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llvm-project/llvm/utils/TableGen/LLVMCConfigurationEmitter.cpp

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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 = " ";
const char * Indent4 = " ";
// Default help string.
const char * DefaultHelpString = "NO HELP MESSAGE PROVIDED";
// Name for the "sink" option.
const char * SinkOptionName = "AutoGeneratedSinkOption";
//===----------------------------------------------------------------------===//
/// Helper functions
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->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";
}
//===----------------------------------------------------------------------===//
/// Back-end specific code
// A command-line option can have one of the following types:
//
// Alias - an alias for another option.
//
// Switch - a simple switch without arguments, e.g. -O2
//
// Parameter - an option that takes one(and only one) argument, e.g. -o file,
// --output=file
//
// ParameterList - same as Parameter, but more than one occurence
// of the option is allowed, e.g. -lm -lpthread
//
// Prefix - argument is everything after the prefix,
// e.g. -Wa,-foo,-bar, -DNAME=VALUE
//
// PrefixList - same as Prefix, but more than one option occurence is
// allowed.
namespace OptionType {
enum OptionType { Alias, Switch,
Parameter, ParameterList, Prefix, PrefixList};
}
bool IsListOptionType (OptionType::OptionType t) {
return (t == OptionType::ParameterList || t == OptionType::PrefixList);
}
// Code duplication here is necessary because one option can affect
// several tools and those tools may have different actions associated
// with this option. GlobalOptionDescriptions are used to generate
// the option registration code, while ToolOptionDescriptions are used
// to generate tool-specific code.
/// OptionDescription - Base class for option descriptions.
struct OptionDescription {
OptionType::OptionType Type;
std::string Name;
OptionDescription(OptionType::OptionType t = OptionType::Switch,
const std::string& n = "")
: Type(t), Name(n)
{}
const char* 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>";
}
}
// Escape commas and other symbols not allowed in the C++ variable
// names. Makes it possible to use options with names like "Wa,"
// (useful for prefix options).
std::string EscapeVariableName(const std::string& Var) const {
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 += "_comma_";
}
else {
ret.push_back(cur_char);
}
}
return ret;
}
std::string GenVariableName() const {
const std::string& EscapedName = EscapeVariableName(Name);
switch (Type) {
case OptionType::Alias:
return "AutoGeneratedAlias" + EscapedName;
case OptionType::Switch:
return "AutoGeneratedSwitch" + EscapedName;
case OptionType::Prefix:
return "AutoGeneratedPrefix" + EscapedName;
case OptionType::PrefixList:
return "AutoGeneratedPrefixList" + EscapedName;
case OptionType::Parameter:
return "AutoGeneratedParameter" + EscapedName;
case OptionType::ParameterList:
default:
return "AutoGeneratedParameterList" + EscapedName;
}
}
};
// Global option description.
namespace GlobalOptionDescriptionFlags {
enum GlobalOptionDescriptionFlags { Required = 0x1 };
}
struct GlobalOptionDescription : public OptionDescription {
std::string Help;
unsigned Flags;
// We need to provide a default constructor because
// StringMap can only store DefaultConstructible objects.
GlobalOptionDescription() : OptionDescription(), Flags(0)
{}
GlobalOptionDescription (OptionType::OptionType t, const std::string& n,
const std::string& h = DefaultHelpString)
: OptionDescription(t, n), Help(h), Flags(0)
{}
bool isRequired() const {
return Flags & GlobalOptionDescriptionFlags::Required;
}
void setRequired() {
Flags |= GlobalOptionDescriptionFlags::Required;
}
/// Merge - Merge two option descriptions.
void Merge (const GlobalOptionDescription& other)
{
if (other.Type != Type)
throw "Conflicting definitions for the option " + Name + "!";
if (Help == DefaultHelpString)
Help = other.Help;
else if (other.Help != DefaultHelpString) {
llvm::cerr << "Warning: more than one help string defined for option "
+ Name + "\n";
}
Flags |= other.Flags;
}
};
/// GlobalOptionDescriptions - A GlobalOptionDescription array
/// together with some flags affecting generation of option
/// declarations.
struct GlobalOptionDescriptions {
typedef StringMap<GlobalOptionDescription> container_type;
typedef container_type::const_iterator const_iterator;
/// Descriptions - A list of GlobalOptionDescriptions.
container_type Descriptions;
/// HasSink - Should the emitter generate a "cl::sink" option?
bool HasSink;
/// FindOption - exception-throwing wrapper for find().
const GlobalOptionDescription& 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!";
}
/// insertDescription - Insert new GlobalOptionDescription into
/// GlobalOptionDescriptions list
void insertDescription (const GlobalOptionDescription& o)
{
container_type::iterator I = Descriptions.find(o.Name);
if (I != Descriptions.end()) {
GlobalOptionDescription& D = I->second;
D.Merge(o);
}
else {
Descriptions[o.Name] = o;
}
}
// Support for STL-style iteration
const_iterator begin() const { return Descriptions.begin(); }
const_iterator end() const { return Descriptions.end(); }
};
// Tool-local option description.
