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source: src/main.cc @ afe9e45

ADTast-experimentalenumpthread-emulationqualifiedEnum

Last change on this file since afe9e45 was 9490621, checked in by Andrew Beach <ajbeach@…>, 3 years ago
My work in progress implementation of ForallPointerDecay? for Fangren.
Property mode set to `100644`
File size: 31.9 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 : Wed Jan 26 14:09:00 2022
13	// Update Count : 670
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 "AST/Print.hpp"
35	#include "CompilationState.h"
36	#include "../config.h" // for CFA_LIBDIR
37	#include "CodeGen/FixMain.h" // for FixMain
38	#include "CodeGen/FixNames.h" // for fixNames
39	#include "CodeGen/Generate.h" // for generate
40	#include "CodeGen/LinkOnce.h" // for translateLinkOnce
41	#include "CodeTools/DeclStats.h" // for printDeclStats
42	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
43	#include "CodeTools/TrackLoc.h" // for fillLocations
44	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
45	#include "Common/CompilerError.h" // for CompilerError
46	#include "Common/DeclStats.hpp" // for printDeclStats
47	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
48	#include "Common/Stats.h"
49	#include "Common/PassVisitor.h"
50	#include "Common/SemanticError.h" // for SemanticError
51	#include "Common/UnimplementedError.h" // for UnimplementedError
52	#include "Common/utility.h" // for deleteAll, filter, printAll
53	#include "Concurrency/Keywords.h" // for implementMutex, implement...
54	#include "Concurrency/Waitfor.h" // for generateWaitfor
55	#include "ControlStruct/ExceptDecl.h" // for translateExcept
56	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
57	#include "ControlStruct/FixLabels.hpp" // for fixLabels
58	#include "ControlStruct/HoistControlDecls.hpp" // hoistControlDecls
59	#include "ControlStruct/Mutate.h" // for mutate
60	#include "GenPoly/Box.h" // for box
61	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
62	#include "GenPoly/Lvalue.h" // for convertLvalue
63	#include "GenPoly/Specialize.h" // for convertSpecializations
64	#include "InitTweak/FixInit.h" // for fix
65	#include "InitTweak/GenInit.h" // for genInit
66	#include "MakeLibCfa.h" // for makeLibCfa
67	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
68	#include "Parser/TypedefTable.h" // for TypedefTable
69	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
70	#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
71	#include "ResolvExpr/Resolver.h" // for resolve
72	#include "SymTab/Validate.h" // for validate
73	#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
74	#include "SynTree/Declaration.h" // for Declaration
75	#include "SynTree/Visitor.h" // for acceptAll
76	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
77	#include "Validate/Autogen.hpp" // for autogenerateRoutines
78	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
79	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
80	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
81	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
82	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
83	#include "Virtual/ExpandCasts.h" // for expandCasts
84
85	static void NewPass( const char * const name ) {
86	Stats::Heap::newPass( name );
87	using namespace Stats::Counters;
88	{
89	static auto group = build<CounterGroup>( "Pass Visitor" );
90	auto pass = build<CounterGroup>( name, group );
91	pass_visitor_stats.depth = 0;
92	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
93	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
94	}
95	{
96	static auto group = build<CounterGroup>( "Syntax Node" );
97	auto pass = build<CounterGroup>( name, group );
98	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
99	}
100	}
101
102	#define PASS( name, pass ) \
103	if ( errorp ) { cerr << name << endl; } \
104	NewPass(name); \
105	Stats::Time::StartBlock(name); \
106	pass; \
107	Stats::Time::StopBlock();
108
109	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
110	TypedefTable typedefTable;
111	DeclarationNode * parseTree = nullptr; // program parse tree
112
113	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
114
115	static string PreludeDirector = "";
116
117	static void parse_cmdline( int argc, char * argv[] );
118	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
119	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
120	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
121
122	static void backtrace( int start ) { // skip first N stack frames
123	enum { Frames = 50, }; // maximum number of stack frames
124	void * array[Frames];
125	size_t size = ::backtrace( array, Frames );
126	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
127
128	*index( messages[0], '(' ) = '\0'; // find executable name
129	cerr << "Stack back trace for: " << messages[0] << endl;
130
131	// skip last 2 stack frames after main
132	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
133	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
134
135	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
136	if ( *p == '(' ) {
137	mangled_name = p;
138	} else if ( *p == '+' ) {
139	offset_begin = p;
140	} else if ( *p == ')' ) {
141	offset_end = p;
142	break;
143	} // if
144	} // for
145
146	// if line contains symbol, attempt to demangle
147	int frameNo = i - start;
148	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
149	*mangled_name++ = '\0'; // delimit strings
150	*offset_begin++ = '\0';
151	*offset_end++ = '\0';
152
153	int status;
154	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
155	// bug in __cxa_demangle for single-character lower-case non-mangled names
156	if ( status == 0 ) { // demangling successful ?
157	cerr << "(" << frameNo << ") " << messages[i] << " : "
158	<< real_name << "+" << offset_begin << offset_end << endl;
159	} else { // otherwise, output mangled name
160	cerr << "(" << frameNo << ") " << messages[i] << " : "
161	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
162	} // if
163
164	free( real_name );
165	} else { // otherwise, print the whole line
166	cerr << "(" << frameNo << ") " << messages[i] << endl;
167	} // if
168	} // for
169
170	free( messages );
171	} // backtrace
172
173	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
174
175	static void _Signal(struct sigaction & act, int sig, int flags ) {
176	act.sa_flags = flags;
177
178	if ( sigaction( sig, &act, nullptr ) == -1 ) {
179	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
180	_exit( EXIT_FAILURE );
181	} // if
182	}
183
184	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
185	struct sigaction act;
186	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
187	_Signal(act, sig, flags);
188	} // Signal
189
190	static void Signal( int sig, void (* handler)(int), int flags ) {
191	struct sigaction act;
192	act.sa_handler = handler;
193	_Signal(act, sig, flags);
194	} // Signal
195
196	static void sigSegvBusHandler( SIGPARMS ) {
197	if ( sfp->si_addr == nullptr ) {
198	cerr << "Null pointer (nullptr) dereference." << endl;
199	} else {
200	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
201	<< "Possible cause is reading outside the address space or writing to a protected area within the address space with an invalid pointer or subscript." << endl;
202	} // if
203	backtrace( 2 ); // skip first 2 stack frames
204	abort(); // cause core dump for debugging
205	} // sigSegvBusHandler
206
207	static void sigFpeHandler( SIGPARMS ) {
208	const char * msg;
209
210	switch ( sfp->si_code ) {
211	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
212	case FPE_FLTOVF: msg = "overflow"; break;
213	case FPE_FLTUND: msg = "underflow"; break;
214	case FPE_FLTRES: msg = "inexact result"; break;
215	case FPE_FLTINV: msg = "invalid operation"; break;
216	default: msg = "unknown";
217	} // choose
218	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
219	<< "Possible cause is constant-expression evaluation invalid." << endl;
220	backtrace( 2 ); // skip first 2 stack frames
221	abort(); // cause core dump for debugging
222	} // sigFpeHandler
223
224	static void sigAbortHandler( SIGPARMS ) {
225	backtrace( 6 ); // skip first 6 stack frames
226	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
227	raise( SIGABRT ); // reraise SIGABRT
228	} // sigAbortHandler
229
230	int main( int argc, char * argv[] ) {
231	FILE * input; // use FILE rather than istream because yyin is FILE
232	ostream * output = & cout;
233	list< Declaration * > translationUnit;
234
235	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
236	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
237	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
238	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
239
240	// cout << "main" << endl;
241	// for ( int i = 0; i < argc; i += 1 ) {
242	// cout << '\t' << argv[i] << endl;
243	// } // for
244
245	parse_cmdline( argc, argv ); // process command-line arguments
246	CodeGen::FixMain::setReplaceMain( !nomainp );
247
248	if ( waiting_for_gdb ) {
249	cerr << "Waiting for gdb" << endl;
250	cerr << "run :" << endl;
251	cerr << " gdb attach " << getpid() << endl;
252	raise(SIGSTOP);
253	} // if
254
255	try {
256	// choose to read the program from a file or stdin
257	if ( optind < argc ) { // any commands after the flags ? => input file name
258	input = fopen( argv[ optind ], "r" );
259	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
260	optind += 1;
261	} else { // no input file name
262	input = stdin;
263	} // if
264
265	Stats::Time::StartGlobal();
266	NewPass("Parse");
267	Stats::Time::StartBlock("Parse");
268
269	// read in the builtins, extras, and the prelude
270	if ( ! nopreludep ) { // include gcc builtins
271	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
272
273	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
274
275	// Read to gcc builtins, if not generating the cfa library
276	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
277	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
278	parse( gcc_builtins, LinkageSpec::Compiler );
279
280	// read the extra prelude in, if not generating the cfa library
281	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
282	assertf( extras, "cannot open extras.cf\n" );
283	parse( extras, LinkageSpec::BuiltinC );
284
285	if ( ! libcfap ) {
286	// read the prelude in, if not generating the cfa library
287	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
288	assertf( prelude, "cannot open prelude.cfa\n" );
289	parse( prelude, LinkageSpec::Intrinsic );
290
291	// Read to cfa builtins, if not generating the cfa library
292	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
293	assertf( builtins, "cannot open builtins.cf\n" );
294	parse( builtins, LinkageSpec::BuiltinCFA );
295	} // if
296	} // if
297
298	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
299
300	if ( parsep ) {
301	parseTree->printList( cout );
302	delete parseTree;
303	return EXIT_SUCCESS;
304	} // if
305
306	buildList( parseTree, translationUnit );
307	delete parseTree;
308	parseTree = nullptr;
309
310	if ( astp ) {
311	dump( translationUnit );
312	return EXIT_SUCCESS;
313	} // if
314
315	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
316	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
317	// works okay for now.
318	CodeTools::fillLocations( translationUnit );
319	Stats::Time::StopBlock();
320
321	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
322	if ( exdeclp ) {
323	dump( translationUnit );
324	return EXIT_SUCCESS;
325	} // if
326
327	// add the assignment statement after the initialization of a type parameter
328	PASS( "Validate-A", SymTab::validate_A( translationUnit ) );
329	PASS( "Validate-B", SymTab::validate_B( translationUnit ) );
330	PASS( "Validate-C", SymTab::validate_C( translationUnit ) );
331
332	CodeTools::fillLocations( translationUnit );
333
334	if( useNewAST ) {
335	PASS( "Implement Concurrent Keywords", Concurrency::applyKeywords( translationUnit ) );
336	//PASS( "Forall Pointer Decay - A", SymTab::decayForallPointersA( translationUnit ) );
337	//PASS( "Forall Pointer Decay - B", SymTab::decayForallPointersB( translationUnit ) );
338	//PASS( "Forall Pointer Decay - C", SymTab::decayForallPointersC( translationUnit ) );
339	//PASS( "Forall Pointer Decay - D", SymTab::decayForallPointersD( translationUnit ) );
340	CodeTools::fillLocations( translationUnit );
341
342	if (Stats::Counters::enabled) {
343	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
344	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
345	}
346	auto transUnit = convert( move( translationUnit ) );
347
348	forceFillCodeLocations( transUnit );
349
350	// Must be after implement concurrent keywords; because uniqueIds
351	// must be set on declaration before resolution.
352	// Must happen before autogen routines are added.
353	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
354
355	// Must happen before autogen routines are added.
356	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
357
358	// Must be after enum and pointer decay.
359	// Must be before compound literals.
360	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
361
362	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
363	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
364	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
365	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
366	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
367	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
368
369	if ( symtabp ) {
370	return EXIT_SUCCESS;
371	} // if
372
373	if ( expraltp ) {
374	ResolvExpr::printCandidates( transUnit );
375	return EXIT_SUCCESS;
376	} // if
377
378	if ( validp ) {
379	dump( move( transUnit ) );
380	return EXIT_SUCCESS;
381	} // if
382
383	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
384	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
385	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
386	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
387	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
388
389	if ( libcfap ) {
390	// Generate the bodies of cfa library functions.
391	LibCfa::makeLibCfa( transUnit );
392	} // if
393
394	if ( declstatsp ) {
395	printDeclStats( transUnit );
396	return EXIT_SUCCESS;
397	} // if
398
399	if ( bresolvep ) {
400	dump( move( transUnit ) );
401	return EXIT_SUCCESS;
402	} // if
403
404	if ( resolvprotop ) {
405	dumpAsResolverProto( transUnit );
406	return EXIT_SUCCESS;
407	} // if
408
409	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
410	if ( exprp ) {
411	dump( move( transUnit ) );
412	return EXIT_SUCCESS;
413	} // if
414
415	forceFillCodeLocations( transUnit );
416
417	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
418
419	// fix ObjectDecl - replaces ConstructorInit nodes
420	if ( ctorinitp ) {
421	dump( move( transUnit ) );
422	return EXIT_SUCCESS;
423	} // if
424
425	// Currently not working due to unresolved issues with UniqueExpr
426	PASS( "Expand Unique Expr", Tuples::expandUniqueExpr( transUnit ) ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused
427
428	PASS( "Translate Tries" , ControlStruct::translateTries( transUnit ) );
429
430	translationUnit = convert( move( transUnit ) );
431	} else {
432	PASS( "Validate-D", SymTab::validate_D( translationUnit ) );
433	PASS( "Validate-E", SymTab::validate_E( translationUnit ) );
434	PASS( "Validate-F", SymTab::validate_F( translationUnit ) );
435
436	if ( symtabp ) {
437	deleteAll( translationUnit );
438	return EXIT_SUCCESS;
439	} // if
440
441	if ( expraltp ) {
442	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
443	acceptAll( translationUnit, printer );
444	return EXIT_SUCCESS;
445	} // if
446
447	if ( validp ) {
448	dump( translationUnit );
449	return EXIT_SUCCESS;
450	} // if
451
452	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
453	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
454	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
455	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
456	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
457
458	if ( libcfap ) {
459	// Generate the bodies of cfa library functions.
