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llvm-mirror/utils/TableGen/LLVMCConfigurationEmitter.cpp
Chris Lattner 7a86b354fc more dead thing zapping. 
llvm-svn: 112353
2010-08-28 03:43:50 +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/StringMap.h"
#include "llvm/ADT/StringSet.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<const DagInit*> DagVector;
typedef std::vector<std::string> StrVector;
//===----------------------------------------------------------------------===//
/// Constants
// Indentation.
const unsigned TabWidth = 4;
const unsigned Indent1 = TabWidth*1;
const unsigned Indent2 = TabWidth*2;
const unsigned Indent3 = TabWidth*3;
const unsigned Indent4 = TabWidth*4;
// Default help string.
const char * const DefaultHelpString = "NO HELP MESSAGE PROVIDED";
// Name for the "sink" option.
const char * const SinkOptionName = "SinkOption";
//===----------------------------------------------------------------------===//
/// Helper functions
/// Id - An 'identity' function object.
struct Id {
template<typename T0>
void operator()(const T0&) const {
}
template<typename T0, typename T1>
void operator()(const T0&, const T1&) const {
}
template<typename T0, typename T1, typename T2>
void operator()(const T0&, const T1&, const T2&) 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;
}
const std::string GetOperatorName(const DagInit& D) {
return D.getOperator()->getAsString();
}
/// CheckBooleanConstant - Check that the provided value is a boolean constant.
void CheckBooleanConstant(const Init* I) {
const DefInit& val = dynamic_cast<const DefInit&>(*I);
const std::string& str = val.getAsString();
if (str != "true" && str != "false") {
throw "Incorrect boolean value: '" + str +
"': must be either 'true' or 'false'";
}
}
// CheckNumberOfArguments - Ensure that the number of args in d is
// greater than or equal to min_arguments, otherwise throw an exception.
void CheckNumberOfArguments (const DagInit& d, unsigned minArgs) {
if (d.getNumArgs() < minArgs)
throw GetOperatorName(d) + ": too few arguments!";
}
// 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;
}
/// EscapeQuotes - Replace '"' with '\"'.
std::string EscapeQuotes (const std::string& Var) {
std::string ret;
for (unsigned i = 0; i != Var.size(); ++i) {
char cur_char = Var[i];
if (cur_char == '"') {
ret += "\\\"";
}
else {
ret.push_back(cur_char);
}
}
return ret;
}
/// OneOf - Does the input string contain this character?
bool OneOf(const char* lst, char c) {
while (*lst) {
if (*lst++ == c)
return true;
}
return false;
}
template <class I, class S>
void CheckedIncrement(I& P, I E, S ErrorString) {
++P;
if (P == E)
throw ErrorString;
}
// apply is needed because C++'s syntax doesn't let us construct a function
// object and call it in the same statement.
template<typename F, typename T0>
void apply(F Fun, T0& Arg0) {
return Fun(Arg0);
}
template<typename F, typename T0, typename T1>
void apply(F Fun, T0& Arg0, T1& Arg1) {
return Fun(Arg0, Arg1);
}
//===----------------------------------------------------------------------===//
/// Back-end specific code
/// OptionType - One of six different option types. See the
/// documentation for detailed description of differences.
namespace OptionType {
enum OptionType { Alias, Switch, SwitchList,
Parameter, ParameterList, Prefix, PrefixList };
bool IsAlias(OptionType t) {
return (t == Alias);
}
bool IsList (OptionType t) {
return (t == SwitchList || t == ParameterList || t == PrefixList);
}
bool IsSwitch (OptionType t) {
return (t == Switch);
}
bool IsSwitchList (OptionType t) {
return (t == SwitchList);
}
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 == "switch_list_option")
return OptionType::SwitchList;
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, OneOrMore = 0x8,
Optional = 0x10, CommaSeparated = 0x20,
ForwardNotSplit = 0x40, ZeroOrMore = 0x80 };
}
/// OptionDescription - Represents data contained in a single
/// OptionList entry.
struct OptionDescription {
OptionType::OptionType Type;
std::string Name;
unsigned Flags;
std::string Help;
unsigned MultiVal;
Init* InitVal;
OptionDescription(OptionType::OptionType t = OptionType::Switch,
const std::string& n = "",
const std::string& h = DefaultHelpString)
: Type(t), Name(n), Flags(0x0), Help(h), MultiVal(1), InitVal(0)
{}
/// 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
{ return "autogenerated::" + GenOptionType() + EscapeVariableName(Name); }
/// GenPlainVariableName - Returns the variable name without the namespace
/// prefix.
std::string GenPlainVariableName() const
{ return GenOptionType() + EscapeVariableName(Name); }
/// Merge - Merge two option descriptions.
void Merge (const OptionDescription& other);
/// CheckConsistency - Check that the flags are consistent.
void CheckConsistency() const;
// Misc convenient getters/setters.
bool isAlias() const;
bool isMultiVal() const;
bool isCommaSeparated() const;
void setCommaSeparated();
bool isForwardNotSplit() const;
void setForwardNotSplit();
bool isRequired() const;
void setRequired();
bool isOneOrMore() const;
void setOneOrMore();
bool isZeroOrMore() const;
void setZeroOrMore();
bool isOptional() const;
void setOptional();
bool isHidden() const;
void setHidden();
bool isReallyHidden() const;
void setReallyHidden();
bool isSwitch() const
{ return OptionType::IsSwitch(this->Type); }
bool isSwitchList() const
{ return OptionType::IsSwitchList(this->Type); }
bool isParameter() const
{ return OptionType::IsParameter(this->Type); }
bool isList() const
{ return OptionType::IsList(this->Type); }
bool isParameterList() const
{ return (OptionType::IsList(this->Type)
&& !OptionType::IsSwitchList(this->Type)); }
private:
// GenOptionType - Helper function used by GenVariableName().
std::string GenOptionType() const;
};
void OptionDescription::CheckConsistency() const {
unsigned i = 0;
i += this->isRequired();
i += this->isOptional();
i += this->isOneOrMore();
i += this->isZeroOrMore();
if (i > 1) {
throw "Only one of (required), (optional), (one_or_more) or "
"(zero_or_more) properties is allowed!";
}
}
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::errs() << "Warning: several different help strings"
" defined for option " + Name + "\n";
}
Flags |= other.Flags;
}
bool OptionDescription::isAlias() const {
return OptionType::IsAlias(this->Type);
}
bool OptionDescription::isMultiVal() const {
return MultiVal > 1;
}
bool OptionDescription::isCommaSeparated() const {
return Flags & OptionDescriptionFlags::CommaSeparated;
}
void OptionDescription::setCommaSeparated() {
Flags |= OptionDescriptionFlags::CommaSeparated;
}
bool OptionDescription::isForwardNotSplit() const {
return Flags & OptionDescriptionFlags::ForwardNotSplit;
}
void OptionDescription::setForwardNotSplit() {
Flags |= OptionDescriptionFlags::ForwardNotSplit;
}
bool OptionDescription::isRequired() const {
return Flags & OptionDescriptionFlags::Required;
}
void OptionDescription::setRequired() {
Flags |= OptionDescriptionFlags::Required;
}
bool OptionDescription::isOneOrMore() const {
return Flags & OptionDescriptionFlags::OneOrMore;
}
void OptionDescription::setOneOrMore() {
Flags |= OptionDescriptionFlags::OneOrMore;
}
bool OptionDescription::isZeroOrMore() const {
return Flags & OptionDescriptionFlags::ZeroOrMore;
}
void OptionDescription::setZeroOrMore() {
Flags |= OptionDescriptionFlags::ZeroOrMore;
}
bool OptionDescription::isOptional() const {
return Flags & OptionDescriptionFlags::Optional;
}
void OptionDescription::setOptional() {
Flags |= OptionDescriptionFlags::Optional;
}
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::SwitchList:
return "cl::list<bool>";
case OptionType::Parameter:
case OptionType::Prefix:
default:
return "cl::opt<std::string>";
}
}
std::string OptionDescription::GenOptionType() const {
switch (Type) {
case OptionType::Alias:
return "Alias_";
case OptionType::PrefixList:
case OptionType::ParameterList:
return "List_";
case OptionType::Switch:
return "Switch_";
case OptionType::SwitchList:
return "SwitchList_";
case OptionType::Prefix:
case OptionType::Parameter:
default:
return "Parameter_";
}
}
/// 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;
// Wrappers for FindOption that throw an exception in case the option has a
// wrong type.
const OptionDescription& FindSwitch(const std::string& OptName) const;
const OptionDescription& FindParameter(const std::string& OptName) const;
const OptionDescription& FindParameterList(const std::string& OptName) const;
const OptionDescription&
FindListOrParameter(const std::string& OptName) const;
const OptionDescription&
FindParameterListOrParameter(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!";
}
const OptionDescription&
OptionDescriptions::FindSwitch(const std::string& OptName) const {
const OptionDescription& OptDesc = this->FindOption(OptName);
if (!OptDesc.isSwitch())
throw OptName + ": incorrect option type - should be a switch!";
return OptDesc;
}
const OptionDescription&
OptionDescriptions::FindParameterList(const std::string& OptName) const {
const OptionDescription& OptDesc = this->FindOption(OptName);
if (!OptDesc.isList() || OptDesc.isSwitchList())
throw OptName + ": incorrect option type - should be a parameter list!";
return OptDesc;
}
const OptionDescription&
OptionDescriptions::FindParameter(const std::string& OptName) const {
const OptionDescription& OptDesc = this->FindOption(OptName);
if (!OptDesc.isParameter())
throw OptName + ": incorrect option type - should be a parameter!";
return OptDesc;
}
const OptionDescription&
OptionDescriptions::FindListOrParameter(const std::string& OptName) const {
const OptionDescription& OptDesc = this->FindOption(OptName);
if (!OptDesc.isList() && !OptDesc.isParameter())
throw OptName
+ ": incorrect option type - should be a list or parameter!";
return OptDesc;
}
const OptionDescription&
OptionDescriptions::FindParameterListOrParameter
(const std::string& OptName) const {
const OptionDescription& OptDesc = this->FindOption(OptName);
if ((!OptDesc.isList() && !OptDesc.isParameter()) || OptDesc.isSwitchList())
throw OptName
+ ": incorrect option type - should be a parameter list or parameter!";
return OptDesc;
}
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 <typename Handler>
class HandlerTable {
protected:
// Implementation details.
