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source: src/main.cc @ 7e13b11

Last change on this file since 7e13b11 was dacd2c19, checked in by Andrew Beach <ajbeach@…>, 5 months ago
Added Peter's fix to ensure syscall argument is initialized. I did check it against valgrind.
Property mode set to `100644`
File size: 28.0 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 : Peter A. Buhr
12	// Last Modified On : Wed Nov 1 21:12:58 2023
13	// Update Count : 690
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/Pass.hpp" // for pass_visitor_stats
32	#include "AST/Print.hpp" // for printAll
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 "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
42	#include "Common/DeclStats.hpp" // for printDeclStats
43	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
44	#include "Common/Stats.h" // for Stats
45	#include "Common/utility.h" // for deleteAll, filter, printAll
46	#include "Concurrency/Actors.hpp" // for implementActors
47	#include "Concurrency/Corun.hpp" // for implementCorun
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/EraseWith.hpp" // for eraseWith
65	#include "ResolvExpr/Resolver.h" // for resolve
66	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
67	#include "Validate/Autogen.hpp" // for autogenerateRoutines
68	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
69	#include "Validate/EliminateTypedef.hpp" // for eliminateTypedef
70	#include "Validate/EnumAndPointerDecay.hpp" // for decayEnumsAndPointers
71	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
72	#include "Validate/FixQualifiedTypes.hpp" // for fixQualifiedTypes
73	#include "Validate/FixReturnTypes.hpp" // for fixReturnTypes
74	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
75	#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
76	#include "Validate/HoistStruct.hpp" // for hoistStruct
77	#include "Validate/HoistTypeDecls.hpp" // for hoistTypeDecls
78	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
79	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
80	#include "Validate/LinkInstanceTypes.hpp" // for linkInstanceTypes
81	#include "Validate/ReplaceTypedef.hpp" // for replaceTypedef
82	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
83	#include "Validate/VerifyCtorDtorAssign.hpp" // for verifyCtorDtorAssign
84	#include "Validate/ReplacePseudoFunc.hpp" // for replacePseudoFunc
85	#include "Virtual/ExpandCasts.h" // for expandCasts
86	#include "Virtual/VirtualDtor.hpp" // for implementVirtDtors
87
88	using namespace std;
89
90	static void NewPass( const char * const name ) {
91	Stats::Heap::newPass( name );
92	using namespace Stats::Counters;
93	{
94	static auto group = build<CounterGroup>( "Pass Visitor Template" );
95	auto pass = build<CounterGroup>( name, group );
96	ast::pass_visitor_stats.depth = 0;
97	ast::pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
98	ast::pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
99	}
100	}
101
102	// Helpers for checkInvariant:
103	void checkInvariants( std::list< Declaration * > & ) {}
104	using ast::checkInvariants;
105
106	#define PASS( name, pass, unit, ... ) \
107	if ( errorp ) { cerr << name << endl; } \
108	NewPass(name); \
109	Stats::Time::StartBlock(name); \
110	pass(unit,##__VA_ARGS__); \
111	Stats::Time::StopBlock(); \
112	if ( invariant ) { \
113	checkInvariants(unit); \
114	}
115
116	#define DUMP( cond, unit ) \
117	if ( cond ) { \
118	dump(unit); \
119	return EXIT_SUCCESS; \
120	}
121
122	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
123
124	static string PreludeDirector = "";
125
126	static void parse_cmdline( int argc, char * argv[] );
127	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
128
129	static void backtrace( int start ) { // skip first N stack frames
130	enum { Frames = 50, }; // maximum number of stack frames
131	void * array[Frames];
132	size_t size = ::backtrace( array, Frames );
133	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
134
135	*index( messages[0], '(' ) = '\0'; // find executable name
136	cerr << "Stack back trace for: " << messages[0] << endl;
137
138	// skip last 2 stack frames after main
139	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
140	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
141
142	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
143	if ( *p == '(' ) {
144	mangled_name = p;
145	} else if ( *p == '+' ) {
146	offset_begin = p;
147	} else if ( *p == ')' ) {
148	offset_end = p;
149	break;
150	} // if
151	} // for
152
153	// if line contains symbol, attempt to demangle
154	int frameNo = i - start;
155	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
156	*mangled_name++ = '\0'; // delimit strings
157	*offset_begin++ = '\0';
158	*offset_end++ = '\0';
159
160	int status;
161	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
162	// bug in __cxa_demangle for single-character lower-case non-mangled names
163	if ( status == 0 ) { // demangling successful ?
