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source: src/main.cc @ 3e96559

ADTarm-ehast-experimentalcleanup-dtorsenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum

Last change on this file since 3e96559 was 3e96559, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago
add --help option for cfa-cpp to show options, and restructure the option handling code
Property mode set to `100644`
File size: 23.8 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
[c59bde6]	11	// Last Modified By : Peter A. Buhr
[3e96559]	12	// Last Modified On : Thu May 2 11:09:37 2019
	13	// Update Count : 523
[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...
	19	#include <signal.h> // for signal, SIGABRT, SIGSEGV
[08fc48f]	20	#include <cassert> // for assertf
[bf2438c]	21	#include <cstdio> // for fopen, FILE, fclose, stdin
	22	#include <cstdlib> // for exit, free, abort, EXIT_F...
	23	#include <cstring> // for index
[be9288a]	24	#include <fstream> // for ofstream
[bf2438c]	25	#include <iostream> // for operator<<, basic_ostream
	26	#include <iterator> // for back_inserter
	27	#include <list> // for list
[08fc48f]	28	#include <string> // for char_traits, operator<<
[e6955b1]	29
[7f38b67a]	30	#include "CompilationState.h"
[bf2438c]	31	#include "../config.h" // for CFA_LIBDIR
	32	#include "CodeGen/FixMain.h" // for FixMain
	33	#include "CodeGen/FixNames.h" // for fixNames
	34	#include "CodeGen/Generate.h" // for generate
	35	#include "CodeTools/DeclStats.h" // for printDeclStats
[3b3491b]	36	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
[bf2438c]	37	#include "CodeTools/TrackLoc.h" // for fillLocations
	38	#include "Common/CompilerError.h" // for CompilerError
[7abee38]	39	#include "Common/Stats.h"
[cbbd5b48]	40	#include "Common/PassVisitor.h"
[bf2438c]	41	#include "Common/SemanticError.h" // for SemanticError
	42	#include "Common/UnimplementedError.h" // for UnimplementedError
	43	#include "Common/utility.h" // for deleteAll, filter, printAll
[9f5ecf5]	44	#include "Concurrency/Waitfor.h" // for generateWaitfor
[bf2438c]	45	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
	46	#include "ControlStruct/Mutate.h" // for mutate
	47	#include "GenPoly/Box.h" // for box
	48	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
	49	#include "GenPoly/Lvalue.h" // for convertLvalue
	50	#include "GenPoly/Specialize.h" // for convertSpecializations
	51	#include "InitTweak/FixInit.h" // for fix
	52	#include "InitTweak/GenInit.h" // for genInit
	53	#include "MakeLibCfa.h" // for makeLibCfa
	54	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
	55	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
	56	#include "Parser/TypedefTable.h" // for TypedefTable
	57	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
	58	#include "ResolvExpr/Resolver.h" // for resolve
	59	#include "SymTab/Validate.h" // for validate
	60	#include "SynTree/Declaration.h" // for Declaration
	61	#include "SynTree/Visitor.h" // for acceptAll
	62	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
[a5f0529]	63	#include "Virtual/ExpandCasts.h" // for expandCasts
[51b7345]	64
	65	using namespace std;
	66
[3e96559]	67	static void NewPass( const char * const name ) {
	68	Stats::Heap::newPass( name );
[1cb7fab2]	69	using namespace Stats::Counters;
[b8665e3]	70	{
[3e96559]	71	static auto group = build<CounterGroup>( "Pass Visitor" );
	72	auto pass = build<CounterGroup>( name, group );
[b8665e3]	73	pass_visitor_stats.depth = 0;
[3e96559]	74	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
	75	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
[b8665e3]	76	}
	77	{
[3e96559]	78	static auto group = build<CounterGroup>( "Syntax Node" );
