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source: src/main.cc @ c1e66d9

Last change on this file since c1e66d9 was c1e66d9, checked in by JiadaL <j82liang@…>, 9 months ago
Fix designator value in enumerated array and implemented enumerated array with inlined enume declaration
Property mode set to `100644`
File size: 28.9 KB

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1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// main.cc --
8	//
9	// Author : Peter Buhr and Rob Schluntz
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Mon Apr 10 21:12:17 2023
13	// Update Count : 682
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	#include "AST/Convert.hpp"
32	#include "AST/Pass.hpp" // for pass_visitor_stats
33	#include "AST/TranslationUnit.hpp" // for TranslationUnit
34	#include "AST/Util.hpp" // for checkInvariants
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/TrackLoc.h" // for fillLocations
42	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
43	#include "Common/DeclStats.hpp" // for printDeclStats
44	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
45	#include "Common/Stats.h" // for Stats
46	#include "Common/utility.h" // for deleteAll, filter, printAll
47	#include "Concurrency/Actors.hpp" // for implementActors
48	#include "Concurrency/Keywords.h" // for implementMutex, implement...
49	#include "Concurrency/Waitfor.h" // for generateWaitfor
50	#include "Concurrency/Waituntil.hpp" // for generateWaitUntil
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/FixEnumeratedArray.hpp" // for fixEnumeratedArray
76	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
77	#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
78	#include "Validate/HoistStruct.hpp" // for hoistStruct
79	#include "Validate/HoistTypeDecls.hpp" // for hoistTypeDecls
80	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
81	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
82	#include "Validate/LinkReferenceToTypes.hpp" // for linkReferenceToTypes
83	#include "Validate/ReplaceTypedef.hpp" // for replaceTypedef
84	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
85	#include "Validate/VerifyCtorDtorAssign.hpp" // for verifyCtorDtorAssign
86	#include "Virtual/ExpandCasts.h" // for expandCasts
87	#include "Virtual/VirtualDtor.hpp" // for implementVirtDtors
88
89	using namespace std;
90
91	static void NewPass( const char * const name ) {
92	Stats::Heap::newPass( name );
93	using namespace Stats::Counters;
94	{
95	static auto group = build<CounterGroup>( "Pass Visitor" );
96	auto pass = build<CounterGroup>( name, group );
97	pass_visitor_stats.depth = 0;
98	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
99	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
100	}
101	{
102	static auto group = build<CounterGroup>( "Syntax Node" );
103	auto pass = build<CounterGroup>( name, group );
104	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
105	}
106	}
107
108	// Helpers for checkInvariant:
109	void checkInvariants( std::list< Declaration * > & ) {}
110	using ast::checkInvariants;
111
112	#define PASS( name, pass, unit, ... ) \
113	if ( errorp ) { cerr << name << endl; } \
114	NewPass(name); \
115	Stats::Time::StartBlock(name); \
116	pass(unit,##__VA_ARGS__); \
117	Stats::Time::StopBlock(); \
118	if ( invariant ) { \
119	checkInvariants(unit); \
120	}
121
122	#define DUMP( cond, unit ) \
123	if ( cond ) { \
124	dump(unit); \
125	return EXIT_SUCCESS; \
126	}
127
128	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
129
130	static string PreludeDirector = "";
131
132	static void parse_cmdline( int argc, char * argv[] );
133	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
134	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
135
136	static void backtrace( int start ) { // skip first N stack frames
137	enum { Frames = 50, }; // maximum number of stack frames
138	void * array[Frames];
139	size_t size = ::backtrace( array, Frames );
140	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
141
142	*index( messages[0], '(' ) = '\0'; // find executable name
143	cerr << "Stack back trace for: " << messages[0] << endl;
144
145	// skip last 2 stack frames after main
146	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
147	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
148
149	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
150	if ( *p == '(' ) {
151	mangled_name = p;
152	} else if ( *p == '+' ) {
153	offset_begin = p;
154	} else if ( *p == ')' ) {
155	offset_end = p;
156	break;
157	} // if
158	} // for
159
160	// if line contains symbol, attempt to demangle
161	int frameNo = i - start;
162	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
163	*mangled_name++ = '\0'; // delimit strings
164	*offset_begin++ = '\0';
165	*offset_end++ = '\0';
166
167	int status;
168	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
169	// bug in __cxa_demangle for single-character lower-case non-mangled names
170	if ( status == 0 ) { // demangling successful ?