460	LibCfa::makeLibCfa( translationUnit );
461	} // if
462
463	if ( declstatsp ) {
464	CodeTools::printDeclStats( translationUnit );
465	deleteAll( translationUnit );
466	return EXIT_SUCCESS;
467	} // if
468
469	if ( bresolvep ) {
470	dump( translationUnit );
471	return EXIT_SUCCESS;
472	} // if
473
474	CodeTools::fillLocations( translationUnit );
475
476	if ( resolvprotop ) {
477	CodeTools::dumpAsResolvProto( translationUnit );
478	return EXIT_SUCCESS;
479	} // if
480
481	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
482	if ( exprp ) {
483	dump( translationUnit );
484	return EXIT_SUCCESS;
485	}
486
487	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
488
489	// fix ObjectDecl - replaces ConstructorInit nodes
490	if ( ctorinitp ) {
491	dump ( translationUnit );
492	return EXIT_SUCCESS;
493	} // if
494
495	PASS( "Expand Unique Expr", Tuples::expandUniqueExpr( translationUnit ) ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused
496
497	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
498	}
499
500
501
502	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
503
504	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
505
506	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
507
508	if ( tuplep ) {
509	dump( translationUnit );
510	return EXIT_SUCCESS;
511	} // if
512
513	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
514
515	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
516	if ( genericsp ) {
517	dump( translationUnit );
518	return EXIT_SUCCESS;
519	} // if
520
521	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
522
523	if ( bboxp ) {
524	dump( translationUnit );
525	return EXIT_SUCCESS;
526	} // if
527	PASS( "Box", GenPoly::box( translationUnit ) );
528
529	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
530
531	// Code has been lowered to C, now we can start generation.
532
533	if ( bcodegenp ) {
534	dump( translationUnit );
535	return EXIT_SUCCESS;
536	} // if
537
538	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
539	output = new ofstream( argv[ optind ] );
540	} // if
541
542	CodeTools::fillLocations( translationUnit );
543	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
544
545	CodeGen::FixMain::fix( translationUnit, *output,
546	(PreludeDirector + "/bootloader.c").c_str() );
547	if ( output != &cout ) {
548	delete output;
549	} // if
550	} catch ( SemanticErrorException & e ) {
551	if ( errorp ) {
552	cerr << "---AST at error:---" << endl;
553	dump( translationUnit, cerr );
554	cerr << endl << "---End of AST, begin error message:---\n" << endl;
555	} // if
556	e.print();
557	if ( output != &cout ) {
558	delete output;
559	} // if
560	return EXIT_FAILURE;
561	} catch ( UnimplementedError & e ) {
562	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
563	if ( output != &cout ) {
564	delete output;
565	} // if
566	return EXIT_FAILURE;
567	} catch ( CompilerError & e ) {
568	cerr << "Compiler Error: " << e.get_what() << endl;
569	cerr << "(please report bugs to [REDACTED])" << endl;
570	if ( output != &cout ) {
571	delete output;
572	} // if
573	return EXIT_FAILURE;
574	} catch ( std::bad_alloc & ) {
575	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
576	backtrace( 1 );
577	abort();
578	} catch ( ... ) {
579	exception_ptr eptr = current_exception();
580	try {
581	if (eptr) {
582	rethrow_exception(eptr);
583	} else {
584	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
585	} // if
586	} catch( const exception & e ) {
587	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
588	} // try
589	return EXIT_FAILURE;
590	} // try
591
592	deleteAll( translationUnit );
593	Stats::print();
594	return EXIT_SUCCESS;
595	} // main
596
597
598	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
599
600	enum { PreludeDir = 128 };
601	static struct option long_opts[] = {
602	{ "colors", required_argument, nullptr, 'c' },
603	{ "gdb", no_argument, nullptr, 'g' },
604	{ "help", no_argument, nullptr, 'h' },
605	{ "libcfa", no_argument, nullptr, 'l' },
606	{ "linemarks", no_argument, nullptr, 'L' },
607	{ "no-main", no_argument, 0, 'm' },
608	{ "no-linemarks", no_argument, nullptr, 'N' },
609	{ "no-prelude", no_argument, nullptr, 'n' },
610	{ "prototypes", no_argument, nullptr, 'p' },
611	{ "deterministic-out", no_argument, nullptr, 'd' },
612	{ "old-ast", no_argument, nullptr, 'O'},
