From c85705a2397c611f86332f33e05dd9d115f710f8 Mon Sep 17 00:00:00 2001
From: Honza <honza@Pinguino.zoo>
Date: Sun, 8 Dec 2013 19:46:09 +0100
Subject: [PATCH] feature: Rules can be printed to ostream
---
alib/src/grammar/Rule.cpp | 24 ++++++++++++++++++++++++
alib/src/grammar/Rule.h | 2 ++
2 files changed, 26 insertions(+)
diff --git a/alib/src/grammar/Rule.cpp b/alib/src/grammar/Rule.cpp
index 8113b2ca37..6aa296a25f 100644
--- a/alib/src/grammar/Rule.cpp
+++ b/alib/src/grammar/Rule.cpp
@@ -102,4 +102,28 @@ bool Rule::operator !=(const Rule& other) const {
|| !equal(rightSide.begin(), rightSide.end(), other.rightSide.begin());
}
+std::ostream& operator<<(std::ostream& out, const Rule& rule) {
+ bool first;
+ out << " leftSide = [";
+
+ first = true;
+ for(list<Symbol>::const_iterator iter = rule.leftSide.begin(); iter != rule.leftSide.end(); iter++) {
+ if(!first) out << ", ";
+ first = false;
+ out << *iter;
+ }
+
+ out << "] rightSize = [";
+
+ first = true;
+ for(list<Symbol>::const_iterator iter = rule.rightSide.begin(); iter != rule.rightSide.end(); iter++) {
+ if(!first) out << ", ";
+ first = false;
+ out << *iter;
+ }
+ out << "]";
+
+ return out;
+}
+
} /* namespace grammar */
diff --git a/alib/src/grammar/Rule.h b/alib/src/grammar/Rule.h
index 1395dc2fef..ab2235a836 100644
--- a/alib/src/grammar/Rule.h
+++ b/alib/src/grammar/Rule.h
@@ -65,6 +65,8 @@ public:
bool operator <(const Rule& other) const;
bool operator ==(const Rule& other) const;
bool operator !=(const Rule& other) const;
+
+ friend std::ostream& operator<<(std::ostream&, const Rule&);
};
} /* namespace grammar */
--
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