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source: src/main.cc @ 4f6dda0

ADTast-experimentalenumpthread-emulationqualifiedEnum old-sched

Last change on this file since 4f6dda0 was 4f6dda0, checked in by Andrew Beach <ajbeach@…>, 2 years ago
Converted Implement Concurrent Keywords to the new AST. Includes updates to various helpers, including the virtual table and a lot of examine helpers.
Property mode set to `100644`
File size: 31.6 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 "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	CodeTools::fillLocations( translationUnit );
336
337	if (Stats::Counters::enabled) {
338	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
339	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
340	}
341	auto transUnit = convert( move( translationUnit ) );
342
343	forceFillCodeLocations( transUnit );
344
345	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords( transUnit ) );
346
347	// Must be after implement concurrent keywords; because uniqueIds
348	// must be set on declaration before resolution.
349	// Must happen before autogen routines are added.
350	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
351
352	// Must happen before autogen routines are added.
353	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
354
355	// Must be after enum and pointer decay.
356	// Must be before compound literals.
357	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
358
359	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
360	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
361	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
362	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
363	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
364	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
365
366	if ( symtabp ) {
367	return EXIT_SUCCESS;
368	} // if
369
370	if ( expraltp ) {
371	ResolvExpr::printCandidates( transUnit );
372	return EXIT_SUCCESS;
373	} // if
374
375	if ( validp ) {
376	dump( move( transUnit ) );
377	return EXIT_SUCCESS;
378	} // if
379
380	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
381	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
382	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
383	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
384	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
385
386	if ( libcfap ) {
387	// Generate the bodies of cfa library functions.
388	LibCfa::makeLibCfa( transUnit );
389	} // if
390
391	if ( declstatsp ) {
392	printDeclStats( transUnit );
393	return EXIT_SUCCESS;
394	} // if
395
396	if ( bresolvep ) {
397	dump( move( transUnit ) );
398	return EXIT_SUCCESS;
399	} // if
400
401	if ( resolvprotop ) {
402	dumpAsResolverProto( transUnit );
403	return EXIT_SUCCESS;
404	} // if
405
406	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
407	if ( exprp ) {
408	dump( move( transUnit ) );
409	return EXIT_SUCCESS;
410	} // if
411
412	forceFillCodeLocations( transUnit );
413
414	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
415
416	// fix ObjectDecl - replaces ConstructorInit nodes
417	if ( ctorinitp ) {
418	dump( move( transUnit ) );
419	return EXIT_SUCCESS;
420	} // if
421
422	// Currently not working due to unresolved issues with UniqueExpr
423	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
424
425	PASS( "Translate Tries" , ControlStruct::translateTries( transUnit ) );
426
427	translationUnit = convert( move( transUnit ) );
428	} else {
429	PASS( "Validate-D", SymTab::validate_D( translationUnit ) );
430	PASS( "Validate-E", SymTab::validate_E( translationUnit ) );
431	PASS( "Validate-F", SymTab::validate_F( translationUnit ) );
432
433	if ( symtabp ) {
434	deleteAll( translationUnit );
435	return EXIT_SUCCESS;
436	} // if
437
438	if ( expraltp ) {
439	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
440	acceptAll( translationUnit, printer );
441	return EXIT_SUCCESS;
442	} // if
443
444	if ( validp ) {
445	dump( translationUnit );
446	return EXIT_SUCCESS;
447	} // if
448
449	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
450	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
451	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
452	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
453	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
454
455	if ( libcfap ) {
456	// Generate the bodies of cfa library functions.
