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llvm-mirror/utils/TableGen/LLVMCConfigurationEmitter.cpp
Mikhail Glushenkov 964b643cf8 Fix typo in error message. 
llvm-svn: 61191
2008-12-18 04:06:58 +00:00

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//===- LLVMCConfigurationEmitter.cpp - Generate LLVMC config ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open
// Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This tablegen backend is responsible for emitting LLVMC configuration code.
//
//===----------------------------------------------------------------------===//
#include "LLVMCConfigurationEmitter.h"
#include "Record.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/Support/Streams.h"
#include <algorithm>
#include <cassert>
#include <functional>
#include <stdexcept>
#include <string>
#include <typeinfo>
using namespace llvm;
namespace {
//===----------------------------------------------------------------------===//
/// Typedefs
typedef std::vector<Record*> RecordVector;
typedef std::vector<std::string> StrVector;
//===----------------------------------------------------------------------===//
/// Constants
// Indentation strings.
const char * Indent1 = " ";
const char * Indent2 = " ";
const char * Indent3 = " ";
// Default help string.
const char * DefaultHelpString = "NO HELP MESSAGE PROVIDED";
// Name for the "sink" option.
const char * SinkOptionName = "AutoGeneratedSinkOption";
//===----------------------------------------------------------------------===//
/// Helper functions
/// Id - An 'identity' function object.
struct Id {
template<typename T>
void operator()(const T&) const {
}
};
int InitPtrToInt(const Init* ptr) {
const IntInit& val = dynamic_cast<const IntInit&>(*ptr);
return val.getValue();
}
const std::string& InitPtrToString(const Init* ptr) {
const StringInit& val = dynamic_cast<const StringInit&>(*ptr);
return val.getValue();
}
const ListInit& InitPtrToList(const Init* ptr) {
const ListInit& val = dynamic_cast<const ListInit&>(*ptr);
return val;
}
const DagInit& InitPtrToDag(const Init* ptr) {
const DagInit& val = dynamic_cast<const DagInit&>(*ptr);
return val;
}
// checkNumberOfArguments - Ensure that the number of args in d is
// less than or equal to min_arguments, otherwise throw an exception.
void checkNumberOfArguments (const DagInit* d, unsigned min_arguments) {
if (!d || d->getNumArgs() < min_arguments)
throw "Property " + d->getOperator()->getAsString()
+ " has too few arguments!";
}
// isDagEmpty - is this DAG marked with an empty marker?
bool isDagEmpty (const DagInit* d) {
return d->getOperator()->getAsString() == "empty";
}
// EscapeVariableName - Escape commas and other symbols not allowed
// in the C++ variable names. Makes it possible to use options named
// like "Wa," (useful for prefix options).
std::string EscapeVariableName(const std::string& Var) {
std::string ret;
for (unsigned i = 0; i != Var.size(); ++i) {
char cur_char = Var[i];
if (cur_char == ',') {
ret += "_comma_";
}
else if (cur_char == '+') {
ret += "_plus_";
}
else if (cur_char == '-') {
ret += "_dash_";
}
else {
ret.push_back(cur_char);
}
}
return ret;
}
//===----------------------------------------------------------------------===//
/// Back-end specific code
/// OptionType - One of six different option types. See the
/// documentation for detailed description of differences.
/// Extern* options are those that are defined in some other plugin.
namespace OptionType {
enum OptionType { Alias, Switch, Parameter, ParameterList,
Prefix, PrefixList};
bool IsList (OptionType t) {
return (t == ParameterList || t == PrefixList);
}
bool IsSwitch (OptionType t) {
return (t == Switch);
}
bool IsParameter (OptionType t) {
return (t == Parameter || t == Prefix);
}
}
OptionType::OptionType stringToOptionType(const std::string& T) {
if (T == "alias_option")
return OptionType::Alias;
else if (T == "switch_option")
return OptionType::Switch;
else if (T == "parameter_option")
return OptionType::Parameter;
else if (T == "parameter_list_option")
return OptionType::ParameterList;
else if (T == "prefix_option")
return OptionType::Prefix;
else if (T == "prefix_list_option")
return OptionType::PrefixList;
else
throw "Unknown option type: " + T + '!';
}
namespace OptionDescriptionFlags {
enum OptionDescriptionFlags { Required = 0x1, Hidden = 0x2,
ReallyHidden = 0x4, Extern = 0x8 };
}
/// OptionDescription - Represents data contained in a single
/// OptionList entry.
struct OptionDescription {
OptionType::OptionType Type;
std::string Name;
unsigned Flags;
std::string Help;
OptionDescription(OptionType::OptionType t = OptionType::Switch,
const std::string& n = "",
const std::string& h = DefaultHelpString)
: Type(t), Name(n), Flags(0x0), Help(h)
{}
/// GenTypeDeclaration - Returns the C++ variable type of this
/// option.
const char* GenTypeDeclaration() const;
/// GenVariableName - Returns the variable name used in the
/// generated C++ code.
std::string GenVariableName() const;
/// Merge - Merge two option descriptions.
void Merge (const OptionDescription& other);
// Misc convenient getters/setters.
bool isAlias() const;
bool isExtern() const;
void setExtern();
bool isRequired() const;
void setRequired();
bool isHidden() const;
void setHidden();
bool isReallyHidden() const;
void setReallyHidden();
};
void OptionDescription::Merge (const OptionDescription& other)
{
if (other.Type != Type)
throw "Conflicting definitions for the option " + Name + "!";
if (Help == other.Help || Help == DefaultHelpString)
Help = other.Help;
else if (other.Help != DefaultHelpString) {
llvm::cerr << "Warning: several different help strings"
" defined for option " + Name + "\n";
}
Flags |= other.Flags;
}
bool OptionDescription::isAlias() const {
return Type == OptionType::Alias;
}
bool OptionDescription::isExtern() const {
return Flags & OptionDescriptionFlags::Extern;
}
void OptionDescription::setExtern() {
Flags |= OptionDescriptionFlags::Extern;
}
bool OptionDescription::isRequired() const {
return Flags & OptionDescriptionFlags::Required;
}
void OptionDescription::setRequired() {
Flags |= OptionDescriptionFlags::Required;
}
bool OptionDescription::isHidden() const {
return Flags & OptionDescriptionFlags::Hidden;
}
void OptionDescription::setHidden() {
Flags |= OptionDescriptionFlags::Hidden;
}
bool OptionDescription::isReallyHidden() const {
return Flags & OptionDescriptionFlags::ReallyHidden;
}
void OptionDescription::setReallyHidden() {
Flags |= OptionDescriptionFlags::ReallyHidden;
}
const char* OptionDescription::GenTypeDeclaration() const {
switch (Type) {
case OptionType::Alias:
return "cl::alias";
case OptionType::PrefixList:
case OptionType::ParameterList:
return "cl::list<std::string>";
case OptionType::Switch:
return "cl::opt<bool>";
case OptionType::Parameter:
case OptionType::Prefix:
default:
return "cl::opt<std::string>";
}
}
std::string OptionDescription::GenVariableName() const {
const std::string& EscapedName = EscapeVariableName(Name);
switch (Type) {
case OptionType::Alias:
return "AutoGeneratedAlias_" + EscapedName;
case OptionType::PrefixList:
case OptionType::ParameterList:
return "AutoGeneratedList_" + EscapedName;
case OptionType::Switch:
return "AutoGeneratedSwitch_" + EscapedName;
case OptionType::Prefix:
case OptionType::Parameter:
default:
return "AutoGeneratedParameter_" + EscapedName;
}
}
/// OptionDescriptions - An OptionDescription array plus some helper
/// functions.
class OptionDescriptions {
typedef StringMap<OptionDescription> container_type;
/// Descriptions - A list of OptionDescriptions.
container_type Descriptions;
public:
/// FindOption - exception-throwing wrapper for find().
const OptionDescription& FindOption(const std::string& OptName) const;
/// insertDescription - Insert new OptionDescription into
/// OptionDescriptions list
void InsertDescription (const OptionDescription& o);
// Support for STL-style iteration
typedef container_type::const_iterator const_iterator;
const_iterator begin() const { return Descriptions.begin(); }
const_iterator end() const { return Descriptions.end(); }
};
const OptionDescription&
OptionDescriptions::FindOption(const std::string& OptName) const
{
const_iterator I = Descriptions.find(OptName);
if (I != Descriptions.end())
return I->second;
else
throw OptName + ": no such option!";
}
void OptionDescriptions::InsertDescription (const OptionDescription& o)
{
container_type::iterator I = Descriptions.find(o.Name);
if (I != Descriptions.end()) {
OptionDescription& D = I->second;
D.Merge(o);
}
else {
Descriptions[o.Name] = o;
}
}
/// HandlerTable - A base class for function objects implemented as
/// 'tables of handlers'.
template <class T>
class HandlerTable {
protected:
// Implementation details.
