add swig interface for tags

CMakeLists.txt

@@ -929,6 +929,7 @@ ELSEIF (LINALG_EIGENSOLVER_LIB STREQUAL "VIENNACL")
 ENDIF ()
 
 #SWIG Interfaces
+add_subdirectory(${CMAKE_SOURCE_DIR}/src/interfaces/modular)
 LIST(APPEND CMAKE_SWIG_FLAGS "-w473")
 LIST(APPEND CMAKE_SWIG_FLAGS "-w454")
 LIST(APPEND CMAKE_SWIG_FLAGS "-w312")

src/interfaces/modular/CMakeLists.txt

@@ -0,0 +1,16 @@
+# Generate automatic shogun-base.i from jinja2 templates
+if(SYSTEM_INCLUDES)
+    INCLUDE_DIRECTORIES(SYSTEM ${SYSTEM_INCLUDES})
+endif()
+include_directories(${source_dir}/include ${INCLUDES} ${CMAKE_CURRENT_SOURCE_DIR})
+
+# Generate automatic shogun-base.i from jinja2 templates
+ADD_CUSTOM_COMMAND(OUTPUT shogun-base.i
+    COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/shogun-base.i.py
+    ${CMAKE_CURRENT_SOURCE_DIR}/shogun-base.i.jinja2
+    shogun-base.i
+    ${CMAKE_CURRENT_SOURCE_DIR}/shogun-base-list.txt
+    DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/shogun-base.i.py
+    ${CMAKE_CURRENT_SOURCE_DIR}/shogun-base.i.jinja2
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    COMMENT "Generating shogun-base.i")

src/interfaces/modular/shogun-base-list.txt

@@ -0,0 +1,11 @@
+\\ Contains list of shogun base classes. The list format is
+\\ "'CLASS/TEMPLATE', 'new name for class/template', 'name of class/template in c++'",
+
+CLASS, String, std::string
+CLASS, Int, int32_t
+CLASS, Float, float64_t
+CLASS, Kernel, CKernel
+CLASS, Machine, CMachine
+CLASS, Labels, CLabels
+CLASS, Features, CFeatures
+TEMPLATE, DenseFeatures, CDenseFeatures

src/interfaces/modular/shogun-base.i.jinja2

@@ -0,0 +1,21 @@
+/*
+ * THIS IS A GENERATED FILE!  DO NOT CHANGE THIS FILE!  CHANGE THE
+ * CORRESPONDING TEMPLATE FILE, PLEASE!
+ */
+
+using namespace shogun;
+
+{% for class in classes %}
+{% if class[0] == 'CLASS' %}
+	%template(Tag{{class[1]}}) Tag<{{class[2]}}>;
+	%template(set) CSGObject::set<{{class[2]}}>;
+	%template(set{{class[1]}}) CSGObject::set<{{class[2]}}, void>;
+	%template(get) CSGObject::get<{{class[2]}}>;
+	%template(get{{class[1]}}) CSGObject::get<{{class[2]}}, void>;
+	%template(has) CSGObject::has<{{class[2]}}>;
+	%template(has{{class[1]}}) CSGObject::has<{{class[2]}}, void>;
+
+{% else %}
+// TODO: TEMPLATE
+{% endif %}
+{% endfor %}

src/interfaces/modular/shogun-base.i.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Written (W) 2016 Sanuj Sharma
+
+def entry(templateFile, class_list_file):
+    templateLoader = jinja2.FileSystemLoader(searchpath="/")
+    templateEnv = jinja2.Environment(loader=templateLoader)
+
+    template = templateEnv.get_template(templateFile)
+
+    classes = []
+    with open(class_list_file) as f:
+        for line in f:
+            if line[0] is 'C' or line[0] is 'T':
+                temp = [elt.strip() for elt in line.split(',')]
+                classes.append(temp)
+
+
+    types = ['PT_BOOL', 'PT_CHAR', 'PT_INT8', 'PT_UINT8', 'PT_INT16', 'PT_UINT16', 'PT_INT32',
+             'PT_UINT32', 'PT_INT64', 'PT_UINT64', 'PT_FLOAT32', 'PT_FLOAT64', 'PT_FLOATMAX']
+
+    templateVars = {"classes" : classes, "types" : types}
+
+    return template.render(templateVars)
+
+# execution
+# ./shogun-base.i.py <template file> <output file name> <extra args...>
+
+import sys
+TEMPLATE_FILE = sys.argv[1]
+output_file = sys.argv[2]
+class_list_file = sys.argv[3]
+
+try:
+    import jinja2
+    outputText = entry(TEMPLATE_FILE, class_list_file)
+except ImportError:
+    import os
+    basename = os.path.basename(output_file)
+    basename = basename.replace('.cc', '')
+    print("Please install jinja2 for shogun-base.i");
+    outputText = ['Please install jinja2 to auto-generate content for this file.']
+
+f = open(output_file, 'w')
+f.writelines(outputText)
+f.close()