613	{ "new-ast", no_argument, nullptr, 'A'},
614	{ "print", required_argument, nullptr, 'P' },
615	{ "prelude-dir", required_argument, nullptr, PreludeDir },
616	{ "statistics", required_argument, nullptr, 'S' },
617	{ "tree", no_argument, nullptr, 't' },
618	{ "", no_argument, nullptr, 0 }, // -w
619	{ "", no_argument, nullptr, 0 }, // -W
620	{ "", no_argument, nullptr, 0 }, // -D
621	{ nullptr, 0, nullptr, 0 }
622	}; // long_opts
623
624	static const char * description[] = {
625	"diagnostic color: never, always, auto", // -c
626	"wait for gdb to attach", // -g
627	"print translator help message", // -h
628	"generate libcfa.c", // -l
629	"generate line marks", // -L
630	"do not replace main", // -m
631	"do not generate line marks", // -N
632	"do not read prelude", // -n
633	"do not generate prelude prototypes => prelude not printed", // -p
634	"only print deterministic output", // -d
635	"Use the old-ast", // -O
636	"Use the new-ast", // -A
637	"print", // -P
638	"<directory> prelude directory for debug/nodebug", // no flag
639	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
640	"building cfa standard lib", // -t
641	"", // -w
642	"", // -W
643	"", // -D
644	}; // description
645
646	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
647
648	static struct Printopts {
649	const char * name;
650	int & flag;
651	int val;
652	const char * descript;
653	} printopts[] = {
654	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
655	{ "asterr", errorp, true, "print AST on error" },
656	{ "declstats", declstatsp, true, "code property statistics" },
657	{ "parse", yydebug, true, "yacc (parsing) debug information" },
658	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
659	{ "rproto", resolvprotop, true, "resolver-proto instance" },
660	{ "rsteps", resolvep, true, "print resolver steps" },
661	{ "tree", parsep, true, "print parse tree" },
662	// code dumps
663	{ "ast", astp, true, "print AST after parsing" },
664	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
665	{ "symevt", symtabp, true, "print AST after symbol table events" },
666	{ "altexpr", expraltp, true, "print alternatives for expressions" },
667	{ "astdecl", validp, true, "print AST after declaration validation pass" },
668	{ "resolver", bresolvep, true, "print AST before resolver step" },
669	{ "astexpr", exprp, true, "print AST after expression analysis" },
670	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
671	{ "tuple", tuplep, true, "print AST after tuple expansion" },
672	{ "astgen", genericsp, true, "print AST after instantiate generics" },
673	{ "box", bboxp, true, "print AST before box step" },
674	{ "codegen", bcodegenp, true, "print AST before code generation" },
675	};
676	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
677
678	static void usage( char * argv[] ) {
679	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
680	int i = 0, j = 1; // j skips starting colon
681	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
682	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
683	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
684	cout << " -" << optstring[j] << ",";
685	} else { // no flag
686	j -= 1; // compensate
687	cout << " ";
688	} // if
689	cout << " --" << left << setw(12) << long_opts[i].name << " ";
690	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
691	cout << "one of: " << endl;
692	for ( int i = 0; i < printoptsSize; i += 1 ) {
693	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
694	} // for
695	} else {
696	cout << description[i] << endl;
697	} // if
698	} // if
699	if ( optstring[j + 1] == ':' ) j += 1;
700	} // for
701	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
702	exit( EXIT_FAILURE );
703	} // usage
704
705	static void parse_cmdline( int argc, char * argv[] ) {
706	opterr = 0; // (global) prevent getopt from printing error messages
707
708	bool Wsuppress = false, Werror = false;
709	int c;
710	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
711	switch ( c ) {
712	case 'c': // diagnostic colors
713	if ( strcmp( optarg, "always" ) == 0 ) {
714	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
715	} else if ( strcmp( optarg, "never" ) == 0 ) {
716	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
717	} else if ( strcmp( optarg, "auto" ) == 0 ) {
718	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