/// HandlerMap - A map from property names to property handlers
typedef StringMap<Handler> HandlerMap;
static HandlerMap Handlers_;
static bool staticMembersInitialized_;
public:
Handler GetHandler (const std::string& HandlerName) const {
typename HandlerMap::iterator method = Handlers_.find(HandlerName);
if (method != Handlers_.end()) {
Handler h = method->second;
return h;
}
else {
throw "No handler found for property " + HandlerName + "!";
}
}
void AddHandler(const char* Property, Handler H) {
Handlers_[Property] = H;
}
};
template <class Handler, class FunctionObject>
Handler GetHandler(FunctionObject* Obj, const DagInit& Dag) {
const std::string& HandlerName = GetOperatorName(Dag);
return Obj->GetHandler(HandlerName);
}
template <class FunctionObject>
void InvokeDagInitHandler(FunctionObject* Obj, Init* I) {
typedef void (FunctionObject::*Handler) (const DagInit&);
const DagInit& Dag = InitPtrToDag(I);
Handler h = GetHandler<Handler>(Obj, Dag);
((Obj)->*(h))(Dag);
}
template <class FunctionObject>
void InvokeDagInitHandler(const FunctionObject* const Obj,
const Init* I, unsigned IndentLevel, raw_ostream& O)
{
typedef void (FunctionObject::*Handler)
(const DagInit&, unsigned IndentLevel, raw_ostream& O) const;
const DagInit& Dag = InitPtrToDag(I);
Handler h = GetHandler<Handler>(Obj, Dag);
((Obj)->*(h))(Dag, IndentLevel, O);
}
template <typename H>
typename HandlerTable<H>::HandlerMap HandlerTable<H>::Handlers_;
template <typename H>
bool HandlerTable<H>::staticMembersInitialized_ = false;
/// CollectOptionProperties - Function object for iterating over an
/// option property list.
class CollectOptionProperties;
typedef void (CollectOptionProperties::* CollectOptionPropertiesHandler)
(const DagInit&);
class CollectOptionProperties
: public HandlerTable<CollectOptionPropertiesHandler>
{
private:
/// optDescs_ - OptionDescriptions table. This is where the
/// information is stored.
OptionDescription& optDesc_;
public:
explicit CollectOptionProperties(OptionDescription& OD)
: optDesc_(OD)
{
if (!staticMembersInitialized_) {
AddHandler("help", &CollectOptionProperties::onHelp);
AddHandler("hidden", &CollectOptionProperties::onHidden);
AddHandler("init", &CollectOptionProperties::onInit);
AddHandler("multi_val", &CollectOptionProperties::onMultiVal);
AddHandler("one_or_more", &CollectOptionProperties::onOneOrMore);
AddHandler("zero_or_more", &CollectOptionProperties::onZeroOrMore);
AddHandler("really_hidden", &CollectOptionProperties::onReallyHidden);
AddHandler("required", &CollectOptionProperties::onRequired);
AddHandler("optional", &CollectOptionProperties::onOptional);
AddHandler("comma_separated", &CollectOptionProperties::onCommaSeparated);
AddHandler("forward_not_split",
&CollectOptionProperties::onForwardNotSplit);
staticMembersInitialized_ = true;
}
}
/// operator() - Just forwards to the corresponding property
/// handler.
void operator() (Init* I) {
InvokeDagInitHandler(this, I);
}
private:
/// Option property handlers --
/// Methods that handle option properties such as (help) or (hidden).
void onHelp (const DagInit& d) {
CheckNumberOfArguments(d, 1);
optDesc_.Help = EscapeQuotes(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 onCommaSeparated (const DagInit& d) {
CheckNumberOfArguments(d, 0);
if (!optDesc_.isParameterList())
throw "'comma_separated' is valid only on parameter list options!";
optDesc_.setCommaSeparated();
}
void onForwardNotSplit (const DagInit& d) {
CheckNumberOfArguments(d, 0);
if (!optDesc_.isParameter())
throw "'forward_not_split' is valid only for parameter options!";
optDesc_.setForwardNotSplit();
}
void onRequired (const DagInit& d) {
CheckNumberOfArguments(d, 0);
optDesc_.setRequired();
optDesc_.CheckConsistency();
}
void onInit (const DagInit& d) {
CheckNumberOfArguments(d, 1);
Init* i = d.getArg(0);
const std::string& str = i->getAsString();
bool correct = optDesc_.isParameter() && dynamic_cast<StringInit*>(i);
correct |= (optDesc_.isSwitch() && (str == "true" || str == "false"));
if (!correct)
throw "Incorrect usage of the 'init' option property!";
optDesc_.InitVal = i;
}
void onOneOrMore (const DagInit& d) {
CheckNumberOfArguments(d, 0);
optDesc_.setOneOrMore();
optDesc_.CheckConsistency();
}
void onZeroOrMore (const DagInit& d) {
CheckNumberOfArguments(d, 0);
if (optDesc_.isList())
llvm::errs() << "Warning: specifying the 'zero_or_more' property "
"on a list option has no effect.\n";
optDesc_.setZeroOrMore();
optDesc_.CheckConsistency();
}
void onOptional (const DagInit& d) {
CheckNumberOfArguments(d, 0);
if (!optDesc_.isList())
llvm::errs() << "Warning: specifying the 'optional' property"
"on a non-list option has no effect.\n";
optDesc_.setOptional();
optDesc_.CheckConsistency();
}
void onMultiVal (const DagInit& d) {
CheckNumberOfArguments(d, 1);
int val = InitPtrToInt(d.getArg(0));
if (val < 2)
throw "Error in the 'multi_val' property: "
"the value must be greater than 1!";
if (!optDesc_.isParameterList())
throw "The multi_val property is valid only on list options!";
optDesc_.MultiVal = val;
}
};
/// 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(GetOperatorName(d));
const std::string& Name = InitPtrToString(d.getArg(0));
OptionDescription OD(Type, Name);
CheckNumberOfArguments(d, 2);
if (OD.isAlias()) {
// Aliases store the aliased option name in the 'Help' field.
OD.Help = InitPtrToString(d.getArg(1));
}
else {
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 (const RecordVector& V,
OptionDescriptions& OptDescs)
{
// For every OptionList:
for (RecordVector::const_iterator B = V.begin(),
E = V.end(); B!=E; ++B) {
// Throws an exception if the value does not exist.
ListInit* PropList = (*B)->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 InFileOption;
std::string OutFileOption;
std::string OutLanguage;
std::string OutputSuffix;
unsigned Flags;
const Init* OnEmpty;
// 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 (const std::string &n = "")
: Name(n), CmdLine(0), Actions(0), OutFileOption("-o"),
Flags(0), OnEmpty(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;
typedef void (CollectToolProperties::* CollectToolPropertiesHandler)
(const DagInit&);
class CollectToolProperties : public HandlerTable<CollectToolPropertiesHandler>
{
private:
/// toolDesc_ - Properties of the current Tool. This is where the
/// information is stored.
ToolDescription& toolDesc_;
public:
explicit CollectToolProperties (ToolDescription& d)
: toolDesc_(d)
{
if (!staticMembersInitialized_) {
AddHandler("actions", &CollectToolProperties::onActions);
AddHandler("command", &CollectToolProperties::onCommand);
AddHandler("in_language", &CollectToolProperties::onInLanguage);
AddHandler("join", &CollectToolProperties::onJoin);
AddHandler("out_language", &CollectToolProperties::onOutLanguage);
AddHandler("out_file_option", &CollectToolProperties::onOutFileOption);
AddHandler("in_file_option", &CollectToolProperties::onInFileOption);
AddHandler("output_suffix", &CollectToolProperties::onOutputSuffix);
AddHandler("sink", &CollectToolProperties::onSink);
AddHandler("works_on_empty", &CollectToolProperties::onWorksOnEmpty);
staticMembersInitialized_ = true;
}
}
void operator() (Init* I) {
InvokeDagInitHandler(this, I);
}
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) ||
GetOperatorName(static_cast<DagInit&>(*Case)) != "case")
throw "The argument to (actions) should be a 'case' construct!";
toolDesc_.Actions = Case;
}
void onCommand (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 onOutFileOption (const DagInit& d) {
CheckNumberOfArguments(d, 1);
toolDesc_.OutFileOption = InitPtrToString(d.getArg(0));
}
void onInFileOption (const DagInit& d) {
CheckNumberOfArguments(d, 1);
toolDesc_.InFileOption = 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();
}
void onWorksOnEmpty (const DagInit& d) {
toolDesc_.OnEmpty = d.getArg(0);
}
};
/// CollectToolDescriptions - Gather information about tool properties
/// from the parsed TableGen data (basically a wrapper for the
/// CollectToolProperties function object).
void CollectToolDescriptions (const RecordVector& Tools,
ToolDescriptions& ToolDescs)
{
// Iterate over a properties list of every Tool definition
for (RecordVector::const_iterator B = Tools.begin(),
E = Tools.end(); 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(const RecordVector& CompilationGraphs,
DagVector& Out) {
for (RecordVector::const_iterator B = CompilationGraphs.begin(),
E = CompilationGraphs.end(); B != E; ++B) {
const ListInit* Edges = (*B)->getValueAsListInit("edges");
for (ListInit::const_iterator B = Edges->begin(),
E = Edges->end(); B != E; ++B) {
Out.push_back(&InitPtrToDag(*B));
}
}
}
/// 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 DagVector& EdgeVector,
ToolDescriptions& ToolDescs) {
// List all tools mentioned in the graph.
llvm::StringSet<> ToolsInGraph;
for (DagVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const DagInit* Edge = *B;
const std::string& NodeA = InitPtrToString(Edge->getArg(0));
const std::string& NodeB = InitPtrToString(Edge->getArg(1));
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.
void TypecheckGraph (const DagVector& 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 (DagVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const DagInit* Edge = *B;
const std::string& NodeA = InitPtrToString(Edge->getArg(0));
const std::string& NodeB = InitPtrToString(Edge->getArg(1));
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 "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 (that is, they are passed directly to TestCallback).
