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source: src/main.cc @ 9ef9644

ADTast-experimentalenumpthread-emulationqualifiedEnum

Last change on this file since 9ef9644 was 9490621, checked in by Andrew Beach <ajbeach@…>, 2 years ago
My work in progress implementation of ForallPointerDecay? for Fangren.
Property mode set to `100644`
File size: 31.9 KB

Rev	Line
[b87a5ed]	1	//
	2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
	3	//
	4	// The contents of this file are covered under the licence agreement in the
	5	// file "LICENCE" distributed with Cforall.
	6	//
[71f4e4f]	7	// main.cc --
[b87a5ed]	8	//
[3e96559]	9	// Author : Peter Buhr and Rob Schluntz
[b87a5ed]	10	// Created On : Fri May 15 23:12:02 2015
[68fe946e]	11	// Last Modified By : Andrew Beach
[a488783]	12	// Last Modified On : Wed Jan 26 14:09:00 2022
	13	// Update Count : 670
[b87a5ed]	14	//
	15
[bf2438c]	16	#include <cxxabi.h> // for __cxa_demangle
	17	#include <execinfo.h> // for backtrace, backtrace_symbols
	18	#include <getopt.h> // for no_argument, optind, geto...
[08fc48f]	19	#include <cassert> // for assertf
[bf2438c]	20	#include <cstdio> // for fopen, FILE, fclose, stdin
	21	#include <cstdlib> // for exit, free, abort, EXIT_F...
[bffcd66]	22	#include <csignal> // for signal, SIGABRT, SIGSEGV
[bf2438c]	23	#include <cstring> // for index
[be9288a]	24	#include <fstream> // for ofstream
[bf2438c]	25	#include <iostream> // for operator<<, basic_ostream
[62ce290]	26	#include <iomanip>
[bf2438c]	27	#include <iterator> // for back_inserter
	28	#include <list> // for list
[08fc48f]	29	#include <string> // for char_traits, operator<<
[e6955b1]	30
[bffcd66]	31	using namespace std;
	32
[9ea38de]	33	#include "AST/Convert.hpp"
[9490621]	34	#include "AST/Print.hpp"
[7f38b67a]	35	#include "CompilationState.h"
[bf2438c]	36	#include "../config.h" // for CFA_LIBDIR
	37	#include "CodeGen/FixMain.h" // for FixMain
	38	#include "CodeGen/FixNames.h" // for fixNames
	39	#include "CodeGen/Generate.h" // for generate
[aff7e86]	40	#include "CodeGen/LinkOnce.h" // for translateLinkOnce
[bf2438c]	41	#include "CodeTools/DeclStats.h" // for printDeclStats
[3b3491b]	42	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
[bf2438c]	43	#include "CodeTools/TrackLoc.h" // for fillLocations
[f57faf6f]	44	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
[bf2438c]	45	#include "Common/CompilerError.h" // for CompilerError
[55cbff8]	46	#include "Common/DeclStats.hpp" // for printDeclStats
	47	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
[7abee38]	48	#include "Common/Stats.h"
[cbbd5b48]	49	#include "Common/PassVisitor.h"
[bf2438c]	50	#include "Common/SemanticError.h" // for SemanticError
	51	#include "Common/UnimplementedError.h" // for UnimplementedError
	52	#include "Common/utility.h" // for deleteAll, filter, printAll
[2cf3b87]	53	#include "Concurrency/Keywords.h" // for implementMutex, implement...