/// Handler -
typedef void (T::* Handler) (const DagInit*);
/// HandlerMap - A map from property names to property handlers
typedef StringMap<Handler> HandlerMap;
static HandlerMap Handlers_;
static bool staticMembersInitialized_;
T* childPtr;
public:
HandlerTable(T* cp) : childPtr(cp)
{}
/// operator() - Just forwards to the corresponding property
/// handler.
void operator() (Init* i) {
const DagInit& property = InitPtrToDag(i);
const std::string& property_name = property.getOperator()->getAsString();
typename HandlerMap::iterator method = Handlers_.find(property_name);
if (method != Handlers_.end()) {
Handler h = method->second;
(childPtr->*h)(&property);
}
else {
throw "No handler found for property " + property_name + "!";
}
}
void AddHandler(const char* Property, Handler Handl) {
Handlers_[Property] = Handl;
}
};
template <class T> typename HandlerTable<T>::HandlerMap
HandlerTable<T>::Handlers_;
template <class T> bool HandlerTable<T>::staticMembersInitialized_ = false;
/// CollectOptionProperties - Function object for iterating over an
/// option property list.
class CollectOptionProperties : public HandlerTable<CollectOptionProperties> {
private:
/// optDescs_ - OptionDescriptions table. This is where the
/// information is stored.
OptionDescription& optDesc_;
public:
explicit CollectOptionProperties(OptionDescription& OD)
: HandlerTable<CollectOptionProperties>(this), optDesc_(OD)
{
if (!staticMembersInitialized_) {
AddHandler("extern", &CollectOptionProperties::onExtern);
AddHandler("help", &CollectOptionProperties::onHelp);
AddHandler("hidden", &CollectOptionProperties::onHidden);
AddHandler("really_hidden", &CollectOptionProperties::onReallyHidden);
AddHandler("required", &CollectOptionProperties::onRequired);
staticMembersInitialized_ = true;
}
}
private:
/// Option property handlers --
/// Methods that handle option properties such as (help) or (hidden).
void onExtern (const DagInit* d) {
checkNumberOfArguments(d, 0);
optDesc_.setExtern();
}
void onHelp (const DagInit* d) {
checkNumberOfArguments(d, 1);
optDesc_.Help = InitPtrToString(d->getArg(0));
}
void onHidden (const DagInit* d) {
checkNumberOfArguments(d, 0);
optDesc_.setHidden();
}
void onReallyHidden (const DagInit* d) {
checkNumberOfArguments(d, 0);
optDesc_.setReallyHidden();
}
void onRequired (const DagInit* d) {
checkNumberOfArguments(d, 0);
optDesc_.setRequired();
}
};
/// AddOption - A function object that is applied to every option
/// description. Used by CollectOptionDescriptions.
class AddOption {
private:
OptionDescriptions& OptDescs_;
public:
explicit AddOption(OptionDescriptions& OD) : OptDescs_(OD)
{}
void operator()(const Init* i) {
const DagInit& d = InitPtrToDag(i);
checkNumberOfArguments(&d, 1);
const OptionType::OptionType Type =
stringToOptionType(d.getOperator()->getAsString());
const std::string& Name = InitPtrToString(d.getArg(0));
OptionDescription OD(Type, Name);
if (!OD.isExtern())
checkNumberOfArguments(&d, 2);
if (OD.isAlias()) {
// Aliases store the aliased option name in the 'Help' field.
OD.Help = InitPtrToString(d.getArg(1));
}
else if (!OD.isExtern()) {
processOptionProperties(&d, OD);
}
OptDescs_.InsertDescription(OD);
}
private:
/// processOptionProperties - Go through the list of option
/// properties and call a corresponding handler for each.
static void processOptionProperties (const DagInit* d, OptionDescription& o) {
checkNumberOfArguments(d, 2);
DagInit::const_arg_iterator B = d->arg_begin();
// Skip the first argument: it's always the option name.
++B;
std::for_each(B, d->arg_end(), CollectOptionProperties(o));
}
};
/// CollectOptionDescriptions - Collects option properties from all
/// OptionLists.
void CollectOptionDescriptions (RecordVector::const_iterator B,
RecordVector::const_iterator E,
OptionDescriptions& OptDescs)
{
// For every OptionList:
for (; B!=E; ++B) {
RecordVector::value_type T = *B;
// Throws an exception if the value does not exist.
ListInit* PropList = T->getValueAsListInit("options");
// For every option description in this list:
// collect the information and
std::for_each(PropList->begin(), PropList->end(), AddOption(OptDescs));
}
}
// Tool information record
namespace ToolFlags {
enum ToolFlags { Join = 0x1, Sink = 0x2 };
}
struct ToolDescription : public RefCountedBase<ToolDescription> {
std::string Name;
Init* CmdLine;
Init* Actions;
StrVector InLanguage;
std::string OutLanguage;
std::string OutputSuffix;
unsigned Flags;
// Various boolean properties
void setSink() { Flags |= ToolFlags::Sink; }
bool isSink() const { return Flags & ToolFlags::Sink; }
void setJoin() { Flags |= ToolFlags::Join; }
bool isJoin() const { return Flags & ToolFlags::Join; }
// Default ctor here is needed because StringMap can only store
// DefaultConstructible objects
ToolDescription() : CmdLine(0), Actions(0), Flags(0) {}
ToolDescription (const std::string& n)
: Name(n), CmdLine(0), Actions(0), Flags(0)
{}
};
/// ToolDescriptions - A list of Tool information records.
typedef std::vector<IntrusiveRefCntPtr<ToolDescription> > ToolDescriptions;
/// CollectToolProperties - Function object for iterating over a list of
/// tool property records.
class CollectToolProperties : public HandlerTable<CollectToolProperties> {
private:
/// toolDesc_ - Properties of the current Tool. This is where the
/// information is stored.
ToolDescription& toolDesc_;
public:
explicit CollectToolProperties (ToolDescription& d)
: HandlerTable<CollectToolProperties>(this) , toolDesc_(d)
{
if (!staticMembersInitialized_) {
AddHandler("actions", &CollectToolProperties::onActions);
AddHandler("cmd_line", &CollectToolProperties::onCmdLine);
AddHandler("in_language", &CollectToolProperties::onInLanguage);
AddHandler("join", &CollectToolProperties::onJoin);
AddHandler("out_language", &CollectToolProperties::onOutLanguage);
AddHandler("output_suffix", &CollectToolProperties::onOutputSuffix);
AddHandler("sink", &CollectToolProperties::onSink);
staticMembersInitialized_ = true;
}
}
private:
/// Property handlers --
/// Functions that extract information about tool properties from
/// DAG representation.
void onActions (const DagInit* d) {
checkNumberOfArguments(d, 1);
Init* Case = d->getArg(0);
if (typeid(*Case) != typeid(DagInit) ||
static_cast<DagInit*>(Case)->getOperator()->getAsString() != "case")
throw
std::string("The argument to (actions) should be a 'case' construct!");
toolDesc_.Actions = Case;
}
void onCmdLine (const DagInit* d) {
checkNumberOfArguments(d, 1);
toolDesc_.CmdLine = d->getArg(0);
}
void onInLanguage (const DagInit* d) {
checkNumberOfArguments(d, 1);
Init* arg = d->getArg(0);
// Find out the argument's type.
if (typeid(*arg) == typeid(StringInit)) {
// It's a string.
toolDesc_.InLanguage.push_back(InitPtrToString(arg));
}
else {
// It's a list.
const ListInit& lst = InitPtrToList(arg);
StrVector& out = toolDesc_.InLanguage;
// Copy strings to the output vector.
for (ListInit::const_iterator B = lst.begin(), E = lst.end();
B != E; ++B) {
out.push_back(InitPtrToString(*B));
}
// Remove duplicates.
std::sort(out.begin(), out.end());
StrVector::iterator newE = std::unique(out.begin(), out.end());
out.erase(newE, out.end());
}
}
void onJoin (const DagInit* d) {
checkNumberOfArguments(d, 0);
toolDesc_.setJoin();
}
void onOutLanguage (const DagInit* d) {
checkNumberOfArguments(d, 1);
toolDesc_.OutLanguage = InitPtrToString(d->getArg(0));
}
void onOutputSuffix (const DagInit* d) {
checkNumberOfArguments(d, 1);
toolDesc_.OutputSuffix = InitPtrToString(d->getArg(0));
}
void onSink (const DagInit* d) {
checkNumberOfArguments(d, 0);
toolDesc_.setSink();
}
};
/// CollectToolDescriptions - Gather information about tool properties
/// from the parsed TableGen data (basically a wrapper for the
/// CollectToolProperties function object).
void CollectToolDescriptions (RecordVector::const_iterator B,
RecordVector::const_iterator E,
ToolDescriptions& ToolDescs)
{
// Iterate over a properties list of every Tool definition
for (;B!=E;++B) {
const Record* T = *B;
// Throws an exception if the value does not exist.
ListInit* PropList = T->getValueAsListInit("properties");
IntrusiveRefCntPtr<ToolDescription>
ToolDesc(new ToolDescription(T->getName()));
std::for_each(PropList->begin(), PropList->end(),
CollectToolProperties(*ToolDesc));
ToolDescs.push_back(ToolDesc);
}
}
/// FillInEdgeVector - Merge all compilation graph definitions into
/// one single edge list.
void FillInEdgeVector(RecordVector::const_iterator B,
RecordVector::const_iterator E, RecordVector& Out) {
for (; B != E; ++B) {
const ListInit* edges = (*B)->getValueAsListInit("edges");
for (unsigned i = 0; i < edges->size(); ++i)
Out.push_back(edges->getElementAsRecord(i));
}
}
/// CalculatePriority - Calculate the priority of this plugin.
int CalculatePriority(RecordVector::const_iterator B,
RecordVector::const_iterator E) {
int total = 0;
for (; B!=E; ++B) {
total += static_cast<int>((*B)->getValueAsInt("priority"));
}
return total;
}
/// NotInGraph - Helper function object for FilterNotInGraph.
struct NotInGraph {
private:
const llvm::StringSet<>& ToolsInGraph_;
public:
NotInGraph(const llvm::StringSet<>& ToolsInGraph)
: ToolsInGraph_(ToolsInGraph)
{}
bool operator()(const IntrusiveRefCntPtr<ToolDescription>& x) {
return (ToolsInGraph_.count(x->Name) == 0);
}
};
/// FilterNotInGraph - Filter out from ToolDescs all Tools not
/// mentioned in the compilation graph definition.
void FilterNotInGraph (const RecordVector& EdgeVector,
ToolDescriptions& ToolDescs) {
// List all tools mentioned in the graph.
llvm::StringSet<> ToolsInGraph;
for (RecordVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const Record* Edge = *B;
const std::string& NodeA = Edge->getValueAsString("a");
const std::string& NodeB = Edge->getValueAsString("b");
if (NodeA != "root")
ToolsInGraph.insert(NodeA);
ToolsInGraph.insert(NodeB);
}
// Filter ToolPropertiesList.
ToolDescriptions::iterator new_end =
std::remove_if(ToolDescs.begin(), ToolDescs.end(),
NotInGraph(ToolsInGraph));
ToolDescs.erase(new_end, ToolDescs.end());
}
/// FillInToolToLang - Fills in two tables that map tool names to
/// (input, output) languages. Helper function used by TypecheckGraph().
void FillInToolToLang (const ToolDescriptions& ToolDescs,
StringMap<StringSet<> >& ToolToInLang,
StringMap<std::string>& ToolToOutLang) {
for (ToolDescriptions::const_iterator B = ToolDescs.begin(),
E = ToolDescs.end(); B != E; ++B) {
const ToolDescription& D = *(*B);
for (StrVector::const_iterator B = D.InLanguage.begin(),
E = D.InLanguage.end(); B != E; ++B)
ToolToInLang[D.Name].insert(*B);
ToolToOutLang[D.Name] = D.OutLanguage;
}
}
/// TypecheckGraph - Check that names for output and input languages
/// on all edges do match. This doesn't do much when the information
/// about the whole graph is not available (i.e. when compiling most
/// plugins).
void TypecheckGraph (const RecordVector& EdgeVector,
const ToolDescriptions& ToolDescs) {
StringMap<StringSet<> > ToolToInLang;
StringMap<std::string> ToolToOutLang;
FillInToolToLang(ToolDescs, ToolToInLang, ToolToOutLang);
StringMap<std::string>::iterator IAE = ToolToOutLang.end();
StringMap<StringSet<> >::iterator IBE = ToolToInLang.end();
for (RecordVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const Record* Edge = *B;
const std::string& NodeA = Edge->getValueAsString("a");
const std::string& NodeB = Edge->getValueAsString("b");
StringMap<std::string>::iterator IA = ToolToOutLang.find(NodeA);
StringMap<StringSet<> >::iterator IB = ToolToInLang.find(NodeB);
if (NodeA != "root") {
if (IA != IAE && IB != IBE && IB->second.count(IA->second) == 0)
throw "Edge " + NodeA + "->" + NodeB
+ ": output->input language mismatch";
}
if (NodeB == "root")
throw std::string("Edges back to the root are not allowed!");
}
}
/// WalkCase - Walks the 'case' expression DAG and invokes
/// TestCallback on every test, and StatementCallback on every
/// statement. Handles 'case' nesting, but not the 'and' and 'or'
/// combinators.
// TODO: Re-implement EmitCaseConstructHandler on top of this function?
template <typename F1, typename F2>
void WalkCase(Init* Case, F1 TestCallback, F2 StatementCallback) {
const DagInit& d = InitPtrToDag(Case);
bool even = false;
for (DagInit::const_arg_iterator B = d.arg_begin(), E = d.arg_end();
B != E; ++B) {
Init* arg = *B;
if (even && dynamic_cast<DagInit*>(arg)
&& static_cast<DagInit*>(arg)->getOperator()->getAsString() == "case")
WalkCase(arg, TestCallback, StatementCallback);
else if (!even)
TestCallback(arg);
else
StatementCallback(arg);
even = !even;
}
}
/// ExtractOptionNames - A helper function object used by
/// CheckForSuperfluousOptions() to walk the 'case' DAG.
class ExtractOptionNames {
llvm::StringSet<>& OptionNames_;
void processDag(const Init* Statement) {
const DagInit& Stmt = InitPtrToDag(Statement);
const std::string& ActionName = Stmt.getOperator()->getAsString();
if (ActionName == "forward" || ActionName == "forward_as" ||
ActionName == "unpack_values" || ActionName == "switch_on" ||
ActionName == "parameter_equals" || ActionName == "element_in_list" ||
ActionName == "not_empty" || ActionName == "empty") {
checkNumberOfArguments(&Stmt, 1);
const std::string& Name = InitPtrToString(Stmt.getArg(0));
OptionNames_.insert(Name);
}
else if (ActionName == "and" || ActionName == "or") {
for (unsigned i = 0, NumArgs = Stmt.getNumArgs(); i < NumArgs; ++i) {
this->processDag(Stmt.getArg(i));
}
}
}
public:
ExtractOptionNames(llvm::StringSet<>& OptionNames) : OptionNames_(OptionNames)
{}
void operator()(const Init* Statement) {
if (typeid(*Statement) == typeid(ListInit)) {
const ListInit& DagList = *static_cast<const ListInit*>(Statement);
for (ListInit::const_iterator B = DagList.begin(), E = DagList.end();
B != E; ++B)
this->processDag(*B);
}
else {
this->processDag(Statement);
}
}
};
/// CheckForSuperfluousOptions - Check that there are no side
/// effect-free options (specified only in the OptionList). Otherwise,
/// output a warning.
void CheckForSuperfluousOptions (const RecordVector& Edges,
const ToolDescriptions& ToolDescs,
const OptionDescriptions& OptDescs) {
llvm::StringSet<> nonSuperfluousOptions;
// Add all options mentioned in the ToolDesc.Actions to the set of
// non-superfluous options.
for (ToolDescriptions::const_iterator B = ToolDescs.begin(),
E = ToolDescs.end(); B != E; ++B) {
const ToolDescription& TD = *(*B);
ExtractOptionNames Callback(nonSuperfluousOptions);
if (TD.Actions)
WalkCase(TD.Actions, Callback, Callback);
}
// Add all options mentioned in the 'case' clauses of the
// OptionalEdges of the compilation graph to the set of
// non-superfluous options.
for (RecordVector::const_iterator B = Edges.begin(), E = Edges.end();
B != E; ++B) {
const Record* Edge = *B;
DagInit* Weight = Edge->getValueAsDag("weight");
if (!isDagEmpty(Weight))
WalkCase(Weight, ExtractOptionNames(nonSuperfluousOptions), Id());
}
// Check that all options in OptDescs belong to the set of
// non-superfluous options.
for (OptionDescriptions::const_iterator B = OptDescs.begin(),
E = OptDescs.end(); B != E; ++B) {
const OptionDescription& Val = B->second;
if (!nonSuperfluousOptions.count(Val.Name)
&& Val.Type != OptionType::Alias)
llvm::cerr << "Warning: option '-" << Val.Name << "' has no effect! "
"Probable cause: this option is specified only in the OptionList.\n";
}
}
/// EmitCaseTest1Arg - Helper function used by
/// EmitCaseConstructHandler.
bool EmitCaseTest1Arg(const std::string& TestName,
const DagInit& d,
const OptionDescriptions& OptDescs,
std::ostream& O) {
checkNumberOfArguments(&d, 1);
const std::string& OptName = InitPtrToString(d.getArg(0));
if (TestName == "switch_on") {
const OptionDescription& OptDesc = OptDescs.FindOption(OptName);
if (!OptionType::IsSwitch(OptDesc.Type))
throw OptName + ": incorrect option type - should be a switch!";
O << OptDesc.GenVariableName();
return true;
} else if (TestName == "input_languages_contain") {
O << "InLangs.count(\"" << OptName << "\") != 0";
return true;
} else if (TestName == "in_language") {
// This works only for single-argument Tool::GenerateAction. Join
// tools can process several files in different languages simultaneously.
// TODO: make this work with Edge::Weight (if possible).
O << "LangMap.GetLanguage(inFile) == \"" << OptName << '\"';
return true;
} else if (TestName == "not_empty" || TestName == "empty") {
const char* Test = (TestName == "empty") ? "" : "!";
if (OptName == "o") {
O << Test << "OutputFilename.empty()";
return true;
}
else {
const OptionDescription& OptDesc = OptDescs.FindOption(OptName);
if (OptionType::IsSwitch(OptDesc.Type))
throw OptName
+ ": incorrect option type - should be a list or parameter!";
O << Test << OptDesc.GenVariableName() << ".empty()";
return true;
}
}
return false;
}
/// EmitCaseTest2Args - Helper function used by
/// EmitCaseConstructHandler.
bool EmitCaseTest2Args(const std::string& TestName,
const DagInit& d,
const char* IndentLevel,
const OptionDescriptions& OptDescs,
std::ostream& O) {
checkNumberOfArguments(&d, 2);
const std::string& OptName = InitPtrToString(d.getArg(0));
const std::string& OptArg = InitPtrToString(d.getArg(1));
const OptionDescription& OptDesc = OptDescs.FindOption(OptName);
if (TestName == "parameter_equals") {
if (!OptionType::IsParameter(OptDesc.Type))
throw OptName + ": incorrect option type - should be a parameter!";
O << OptDesc.GenVariableName() << " == \"" << OptArg << "\"";
return true;
}
else if (TestName == "element_in_list") {
if (!OptionType::IsList(OptDesc.Type))
throw OptName + ": incorrect option type - should be a list!";
const std::string& VarName = OptDesc.GenVariableName();
O << "std::find(" << VarName << ".begin(),\n"
<< IndentLevel << Indent1 << VarName << ".end(), \""
<< OptArg << "\") != " << VarName << ".end()";
return true;
}
return false;
}
// Forward declaration.
// EmitLogicalOperationTest and EmitCaseTest are mutually recursive.
void EmitCaseTest(const DagInit& d, const char* IndentLevel,
const OptionDescriptions& OptDescs,
std::ostream& O);
/// EmitLogicalOperationTest - Helper function used by
/// EmitCaseConstructHandler.
void EmitLogicalOperationTest(const DagInit& d, const char* LogicOp,
const char* IndentLevel,
const OptionDescriptions& OptDescs,
std::ostream& O) {
O << '(';
for (unsigned j = 0, NumArgs = d.getNumArgs(); j < NumArgs; ++j) {
const DagInit& InnerTest = InitPtrToDag(d.getArg(j));
EmitCaseTest(InnerTest, IndentLevel, OptDescs, O);
if (j != NumArgs - 1)
O << ")\n" << IndentLevel << Indent1 << ' ' << LogicOp << " (";
else
O << ')';
}
}
/// EmitCaseTest - Helper function used by EmitCaseConstructHandler.
void EmitCaseTest(const DagInit& d, const char* IndentLevel,
const OptionDescriptions& OptDescs,
std::ostream& O) {
const std::string& TestName = d.getOperator()->getAsString();
if (TestName == "and")
EmitLogicalOperationTest(d, "&&", IndentLevel, OptDescs, O);
else if (TestName == "or")
EmitLogicalOperationTest(d, "||", IndentLevel, OptDescs, O);
else if (EmitCaseTest1Arg(TestName, d, OptDescs, O))
return;
else if (EmitCaseTest2Args(TestName, d, IndentLevel, OptDescs, O))
return;
else
throw TestName + ": unknown edge property!";
}
// Emit code that handles the 'case' construct.
// Takes a function object that should emit code for every case clause.
// Callback's type is
// void F(Init* Statement, const char* IndentLevel, std::ostream& O).
template <typename F>
void EmitCaseConstructHandler(const Init* Dag, const char* IndentLevel,
F Callback, bool EmitElseIf,
const OptionDescriptions& OptDescs,
std::ostream& O) {
const DagInit* d = &InitPtrToDag(Dag);
if (d->getOperator()->getAsString() != "case")
throw std::string("EmitCaseConstructHandler should be invoked"
" only on 'case' expressions!");
unsigned numArgs = d->getNumArgs();
if (d->getNumArgs() < 2)
throw "There should be at least one clause in the 'case' expression:\n"
+ d->getAsString();
for (unsigned i = 0; i != numArgs; ++i) {
const DagInit& Test = InitPtrToDag(d->getArg(i));
// Emit the test.
if (Test.getOperator()->getAsString() == "default") {
if (i+2 != numArgs)
throw std::string("The 'default' clause should be the last in the"
"'case' construct!");
O << IndentLevel << "else {\n";
}
else {
O << IndentLevel << ((i != 0 && EmitElseIf) ? "else if (" : "if (");
EmitCaseTest(Test, IndentLevel, OptDescs, O);
O << ") {\n";
}
// Emit the corresponding statement.
++i;
if (i == numArgs)
throw "Case construct handler: no corresponding action "
"found for the test " + Test.getAsString() + '!';
Init* arg = d->getArg(i);
const DagInit* nd = dynamic_cast<DagInit*>(arg);
if (nd && (nd->getOperator()->getAsString() == "case")) {
// Handle the nested 'case'.
EmitCaseConstructHandler(nd, (std::string(IndentLevel) + Indent1).c_str(),
Callback, EmitElseIf, OptDescs, O);
}
else {
Callback(arg, (std::string(IndentLevel) + Indent1).c_str(), O);
}
O << IndentLevel << "}\n";
}
}
/// SubstituteSpecialCommands - Perform string substitution for $CALL
/// and $ENV. Helper function used by EmitCmdLineVecFill().
std::string SubstituteSpecialCommands(const std::string& cmd) {
size_t cparen = cmd.find(")");
std::string ret;
if (cmd.find("$CALL(") == 0) {
if (cmd.size() == 6)
throw std::string("$CALL invocation: empty argument list!");
ret += "hooks::";
ret += std::string(cmd.begin() + 6, cmd.begin() + cparen);
ret += "()";
}
else if (cmd.find("$ENV(") == 0) {
if (cmd.size() == 5)
throw std::string("$ENV invocation: empty argument list!");
ret += "checkCString(std::getenv(\"";
ret += std::string(cmd.begin() + 5, cmd.begin() + cparen);
ret += "\"))";
}
else {
throw "Unknown special command: " + cmd;
}
if (cmd.begin() + cparen + 1 != cmd.end()) {
ret += " + std::string(\"";
ret += (cmd.c_str() + cparen + 1);
ret += "\")";
}
return ret;
}
/// EmitCmdLineVecFill - Emit code that fills in the command line
/// vector. Helper function used by EmitGenerateActionMethod().
void EmitCmdLineVecFill(const Init* CmdLine, const std::string& ToolName,
bool IsJoin, const char* IndentLevel,
std::ostream& O) {
StrVector StrVec;
SplitString(InitPtrToString(CmdLine), StrVec);
if (StrVec.empty())
throw "Tool " + ToolName + " has empty command line!";
StrVector::const_iterator I = StrVec.begin();
++I;
for (StrVector::const_iterator E = StrVec.end(); I != E; ++I) {
const std::string& cmd = *I;
O << IndentLevel;
if (cmd.at(0) == '$') {
if (cmd == "$INFILE") {
if (IsJoin)
O << "for (PathVector::const_iterator B = inFiles.begin()"
<< ", E = inFiles.end();\n"
<< IndentLevel << "B != E; ++B)\n"
<< IndentLevel << Indent1 << "vec.push_back(B->toString());\n";
else
O << "vec.push_back(inFile.toString());\n";
}
else if (cmd == "$OUTFILE") {
O << "vec.push_back(out_file);\n";
}
else {
O << "vec.push_back(" << SubstituteSpecialCommands(cmd);
O << ");\n";
}
}
else {
O << "vec.push_back(\"" << cmd << "\");\n";
}
}
O << IndentLevel << "cmd = "
<< ((StrVec[0][0] == '$') ? SubstituteSpecialCommands(StrVec[0])
: "\"" + StrVec[0] + "\"")
<< ";\n";
}
/// EmitCmdLineVecFillCallback - A function object wrapper around
/// EmitCmdLineVecFill(). Used by EmitGenerateActionMethod() as an
/// argument to EmitCaseConstructHandler().
class EmitCmdLineVecFillCallback {
bool IsJoin;
const std::string& ToolName;
public:
EmitCmdLineVecFillCallback(bool J, const std::string& TN)
: IsJoin(J), ToolName(TN) {}
void operator()(const Init* Statement, const char* IndentLevel,
std::ostream& O) const
{
EmitCmdLineVecFill(Statement, ToolName, IsJoin,
IndentLevel, O);
}
};
/// EmitForwardOptionPropertyHandlingCode - Helper function used to
/// implement EmitActionHandler. Emits code for
/// handling the (forward) and (forward_as) option properties.
void EmitForwardOptionPropertyHandlingCode (const OptionDescription& D,
const char* Indent,
const std::string& NewName,
std::ostream& O) {
const std::string& Name = NewName.empty()
? ("-" + D.Name)
: NewName;
switch (D.Type) {
case OptionType::Switch:
O << Indent << "vec.push_back(\"" << Name << "\");\n";
break;
case OptionType::Parameter:
O << Indent << "vec.push_back(\"" << Name << "\");\n";
O << Indent << "vec.push_back(" << D.GenVariableName() << ");\n";
break;
case OptionType::Prefix:
O << Indent << "vec.push_back(\"" << Name << "\" + "
<< D.GenVariableName() << ");\n";
break;
case OptionType::PrefixList:
O << Indent << "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName() << ".begin(),\n"
<< Indent << "E = " << D.GenVariableName() << ".end(); B != E; ++B)\n"
<< Indent << Indent1 << "vec.push_back(\"" << Name << "\" + "
<< "*B);\n";
break;
case OptionType::ParameterList:
O << Indent << "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName() << ".begin(),\n"
<< Indent << "E = " << D.GenVariableName()
<< ".end() ; B != E; ++B) {\n"
<< Indent << Indent1 << "vec.push_back(\"" << Name << "\");\n"
<< Indent << Indent1 << "vec.push_back(*B);\n"
<< Indent << "}\n";
break;
case OptionType::Alias:
default:
throw std::string("Aliases are not allowed in tool option descriptions!");
}
}
/// EmitActionHandler - Emit code that handles actions. Used by
/// EmitGenerateActionMethod() as an argument to
/// EmitCaseConstructHandler().
class EmitActionHandler {
const OptionDescriptions& OptDescs;
void processActionDag(const Init* Statement, const char* IndentLevel,
std::ostream& O) const
{
const DagInit& Dag = InitPtrToDag(Statement);
const std::string& ActionName = Dag.getOperator()->getAsString();
if (ActionName == "append_cmd") {
checkNumberOfArguments(&Dag, 1);
const std::string& Cmd = InitPtrToString(Dag.getArg(0));
O << IndentLevel << "vec.push_back(\"" << Cmd << "\");\n";
}
else if (ActionName == "error") {
O << IndentLevel << "throw std::runtime_error(\"" <<
(Dag.getNumArgs() >= 1 ? InitPtrToString(Dag.getArg(0))
: "Unknown error!")