/// TestCallback must have type 'void TestCallback(const DagInit*, unsigned
/// IndentLevel, bool FirstTest)'.
/// StatementCallback must have type 'void StatementCallback(const Init*,
/// unsigned IndentLevel)'.
template <typename F1, typename F2>
void WalkCase(const Init* Case, F1 TestCallback, F2 StatementCallback,
unsigned IndentLevel = 0)
{
const DagInit& d = InitPtrToDag(Case);
// Error checks.
if (GetOperatorName(d) != "case")
throw "WalkCase should be invoked only on 'case' expressions!";
if (d.getNumArgs() < 2)
throw "There should be at least one clause in the 'case' expression:\n"
+ d.getAsString();
// Main loop.
bool even = false;
const unsigned numArgs = d.getNumArgs();
unsigned i = 1;
for (DagInit::const_arg_iterator B = d.arg_begin(), E = d.arg_end();
B != E; ++B) {
Init* arg = *B;
if (!even)
{
// Handle test.
const DagInit& Test = InitPtrToDag(arg);
if (GetOperatorName(Test) == "default" && (i+1 != numArgs))
throw "The 'default' clause should be the last in the "
"'case' construct!";
if (i == numArgs)
throw "Case construct handler: no corresponding action "
"found for the test " + Test.getAsString() + '!';
TestCallback(Test, IndentLevel, (i == 1));
}
else
{
if (dynamic_cast<DagInit*>(arg)
&& GetOperatorName(static_cast<DagInit&>(*arg)) == "case") {
// Nested 'case'.
WalkCase(arg, TestCallback, StatementCallback, IndentLevel + Indent1);
}
// Handle statement.
StatementCallback(arg, IndentLevel);
}
++i;
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 = GetOperatorName(Stmt);
if (ActionName == "forward" || ActionName == "forward_as" ||
ActionName == "forward_value" ||
ActionName == "forward_transformed_value" ||
ActionName == "switch_on" || ActionName == "any_switch_on" ||
ActionName == "parameter_equals" ||
ActionName == "element_in_list" || ActionName == "not_empty" ||
ActionName == "empty") {
CheckNumberOfArguments(Stmt, 1);
Init* Arg = Stmt.getArg(0);
if (typeid(*Arg) == typeid(StringInit)) {
const std::string& Name = InitPtrToString(Arg);
OptionNames_.insert(Name);
}
else {
// It's a list.
const ListInit& List = InitPtrToList(Arg);
for (ListInit::const_iterator B = List.begin(), E = List.end();
B != E; ++B) {
const std::string& Name = InitPtrToString(*B);
OptionNames_.insert(Name);
}
}
}
else if (ActionName == "and" || ActionName == "or" || ActionName == "not") {
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);
}
}
void operator()(const DagInit& Test, unsigned, bool) {
this->operator()(&Test);
}
void operator()(const Init* Statement, unsigned) {
this->operator()(Statement);
}
};
/// IsOptionalEdge - Validate that the 'optional_edge' has proper structure.
bool IsOptionalEdge (const DagInit& Edg) {
return (GetOperatorName(Edg) == "optional_edge") && (Edg.getNumArgs() > 2);
}
/// CheckForSuperfluousOptions - Check that there are no side
/// effect-free options (specified only in the OptionList). Otherwise,
/// output a warning.
void CheckForSuperfluousOptions (const DagVector& EdgeVector,
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 (DagVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const DagInit& Edge = **B;
if (IsOptionalEdge(Edge)) {
const DagInit& Weight = InitPtrToDag(Edge.getArg(2));
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::errs() << "Warning: option '-" << Val.Name << "' has no effect! "
"Probable cause: this option is specified only in the OptionList.\n";
}
}
/// EmitCaseTest0Args - Helper function used by EmitCaseConstructHandler().
bool EmitCaseTest0Args(const std::string& TestName, raw_ostream& O) {
if (TestName == "single_input_file") {
O << "InputFilenames.size() == 1";
return true;
}
else if (TestName == "multiple_input_files") {
O << "InputFilenames.size() > 1";
return true;
}
return false;
}
/// EmitListTest - Helper function used by EmitCaseTest1ArgList().
template <typename F>
void EmitListTest(const ListInit& L, const char* LogicOp,
F Callback, raw_ostream& O)
{
// This is a lot like EmitLogicalOperationTest, but works on ListInits instead
// of Dags...
bool isFirst = true;
for (ListInit::const_iterator B = L.begin(), E = L.end(); B != E; ++B) {
if (isFirst)
isFirst = false;
else
O << ' ' << LogicOp << ' ';
Callback(InitPtrToString(*B), O);
}
}
// Callbacks for use with EmitListTest.
class EmitSwitchOn {
const OptionDescriptions& OptDescs_;
public:
EmitSwitchOn(const OptionDescriptions& OptDescs) : OptDescs_(OptDescs)
{}
void operator()(const std::string& OptName, raw_ostream& O) const {
const OptionDescription& OptDesc = OptDescs_.FindSwitch(OptName);
O << OptDesc.GenVariableName();
}
};
class EmitEmptyTest {
bool EmitNegate_;
const OptionDescriptions& OptDescs_;
public:
EmitEmptyTest(bool EmitNegate, const OptionDescriptions& OptDescs)
: EmitNegate_(EmitNegate), OptDescs_(OptDescs)
{}
void operator()(const std::string& OptName, raw_ostream& O) const {
const char* Neg = (EmitNegate_ ? "!" : "");
if (OptName == "o") {
O << Neg << "OutputFilename.empty()";
}
else if (OptName == "save-temps") {
O << Neg << "(SaveTemps == SaveTempsEnum::Unset)";
}
else {
const OptionDescription& OptDesc = OptDescs_.FindListOrParameter(OptName);
O << Neg << OptDesc.GenVariableName() << ".empty()";
}
}
};
/// EmitCaseTest1ArgList - Helper function used by EmitCaseTest1Arg();
bool EmitCaseTest1ArgList(const std::string& TestName,
const DagInit& d,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
const ListInit& L = InitPtrToList(d.getArg(0));
if (TestName == "any_switch_on") {
EmitListTest(L, "||", EmitSwitchOn(OptDescs), O);
return true;
}
else if (TestName == "switch_on") {
EmitListTest(L, "&&", EmitSwitchOn(OptDescs), O);
return true;
}
else if (TestName == "any_not_empty") {
EmitListTest(L, "||", EmitEmptyTest(true, OptDescs), O);
return true;
}
else if (TestName == "any_empty") {
EmitListTest(L, "||", EmitEmptyTest(false, OptDescs), O);
return true;
}
else if (TestName == "not_empty") {
EmitListTest(L, "&&", EmitEmptyTest(true, OptDescs), O);
return true;
}
else if (TestName == "empty") {
EmitListTest(L, "&&", EmitEmptyTest(false, OptDescs), O);
return true;
}
return false;
}
/// EmitCaseTest1ArgStr - Helper function used by EmitCaseTest1Arg();
bool EmitCaseTest1ArgStr(const std::string& TestName,
const DagInit& d,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
const std::string& OptName = InitPtrToString(d.getArg(0));
if (TestName == "switch_on") {
apply(EmitSwitchOn(OptDescs), OptName, O);
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") {
bool EmitNegate = (TestName == "not_empty");
apply(EmitEmptyTest(EmitNegate, OptDescs), OptName, O);
return true;
}
return false;
}
/// EmitCaseTest1Arg - Helper function used by EmitCaseConstructHandler();
bool EmitCaseTest1Arg(const std::string& TestName,
const DagInit& d,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
CheckNumberOfArguments(d, 1);
if (typeid(*d.getArg(0)) == typeid(ListInit))
return EmitCaseTest1ArgList(TestName, d, OptDescs, O);
else
return EmitCaseTest1ArgStr(TestName, d, OptDescs, O);
}
/// EmitCaseTest2Args - Helper function used by EmitCaseConstructHandler().
bool EmitCaseTest2Args(const std::string& TestName,
const DagInit& d,
unsigned IndentLevel,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
CheckNumberOfArguments(d, 2);
const std::string& OptName = InitPtrToString(d.getArg(0));
const std::string& OptArg = InitPtrToString(d.getArg(1));
if (TestName == "parameter_equals") {
const OptionDescription& OptDesc = OptDescs.FindParameter(OptName);
O << OptDesc.GenVariableName() << " == \"" << OptArg << "\"";
return true;
}
else if (TestName == "element_in_list") {
const OptionDescription& OptDesc = OptDescs.FindParameterList(OptName);
const std::string& VarName = OptDesc.GenVariableName();
O << "std::find(" << VarName << ".begin(),\n";
O.indent(IndentLevel + Indent1)
<< VarName << ".end(), \""
<< OptArg << "\") != " << VarName << ".end()";
return true;
}
return false;
}
// Forward declaration.