	79	auto pass = build<CounterGroup>( name, group );
	80	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
[b8665e3]	81	}
[675716e]	82	}
	83
[3e96559]	84	#define PASS( name, pass ) \
[ecaeac6e]	85	if ( errorp ) { cerr << name << endl; } \
[675716e]	86	NewPass(name); \
[4f97937]	87	Stats::Time::StartBlock(name); \
	88	pass; \
	89	Stats::Time::StopBlock();
[0da3e2c]	90
[8b7ee09]	91	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
[0da3e2c]	92	TypedefTable typedefTable;
[cbaee0d]	93	DeclarationNode * parseTree = nullptr; // program parse tree
[81419b5]	94
[3e96559]	95	static std::string PreludeDirector = "";
[4dcaed2]	96
[926af74]	97	static void parse_cmdline( int argc, char argv[], const char & filename );
[8b7ee09]	98	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
[e6955b1]	99	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
	100
[0afffee]	101	static void backtrace( int start ) { // skip first N stack frames
[e6955b1]	102	enum { Frames = 50 };
	103	void * array[Frames];
[0afffee]	104	int size = ::backtrace( array, Frames );
	105	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
	106
	107	*index( messages[0], '(' ) = '\0'; // find executable name
	108	cerr << "Stack back trace for: " << messages[0] << endl;
[e6955b1]	109
[b542bfb]	110	// skip last 2 stack frames after main
	111	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
[e6955b1]	112	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
	113	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
[0afffee]	114	if ( *p == '(' ) {
[46f6134]	115	mangled_name = p;
[0afffee]	116	} else if ( *p == '+' ) {
[e6955b1]	117	offset_begin = p;
[0afffee]	118	} else if ( *p == ')' ) {
[e6955b1]	119	offset_end = p;
	120	break;
	121	} // if
	122	} // for
	123
	124	// if line contains symbol, attempt to demangle
[b542bfb]	125	int frameNo = i - start;
[e6955b1]	126	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
[0afffee]	127	*mangled_name++ = '\0'; // delimit strings
[e6955b1]	128	*offset_begin++ = '\0';
	129	*offset_end++ = '\0';
	130
[0afffee]	131	int status;
[e6955b1]	132	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
[0afffee]	133	// bug in __cxa_demangle for single-character lower-case non-mangled names
[e6955b1]	134	if ( status == 0 ) { // demangling successful ?
[b542bfb]	135	cerr << "(" << frameNo << ") " << messages[i] << " : "
[e6955b1]	136	<< real_name << "+" << offset_begin << offset_end << endl;
	137	} else { // otherwise, output mangled name
[b542bfb]	138	cerr << "(" << frameNo << ") " << messages[i] << " : "
[0afffee]	139	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
[e6955b1]	140	} // if
[0afffee]	141
[e6955b1]	142	free( real_name );
	143	} else { // otherwise, print the whole line
[b542bfb]	144	cerr << "(" << frameNo << ") " << messages[i] << endl;
[e6955b1]	145	} // if
	146	} // for
[b542bfb]	147
[e6955b1]	148	free( messages );
[b542bfb]	149	} // backtrace
	150
[3e96559]	151	static void sigSegvBusHandler( int sig_num ) {
[b542bfb]	152	cerr << "CFA runtime error program cfa-cpp terminated with "
	153	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
[0afffee]	154	<< "." << endl;
[b542bfb]	155	backtrace( 2 ); // skip first 2 stack frames
[af84a35]	156	//_exit( EXIT_FAILURE );
[3e96559]	157	abort(); // cause core dump for debugging
[e6955b1]	158	} // sigSegvBusHandler
[0da3e2c]	159
[3e96559]	160	static void sigAbortHandler( __attribute__((unused)) int sig_num ) {
[b542bfb]	161	backtrace( 6 ); // skip first 6 stack frames
	162	signal( SIGABRT, SIG_DFL); // reset default signal handler
[675716e]	163	raise( SIGABRT ); // reraise SIGABRT
[b542bfb]	164	} // sigAbortHandler
	165
	166
[cbaee0d]	167	int main( int argc, char * argv[] ) {