164	cerr << "(" << frameNo << ") " << messages[i] << " : "
165	<< real_name << "+" << offset_begin << offset_end << endl;
166	} else { // otherwise, output mangled name
167	cerr << "(" << frameNo << ") " << messages[i] << " : "
168	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
169	} // if
170
171	free( real_name );
172	} else { // otherwise, print the whole line
173	cerr << "(" << frameNo << ") " << messages[i] << endl;
174	} // if
175	} // for
176
177	free( messages );
178	} // backtrace
179
180	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
181
182	static void _Signal(struct sigaction & act, int sig, int flags ) {
183	sigemptyset( &act.sa_mask );
184	act.sa_flags = flags;
185
186	if ( sigaction( sig, &act, nullptr ) == -1 ) {
187	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
188	_exit( EXIT_FAILURE );
189	} // if
190	}
191
192	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
193	struct sigaction act;
194	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
195	_Signal(act, sig, flags);
196	} // Signal
197
198	static void Signal( int sig, void (* handler)(int), int flags ) {
199	struct sigaction act;
200	act.sa_handler = handler;
201	_Signal(act, sig, flags);
202	} // Signal
203
204	static void sigSegvBusHandler( SIGPARMS ) {
205	if ( sfp->si_addr == nullptr ) {
206	cerr << "Null pointer (nullptr) dereference." << endl;
207	} else {
208	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
209	<< "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;
210	} // if
211	backtrace( 2 ); // skip first 2 stack frames
212	abort(); // cause core dump for debugging
213	} // sigSegvBusHandler
214
215	static void sigFpeHandler( SIGPARMS ) {
216	const char * msg;
217
218	switch ( sfp->si_code ) {
219	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
220	case FPE_FLTOVF: msg = "overflow"; break;
221	case FPE_FLTUND: msg = "underflow"; break;
222	case FPE_FLTRES: msg = "inexact result"; break;
223	case FPE_FLTINV: msg = "invalid operation"; break;
224	default: msg = "unknown";
225	} // choose
226	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
227	<< "Possible cause is constant-expression evaluation invalid." << endl;
228	backtrace( 2 ); // skip first 2 stack frames
229	abort(); // cause core dump for debugging
230	} // sigFpeHandler
231
232	static void sigAbortHandler( SIGPARMS ) {
233	backtrace( 6 ); // skip first 6 stack frames
234	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
235	raise( SIGABRT ); // reraise SIGABRT
236	} // sigAbortHandler
237
238	int main( int argc, char * argv[] ) {
239	FILE * input; // use FILE rather than istream because yyin is FILE
240	ostream * output = & cout;
241	ast::TranslationUnit transUnit;
242
243	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
244	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
245	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
246	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
247
248	// cout << "main" << endl;
249	// for ( int i = 0; i < argc; i += 1 ) {
250	// cout << '\t' << argv[i] << endl;
251	// } // for
252
253	parse_cmdline( argc, argv ); // process command-line arguments
254
255	if ( waiting_for_gdb ) {
256	cerr << "Waiting for gdb" << endl;
257	cerr << "run :" << endl;
258	cerr << " gdb attach " << getpid() << endl;
259	raise(SIGSTOP);
260	} // if
261
262	try {
263	// choose to read the program from a file or stdin
264	if ( optind < argc ) { // any commands after the flags ? => input file name
265	input = fopen( argv[ optind ], "r" );
266	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
267	optind += 1;
268	} else { // no input file name
269	input = stdin;
270	} // if
271
272	Stats::Time::StartGlobal();
273	NewPass("Parse");