// EmitLogicalOperationTest and EmitCaseTest are mutually recursive.
void EmitCaseTest(const DagInit& d, unsigned IndentLevel,
const OptionDescriptions& OptDescs,
raw_ostream& O);
/// EmitLogicalOperationTest - Helper function used by
/// EmitCaseConstructHandler.
void EmitLogicalOperationTest(const DagInit& d, const char* LogicOp,
unsigned IndentLevel,
const OptionDescriptions& OptDescs,
raw_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";
O.indent(IndentLevel + Indent1) << ' ' << LogicOp << " (";
}
else {
O << ')';
}
}
}
void EmitLogicalNot(const DagInit& d, unsigned IndentLevel,
const OptionDescriptions& OptDescs, raw_ostream& O)
{
CheckNumberOfArguments(d, 1);
const DagInit& InnerTest = InitPtrToDag(d.getArg(0));
O << "! (";
EmitCaseTest(InnerTest, IndentLevel, OptDescs, O);
O << ")";
}
/// EmitCaseTest - Helper function used by EmitCaseConstructHandler.
void EmitCaseTest(const DagInit& d, unsigned IndentLevel,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
const std::string& TestName = GetOperatorName(d);
if (TestName == "and")
EmitLogicalOperationTest(d, "&&", IndentLevel, OptDescs, O);
else if (TestName == "or")
EmitLogicalOperationTest(d, "||", IndentLevel, OptDescs, O);
else if (TestName == "not")
EmitLogicalNot(d, IndentLevel, OptDescs, O);
else if (EmitCaseTest0Args(TestName, O))
return;
else if (EmitCaseTest1Arg(TestName, d, OptDescs, O))
return;
else if (EmitCaseTest2Args(TestName, d, IndentLevel, OptDescs, O))
return;
else
throw "Unknown test '" + TestName + "' used in the 'case' construct!";
}
/// EmitCaseTestCallback - Callback used by EmitCaseConstructHandler.
class EmitCaseTestCallback {
bool EmitElseIf_;
const OptionDescriptions& OptDescs_;
raw_ostream& O_;
public:
EmitCaseTestCallback(bool EmitElseIf,
const OptionDescriptions& OptDescs, raw_ostream& O)
: EmitElseIf_(EmitElseIf), OptDescs_(OptDescs), O_(O)
{}
void operator()(const DagInit& Test, unsigned IndentLevel, bool FirstTest)
{
if (GetOperatorName(Test) == "default") {
O_.indent(IndentLevel) << "else {\n";
}
else {
O_.indent(IndentLevel)
<< ((!FirstTest && EmitElseIf_) ? "else if (" : "if (");
EmitCaseTest(Test, IndentLevel, OptDescs_, O_);
O_ << ") {\n";
}
}
};
/// EmitCaseStatementCallback - Callback used by EmitCaseConstructHandler.
template <typename F>
class EmitCaseStatementCallback {
F Callback_;
raw_ostream& O_;
public:
EmitCaseStatementCallback(F Callback, raw_ostream& O)
: Callback_(Callback), O_(O)
{}
void operator() (const Init* Statement, unsigned IndentLevel) {
// Ignore nested 'case' DAG.
if (!(dynamic_cast<const DagInit*>(Statement) &&
GetOperatorName(static_cast<const DagInit&>(*Statement)) == "case")) {
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)
Callback_(*B, (IndentLevel + Indent1), O_);
}
else {
Callback_(Statement, (IndentLevel + Indent1), O_);
}
}
O_.indent(IndentLevel) << "}\n";
}
};
/// EmitCaseConstructHandler - Emit code that handles the 'case'
/// construct. Takes a function object that should emit code for every case
/// clause. Implemented on top of WalkCase.
/// Callback's type is void F(const Init* Statement, unsigned IndentLevel,
/// raw_ostream& O).
/// EmitElseIf parameter controls the type of condition that is emitted ('if
/// (..) {..} else if (..) {} .. else {..}' vs. 'if (..) {..} if(..) {..}
/// .. else {..}').
template <typename F>
void EmitCaseConstructHandler(const Init* Case, unsigned IndentLevel,
F Callback, bool EmitElseIf,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
WalkCase(Case, EmitCaseTestCallback(EmitElseIf, OptDescs, O),
EmitCaseStatementCallback<F>(Callback, O), IndentLevel);
}
/// TokenizeCmdLine - converts from
/// "$CALL(HookName, 'Arg1', 'Arg2')/path -arg1 -arg2" to
/// ["$CALL(", "HookName", "Arg1", "Arg2", ")/path", "-arg1", "-arg2"].
void TokenizeCmdLine(const std::string& CmdLine, StrVector& Out) {
const char* Delimiters = " \t\n\v\f\r";
enum TokenizerState
{ Normal, SpecialCommand, InsideSpecialCommand, InsideQuotationMarks }
cur_st = Normal;
if (CmdLine.empty())
return;
Out.push_back("");
std::string::size_type B = CmdLine.find_first_not_of(Delimiters),
E = CmdLine.size();
for (; B != E; ++B) {
char cur_ch = CmdLine[B];
switch (cur_st) {
case Normal:
if (cur_ch == '$') {
cur_st = SpecialCommand;
break;
}
if (OneOf(Delimiters, cur_ch)) {
// Skip whitespace
B = CmdLine.find_first_not_of(Delimiters, B);
if (B == std::string::npos) {
B = E-1;
continue;
}
--B;
Out.push_back("");
continue;
}
break;
case SpecialCommand:
if (OneOf(Delimiters, cur_ch)) {
cur_st = Normal;
Out.push_back("");
continue;
}
if (cur_ch == '(') {
Out.push_back("");
cur_st = InsideSpecialCommand;
continue;
}
break;
case InsideSpecialCommand:
if (OneOf(Delimiters, cur_ch)) {
continue;
}
if (cur_ch == '\'') {
cur_st = InsideQuotationMarks;
Out.push_back("");
continue;
}
if (cur_ch == ')') {
cur_st = Normal;
Out.push_back("");
}
if (cur_ch == ',') {
continue;
}
break;
case InsideQuotationMarks:
if (cur_ch == '\'') {
cur_st = InsideSpecialCommand;
continue;
}
break;
}
Out.back().push_back(cur_ch);
}
}
/// SubstituteCall - Given "$CALL(HookName, [Arg1 [, Arg2 [...]]])", output
/// "hooks::HookName([Arg1 [, Arg2 [, ...]]])". Helper function used by
/// SubstituteSpecialCommands().
StrVector::const_iterator
SubstituteCall (StrVector::const_iterator Pos,
StrVector::const_iterator End,
bool IsJoin, raw_ostream& O)
{
const char* errorMessage = "Syntax error in $CALL invocation!";
CheckedIncrement(Pos, End, errorMessage);
const std::string& CmdName = *Pos;
if (CmdName == ")")
throw "$CALL invocation: empty argument list!";
O << "hooks::";
O << CmdName << "(";
bool firstIteration = true;
while (true) {
CheckedIncrement(Pos, End, errorMessage);
const std::string& Arg = *Pos;
assert(Arg.size() != 0);
if (Arg[0] == ')')
break;
if (firstIteration)
firstIteration = false;
else
O << ", ";
if (Arg == "$INFILE") {
if (IsJoin)
throw "$CALL(Hook, $INFILE) can't be used with a Join tool!";
else
O << "inFile.c_str()";
}
else {
O << '"' << Arg << '"';
}
}
O << ')';
return Pos;
}
/// SubstituteEnv - Given '$ENV(VAR_NAME)', output 'getenv("VAR_NAME")'. Helper
/// function used by SubstituteSpecialCommands().
StrVector::const_iterator
SubstituteEnv (StrVector::const_iterator Pos,
StrVector::const_iterator End, raw_ostream& O)
{
const char* errorMessage = "Syntax error in $ENV invocation!";
CheckedIncrement(Pos, End, errorMessage);
const std::string& EnvName = *Pos;
if (EnvName == ")")
throw "$ENV invocation: empty argument list!";
O << "checkCString(std::getenv(\"";
O << EnvName;
O << "\"))";
CheckedIncrement(Pos, End, errorMessage);
return Pos;
}
/// SubstituteSpecialCommands - Given an invocation of $CALL or $ENV, output
/// handler code. Helper function used by EmitCmdLineVecFill().
StrVector::const_iterator
SubstituteSpecialCommands (StrVector::const_iterator Pos,
StrVector::const_iterator End,
bool IsJoin, raw_ostream& O)
{
const std::string& cmd = *Pos;
// Perform substitution.
if (cmd == "$CALL") {
Pos = SubstituteCall(Pos, End, IsJoin, O);
}
else if (cmd == "$ENV") {
Pos = SubstituteEnv(Pos, End, O);
}
else {
throw "Unknown special command: " + cmd;
}
// Handle '$CMD(ARG)/additional/text'.
const std::string& Leftover = *Pos;
assert(Leftover.at(0) == ')');
if (Leftover.size() != 1)
O << " + std::string(\"" << (Leftover.c_str() + 1) << "\")";
return Pos;
}
/// 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, unsigned IndentLevel,
raw_ostream& O) {
StrVector StrVec;
TokenizeCmdLine(InitPtrToString(CmdLine), StrVec);
if (StrVec.empty())
throw "Tool '" + ToolName + "' has empty command line!";
StrVector::const_iterator B = StrVec.begin(), E = StrVec.end();
// Emit the command itself.
assert(!StrVec[0].empty());
O.indent(IndentLevel) << "cmd = ";
if (StrVec[0][0] == '$') {
B = SubstituteSpecialCommands(B, E, IsJoin, O);
++B;
}
else {
O << '"' << StrVec[0] << '"';
++B;
}
O << ";\n";
// Go through the command arguments.
assert(B <= E);
for (; B != E; ++B) {
const std::string& cmd = *B;
assert(!cmd.empty());
O.indent(IndentLevel);
if (cmd.at(0) == '$') {
O << "vec.push_back(std::make_pair(0, ";
B = SubstituteSpecialCommands(B, E, IsJoin, O);
O << "));\n";
}
else {
O << "vec.push_back(std::make_pair(0, \"" << cmd << "\"));\n";
}
}
}
/// EmitForEachListElementCycleHeader - Emit common code for iterating through
/// all elements of a list. Helper function used by
/// EmitForwardOptionPropertyHandlingCode.