[3b8e52c]	168	FILE * input; // use FILE rather than istream because yyin is FILE
[d08beee]	169	ostream * output = & cout;
	170	const char * filename = nullptr;
[e6955b1]	171	list< Declaration * > translationUnit;
	172
	173	signal( SIGSEGV, sigSegvBusHandler );
	174	signal( SIGBUS, sigSegvBusHandler );
[b542bfb]	175	signal( SIGABRT, sigAbortHandler );
[b87a5ed]	176
[44bca7f]	177	// std::cout << "main" << std::endl;
	178	// for ( int i = 0; i < argc; i += 1 ) {
	179	// std::cout << '\t' << argv[i] << std::endl;
	180	// } // for
	181
[0da3e2c]	182	parse_cmdline( argc, argv, filename ); // process command-line arguments
[13de47bc]	183	CodeGen::FixMain::setReplaceMain( !nomainp );
[b87a5ed]	184
	185	try {
[81419b5]	186	// choose to read the program from a file or stdin
[3b8e52c]	187	if ( optind < argc ) { // any commands after the flags ? => input file name
[b87a5ed]	188	input = fopen( argv[ optind ], "r" );
[3b8e52c]	189	assertf( input, "cannot open %s\n", argv[ optind ] );
[d029162]	190	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
[926af74]	191	if ( filename == nullptr ) filename = argv[ optind ];
[37024fd]	192	// prelude filename comes in differently
[e523b07]	193	if ( libcfap ) filename = "prelude.cfa";
[b87a5ed]	194	optind += 1;
[3b8e52c]	195	} else { // no input file name
[b87a5ed]	196	input = stdin;
[2a7e29b]	197	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
	198	// a fake name along
[926af74]	199	if ( filename == nullptr ) filename = "stdin";
[b87a5ed]	200	} // if
	201
[79eaeb7]	202	Stats::Time::StartGlobal();
[3c0d4cd]	203	NewPass("Parse");
	204	Stats::Time::StartBlock("Parse");
[675716e]	205
[159c62e]	206	// read in the builtins, extras, and the prelude
[de62360d]	207	if ( ! nopreludep ) { // include gcc builtins
[faf8857]	208	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
[807ce84]	209
[37fe352]	210	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
[4dcaed2]	211
[807ce84]	212	// Read to gcc builtins, if not generating the cfa library
[37fe352]	213	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
[6ce3ae9]	214	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
	215	parse( gcc_builtins, LinkageSpec::Compiler );
[81419b5]	216
[159c62e]	217	// read the extra prelude in, if not generating the cfa library
[37fe352]	218	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
[3b8e52c]	219	assertf( extras, "cannot open extras.cf\n" );
[f0994a1]	220	parse( extras, LinkageSpec::BuiltinC );
[159c62e]	221
[81419b5]	222	if ( ! libcfap ) {
[faf8857]	223	// read the prelude in, if not generating the cfa library
[e523b07]	224	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
	225	assertf( prelude, "cannot open prelude.cfa\n" );
[35304009]	226	parse( prelude, LinkageSpec::Intrinsic );
[fa4805f]	227
	228	// Read to cfa builtins, if not generating the cfa library
[37fe352]	229	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
[fa4805f]	230	assertf( builtins, "cannot open builtins.cf\n" );
[54d714e]	231	parse( builtins, LinkageSpec::BuiltinCFA );
[b87a5ed]	232	} // if
	233	} // if
[81419b5]	234
[926af74]	235	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
[71f4e4f]	236
[b87a5ed]	237	if ( parsep ) {
[e6955b1]	238	parseTree->printList( cout );
[0da3e2c]	239	delete parseTree;
[3e96559]	240	return EXIT_SUCCESS;
[b87a5ed]	241	} // if
	242
[0da3e2c]	243	buildList( parseTree, translationUnit );
	244	delete parseTree;
[cbaee0d]	245	parseTree = nullptr;
[b87a5ed]	246
	247	if ( astp ) {
[1ab4ce2]	248	dump( translationUnit );
[3e96559]	249	return EXIT_SUCCESS;
[b87a5ed]	250	} // if
	251
[036dd5f]	252	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
	253	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
	254	// works okay for now.
