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source: src/main.cc @ 5f3ba11

ADTast-experimentalenumforall-pointer-decaypthread-emulationqualifiedEnum

Last change on this file since 5f3ba11 was 5f3ba11, checked in by Fangren Yu <f37yu@…>, 3 years ago
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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	//
7	// main.cc --
8	//
9	// Author : Peter Buhr and Rob Schluntz
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Andrew Beach
12	// Last Modified On : Tue Nov 30 10:25:00 2021
13	// Update Count : 659
14	//
15
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 <cassert> // for assertf
20	#include <cstdio> // for fopen, FILE, fclose, stdin
21	#include <cstdlib> // for exit, free, abort, EXIT_F...
22	#include <csignal> // for signal, SIGABRT, SIGSEGV
23	#include <cstring> // for index
24	#include <fstream> // for ofstream
25	#include <iostream> // for operator<<, basic_ostream
26	#include <iomanip>
27	#include <iterator> // for back_inserter
28	#include <list> // for list
29	#include <string> // for char_traits, operator<<
30
31	using namespace std;
32
33	#include "AST/Convert.hpp"
34	#include "CompilationState.h"
35	#include "../config.h" // for CFA_LIBDIR
36	#include "CodeGen/FixMain.h" // for FixMain
37	#include "CodeGen/FixNames.h" // for fixNames
38	#include "CodeGen/Generate.h" // for generate
39	#include "CodeGen/LinkOnce.h" // for translateLinkOnce
40	#include "CodeTools/DeclStats.h" // for printDeclStats
41	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
42	#include "CodeTools/TrackLoc.h" // for fillLocations
43	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
44	#include "Common/CompilerError.h" // for CompilerError
45	#include "Common/DeclStats.hpp" // for printDeclStats
46	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
47	#include "Common/Stats.h"
48	#include "Common/PassVisitor.h"
49	#include "Common/SemanticError.h" // for SemanticError
50	#include "Common/UnimplementedError.h" // for UnimplementedError
51	#include "Common/utility.h" // for deleteAll, filter, printAll
52	#include "Concurrency/Keywords.h" // for implementMutex, implement...
53	#include "Concurrency/Waitfor.h" // for generateWaitfor
54	#include "ControlStruct/ExceptDecl.h" // for translateExcept
55	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
56	#include "ControlStruct/FixLabels.hpp" // for fixLabels
57	#include "ControlStruct/Mutate.h" // for mutate
58	#include "GenPoly/Box.h" // for box
59	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
60	#include "GenPoly/Lvalue.h" // for convertLvalue
61	#include "GenPoly/Specialize.h" // for convertSpecializations
62	#include "InitTweak/FixInit.h" // for fix
63	#include "InitTweak/GenInit.h" // for genInit
64	#include "MakeLibCfa.h" // for makeLibCfa
65	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
66	#include "Parser/TypedefTable.h" // for TypedefTable
67	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
68	#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
69	#include "ResolvExpr/Resolver.h" // for resolve
70	#include "SymTab/Validate.h" // for validate
71	#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
72	#include "SynTree/Declaration.h" // for Declaration
73	#include "SynTree/Visitor.h" // for acceptAll
74	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
75	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
76	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
77	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
78	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
79	#include "Virtual/ExpandCasts.h" // for expandCasts
80
81
82	static void NewPass( const char * const name ) {
83	Stats::Heap::newPass( name );
84	using namespace Stats::Counters;
85	{
86	static auto group = build<CounterGroup>( "Pass Visitor" );
87	auto pass = build<CounterGroup>( name, group );
88	pass_visitor_stats.depth = 0;
89	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
90	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
91	}
92	{
93	static auto group = build<CounterGroup>( "Syntax Node" );
94	auto pass = build<CounterGroup>( name, group );
95	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
96	}
97	}
98
99	#define PASS( name, pass ) \
100	if ( errorp ) { cerr << name << endl; } \
101	NewPass(name); \
102	Stats::Time::StartBlock(name); \
103	pass; \
104	Stats::Time::StopBlock();
105
106	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
107	TypedefTable typedefTable;
108	DeclarationNode * parseTree = nullptr; // program parse tree
109
110	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
111
112	static string PreludeDirector = "";
113
114	static void parse_cmdline( int argc, char * argv[] );
115	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
116	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
117	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
118
119	static void backtrace( int start ) { // skip first N stack frames
120	enum { Frames = 50, }; // maximum number of stack frames
121	void * array[Frames];
122	size_t size = ::backtrace( array, Frames );
123	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
124
125	*index( messages[0], '(' ) = '\0'; // find executable name
126	cerr << "Stack back trace for: " << messages[0] << endl;
127
128	// skip last 2 stack frames after main
129	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
130	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
131
132	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
133	if ( *p == '(' ) {
134	mangled_name = p;
135	} else if ( *p == '+' ) {
136	offset_begin = p;
137	} else if ( *p == ')' ) {
138	offset_end = p;
139	break;
140	} // if
141	} // for
142
143	// if line contains symbol, attempt to demangle
144	int frameNo = i - start;
145	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
146	*mangled_name++ = '\0'; // delimit strings
147	*offset_begin++ = '\0';
148	*offset_end++ = '\0';
149
150	int status;
151	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
152	// bug in __cxa_demangle for single-character lower-case non-mangled names
153	if ( status == 0 ) { // demangling successful ?