void EmitForEachListElementCycleHeader (const OptionDescription& D,
unsigned IndentLevel,
raw_ostream& O) {
unsigned IndentLevel1 = IndentLevel + Indent1;
O.indent(IndentLevel)
<< "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName() << ".begin(),\n";
O.indent(IndentLevel)
<< "E = " << D.GenVariableName() << ".end(); B != E;) {\n";
O.indent(IndentLevel1) << "unsigned pos = " << D.GenVariableName()
<< ".getPosition(B - " << D.GenVariableName()
<< ".begin());\n";
}
/// EmitForwardOptionPropertyHandlingCode - Helper function used to
/// implement EmitActionHandler. Emits code for
/// handling the (forward) and (forward_as) option properties.
void EmitForwardOptionPropertyHandlingCode (const OptionDescription& D,
unsigned IndentLevel,
const std::string& NewName,
raw_ostream& O) {
const std::string& Name = NewName.empty()
? ("-" + D.Name)
: NewName;
unsigned IndentLevel1 = IndentLevel + Indent1;
switch (D.Type) {
case OptionType::Switch:
O.indent(IndentLevel)
<< "vec.push_back(std::make_pair(" << D.GenVariableName()
<< ".getPosition(), \"" << Name << "\"));\n";
break;
case OptionType::Parameter:
O.indent(IndentLevel) << "vec.push_back(std::make_pair("
<< D.GenVariableName()
<<".getPosition(), \"" << Name;
if (!D.isForwardNotSplit()) {
O << "\"));\n";
O.indent(IndentLevel) << "vec.push_back(std::make_pair("
<< D.GenVariableName() << ".getPosition(), "
<< D.GenVariableName() << "));\n";
}
else {
O << "=\" + " << D.GenVariableName() << "));\n";
}
break;
case OptionType::Prefix:
O.indent(IndentLevel) << "vec.push_back(std::make_pair("
<< D.GenVariableName() << ".getPosition(), \""
<< Name << "\" + "
<< D.GenVariableName() << "));\n";
break;
case OptionType::PrefixList:
EmitForEachListElementCycleHeader(D, IndentLevel, O);
O.indent(IndentLevel1) << "vec.push_back(std::make_pair(pos, \""
<< Name << "\" + " << "*B));\n";
O.indent(IndentLevel1) << "++B;\n";
for (int i = 1, j = D.MultiVal; i < j; ++i) {
O.indent(IndentLevel1) << "vec.push_back(std::make_pair(pos, *B));\n";
O.indent(IndentLevel1) << "++B;\n";
}
O.indent(IndentLevel) << "}\n";
break;
case OptionType::ParameterList:
EmitForEachListElementCycleHeader(D, IndentLevel, O);
O.indent(IndentLevel1) << "vec.push_back(std::make_pair(pos, \""
<< Name << "\"));\n";
for (int i = 0, j = D.MultiVal; i < j; ++i) {
O.indent(IndentLevel1) << "vec.push_back(std::make_pair(pos, *B));\n";
O.indent(IndentLevel1) << "++B;\n";
}
O.indent(IndentLevel) << "}\n";
break;
case OptionType::SwitchList:
EmitForEachListElementCycleHeader(D, IndentLevel, O);
O.indent(IndentLevel1) << "vec.push_back(std::make_pair(pos, \""
<< Name << "\"));\n";
O.indent(IndentLevel1) << "++B;\n";
O.indent(IndentLevel) << "}\n";
break;
case OptionType::Alias:
default:
throw "Aliases are not allowed in tool option descriptions!";
}
}
/// ActionHandlingCallbackBase - Base class of EmitActionHandlersCallback and
/// EmitPreprocessOptionsCallback.
struct ActionHandlingCallbackBase
{
void onErrorDag(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const
{
O.indent(IndentLevel)
<< "PrintError(\""
<< (d.getNumArgs() >= 1 ? InitPtrToString(d.getArg(0)) : "Unknown error!")
<< "\");\n";
O.indent(IndentLevel) << "return 1;\n";
}
void onWarningDag(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(d, 1);
O.indent(IndentLevel) << "llvm::errs() << \""
<< InitPtrToString(d.getArg(0)) << "\";\n";
}
};
/// EmitActionHandlersCallback - Emit code that handles actions. Used by
/// EmitGenerateActionMethod() as an argument to EmitCaseConstructHandler().
class EmitActionHandlersCallback;
typedef void (EmitActionHandlersCallback::* EmitActionHandlersCallbackHandler)
(const DagInit&, unsigned, raw_ostream&) const;
class EmitActionHandlersCallback :
public ActionHandlingCallbackBase,
public HandlerTable<EmitActionHandlersCallbackHandler>
{
typedef EmitActionHandlersCallbackHandler Handler;
const OptionDescriptions& OptDescs;
/// EmitHookInvocation - Common code for hook invocation from actions. Used by
/// onAppendCmd and onOutputSuffix.
void EmitHookInvocation(const std::string& Str,
const char* BlockOpen, const char* BlockClose,
unsigned IndentLevel, raw_ostream& O) const
{
StrVector Out;
TokenizeCmdLine(Str, Out);
for (StrVector::const_iterator B = Out.begin(), E = Out.end();
B != E; ++B) {
const std::string& cmd = *B;
O.indent(IndentLevel) << BlockOpen;
if (cmd.at(0) == '$')
B = SubstituteSpecialCommands(B, E, /* IsJoin = */ true, O);
else
O << '"' << cmd << '"';
O << BlockClose;
}
}
void onAppendCmd (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(Dag, 1);
this->EmitHookInvocation(InitPtrToString(Dag.getArg(0)),
"vec.push_back(std::make_pair(65536, ", "));\n",
IndentLevel, O);
}
void onForward (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(Dag, 1);
const std::string& Name = InitPtrToString(Dag.getArg(0));
EmitForwardOptionPropertyHandlingCode(OptDescs.FindOption(Name),
IndentLevel, "", O);
}
void onForwardAs (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(Dag, 2);
const std::string& Name = InitPtrToString(Dag.getArg(0));
const std::string& NewName = InitPtrToString(Dag.getArg(1));
EmitForwardOptionPropertyHandlingCode(OptDescs.FindOption(Name),
IndentLevel, NewName, O);
}
void onForwardValue (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(Dag, 1);
const std::string& Name = InitPtrToString(Dag.getArg(0));
const OptionDescription& D = OptDescs.FindParameterListOrParameter(Name);
if (D.isSwitchList()) {
throw std::runtime_error
("forward_value is not allowed with switch_list");
}
if (D.isParameter()) {
O.indent(IndentLevel) << "vec.push_back(std::make_pair("
<< D.GenVariableName() << ".getPosition(), "
<< D.GenVariableName() << "));\n";
}
else {
O.indent(IndentLevel) << "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName()
<< ".begin(), \n";
O.indent(IndentLevel + Indent1) << " E = " << D.GenVariableName()
<< ".end(); B != E; ++B)\n";
O.indent(IndentLevel) << "{\n";
O.indent(IndentLevel + Indent1)
<< "unsigned pos = " << D.GenVariableName()
<< ".getPosition(B - " << D.GenVariableName()
<< ".begin());\n";
O.indent(IndentLevel + Indent1)
<< "vec.push_back(std::make_pair(pos, *B));\n";
O.indent(IndentLevel) << "}\n";
}
}
void onForwardTransformedValue (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(Dag, 2);
const std::string& Name = InitPtrToString(Dag.getArg(0));
const std::string& Hook = InitPtrToString(Dag.getArg(1));
const OptionDescription& D = OptDescs.FindParameterListOrParameter(Name);
O.indent(IndentLevel) << "vec.push_back(std::make_pair("
<< D.GenVariableName() << ".getPosition("
<< (D.isList() ? "0" : "") << "), "
<< "hooks::" << Hook << "(" << D.GenVariableName()
<< (D.isParameter() ? ".c_str()" : "") << ")));\n";
}
void onNoOutFile (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(Dag, 0);
O.indent(IndentLevel) << "no_out_file = true;\n";
}
void onOutputSuffix (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(Dag, 1);
this->EmitHookInvocation(InitPtrToString(Dag.getArg(0)),
"output_suffix = ", ";\n", IndentLevel, O);
}
void onStopCompilation (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
O.indent(IndentLevel) << "stop_compilation = true;\n";
}
void onUnpackValues (const DagInit& Dag,
unsigned IndentLevel, raw_ostream& O) const
{
throw "'unpack_values' is deprecated. "
"Use 'comma_separated' + 'forward_value' instead!";
}
public:
explicit EmitActionHandlersCallback(const OptionDescriptions& OD)
: OptDescs(OD)
{
if (!staticMembersInitialized_) {
AddHandler("error", &EmitActionHandlersCallback::onErrorDag);
AddHandler("warning", &EmitActionHandlersCallback::onWarningDag);
AddHandler("append_cmd", &EmitActionHandlersCallback::onAppendCmd);
AddHandler("forward", &EmitActionHandlersCallback::onForward);
AddHandler("forward_as", &EmitActionHandlersCallback::onForwardAs);
AddHandler("forward_value", &EmitActionHandlersCallback::onForwardValue);
AddHandler("forward_transformed_value",
&EmitActionHandlersCallback::onForwardTransformedValue);
AddHandler("no_out_file",
&EmitActionHandlersCallback::onNoOutFile);
AddHandler("output_suffix", &EmitActionHandlersCallback::onOutputSuffix);
AddHandler("stop_compilation",
&EmitActionHandlersCallback::onStopCompilation);
AddHandler("unpack_values",
&EmitActionHandlersCallback::onUnpackValues);
staticMembersInitialized_ = true;
}
}
void operator()(const Init* I,
unsigned IndentLevel, raw_ostream& O) const
{
InvokeDagInitHandler(this, I, IndentLevel, O);
}
};
void EmitGenerateActionMethodHeader(const ToolDescription& D,
bool IsJoin, bool Naked,
raw_ostream& O)
{
O.indent(Indent1) << "int GenerateAction(Action& Out,\n";
if (IsJoin)
O.indent(Indent2) << "const PathVector& inFiles,\n";
else
O.indent(Indent2) << "const sys::Path& inFile,\n";
O.indent(Indent2) << "const bool HasChildren,\n";
O.indent(Indent2) << "const llvm::sys::Path& TempDir,\n";
O.indent(Indent2) << "const InputLanguagesSet& InLangs,\n";
O.indent(Indent2) << "const LanguageMap& LangMap) const\n";
O.indent(Indent1) << "{\n";
if (!Naked) {
O.indent(Indent2) << "std::string cmd;\n";
O.indent(Indent2) << "std::string out_file;\n";
O.indent(Indent2)
<< "std::vector<std::pair<unsigned, std::string> > vec;\n";
O.indent(Indent2) << "bool stop_compilation = !HasChildren;\n";
O.indent(Indent2) << "bool no_out_file = false;\n";
O.indent(Indent2) << "std::string output_suffix(\""
<< D.OutputSuffix << "\");\n";
}
}
// EmitGenerateActionMethod - Emit either a normal or a "join" version of the
// Tool::GenerateAction() method.
void EmitGenerateActionMethod (const ToolDescription& D,
const OptionDescriptions& OptDescs,
bool IsJoin, raw_ostream& O) {
EmitGenerateActionMethodHeader(D, IsJoin, /* Naked = */ false, O);
if (!D.CmdLine)
throw "Tool " + D.Name + " has no cmd_line property!";
// Process the 'command' property.
O << '\n';
EmitCmdLineVecFill(D.CmdLine, D.Name, IsJoin, Indent2, O);
O << '\n';
// Process the 'actions' list of this tool.
if (D.Actions)
EmitCaseConstructHandler(D.Actions, Indent2,
EmitActionHandlersCallback(OptDescs),
false, OptDescs, O);
O << '\n';
// Input file (s)
if (!D.InFileOption.empty()) {
O.indent(Indent2)
<< "vec.push_back(std::make_pair(InputFilenames.getPosition(0), \""
<< D.InFileOption << "\");\n";
}
if (IsJoin) {
O.indent(Indent2)
<< "for (PathVector::const_iterator B = inFiles.begin(),\n";
O.indent(Indent3) << "E = inFiles.end(); B != E; ++B)\n";
O.indent(Indent2) << "{\n";
O.indent(Indent3) << "vec.push_back(std::make_pair("
<< "InputFilenames.getPosition(B - inFiles.begin()), "
<< "B->str()));\n";
O.indent(Indent2) << "}\n";
}
else {
O.indent(Indent2) << "vec.push_back(std::make_pair("
<< "InputFilenames.getPosition(0), inFile.str()));\n";
}
// Output file
O.indent(Indent2) << "if (!no_out_file) {\n";
if (!D.OutFileOption.empty())
O.indent(Indent3) << "vec.push_back(std::make_pair(65536, \""
<< D.OutFileOption << "\"));\n";
O.indent(Indent3) << "out_file = this->OutFilename("
<< (IsJoin ? "sys::Path(),\n" : "inFile,\n");
O.indent(Indent4) <<
"TempDir, stop_compilation, output_suffix.c_str()).str();\n\n";
O.indent(Indent3) << "vec.push_back(std::make_pair(65536, out_file));\n";
O.indent(Indent2) << "}\n\n";
// Handle the Sink property.
std::string SinkOption("autogenerated::");
SinkOption += SinkOptionName;
if (D.isSink()) {
O.indent(Indent2) << "if (!" << SinkOption << ".empty()) {\n";
O.indent(Indent3) << "for (cl::list<std::string>::iterator B = "
<< SinkOption << ".begin(), E = " << SinkOption
<< ".end(); B != E; ++B)\n";
O.indent(Indent4) << "vec.push_back(std::make_pair(" << SinkOption
<< ".getPosition(B - " << SinkOption
<< ".begin()), *B));\n";
O.indent(Indent2) << "}\n";
}
O.indent(Indent2) << "Out.Construct(cmd, this->SortArgs(vec), "
<< "stop_compilation, out_file);\n";
O.indent(Indent2) << "return 0;\n";
O.indent(Indent1) << "}\n\n";
}
/// EmitGenerateActionMethods - Emit two GenerateAction() methods for
/// a given Tool class.
void EmitGenerateActionMethods (const ToolDescription& ToolDesc,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
if (!ToolDesc.isJoin()) {
EmitGenerateActionMethodHeader(ToolDesc, /* IsJoin = */ true,
/* Naked = */ true, O);
O.indent(Indent2) << "PrintError(\"" << ToolDesc.Name
<< " is not a Join tool!\");\n";
O.indent(Indent2) << "return -1;\n";
O.indent(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, raw_ostream& O) {
O.indent(Indent1) << "const char** InputLanguages() const {\n";
O.indent(Indent2) << "return InputLanguages_;\n";
O.indent(Indent1) << "}\n\n";
if (D.OutLanguage.empty())
throw "Tool " + D.Name + " has no 'out_language' property!";
O.indent(Indent1) << "const char* OutputLanguage() const {\n";
O.indent(Indent2) << "return \"" << D.OutLanguage << "\";\n";
O.indent(Indent1) << "}\n\n";
}
/// EmitNameMethod - Emit the Name() method for a given Tool class.
void EmitNameMethod (const ToolDescription& D, raw_ostream& O) {
O.indent(Indent1) << "const char* Name() const {\n";
O.indent(Indent2) << "return \"" << D.Name << "\";\n";
O.indent(Indent1) << "}\n\n";
}
/// EmitIsJoinMethod - Emit the IsJoin() method for a given Tool
/// class.
void EmitIsJoinMethod (const ToolDescription& D, raw_ostream& O) {
O.indent(Indent1) << "bool IsJoin() const {\n";
if (D.isJoin())
O.indent(Indent2) << "return true;\n";
else
O.indent(Indent2) << "return false;\n";
O.indent(Indent1) << "}\n\n";
}
/// EmitWorksOnEmptyCallback - Callback used by EmitWorksOnEmptyMethod in
/// conjunction with EmitCaseConstructHandler.
void EmitWorksOnEmptyCallback (const Init* Value,
unsigned IndentLevel, raw_ostream& O) {
CheckBooleanConstant(Value);
O.indent(IndentLevel) << "return " << Value->getAsString() << ";\n";
}
/// EmitWorksOnEmptyMethod - Emit the WorksOnEmpty() method for a given Tool
/// class.
void EmitWorksOnEmptyMethod (const ToolDescription& D,
const OptionDescriptions& OptDescs,
raw_ostream& O)
{
O.indent(Indent1) << "bool WorksOnEmpty() const {\n";
if (D.OnEmpty == 0)
O.indent(Indent2) << "return false;\n";
else
EmitCaseConstructHandler(D.OnEmpty, Indent2, EmitWorksOnEmptyCallback,
/*EmitElseIf = */ true, OptDescs, O);
O.indent(Indent1) << "}\n\n";
}
/// EmitStaticMemberDefinitions - Emit static member definitions for a
/// given Tool class.
void EmitStaticMemberDefinitions(const ToolDescription& D, raw_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,
raw_ostream& O) {
if (D.Name == "root")
return;
// Header
O << "class " << D.Name << " : public ";
if (D.isJoin())
O << "JoinTool";
else
O << "Tool";
O << " {\nprivate:\n";
O.indent(Indent1) << "static const char* InputLanguages_[];\n\n";
O << "public:\n";
EmitNameMethod(D, O);
EmitInOutLanguageMethods(D, O);
EmitIsJoinMethod(D, O);
EmitWorksOnEmptyMethod(D, OptDescs, O);
EmitGenerateActionMethods(D, OptDescs, O);
// Close class definition
O << "};\n";
EmitStaticMemberDefinitions(D, O);
}
/// EmitOptionDefinitions - Iterate over a list of option descriptions
/// and emit registration code.
void EmitOptionDefinitions (const OptionDescriptions& descs,
bool HasSink, raw_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;
}
O << val.GenTypeDeclaration() << ' '
<< val.GenPlainVariableName();
O << "(\"" << val.Name << "\"\n";
if (val.Type == OptionType::Prefix || val.Type == OptionType::PrefixList)
O << ", cl::Prefix";
if (val.isRequired()) {
if (val.isList() && !val.isMultiVal())
O << ", cl::OneOrMore";
else
O << ", cl::Required";
}
if (val.isOptional())
O << ", cl::Optional";
if (val.isOneOrMore())
O << ", cl::OneOrMore";
if (val.isZeroOrMore())
O << ", cl::ZeroOrMore";
if (val.isReallyHidden())
O << ", cl::ReallyHidden";
else if (val.isHidden())
O << ", cl::Hidden";
if (val.isCommaSeparated())
O << ", cl::CommaSeparated";
if (val.MultiVal > 1)
O << ", cl::multi_val(" << val.MultiVal << ')';
if (val.InitVal) {
const std::string& str = val.InitVal->getAsString();
O << ", cl::init(" << str << ')';
}
if (!val.Help.empty())
O << ", cl::desc(\"" << val.Help << "\")";
O << ");\n\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.GenPlainVariableName()
<< "(\"" << 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 << "cl::list<std::string> " << SinkOptionName << "(cl::Sink);\n";
O << '\n';
}
/// EmitPreprocessOptionsCallback - Helper function passed to
/// EmitCaseConstructHandler() by EmitPreprocessOptions().
class EmitPreprocessOptionsCallback;
typedef void
(EmitPreprocessOptionsCallback::* EmitPreprocessOptionsCallbackHandler)
(const DagInit&, unsigned, raw_ostream&) const;
class EmitPreprocessOptionsCallback :
public ActionHandlingCallbackBase,
public HandlerTable<EmitPreprocessOptionsCallbackHandler>
{
typedef EmitPreprocessOptionsCallbackHandler Handler;
typedef void
(EmitPreprocessOptionsCallback::* HandlerImpl)
(const Init*, unsigned, raw_ostream&) const;
const OptionDescriptions& OptDescs_;
void onListOrDag(const DagInit& d, HandlerImpl h,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(d, 1);
const Init* I = d.getArg(0);
// If I is a list, apply h to each element.