[9f5ecf5]	54	#include "Concurrency/Waitfor.h" // for generateWaitfor
[0c730d9]	55	#include "ControlStruct/ExceptDecl.h" // for translateExcept
[bf2438c]	56	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
[b8ab91a]	57	#include "ControlStruct/FixLabels.hpp" // for fixLabels
[a488783]	58	#include "ControlStruct/HoistControlDecls.hpp" // hoistControlDecls
[bf2438c]	59	#include "ControlStruct/Mutate.h" // for mutate
	60	#include "GenPoly/Box.h" // for box
	61	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
	62	#include "GenPoly/Lvalue.h" // for convertLvalue
	63	#include "GenPoly/Specialize.h" // for convertSpecializations
	64	#include "InitTweak/FixInit.h" // for fix
	65	#include "InitTweak/GenInit.h" // for genInit
	66	#include "MakeLibCfa.h" // for makeLibCfa
	67	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
	68	#include "Parser/TypedefTable.h" // for TypedefTable
	69	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
[1622af5]	70	#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
[bf2438c]	71	#include "ResolvExpr/Resolver.h" // for resolve
	72	#include "SymTab/Validate.h" // for validate
[bffcd66]	73	#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
[bf2438c]	74	#include "SynTree/Declaration.h" // for Declaration
	75	#include "SynTree/Visitor.h" // for acceptAll
	76	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
[a488783]	77	#include "Validate/Autogen.hpp" // for autogenerateRoutines
[ce36b55]	78	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
[9490621]	79	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
[2cf3b87]	80	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
[ce36b55]	81	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
	82	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
[a5f0529]	83	#include "Virtual/ExpandCasts.h" // for expandCasts
[51b7345]	84
[3e96559]	85	static void NewPass( const char * const name ) {
	86	Stats::Heap::newPass( name );
[1cb7fab2]	87	using namespace Stats::Counters;
[b8665e3]	88	{
[3e96559]	89	static auto group = build<CounterGroup>( "Pass Visitor" );
	90	auto pass = build<CounterGroup>( name, group );
[b8665e3]	91	pass_visitor_stats.depth = 0;
[3e96559]	92	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
	93	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
[b8665e3]	94	}
	95	{
[3e96559]	96	static auto group = build<CounterGroup>( "Syntax Node" );
	97	auto pass = build<CounterGroup>( name, group );
	98	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
[b8665e3]	99	}
[675716e]	100	}
	101
[3e96559]	102	#define PASS( name, pass ) \
[ecaeac6e]	103	if ( errorp ) { cerr << name << endl; } \
[675716e]	104	NewPass(name); \
[4f97937]	105	Stats::Time::StartBlock(name); \
	106	pass; \
	107	Stats::Time::StopBlock();
[0da3e2c]	108
[8b7ee09]	109	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
[0da3e2c]	110	TypedefTable typedefTable;
[cbaee0d]	111	DeclarationNode * parseTree = nullptr; // program parse tree
[81419b5]	112
[ef22ad6]	113	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
[dee1f89]	114
[bffcd66]	115	static string PreludeDirector = "";
[4dcaed2]	116
[77d601f]	117	static void parse_cmdline( int argc, char * argv[] );
[8b7ee09]	118	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
[e6955b1]	119	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
[e499381]	120	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
[e6955b1]	121
[0afffee]	122	static void backtrace( int start ) { // skip first N stack frames
[74330e7]	123	enum { Frames = 50, }; // maximum number of stack frames
[e6955b1]	124	void * array[Frames];
[74330e7]	125	size_t size = ::backtrace( array, Frames );
[0afffee]	126	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
	127
	128	*index( messages[0], '(' ) = '\0'; // find executable name
	129	cerr << "Stack back trace for: " << messages[0] << endl;
[e6955b1]	130
[b542bfb]	131	// skip last 2 stack frames after main
[74330e7]	132	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
[e6955b1]	133	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
[7006ba5]	134
	135	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
[0afffee]	136	if ( *p == '(' ) {
[46f6134]	137	mangled_name = p;
[0afffee]	138	} else if ( *p == '+' ) {
[e6955b1]	139	offset_begin = p;
[0afffee]	140	} else if ( *p == ')' ) {
[e6955b1]	141	offset_end = p;
	142	break;
	143	} // if
	144	} // for
	145
	146	// if line contains symbol, attempt to demangle
[b542bfb]	147	int frameNo = i - start;
[e6955b1]	148	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
[0afffee]	149	*mangled_name++ = '\0'; // delimit strings
[e6955b1]	150	*offset_begin++ = '\0';
	151	*offset_end++ = '\0';
	152
[0afffee]	153	int status;
[e6955b1]	154	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
[0afffee]	155	// bug in __cxa_demangle for single-character lower-case non-mangled names
[e6955b1]	156	if ( status == 0 ) { // demangling successful ?