719	} // if
720	break;
721	case 'h': // help message
722	usage( argv ); // no return
723	break;
724	case 'l': // generate libcfa.c
725	libcfap = true;
726	break;
727	case 'L': // generate line marks
728	linemarks = true;
729	break;
730	case 'm': // do not replace main
731	nomainp = true;
732	break;
733	case 'N': // do not generate line marks
734	linemarks = false;
735	break;
736	case 'n': // do not read prelude
737	nopreludep = true;
738	break;
739	case 'p': // generate prototypes for prelude functions
740	genproto = true;
741	break;
742	case 'd': // don't print non-deterministic output
743	deterministic_output = true;
744	break;
745	case 'O': // don't print non-deterministic output
746	useNewAST = false;
747	break;
748	case 'A': // don't print non-deterministic output
749	useNewAST = true;
750	break;
751	case 'P': // print options
752	for ( int i = 0;; i += 1 ) {
753	if ( i == printoptsSize ) {
754	cout << "Unknown --print option " << optarg << endl;
755	goto Default;
756	} // if
757	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
758	printopts[i].flag = printopts[i].val;
759	break;
760	} // if
761	} // for
762	break;
763	case PreludeDir: // prelude directory for debug/nodebug, hidden
764	PreludeDirector = optarg;
765	break;
766	case 'S': // enable profiling information, argument comma separated list of names
767	Stats::parse_params( optarg );
768	break;
769	case 't': // building cfa stdlib
770	treep = true;
771	break;
772	case 'g': // wait for gdb
773	waiting_for_gdb = true;
774	break;
775	case 'w': // suppress all warnings, hidden
776	Wsuppress = true;
777	break;
778	case 'W': // coordinate gcc -W with CFA, hidden
779	if ( strcmp( optarg, "all" ) == 0 ) {
780	SemanticWarning_EnableAll();
781	} else if ( strcmp( optarg, "error" ) == 0 ) {
782	Werror = true;
783	} else {
784	char * warning = optarg;
785	Severity s;
786	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
787	warning += 3;
788	s = Severity::Suppress;
789	} else {
790	s = Severity::Warn;
791	} // if
792	SemanticWarning_Set( warning, s );
793	} // if
794	break;
795	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
796	break;
797	case '?': // unknown option
798	if ( optopt ) { // short option ?
799	cout << "Unknown option -" << (char)optopt << endl;
800	} else {
801	cout << "Unknown option " << argv[optind - 1] << endl;
802	} // if
803	goto Default;
804	case ':': // missing option
805	if ( optopt ) { // short option ?
806	cout << "Missing option for -" << (char)optopt << endl;
807	} else {
808	cout << "Missing option for " << argv[optind - 1] << endl;
809	} // if
810	goto Default;
811	Default:
812	default:
813	usage( argv ); // no return
814	} // switch
815	} // while
816
817	if ( Werror ) {
818	SemanticWarning_WarningAsError();
819	} // if
820	if ( Wsuppress ) {
821	SemanticWarning_SuppressAll();
822	} // if
823	// for ( const auto w : WarningFormats ) {
824	// cout << w.name << ' ' << (int)w.severity << endl;
825	// } // for
826	} // parse_cmdline
827
828	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
829	extern int yyparse( void );
830	extern FILE * yyin;
831	extern int yylineno;
832
833	::linkage = linkage; // set globals
834	yyin = input;
835	yylineno = 1;
836	int parseStatus = yyparse();
837
838	fclose( input );
839	if ( shouldExit \|\| parseStatus != 0 ) {
840	exit( parseStatus );
841	} // if
842	} // parse
843
844	static bool notPrelude( Declaration * decl ) {
845	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
846	} // notPrelude
847
848	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
849	list< Declaration * > decls;
850
851	if ( genproto ) {
852	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
853	} else {
854	decls = translationUnit;
855	} // if
856
857	// depending on commandline options, either generate code or dump the AST
858	if ( codegenp ) {
859	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
860	} else {
861	printAll( decls, out );
862	} // if
863	deleteAll( translationUnit );
864	} // dump
865
866	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
867	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
868	dump( translationUnit, out );
869	}
870
871	// Local Variables: //
872	// tab-width: 4 //
873	// mode: c++ //
874	// compile-command: "make install" //
875	// End: //

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