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source: src/main.cc @ 21a2a7d

ADTast-experimental

Last change on this file since 21a2a7d was 3dd8f42, checked in by caparsons <caparson@…>, 15 months ago
added actor support to the compiler
Property mode set to `100644`
File size: 28.9 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 Oct 5 12:06:00 2022
13	// Update Count : 679
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/TrackLoc.h" // for fillLocations
41	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
42	#include "Common/CompilerError.h" // for CompilerError
43	#include "Common/DeclStats.hpp" // for printDeclStats
44	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
45	#include "Common/Stats.h" // for Stats
46	#include "Common/UnimplementedError.h" // for UnimplementedError
47	#include "Common/utility.h" // for deleteAll, filter, printAll
48	#include "Concurrency/Actors.hpp" // for implementActors
49	#include "Concurrency/Keywords.h" // for implementMutex, implement...
50	#include "Concurrency/Waitfor.h" // for generateWaitfor
51	#include "ControlStruct/ExceptDecl.h" // for translateExcept
52	#include "ControlStruct/ExceptTranslate.h" // for translateThrows, translat...
53	#include "ControlStruct/FixLabels.hpp" // for fixLabels
54	#include "ControlStruct/HoistControlDecls.hpp" // hoistControlDecls
55	#include "GenPoly/Box.h" // for box
56	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
57	#include "GenPoly/Lvalue.h" // for convertLvalue
58	#include "GenPoly/Specialize.h" // for convertSpecializations
59	#include "InitTweak/FixInit.h" // for fix
60	#include "InitTweak/GenInit.h" // for genInit
61	#include "MakeLibCfa.h" // for makeLibCfa
62	#include "Parser/RunParser.hpp" // for buildList, dumpParseTree,...
63	#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
64	#include "ResolvExpr/Resolver.h" // for resolve
65	#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
66	#include "SynTree/Declaration.h" // for Declaration
67	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
68	#include "Validate/Autogen.hpp" // for autogenerateRoutines
69	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
70	#include "Validate/EliminateTypedef.hpp" // for eliminateTypedef
71	#include "Validate/EnumAndPointerDecay.hpp" // for decayEnumsAndPointers
72	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
73	#include "Validate/FixQualifiedTypes.hpp" // for fixQualifiedTypes
74	#include "Validate/FixReturnTypes.hpp" // for fixReturnTypes
75	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
76	#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
77	#include "Validate/HoistStruct.hpp" // for hoistStruct
78	#include "Validate/HoistTypeDecls.hpp" // for hoistTypeDecls
79	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
80	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
81	#include "Validate/LinkReferenceToTypes.hpp" // for linkReferenceToTypes
82	#include "Validate/ReplaceTypedef.hpp" // for replaceTypedef
83	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
84	#include "Validate/VerifyCtorDtorAssign.hpp" // for verifyCtorDtorAssign
85	#include "Virtual/ExpandCasts.h" // for expandCasts
86
87	static void NewPass( const char * const name ) {
88	Stats::Heap::newPass( name );
89	using namespace Stats::Counters;
90	{
91	static auto group = build<CounterGroup>( "Pass Visitor" );
92	auto pass = build<CounterGroup>( name, group );
93	pass_visitor_stats.depth = 0;
94	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
95	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
96	}
97	{
98	static auto group = build<CounterGroup>( "Syntax Node" );
99	auto pass = build<CounterGroup>( name, group );
100	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
101	}
102	}
103
104	#define PASS( name, pass ) \
105	if ( errorp ) { cerr << name << endl; } \
106	NewPass(name); \
107	Stats::Time::StartBlock(name); \
108	pass; \
109	Stats::Time::StopBlock();
110
111	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
112
113	static string PreludeDirector = "";
114
115	static void parse_cmdline( int argc, char * argv[] );
116	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
117	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
118
119	static void backtrace( int start ) { // skip first N stack frames
120	enum { Frames = 50, }; // maximum number of stack frames
121	void * array[Frames];
122	size_t size = ::backtrace( array, Frames );
123	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
124
125	*index( messages[0], '(' ) = '\0'; // find executable name
126	cerr << "Stack back trace for: " << messages[0] << endl;
127
128	// skip last 2 stack frames after main
129	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
130	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
131
132	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
133	if ( *p == '(' ) {
134	mangled_name = p;
135	} else if ( *p == '+' ) {
136	offset_begin = p;
137	} else if ( *p == ')' ) {
138	offset_end = p;
139	break;
140	} // if
141	} // for
142
143	// if line contains symbol, attempt to demangle
144	int frameNo = i - start;
145	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
146	*mangled_name++ = '\0'; // delimit strings
147	*offset_begin++ = '\0';
148	*offset_end++ = '\0';
149
150	int status;
151	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
152	// bug in __cxa_demangle for single-character lower-case non-mangled names
153	if ( status == 0 ) { // demangling successful ?