457	LibCfa::makeLibCfa( translationUnit );
458	} // if
459
460	if ( declstatsp ) {
461	CodeTools::printDeclStats( translationUnit );
462	deleteAll( translationUnit );
463	return EXIT_SUCCESS;
464	} // if
465
466	if ( bresolvep ) {
467	dump( translationUnit );
468	return EXIT_SUCCESS;
469	} // if
470
471	CodeTools::fillLocations( translationUnit );
472
473	if ( resolvprotop ) {
474	CodeTools::dumpAsResolvProto( translationUnit );
475	return EXIT_SUCCESS;
476	} // if
477
478	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
479	if ( exprp ) {
480	dump( translationUnit );
481	return EXIT_SUCCESS;
482	}
483
484	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
485
486	// fix ObjectDecl - replaces ConstructorInit nodes
487	if ( ctorinitp ) {
488	dump ( translationUnit );
489	return EXIT_SUCCESS;
490	} // if
491
492	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
493
494	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
495	}
496
497	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
498
499	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
500
501	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
502
503	if ( tuplep ) {
504	dump( translationUnit );
505	return EXIT_SUCCESS;
506	} // if
507
508	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
509
510	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
511	if ( genericsp ) {
512	dump( translationUnit );
513	return EXIT_SUCCESS;
514	} // if
515
516	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
517
518	if ( bboxp ) {
519	dump( translationUnit );
520	return EXIT_SUCCESS;
521	} // if
522	PASS( "Box", GenPoly::box( translationUnit ) );
523
524	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
525
526	// Code has been lowered to C, now we can start generation.
527
528	if ( bcodegenp ) {
529	dump( translationUnit );
530	return EXIT_SUCCESS;
531	} // if
532
533	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
534	output = new ofstream( argv[ optind ] );
535	} // if
536
537	CodeTools::fillLocations( translationUnit );
538	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
539
540	CodeGen::FixMain::fix( translationUnit, *output,
541	(PreludeDirector + "/bootloader.c").c_str() );
542	if ( output != &cout ) {
543	delete output;
544	} // if
545	} catch ( SemanticErrorException & e ) {
546	if ( errorp ) {
547	cerr << "---AST at error:---" << endl;
548	dump( translationUnit, cerr );
549	cerr << endl << "---End of AST, begin error message:---\n" << endl;
550	} // if
551	e.print();
552	if ( output != &cout ) {
553	delete output;
554	} // if
555	return EXIT_FAILURE;
556	} catch ( UnimplementedError & e ) {
557	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
558	if ( output != &cout ) {
559	delete output;
560	} // if
561	return EXIT_FAILURE;
562	} catch ( CompilerError & e ) {
563	cerr << "Compiler Error: " << e.get_what() << endl;
564	cerr << "(please report bugs to [REDACTED])" << endl;
565	if ( output != &cout ) {
566	delete output;
567	} // if
568	return EXIT_FAILURE;
569	} catch ( std::bad_alloc & ) {
570	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
571	backtrace( 1 );
572	abort();
573	} catch ( ... ) {
574	exception_ptr eptr = current_exception();
575	try {
576	if (eptr) {
577	rethrow_exception(eptr);
578	} else {
579	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
580	} // if
581	} catch( const exception & e ) {
582	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
583	} // try
584	return EXIT_FAILURE;
585	} // try
586
587	deleteAll( translationUnit );
588	Stats::print();
589	return EXIT_SUCCESS;
590	} // main
591
592
593	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
594
595	enum { PreludeDir = 128 };
596	static struct option long_opts[] = {
597	{ "colors", required_argument, nullptr, 'c' },
598	{ "gdb", no_argument, nullptr, 'g' },
599	{ "help", no_argument, nullptr, 'h' },
600	{ "libcfa", no_argument, nullptr, 'l' },
601	{ "linemarks", no_argument, nullptr, 'L' },
602	{ "no-main", no_argument, 0, 'm' },
603	{ "no-linemarks", no_argument, nullptr, 'N' },
604	{ "no-prelude", no_argument, nullptr, 'n' },
605	{ "prototypes", no_argument, nullptr, 'p' },
606	{ "deterministic-out", no_argument, nullptr, 'd' },
607	{ "old-ast", no_argument, nullptr, 'O'},
608	{ "new-ast", no_argument, nullptr, 'A'},
609	{ "print", required_argument, nullptr, 'P' },
610	{ "prelude-dir", required_argument, nullptr, PreludeDir },
611	{ "statistics", required_argument, nullptr, 'S' },
612	{ "tree", no_argument, nullptr, 't' },
613	{ "", no_argument, nullptr, 0 }, // -w
614	{ "", no_argument, nullptr, 0 }, // -W
615	{ "", no_argument, nullptr, 0 }, // -D
616	{ nullptr, 0, nullptr, 0 }
617	}; // long_opts
618
619	static const char * description[] = {
620	"diagnostic color: never, always, auto", // -c
621	"wait for gdb to attach", // -g
622	"print translator help message", // -h
623	"generate libcfa.c", // -l
624	"generate line marks", // -L
625	"do not replace main", // -m
626	"do not generate line marks", // -N
627	"do not read prelude", // -n
628	"do not generate prelude prototypes => prelude not printed", // -p
629	"only print deterministic output", // -d
630	"Use the old-ast", // -O
631	"Use the new-ast", // -A
632	"print", // -P
633	"<directory> prelude directory for debug/nodebug", // no flag
634	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
635	"building cfa standard lib", // -t
636	"", // -w
637	"", // -W
638	"", // -D
639	}; // description
640
641	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
642
643	static struct Printopts {
644	const char * name;
645	int & flag;
646	int val;
647	const char * descript;
648	} printopts[] = {
649	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
650	{ "asterr", errorp, true, "print AST on error" },
651	{ "declstats", declstatsp, true, "code property statistics" },
652	{ "parse", yydebug, true, "yacc (parsing) debug information" },
653	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
654	{ "rproto", resolvprotop, true, "resolver-proto instance" },
655	{ "rsteps", resolvep, true, "print resolver steps" },
656	{ "tree", parsep, true, "print parse tree" },
657	// code dumps
658	{ "ast", astp, true, "print AST after parsing" },
659	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
660	{ "symevt", symtabp, true, "print AST after symbol table events" },
661	{ "altexpr", expraltp, true, "print alternatives for expressions" },
662	{ "astdecl", validp, true, "print AST after declaration validation pass" },
663	{ "resolver", bresolvep, true, "print AST before resolver step" },
664	{ "astexpr", exprp, true, "print AST after expression analysis" },
665	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
666	{ "tuple", tuplep, true, "print AST after tuple expansion" },
667	{ "astgen", genericsp, true, "print AST after instantiate generics" },
668	{ "box", bboxp, true, "print AST before box step" },
669	{ "codegen", bcodegenp, true, "print AST before code generation" },
670	};
671	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
672
673	static void usage( char * argv[] ) {
674	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
675	int i = 0, j = 1; // j skips starting colon
676	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
677	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
678	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
679	cout << " -" << optstring[j] << ",";
680	} else { // no flag
681	j -= 1; // compensate
682	cout << " ";
683	} // if
684	cout << " --" << left << setw(12) << long_opts[i].name << " ";
685	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
686	cout << "one of: " << endl;
687	for ( int i = 0; i < printoptsSize; i += 1 ) {
688	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
689	} // for
690	} else {
691	cout << description[i] << endl;
692	} // if
693	} // if
694	if ( optstring[j + 1] == ':' ) j += 1;
695	} // for
696	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
697	exit( EXIT_FAILURE );
698	} // usage
699
700	static void parse_cmdline( int argc, char * argv[] ) {
701	opterr = 0; // (global) prevent getopt from printing error messages
702
703	bool Wsuppress = false, Werror = false;
704	int c;
705	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
706	switch ( c ) {
707	case 'c': // diagnostic colors
708	if ( strcmp( optarg, "always" ) == 0 ) {
709	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
710	} else if ( strcmp( optarg, "never" ) == 0 ) {
711	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
712	} else if ( strcmp( optarg, "auto" ) == 0 ) {
713	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
714	} // if
715	break;