	255	CodeTools::fillLocations( translationUnit );
[3c0d4cd]	256	Stats::Time::StopBlock();
[036dd5f]	257
[839ccbb]	258	// add the assignment statement after the initialization of a type parameter
[675716e]	259	PASS( "Validate", SymTab::validate( translationUnit, symtabp ) );
[81419b5]	260	if ( symtabp ) {
[46f6134]	261	deleteAll( translationUnit );
[3e96559]	262	return EXIT_SUCCESS;
[b87a5ed]	263	} // if
	264
[81419b5]	265	if ( expraltp ) {
[bff09c8]	266	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
[81419b5]	267	acceptAll( translationUnit, printer );
[3e96559]	268	return EXIT_SUCCESS;
[b87a5ed]	269	} // if
	270
	271	if ( validp ) {
[1ab4ce2]	272	dump( translationUnit );
[3e96559]	273	return EXIT_SUCCESS;
[b87a5ed]	274	} // if
	275
[675716e]	276	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
	277	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
	278	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
	279	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
[81419b5]	280	if ( libcfap ) {
	281	// generate the bodies of cfa library functions
	282	LibCfa::makeLibCfa( translationUnit );
[b87a5ed]	283	} // if
	284
[fa2de95]	285	if ( declstatsp ) {
	286	CodeTools::printDeclStats( translationUnit );
	287	deleteAll( translationUnit );
[3e96559]	288	return EXIT_SUCCESS;
	289	} // if
[fa2de95]	290
[de62360d]	291	if ( bresolvep ) {
[1ab4ce2]	292	dump( translationUnit );
[3e96559]	293	return EXIT_SUCCESS;
[de62360d]	294	} // if
	295
[76b378d]	296	CodeTools::fillLocations( translationUnit );
	297
[3b3491b]	298	if ( resolvprotop ) {
	299	CodeTools::dumpAsResolvProto( translationUnit );
[3e96559]	300	return EXIT_SUCCESS;
	301	} // if
[3b3491b]	302
[675716e]	303	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
[81419b5]	304	if ( exprp ) {
[1ab4ce2]	305	dump( translationUnit );
[3e96559]	306	return EXIT_SUCCESS;
[926af74]	307	} // if
[81419b5]	308
[71f4e4f]	309	// fix ObjectDecl - replaces ConstructorInit nodes
[675716e]	310	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
[ca1c11f]	311	if ( ctorinitp ) {
	312	dump ( translationUnit );
[3e96559]	313	return EXIT_SUCCESS;
[926af74]	314	} // if
[71f4e4f]	315
[675716e]	316	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
[626dbc10]	317
[675716e]	318	PASS( "Translate EHM" , ControlStruct::translateEHM( translationUnit ) );
[6edd210]	319
[675716e]	320	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
[307a732]	321
[675716e]	322	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
[9f5ecf5]	323
[675716e]	324	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
[626dbc10]	325
	326	if ( tuplep ) {
	327	dump( translationUnit );
[3e96559]	328	return EXIT_SUCCESS;
	329	} // if
[141b786]	330
[675716e]	331	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
[a5f0529]	332
[675716e]	333	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
[53d3ab4b]	334	if ( genericsp ) {
	335	dump( translationUnit );
[3e96559]	336	return EXIT_SUCCESS;
	337	} // if
[675716e]	338	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
[fea7ca7]	339
[53d3ab4b]	340
[fea7ca7]	341	if ( bboxp ) {
	342	dump( translationUnit );
[3e96559]	343	return EXIT_SUCCESS;
[926af74]	344	} // if
[675716e]	345	PASS( "Box", GenPoly::box( translationUnit ) );
[81419b5]	346
[8905f56]	347	if ( bcodegenp ) {
	348	dump( translationUnit );
[3e96559]	349	return EXIT_SUCCESS;
	350	} // if
[8905f56]	351
[13de47bc]	352	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
	353	output = new ofstream( argv[ optind ] );
	354	} // if
[0270824]	355
[7b15d7a]	356	CodeTools::fillLocations( translationUnit );
[675716e]	357	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, linemarks ) );
[0270824]	358
[37fe352]	359	CodeGen::FixMain::fix( *output, (PreludeDirector + "/bootloader.c").c_str() );
[e6955b1]	360	if ( output != &cout ) {
[b87a5ed]	361	delete output;
	362	} // if
[a16764a6]	363	} catch ( SemanticErrorException &e ) {
[b87a5ed]	364	if ( errorp ) {
