/**
* Create code for the work function of a built-in filter.
*
* @param filter The filter that the work function is being built for
* @param selfID A unique id assigned in FlatIRToC
* @param p A printer to output the generated code
*/
static void predefinedFilterWork(SIRPredefinedFilter filter, int selfID, CodegenPrintWriter p) {
Tape inputTape = RegisterStreams.getFilterInStream(filter);
Tape outputTape = RegisterStreams.getFilterOutStream(filter);
// Caller has printed function name and an iteration parameter ____n
// Generate loop to execute body of this function ____n times,
// In loop generate specialized code for function.
p.print("void " + ClusterUtils.getWorkName(filter, selfID) + "(int ____n) {");
p.indent();
p.newLine();
p.indent();
// p.println("// predefinedFilterWork " + filter.getName());
// SIRFileReader
if (filter instanceof SIRFileReader) {
if (!(KjcOptions.mencoder || KjcOptions.blender)) {
genFileReaderWork((SIRFileReader) filter, outputTape, selfID, p);
}
// SIRFileWriter
} else if (filter instanceof SIRFileWriter) {
if (!(KjcOptions.mencoder || KjcOptions.blender)) {
genFileWriterWork((SIRFileWriter) filter, inputTape, selfID, p);
}
// SIRIdentity
} else if (filter instanceof SIRIdentity) {
assert false : "should not process SIRIdentity here";
p.println("for (; 0 < ____n; ____n--) {");
p.indent();
p.println(" " + outputTape.getPushName() + "(" + inputTape.getPopName() + "());");
p.outdent();
p.print("}"); // end of for loop.
} else if (filter instanceof SIRDummySink || filter instanceof SIRDummySource) {
// DummySource and SummySink do not appear in any of our
// application code. Are they part of the language?
// TODO: get right exception for unimplemented.
throw new Error("Unsupported predefined filter " + filter.getName());
} else {
// TODO: get right unchecked exception for unextended code...
throw new Error("Unknown predefined filter " + filter.getName());
}
p.newLine();
p.outdent(); // end of method body
p.outdent(); // end of method definition
p.print("}");
p.newLine();
p.newLine();
}
/**
* Create code for the init function of built-in filter
*
* @param filter The filter for which we are creating init function
* @param return_type The return type for the init function
* @param function_name The name for the init function
* @param selfID The unique identifier that FlatIRToCluster has assigned to the function
* @param cleanupCode A list of statements run at "clean-up" time to which this code can add
* requests to close files, etc.
* @param p The printer for outputting code for the function
*/
static void predefinedFilterInit(
SIRPredefinedFilter filter,
CType return_type,
String function_name,
int selfID,
List /*String*/ cleanupCode,
CodegenPrintWriter p) {
// No wrapper code around init since may need to create defns at file
// level. We assume that the code generator will continue to
// generate code for init before code for work, so scope of
// any file-level code will include the work function.
// p.println("// predefinedFilterInit " + filter.getName()
// + " " + filter.getInputType().toString() + " -> "
// + filter.getOutputType().toString());
if (filter instanceof SIRFileReader) {
if (!(KjcOptions.mencoder || KjcOptions.blender)) {
genFileReaderInit(
(SIRFileReader) filter, return_type, function_name, selfID, cleanupCode, p);
}
} else if (filter instanceof SIRFileWriter) {
if (!(KjcOptions.mencoder || KjcOptions.blender)) {
genFileWriterInit(
(SIRFileWriter) filter, return_type, function_name, selfID, cleanupCode, p);
}
} else if (filter instanceof SIRIdentity
|| filter instanceof SIRDummySink
|| filter instanceof SIRDummySource) {
// all of these have filters produce empty init functions.
startParameterlessFunction(CommonUtils.CTypeToStringA(return_type, true), function_name, p);
endFunction(p);
} else if (filter instanceof SIRDummySink) {
// TODO: get right exception for unimplemented.
throw new Error("Unsupported predefined filter " + filter.getName());
} else if (filter instanceof SIRDummySource) {
throw new Error("Unsupported predefined filter " + filter.getName());
} else {
// TODO: get right unchecked exception for unextended code...
throw new Error("Unknown predefined filter " + filter.getName());
}
}