<< "\");\n";
}
else if (ActionName == "forward") {
checkNumberOfArguments(&Dag, 1);
const std::string& Name = InitPtrToString(Dag.getArg(0));
EmitForwardOptionPropertyHandlingCode(OptDescs.FindOption(Name),
IndentLevel, "", O);
}
else if (ActionName == "forward_as") {
checkNumberOfArguments(&Dag, 2);
const std::string& Name = InitPtrToString(Dag.getArg(0));
const std::string& NewName = InitPtrToString(Dag.getArg(0));
EmitForwardOptionPropertyHandlingCode(OptDescs.FindOption(Name),
IndentLevel, NewName, O);
}
else if (ActionName == "output_suffix") {
checkNumberOfArguments(&Dag, 1);
const std::string& OutSuf = InitPtrToString(Dag.getArg(0));
O << IndentLevel << "output_suffix = \"" << OutSuf << "\";\n";
}
else if (ActionName == "stop_compilation") {
O << IndentLevel << "stop_compilation = true;\n";
}
else if (ActionName == "unpack_values") {
checkNumberOfArguments(&Dag, 1);
const std::string& Name = InitPtrToString(Dag.getArg(0));
const OptionDescription& D = OptDescs.FindOption(Name);
if (OptionType::IsList(D.Type)) {
O << IndentLevel << "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName() << ".begin(),\n"
<< IndentLevel << "E = " << D.GenVariableName()
<< ".end(); B != E; ++B)\n"
<< IndentLevel << Indent1 << "llvm::SplitString(*B, vec, \",\");\n";
}
else if (OptionType::IsParameter(D.Type)){
O << Indent3 << "llvm::SplitString("
<< D.GenVariableName() << ", vec, \",\");\n";
}
else {
throw "Option '" + D.Name +
"': switches can't have the 'unpack_values' property!";
}
}
else {
throw "Unknown action name: " + ActionName + "!";
}
}
public:
EmitActionHandler(const OptionDescriptions& OD)
: OptDescs(OD) {}
void operator()(const Init* Statement, const char* IndentLevel,
std::ostream& O) const
{
if (typeid(*Statement) == typeid(ListInit)) {
const ListInit& DagList = *static_cast<const ListInit*>(Statement);
for (ListInit::const_iterator B = DagList.begin(), E = DagList.end();
B != E; ++B)
this->processActionDag(*B, IndentLevel, O);
}
else {
this->processActionDag(Statement, IndentLevel, O);
}
}
};
// EmitGenerateActionMethod - Emit one of two versions of the
// Tool::GenerateAction() method.
void EmitGenerateActionMethod (const ToolDescription& D,
const OptionDescriptions& OptDescs,
bool IsJoin, std::ostream& O) {
if (IsJoin)
O << Indent1 << "Action GenerateAction(const PathVector& inFiles,\n";
else
O << Indent1 << "Action GenerateAction(const sys::Path& inFile,\n";
O << Indent2 << "bool HasChildren,\n"
<< Indent2 << "const llvm::sys::Path& TempDir,\n"
<< Indent2 << "const InputLanguagesSet& InLangs,\n"
<< Indent2 << "const LanguageMap& LangMap) const\n"
<< Indent1 << "{\n"
<< Indent2 << "std::string cmd;\n"
<< Indent2 << "std::vector<std::string> vec;\n"
<< Indent2 << "bool stop_compilation = !HasChildren;\n"
<< Indent2 << "const char* output_suffix = \"" << D.OutputSuffix << "\";\n"
<< Indent2 << "std::string out_file;\n\n";
// For every understood option, emit handling code.
if (D.Actions)
EmitCaseConstructHandler(D.Actions, Indent2, EmitActionHandler(OptDescs),
false, OptDescs, O);
O << '\n' << Indent2
<< "out_file = OutFilename(" << (IsJoin ? "sys::Path(),\n" : "inFile,\n")
<< Indent3 << "TempDir, stop_compilation, output_suffix).toString();\n\n";
// cmd_line is either a string or a 'case' construct.
if (!D.CmdLine)
throw "Tool " + D.Name + " has no cmd_line property!";
else if (typeid(*D.CmdLine) == typeid(StringInit))
EmitCmdLineVecFill(D.CmdLine, D.Name, IsJoin, Indent2, O);
else
EmitCaseConstructHandler(D.CmdLine, Indent2,
EmitCmdLineVecFillCallback(IsJoin, D.Name),
true, OptDescs, O);
// Handle the Sink property.
if (D.isSink()) {
O << Indent2 << "if (!" << SinkOptionName << ".empty()) {\n"
<< Indent3 << "vec.insert(vec.end(), "
<< SinkOptionName << ".begin(), " << SinkOptionName << ".end());\n"
<< Indent2 << "}\n";
}
O << Indent2 << "return Action(cmd, vec, stop_compilation, out_file);\n"
<< Indent1 << "}\n\n";
}
/// EmitGenerateActionMethods - Emit two GenerateAction() methods for
/// a given Tool class.
void EmitGenerateActionMethods (const ToolDescription& ToolDesc,
const OptionDescriptions& OptDescs,
std::ostream& O) {
if (!ToolDesc.isJoin())
O << Indent1 << "Action GenerateAction(const PathVector& inFiles,\n"
<< Indent2 << "bool HasChildren,\n"
<< Indent2 << "const llvm::sys::Path& TempDir,\n"
<< Indent2 << "const InputLanguagesSet& InLangs,\n"
<< Indent2 << "const LanguageMap& LangMap) const\n"
<< Indent1 << "{\n"
<< Indent2 << "throw std::runtime_error(\"" << ToolDesc.Name
<< " is not a Join tool!\");\n"
<< Indent1 << "}\n\n";
else
EmitGenerateActionMethod(ToolDesc, OptDescs, true, O);
EmitGenerateActionMethod(ToolDesc, OptDescs, false, O);
}
/// EmitInOutLanguageMethods - Emit the [Input,Output]Language()
/// methods for a given Tool class.
void EmitInOutLanguageMethods (const ToolDescription& D, std::ostream& O) {
O << Indent1 << "const char** InputLanguages() const {\n"
<< Indent2 << "return InputLanguages_;\n"
<< Indent1 << "}\n\n";
if (D.OutLanguage.empty())
throw "Tool " + D.Name + " has no 'out_language' property!";
O << Indent1 << "const char* OutputLanguage() const {\n"
<< Indent2 << "return \"" << D.OutLanguage << "\";\n"
<< Indent1 << "}\n\n";
}
/// EmitNameMethod - Emit the Name() method for a given Tool class.
void EmitNameMethod (const ToolDescription& D, std::ostream& O) {
O << Indent1 << "const char* Name() const {\n"
<< Indent2 << "return \"" << D.Name << "\";\n"
<< Indent1 << "}\n\n";
}
/// EmitIsJoinMethod - Emit the IsJoin() method for a given Tool
/// class.
void EmitIsJoinMethod (const ToolDescription& D, std::ostream& O) {
O << Indent1 << "bool IsJoin() const {\n";
if (D.isJoin())
O << Indent2 << "return true;\n";
else
O << Indent2 << "return false;\n";
O << Indent1 << "}\n\n";
}
/// EmitStaticMemberDefinitions - Emit static member definitions for a
/// given Tool class.
void EmitStaticMemberDefinitions(const ToolDescription& D, std::ostream& O) {
if (D.InLanguage.empty())
throw "Tool " + D.Name + " has no 'in_language' property!";
O << "const char* " << D.Name << "::InputLanguages_[] = {";
for (StrVector::const_iterator B = D.InLanguage.begin(),
E = D.InLanguage.end(); B != E; ++B)
O << '\"' << *B << "\", ";
O << "0};\n\n";
}
/// EmitToolClassDefinition - Emit a Tool class definition.