154	cerr << "(" << frameNo << ") " << messages[i] << " : "
155	<< real_name << "+" << offset_begin << offset_end << endl;
156	} else { // otherwise, output mangled name
157	cerr << "(" << frameNo << ") " << messages[i] << " : "
158	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
159	} // if
160
161	free( real_name );
162	} else { // otherwise, print the whole line
163	cerr << "(" << frameNo << ") " << messages[i] << endl;
164	} // if
165	} // for
166
167	free( messages );
168	} // backtrace
169
170	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
171
172	static void _Signal(struct sigaction & act, int sig, int flags ) {
173	act.sa_flags = flags;
174
175	if ( sigaction( sig, &act, nullptr ) == -1 ) {
176	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
177	_exit( EXIT_FAILURE );
178	} // if
179	}
180
181	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
182	struct sigaction act;
183	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
184	_Signal(act, sig, flags);
185	} // Signal
186
187	static void Signal( int sig, void (* handler)(int), int flags ) {
188	struct sigaction act;
189	act.sa_handler = handler;
190	_Signal(act, sig, flags);
191	} // Signal
192
193	static void sigSegvBusHandler( SIGPARMS ) {
194	if ( sfp->si_addr == nullptr ) {
195	cerr << "Null pointer (nullptr) dereference." << endl;
196	} else {
197	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
198	<< "Possible cause is reading outside the address space or writing to a protected area within the address space with an invalid pointer or subscript." << endl;
199	} // if
200	backtrace( 2 ); // skip first 2 stack frames
201	abort(); // cause core dump for debugging
202	} // sigSegvBusHandler
203
204	static void sigFpeHandler( SIGPARMS ) {
205	const char * msg;
206
207	switch ( sfp->si_code ) {
208	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
209	case FPE_FLTOVF: msg = "overflow"; break;
210	case FPE_FLTUND: msg = "underflow"; break;
211	case FPE_FLTRES: msg = "inexact result"; break;
212	case FPE_FLTINV: msg = "invalid operation"; break;
213	default: msg = "unknown";
214	} // choose
215	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
216	<< "Possible cause is constant-expression evaluation invalid." << endl;
217	backtrace( 2 ); // skip first 2 stack frames
218	abort(); // cause core dump for debugging
219	} // sigFpeHandler
220
221	static void sigAbortHandler( SIGPARMS ) {
222	backtrace( 6 ); // skip first 6 stack frames
223	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
224	raise( SIGABRT ); // reraise SIGABRT
225	} // sigAbortHandler
226
227	int main( int argc, char * argv[] ) {
228	FILE * input; // use FILE rather than istream because yyin is FILE
229	ostream * output = & cout;
230	list< Declaration * > translationUnit;
231	ast::TranslationUnit transUnit;
232
233	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
234	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
235	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
236	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
237
238	// cout << "main" << endl;
239	// for ( int i = 0; i < argc; i += 1 ) {
240	// cout << '\t' << argv[i] << endl;
241	// } // for
242
243	parse_cmdline( argc, argv ); // process command-line arguments
244	CodeGen::FixMain::setReplaceMain( !nomainp );
245
246	if ( waiting_for_gdb ) {
247	cerr << "Waiting for gdb" << endl;
248	cerr << "run :" << endl;
249	cerr << " gdb attach " << getpid() << endl;
250	raise(SIGSTOP);
251	} // if
252
253	try {
254	// choose to read the program from a file or stdin
255	if ( optind < argc ) { // any commands after the flags ? => input file name
256	input = fopen( argv[ optind ], "r" );
257	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
258	optind += 1;
259	} else { // no input file name
260	input = stdin;
261	} // if
262
263	Stats::Time::StartGlobal();
264	NewPass("Parse");
265	Stats::Time::StartBlock("Parse");
266
267	// read in the builtins, extras, and the prelude
268	if ( ! nopreludep ) { // include gcc builtins
269	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
270