171	cerr << "(" << frameNo << ") " << messages[i] << " : "
172	<< real_name << "+" << offset_begin << offset_end << endl;
173	} else { // otherwise, output mangled name
174	cerr << "(" << frameNo << ") " << messages[i] << " : "
175	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
176	} // if
177
178	free( real_name );
179	} else { // otherwise, print the whole line
180	cerr << "(" << frameNo << ") " << messages[i] << endl;
181	} // if
182	} // for
183
184	free( messages );
185	} // backtrace
186
187	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
188
189	static void _Signal(struct sigaction & act, int sig, int flags ) {
190	act.sa_flags = flags;
191
192	if ( sigaction( sig, &act, nullptr ) == -1 ) {
193	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
194	_exit( EXIT_FAILURE );
195	} // if
196	}
197
198	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
199	struct sigaction act;
200	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
201	_Signal(act, sig, flags);
202	} // Signal
203
204	static void Signal( int sig, void (* handler)(int), int flags ) {
205	struct sigaction act;
206	act.sa_handler = handler;
207	_Signal(act, sig, flags);
208	} // Signal
209
210	static void sigSegvBusHandler( SIGPARMS ) {
211	if ( sfp->si_addr == nullptr ) {
212	cerr << "Null pointer (nullptr) dereference." << endl;
213	} else {
214	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
215	<< "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;
216	} // if
217	backtrace( 2 ); // skip first 2 stack frames
218	abort(); // cause core dump for debugging
219	} // sigSegvBusHandler
220
221	static void sigFpeHandler( SIGPARMS ) {
222	const char * msg;
223
224	switch ( sfp->si_code ) {
225	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
226	case FPE_FLTOVF: msg = "overflow"; break;
227	case FPE_FLTUND: msg = "underflow"; break;
228	case FPE_FLTRES: msg = "inexact result"; break;
229	case FPE_FLTINV: msg = "invalid operation"; break;
230	default: msg = "unknown";
231	} // choose
232	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
233	<< "Possible cause is constant-expression evaluation invalid." << endl;
234	backtrace( 2 ); // skip first 2 stack frames
235	abort(); // cause core dump for debugging
236	} // sigFpeHandler
237
238	static void sigAbortHandler( SIGPARMS ) {
239	backtrace( 6 ); // skip first 6 stack frames
240	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
241	raise( SIGABRT ); // reraise SIGABRT
242	} // sigAbortHandler
243
244	int main( int argc, char * argv[] ) {
245	FILE * input; // use FILE rather than istream because yyin is FILE
246	ostream * output = & cout;
247	list< Declaration * > translationUnit;
248	ast::TranslationUnit transUnit;
249
250	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
251	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
252	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
253	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
254
255	// cout << "main" << endl;
256	// for ( int i = 0; i < argc; i += 1 ) {
257	// cout << '\t' << argv[i] << endl;
258	// } // for
259
260	parse_cmdline( argc, argv ); // process command-line arguments
261	CodeGen::FixMain::setReplaceMain( !nomainp );
262
263	if ( waiting_for_gdb ) {
264	cerr << "Waiting for gdb" << endl;
265	cerr << "run :" << endl;
266	cerr << " gdb attach " << getpid() << endl;
267	raise(SIGSTOP);
268	} // if
269
270	try {
271	// choose to read the program from a file or stdin
272	if ( optind < argc ) { // any commands after the flags ? => input file name
273	input = fopen( argv[ optind ], "r" );
274	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
275	optind += 1;
276	} else { // no input file name
277	input = stdin;
278	} // if
279
280	Stats::Time::StartGlobal();
281	NewPass("Parse");
282	Stats::Time::StartBlock("Parse");
283
284	// read in the builtins, extras, and the prelude
285	if ( ! nopreludep ) { // include gcc builtins
286	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
287
288	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
289
290	// Read to gcc builtins, if not generating the cfa library
291	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