void EmitToolClassDefinition (const ToolDescription& D,
const OptionDescriptions& OptDescs,
std::ostream& O) {
if (D.Name == "root")
return;
// Header
O << "class " << D.Name << " : public ";
if (D.isJoin())
O << "JoinTool";
else
O << "Tool";
O << "{\nprivate:\n"
<< Indent1 << "static const char* InputLanguages_[];\n\n";
O << "public:\n";
EmitNameMethod(D, O);
EmitInOutLanguageMethods(D, O);
EmitIsJoinMethod(D, O);
EmitGenerateActionMethods(D, OptDescs, O);
// Close class definition
O << "};\n";
EmitStaticMemberDefinitions(D, O);
}
/// EmitOptionDefintions - Iterate over a list of option descriptions
/// and emit registration code.
void EmitOptionDefintions (const OptionDescriptions& descs,
bool HasSink, bool HasExterns,
std::ostream& O)
{
std::vector<OptionDescription> Aliases;
// Emit static cl::Option variables.
for (OptionDescriptions::const_iterator B = descs.begin(),
E = descs.end(); B!=E; ++B) {
const OptionDescription& val = B->second;
if (val.Type == OptionType::Alias) {
Aliases.push_back(val);
continue;
}
if (val.isExtern())
O << "extern ";
O << val.GenTypeDeclaration() << ' '
<< val.GenVariableName();
if (val.isExtern()) {
O << ";\n";
continue;
}
O << "(\"" << val.Name << '\"';
if (val.Type == OptionType::Prefix || val.Type == OptionType::PrefixList)
O << ", cl::Prefix";
if (val.isRequired()) {
switch (val.Type) {
case OptionType::PrefixList:
case OptionType::ParameterList:
O << ", cl::OneOrMore";
break;
default:
O << ", cl::Required";
}
}
if (val.isReallyHidden() || val.isHidden()) {
if (val.isRequired())
O << " |";
else
O << ",";
if (val.isReallyHidden())
O << " cl::ReallyHidden";
else
O << " cl::Hidden";
}
if (!val.Help.empty())
O << ", cl::desc(\"" << val.Help << "\")";
O << ");\n";
}
// Emit the aliases (they should go after all the 'proper' options).
for (std::vector<OptionDescription>::const_iterator
B = Aliases.begin(), E = Aliases.end(); B != E; ++B) {
const OptionDescription& val = *B;
O << val.GenTypeDeclaration() << ' '
<< val.GenVariableName()
<< "(\"" << val.Name << '\"';
const OptionDescription& D = descs.FindOption(val.Help);
O << ", cl::aliasopt(" << D.GenVariableName() << ")";
O << ", cl::desc(\"" << "An alias for -" + val.Help << "\"));\n";
}
// Emit the sink option.
if (HasSink)
O << (HasExterns ? "extern cl" : "cl")
<< "::list<std::string> " << SinkOptionName
<< (HasExterns ? ";\n" : "(cl::Sink);\n");
O << '\n';
}
/// EmitPopulateLanguageMap - Emit the PopulateLanguageMap() function.
void EmitPopulateLanguageMap (const RecordKeeper& Records, std::ostream& O)
{
// Generate code
O << "void PopulateLanguageMapLocal(LanguageMap& langMap) {\n";
// Get the relevant field out of RecordKeeper
const Record* LangMapRecord = Records.getDef("LanguageMap");
// It is allowed for a plugin to have no language map.
if (LangMapRecord) {
ListInit* LangsToSuffixesList = LangMapRecord->getValueAsListInit("map");
if (!LangsToSuffixesList)
throw std::string("Error in the language map definition!");
for (unsigned i = 0; i < LangsToSuffixesList->size(); ++i) {
const Record* LangToSuffixes = LangsToSuffixesList->getElementAsRecord(i);
const std::string& Lang = LangToSuffixes->getValueAsString("lang");
const ListInit* Suffixes = LangToSuffixes->getValueAsListInit("suffixes");
for (unsigned i = 0; i < Suffixes->size(); ++i)
O << Indent1 << "langMap[\""
<< InitPtrToString(Suffixes->getElement(i))
<< "\"] = \"" << Lang << "\";\n";
}
}
O << "}\n\n";
}
/// IncDecWeight - Helper function passed to EmitCaseConstructHandler()
/// by EmitEdgeClass().
void IncDecWeight (const Init* i, const char* IndentLevel,
std::ostream& O) {
const DagInit& d = InitPtrToDag(i);
const std::string& OpName = d.getOperator()->getAsString();
if (OpName == "inc_weight") {
O << IndentLevel << "ret += ";
}
else if (OpName == "dec_weight") {
O << IndentLevel << "ret -= ";
}
else if (OpName == "error") {
O << IndentLevel << "throw std::runtime_error(\"" <<
(d.getNumArgs() >= 1 ? InitPtrToString(d.getArg(0))
: "Unknown error!")
<< "\");\n";
return;
}
else
throw "Unknown operator in edge properties list: " + OpName + '!' +
"\nOnly 'inc_weight', 'dec_weight' and 'error' are allowed.";
if (d.getNumArgs() > 0)
O << InitPtrToInt(d.getArg(0)) << ";\n";
else
O << "2;\n";
}
/// EmitEdgeClass - Emit a single Edge# class.
void EmitEdgeClass (unsigned N, const std::string& Target,
DagInit* Case, const OptionDescriptions& OptDescs,
std::ostream& O) {
// Class constructor.
O << "class Edge" << N << ": public Edge {\n"
<< "public:\n"
<< Indent1 << "Edge" << N << "() : Edge(\"" << Target
<< "\") {}\n\n"
// Function Weight().
<< Indent1 << "unsigned Weight(const InputLanguagesSet& InLangs) const {\n"
<< Indent2 << "unsigned ret = 0;\n";
// Handle the 'case' construct.
EmitCaseConstructHandler(Case, Indent2, IncDecWeight, false, OptDescs, O);
O << Indent2 << "return ret;\n"
<< Indent1 << "};\n\n};\n\n";
}
/// EmitEdgeClasses - Emit Edge* classes that represent graph edges.
void EmitEdgeClasses (const RecordVector& EdgeVector,
const OptionDescriptions& OptDescs,
std::ostream& O) {
int i = 0;
for (RecordVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const Record* Edge = *B;
const std::string& NodeB = Edge->getValueAsString("b");
DagInit* Weight = Edge->getValueAsDag("weight");
if (!isDagEmpty(Weight))
EmitEdgeClass(i, NodeB, Weight, OptDescs, O);
++i;
}
}
/// EmitPopulateCompilationGraph - Emit the PopulateCompilationGraph()
/// function.
void EmitPopulateCompilationGraph (const RecordVector& EdgeVector,
const ToolDescriptions& ToolDescs,
std::ostream& O)
{
O << "void PopulateCompilationGraphLocal(CompilationGraph& G) {\n";
for (ToolDescriptions::const_iterator B = ToolDescs.begin(),
E = ToolDescs.end(); B != E; ++B)
O << Indent1 << "G.insertNode(new " << (*B)->Name << "());\n";
O << '\n';
// Insert edges.
int i = 0;
for (RecordVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const Record* Edge = *B;
const std::string& NodeA = Edge->getValueAsString("a");
const std::string& NodeB = Edge->getValueAsString("b");
DagInit* Weight = Edge->getValueAsDag("weight");
O << Indent1 << "G.insertEdge(\"" << NodeA << "\", ";
if (isDagEmpty(Weight))
O << "new SimpleEdge(\"" << NodeB << "\")";
else
O << "new Edge" << i << "()";
O << ");\n";
++i;
}
O << "}\n\n";
}
/// ExtractHookNames - Extract the hook names from all instances of
/// $CALL(HookName) in the provided command line string. Helper
/// function used by FillInHookNames().
class ExtractHookNames {
llvm::StringSet<>& HookNames_;
public:
ExtractHookNames(llvm::StringSet<>& HookNames)
: HookNames_(HookNames_) {}
void operator()(const Init* CmdLine) {
StrVector cmds;
llvm::SplitString(InitPtrToString(CmdLine), cmds);
for (StrVector::const_iterator B = cmds.begin(), E = cmds.end();
B != E; ++B) {
const std::string& cmd = *B;
if (cmd.find("$CALL(") == 0) {
if (cmd.size() == 6)
throw std::string("$CALL invocation: empty argument list!");
HookNames_.insert(std::string(cmd.begin() + 6,
cmd.begin() + cmd.find(")")));
}
}
}
};
/// FillInHookNames - Actually extract the hook names from all command
/// line strings. Helper function used by EmitHookDeclarations().
void FillInHookNames(const ToolDescriptions& ToolDescs,
llvm::StringSet<>& HookNames)
{
// For all command lines:
for (ToolDescriptions::const_iterator B = ToolDescs.begin(),
E = ToolDescs.end(); B != E; ++B) {
const ToolDescription& D = *(*B);
if (!D.CmdLine)
continue;
if (dynamic_cast<StringInit*>(D.CmdLine))
// This is a string.