// Properties without arguments are implemented as flags.
namespace ToolOptionDescriptionFlags {
enum ToolOptionDescriptionFlags { StopCompilation = 0x1,
Forward = 0x2, UnpackValues = 0x4};
}
namespace OptionPropertyType {
enum OptionPropertyType { AppendCmd, ForwardAs, OutputSuffix };
}
typedef std::pair<OptionPropertyType::OptionPropertyType, std::string>
OptionProperty;
typedef SmallVector<OptionProperty, 4> OptionPropertyList;
struct ToolOptionDescription : public OptionDescription {
unsigned Flags;
OptionPropertyList Props;
// StringMap can only store DefaultConstructible objects
ToolOptionDescription() : OptionDescription(), Flags(0) {}
ToolOptionDescription (OptionType::OptionType t, const std::string& n)
: OptionDescription(t, n)
{}
// Various boolean properties
bool isStopCompilation() const {
return Flags & ToolOptionDescriptionFlags::StopCompilation;
}
void setStopCompilation() {
Flags |= ToolOptionDescriptionFlags::StopCompilation;
}
bool isForward() const {
return Flags & ToolOptionDescriptionFlags::Forward;
}
void setForward() {
Flags |= ToolOptionDescriptionFlags::Forward;
}
bool isUnpackValues() const {
return Flags & ToolOptionDescriptionFlags::UnpackValues;
}
void setUnpackValues() {
Flags |= ToolOptionDescriptionFlags::UnpackValues;
}
void AddProperty (OptionPropertyType::OptionPropertyType t,
const std::string& val)
{
Props.push_back(std::make_pair(t, val));
}
};
typedef StringMap<ToolOptionDescription> ToolOptionDescriptions;
// Tool information record
namespace ToolFlags {
enum ToolFlags { Join = 0x1, Sink = 0x2 };
}
struct ToolProperties : public RefCountedBase<ToolProperties> {
std::string Name;
Init* CmdLine;
StrVector InLanguage;
std::string OutLanguage;
std::string OutputSuffix;
unsigned Flags;
ToolOptionDescriptions OptDescs;
// 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
ToolProperties() : CmdLine(0), Flags(0) {}
ToolProperties (const std::string& n) : Name(n), CmdLine(0), Flags(0) {}
};
/// ToolPropertiesList - A list of Tool information records
/// IntrusiveRefCntPtrs are used here because StringMap has no copy
/// constructor (and we want to avoid copying ToolProperties anyway).
typedef std::vector<IntrusiveRefCntPtr<ToolProperties> > ToolPropertiesList;
/// CollectOptionProperties - Function object for iterating over a
/// list (usually, a DAG) of option property records.
class CollectOptionProperties {
private:
// Implementation details.
/// OptionPropertyHandler - a function that extracts information
/// about a given option property from its DAG representation.
typedef void (CollectOptionProperties::* OptionPropertyHandler)
(const DagInit*);
/// OptionPropertyHandlerMap - A map from option property names to
/// option property handlers
typedef StringMap<OptionPropertyHandler> OptionPropertyHandlerMap;
static OptionPropertyHandlerMap optionPropertyHandlers_;
static bool staticMembersInitialized_;
/// This is where the information is stored
/// toolProps_ - Properties of the current Tool.
ToolProperties* toolProps_;
/// optDescs_ - OptionDescriptions table (used to register options
/// globally).
GlobalOptionDescription& optDesc_;
public:
explicit CollectOptionProperties(ToolProperties* TP,
GlobalOptionDescription& OD)
: toolProps_(TP), optDesc_(OD)
{
if (!staticMembersInitialized_) {
optionPropertyHandlers_["append_cmd"] =
&CollectOptionProperties::onAppendCmd;
optionPropertyHandlers_["forward"] =
&CollectOptionProperties::onForward;
optionPropertyHandlers_["forward_as"] =
&CollectOptionProperties::onForwardAs;
optionPropertyHandlers_["help"] =
&CollectOptionProperties::onHelp;
optionPropertyHandlers_["output_suffix"] =
&CollectOptionProperties::onOutputSuffix;
optionPropertyHandlers_["required"] =
&CollectOptionProperties::onRequired;
optionPropertyHandlers_["stop_compilation"] =
&CollectOptionProperties::onStopCompilation;
optionPropertyHandlers_["unpack_values"] =
&CollectOptionProperties::onUnpackValues;
staticMembersInitialized_ = true;
}
}
/// operator() - Gets called for every option property; Just forwards
/// to the corresponding property handler.
void operator() (Init* i) {
const DagInit& option_property = InitPtrToDag(i);
const std::string& option_property_name
= option_property.getOperator()->getAsString();
OptionPropertyHandlerMap::iterator method
= optionPropertyHandlers_.find(option_property_name);
if (method != optionPropertyHandlers_.end()) {
OptionPropertyHandler h = method->second;
(this->*h)(&option_property);
}
else {
throw "Unknown option property: " + option_property_name + "!";
}
}
private:
/// Option property handlers --
/// Methods that handle properties that are common for all types of
/// options (like append_cmd, stop_compilation)
void onAppendCmd (const DagInit* d) {
checkNumberOfArguments(d, 1);
checkToolProps(d);
const std::string& cmd = InitPtrToString(d->getArg(0));
toolProps_->OptDescs[optDesc_.Name].
AddProperty(OptionPropertyType::AppendCmd, cmd);
}
void onOutputSuffix (const DagInit* d) {
checkNumberOfArguments(d, 1);
checkToolProps(d);
const std::string& suf = InitPtrToString(d->getArg(0));
if (toolProps_->OptDescs[optDesc_.Name].Type != OptionType::Switch)
throw "Option " + optDesc_.Name
+ " can't have 'output_suffix' property since it isn't a switch!";
toolProps_->OptDescs[optDesc_.Name].AddProperty
(OptionPropertyType::OutputSuffix, suf);
}
void onForward (const DagInit* d) {
checkNumberOfArguments(d, 0);
checkToolProps(d);
toolProps_->OptDescs[optDesc_.Name].setForward();
}
void onForwardAs (const DagInit* d) {
checkNumberOfArguments(d, 1);
checkToolProps(d);
const std::string& cmd = InitPtrToString(d->getArg(0));
toolProps_->OptDescs[optDesc_.Name].