292	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
293	parse( gcc_builtins, ast::Linkage::Compiler );
294
295	// read the extra prelude in, if not generating the cfa library
296	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
297	assertf( extras, "cannot open extras.cf\n" );
298	parse( extras, ast::Linkage::BuiltinC );
299
300	if ( ! libcfap ) {
301	// read the prelude in, if not generating the cfa library
302	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
303	assertf( prelude, "cannot open prelude.cfa\n" );
304	parse( prelude, ast::Linkage::Intrinsic );
305
306	// Read to cfa builtins, if not generating the cfa library
307	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
308	assertf( builtins, "cannot open builtins.cf\n" );
309	parse( builtins, ast::Linkage::BuiltinCFA );
310	} // if
311	} // if
312
313	parse( input, libcfap ? ast::Linkage::Intrinsic : ast::Linkage::Cforall, yydebug );
314
315	transUnit = buildUnit();
316
317	DUMP( astp, std::move( transUnit ) );
318
319	Stats::Time::StopBlock();
320
321	if (Stats::Counters::enabled) {
322	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
323	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
324	}
325
326	PASS( "Hoist Type Decls", Validate::hoistTypeDecls, transUnit );
327
328	PASS( "Translate Exception Declarations", ControlStruct::translateExcept, transUnit );
329	DUMP( exdeclp, std::move( transUnit ) );
330	PASS( "Verify Ctor, Dtor & Assign", Validate::verifyCtorDtorAssign, transUnit );
331	PASS( "Replace Typedefs", Validate::replaceTypedef, transUnit );
332	PASS( "Fix Return Types", Validate::fixReturnTypes, transUnit );
333	PASS( "Enum and Pointer Decay", Validate::decayEnumsAndPointers, transUnit );
334
335	PASS( "Link Reference To Types", Validate::linkReferenceToTypes, transUnit );
336	PASS( "Fix Enumerated Array", Validate::fixEnumeratedArray, transUnit );
337
338	PASS( "Forall Pointer Decay", Validate::decayForallPointers, transUnit );
339	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes, transUnit );
340	PASS( "Eliminate Typedef", Validate::eliminateTypedef, transUnit );
341	PASS( "Hoist Struct", Validate::hoistStruct, transUnit );
342	PASS( "Validate Generic Parameters", Validate::fillGenericParameters, transUnit );
343	PASS( "Translate Dimensions", Validate::translateDimensionParameters, transUnit );
344	PASS( "Check Function Returns", Validate::checkReturnStatements, transUnit );
345	PASS( "Fix Return Statements", InitTweak::fixReturnStatements, transUnit );
346	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords, transUnit );
347	PASS( "Fix Unique Ids", Validate::fixUniqueIds, transUnit );
348	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls, transUnit );
349
350	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines, transUnit );
351
352	PASS( "Implement Actors", Concurrency::implementActors, transUnit );
353	PASS( "Implement Virtual Destructors", Virtual::implementVirtDtors, transUnit );
354	PASS( "Implement Mutex", Concurrency::implementMutex, transUnit );
355	PASS( "Implement Thread Start", Concurrency::implementThreadStarter, transUnit );
356	PASS( "Compound Literal", Validate::handleCompoundLiterals, transUnit );
357	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer, transUnit );
358	PASS( "Find Global Decls", Validate::findGlobalDecls, transUnit );
359	PASS( "Fix Label Address", Validate::fixLabelAddresses, transUnit );
360
361	if ( symtabp ) {
362	return EXIT_SUCCESS;
363	} // if
364
365	if ( expraltp ) {
366	ResolvExpr::printCandidates( transUnit );
367	return EXIT_SUCCESS;
368	} // if
369
370	DUMP( validp, std::move( transUnit ) );
371
372	PASS( "Translate Throws", ControlStruct::translateThrows, transUnit );
373	PASS( "Fix Labels", ControlStruct::fixLabels, transUnit );
374	PASS( "Implement Waituntil", Concurrency::generateWaitUntil, transUnit );
375	PASS( "Fix Names", CodeGen::fixNames, transUnit );
376	PASS( "Gen Init", InitTweak::genInit, transUnit );
377	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples, transUnit );
378
379	if ( libcfap ) {
380	// Generate the bodies of cfa library functions.