ExtractHookNames(HookNames).operator()(D.CmdLine);
else
// This is a 'case' construct.
WalkCase(D.CmdLine, Id(), ExtractHookNames(HookNames));
}
}
/// EmitHookDeclarations - Parse CmdLine fields of all the tool
/// property records and emit hook function declaration for each
/// instance of $CALL(HookName).
void EmitHookDeclarations(const ToolDescriptions& ToolDescs, std::ostream& O) {
llvm::StringSet<> HookNames;
FillInHookNames(ToolDescs, HookNames);
if (HookNames.empty())
return;
O << "namespace hooks {\n";
for (StringSet<>::const_iterator B = HookNames.begin(), E = HookNames.end();
B != E; ++B)
O << Indent1 << "std::string " << B->first() << "();\n";
O << "}\n\n";
}
/// EmitRegisterPlugin - Emit code to register this plugin.
void EmitRegisterPlugin(int Priority, std::ostream& O) {
O << "struct Plugin : public llvmc::BasePlugin {\n\n"
<< Indent1 << "int Priority() const { return " << Priority << "; }\n\n"
<< Indent1 << "void PopulateLanguageMap(LanguageMap& langMap) const\n"
<< Indent1 << "{ PopulateLanguageMapLocal(langMap); }\n\n"
<< Indent1
<< "void PopulateCompilationGraph(CompilationGraph& graph) const\n"
<< Indent1 << "{ PopulateCompilationGraphLocal(graph); }\n"
<< "};\n\n"
<< "static llvmc::RegisterPlugin<Plugin> RP;\n\n";
}
/// EmitIncludes - Emit necessary #include directives and some
/// additional declarations.
void EmitIncludes(std::ostream& O) {
O << "#include \"llvm/CompilerDriver/CompilationGraph.h\"\n"
<< "#include \"llvm/CompilerDriver/Plugin.h\"\n"
<< "#include \"llvm/CompilerDriver/Tool.h\"\n\n"
<< "#include \"llvm/ADT/StringExtras.h\"\n"
<< "#include \"llvm/Support/CommandLine.h\"\n\n"
<< "#include <cstdlib>\n"
<< "#include <stdexcept>\n\n"
<< "using namespace llvm;\n"
<< "using namespace llvmc;\n\n"
<< "extern cl::opt<std::string> OutputFilename;\n\n"
<< "inline const char* checkCString(const char* s)\n"
<< "{ return s == NULL ? \"\" : s; }\n\n";
}
/// PluginData - Holds all information about a plugin.
struct PluginData {
OptionDescriptions OptDescs;
bool HasSink;
bool HasExterns;
ToolDescriptions ToolDescs;
RecordVector Edges;
int Priority;
};
/// HasSink - Go through the list of tool descriptions and check if
/// there are any with the 'sink' property set.
bool HasSink(const ToolDescriptions& ToolDescs) {
for (ToolDescriptions::const_iterator B = ToolDescs.begin(),
E = ToolDescs.end(); B != E; ++B)
if ((*B)->isSink())
return true;
return false;
}
/// HasExterns - Go through the list of option descriptions and check
/// if there are any external options.
bool HasExterns(const OptionDescriptions& OptDescs) {
for (OptionDescriptions::const_iterator B = OptDescs.begin(),
E = OptDescs.end(); B != E; ++B)
if (B->second.isExtern())
return true;
return false;
}
/// CollectPluginData - Collect tool and option properties,
/// compilation graph edges and plugin priority from the parse tree.
void CollectPluginData (const RecordKeeper& Records, PluginData& Data) {
// Collect option properties.
const RecordVector& OptionLists =
Records.getAllDerivedDefinitions("OptionList");
CollectOptionDescriptions(OptionLists.begin(), OptionLists.end(),
Data.OptDescs);
// Collect tool properties.
const RecordVector& Tools = Records.getAllDerivedDefinitions("Tool");
CollectToolDescriptions(Tools.begin(), Tools.end(), Data.ToolDescs);
Data.HasSink = HasSink(Data.ToolDescs);
Data.HasExterns = HasExterns(Data.OptDescs);
// Collect compilation graph edges.
const RecordVector& CompilationGraphs =
Records.getAllDerivedDefinitions("CompilationGraph");
FillInEdgeVector(CompilationGraphs.begin(), CompilationGraphs.end(),
Data.Edges);
// Calculate the priority of this plugin.
const RecordVector& Priorities =
Records.getAllDerivedDefinitions("PluginPriority");
Data.Priority = CalculatePriority(Priorities.begin(), Priorities.end());
}
/// CheckPluginData - Perform some sanity checks on the collected data.
void CheckPluginData(PluginData& Data) {
// Filter out all tools not mentioned in the compilation graph.
FilterNotInGraph(Data.Edges, Data.ToolDescs);
// Typecheck the compilation graph.
TypecheckGraph(Data.Edges, Data.ToolDescs);
// Check that there are no options without side effects (specified
// only in the OptionList).
CheckForSuperfluousOptions(Data.Edges, Data.ToolDescs, Data.OptDescs);
}
void EmitPluginCode(const PluginData& Data, std::ostream& O) {
// Emit file header.
EmitIncludes(O);
// Emit global option registration code.
EmitOptionDefintions(Data.OptDescs, Data.HasSink, Data.HasExterns, O);
// Emit hook declarations.
EmitHookDeclarations(Data.ToolDescs, O);
O << "namespace {\n\n";
// Emit PopulateLanguageMap() function
// (a language map maps from file extensions to language names).
EmitPopulateLanguageMap(Records, O);
// Emit Tool classes.
for (ToolDescriptions::const_iterator B = Data.ToolDescs.begin(),
E = Data.ToolDescs.end(); B!=E; ++B)
EmitToolClassDefinition(*(*B), Data.OptDescs, O);
// Emit Edge# classes.
EmitEdgeClasses(Data.Edges, Data.OptDescs, O);
// Emit PopulateCompilationGraph() function.
EmitPopulateCompilationGraph(Data.Edges, Data.ToolDescs, O);
// Emit code for plugin registration.
EmitRegisterPlugin(Data.Priority, O);
O << "} // End anonymous namespace.\n";
// EOF
}
// End of anonymous namespace
}
/// run - The back-end entry point.
void LLVMCConfigurationEmitter::run (std::ostream &O) {
try {
PluginData Data;
CollectPluginData(Records, Data);
CheckPluginData(Data);
EmitSourceFileHeader("LLVMC Configuration Library", O);
EmitPluginCode(Data, O);
} catch (std::exception& Error) {
throw Error.what() + std::string(" - usually this means a syntax error.");
}
}
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