271	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
272
273	// Read to gcc builtins, if not generating the cfa library
274	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
275	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
276	parse( gcc_builtins, LinkageSpec::Compiler );
277
278	// read the extra prelude in, if not generating the cfa library
279	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
280	assertf( extras, "cannot open extras.cf\n" );
281	parse( extras, LinkageSpec::BuiltinC );
282
283	if ( ! libcfap ) {
284	// read the prelude in, if not generating the cfa library
285	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
286	assertf( prelude, "cannot open prelude.cfa\n" );
287	parse( prelude, LinkageSpec::Intrinsic );
288
289	// Read to cfa builtins, if not generating the cfa library
290	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
291	assertf( builtins, "cannot open builtins.cf\n" );
292	parse( builtins, LinkageSpec::BuiltinCFA );
293	} // if
294	} // if
295
296	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
297
298	transUnit = buildUnit();
299
300	if ( astp ) {
301	dump( std::move( transUnit ) );
302	return EXIT_SUCCESS;
303	} // if
304
305	Stats::Time::StopBlock();
306
307	if (Stats::Counters::enabled) {
308	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
309	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
310	}
311
312	PASS( "Hoist Type Decls", Validate::hoistTypeDecls( transUnit ) );
313	// Hoist Type Decls pulls some declarations out of contexts where
314	// locations are not tracked. Perhaps they should be, but for now
315	// the full fill solves it.
316	forceFillCodeLocations( transUnit );
317
318	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( transUnit ) );
319	if ( exdeclp ) {
320	dump( std::move( transUnit ) );
321	return EXIT_SUCCESS;
322	}
323
324	PASS( "Verify Ctor, Dtor & Assign", Validate::verifyCtorDtorAssign( transUnit ) );
325	PASS( "Replace Typedefs", Validate::replaceTypedef( transUnit ) );
326	PASS( "Fix Return Types", Validate::fixReturnTypes( transUnit ) );
327	PASS( "Enum and Pointer Decay", Validate::decayEnumsAndPointers( transUnit ) );
328
329	PASS( "Link Reference To Types", Validate::linkReferenceToTypes( transUnit ) );
330
331	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes( transUnit ) );
332	PASS( "Hoist Struct", Validate::hoistStruct( transUnit ) );
333	PASS( "Eliminate Typedef", Validate::eliminateTypedef( transUnit ) );
334	PASS( "Validate Generic Parameters", Validate::fillGenericParameters( transUnit ) );
335	PASS( "Translate Dimensions", Validate::translateDimensionParameters( transUnit ) );
336	PASS( "Check Function Returns", Validate::checkReturnStatements( transUnit ) );
337	PASS( "Fix Return Statements", InitTweak::fixReturnStatements( transUnit ) );
338	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords( transUnit ) );
339	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
340	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
341
342	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
343
344	PASS( "Implement Actors", Concurrency::implementActors( transUnit ) );
345
346	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
347	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
348	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
349	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
350	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
351	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
352
353	if ( symtabp ) {
354	return EXIT_SUCCESS;
355	} // if
356
357	if ( expraltp ) {
358	ResolvExpr::printCandidates( transUnit );
359	return EXIT_SUCCESS;
360	} // if
361
362	if ( validp ) {
363	dump( std::move( transUnit ) );
364	return EXIT_SUCCESS;
365	} // if
366
367	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
368	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
369	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
370	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
371	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
372
373	if ( libcfap ) {
374	// Generate the bodies of cfa library functions.
375	LibCfa::makeLibCfa( transUnit );
376	} // if
377
378	if ( declstatsp ) {
379	printDeclStats( transUnit );
380	return EXIT_SUCCESS;
381	} // if
382
383	if ( bresolvep ) {
384	dump( std::move( transUnit ) );
385	return EXIT_SUCCESS;
386	} // if
387
388	if ( resolvprotop ) {
389	dumpAsResolverProto( transUnit );
390	return EXIT_SUCCESS;
391	} // if
392
393	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
394	if ( exprp ) {
395	dump( std::move( transUnit ) );
396	return EXIT_SUCCESS;
397	} // if
398
399	forceFillCodeLocations( transUnit );
400
401	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
402
403	// fix ObjectDecl - replaces ConstructorInit nodes
404	if ( ctorinitp ) {
405	dump( std::move( transUnit ) );
406	return EXIT_SUCCESS;
407	} // if
408
409	// Currently not working due to unresolved issues with UniqueExpr
410	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
411
412	PASS( "Translate Tries", ControlStruct::translateTries( transUnit ) );
413	PASS( "Gen Waitfor", Concurrency::generateWaitFor( transUnit ) );
414
415	// Needs to happen before tuple types are expanded.
416	PASS( "Convert Specializations", GenPoly::convertSpecializations( transUnit ) );
417
418	PASS( "Expand Tuples", Tuples::expandTuples( transUnit ) );
419
420	if ( tuplep ) {
421	dump( std::move( transUnit ) );
422	return EXIT_SUCCESS;
423	} // if
424
425	// Must come after Translate Tries.
426	PASS( "Virtual Expand Casts", Virtual::expandCasts( transUnit ) );
427
428	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( transUnit ) );
429	if ( genericsp ) {
430	dump( std::move( transUnit ) );
431	return EXIT_SUCCESS;
432	} // if
433
434	PASS( "Convert L-Value", GenPoly::convertLvalue( transUnit ) );
435
436	translationUnit = convert( std::move( transUnit ) );
437
438	if ( bboxp ) {
439	dump( translationUnit );
440	return EXIT_SUCCESS;
441	} // if
442	PASS( "Box", GenPoly::box( translationUnit ) );
443
444	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
445
446	// Code has been lowered to C, now we can start generation.
447
448	if ( bcodegenp ) {
449	dump( translationUnit );
450	return EXIT_SUCCESS;
451	} // if
452
453	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
454	output = new ofstream( argv[ optind ] );
455	} // if
456
457	CodeTools::fillLocations( translationUnit );
458	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
459
460	CodeGen::FixMain::fix( translationUnit, *output,
461	(PreludeDirector + "/bootloader.c").c_str() );
462	if ( output != &cout ) {
463	delete output;
464	} // if
465	} catch ( SemanticErrorException & e ) {
466	if ( errorp ) {
467	cerr << "---AST at error:---" << endl;
468	// We check which section the errors came from without looking at
469	// transUnit because std::move means it could look like anything.
470	if ( !translationUnit.empty() ) {
471	dump( translationUnit, cerr );
472	} else {
473	dump( std::move( transUnit ), cerr );
474	}
475	cerr << endl << "---End of AST, begin error message:---\n" << endl;
476	} // if
477	e.print();
478	if ( output != &cout ) {
479	delete output;
480	} // if
481	return EXIT_FAILURE;
482	} catch ( UnimplementedError & e ) {
483	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
484	if ( output != &cout ) {
485	delete output;
486	} // if
487	return EXIT_FAILURE;
488	} catch ( CompilerError & e ) {
489	cerr << "Compiler Error: " << e.get_what() << endl;
490	cerr << "(please report bugs to [REDACTED])" << endl;
491	if ( output != &cout ) {
492	delete output;
493	} // if
494	return EXIT_FAILURE;
495	} catch ( std::bad_alloc & ) {
496	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
497	backtrace( 1 );
498	abort();
499	} catch ( ... ) {
500	exception_ptr eptr = current_exception();
501	try {
502	if (eptr) {
503	rethrow_exception(eptr);
504	} else {
505	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
506	} // if
507	} catch( const exception & e ) {
508	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
509	} // try
510	return EXIT_FAILURE;
511	} // try
512
513	deleteAll( translationUnit );
514	Stats::print();
515	return EXIT_SUCCESS;
516	} // main
517
518
519	static const char optstring[] = ":c:ghlLmNnpdP:S:twW:D:";
520
521	enum { PreludeDir = 128 };
522	static struct option long_opts[] = {