[b542bfb]	157	cerr << "(" << frameNo << ") " << messages[i] << " : "
[e6955b1]	158	<< real_name << "+" << offset_begin << offset_end << endl;
	159	} else { // otherwise, output mangled name
[b542bfb]	160	cerr << "(" << frameNo << ") " << messages[i] << " : "
[0afffee]	161	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
[e6955b1]	162	} // if
[0afffee]	163
[e6955b1]	164	free( real_name );
	165	} else { // otherwise, print the whole line
[b542bfb]	166	cerr << "(" << frameNo << ") " << messages[i] << endl;
[e6955b1]	167	} // if
	168	} // for
[b542bfb]	169
[e6955b1]	170	free( messages );
[b542bfb]	171	} // backtrace
	172
[bffcd66]	173	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
	174
[1f68d5d]	175	static void _Signal(struct sigaction & act, int sig, int flags ) {
[bffcd66]	176	act.sa_flags = flags;
	177
	178	if ( sigaction( sig, &act, nullptr ) == -1 ) {
[77d601f]	179	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
[bffcd66]	180	_exit( EXIT_FAILURE );
	181	} // if
[1f68d5d]	182	}
	183
	184	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
	185	struct sigaction act;
	186	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
	187	_Signal(act, sig, flags);
	188	} // Signal
	189
	190	static void Signal( int sig, void (* handler)(int), int flags ) {
	191	struct sigaction act;
	192	act.sa_handler = handler;
	193	_Signal(act, sig, flags);
[bffcd66]	194	} // Signal
	195
	196	static void sigSegvBusHandler( SIGPARMS ) {
	197	if ( sfp->si_addr == nullptr ) {
	198	cerr << "Null pointer (nullptr) dereference." << endl;
	199	} else {
	200	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
	201	<< "Possible cause is reading outside the address space or writing to a protected area within the address space with an invalid pointer or subscript." << endl;
	202	} // if
[b542bfb]	203	backtrace( 2 ); // skip first 2 stack frames
[3e96559]	204	abort(); // cause core dump for debugging
[e6955b1]	205	} // sigSegvBusHandler
[0da3e2c]	206
[74330e7]	207	static void sigFpeHandler( SIGPARMS ) {
	208	const char * msg;
	209
	210	switch ( sfp->si_code ) {
	211	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
	212	case FPE_FLTOVF: msg = "overflow"; break;
	213	case FPE_FLTUND: msg = "underflow"; break;
	214	case FPE_FLTRES: msg = "inexact result"; break;
	215	case FPE_FLTINV: msg = "invalid operation"; break;
	216	default: msg = "unknown";
	217	} // choose
	218	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
	219	<< "Possible cause is constant-expression evaluation invalid." << endl;
	220	backtrace( 2 ); // skip first 2 stack frames
	221	abort(); // cause core dump for debugging
	222	} // sigFpeHandler
	223
[bffcd66]	224	static void sigAbortHandler( SIGPARMS ) {
[b542bfb]	225	backtrace( 6 ); // skip first 6 stack frames
[1f68d5d]	226	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
[9be45a2]	227	raise( SIGABRT ); // reraise SIGABRT
[b542bfb]	228	} // sigAbortHandler
	229
[cbaee0d]	230	int main( int argc, char * argv[] ) {
[3b8e52c]	231	FILE * input; // use FILE rather than istream because yyin is FILE
[d08beee]	232	ostream * output = & cout;
[e6955b1]	233	list< Declaration * > translationUnit;
	234
[bffcd66]	235	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
	236	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
[74330e7]	237	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
[bffcd66]	238	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
[b87a5ed]	239
[bffcd66]	240	// cout << "main" << endl;
[44bca7f]	241	// for ( int i = 0; i < argc; i += 1 ) {
[bffcd66]	242	// cout << '\t' << argv[i] << endl;
[44bca7f]	243	// } // for
	244
[e0bd0f9]	245	parse_cmdline( argc, argv ); // process command-line arguments
[13de47bc]	246	CodeGen::FixMain::setReplaceMain( !nomainp );
[b87a5ed]	247
[ef22ad6]	248	if ( waiting_for_gdb ) {
[bffcd66]	249	cerr << "Waiting for gdb" << endl;
	250	cerr << "run :" << endl;
	251	cerr << " gdb attach " << getpid() << endl;
[dee1f89]	252	raise(SIGSTOP);
[ef22ad6]	253	} // if
[dee1f89]	254
[b87a5ed]	255	try {
[81419b5]	256	// choose to read the program from a file or stdin
[3b8e52c]	257	if ( optind < argc ) { // any commands after the flags ? => input file name
[b87a5ed]	258	input = fopen( argv[ optind ], "r" );
[e0bd0f9]	259	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
[b87a5ed]	260	optind += 1;
[3b8e52c]	261	} else { // no input file name
[b87a5ed]	262	input = stdin;
	263	} // if
	264
[79eaeb7]	265	Stats::Time::StartGlobal();
[3c0d4cd]	266	NewPass("Parse");
	267	Stats::Time::StartBlock("Parse");
[675716e]	268
[159c62e]	269	// read in the builtins, extras, and the prelude
[de62360d]	270	if ( ! nopreludep ) { // include gcc builtins
[faf8857]	271	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
[807ce84]	272
[37fe352]	273	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
[4dcaed2]	274
[807ce84]	275	// Read to gcc builtins, if not generating the cfa library
[37fe352]	276	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
[6ce3ae9]	277	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
	278	parse( gcc_builtins, LinkageSpec::Compiler );
[81419b5]	279
[159c62e]	280	// read the extra prelude in, if not generating the cfa library
[37fe352]	281	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
[3b8e52c]	282	assertf( extras, "cannot open extras.cf\n" );
[f0994a1]	283	parse( extras, LinkageSpec::BuiltinC );
[159c62e]	284
[81419b5]	285	if ( ! libcfap ) {
[faf8857]	286	// read the prelude in, if not generating the cfa library
[e523b07]	287	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
	288	assertf( prelude, "cannot open prelude.cfa\n" );
[35304009]	289	parse( prelude, LinkageSpec::Intrinsic );
[fa4805f]	290
	291	// Read to cfa builtins, if not generating the cfa library
[37fe352]	292	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
[fa4805f]	293	assertf( builtins, "cannot open builtins.cf\n" );
[54d714e]	294	parse( builtins, LinkageSpec::BuiltinCFA );
[b87a5ed]	295	} // if
	296	} // if
[81419b5]	297
[926af74]	298	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
[71f4e4f]	299
[b87a5ed]	300	if ( parsep ) {
[e6955b1]	301	parseTree->printList( cout );
[0da3e2c]	302	delete parseTree;
[3e96559]	303	return EXIT_SUCCESS;
[b87a5ed]	304	} // if
	305
[0da3e2c]	306	buildList( parseTree, translationUnit );
	307	delete parseTree;
[cbaee0d]	308	parseTree = nullptr;
[b87a5ed]	309
	310	if ( astp ) {
[1ab4ce2]	311	dump( translationUnit );
[3e96559]	312	return EXIT_SUCCESS;
[b87a5ed]	313	} // if
	314
[036dd5f]	315	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
	316	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
	317	// works okay for now.
