIGIT b = OCT_DIGIT { buf.append(ParseUtil.octChar($a.text, $b.text)); }
| a = OCT_DIGIT { buf.append(ParseUtil.octChar($a.text)); }
--
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