154	cerr << "(" << frameNo << ") " << messages[i] << " : "
155	<< real_name << "+" << offset_begin << offset_end << endl;
156	} else { // otherwise, output mangled name
157	cerr << "(" << frameNo << ") " << messages[i] << " : "
158	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
159	} // if
160
161	free( real_name );
162	} else { // otherwise, print the whole line
163	cerr << "(" << frameNo << ") " << messages[i] << endl;
164	} // if
165	} // for
166
167	free( messages );
168	} // backtrace
169
170	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
171
172	static void _Signal(struct sigaction & act, int sig, int flags ) {
173	act.sa_flags = flags;
174
175	if ( sigaction( sig, &act, nullptr ) == -1 ) {
176	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
177	_exit( EXIT_FAILURE );
178	} // if
179	}
180
181	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
182	struct sigaction act;
183	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
184	_Signal(act, sig, flags);
185	} // Signal
186
187	static void Signal( int sig, void (* handler)(int), int flags ) {
188	struct sigaction act;
189	act.sa_handler = handler;
190	_Signal(act, sig, flags);
191	} // Signal
192
193	static void sigSegvBusHandler( SIGPARMS ) {
194	if ( sfp->si_addr == nullptr ) {
195	cerr << "Null pointer (nullptr) dereference." << endl;
196	} else {
197	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
198	<< "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;
199	} // if
200	backtrace( 2 ); // skip first 2 stack frames
201	abort(); // cause core dump for debugging
202	} // sigSegvBusHandler
203
204	static void sigFpeHandler( SIGPARMS ) {
205	const char * msg;
206
207	switch ( sfp->si_code ) {
208	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
209	case FPE_FLTOVF: msg = "overflow"; break;
210	case FPE_FLTUND: msg = "underflow"; break;
211	case FPE_FLTRES: msg = "inexact result"; break;
212	case FPE_FLTINV: msg = "invalid operation"; break;
213	default: msg = "unknown";
214	} // choose
215	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
216	<< "Possible cause is constant-expression evaluation invalid." << endl;
217	backtrace( 2 ); // skip first 2 stack frames
218	abort(); // cause core dump for debugging
219	} // sigFpeHandler
220
221	static void sigAbortHandler( SIGPARMS ) {
222	backtrace( 6 ); // skip first 6 stack frames
223	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
224	raise( SIGABRT ); // reraise SIGABRT
225	} // sigAbortHandler
226
227	int main( int argc, char * argv[] ) {
228	FILE * input; // use FILE rather than istream because yyin is FILE
229	ostream * output = & cout;
230	list< Declaration * > translationUnit;
231
232	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
233	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
234	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
235	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
236
237	// cout << "main" << endl;
238	// for ( int i = 0; i < argc; i += 1 ) {
239	// cout << '\t' << argv[i] << endl;
240	// } // for
241
242	parse_cmdline( argc, argv ); // process command-line arguments
243	CodeGen::FixMain::setReplaceMain( !nomainp );
244
245	if ( waiting_for_gdb ) {
246	cerr << "Waiting for gdb" << endl;
247	cerr << "run :" << endl;
248	cerr << " gdb attach " << getpid() << endl;
249	raise(SIGSTOP);
250	} // if
251
252	try {
253	// choose to read the program from a file or stdin
254	if ( optind < argc ) { // any commands after the flags ? => input file name
255	input = fopen( argv[ optind ], "r" );
256	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
257	optind += 1;
258	} else { // no input file name
259	input = stdin;
260	} // if
261
262	Stats::Time::StartGlobal();
263	NewPass("Parse");
264	Stats::Time::StartBlock("Parse");
265
266	// read in the builtins, extras, and the prelude
267	if ( ! nopreludep ) { // include gcc builtins
268	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
269
270	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
271
272	// Read to gcc builtins, if not generating the cfa library
273	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
274	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
275	parse( gcc_builtins, LinkageSpec::Compiler );
276
277	// read the extra prelude in, if not generating the cfa library
278	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
279	assertf( extras, "cannot open extras.cf\n" );
280	parse( extras, LinkageSpec::BuiltinC );
281
282	if ( ! libcfap ) {
283	// read the prelude in, if not generating the cfa library
284	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
285	assertf( prelude, "cannot open prelude.cfa\n" );
286	parse( prelude, LinkageSpec::Intrinsic );
287
288	// Read to cfa builtins, if not generating the cfa library
289	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
290	assertf( builtins, "cannot open builtins.cf\n" );
291	parse( builtins, LinkageSpec::BuiltinCFA );
292	} // if
293	} // if
294
295	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
296
297	if ( parsep ) {
298	parseTree->printList( cout );
299	delete parseTree;
300	return EXIT_SUCCESS;
301	} // if
302
303	buildList( parseTree, translationUnit );
304	delete parseTree;
305	parseTree = nullptr;
306
307	if ( astp ) {
308	dump( translationUnit );
309	return EXIT_SUCCESS;
310	} // if
311
312	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
313	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
314	// works okay for now.
315	CodeTools::fillLocations( translationUnit );
316	Stats::Time::StopBlock();
317
318	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
319	if ( exdeclp ) {
320	dump( translationUnit );
321	return EXIT_SUCCESS;
322	} // if
323
324	// add the assignment statement after the initialization of a type parameter
325	PASS( "Validate-A", SymTab::validate_A( translationUnit ) );
326	PASS( "Validate-B", SymTab::validate_B( translationUnit ) );
327	PASS( "Validate-C", SymTab::validate_C( translationUnit ) );
328	PASS( "Validate-D", SymTab::validate_D( translationUnit ) );
329
330	CodeTools::fillLocations( translationUnit );
331
332	if( useNewAST ) {
333	if (Stats::Counters::enabled) {
334	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
335	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
336	}
337	auto transUnit = convert( move( translationUnit ) );
338
339	forceFillCodeLocations( transUnit );
340
341	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
342	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
343	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
344	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
345	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
346	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
347
348	if ( symtabp ) {
349	return EXIT_SUCCESS;
350	} // if
351
352	if ( expraltp ) {
353	ResolvExpr::printCandidates( transUnit );
354	return EXIT_SUCCESS;
355	} // if
356
357	if ( validp ) {
358	dump( move( transUnit ) );
359	return EXIT_SUCCESS;
360	} // if
361
362	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
363	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
364	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
365	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
366	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
367
368	if ( libcfap ) {
369	// Generate the bodies of cfa library functions.
370	LibCfa::makeLibCfa( transUnit );
371	} // if
372
373	if ( declstatsp ) {
374	printDeclStats( transUnit );
375	return EXIT_SUCCESS;
376	} // if
377
378	if ( bresolvep ) {
379	dump( move( transUnit ) );
380	return EXIT_SUCCESS;
381	} // if
382
383	if ( resolvprotop ) {
384	dumpAsResolverProto( transUnit );
385	return EXIT_SUCCESS;
386	} // if
387
388	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
389	if ( exprp ) {
390	dump( move( transUnit ) );
391	return EXIT_SUCCESS;
392	} // if
393
394	forceFillCodeLocations( transUnit );
395
396	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
397
398	// fix ObjectDecl - replaces ConstructorInit nodes
399	if ( ctorinitp ) {
400	dump( move( transUnit ) );
401	return EXIT_SUCCESS;
402	} // if
403
404	// Currently not working due to unresolved issues with UniqueExpr
405	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
406
407	PASS( "Translate Tries" , ControlStruct::translateTries( transUnit ) );
408
409	translationUnit = convert( move( transUnit ) );
410	} else {
411	PASS( "Validate-E", SymTab::validate_E( translationUnit ) );
412	PASS( "Validate-F", SymTab::validate_F( translationUnit ) );
413
414	if ( symtabp ) {
415	deleteAll( translationUnit );
416	return EXIT_SUCCESS;
417	} // if
418
419	if ( expraltp ) {
420	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
421	acceptAll( translationUnit, printer );
422	return EXIT_SUCCESS;
423	} // if
424
425	if ( validp ) {
426	dump( translationUnit );
427	return EXIT_SUCCESS;
428	} // if
429
430	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
431	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
432	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
433	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
434	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
435
436	if ( libcfap ) {
437	// Generate the bodies of cfa library functions.