523	{ "colors", required_argument, nullptr, 'c' },
524	{ "gdb", no_argument, nullptr, 'g' },
525	{ "help", no_argument, nullptr, 'h' },
526	{ "libcfa", no_argument, nullptr, 'l' },
527	{ "linemarks", no_argument, nullptr, 'L' },
528	{ "no-main", no_argument, 0, 'm' },
529	{ "no-linemarks", no_argument, nullptr, 'N' },
530	{ "no-prelude", no_argument, nullptr, 'n' },
531	{ "prototypes", no_argument, nullptr, 'p' },
532	{ "deterministic-out", no_argument, nullptr, 'd' },
533	{ "print", required_argument, nullptr, 'P' },
534	{ "prelude-dir", required_argument, nullptr, PreludeDir },
535	{ "statistics", required_argument, nullptr, 'S' },
536	{ "tree", no_argument, nullptr, 't' },
537	{ "", no_argument, nullptr, 0 }, // -w
538	{ "", no_argument, nullptr, 0 }, // -W
539	{ "", no_argument, nullptr, 0 }, // -D
540	{ nullptr, 0, nullptr, 0 }
541	}; // long_opts
542
543	static const char * description[] = {
544	"diagnostic color: never, always, auto", // -c
545	"wait for gdb to attach", // -g
546	"print translator help message", // -h
547	"generate libcfa.c", // -l
548	"generate line marks", // -L
549	"do not replace main", // -m
550	"do not generate line marks", // -N
551	"do not read prelude", // -n
552	"do not generate prelude prototypes => prelude not printed", // -p
553	"only print deterministic output", // -d
554	"print", // -P
555	"<directory> prelude directory for debug/nodebug", // no flag
556	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
557	"building cfa standard lib", // -t
558	"", // -w
559	"", // -W
560	"", // -D
561	}; // description
562
563	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
564
565	static struct Printopts {
566	const char * name;
567	int & flag;
568	int val;
569	const char * descript;
570	} printopts[] = {
571	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
572	{ "asterr", errorp, true, "print AST on error" },
573	{ "declstats", declstatsp, true, "code property statistics" },
574	{ "parse", yydebug, true, "yacc (parsing) debug information" },
575	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
576	{ "rproto", resolvprotop, true, "resolver-proto instance" },
577	{ "rsteps", resolvep, true, "print resolver steps" },
578	// code dumps
579	{ "ast", astp, true, "print AST after parsing" },
580	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
581	{ "symevt", symtabp, true, "print AST after symbol table events" },
582	{ "altexpr", expraltp, true, "print alternatives for expressions" },
583	{ "astdecl", validp, true, "print AST after declaration validation pass" },
584	{ "resolver", bresolvep, true, "print AST before resolver step" },
585	{ "astexpr", exprp, true, "print AST after expression analysis" },
586	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
587	{ "tuple", tuplep, true, "print AST after tuple expansion" },
588	{ "astgen", genericsp, true, "print AST after instantiate generics" },
589	{ "box", bboxp, true, "print AST before box step" },
590	{ "codegen", bcodegenp, true, "print AST before code generation" },
591	};
592	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
593
594	static void usage( char * argv[] ) {
595	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
596	int i = 0, j = 1; // j skips starting colon
597	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
598	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
599	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
600	cout << " -" << optstring[j] << ",";
601	} else { // no flag
602	j -= 1; // compensate
603	cout << " ";
604	} // if
605	cout << " --" << left << setw(12) << long_opts[i].name << " ";
606	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
607	cout << "one of: " << endl;
608	for ( int i = 0; i < printoptsSize; i += 1 ) {
609	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
610	} // for
611	} else {
612	cout << description[i] << endl;
613	} // if
614	} // if
615	if ( optstring[j + 1] == ':' ) j += 1;
616	} // for
617	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
618	exit( EXIT_FAILURE );
619	} // usage
620
621	static void parse_cmdline( int argc, char * argv[] ) {
622	opterr = 0; // (global) prevent getopt from printing error messages
623
624	bool Wsuppress = false, Werror = false;
625	int c;