	318	CodeTools::fillLocations( translationUnit );
[3c0d4cd]	319	Stats::Time::StopBlock();
[036dd5f]	320
[0c730d9]	321	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
[00da199]	322	if ( exdeclp ) {
	323	dump( translationUnit );
	324	return EXIT_SUCCESS;
	325	} // if
[0c730d9]	326
[839ccbb]	327	// add the assignment statement after the initialization of a type parameter
[5dcb881]	328	PASS( "Validate-A", SymTab::validate_A( translationUnit ) );
	329	PASS( "Validate-B", SymTab::validate_B( translationUnit ) );
	330	PASS( "Validate-C", SymTab::validate_C( translationUnit ) );
[b87a5ed]	331
[76b378d]	332	CodeTools::fillLocations( translationUnit );
	333
[4a8f150]	334	if( useNewAST ) {
[9490621]	335	PASS( "Implement Concurrent Keywords", Concurrency::applyKeywords( translationUnit ) );
	336	//PASS( "Forall Pointer Decay - A", SymTab::decayForallPointersA( translationUnit ) );
	337	//PASS( "Forall Pointer Decay - B", SymTab::decayForallPointersB( translationUnit ) );
	338	//PASS( "Forall Pointer Decay - C", SymTab::decayForallPointersC( translationUnit ) );
	339	//PASS( "Forall Pointer Decay - D", SymTab::decayForallPointersD( translationUnit ) );
[a488783]	340	CodeTools::fillLocations( translationUnit );
	341
[3746f777]	342	if (Stats::Counters::enabled) {
	343	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
	344	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
	345	}
[9ea38de]	346	auto transUnit = convert( move( translationUnit ) );
[9f5a19fa]	347
[68fe946e]	348	forceFillCodeLocations( transUnit );
	349
[9490621]	350	// Must be after implement concurrent keywords; because uniqueIds
	351	// must be set on declaration before resolution.
	352	// Must happen before autogen routines are added.
	353	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
	354
[a488783]	355	// Must happen before autogen routines are added.
	356	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
	357
	358	// Must be after enum and pointer decay.
	359	// Must be before compound literals.
	360	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
	361
[2cf3b87]	362	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
	363	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
	364	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
[ce36b55]	365	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
	366	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
	367	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
	368
[1622af5]	369	if ( symtabp ) {
	370	return EXIT_SUCCESS;
	371	} // if
	372
	373	if ( expraltp ) {
	374	ResolvExpr::printCandidates( transUnit );
	375	return EXIT_SUCCESS;
	376	} // if
	377
	378	if ( validp ) {
	379	dump( move( transUnit ) );
	380	return EXIT_SUCCESS;
	381	} // if
	382
[5ee153d]	383	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
[b8ab91a]	384	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
[0c577f7]	385	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
[a36eb2d]	386	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
[9f5a19fa]	387	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
[68fe946e]	388
[da6396f]	389	if ( libcfap ) {
	390	// Generate the bodies of cfa library functions.