438	LibCfa::makeLibCfa( translationUnit );
439	} // if
440
441	if ( declstatsp ) {
442	CodeTools::printDeclStats( translationUnit );
443	deleteAll( translationUnit );
444	return EXIT_SUCCESS;
445	} // if
446
447	if ( bresolvep ) {
448	dump( translationUnit );
449	return EXIT_SUCCESS;
450	} // if
451
452	CodeTools::fillLocations( translationUnit );
453
454	if ( resolvprotop ) {
455	CodeTools::dumpAsResolvProto( translationUnit );
456	return EXIT_SUCCESS;
457	} // if
458
459	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
460	if ( exprp ) {
461	dump( translationUnit );
462	return EXIT_SUCCESS;
463	}
464
465	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
466
467	// fix ObjectDecl - replaces ConstructorInit nodes
468	if ( ctorinitp ) {
469	dump ( translationUnit );
470	return EXIT_SUCCESS;
471	} // if
472
473	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
474
475	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
476	}
477
478
479
480	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
481
482	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
483
484	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
485
486	if ( tuplep ) {
487	dump( translationUnit );
488	return EXIT_SUCCESS;
489	} // if
490
491	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
492
493	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
494	if ( genericsp ) {
495	dump( translationUnit );
496	return EXIT_SUCCESS;
497	} // if
498
499	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
500
501	if ( bboxp ) {
502	dump( translationUnit );
503	return EXIT_SUCCESS;
504	} // if
505	PASS( "Box", GenPoly::box( translationUnit ) );
506
507	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
508
509	// Code has been lowered to C, now we can start generation.
510
511	if ( bcodegenp ) {
512	dump( translationUnit );
513	return EXIT_SUCCESS;
514	} // if
515
516	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
517	output = new ofstream( argv[ optind ] );
518	} // if
519
520	CodeTools::fillLocations( translationUnit );
521	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
522
523	CodeGen::FixMain::fix( translationUnit, *output,
524	(PreludeDirector + "/bootloader.c").c_str() );
525	if ( output != &cout ) {
526	delete output;
527	} // if
528	} catch ( SemanticErrorException & e ) {
529	if ( errorp ) {
530	cerr << "---AST at error:---" << endl;
531	dump( translationUnit, cerr );
532	cerr << endl << "---End of AST, begin error message:---\n" << endl;
533	} // if
534	e.print();
535	if ( output != &cout ) {
536	delete output;
537	} // if
538	return EXIT_FAILURE;
539	} catch ( UnimplementedError & e ) {
540	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
541	if ( output != &cout ) {
542	delete output;
543	} // if
544	return EXIT_FAILURE;
545	} catch ( CompilerError & e ) {
546	cerr << "Compiler Error: " << e.get_what() << endl;
547	cerr << "(please report bugs to [REDACTED])" << endl;
548	if ( output != &cout ) {
549	delete output;
550	} // if
551	return EXIT_FAILURE;
552	} catch ( std::bad_alloc & ) {
553	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
554	backtrace( 1 );
555	abort();
556	} catch ( ... ) {
557	exception_ptr eptr = current_exception();
558	try {
559	if (eptr) {
560	rethrow_exception(eptr);
561	} else {
562	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
563	} // if
564	} catch( const exception & e ) {
565	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
566	} // try
567	return EXIT_FAILURE;
568	} // try
569
570	deleteAll( translationUnit );
571	Stats::print();
572	return EXIT_SUCCESS;
573	} // main
574
575
576	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
577
578	enum { PreludeDir = 128 };
579	static struct option long_opts[] = {
580	{ "colors", required_argument, nullptr, 'c' },
581	{ "gdb", no_argument, nullptr, 'g' },
582	{ "help", no_argument, nullptr, 'h' },
583	{ "libcfa", no_argument, nullptr, 'l' },
584	{ "linemarks", no_argument, nullptr, 'L' },
585	{ "no-main", no_argument, 0, 'm' },
586	{ "no-linemarks", no_argument, nullptr, 'N' },
587	{ "no-prelude", no_argument, nullptr, 'n' },
588	{ "prototypes", no_argument, nullptr, 'p' },
589	{ "deterministic-out", no_argument, nullptr, 'd' },
590	{ "old-ast", no_argument, nullptr, 'O'},
591	{ "new-ast", no_argument, nullptr, 'A'},
592	{ "print", required_argument, nullptr, 'P' },
593	{ "prelude-dir", required_argument, nullptr, PreludeDir },
594	{ "statistics", required_argument, nullptr, 'S' },
595	{ "tree", no_argument, nullptr, 't' },
596	{ "", no_argument, nullptr, 0 }, // -w
597	{ "", no_argument, nullptr, 0 }, // -W
598	{ "", no_argument, nullptr, 0 }, // -D
599	{ nullptr, 0, nullptr, 0 }
600	}; // long_opts
601
602	static const char * description[] = {
603	"diagnostic color: never, always, auto", // -c
604	"wait for gdb to attach", // -g
605	"print translator help message", // -h
606	"generate libcfa.c", // -l
607	"generate line marks", // -L
608	"do not replace main", // -m
609	"do not generate line marks", // -N
610	"do not read prelude", // -n
611	"do not generate prelude prototypes => prelude not printed", // -p
612	"only print deterministic output", // -d
613	"Use the old-ast", // -O
614	"Use the new-ast", // -A
615	"print", // -P
616	"<directory> prelude directory for debug/nodebug", // no flag
617	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
618	"building cfa standard lib", // -t
619	"", // -w
620	"", // -W
621	"", // -D
622	}; // description
623
624	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
625
626	static struct Printopts {
627	const char * name;
628	int & flag;
629	int val;
630	const char * descript;
631	} printopts[] = {
632	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
633	{ "asterr", errorp, true, "print AST on error" },
634	{ "declstats", declstatsp, true, "code property statistics" },
635	{ "parse", yydebug, true, "yacc (parsing) debug information" },
636	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
637	{ "rproto", resolvprotop, true, "resolver-proto instance" },
638	{ "rsteps", resolvep, true, "print resolver steps" },
639	{ "tree", parsep, true, "print parse tree" },
640	// code dumps
641	{ "ast", astp, true, "print AST after parsing" },
642	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
643	{ "symevt", symtabp, true, "print AST after symbol table events" },
644	{ "altexpr", expraltp, true, "print alternatives for expressions" },
645	{ "astdecl", validp, true, "print AST after declaration validation pass" },
646	{ "resolver", bresolvep, true, "print AST before resolver step" },
647	{ "astexpr", exprp, true, "print AST after expression analysis" },
648	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
649	{ "tuple", tuplep, true, "print AST after tuple expansion" },
650	{ "astgen", genericsp, true, "print AST after instantiate generics" },
651	{ "box", bboxp, true, "print AST before box step" },
652	{ "codegen", bcodegenp, true, "print AST before code generation" },
653	};
654	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
655
656	static void usage( char * argv[] ) {
657	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
658	int i = 0, j = 1; // j skips starting colon
659	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
660	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
661	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
662	cout << " -" << optstring[j] << ",";
663	} else { // no flag
664	j -= 1; // compensate
665	cout << " ";
666	} // if
667	cout << " --" << left << setw(12) << long_opts[i].name << " ";
668	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
669	cout << "one of: " << endl;
670	for ( int i = 0; i < printoptsSize; i += 1 ) {
671	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
672	} // for
673	} else {
674	cout << description[i] << endl;
675	} // if
676	} // if
677	if ( optstring[j + 1] == ':' ) j += 1;
678	} // for
679	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
680	exit( EXIT_FAILURE );
681	} // usage
682
683	static void parse_cmdline( int argc, char * argv[] ) {
684	opterr = 0; // (global) prevent getopt from printing error messages
685
686	bool Wsuppress = false, Werror = false;
687	int c;
688	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
689	switch ( c ) {
690	case 'c': // diagnostic colors
691	if ( strcmp( optarg, "always" ) == 0 ) {
692	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
693	} else if ( strcmp( optarg, "never" ) == 0 ) {
694	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
695	} else if ( strcmp( optarg, "auto" ) == 0 ) {
696	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
697	} // if
698	break;
699	case 'h': // help message
700	usage( argv ); // no return
701	break;
702	case 'l': // generate libcfa.c
703	libcfap = true;
704	break;
705	case 'L': // generate line marks
706	linemarks = true;
707	break;
708	case 'm': // do not replace main
709	nomainp = true;
710	break;
711	case 'N': // do not generate line marks
712	linemarks = false;
713	break;
714	case 'n': // do not read prelude
715	nopreludep = true;
716	break;
717	case 'p': // generate prototypes for prelude functions
718	genproto = true;
719	break;
720	case 'd': // don't print non-deterministic output
721	deterministic_output = true;
722	break;
723	case 'O': // don't print non-deterministic output
724	useNewAST = false;
725	break;
726	case 'A': // don't print non-deterministic output
727	useNewAST = true;
728	break;
729	case 'P': // print options
730	for ( int i = 0;; i += 1 ) {
731	if ( i == printoptsSize ) {
732	cout << "Unknown --print option " << optarg << endl;
733	goto Default;
734	} // if
735	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
736	printopts[i].flag = printopts[i].val;
737	break;
738	} // if
739	} // for
740	break;
741	case PreludeDir: // prelude directory for debug/nodebug, hidden
742	PreludeDirector = optarg;
743	break;
744	case 'S': // enable profiling information, argument comma separated list of names
745	Stats::parse_params( optarg );
746	break;
747	case 't': // building cfa stdlib
748	treep = true;
749	break;
750	case 'g': // wait for gdb
751	waiting_for_gdb = true;
752	break;
753	case 'w': // suppress all warnings, hidden
754	Wsuppress = true;
755	break;
756	case 'W': // coordinate gcc -W with CFA, hidden
757	if ( strcmp( optarg, "all" ) == 0 ) {
758	SemanticWarning_EnableAll();
759	} else if ( strcmp( optarg, "error" ) == 0 ) {
760	Werror = true;
761	} else {
762	char * warning = optarg;
763	Severity s;
764	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
765	warning += 3;
766	s = Severity::Suppress;
767	} else {
768	s = Severity::Warn;
769	} // if
770	SemanticWarning_Set( warning, s );
771	} // if
772	break;
773	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
774	break;
775	case '?': // unknown option
776	if ( optopt ) { // short option ?
777	cout << "Unknown option -" << (char)optopt << endl;
778	} else {
779	cout << "Unknown option " << argv[optind - 1] << endl;
780	} // if
781	goto Default;
782	case ':': // missing option
783	if ( optopt ) { // short option ?
784	cout << "Missing option for -" << (char)optopt << endl;
785	} else {
786	cout << "Missing option for " << argv[optind - 1] << endl;
787	} // if
788	goto Default;
789	Default:
790	default:
791	usage( argv ); // no return
792	} // switch
793	} // while
794
795	if ( Werror ) {
796	SemanticWarning_WarningAsError();
797	} // if
798	if ( Wsuppress ) {
799	SemanticWarning_SuppressAll();
800	} // if
801	// for ( const auto w : WarningFormats ) {
802	// cout << w.name << ' ' << (int)w.severity << endl;
803	// } // for
804	} // parse_cmdline
805
806	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
807	extern int yyparse( void );
808	extern FILE * yyin;
809	extern int yylineno;
810
811	::linkage = linkage; // set globals
812	yyin = input;
813	yylineno = 1;
814	int parseStatus = yyparse();
815
816	fclose( input );
817	if ( shouldExit \|\| parseStatus != 0 ) {
818	exit( parseStatus );
819	} // if
820	} // parse
821
822	static bool notPrelude( Declaration * decl ) {
823	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
824	} // notPrelude
825
826	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
827	list< Declaration * > decls;
828
829	if ( genproto ) {
830	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
831	} else {
832	decls = translationUnit;
833	} // if
834
835	// depending on commandline options, either generate code or dump the AST
836	if ( codegenp ) {
837	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
838	} else {
839	printAll( decls, out );
840	} // if
841	deleteAll( translationUnit );
842	} // dump
843
844	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
845	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
846	dump( translationUnit, out );
847	}
848
849	// Local Variables: //
850	// tab-width: 4 //
851	// mode: c++ //
852	// compile-command: "make install" //
853	// End: //

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