716	case 'h': // help message
717	usage( argv ); // no return
718	break;
719	case 'l': // generate libcfa.c
720	libcfap = true;
721	break;
722	case 'L': // generate line marks
723	linemarks = true;
724	break;
725	case 'm': // do not replace main
726	nomainp = true;
727	break;
728	case 'N': // do not generate line marks
729	linemarks = false;
730	break;
731	case 'n': // do not read prelude
732	nopreludep = true;
733	break;
734	case 'p': // generate prototypes for prelude functions
735	genproto = true;
736	break;
737	case 'd': // don't print non-deterministic output
738	deterministic_output = true;
739	break;
740	case 'O': // don't print non-deterministic output
741	useNewAST = false;
742	break;
743	case 'A': // don't print non-deterministic output
744	useNewAST = true;
745	break;
746	case 'P': // print options
747	for ( int i = 0;; i += 1 ) {
748	if ( i == printoptsSize ) {
749	cout << "Unknown --print option " << optarg << endl;
750	goto Default;
751	} // if
752	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
753	printopts[i].flag = printopts[i].val;
754	break;
755	} // if
756	} // for
757	break;
758	case PreludeDir: // prelude directory for debug/nodebug, hidden
759	PreludeDirector = optarg;
760	break;
761	case 'S': // enable profiling information, argument comma separated list of names
762	Stats::parse_params( optarg );
763	break;
764	case 't': // building cfa stdlib
765	treep = true;
766	break;
767	case 'g': // wait for gdb
768	waiting_for_gdb = true;
769	break;
770	case 'w': // suppress all warnings, hidden
771	Wsuppress = true;
772	break;
773	case 'W': // coordinate gcc -W with CFA, hidden
774	if ( strcmp( optarg, "all" ) == 0 ) {
775	SemanticWarning_EnableAll();
776	} else if ( strcmp( optarg, "error" ) == 0 ) {
777	Werror = true;
778	} else {
779	char * warning = optarg;
780	Severity s;
781	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
782	warning += 3;
783	s = Severity::Suppress;
784	} else {
785	s = Severity::Warn;
786	} // if
787	SemanticWarning_Set( warning, s );
788	} // if
789	break;
790	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
791	break;
792	case '?': // unknown option
793	if ( optopt ) { // short option ?
794	cout << "Unknown option -" << (char)optopt << endl;
795	} else {
796	cout << "Unknown option " << argv[optind - 1] << endl;
797	} // if
798	goto Default;
799	case ':': // missing option
800	if ( optopt ) { // short option ?
801	cout << "Missing option for -" << (char)optopt << endl;
802	} else {
803	cout << "Missing option for " << argv[optind - 1] << endl;
804	} // if
805	goto Default;
806	Default:
807	default:
808	usage( argv ); // no return
809	} // switch
810	} // while
811
812	if ( Werror ) {
813	SemanticWarning_WarningAsError();
814	} // if
815	if ( Wsuppress ) {
816	SemanticWarning_SuppressAll();
817	} // if
818	// for ( const auto w : WarningFormats ) {
819	// cout << w.name << ' ' << (int)w.severity << endl;
820	// } // for
821	} // parse_cmdline
822
823	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
824	extern int yyparse( void );
825	extern FILE * yyin;
826	extern int yylineno;
827
828	::linkage = linkage; // set globals
829	yyin = input;
830	yylineno = 1;
831	int parseStatus = yyparse();
832
833	fclose( input );
834	if ( shouldExit \|\| parseStatus != 0 ) {
835	exit( parseStatus );
836	} // if
837	} // parse
838
839	static bool notPrelude( Declaration * decl ) {
840	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
841	} // notPrelude
842
843	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
844	list< Declaration * > decls;
845
846	if ( genproto ) {
847	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
848	} else {
849	decls = translationUnit;
850	} // if
851
852	// depending on commandline options, either generate code or dump the AST
853	if ( codegenp ) {
854	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
855	} else {
856	printAll( decls, out );
857	} // if
858	deleteAll( translationUnit );
859	} // dump
860
861	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
862	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
863	dump( translationUnit, out );
864	}
865
866	// Local Variables: //
867	// tab-width: 4 //
868	// mode: c++ //
869	// compile-command: "make install" //
870	// End: //

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