[e6955b1]	365	cerr << "---AST at error:---" << endl;
	366	dump( translationUnit, cerr );
	367	cerr << endl << "---End of AST, begin error message:---\n" << endl;
[926af74]	368	} // if
[d55d7a6]	369	e.print();
[e6955b1]	370	if ( output != &cout ) {
[b87a5ed]	371	delete output;
	372	} // if
[3e96559]	373	return EXIT_FAILURE;
[b87a5ed]	374	} catch ( UnimplementedError &e ) {
[e6955b1]	375	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
	376	if ( output != &cout ) {
[b87a5ed]	377	delete output;
	378	} // if
[3e96559]	379	return EXIT_FAILURE;
[b87a5ed]	380	} catch ( CompilerError &e ) {
[e6955b1]	381	cerr << "Compiler Error: " << e.get_what() << endl;
[c850687]	382	cerr << "(please report bugs to [REDACTED])" << endl;
[e6955b1]	383	if ( output != &cout ) {
[b87a5ed]	384	delete output;
	385	} // if
[3e96559]	386	return EXIT_FAILURE;
	387	} catch ( ... ) {
[4990812]	388	std::exception_ptr eptr = std::current_exception();
	389	try {
	390	if (eptr) {
	391	std::rethrow_exception(eptr);
[3e96559]	392	} else {
	393	std::cerr << "Exception Uncaught and Unknown" << std::endl;
	394	} // if
[4990812]	395	} catch(const std::exception& e) {
[0689cd9]	396	std::cerr << "Uncaught Exception \"" << e.what() << "\"\n";
[3e96559]	397	} // try
	398	return EXIT_FAILURE;
	399	} // try
[b87a5ed]	400
[39786813]	401	deleteAll( translationUnit );
[1cb7fab2]	402	Stats::print();
[3e96559]	403	return EXIT_SUCCESS;
[d9a0e76]	404	} // main
[51b7345]	405
[0da3e2c]	406
[3e96559]	407	static const char optstring[] = ":abBcCdeEGghlLmNnpP:qrRS:stTvwW:yzZD:F:";
	408
	409	static struct option long_opts[] = {
	410	{ "ast", no_argument, nullptr, 'a' },
	411	{ "before-resolver", no_argument, nullptr, 'b' },
	412	{ "box", no_argument, nullptr, 'B' },
	413	{ "ctorinitfix", no_argument, nullptr, 'c' },
	414	{ "code", no_argument, nullptr, 'C' },
	415	{ "decl-stmts", no_argument, nullptr, 'd' },
	416	{ "expr", no_argument, nullptr, 'e' },
	417	{ "expralt", no_argument, nullptr, 'E' },
	418	{ "generics", no_argument, nullptr, 'G' },
	419	{ "grammar", no_argument, nullptr, 'g' },
	420	{ "help", no_argument, nullptr, 'h' },
	421	{ "libcfa", no_argument, nullptr, 'l' },
	422	{ "line-marks", no_argument, nullptr, 'L' },
	423	{ "no-main", no_argument, 0, 'm' },
	424	{ "no-line-marks", no_argument, nullptr, 'N' },
	425	{ "no-preamble", no_argument, nullptr, 'n' },
	426	{ "prototypes", no_argument, nullptr, 'p' },
	427	{ "prelude-dir <directory>", required_argument, nullptr, 'P' },
	428	{ "parse-tree", no_argument, nullptr, 'q' },
	429	{ "resolver", no_argument, nullptr, 'r' },
	430	{ "resolver-proto", no_argument, nullptr, 'R' },
	431	{ "statistics <option-list>", required_argument, nullptr, 'S' },
	432	{ "symbol", no_argument, nullptr, 's' },
	433	{ "tree", no_argument, nullptr, 't' },
	434	{ "tuple", no_argument, nullptr, 'T' },
	435	{ "validate", no_argument, nullptr, 'v' },
	436	{ "", no_argument, nullptr, 0 }, // -w
	437	{ "", no_argument, nullptr, 0 }, // -W
	438	{ "dump-ast-on-error", no_argument, nullptr, 'y' },
	439	{ "dump-ast-code", no_argument, nullptr, 'z' },
	440	{ "prettyprint-codegen", no_argument, nullptr, 'Z' },
	441	{ "", no_argument, nullptr, 0 }, // -D
	442	{ "", no_argument, nullptr, 0 }, // -F
	443	{ nullptr, 0, nullptr, 0 }
	444	}; // long_opts
	445
	446	static const char * description[] = {
	447	"dump AST", // -a
	448	"print before resolver step", // -b
	449	"print before box step", // -B
	450	"print after ctor/dtor are replaced", // -c
	451	"print before code generation", // -C
	452	"print declaration statements", // -d
	453	"dump AST after expression analysis", // -e
	454	"print alternatives for expressions", // -E
	455	"dump AST after instantiate generics", // -G
	456	"print bison (parsing) debugging information", // -g
	457	"help message", // -h
	458	"generate libcfa.c", // -l
	459	"print line marks", // -L
	460	"do not replace main", // -m
	461	"suppress line marks", // -N
