[gentoo-commits] proj/libbash:master commit in: src/core/, src/core/tests/

["Petteri Räty" <betelgeuse@gentoo.org>]

commit:     eccb906c8fd1df61fc1f554485e560bcb4f8d1eb
Author:     Mu Qiao <qiaomuf <AT> gentoo <DOT> org>
AuthorDate: Tue Apr 12 01:07:45 2011 +0000
Commit:     Petteri Räty <betelgeuse <AT> gentoo <DOT> org>
CommitDate: Tue Apr 12 07:22:49 2011 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/libbash.git;a=commit;h=eccb906c

Implement get_length and get_array_length for variable

get_length can use one optional argument to specify array index.
get_array_length returns the internal map size.

---
 src/core/interpreter.h          |    7 +++++--
 src/core/symbols.hpp            |   15 +++++++++++++++
 src/core/tests/symbols_test.cpp |   14 ++++++++++++++
 3 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/src/core/interpreter.h b/src/core/interpreter.h
index 7155639..43f816b 100644
--- a/src/core/interpreter.h
+++ b/src/core/interpreter.h
@@ -492,9 +492,12 @@ public:
   /// \brief get the length of a string variable
   /// \param the name of the variable
   /// \return the length
-  int get_length(const std::string& name)
+  unsigned get_length(const std::string& name, const unsigned index=0)
   {
-    return resolve<std::string>(name).size();
+    std::shared_ptr<variable> value = members.resolve(name);
+    if(!value)
+      return 0;
+    return value->get_length(index);
   }
 
 };

diff --git a/src/core/symbols.hpp b/src/core/symbols.hpp
index f645047..9bb0b98 100644
--- a/src/core/symbols.hpp
+++ b/src/core/symbols.hpp
@@ -178,6 +178,21 @@ public:
     value[index] = new_value;
   }
 
+  /// \brief get the length of a variable
+  /// \param the index of the variable, use 0 if it's not an array
+  /// \return the length of the variable
+  unsigned get_length(const unsigned index=0) const
+  {
+    return get_value<std::string>(index).size();
+  }
+
+  /// \brief get the length of an array variable
+  /// \return the length of the array
+  unsigned get_array_length() const
+  {
+    return value.size();
+  }
+
   /// \brief check whether the value of the variable is null
   /// \return whether the value of the variable is null
   bool is_null() const

diff --git a/src/core/tests/symbols_test.cpp b/src/core/tests/symbols_test.cpp
index 2b7a65e..1602f52 100644
--- a/src/core/tests/symbols_test.cpp
+++ b/src/core/tests/symbols_test.cpp
@@ -103,6 +103,20 @@ TEST(symbol_test, is_null)
   EXPECT_TRUE(variable("foo", "", false, true).is_null());
 }
 
+TEST(symbol_test, get_length)
+{
+  variable an_int("foo", 10);
+  EXPECT_EQ(2, an_int.get_length());
+
+  variable an_string("bar", "hello world");
+  EXPECT_EQ(11, an_string.get_length());
+
+  map<int, string> values = {{0, "1"}, {1, "2"}, {2, "hello"}};
+  variable array("array", values);
+  EXPECT_EQ(5, array.get_length(2));
+  EXPECT_EQ(3, array.get_array_length());
+}
+
 TEST(scope_test, define_resolve)
 {
   scope members;