	391	LibCfa::makeLibCfa( transUnit );
	392	} // if
[68fe946e]	393
	394	if ( declstatsp ) {
	395	printDeclStats( transUnit );
	396	return EXIT_SUCCESS;
	397	} // if
	398
	399	if ( bresolvep ) {
	400	dump( move( transUnit ) );
	401	return EXIT_SUCCESS;
	402	} // if
	403
	404	if ( resolvprotop ) {
[55cbff8]	405	dumpAsResolverProto( transUnit );
[68fe946e]	406	return EXIT_SUCCESS;
	407	} // if
	408
[9ea38de]	409	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
[490fb92e]	410	if ( exprp ) {
[e499381]	411	dump( move( transUnit ) );
[490fb92e]	412	return EXIT_SUCCESS;
	413	} // if
	414
[f57faf6f]	415	forceFillCodeLocations( transUnit );
[4a8f150]	416
[490fb92e]	417	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
[da6396f]	418
[01d433e]	419	// fix ObjectDecl - replaces ConstructorInit nodes
	420	if ( ctorinitp ) {
	421	dump( move( transUnit ) );
	422	return EXIT_SUCCESS;
	423	} // if
	424
	425	// Currently not working due to unresolved issues with UniqueExpr
	426	PASS( "Expand Unique Expr", Tuples::expandUniqueExpr( transUnit ) ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused
[5f3ba11]	427
	428	PASS( "Translate Tries" , ControlStruct::translateTries( transUnit ) );
	429
[9ea38de]	430	translationUnit = convert( move( transUnit ) );
[a77257be]	431	} else {
[a488783]	432	PASS( "Validate-D", SymTab::validate_D( translationUnit ) );
[2cf3b87]	433	PASS( "Validate-E", SymTab::validate_E( translationUnit ) );
[ce36b55]	434	PASS( "Validate-F", SymTab::validate_F( translationUnit ) );
	435
[1622af5]	436	if ( symtabp ) {
	437	deleteAll( translationUnit );
	438	return EXIT_SUCCESS;
	439	} // if
	440
	441	if ( expraltp ) {
	442	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
	443	acceptAll( translationUnit, printer );
	444	return EXIT_SUCCESS;
	445	} // if
	446
	447	if ( validp ) {
	448	dump( translationUnit );
	449	return EXIT_SUCCESS;
	450	} // if
	451
[5ee153d]	452	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
[b8ab91a]	453	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
[0c577f7]	454	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
[a36eb2d]	455	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
[9f5a19fa]	456	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
	457
[da6396f]	458	if ( libcfap ) {
	459	// Generate the bodies of cfa library functions.
	460	LibCfa::makeLibCfa( translationUnit );
	461	} // if
[68fe946e]	462
	463	if ( declstatsp ) {
	464	CodeTools::printDeclStats( translationUnit );
	465	deleteAll( translationUnit );
	466	return EXIT_SUCCESS;
	467	} // if
	468
	469	if ( bresolvep ) {
	470	dump( translationUnit );
	471	return EXIT_SUCCESS;
	472	} // if
	473
	474	CodeTools::fillLocations( translationUnit );
	475
	476	if ( resolvprotop ) {
	477	CodeTools::dumpAsResolvProto( translationUnit );
	478	return EXIT_SUCCESS;
	479	} // if
	480
[a77257be]	481	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
[490fb92e]	482	if ( exprp ) {
	483	dump( translationUnit );
	484	return EXIT_SUCCESS;
	485	}
[4615ac8]	486
[490fb92e]	487	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
[81419b5]	488
[01d433e]	489	// fix ObjectDecl - replaces ConstructorInit nodes
	490	if ( ctorinitp ) {
	491	dump ( translationUnit );
	492	return EXIT_SUCCESS;
	493	} // if
[71f4e4f]	494
[01d433e]	495	PASS( "Expand Unique Expr", Tuples::expandUniqueExpr( translationUnit ) ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused
[5f3ba11]	496
	497	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
[01d433e]	498	}
[626dbc10]	499
[5f3ba11]	500
[6edd210]	501
[675716e]	502	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
[307a732]	503
[675716e]	504	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
[9f5ecf5]	505
[675716e]	506	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
[626dbc10]	507
	508	if ( tuplep ) {
	509	dump( translationUnit );
[3e96559]	510	return EXIT_SUCCESS;
	511	} // if
[141b786]	512
[675716e]	513	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
[a5f0529]	514
[675716e]	515	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
[53d3ab4b]	516	if ( genericsp ) {
	517	dump( translationUnit );
[3e96559]	518	return EXIT_SUCCESS;
	519	} // if
[b4f8808]	520
[675716e]	521	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
[53d3ab4b]	522
[fea7ca7]	523	if ( bboxp ) {
	524	dump( translationUnit );
[3e96559]	525	return EXIT_SUCCESS;
[926af74]	526	} // if
[675716e]	527	PASS( "Box", GenPoly::box( translationUnit ) );
[81419b5]	528
[aff7e86]	529	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
	530
	531	// Code has been lowered to C, now we can start generation.