AddProperty(OptionPropertyType::ForwardAs, cmd);
}
void onHelp (const DagInit* d) {
checkNumberOfArguments(d, 1);
const std::string& help_message = InitPtrToString(d->getArg(0));
optDesc_.Help = help_message;
}
void onRequired (const DagInit* d) {
checkNumberOfArguments(d, 0);
checkToolProps(d);
optDesc_.setRequired();
}
void onStopCompilation (const DagInit* d) {
checkNumberOfArguments(d, 0);
checkToolProps(d);
if (optDesc_.Type != OptionType::Switch)
throw std::string("Only options of type Switch can stop compilation!");
toolProps_->OptDescs[optDesc_.Name].setStopCompilation();
}
void onUnpackValues (const DagInit* d) {
checkNumberOfArguments(d, 0);
checkToolProps(d);
toolProps_->OptDescs[optDesc_.Name].setUnpackValues();
}
// Helper functions
/// checkToolProps - Throw an error if toolProps_ == 0.
void checkToolProps(const DagInit* d) {
if (!d)
throw "Option property " + d->getOperator()->getAsString()
+ " can't be used in this context";
}
};
CollectOptionProperties::OptionPropertyHandlerMap
CollectOptionProperties::optionPropertyHandlers_;
bool CollectOptionProperties::staticMembersInitialized_ = false;
/// processOptionProperties - Go through the list of option
/// properties and call a corresponding handler for each.
void processOptionProperties (const DagInit* d, ToolProperties* t,
GlobalOptionDescription& 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(t, o));
}
/// AddOption - A function object wrapper for
/// processOptionProperties. Used by CollectProperties and
/// CollectPropertiesFromOptionList.
class AddOption {
private:
GlobalOptionDescriptions& OptDescs_;
ToolProperties* ToolProps_;
public:
explicit AddOption(GlobalOptionDescriptions& OD, ToolProperties* TP = 0)
: OptDescs_(OD), ToolProps_(TP)
{}
void operator()(const Init* i) {
const DagInit& d = InitPtrToDag(i);
checkNumberOfArguments(&d, 2);
const OptionType::OptionType Type =
getOptionType(d.getOperator()->getAsString());
const std::string& Name = InitPtrToString(d.getArg(0));
GlobalOptionDescription OD(Type, Name);
if (Type != OptionType::Alias) {
processOptionProperties(&d, ToolProps_, OD);
if (ToolProps_) {
ToolProps_->OptDescs[Name].Type = Type;
ToolProps_->OptDescs[Name].Name = Name;
}
}
else {
OD.Help = InitPtrToString(d.getArg(1));
}
OptDescs_.insertDescription(OD);
}
private:
OptionType::OptionType getOptionType(const std::string& T) const {
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 + '!';
}
};
/// CollectProperties - Function object for iterating over a list of
/// tool property records.
class CollectProperties {
private:
// Implementation details
/// PropertyHandler - a function that extracts information
/// about a given tool property from its DAG representation
typedef void (CollectProperties::*PropertyHandler)(const DagInit*);
/// PropertyHandlerMap - A map from property names to property
/// handlers.
typedef StringMap<PropertyHandler> PropertyHandlerMap;
// Static maps from strings to CollectProperties methods("handlers")
static PropertyHandlerMap propertyHandlers_;
static bool staticMembersInitialized_;
/// This is where the information is stored
/// toolProps_ - Properties of the current Tool.
ToolProperties& toolProps_;
/// optDescs_ - OptionDescriptions table (used to register options
/// globally).
GlobalOptionDescriptions& optDescs_;
public:
explicit CollectProperties (ToolProperties& p, GlobalOptionDescriptions& d)
: toolProps_(p), optDescs_(d)
{
if (!staticMembersInitialized_) {
propertyHandlers_["cmd_line"] = &CollectProperties::onCmdLine;
propertyHandlers_["in_language"] = &CollectProperties::onInLanguage;
propertyHandlers_["join"] = &CollectProperties::onJoin;
propertyHandlers_["out_language"] = &CollectProperties::onOutLanguage;
propertyHandlers_["output_suffix"] = &CollectProperties::onOutputSuffix;
propertyHandlers_["parameter_option"]
= &CollectProperties::addOption;
propertyHandlers_["parameter_list_option"] =
&CollectProperties::addOption;
propertyHandlers_["prefix_option"] = &CollectProperties::addOption;
propertyHandlers_["prefix_list_option"] =
&CollectProperties::addOption;
propertyHandlers_["sink"] = &CollectProperties::onSink;
propertyHandlers_["switch_option"] = &CollectProperties::addOption;
propertyHandlers_["alias_option"] = &CollectProperties::addOption;
staticMembersInitialized_ = true;
}
}
/// operator() - Gets called for every tool property; Just forwards
/// to the corresponding property handler.
void operator() (Init* i) {
const DagInit& d = InitPtrToDag(i);
const std::string& property_name = d.getOperator()->getAsString();
PropertyHandlerMap::iterator method
= propertyHandlers_.find(property_name);
if (method != propertyHandlers_.end()) {
PropertyHandler h = method->second;
(this->*h)(&d);
}
else {
throw "Unknown tool property: " + property_name + "!";
}
}
private:
/// Property handlers --
/// Functions that extract information about tool properties from
/// DAG representation.
void onCmdLine (const DagInit* d) {
checkNumberOfArguments(d, 1);
toolProps_.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.
toolProps_.InLanguage.push_back(InitPtrToString(arg));
}
else {
// It's a list.
const ListInit& lst = InitPtrToList(arg);
StrVector& out = toolProps_.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);
toolProps_.setJoin();
}
void onOutLanguage (const DagInit* d) {
checkNumberOfArguments(d, 1);
toolProps_.OutLanguage = InitPtrToString(d->getArg(0));
}
void onOutputSuffix (const DagInit* d) {
checkNumberOfArguments(d, 1);
toolProps_.OutputSuffix = InitPtrToString(d->getArg(0));
}
void onSink (const DagInit* d) {
checkNumberOfArguments(d, 0);
optDescs_.HasSink = true;
toolProps_.setSink();
}
// Just forwards to the AddOption function object. Somewhat
// non-optimal, but avoids code duplication.
void addOption (const DagInit* d) {
checkNumberOfArguments(d, 2);
AddOption(optDescs_, &toolProps_)(d);
}
};
// Defintions of static members of CollectProperties.
