python support

Author: mmcilroy

main/java/uk/co/real_logic/sbe/generation/TargetCodeGenerator.java

@@ -22,6 +22,8 @@
 import uk.co.real_logic.sbe.generation.java.JavaGenerator;
 import uk.co.real_logic.sbe.generation.java.JavaMockPojoGenerator;
 import uk.co.real_logic.sbe.generation.java.PackageOutputManager;
+import uk.co.real_logic.sbe.generation.python.PythonGenerator;
+import uk.co.real_logic.sbe.generation.python.ModuleOutputManager;
 import uk.co.real_logic.sbe.ir.Ir;
 
 import java.io.IOException;
@@ -49,6 +51,15 @@ public CodeGenerator newInstance(final Ir ir, final String outputDir)
  }
  },
 
+ PYTHON()
+ {
+ public CodeGenerator newInstance(final Ir ir, final String outputDir)
+ throws IOException
+ {
+ return new PythonGenerator(ir, new ModuleOutputManager(outputDir, ir.applicableNamespace()));
+ }
+ },
+
  CPP98()
  {
  public CodeGenerator newInstance(final Ir ir, final String outputDir)

main/java/uk/co/real_logic/sbe/generation/python/ModuleOutputManager.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2013 Real Logic Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package uk.co.real_logic.sbe.generation.python;
+
+import uk.co.real_logic.sbe.generation.OutputManager;
+import uk.co.real_logic.sbe.util.Verify;
+
+import java.io.*;
+
+/**
+ * {@link OutputManager} for managing the creation of C++98 source files as the target of code generation.
+ * The character encoding for the {@link java.io.Writer} is UTF-8.
+ */
+public class ModuleOutputManager implements OutputManager
+{
+ private final File outputDir;
+
+ /**
+ * Create a new {@link uk.co.real_logic.sbe.generation.OutputManager} for generating C++98 source files into a given package.
+ *
+ * @param baseDirectoryName for the generated source code.
+ * @param namespaceName for the generated source code relative to the baseDirectoryName.
+ * @throws IOException if an error occurs during output
+ */
+ public ModuleOutputManager(final String baseDirectoryName, final String namespaceName)
+ throws IOException
+ {
+ Verify.notNull(baseDirectoryName, "baseDirectoryName");
+ Verify.notNull(namespaceName, "applicableNamespace");
+
+ final String dirName =
+ (baseDirectoryName.endsWith("" + File.separatorChar) ? baseDirectoryName : baseDirectoryName + File.separatorChar) +
+ namespaceName.replace('.', '_');
+
+ outputDir = new File(dirName);
+ if (!outputDir.exists())
+ {
+ if (!outputDir.mkdirs())
+ {
+ throw new IllegalStateException("Unable to create directory: " + dirName);
+ }
+ }
+ }
+
+ /**
+ * Create a new output which will be a C++98 source file in the given package.
+ *
+ * The {@link java.io.Writer} should be closed once the caller has finished with it. The Writer is
+ * buffer for efficient IO operations.
+ *
+ * @param name the name of the C++ class.
+ * @return a {@link java.io.Writer} to which the source code should be written.
+ */
+ public Writer createOutput(final String name) throws IOException
+ {
+ final File targetFile = new File(outputDir, name + ".py");
+ return new BufferedWriter(new OutputStreamWriter(new FileOutputStream(targetFile), "UTF-8"));
+ }
+}