	532
[8905f56]	533	if ( bcodegenp ) {
	534	dump( translationUnit );
[3e96559]	535	return EXIT_SUCCESS;
	536	} // if
[8905f56]	537
[13de47bc]	538	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
	539	output = new ofstream( argv[ optind ] );
	540	} // if
[0270824]	541
[7b15d7a]	542	CodeTools::fillLocations( translationUnit );
[62ce290]	543	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
[0270824]	544
[8e48fca4]	545	CodeGen::FixMain::fix( translationUnit, *output,
	546	(PreludeDirector + "/bootloader.c").c_str() );
[e6955b1]	547	if ( output != &cout ) {
[b87a5ed]	548	delete output;
	549	} // if
[77d601f]	550	} catch ( SemanticErrorException & e ) {
[b87a5ed]	551	if ( errorp ) {
[e6955b1]	552	cerr << "---AST at error:---" << endl;
	553	dump( translationUnit, cerr );
	554	cerr << endl << "---End of AST, begin error message:---\n" << endl;
[926af74]	555	} // if
[d55d7a6]	556	e.print();
[e6955b1]	557	if ( output != &cout ) {
[b87a5ed]	558	delete output;
	559	} // if
[3e96559]	560	return EXIT_FAILURE;
[77d601f]	561	} catch ( UnimplementedError & e ) {
[e6955b1]	562	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
	563	if ( output != &cout ) {
[b87a5ed]	564	delete output;
	565	} // if
[3e96559]	566	return EXIT_FAILURE;
[77d601f]	567	} catch ( CompilerError & e ) {
[e6955b1]	568	cerr << "Compiler Error: " << e.get_what() << endl;
[c850687]	569	cerr << "(please report bugs to [REDACTED])" << endl;
[e6955b1]	570	if ( output != &cout ) {
[b87a5ed]	571	delete output;
	572	} // if
[3e96559]	573	return EXIT_FAILURE;
[77d601f]	574	} catch ( std::bad_alloc & ) {
	575	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
	576	backtrace( 1 );
	577	abort();
[3e96559]	578	} catch ( ... ) {
[bffcd66]	579	exception_ptr eptr = current_exception();
[4990812]	580	try {
	581	if (eptr) {
[bffcd66]	582	rethrow_exception(eptr);
[3e96559]	583	} else {
[77d601f]	584	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
[3e96559]	585	} // if
[77d601f]	586	} catch( const exception & e ) {
	587	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
[3e96559]	588	} // try
	589	return EXIT_FAILURE;
	590	} // try
[b87a5ed]	591
[39786813]	592	deleteAll( translationUnit );
[1cb7fab2]	593	Stats::print();
[3e96559]	594	return EXIT_SUCCESS;
[d9a0e76]	595	} // main
[51b7345]	596
[0da3e2c]	597
[3e9de01]	598	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
[3e96559]	599
[62ce290]	600	enum { PreludeDir = 128 };
[3e96559]	601	static struct option long_opts[] = {
[1a69a90]	602	{ "colors", required_argument, nullptr, 'c' },
	603	{ "gdb", no_argument, nullptr, 'g' },
[3e96559]	604	{ "help", no_argument, nullptr, 'h' },
	605	{ "libcfa", no_argument, nullptr, 'l' },
[62ce290]	606	{ "linemarks", no_argument, nullptr, 'L' },
[3e96559]	607	{ "no-main", no_argument, 0, 'm' },
[62ce290]	608	{ "no-linemarks", no_argument, nullptr, 'N' },
	609	{ "no-prelude", no_argument, nullptr, 'n' },
[3e96559]	610	{ "prototypes", no_argument, nullptr, 'p' },
[7215000]	611	{ "deterministic-out", no_argument, nullptr, 'd' },
[a77257be]	612	{ "old-ast", no_argument, nullptr, 'O'},
	613	{ "new-ast", no_argument, nullptr, 'A'},
[62ce290]	614	{ "print", required_argument, nullptr, 'P' },
	615	{ "prelude-dir", required_argument, nullptr, PreludeDir },
	616	{ "statistics", required_argument, nullptr, 'S' },
[3e96559]	617	{ "tree", no_argument, nullptr, 't' },
	618	{ "", no_argument, nullptr, 0 }, // -w
	619	{ "", no_argument, nullptr, 0 }, // -W
	620	{ "", no_argument, nullptr, 0 }, // -D
	621	{ nullptr, 0, nullptr, 0 }
	622	}; // long_opts
	623
	624	static const char * description[] = {
[aa88cb9a]	625	"diagnostic color: never, always, auto", // -c
[3e9de01]	626	"wait for gdb to attach", // -g
[aa88cb9a]	627	"print translator help message", // -h
[3e9de01]	628	"generate libcfa.c", // -l
	629	"generate line marks", // -L
	630	"do not replace main", // -m
	631	"do not generate line marks", // -N
	632	"do not read prelude", // -n
[aa88cb9a]	633	"do not generate prelude prototypes => prelude not printed", // -p
[3e9de01]	634	"only print deterministic output", // -d
	635	"Use the old-ast", // -O
	636	"Use the new-ast", // -A
	637	"print", // -P
[62ce290]	638	"<directory> prelude directory for debug/nodebug", // no flag
[aa88cb9a]	639	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
[3e9de01]	640	"building cfa standard lib", // -t
	641	"", // -w