	462	"do not read preamble", // -n
	463	"generate prototypes for preamble functions", // -p
	464	"prelude directory for debug/nodebug", // -P
	465	"dump parse tree", // -q
	466	"print resolver steps", // -r
	467	"dump resolver-proto instance", // -R
	468	"enable profiling information: counters,heap,time", // -S
	469	"print symbol table events", // -s
	470	"build in tree", // -t
	471	"print after tuple expansion", // -T
	472	"dump AST after declaration validation pass", // -v
	473	"", // -w
	474	"", // -W
	475	"dump AST on error", // -y
	476	"dump as codegen rather than AST", // -z
	477	"prettyprint during codegen", // -Z
	478	"", // -D
	479	"", // -F
	480	}; // description
	481
	482	static void usage( char *argv[] ) {
	483	cout << "Usage: " << argv[0] << " options are:" << endl;
	484	int i = 0, j = 1; // j skips starting colon
	485	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
	486	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
	487	cout << " -" << optstring[j] << ", --" << long_opts[i].name << " " << description[i] << endl;
	488	} // if
	489	if ( optstring[j+1] == ':' ) j += 1;
	490	} // for
	491	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
	492	exit( EXIT_FAILURE );
	493	} // usage
	494
	495	static void parse_cmdline( int argc, char * argv[], const char *& filename ) {
[0da3e2c]	496	opterr = 0; // (global) prevent getopt from printing error messages
	497
[c5e5109]	498	bool Wsuppress = false, Werror = false;
[0da3e2c]	499	int c;
[3e96559]	500	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
[0da3e2c]	501	switch ( c ) {
[3e96559]	502	case 'a': // dump AST
[0da3e2c]	503	astp = true;
	504	break;
[3e96559]	505	case 'b': // print before resolver steps
[0da3e2c]	506	bresolvep = true;
	507	break;
[3e96559]	508	case 'B': // print before box steps
[0da3e2c]	509	bboxp = true;
	510	break;
[3e96559]	511	case 'c': // print after ctor/dtor are replaced
[0da3e2c]	512	ctorinitp = true;
	513	break;
[3e96559]	514	case 'C': // print before code generation
[8905f56]	515	bcodegenp = true;
	516	break;
[3e96559]	517	case 'd': // print declaration statements
	518	declstatsp = true;
[41a7137]	519	break;
[3e96559]	520	case 'e': // dump AST after expression analysis
[0da3e2c]	521	exprp = true;
	522	break;
[3e96559]	523	case 'E': // print alternatives for expressions
[0da3e2c]	524	expraltp = true;
	525	break;
[3e96559]	526	case 'G': // dump AST after instantiate generics
	527	genericsp = true;
	528	break;
	529	case 'g': // print bison (parsing) debugging information
[926af74]	530	yydebug = true;
[0da3e2c]	531	break;
[3e96559]	532	case 'h': // help message
	533	usage( argv ); // no return
[53d3ab4b]	534	break;
[3e96559]	535	case 'l': // generate libcfa.c
[0da3e2c]	536	libcfap = true;
	537	break;
[3e96559]	538	case 'L': // print line marks
[6de43b6]	539	linemarks = true;
[c850687]	540	break;
[3e96559]	541	case 'm': // do not replace main
	542	nomainp = true;
[0da3e2c]	543	break;
[3e96559]	544	case 'N': // suppress line marks
[6de43b6]	545	linemarks = false;
[c59bde6]	546	break;
[3e96559]	547	case 'n': // do not read preamble
	548	nopreludep = true;
[0da3e2c]	549	break;
[3e96559]	550	case 'p': // generate prototypes for preamble functions
	551	noprotop = true;
[4dcaed2]	552	break;
[3e96559]	553	case 'P': // prelude directory for debug/nodebug, hidden
	554	PreludeDirector = optarg;
[3fe34ae]	555	break;
[3e96559]	556	case 'q': // dump parse tree
[0da3e2c]	557	parsep = true;
	558	break;
[3e96559]	559	case 'r': // print resolver steps
[0da3e2c]	560	resolvep = true;
	561	break;
[3e96559]	562	case 'R': // dump resolver-proto instance
[3b3491b]	563	resolvprotop = true;
	564	break;
[3e96559]	565	case 'S': // enable profiling information, argument comma separated list of names
	566	Stats::parse_params( optarg );
[ebcc940]	567	break;
[3e96559]	568	case 's': // print symbol table events
[0da3e2c]	569	symtabp = true;
	570	break;
[3e96559]	571	case 't': // build in tree