CollectProperties::PropertyHandlerMap CollectProperties::propertyHandlers_;
bool CollectProperties::staticMembersInitialized_ = false;
/// CollectToolProperties - Gather information about tool properties
/// from the parsed TableGen data (basically a wrapper for the
/// CollectProperties function object).
void CollectToolProperties (RecordVector::const_iterator B,
RecordVector::const_iterator E,
ToolPropertiesList& TPList,
GlobalOptionDescriptions& OptDescs)
{
// Iterate over a properties list of every Tool definition
for (;B!=E;++B) {
Record* T = *B;
// Throws an exception if the value does not exist.
ListInit* PropList = T->getValueAsListInit("properties");
IntrusiveRefCntPtr<ToolProperties>
ToolProps(new ToolProperties(T->getName()));
std::for_each(PropList->begin(), PropList->end(),
CollectProperties(*ToolProps, OptDescs));
TPList.push_back(ToolProps);
}
}
/// CollectPropertiesFromOptionList - Gather information about
/// *global* option properties from the OptionList.
void CollectPropertiesFromOptionList (RecordVector::const_iterator B,
RecordVector::const_iterator E,
GlobalOptionDescriptions& OptDescs)
{
// Iterate over a properties list of every Tool definition
for (;B!=E;++B) {
RecordVector::value_type T = *B;
// Throws an exception if the value does not exist.
ListInit* PropList = T->getValueAsListInit("options");
std::for_each(PropList->begin(), PropList->end(), AddOption(OptDescs));
}
}
/// CheckForSuperfluousOptions - Check that there are no side
/// effect-free options (specified only in the OptionList). Otherwise,
/// output a warning.
void CheckForSuperfluousOptions (const ToolPropertiesList& TPList,
const GlobalOptionDescriptions& OptDescs) {
llvm::StringSet<> nonSuperfluousOptions;
// Add all options mentioned in the TPList to the set of
// non-superfluous options.
for (ToolPropertiesList::const_iterator B = TPList.begin(),
E = TPList.end(); B != E; ++B) {
const ToolProperties& TP = *(*B);
for (ToolOptionDescriptions::const_iterator B = TP.OptDescs.begin(),
E = TP.OptDescs.end(); B != E; ++B) {
nonSuperfluousOptions.insert(B->first());
}
}
// Check that all options in OptDescs belong to the set of
// non-superfluous options.
for (GlobalOptionDescriptions::const_iterator B = OptDescs.begin(),
E = OptDescs.end(); B != E; ++B) {
const GlobalOptionDescription& Val = B->second;
if (!nonSuperfluousOptions.count(Val.Name)
&& Val.Type != OptionType::Alias)
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 GlobalOptionDescriptions& OptDescs,
std::ostream& O) {
checkNumberOfArguments(&d, 1);
const std::string& OptName = InitPtrToString(d.getArg(0));
if (TestName == "switch_on") {
const GlobalOptionDescription& OptDesc = OptDescs.FindOption(OptName);
if (OptDesc.Type != OptionType::Switch)
throw OptName + ": incorrect option type!";
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") {
if (OptName == "o") {
O << "!OutputFilename.empty()";
return true;
}
else {
const GlobalOptionDescription& OptDesc = OptDescs.FindOption(OptName);
if (OptDesc.Type == OptionType::Switch)
throw OptName + ": incorrect option type!";
O << '!' << 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 GlobalOptionDescriptions& OptDescs,
std::ostream& O) {
checkNumberOfArguments(&d, 2);
const std::string& OptName = InitPtrToString(d.getArg(0));
const std::string& OptArg = InitPtrToString(d.getArg(1));
const GlobalOptionDescription& OptDesc = OptDescs.FindOption(OptName);
if (TestName == "parameter_equals") {
if (OptDesc.Type != OptionType::Parameter
&& OptDesc.Type != OptionType::Prefix)
throw OptName + ": incorrect option type!";
O << OptDesc.GenVariableName() << " == \"" << OptArg << "\"";
return true;
}
else if (TestName == "element_in_list") {
if (OptDesc.Type != OptionType::ParameterList
&& OptDesc.Type != OptionType::PrefixList)
throw OptName + ": incorrect option type!";
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 GlobalOptionDescriptions& OptDescs,
std::ostream& O);
/// EmitLogicalOperationTest - Helper function used by
/// EmitCaseConstructHandler.
void EmitLogicalOperationTest(const DagInit& d, const char* LogicOp,
const char* IndentLevel,
const GlobalOptionDescriptions& 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 GlobalOptionDescriptions& 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 DagInit* d, const char* IndentLevel,
F Callback, bool EmitElseIf,
const GlobalOptionDescriptions& OptDescs,
std::ostream& O) {
assert(d->getOperator()->getAsString() == "case");
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);
if (dynamic_cast<DagInit*>(arg)
&& static_cast<DagInit*>(arg)->getOperator()->getAsString() == "case") {
EmitCaseConstructHandler(static_cast<DagInit*>(arg),
(std::string(IndentLevel) + Indent1).c_str(),
Callback, EmitElseIf, OptDescs, O);
}
else {
Callback(arg, IndentLevel, O);
}
O << IndentLevel << "}\n";
}
}
/// EmitForwardOptionPropertyHandlingCode - Helper function used to
/// implement EmitOptionPropertyHandlingCode(). Emits code for
/// handling the (forward) and (forward_as) option properties.
