Git commit a5a2e8f03aae3418e8c0ef15e221fbe3c3c0df99 by Filipe Saraiva.
Committed on 31/05/2014 at 18:43.
Pushed by filipesaraiva into branch 'master'.

Initial linear algebra extension support to Python 2 backend

M  +1    -0    src/backends/python2/python2backend.cpp
M  +89   -0    src/backends/python2/python2extensions.cpp
M  +16   -0    src/backends/python2/python2extensions.h

http://commits.kde.org/cantor/a5a2e8f03aae3418e8c0ef15e221fbe3c3c0df99

diff --git a/src/backends/python2/python2backend.cpp b/src/backends/python2=
/python2backend.cpp
index 91794e7..1fa9237 100644
--- a/src/backends/python2/python2backend.cpp
+++ b/src/backends/python2/python2backend.cpp
@@ -34,6 +34,7 @@ Python2Backend::Python2Backend(QObject* parent,const QLis=
t<QVariant> args ) : Ca
 {
     kDebug()<<"Creating Python2Backend";
 =

+    new Python2LinearAlgebraExtension(this);
     new Python2PackagingExtension(this);
     new Python2ScriptExtension(this);
     new Python2VariableManagementExtension(this);
diff --git a/src/backends/python2/python2extensions.cpp b/src/backends/pyth=
on2/python2extensions.cpp
index 79ae8c1..e8968bf 100644
--- a/src/backends/python2/python2extensions.cpp
+++ b/src/backends/python2/python2extensions.cpp
@@ -25,6 +25,95 @@
 #define PYTHON2_EXT_CDTOR(name) Python2##name##Extension::Python2##name##E=
xtension(QObject* parent) : name##Extension(parent) {} \
                                      Python2##name##Extension::~Python2##n=
ame##Extension() {}
 =

+PYTHON2_EXT_CDTOR(LinearAlgebra)
+
+QString Python2LinearAlgebraExtension::createVector(const QStringList& ent=
ries, Cantor::LinearAlgebraExtension::VectorType type)
+{
+    QString command;
+    command +=3D "numpy.matrix([";
+
+    foreach (const QString& entry, entries)
+    {
+        command +=3D entry + ", ";
+    }
+
+    command.chop(2);
+    command +=3D "])\n";
+    =

+    return command;
+}
+
+QString Python2LinearAlgebraExtension::createMatrix(const Cantor::LinearAl=
gebraExtension::Matrix& matrix)
+{
+    QString command;
+    command +=3D "numpy.matrix([[";
+
+    foreach (const QStringList row, matrix)
+    {
+        foreach (const QString entry, row)
+        {
+            command +=3D entry;
+            command +=3D ", ";
+        }
+        command.chop(2);
+        command +=3D "], [";
+    }
+
+    command.chop(3);
+    command +=3D "])";
+
+    return command;
+}
+
+QString Python2LinearAlgebraExtension::eigenValues(const QString& matrix)
+{
+    return QString("numpy.linalg.eigvals(%1)").arg(matrix);
+}
+
+QString Python2LinearAlgebraExtension::eigenVectors(const QString& matrix)
+{
+    return QString("numpy.linalg.eig(%1)").arg(matrix);
+}
+
+QString Python2LinearAlgebraExtension::identityMatrix(int size)
+{
+    return QString("numpy.identity(%1)").arg(size);
+}
+
+QString Python2LinearAlgebraExtension::invertMatrix(const QString& matrix)
+{
+    return QString("numpy.linalg.inv(%1)").arg(matrix);
+}
+
+QString Python2LinearAlgebraExtension::nullMatrix(int rows, int columns)
+{
+    return QString("numpy.zeros(%1, %2)").arg(rows).arg(columns);
+}
+
+QString Python2LinearAlgebraExtension::nullVector(int size, Cantor::Linear=
AlgebraExtension::VectorType type)
+{
+    QString command =3D "numpy.zeros(%1, %2)";
+    switch (type)
+    {
+        case ColumnVector:
+            return command.arg(size).arg(1);
+        case RowVector:
+            return command.arg(1).arg(size);
+        default:
+            return Cantor::LinearAlgebraExtension::nullVector(size, type);
+    }
+}
+
+QString Python2LinearAlgebraExtension::rank(const QString& matrix)
+{
+    return QString("numpy.linalg.matrix_rank(%1)").arg(matrix);
+}
+
+QString Python2LinearAlgebraExtension::charPoly(const QString& matrix)
+{
+    return QString("numpy.poly(%1)").arg(matrix);
+}
+
 PYTHON2_EXT_CDTOR(Packaging)
 =

 QString Python2PackagingExtension::importPackage(const QString& package)
diff --git a/src/backends/python2/python2extensions.h b/src/backends/python=
2/python2extensions.h
index 9e35d2d..dc54f0f 100644
--- a/src/backends/python2/python2extensions.h
+++ b/src/backends/python2/python2extensions.h
@@ -26,6 +26,22 @@
 #define PYTHON2_EXT_CDTOR_DECL(name) Python2##name##Extension(QObject* par=
ent); \
                                      ~Python2##name##Extension();
 =

+class Python2LinearAlgebraExtension : public Cantor::LinearAlgebraExtension
+{
+    public:
+    PYTHON2_EXT_CDTOR_DECL(LinearAlgebra)
+    virtual QString createVector(const QStringList& entries, VectorType ty=
pe);
+    virtual QString nullVector(int size, VectorType type);
+    virtual QString createMatrix(const Cantor::LinearAlgebraExtension::Mat=
rix& matrix);
+    virtual QString identityMatrix(int size);
+    virtual QString nullMatrix(int rows, int columns);
+    virtual QString rank(const QString& matrix);
+    virtual QString invertMatrix(const QString& matrix);
+    virtual QString charPoly(const QString& matrix);
+    virtual QString eigenVectors(const QString& matrix);
+    virtual QString eigenValues(const QString& matrix);
+};
+
 class Python2PackagingExtension : public Cantor::PackagingExtension
 {
     public: