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source: src/main.cc @ 6b06abe

ADTast-experimentalenumpthread-emulationqualifiedEnum

Last change on this file since 6b06abe was 33b7d49, checked in by Andrew Beach <ajbeach@…>, 2 years ago
Added another check to checkInvariants for code locations. I also went through and made sure you can put it every after every new AST pass not followed by a forceFillCodeLocations.
Property mode set to `100644`
File size: 31.5 KB

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

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