[0da3e2c]	572	treep = true;
	573	break;
[3e96559]	574	case 'T': // print after tuple expansion
[626dbc10]	575	tuplep = true;
	576	break;
[3e96559]	577	case 'v': // dump AST after declaration validation pass
[0da3e2c]	578	validp = true;
	579	break;
[3e96559]	580	case 'w': // suppress all warnings, hidden
[c5e5109]	581	Wsuppress = true;
[44bca7f]	582	break;
[3e96559]	583	case 'W': // coordinate gcc -W with CFA, hidden
[44bca7f]	584	if ( strcmp( optarg, "all" ) == 0 ) {
[68e9ace]	585	SemanticWarning_EnableAll();
[44bca7f]	586	} else if ( strcmp( optarg, "error" ) == 0 ) {
	587	Werror = true;
	588	} else {
	589	char * warning = optarg;
	590	Severity s;
	591	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
	592	warning += 3;
	593	s = Severity::Suppress;
	594	} else {
	595	s = Severity::Warn;
	596	} // if
[68e9ace]	597	SemanticWarning_Set( warning, s );
[44bca7f]	598	} // if
	599	break;
[3e96559]	600	case 'y': // dump AST on error
[0da3e2c]	601	errorp = true;
	602	break;
[3e96559]	603	case 'z': // dump as codegen rather than AST
[0da3e2c]	604	codegenp = true;
[e39241b]	605	break;
[3e96559]	606	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
[35b1bf4]	607	prettycodegenp = true;
[0da3e2c]	608	break;
[3e96559]	609	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
[0da3e2c]	610	break;
[3e96559]	611	case 'F': // source file-name without suffix, hidden
[0da3e2c]	612	filename = optarg;
	613	break;
[3e96559]	614	case '?': // unknown option
	615	if ( optopt ) { // short option ?
	616	cout << "Unknown option -" << (char)optopt << endl;
	617	} else {
	618	cout << "Unknown option " << argv[optind - 1] << endl;
	619	} // if
	620	goto Default;
	621	case ':': // missing option
[ae47a23]	622	if ( optopt ) { // short option ?
[3e96559]	623	cout << "Missing option for -" << (char)optopt << endl;
[ae47a23]	624	} else {
[3e96559]	625	cout << "Missing option for " << argv[optind - 1] << endl;
[ae47a23]	626	} // if
[3e96559]	627	goto Default;
	628	Default:
	629	default:
	630	usage( argv ); // no return
[0da3e2c]	631	} // switch
	632	} // while
[44bca7f]	633
	634	if ( Werror ) {
[68e9ace]	635	SemanticWarning_WarningAsError();
[44bca7f]	636	} // if
[c5e5109]	637	if ( Wsuppress ) {
	638	SemanticWarning_SuppressAll();
	639	} // if
[44bca7f]	640	// for ( const auto w : WarningFormats ) {
	641	// cout << w.name << ' ' << (int)w.severity << endl;
	642	// } // for
[0da3e2c]	643	} // parse_cmdline
	644
[8b7ee09]	645	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
[0da3e2c]	646	extern int yyparse( void );
[cbaee0d]	647	extern FILE * yyin;
[0da3e2c]	648	extern int yylineno;
	649
[8b7ee09]	650	::linkage = linkage; // set globals
[0da3e2c]	651	yyin = input;
	652	yylineno = 1;
	653	int parseStatus = yyparse();
[81419b5]	654
	655	fclose( input );
[0da3e2c]	656	if ( shouldExit \|\| parseStatus != 0 ) {
	657	exit( parseStatus );
[81419b5]	658	} // if
[0da3e2c]	659	} // parse
[81419b5]	660
[1ab4ce2]	661	static bool notPrelude( Declaration * decl ) {
	662	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
[0da3e2c]	663	} // notPrelude
[1ab4ce2]	664
[e6955b1]	665	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
	666	list< Declaration * > decls;
[926af74]	667
[1ab4ce2]	668	if ( noprotop ) {
[e6955b1]	669	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
[1ab4ce2]	670	} else {
	671	decls = translationUnit;
[926af74]	672	} // if
[1ab4ce2]	673
[e39241b]	674	// depending on commandline options, either generate code or dump the AST
	675	if ( codegenp ) {
	676	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
	677	} else {
	678	printAll( decls, out );
[3e96559]	679	} // if
[7f5566b]	680	deleteAll( translationUnit );
[0da3e2c]	681	} // dump
[1ab4ce2]	682
[51b7345]	683	// Local Variables: //
[b87a5ed]	684	// tab-width: 4 //
	685	// mode: c++ //
	686	// compile-command: "make install" //
[51b7345]	687	// End: //

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