381	LibCfa::makeLibCfa( transUnit );
382	} // if
383
384	if ( declstatsp ) {
385	printDeclStats( transUnit );
386	return EXIT_SUCCESS;
387	} // if
388
389	DUMP( bresolvep, std::move( transUnit ) );
390
391	if ( resolvprotop ) {
392	dumpAsResolverProto( transUnit );
393	return EXIT_SUCCESS;
394	} // if
395
396	PASS( "Resolve", ResolvExpr::resolve, transUnit );
397	DUMP( exprp, std::move( transUnit ) );
398
399	PASS( "Fix Init", InitTweak::fix, transUnit, buildingLibrary() );
400
401	// fix ObjectDecl - replaces ConstructorInit nodes
402	DUMP( ctorinitp, std::move( transUnit ) );
403
404	// Currently not working due to unresolved issues with UniqueExpr
405	PASS( "Expand Unique Expr", Tuples::expandUniqueExpr, transUnit ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused
406
407	PASS( "Translate Tries", ControlStruct::translateTries, transUnit );
408	PASS( "Gen Waitfor", Concurrency::generateWaitFor, transUnit );
409
410	// Needs to happen before tuple types are expanded.
411	PASS( "Convert Specializations", GenPoly::convertSpecializations, transUnit );
412
413	PASS( "Expand Tuples", Tuples::expandTuples, transUnit );
414	DUMP( tuplep, std::move( transUnit ) );
415
416	// Must come after Translate Tries.
417	PASS( "Virtual Expand Casts", Virtual::expandCasts, transUnit );
418
419	PASS( "Instantiate Generics", GenPoly::instantiateGeneric, transUnit );
420	DUMP( genericsp, std::move( transUnit ) );
421
422	PASS( "Convert L-Value", GenPoly::convertLvalue, transUnit );
423
424	translationUnit = convert( std::move( transUnit ) );
425
426	DUMP( bboxp, translationUnit );
427	PASS( "Box", GenPoly::box, translationUnit );
428
429	PASS( "Link-Once", CodeGen::translateLinkOnce, translationUnit );
430
431	// Code has been lowered to C, now we can start generation.
432
433	DUMP( bcodegenp, translationUnit );
434
435	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
436	output = new ofstream( argv[ optind ] );
437	} // if
438
439	CodeTools::fillLocations( translationUnit );
440	PASS( "Code Gen", CodeGen::generate, translationUnit, *output, ! genproto, prettycodegenp, true, linemarks );
441
442	CodeGen::FixMain::fix( translationUnit, *output,
443	(PreludeDirector + "/bootloader.c").c_str() );
444	if ( output != &cout ) {
445	delete output;
446	} // if
447	} catch ( SemanticErrorException & e ) {
448	if ( errorp ) {
449	cerr << "---AST at error:---" << endl;
450	// We check which section the errors came from without looking at
451	// transUnit because std::move means it could look like anything.