void EmitForwardOptionPropertyHandlingCode (const ToolOptionDescription& D,
const std::string& NewName,
std::ostream& O) {
const std::string& Name = NewName.empty()
? ("-" + D.Name)
: NewName;
switch (D.Type) {
case OptionType::Switch:
O << Indent3 << "vec.push_back(\"" << Name << "\");\n";
break;
case OptionType::Parameter:
O << Indent3 << "vec.push_back(\"" << Name << "\");\n";
O << Indent3 << "vec.push_back(" << D.GenVariableName() << ");\n";
break;
case OptionType::Prefix:
O << Indent3 << "vec.push_back(\"" << Name << "\" + "
<< D.GenVariableName() << ");\n";
break;
case OptionType::PrefixList:
O << Indent3 << "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName() << ".begin(),\n"
<< Indent3 << "E = " << D.GenVariableName() << ".end(); B != E; ++B)\n"
<< Indent4 << "vec.push_back(\"" << Name << "\" + "
<< "*B);\n";
break;
case OptionType::ParameterList:
O << Indent3 << "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName() << ".begin(),\n"
<< Indent3 << "E = " << D.GenVariableName()
<< ".end() ; B != E; ++B) {\n"
<< Indent4 << "vec.push_back(\"" << Name << "\");\n"
<< Indent4 << "vec.push_back(*B);\n"
<< Indent3 << "}\n";
break;
case OptionType::Alias:
default:
throw std::string("Aliases are not allowed in tool option descriptions!");
}
}
// ToolOptionHasInterestingProperties - A helper function used by
// EmitOptionPropertyHandlingCode() that tells us whether we should
// emit any property handling code at all.
bool ToolOptionHasInterestingProperties(const ToolOptionDescription& D) {
bool ret = false;
for (OptionPropertyList::const_iterator B = D.Props.begin(),
E = D.Props.end(); B != E; ++B) {
const OptionProperty& OptProp = *B;
if (OptProp.first == OptionPropertyType::AppendCmd
|| OptProp.first == OptionPropertyType::ForwardAs)
ret = true;
}
if (D.isForward() || D.isUnpackValues())
ret = true;
return ret;
}
/// EmitOptionPropertyHandlingCode - Helper function used by
/// EmitGenerateActionMethod(). Emits code that handles option
/// properties.
void EmitOptionPropertyHandlingCode (const ToolOptionDescription& D,
std::ostream& O)
{
if (!ToolOptionHasInterestingProperties(D))
return;
// Start of the if-clause.
O << Indent2 << "if (";
if (D.Type == OptionType::Switch)
O << D.GenVariableName();
else
O << '!' << D.GenVariableName() << ".empty()";
O <<") {\n";
// Handle option properties that take an argument.
for (OptionPropertyList::const_iterator B = D.Props.begin(),
E = D.Props.end(); B!=E; ++B) {
const OptionProperty& val = *B;
switch (val.first) {
// (append_cmd cmd) property
case OptionPropertyType::AppendCmd:
O << Indent3 << "vec.push_back(\"" << val.second << "\");\n";
break;
// (forward_as) property
case OptionPropertyType::ForwardAs:
EmitForwardOptionPropertyHandlingCode(D, val.second, O);
break;
// Other properties with argument
default:
break;
}
}
// Handle flags
// (forward) property
if (D.isForward())
EmitForwardOptionPropertyHandlingCode(D, "", O);
// (unpack_values) property
if (D.isUnpackValues()) {
if (IsListOptionType(D.Type)) {
O << Indent3 << "for (" << D.GenTypeDeclaration()
<< "::iterator B = " << D.GenVariableName() << ".begin(),\n"
<< Indent3 << "E = " << D.GenVariableName()
<< ".end(); B != E; ++B)\n"
<< Indent4 << "llvm::SplitString(*B, vec, \",\");\n";
}
else if (D.Type == OptionType::Prefix || D.Type == OptionType::Parameter){
O << Indent3 << "llvm::SplitString("
<< D.GenVariableName() << ", vec, \",\");\n";
}
else {
throw std::string("Switches can't have unpack_values property!");
}
}
// End of the if-clause.
O << Indent2 << "}\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("$ENV invocation: empty argument list!");
ret += "std::getenv(\"";
ret += std::string(cmd.begin() + 5, cmd.begin() + cparen);
ret += "\")";
}
else {
throw "Unknown special command: " + cmd;
}
if (cmd.begin() + cparen + 1 != cmd.end()) {
ret += " + std::string(\"";
ret += (cmd.c_str() + cparen + 1);
ret += "\")";
}
return ret;
}
/// EmitCmdLineVecFill - Emit code that fills in the command line
/// vector. Helper function used by EmitGenerateActionMethod().
void EmitCmdLineVecFill(const Init* CmdLine, const std::string& ToolName,
bool Version, const char* IndentLevel,
std::ostream& O) {
StrVector StrVec;
SplitString(InitPtrToString(CmdLine), StrVec);
if (StrVec.empty())
throw "Tool " + ToolName + " has empty command line!";
StrVector::const_iterator I = StrVec.begin();
++I;
for (StrVector::const_iterator E = StrVec.end(); I != E; ++I) {
const std::string& cmd = *I;
O << IndentLevel;
if (cmd.at(0) == '$') {
if (cmd == "$INFILE") {
if (Version)
O << "for (PathVector::const_iterator B = inFiles.begin()"
<< ", E = inFiles.end();\n"
<< IndentLevel << "B != E; ++B)\n"
<< IndentLevel << Indent1 << "vec.push_back(B->toString());\n";
else
O << "vec.push_back(inFile.toString());\n";
}
else if (cmd == "$OUTFILE") {
O << "vec.push_back(outFile.toString());\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 Version;
const std::string& ToolName;
public:
EmitCmdLineVecFillCallback(bool Ver, const std::string& TN)
: Version(Ver), ToolName(TN) {}
void operator()(const Init* Statement, const char* IndentLevel,
std::ostream& O) const
{
EmitCmdLineVecFill(Statement, ToolName, Version,
(std::string(IndentLevel) + Indent1).c_str(), O);
}
};
// EmitGenerateActionMethod - Emit one of two versions of the
// Tool::GenerateAction() method.
void EmitGenerateActionMethod (const ToolProperties& P,
const GlobalOptionDescriptions& OptDescs,
bool Version, std::ostream& O) {
if (Version)
O << Indent1 << "Action GenerateAction(const PathVector& inFiles,\n";
else
O << Indent1 << "Action GenerateAction(const sys::Path& inFile,\n";
O << Indent2 << "const sys::Path& outFile,\n"
<< Indent2 << "const InputLanguagesSet& InLangs,\n"
<< Indent2 << "const LanguageMap& LangMap) const\n"
<< Indent1 << "{\n"
<< Indent2 << "const char* cmd;\n"
<< Indent2 << "std::vector<std::string> vec;\n";
// cmd_line is either a string or a 'case' construct.
if (typeid(*P.CmdLine) == typeid(StringInit))
EmitCmdLineVecFill(P.CmdLine, P.Name, Version, Indent2, O);
else
EmitCaseConstructHandler(&InitPtrToDag(P.CmdLine), Indent2,
EmitCmdLineVecFillCallback(Version, P.Name),
true, OptDescs, O);
// For every understood option, emit handling code.
for (ToolOptionDescriptions::const_iterator B = P.OptDescs.begin(),
E = P.OptDescs.end(); B != E; ++B) {
const ToolOptionDescription& val = B->second;
EmitOptionPropertyHandlingCode(val, O);
}
// Handle the Sink property.
if (P.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);\n"
<< Indent1 << "}\n\n";
}
/// EmitGenerateActionMethods - Emit two GenerateAction() methods for
/// a given Tool class.
void EmitGenerateActionMethods (const ToolProperties& P,
const GlobalOptionDescriptions& OptDescs,
std::ostream& O) {
if (!P.isJoin())
O << Indent1 << "Action GenerateAction(const PathVector& inFiles,\n"
<< Indent2 << "const llvm::sys::Path& outFile,\n"
<< Indent2 << "const InputLanguagesSet& InLangs,\n"
<< Indent2 << "const LanguageMap& LangMap) const\n"
<< Indent1 << "{\n"
<< Indent2 << "throw std::runtime_error(\"" << P.Name
<< " is not a Join tool!\");\n"
<< Indent1 << "}\n\n";
else
EmitGenerateActionMethod(P, OptDescs, true, O);
EmitGenerateActionMethod(P, OptDescs, false, O);
}
/// EmitIsLastMethod - Emit the IsLast() method for a given Tool
/// class.
void EmitIsLastMethod (const ToolProperties& P, std::ostream& O) {
O << Indent1 << "bool IsLast() const {\n"
<< Indent2 << "bool last = false;\n";
for (ToolOptionDescriptions::const_iterator B = P.OptDescs.begin(),
E = P.OptDescs.end(); B != E; ++B) {
const ToolOptionDescription& val = B->second;
if (val.isStopCompilation())
O << Indent2
<< "if (" << val.GenVariableName()
<< ")\n" << Indent3 << "last = true;\n";
}
O << Indent2 << "return last;\n"
<< Indent1 << "}\n\n";
}
/// EmitInOutLanguageMethods - Emit the [Input,Output]Language()
/// methods for a given Tool class.
void EmitInOutLanguageMethods (const ToolProperties& P, std::ostream& O) {
O << Indent1 << "const char** InputLanguages() const {\n"
<< Indent2 << "return InputLanguages_;\n"
<< Indent1 << "}\n\n";
O << Indent1 << "const char* OutputLanguage() const {\n"
<< Indent2 << "return \"" << P.OutLanguage << "\";\n"
<< Indent1 << "}\n\n";
}
/// EmitOutputSuffixMethod - Emit the OutputSuffix() method for a
/// given Tool class.
void EmitOutputSuffixMethod (const ToolProperties& P, std::ostream& O) {
O << Indent1 << "const char* OutputSuffix() const {\n"
<< Indent2 << "const char* ret = \"" << P.OutputSuffix << "\";\n";
for (ToolOptionDescriptions::const_iterator B = P.OptDescs.begin(),
E = P.OptDescs.end(); B != E; ++B) {
const ToolOptionDescription& OptDesc = B->second;
for (OptionPropertyList::const_iterator B = OptDesc.Props.begin(),
E = OptDesc.Props.end(); B != E; ++B) {
const OptionProperty& OptProp = *B;
if (OptProp.first == OptionPropertyType::OutputSuffix) {
O << Indent2 << "if (" << OptDesc.GenVariableName() << ")\n"
<< Indent3 << "ret = \"" << OptProp.second << "\";\n";
}
}
}
O << Indent2 << "return ret;\n"
<< Indent1 << "}\n\n";
}
/// EmitNameMethod - Emit the Name() method for a given Tool class.
void EmitNameMethod (const ToolProperties& P, std::ostream& O) {
O << Indent1 << "const char* Name() const {\n"
<< Indent2 << "return \"" << P.Name << "\";\n"
<< Indent1 << "}\n\n";
}
/// EmitIsJoinMethod - Emit the IsJoin() method for a given Tool
/// class.
void EmitIsJoinMethod (const ToolProperties& P, std::ostream& O) {
O << Indent1 << "bool IsJoin() const {\n";
if (P.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 ToolProperties& P, std::ostream& O) {
O << "const char* " << P.Name << "::InputLanguages_[] = {";
for (StrVector::const_iterator B = P.InLanguage.begin(),
E = P.InLanguage.end(); B != E; ++B)
O << '\"' << *B << "\", ";
O << "0};\n\n";
}
/// EmitToolClassDefinition - Emit a Tool class definition.
void EmitToolClassDefinition (const ToolProperties& P,
const GlobalOptionDescriptions& OptDescs,
std::ostream& O) {
if (P.Name == "root")
return;
// Header
O << "class " << P.Name << " : public ";
if (P.isJoin())
O << "JoinTool";
else
O << "Tool";
O << "{\nprivate:\n"
<< Indent1 << "static const char* InputLanguages_[];\n\n";
O << "public:\n";
EmitNameMethod(P, O);
EmitInOutLanguageMethods(P, O);
EmitOutputSuffixMethod(P, O);
EmitIsJoinMethod(P, O);
EmitGenerateActionMethods(P, OptDescs, O);
EmitIsLastMethod(P, O);
// Close class definition
O << "};\n";
EmitStaticMemberDefinitions(P, O);
}
/// EmitOptionDescriptions - Iterate over a list of option
/// descriptions and emit registration code.
void EmitOptionDescriptions (const GlobalOptionDescriptions& descs,
std::ostream& O)
{
std::vector<GlobalOptionDescription> Aliases;
// Emit static cl::Option variables.
for (GlobalOptionDescriptions::const_iterator B = descs.begin(),
E = descs.end(); B!=E; ++B) {
const GlobalOptionDescription& val = B->second;
if (val.Type == OptionType::Alias) {
Aliases.push_back(val);
continue;
}
O << val.GenTypeDeclaration() << ' '
<< val.GenVariableName()
<< "(\"" << 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.Help.empty())
O << ", cl::desc(\"" << val.Help << "\")";
O << ");\n";
}
// Emit the aliases (they should go after all the 'proper' options).
for (std::vector<GlobalOptionDescription>::const_iterator
B = Aliases.begin(), E = Aliases.end(); B != E; ++B) {
const GlobalOptionDescription& val = *B;
O << val.GenTypeDeclaration() << ' '
<< val.GenVariableName()
<< "(\"" << val.Name << '\"';
GlobalOptionDescriptions::container_type
::const_iterator F = descs.Descriptions.find(val.Help);
if (F != descs.Descriptions.end())
O << ", cl::aliasopt(" << F->second.GenVariableName() << ")";
else
throw val.Name + ": alias to an unknown option!";
O << ", cl::desc(\"" << "An alias for -" + val.Help << "\"));\n";
}
// Emit the sink option.
if (descs.HasSink)
O << "cl::list<std::string> " << SinkOptionName << "(cl::Sink);\n";
O << '\n';
}
/// EmitPopulateLanguageMap - Emit the PopulateLanguageMap() function.
void EmitPopulateLanguageMap (const RecordKeeper& Records, std::ostream& O)
{
// Get the relevant field out of RecordKeeper
Record* LangMapRecord = Records.getDef("LanguageMap");
if (!LangMapRecord)
throw std::string("Language map definition not found!");
ListInit* LangsToSuffixesList = LangMapRecord->getValueAsListInit("map");
if (!LangsToSuffixesList)
throw std::string("Error in the language map definition!");
// Generate code
O << "namespace {\n\n";
O << "void PopulateLanguageMapLocal(LanguageMap& langMap) {\n";
for (unsigned i = 0; i < LangsToSuffixesList->size(); ++i) {
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}\n\n";
}
/// FillInToolToLang - Fills in two tables that map tool names to
/// (input, output) languages. Used by the typechecker.
void FillInToolToLang (const ToolPropertiesList& TPList,
StringMap<StringSet<> >& ToolToInLang,
StringMap<std::string>& ToolToOutLang) {
for (ToolPropertiesList::const_iterator B = TPList.begin(), E = TPList.end();
B != E; ++B) {
const ToolProperties& P = *(*B);
for (StrVector::const_iterator B = P.InLanguage.begin(),
E = P.InLanguage.end(); B != E; ++B)
ToolToInLang[P.Name].insert(*B);
ToolToOutLang[P.Name] = P.OutLanguage;
}
}
/// TypecheckGraph - Check that names for output and input languages
/// on all edges do match.
// TOFIX: It would be nice if this function also checked for cycles
// and multiple default edges in the graph (better error
// reporting). Unfortunately, it is awkward to do right now because
// our intermediate representation is not sufficiently
// sophisticated. Algorithms like these require a real graph instead of
// an AST.
void TypecheckGraph (Record* CompilationGraph,
const ToolPropertiesList& TPList) {
StringMap<StringSet<> > ToolToInLang;
StringMap<std::string> ToolToOutLang;
FillInToolToLang(TPList, ToolToInLang, ToolToOutLang);
ListInit* edges = CompilationGraph->getValueAsListInit("edges");
StringMap<std::string>::iterator IAE = ToolToOutLang.end();
StringMap<StringSet<> >::iterator IBE = ToolToInLang.end();
for (unsigned i = 0; i < edges->size(); ++i) {
Record* Edge = edges->getElementAsRecord(i);
Record* A = Edge->getValueAsDef("a");
Record* B = Edge->getValueAsDef("b");
StringMap<std::string>::iterator IA = ToolToOutLang.find(A->getName());
StringMap<StringSet<> >::iterator IB = ToolToInLang.find(B->getName());
if (IA == IAE)
throw A->getName() + ": no such tool!";
if (IB == IBE)
throw B->getName() + ": no such tool!";
if (A->getName() != "root" && IB->second.count(IA->second) == 0)
throw "Edge " + A->getName() + "->" + B->getName()
+ ": output->input language mismatch";
if (B->getName() == "root")
throw std::string("Edges back to the root are not allowed!");
}
}
/// 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 << Indent1 << "ret += ";
else if (OpName == "dec_weight")
O << IndentLevel << Indent1 << "ret -= ";
else
throw "Unknown operator in edge properties list: " + OpName + '!';
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 GlobalOptionDescriptions& 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 (Record* CompilationGraph,
const GlobalOptionDescriptions& OptDescs,
std::ostream& O) {
ListInit* edges = CompilationGraph->getValueAsListInit("edges");
for (unsigned i = 0; i < edges->size(); ++i) {
Record* Edge = edges->getElementAsRecord(i);
Record* B = Edge->getValueAsDef("b");
DagInit* Weight = Edge->getValueAsDag("weight");
if (isDagEmpty(Weight))
continue;
EmitEdgeClass(i, B->getName(), Weight, OptDescs, O);
}
}
/// EmitPopulateCompilationGraph - Emit the PopulateCompilationGraph()
/// function.