if (typeid(*I) == typeid(ListInit)) {
const ListInit& L = *static_cast<const ListInit*>(I);
for (ListInit::const_iterator B = L.begin(), E = L.end(); B != E; ++B)
((this)->*(h))(*B, IndentLevel, O);
}
// Otherwise, apply h to I.
else {
((this)->*(h))(I, IndentLevel, O);
}
}
void onUnsetOptionImpl(const Init* I,
unsigned IndentLevel, raw_ostream& O) const
{
const std::string& OptName = InitPtrToString(I);
const OptionDescription& OptDesc = OptDescs_.FindOption(OptName);
if (OptDesc.isSwitch()) {
O.indent(IndentLevel) << OptDesc.GenVariableName() << " = false;\n";
}
else if (OptDesc.isParameter()) {
O.indent(IndentLevel) << OptDesc.GenVariableName() << " = \"\";\n";
}
else if (OptDesc.isList()) {
O.indent(IndentLevel) << OptDesc.GenVariableName() << ".clear();\n";
}
else {
throw "Can't apply 'unset_option' to alias option '" + OptName + "'!";
}
}
void onUnsetOption(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const
{
this->onListOrDag(d, &EmitPreprocessOptionsCallback::onUnsetOptionImpl,
IndentLevel, O);
}
void onSetOptionImpl(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const {
CheckNumberOfArguments(d, 2);
const std::string& OptName = InitPtrToString(d.getArg(0));
const Init* Value = d.getArg(1);
const OptionDescription& OptDesc = OptDescs_.FindOption(OptName);
if (OptDesc.isList()) {
const ListInit& List = InitPtrToList(Value);
O.indent(IndentLevel) << OptDesc.GenVariableName() << ".clear();\n";
for (ListInit::const_iterator B = List.begin(), E = List.end();
B != E; ++B) {
const Init* CurElem = *B;
if (OptDesc.isSwitchList())
CheckBooleanConstant(CurElem);
O.indent(IndentLevel)
<< OptDesc.GenVariableName() << ".push_back(\""
<< (OptDesc.isSwitchList() ? CurElem->getAsString()
: InitPtrToString(CurElem))
<< "\");\n";
}
}
else if (OptDesc.isSwitch()) {
CheckBooleanConstant(Value);
O.indent(IndentLevel) << OptDesc.GenVariableName()
<< " = " << Value->getAsString() << ";\n";
}
else if (OptDesc.isParameter()) {
const std::string& Str = InitPtrToString(Value);
O.indent(IndentLevel) << OptDesc.GenVariableName()
<< " = \"" << Str << "\";\n";
}
else {
throw "Can't apply 'set_option' to alias option -" + OptName + " !";
}
}
void onSetSwitch(const Init* I,
unsigned IndentLevel, raw_ostream& O) const {
const std::string& OptName = InitPtrToString(I);
const OptionDescription& OptDesc = OptDescs_.FindOption(OptName);
if (OptDesc.isSwitch())
O.indent(IndentLevel) << OptDesc.GenVariableName() << " = true;\n";
else
throw "set_option: -" + OptName + " is not a switch option!";
}
void onSetOption(const DagInit& d,
unsigned IndentLevel, raw_ostream& O) const
{
CheckNumberOfArguments(d, 1);
// Two arguments: (set_option "parameter", VALUE), where VALUE can be a
// boolean, a string or a string list.
if (d.getNumArgs() > 1)
this->onSetOptionImpl(d, IndentLevel, O);
// One argument: (set_option "switch")
// or (set_option ["switch1", "switch2", ...])
else
this->onListOrDag(d, &EmitPreprocessOptionsCallback::onSetSwitch,
IndentLevel, O);
}
public:
EmitPreprocessOptionsCallback(const OptionDescriptions& OptDescs)
: OptDescs_(OptDescs)
{
if (!staticMembersInitialized_) {
AddHandler("error", &EmitPreprocessOptionsCallback::onErrorDag);
AddHandler("warning", &EmitPreprocessOptionsCallback::onWarningDag);
AddHandler("unset_option", &EmitPreprocessOptionsCallback::onUnsetOption);
AddHandler("set_option", &EmitPreprocessOptionsCallback::onSetOption);
staticMembersInitialized_ = true;
}
}
void operator()(const Init* I,
unsigned IndentLevel, raw_ostream& O) const
{
InvokeDagInitHandler(this, I, IndentLevel, O);
}
};
/// EmitPreprocessOptions - Emit the PreprocessOptions() function.
void EmitPreprocessOptions (const RecordKeeper& Records,
const OptionDescriptions& OptDecs, raw_ostream& O)
{
O << "int PreprocessOptions () {\n";
const RecordVector& OptionPreprocessors =
Records.getAllDerivedDefinitions("OptionPreprocessor");
for (RecordVector::const_iterator B = OptionPreprocessors.begin(),
E = OptionPreprocessors.end(); B!=E; ++B) {
DagInit* Case = (*B)->getValueAsDag("preprocessor");
EmitCaseConstructHandler(Case, Indent1,
EmitPreprocessOptionsCallback(OptDecs),
false, OptDecs, O);
}
O << '\n';
O.indent(Indent1) << "return 0;\n";
O << "}\n\n";
}
class DoEmitPopulateLanguageMap;
typedef void (DoEmitPopulateLanguageMap::* DoEmitPopulateLanguageMapHandler)
(const DagInit& D);
class DoEmitPopulateLanguageMap
: public HandlerTable<DoEmitPopulateLanguageMapHandler>
{
private:
raw_ostream& O_;
public:
explicit DoEmitPopulateLanguageMap (raw_ostream& O) : O_(O) {
if (!staticMembersInitialized_) {
AddHandler("lang_to_suffixes",
&DoEmitPopulateLanguageMap::onLangToSuffixes);
staticMembersInitialized_ = true;
}
}
void operator() (Init* I) {
InvokeDagInitHandler(this, I);
}
private:
void onLangToSuffixes (const DagInit& d) {
CheckNumberOfArguments(d, 2);
const std::string& Lang = InitPtrToString(d.getArg(0));
Init* Suffixes = d.getArg(1);
// Second argument to lang_to_suffixes is either a single string...
if (typeid(*Suffixes) == typeid(StringInit)) {
O_.indent(Indent1) << "langMap[\"" << InitPtrToString(Suffixes)
<< "\"] = \"" << Lang << "\";\n";
}
// ...or a list of strings.
else {
const ListInit& Lst = InitPtrToList(Suffixes);
assert(Lst.size() != 0);
for (ListInit::const_iterator B = Lst.begin(), E = Lst.end();
B != E; ++B) {
O_.indent(Indent1) << "langMap[\"" << InitPtrToString(*B)
<< "\"] = \"" << Lang << "\";\n";
}
}
}
};
/// EmitPopulateLanguageMap - Emit the PopulateLanguageMap() function.
void EmitPopulateLanguageMap (const RecordKeeper& Records, raw_ostream& O)
{
O << "int PopulateLanguageMap (LanguageMap& langMap) {\n";
// For each LangMap:
const RecordVector& LangMaps =
Records.getAllDerivedDefinitions("LanguageMap");
for (RecordVector::const_iterator B = LangMaps.begin(),
E = LangMaps.end(); B!=E; ++B) {
ListInit* LangMap = (*B)->getValueAsListInit("map");
std::for_each(LangMap->begin(), LangMap->end(),
DoEmitPopulateLanguageMap(O));
}
O << '\n';
O.indent(Indent1) << "return 0;\n";
O << "}\n\n";
}
/// EmitEdgePropertyHandlerCallback - Emits code that handles edge
/// properties. Helper function passed to EmitCaseConstructHandler() by
/// EmitEdgeClass().
void EmitEdgePropertyHandlerCallback (const Init* i, unsigned IndentLevel,
raw_ostream& O) {
const DagInit& d = InitPtrToDag(i);
const std::string& OpName = GetOperatorName(d);
if (OpName == "inc_weight") {
O.indent(IndentLevel) << "ret += ";
}
else if (OpName == "error") {
CheckNumberOfArguments(d, 1);
O.indent(IndentLevel) << "PrintError(\""
<< InitPtrToString(d.getArg(0))
<< "\");\n";
O.indent(IndentLevel) << "return -1;\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,
const DagInit& Case, const OptionDescriptions& OptDescs,
raw_ostream& O) {
// Class constructor.
O << "class Edge" << N << ": public Edge {\n"
<< "public:\n";
O.indent(Indent1) << "Edge" << N << "() : Edge(\"" << Target
<< "\") {}\n\n";
// Function Weight().
O.indent(Indent1)
<< "int Weight(const InputLanguagesSet& InLangs) const {\n";
O.indent(Indent2) << "unsigned ret = 0;\n";
// Handle the 'case' construct.
EmitCaseConstructHandler(&Case, Indent2, EmitEdgePropertyHandlerCallback,
false, OptDescs, O);
O.indent(Indent2) << "return ret;\n";
O.indent(Indent1) << "}\n\n};\n\n";
}
/// EmitEdgeClasses - Emit Edge* classes that represent graph edges.
void EmitEdgeClasses (const DagVector& EdgeVector,
const OptionDescriptions& OptDescs,
raw_ostream& O) {
int i = 0;
for (DagVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const DagInit& Edge = **B;
const std::string& Name = GetOperatorName(Edge);
if (Name == "optional_edge") {
assert(IsOptionalEdge(Edge));
const std::string& NodeB = InitPtrToString(Edge.getArg(1));
const DagInit& Weight = InitPtrToDag(Edge.getArg(2));
EmitEdgeClass(i, NodeB, Weight, OptDescs, O);
}
else if (Name != "edge") {
throw "Unknown edge class: '" + Name + "'!";
}
++i;
}
}
/// EmitPopulateCompilationGraph - Emit the PopulateCompilationGraph() function.
void EmitPopulateCompilationGraph (const DagVector& EdgeVector,
const ToolDescriptions& ToolDescs,
raw_ostream& O)
{
O << "int PopulateCompilationGraph (CompilationGraph& G) {\n";
for (ToolDescriptions::const_iterator B = ToolDescs.begin(),
E = ToolDescs.end(); B != E; ++B)
O.indent(Indent1) << "G.insertNode(new " << (*B)->Name << "());\n";
O << '\n';
// Insert edges.
int i = 0;
for (DagVector::const_iterator B = EdgeVector.begin(),
E = EdgeVector.end(); B != E; ++B) {
const DagInit& Edge = **B;
const std::string& NodeA = InitPtrToString(Edge.getArg(0));
const std::string& NodeB = InitPtrToString(Edge.getArg(1));
O.indent(Indent1) << "if (int ret = G.insertEdge(\"" << NodeA << "\", ";
if (IsOptionalEdge(Edge))
O << "new Edge" << i << "()";
else
O << "new SimpleEdge(\"" << NodeB << "\")";
O << "))\n";
O.indent(Indent2) << "return ret;\n";
++i;
}
O << '\n';
O.indent(Indent1) << "return 0;\n";
O << "}\n\n";
}
/// HookInfo - Information about the hook type and number of arguments.
struct HookInfo {
// A hook can either have a single parameter of type std::vector<std::string>,
// or NumArgs parameters of type const char*.
enum HookType { ListHook, ArgHook };
HookType Type;
unsigned NumArgs;
HookInfo() : Type(ArgHook), NumArgs(1)
{}
HookInfo(HookType T) : Type(T), NumArgs(1)
{}
HookInfo(unsigned N) : Type(ArgHook), NumArgs(N)
{}
};
typedef llvm::StringMap<HookInfo> HookInfoMap;
/// ExtractHookNames - Extract the hook names from all instances of
/// $CALL(HookName) in the provided command line string/action. Helper
/// function used by FillInHookNames().
class ExtractHookNames {
HookInfoMap& HookNames_;
const OptionDescriptions& OptDescs_;
public:
ExtractHookNames(HookInfoMap& HookNames, const OptionDescriptions& OptDescs)
: HookNames_(HookNames), OptDescs_(OptDescs)
{}
void onAction (const DagInit& Dag) {
const std::string& Name = GetOperatorName(Dag);
if (Name == "forward_transformed_value") {
CheckNumberOfArguments(Dag, 2);
const std::string& OptName = InitPtrToString(Dag.getArg(0));
const std::string& HookName = InitPtrToString(Dag.getArg(1));
const OptionDescription& D =
OptDescs_.FindParameterListOrParameter(OptName);
HookNames_[HookName] = HookInfo(D.isList() ? HookInfo::ListHook
: HookInfo::ArgHook);
}
else if (Name == "append_cmd" || Name == "output_suffix") {
CheckNumberOfArguments(Dag, 1);
this->onCmdLine(InitPtrToString(Dag.getArg(0)));
}
}
void onCmdLine(const std::string& Cmd) {
StrVector cmds;
TokenizeCmdLine(Cmd, cmds);
for (StrVector::const_iterator B = cmds.begin(), E = cmds.end();
B != E; ++B) {
const std::string& cmd = *B;
if (cmd == "$CALL") {
unsigned NumArgs = 0;
CheckedIncrement(B, E, "Syntax error in $CALL invocation!");
const std::string& HookName = *B;
if (HookName.at(0) == ')')
throw "$CALL invoked with no arguments!";
while (++B != E && B->at(0) != ')') {
++NumArgs;
}
HookInfoMap::const_iterator H = HookNames_.find(HookName);
if (H != HookNames_.end() && H->second.NumArgs != NumArgs &&
H->second.Type != HookInfo::ArgHook)
throw "Overloading of hooks is not allowed. Overloaded hook: "
+ HookName;
else
HookNames_[HookName] = HookInfo(NumArgs);
}
}
}
void operator()(const Init* Arg) {
// We're invoked on an action (either a dag or a dag list).
if (typeid(*Arg) == typeid(DagInit)) {
const DagInit& Dag = InitPtrToDag(Arg);
this->onAction(Dag);
return;
}
else if (typeid(*Arg) == typeid(ListInit)) {
const ListInit& List = InitPtrToList(Arg);
for (ListInit::const_iterator B = List.begin(), E = List.end(); B != E;
++B) {
const DagInit& Dag = InitPtrToDag(*B);
this->onAction(Dag);
}
return;
}
// We're invoked on a command line.
this->onCmdLine(InitPtrToString(Arg));
}
void operator()(const Init* Statement, unsigned) {
this->operator()(Statement);
}
};
/// FillInHookNames - Actually extract the hook names from all command
/// line strings. Helper function used by EmitHookDeclarations().
void FillInHookNames(const ToolDescriptions& ToolDescs,
const OptionDescriptions& OptDescs,
HookInfoMap& HookNames)
{
// For all tool descriptions:
for (ToolDescriptions::const_iterator B = ToolDescs.begin(),
E = ToolDescs.end(); B != E; ++B) {
const ToolDescription& D = *(*B);
// Look for 'forward_transformed_value' in 'actions'.
if (D.Actions)
WalkCase(D.Actions, Id(), ExtractHookNames(HookNames, OptDescs));
// Look for hook invocations in 'cmd_line'.
if (!D.CmdLine)
continue;
if (dynamic_cast<StringInit*>(D.CmdLine))
// This is a string.
ExtractHookNames(HookNames, OptDescs).operator()(D.CmdLine);
else
// This is a 'case' construct.
WalkCase(D.CmdLine, Id(), ExtractHookNames(HookNames, OptDescs));
}
}
/// 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,
const OptionDescriptions& OptDescs, raw_ostream& O) {
HookInfoMap HookNames;
FillInHookNames(ToolDescs, OptDescs, HookNames);
if (HookNames.empty())
return;
for (HookInfoMap::const_iterator B = HookNames.begin(),
E = HookNames.end(); B != E; ++B) {
const char* HookName = B->first();
const HookInfo& Info = B->second;
O.indent(Indent1) << "std::string " << HookName << "(";
if (Info.Type == HookInfo::ArgHook) {
for (unsigned i = 0, j = Info.NumArgs; i < j; ++i) {
O << "const char* Arg" << i << (i+1 == j ? "" : ", ");
}
}
else {
O << "const std::vector<std::string>& Arg";
}
O <<");\n";
}
}
/// EmitIncludes - Emit necessary #include directives and some
/// additional declarations.
void EmitIncludes(raw_ostream& O) {
O << "#include \"llvm/CompilerDriver/BuiltinOptions.h\"\n"
<< "#include \"llvm/CompilerDriver/CompilationGraph.h\"\n"
<< "#include \"llvm/CompilerDriver/Error.h\"\n"
<< "#include \"llvm/CompilerDriver/Tool.h\"\n\n"
<< "#include \"llvm/Support/CommandLine.h\"\n"
<< "#include \"llvm/Support/raw_ostream.h\"\n\n"
<< "#include <algorithm>\n"
<< "#include <cstdlib>\n"
<< "#include <iterator>\n"
<< "#include <stdexcept>\n\n"
<< "using namespace llvm;\n"
<< "using namespace llvmc;\n\n"
<< "inline const char* checkCString(const char* s)\n"
<< "{ return s == NULL ? \"\" : s; }\n\n";
}
/// DriverData - Holds all information about the driver.
struct DriverData {
OptionDescriptions OptDescs;
ToolDescriptions ToolDescs;
DagVector Edges;
bool HasSink;
};
/// 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;
}
/// CollectDriverData - Collect compilation graph edges, tool properties and
/// option properties from the parse tree.
void CollectDriverData (const RecordKeeper& Records, DriverData& Data) {
// Collect option properties.
const RecordVector& OptionLists =
Records.getAllDerivedDefinitions("OptionList");
CollectOptionDescriptions(OptionLists, Data.OptDescs);
// Collect tool properties.
const RecordVector& Tools = Records.getAllDerivedDefinitions("Tool");
CollectToolDescriptions(Tools, Data.ToolDescs);
Data.HasSink = HasSink(Data.ToolDescs);
// Collect compilation graph edges.
const RecordVector& CompilationGraphs =
Records.getAllDerivedDefinitions("CompilationGraph");
FillInEdgeVector(CompilationGraphs, Data.Edges);
}
/// CheckDriverData - Perform some sanity checks on the collected data.
void CheckDriverData(DriverData& 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 EmitDriverCode(const DriverData& Data, raw_ostream& O) {
// Emit file header.
EmitIncludes(O);
// Emit global option registration code.
O << "namespace llvmc {\n"
<< "namespace autogenerated {\n\n";
EmitOptionDefinitions(Data.OptDescs, Data.HasSink, O);
O << "} // End namespace autogenerated.\n"
<< "} // End namespace llvmc.\n\n";
// Emit hook declarations.
O << "namespace hooks {\n";
EmitHookDeclarations(Data.ToolDescs, Data.OptDescs, O);
O << "} // End namespace hooks.\n\n";
O << "namespace {\n\n";
O << "using namespace llvmc::autogenerated;\n\n";
// 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);
O << "} // End anonymous namespace.\n\n";
O << "namespace llvmc {\n";
O << "namespace autogenerated {\n\n";
// Emit PreprocessOptions() function.
EmitPreprocessOptions(Records, Data.OptDescs, O);
// Emit PopulateLanguageMap() function
// (language map maps from file extensions to language names).
EmitPopulateLanguageMap(Records, O);
// Emit PopulateCompilationGraph() function.
EmitPopulateCompilationGraph(Data.Edges, Data.ToolDescs, O);
O << "} // End namespace autogenerated.\n";
O << "} // End namespace llvmc.\n\n";
// EOF
}
// End of anonymous namespace
}
/// run - The back-end entry point.
void LLVMCConfigurationEmitter::run (raw_ostream &O) {
try {
DriverData Data;
CollectDriverData(Records, Data);
CheckDriverData(Data);
this->EmitSourceFileHeader("llvmc-based driver: auto-generated code", O);
EmitDriverCode(Data, O);
} catch (std::exception& Error) {
throw Error.what() + std::string(" - usually this means a syntax error.");
}
}
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