	642	"", // -W
	643	"", // -D
[3e96559]	644	}; // description
	645
[0c0f548]	646	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
[62ce290]	647
	648	static struct Printopts {
	649	const char * name;
	650	int & flag;
	651	int val;
	652	const char * descript;
	653	} printopts[] = {
[0e464f6]	654	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
	655	{ "asterr", errorp, true, "print AST on error" },
[62ce290]	656	{ "declstats", declstatsp, true, "code property statistics" },
	657	{ "parse", yydebug, true, "yacc (parsing) debug information" },
	658	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
	659	{ "rproto", resolvprotop, true, "resolver-proto instance" },
[0e464f6]	660	{ "rsteps", resolvep, true, "print resolver steps" },
	661	{ "tree", parsep, true, "print parse tree" },
	662	// code dumps
	663	{ "ast", astp, true, "print AST after parsing" },
[00da199]	664	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
[0e464f6]	665	{ "symevt", symtabp, true, "print AST after symbol table events" },
	666	{ "altexpr", expraltp, true, "print alternatives for expressions" },
	667	{ "astdecl", validp, true, "print AST after declaration validation pass" },
	668	{ "resolver", bresolvep, true, "print AST before resolver step" },
	669	{ "astexpr", exprp, true, "print AST after expression analysis" },
	670	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
	671	{ "tuple", tuplep, true, "print AST after tuple expansion" },
	672	{ "astgen", genericsp, true, "print AST after instantiate generics" },
	673	{ "box", bboxp, true, "print AST before box step" },
	674	{ "codegen", bcodegenp, true, "print AST before code generation" },
[62ce290]	675	};
	676	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
	677
[77d601f]	678	static void usage( char * argv[] ) {
[e0bd0f9]	679	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
[3e96559]	680	int i = 0, j = 1; // j skips starting colon
	681	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
	682	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
[62ce290]	683	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
	684	cout << " -" << optstring[j] << ",";
	685	} else { // no flag
	686	j -= 1; // compensate
	687	cout << " ";
	688	} // if
	689	cout << " --" << left << setw(12) << long_opts[i].name << " ";
	690	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
	691	cout << "one of: " << endl;
	692	for ( int i = 0; i < printoptsSize; i += 1 ) {
	693	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
	694	} // for
	695	} else {
	696	cout << description[i] << endl;
	697	} // if
[3e96559]	698	} // if
[62ce290]	699	if ( optstring[j + 1] == ':' ) j += 1;
[3e96559]	700	} // for
	701	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
	702	exit( EXIT_FAILURE );
	703	} // usage
	704
[e0bd0f9]	705	static void parse_cmdline( int argc, char * argv[] ) {
[0da3e2c]	706	opterr = 0; // (global) prevent getopt from printing error messages
	707
[c5e5109]	708	bool Wsuppress = false, Werror = false;
[0da3e2c]	709	int c;
[3e96559]	710	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
[0da3e2c]	711	switch ( c ) {
[1a69a90]	712	case 'c': // diagnostic colors
	713	if ( strcmp( optarg, "always" ) == 0 ) {
	714	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
	715	} else if ( strcmp( optarg, "never" ) == 0 ) {
	716	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
	717	} else if ( strcmp( optarg, "auto" ) == 0 ) {
	718	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
	719	} // if
	720	break;
[3e96559]	721	case 'h': // help message
	722	usage( argv ); // no return
[53d3ab4b]	723	break;
[3e96559]	724	case 'l': // generate libcfa.c
[0da3e2c]	725	libcfap = true;
	726	break;
[62ce290]	727	case 'L': // generate line marks
[6de43b6]	728	linemarks = true;
[c850687]	729	break;
[3e96559]	730	case 'm': // do not replace main
	731	nomainp = true;
[0da3e2c]	732	break;
[62ce290]	733	case 'N': // do not generate line marks
[6de43b6]	734	linemarks = false;
[c59bde6]	735	break;
[62ce290]	736	case 'n': // do not read prelude
[3e96559]	737	nopreludep = true;
[0da3e2c]	738	break;
[62ce290]	739	case 'p': // generate prototypes for prelude functions
	740	genproto = true;
[0da3e2c]	741	break;
[7215000]	742	case 'd': // don't print non-deterministic output
[a77257be]	743	deterministic_output = true;
	744	break;
	745	case 'O': // don't print non-deterministic output