452	if ( !translationUnit.empty() ) {
453	dump( translationUnit, cerr );
454	} else {
455	dump( std::move( transUnit ), cerr );
456	}
457	cerr << endl << "---End of AST, begin error message:---\n" << endl;
458	} // if
459	e.print();
460	if ( output != &cout ) {
461	delete output;
462	} // if
463	return EXIT_FAILURE;
464	} catch ( std::bad_alloc & ) {
465	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
466	backtrace( 1 );
467	abort();
468	} catch ( ... ) {
469	exception_ptr eptr = current_exception();
470	try {
471	if (eptr) {
472	rethrow_exception(eptr);
473	} else {
474	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
475	} // if
476	} catch( const exception & e ) {
477	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
478	} // try
479	return EXIT_FAILURE;
480	} // try
481
482	deleteAll( translationUnit );
483	Stats::print();
484	return EXIT_SUCCESS;
485	} // main
486
487
488	static const char optstring[] = ":c:ghilLmNnpdP:S:twW:D:";
489
490	enum { PreludeDir = 128 };
491	static struct option long_opts[] = {
492	{ "colors", required_argument, nullptr, 'c' },
493	{ "gdb", no_argument, nullptr, 'g' },
494	{ "help", no_argument, nullptr, 'h' },
495	{ "invariant", no_argument, nullptr, 'i' },
496	{ "libcfa", no_argument, nullptr, 'l' },
497	{ "linemarks", no_argument, nullptr, 'L' },
498	{ "no-main", no_argument, nullptr, 'm' },
499	{ "no-linemarks", no_argument, nullptr, 'N' },
500	{ "no-prelude", no_argument, nullptr, 'n' },
501	{ "prototypes", no_argument, nullptr, 'p' },
502	{ "deterministic-out", no_argument, nullptr, 'd' },
503	{ "print", required_argument, nullptr, 'P' },
504	{ "prelude-dir", required_argument, nullptr, PreludeDir },
505	{ "statistics", required_argument, nullptr, 'S' },
506	{ "tree", no_argument, nullptr, 't' },
507	{ "", no_argument, nullptr, 0 }, // -w
508	{ "", no_argument, nullptr, 0 }, // -W
509	{ "", no_argument, nullptr, 0 }, // -D
510	{ nullptr, 0, nullptr, 0 }
511	}; // long_opts
512
513	static const char * description[] = {
514	"diagnostic color: never, always, auto", // -c
515	"wait for gdb to attach", // -g
516	"print translator help message", // -h
517	"invariant checking during AST passes", // -i
518	"generate libcfa.c", // -l
519	"generate line marks", // -L
520	"do not replace main", // -m
521	"do not generate line marks", // -N
522	"do not read prelude", // -n
523	"do not generate prelude prototypes => prelude not printed", // -p
524	"only print deterministic output", // -d
525	"print", // -P
526	"<directory> prelude directory for debug/nodebug", // no flag
527	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
528	"building cfa standard lib", // -t
529	"", // -w
530	"", // -W
531	"", // -D
532	}; // description
533
534	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
535
536	static struct Printopts {
537	const char * name;
538	int & flag;
539	int val;
540	const char * descript;
541	} printopts[] = {
542	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
543	{ "asterr", errorp, true, "print AST on error" },
544	{ "declstats", declstatsp, true, "code property statistics" },
545	{ "parse", yydebug, true, "yacc (parsing) debug information" },
546	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
547	{ "rproto", resolvprotop, true, "resolver-proto instance" },
548	{ "rsteps", resolvep, true, "print resolver steps" },
549	// code dumps
550	{ "ast", astp, true, "print AST after parsing" },
551	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
552	{ "symevt", symtabp, true, "print AST after symbol table events" },
553	{ "altexpr", expraltp, true, "print alternatives for expressions" },
554	{ "astdecl", validp, true, "print AST after declaration validation pass" },
555	{ "resolver", bresolvep, true, "print AST before resolver step" },
556	{ "astexpr", exprp, true, "print AST after expression analysis" },
557	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
558	{ "tuple", tuplep, true, "print AST after tuple expansion" },
559	{ "astgen", genericsp, true, "print AST after instantiate generics" },
560	{ "box", bboxp, true, "print AST before box step" },
561	{ "codegen", bcodegenp, true, "print AST before code generation" },
562	};
563	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
564
565	static void usage( char * argv[] ) {
566	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
567	int i = 0, j = 1; // j skips starting colon
568	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
569	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
570	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
571	cout << " -" << optstring[j] << ",";
572	} else { // no flag
573	j -= 1; // compensate
574	cout << " ";
575	} // if
576	cout << " --" << left << setw(12) << long_opts[i].name << " ";
577	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
578	cout << "one of: " << endl;