void EmitPopulateCompilationGraph (Record* CompilationGraph,
std::ostream& O)
{
ListInit* edges = CompilationGraph->getValueAsListInit("edges");
// Generate code
O << "namespace {\n\n";
O << "void PopulateCompilationGraphLocal(CompilationGraph& G) {\n";
// Insert vertices
RecordVector Tools = Records.getAllDerivedDefinitions("Tool");
if (Tools.empty())
throw std::string("No tool definitions found!");
for (RecordVector::iterator B = Tools.begin(), E = Tools.end(); B != E; ++B) {
const std::string& Name = (*B)->getName();
if (Name != "root")
O << Indent1 << "G.insertNode(new "
<< Name << "());\n";
}
O << '\n';
// Insert edges
for (unsigned i = 0; i < edges->size(); ++i) {
Record* Edge = edges->getElementAsRecord(i);
Record* A = Edge->getValueAsDef("a");
Record* B = Edge->getValueAsDef("b");
DagInit* Weight = Edge->getValueAsDag("weight");
O << Indent1 << "G.insertEdge(\"" << A->getName() << "\", ";
if (isDagEmpty(Weight))
O << "new SimpleEdge(\"" << B->getName() << "\")";
else
O << "new Edge" << i << "()";
O << ");\n";
}
O << "}\n\n}\n\n";
}
/// ExtractHookNames - Extract the hook names from all instances of
/// $CALL(HookName) in the provided command line string. Helper
/// function used by FillInHookNames().
void ExtractHookNames(const Init* CmdLine, StrVector& HookNames) {
StrVector cmds;
llvm::SplitString(InitPtrToString(CmdLine), cmds);
for (StrVector::const_iterator B = cmds.begin(), E = cmds.end();
B != E; ++B) {
const std::string& cmd = *B;
if (cmd.find("$CALL(") == 0) {
if (cmd.size() == 6)
throw std::string("$CALL invocation: empty argument list!");
HookNames.push_back(std::string(cmd.begin() + 6,
cmd.begin() + cmd.find(")")));
}
}
}
/// ExtractHookNamesFromCaseConstruct - Extract hook names from the
/// 'case' expression, handle nesting. Helper function used by
/// FillInHookNames().
void ExtractHookNamesFromCaseConstruct(Init* Case, StrVector& HookNames) {
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")
ExtractHookNamesFromCaseConstruct(arg, HookNames);
else if (even)
ExtractHookNames(arg, HookNames);
even = !even;
}
}
/// FillInHookNames - Actually extract the hook names from all command
/// line strings. Helper function used by EmitHookDeclarations().
void FillInHookNames(const ToolPropertiesList& TPList,
StrVector& HookNames) {
// For all command lines:
for (ToolPropertiesList::const_iterator B = TPList.begin(),
E = TPList.end(); B != E; ++B) {
const ToolProperties& P = *(*B);
if (!P.CmdLine)
continue;
if (dynamic_cast<StringInit*>(P.CmdLine))
// This is a string.
ExtractHookNames(P.CmdLine, HookNames);
else
// This is a 'case' construct.
ExtractHookNamesFromCaseConstruct(P.CmdLine, 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 ToolPropertiesList& ToolProps,
std::ostream& O) {
StrVector HookNames;
FillInHookNames(ToolProps, HookNames);
if (HookNames.empty())
return;
std::sort(HookNames.begin(), HookNames.end());
StrVector::const_iterator E = std::unique(HookNames.begin(), HookNames.end());
O << "namespace hooks {\n";
for (StrVector::const_iterator B = HookNames.begin(); B != E; ++B)
O << Indent1 << "std::string " << *B << "();\n";
O << "}\n\n";
}
/// EmitRegisterPlugin - Emit code to register this plugin.
void EmitRegisterPlugin(std::ostream& O) {
O << "namespace {\n\n"
<< "struct Plugin : public llvmc::BasePlugin {\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}\n\n";
}
/// EmitInclude - Emit necessary #include directives.
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";
}
// End of anonymous namespace
}
/// run - The back-end entry point.
void LLVMCConfigurationEmitter::run (std::ostream &O) {
try {
// Emit file header.
EmitSourceFileHeader("LLVMC Configuration Library", O);
EmitIncludes(O);
// Get a list of all defined Tools.
RecordVector Tools = Records.getAllDerivedDefinitions("Tool");
if (Tools.empty())
throw std::string("No tool definitions found!");
// Gather information from the Tool description dags.
ToolPropertiesList tool_props;
GlobalOptionDescriptions opt_descs;
CollectToolProperties(Tools.begin(), Tools.end(), tool_props, opt_descs);
RecordVector OptionLists = Records.getAllDerivedDefinitions("OptionList");
CollectPropertiesFromOptionList(OptionLists.begin(), OptionLists.end(),
opt_descs);
// Check that there are no options without side effects (specified
// only in the OptionList).
CheckForSuperfluousOptions(tool_props, opt_descs);
// Emit global option registration code.
EmitOptionDescriptions(opt_descs, O);
// Emit hook declarations.
EmitHookDeclarations(tool_props, O);
// Emit PopulateLanguageMap() function
// (a language map maps from file extensions to language names).
EmitPopulateLanguageMap(Records, O);
// Emit Tool classes.
for (ToolPropertiesList::const_iterator B = tool_props.begin(),
E = tool_props.end(); B!=E; ++B)
EmitToolClassDefinition(*(*B), opt_descs, O);
Record* CompilationGraphRecord = Records.getDef("CompilationGraph");
if (!CompilationGraphRecord)
throw std::string("Compilation graph description not found!");
// Typecheck the compilation graph.
TypecheckGraph(CompilationGraphRecord, tool_props);
// Emit Edge# classes.
EmitEdgeClasses(CompilationGraphRecord, opt_descs, O);
// Emit PopulateCompilationGraph() function.
EmitPopulateCompilationGraph(CompilationGraphRecord, O);
// Emit code for plugin registration.
EmitRegisterPlugin(O);
// EOF
} catch (std::exception& Error) {
throw Error.what() + std::string(" - usually this means a syntax error.");
}
}
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