	746	useNewAST = false;
	747	break;
	748	case 'A': // don't print non-deterministic output
	749	useNewAST = true;
[7215000]	750	break;
[62ce290]	751	case 'P': // print options
	752	for ( int i = 0;; i += 1 ) {
	753	if ( i == printoptsSize ) {
	754	cout << "Unknown --print option " << optarg << endl;
	755	goto Default;
	756	} // if
	757	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
	758	printopts[i].flag = printopts[i].val;
	759	break;
	760	} // if
	761	} // for
[0da3e2c]	762	break;
[62ce290]	763	case PreludeDir: // prelude directory for debug/nodebug, hidden
	764	PreludeDirector = optarg;
[3b3491b]	765	break;
[3e96559]	766	case 'S': // enable profiling information, argument comma separated list of names
	767	Stats::parse_params( optarg );
[ebcc940]	768	break;
[dee1f89]	769	case 't': // building cfa stdlib
[0da3e2c]	770	treep = true;
	771	break;
[dee1f89]	772	case 'g': // wait for gdb
	773	waiting_for_gdb = true;
	774	break;
[3e96559]	775	case 'w': // suppress all warnings, hidden
[c5e5109]	776	Wsuppress = true;
[44bca7f]	777	break;
[3e96559]	778	case 'W': // coordinate gcc -W with CFA, hidden
[44bca7f]	779	if ( strcmp( optarg, "all" ) == 0 ) {
[68e9ace]	780	SemanticWarning_EnableAll();
[44bca7f]	781	} else if ( strcmp( optarg, "error" ) == 0 ) {
	782	Werror = true;
	783	} else {
	784	char * warning = optarg;
	785	Severity s;
	786	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
	787	warning += 3;
	788	s = Severity::Suppress;
	789	} else {
	790	s = Severity::Warn;
	791	} // if
[68e9ace]	792	SemanticWarning_Set( warning, s );
[44bca7f]	793	} // if
	794	break;
[3e96559]	795	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
[0da3e2c]	796	break;
[3e96559]	797	case '?': // unknown option
	798	if ( optopt ) { // short option ?
	799	cout << "Unknown option -" << (char)optopt << endl;
	800	} else {
	801	cout << "Unknown option " << argv[optind - 1] << endl;
	802	} // if
	803	goto Default;
	804	case ':': // missing option
[ae47a23]	805	if ( optopt ) { // short option ?
[3e96559]	806	cout << "Missing option for -" << (char)optopt << endl;
[ae47a23]	807	} else {
[3e96559]	808	cout << "Missing option for " << argv[optind - 1] << endl;
[ae47a23]	809	} // if
[3e96559]	810	goto Default;
	811	Default:
	812	default:
	813	usage( argv ); // no return
[0da3e2c]	814	} // switch
	815	} // while
[44bca7f]	816
	817	if ( Werror ) {
[68e9ace]	818	SemanticWarning_WarningAsError();
[44bca7f]	819	} // if
[c5e5109]	820	if ( Wsuppress ) {
	821	SemanticWarning_SuppressAll();
	822	} // if
[44bca7f]	823	// for ( const auto w : WarningFormats ) {
	824	// cout << w.name << ' ' << (int)w.severity << endl;
	825	// } // for
[0da3e2c]	826	} // parse_cmdline
	827
[8b7ee09]	828	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
[0da3e2c]	829	extern int yyparse( void );
[cbaee0d]	830	extern FILE * yyin;
[0da3e2c]	831	extern int yylineno;
	832
[8b7ee09]	833	::linkage = linkage; // set globals
[0da3e2c]	834	yyin = input;
	835	yylineno = 1;
	836	int parseStatus = yyparse();
[81419b5]	837
	838	fclose( input );
[0da3e2c]	839	if ( shouldExit \|\| parseStatus != 0 ) {
	840	exit( parseStatus );
[81419b5]	841	} // if
[0da3e2c]	842	} // parse
[81419b5]	843
[1ab4ce2]	844	static bool notPrelude( Declaration * decl ) {
	845	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
[0da3e2c]	846	} // notPrelude
[1ab4ce2]	847
[e6955b1]	848	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
	849	list< Declaration * > decls;
[926af74]	850
[62ce290]	851	if ( genproto ) {
[e6955b1]	852	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
[1ab4ce2]	853	} else {
	854	decls = translationUnit;
[926af74]	855	} // if
[1ab4ce2]	856
[e39241b]	857	// depending on commandline options, either generate code or dump the AST
	858	if ( codegenp ) {
[62ce290]	859	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
[e39241b]	860	} else {
	861	printAll( decls, out );
[3e96559]	862	} // if
[7f5566b]	863	deleteAll( translationUnit );
[0da3e2c]	864	} // dump
[1ab4ce2]	865
[e499381]	866	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
	867	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
	868	dump( translationUnit, out );
	869	}
	870
[51b7345]	871	// Local Variables: //
[b87a5ed]	872	// tab-width: 4 //
	873	// mode: c++ //
	874	// compile-command: "make install" //
[51b7345]	875	// End: //

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