579	for ( int i = 0; i < printoptsSize; i += 1 ) {
580	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
581	} // for
582	} else {
583	cout << description[i] << endl;
584	} // if
585	} // if
586	if ( optstring[j + 1] == ':' ) j += 1;
587	} // for
588	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
589	exit( EXIT_FAILURE );
590	} // usage
591
592	static void parse_cmdline( int argc, char * argv[] ) {
593	opterr = 0; // (global) prevent getopt from printing error messages
594
595	bool Wsuppress = false, Werror = false;
596	int c;
597	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
598	switch ( c ) {
599	case 'c': // diagnostic colors
600	if ( strcmp( optarg, "always" ) == 0 ) {
601	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
602	} else if ( strcmp( optarg, "never" ) == 0 ) {
603	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
604	} else if ( strcmp( optarg, "auto" ) == 0 ) {
605	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
606	} // if
607	break;
608	case 'h': // help message
609	usage( argv ); // no return
610	break;
611	case 'i': // invariant checking
612	invariant = true;
613	break;
614	case 'l': // generate libcfa.c
615	libcfap = true;
616	break;
617	case 'L': // generate line marks
618	linemarks = true;
619	break;
620	case 'm': // do not replace main
621	nomainp = true;
622	break;
623	case 'N': // do not generate line marks
624	linemarks = false;
625	break;
626	case 'n': // do not read prelude
627	nopreludep = true;
628	break;
629	case 'p': // generate prototypes for prelude functions
630	genproto = true;
631	break;
632	case 'd': // don't print non-deterministic output
633	deterministic_output = true;
634	break;
635	case 'P': // print options
636	for ( int i = 0;; i += 1 ) {
637	if ( i == printoptsSize ) {
638	cout << "Unknown --print option " << optarg << endl;
639	goto Default;
640	} // if
641	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
642	printopts[i].flag = printopts[i].val;
643	break;
644	} // if
645	} // for
646	break;
647	case PreludeDir: // prelude directory for debug/nodebug, hidden
648	PreludeDirector = optarg;
649	break;
650	case 'S': // enable profiling information, argument comma separated list of names
651	Stats::parse_params( optarg );
652	break;
653	case 't': // building cfa stdlib
654	treep = true;
655	break;
656	case 'g': // wait for gdb
657	waiting_for_gdb = true;
658	break;
659	case 'w': // suppress all warnings, hidden
660	Wsuppress = true;
661	break;
662	case 'W': // coordinate gcc -W with CFA, hidden
663	if ( strcmp( optarg, "all" ) == 0 ) {
664	SemanticWarning_EnableAll();
665	} else if ( strcmp( optarg, "error" ) == 0 ) {
666	Werror = true;
667	} else {
668	char * warning = optarg;
669	Severity s;
670	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
671	warning += 3;
672	s = Severity::Suppress;
673	} else {
674	s = Severity::Warn;
675	} // if
676	SemanticWarning_Set( warning, s );
677	} // if
678	break;
679	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
680	break;
681	case '?': // unknown option
682	if ( optopt ) { // short option ?
683	cout << "Unknown option -" << (char)optopt << endl;
684	} else {
685	cout << "Unknown option " << argv[optind - 1] << endl;
686	} // if
687	goto Default;
688	case ':': // missing option
689	if ( optopt ) { // short option ?
690	cout << "Missing option for -" << (char)optopt << endl;
691	} else {
692	cout << "Missing option for " << argv[optind - 1] << endl;
693	} // if
694	goto Default;
695	Default:
696	default:
697	usage( argv ); // no return
698	} // switch
699	} // while
700
701	if ( Werror ) {
702	SemanticWarning_WarningAsError();
703	} // if
704	if ( Wsuppress ) {
705	SemanticWarning_SuppressAll();
706	} // if
707	// for ( const auto w : WarningFormats ) {
708	// cout << w.name << ' ' << (int)w.severity << endl;
709	// } // for
710	} // parse_cmdline
711
712	static bool notPrelude( Declaration * decl ) {
713	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
714	} // notPrelude
715
716	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
717	list< Declaration * > decls;
718
719	if ( genproto ) {
720	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
721	} else {
722	decls = translationUnit;
723	} // if
724
725	// depending on commandline options, either generate code or dump the AST
726	if ( codegenp ) {
727	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
728	} else {
729	printAll( decls, out );
730	} // if
731	deleteAll( translationUnit );
732	} // dump
733
734	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
735	std::list< Declaration * > translationUnit = convert( std::move( transUnit ) );
736	dump( translationUnit, out );
737	}
738
739	// Local Variables: //
740	// tab-width: 4 //
741	// mode: c++ //
742	// compile-command: "make install" //
743	// End: //

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