626	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
627	switch ( c ) {
628	case 'c': // diagnostic colors
629	if ( strcmp( optarg, "always" ) == 0 ) {
630	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
631	} else if ( strcmp( optarg, "never" ) == 0 ) {
632	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
633	} else if ( strcmp( optarg, "auto" ) == 0 ) {
634	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
635	} // if
636	break;
637	case 'h': // help message
638	usage( argv ); // no return
639	break;
640	case 'l': // generate libcfa.c
641	libcfap = true;
642	break;
643	case 'L': // generate line marks
644	linemarks = true;
645	break;
646	case 'm': // do not replace main
647	nomainp = true;
648	break;
649	case 'N': // do not generate line marks
650	linemarks = false;
651	break;
652	case 'n': // do not read prelude
653	nopreludep = true;
654	break;
655	case 'p': // generate prototypes for prelude functions
656	genproto = true;
657	break;
658	case 'd': // don't print non-deterministic output
659	deterministic_output = true;
660	break;
661	case 'P': // print options
662	for ( int i = 0;; i += 1 ) {
663	if ( i == printoptsSize ) {
664	cout << "Unknown --print option " << optarg << endl;
665	goto Default;
666	} // if
667	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
668	printopts[i].flag = printopts[i].val;
669	break;
670	} // if
671	} // for
672	break;
673	case PreludeDir: // prelude directory for debug/nodebug, hidden
674	PreludeDirector = optarg;
675	break;
676	case 'S': // enable profiling information, argument comma separated list of names
677	Stats::parse_params( optarg );
678	break;
679	case 't': // building cfa stdlib
680	treep = true;
681	break;
682	case 'g': // wait for gdb
683	waiting_for_gdb = true;
684	break;
685	case 'w': // suppress all warnings, hidden
686	Wsuppress = true;
687	break;
688	case 'W': // coordinate gcc -W with CFA, hidden
689	if ( strcmp( optarg, "all" ) == 0 ) {
690	SemanticWarning_EnableAll();
691	} else if ( strcmp( optarg, "error" ) == 0 ) {
692	Werror = true;
693	} else {
694	char * warning = optarg;
695	Severity s;
696	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
697	warning += 3;
698	s = Severity::Suppress;
699	} else {
700	s = Severity::Warn;
701	} // if
702	SemanticWarning_Set( warning, s );
703	} // if
704	break;
705	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
706	break;
707	case '?': // unknown option
708	if ( optopt ) { // short option ?
709	cout << "Unknown option -" << (char)optopt << endl;
710	} else {
711	cout << "Unknown option " << argv[optind - 1] << endl;
712	} // if
713	goto Default;
714	case ':': // missing option
715	if ( optopt ) { // short option ?
716	cout << "Missing option for -" << (char)optopt << endl;
717	} else {
718	cout << "Missing option for " << argv[optind - 1] << endl;
719	} // if
720	goto Default;
721	Default:
722	default:
723	usage( argv ); // no return
724	} // switch
725	} // while
726
727	if ( Werror ) {
728	SemanticWarning_WarningAsError();
729	} // if
730	if ( Wsuppress ) {
731	SemanticWarning_SuppressAll();
732	} // if
733	// for ( const auto w : WarningFormats ) {
734	// cout << w.name << ' ' << (int)w.severity << endl;
735	// } // for
736	} // parse_cmdline
737
738	static bool notPrelude( Declaration * decl ) {
739	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
740	} // notPrelude
741
742	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
743	list< Declaration * > decls;
744
745	if ( genproto ) {
746	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
747	} else {
748	decls = translationUnit;
749	} // if
750
751	// depending on commandline options, either generate code or dump the AST
752	if ( codegenp ) {
753	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
754	} else {
755	printAll( decls, out );
756	} // if
757	deleteAll( translationUnit );
758	} // dump
759
760	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
761	std::list< Declaration * > translationUnit = convert( std::move( transUnit ) );
762	dump( translationUnit, out );
763	}
764
765	// Local Variables: //
766	// tab-width: 4 //
767	// mode: c++ //
768	// compile-command: "make install" //
769	// End: //

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