274	Stats::Time::StartBlock("Parse");
275
276	// read in the builtins, extras, and the prelude
277	if ( ! nopreludep ) { // include gcc builtins
278	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
279
280	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
281
282	// Read to gcc builtins, if not generating the cfa library
283	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cfa").c_str(), "r" );
284	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
285	parse( gcc_builtins, ast::Linkage::Compiler );
286
287	// read the extra prelude in, if not generating the cfa library
288	FILE * extras = fopen( (PreludeDirector + "/extras.cfa").c_str(), "r" );
289	assertf( extras, "cannot open extras.cf\n" );
290	parse( extras, ast::Linkage::BuiltinC );
291	if ( ! libcfap ) {
292	// read the prelude in, if not generating the cfa library
293	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
294	assertf( prelude, "cannot open prelude.cfa\n" );
295	parse( prelude, ast::Linkage::Intrinsic );
296
297	// Read to cfa builtins, if not generating the cfa library
298	FILE * builtins = fopen( (PreludeDirector + "/builtins.cfa").c_str(), "r" );
299	assertf( builtins, "cannot open builtins.cf\n" );
300	parse( builtins, ast::Linkage::BuiltinCFA );
301	} // if
302	} // if
303
304	parse( input, libcfap ? ast::Linkage::Intrinsic : ast::Linkage::Cforall, yydebug );
305
306	transUnit = buildUnit();
307
308	DUMP( astp, std::move( transUnit ) );
309
310	Stats::Time::StopBlock();
311
312	PASS( "Hoist Type Decls", Validate::hoistTypeDecls, transUnit );
313
314	PASS( "Translate Exception Declarations", ControlStruct::translateExcept, transUnit );
315	DUMP( exdeclp, std::move( transUnit ) );
316	PASS( "Verify Ctor, Dtor & Assign", Validate::verifyCtorDtorAssign, transUnit );
317	PASS( "Replace Typedefs", Validate::replaceTypedef, transUnit );
318	PASS( "Fix Return Types", Validate::fixReturnTypes, transUnit );
319	PASS( "Enum and Pointer Decay", Validate::decayEnumsAndPointers, transUnit );
320
321	PASS( "Link Instance Types", Validate::linkInstanceTypes, transUnit );
322
323	PASS( "Forall Pointer Decay", Validate::decayForallPointers, transUnit );
324	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes, transUnit );
325
326	PASS( "Eliminate Typedef", Validate::eliminateTypedef, transUnit );
327	PASS( "Hoist Struct", Validate::hoistStruct, transUnit );
328	PASS( "Validate Generic Parameters", Validate::fillGenericParameters, transUnit );
329	PASS( "Translate Dimensions", Validate::translateDimensionParameters, transUnit );
330	PASS( "Check Function Returns", Validate::checkReturnStatements, transUnit );
331	PASS( "Fix Return Statements", InitTweak::fixReturnStatements, transUnit );
332	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords, transUnit );
333	PASS( "Fix Unique Ids", Validate::fixUniqueIds, transUnit );
334	PASS( "Implement Corun", Concurrency::implementCorun, transUnit );
335	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls, transUnit );
336
337	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines, transUnit );
338
339	PASS( "Implement Actors", Concurrency::implementActors, transUnit );
340	PASS( "Implement Virtual Destructors", Virtual::implementVirtDtors, transUnit );
341	PASS( "Implement Mutex", Concurrency::implementMutex, transUnit );
342	PASS( "Implement Thread Start", Concurrency::implementThreadStarter, transUnit );
343	PASS( "Compound Literal", Validate::handleCompoundLiterals, transUnit );
344	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer, transUnit );
345	PASS( "Find Global Decls", Validate::findGlobalDecls, transUnit );
346	PASS( "Fix Label Address", Validate::fixLabelAddresses, transUnit );
347
348	if ( symtabp ) {
349	return EXIT_SUCCESS;
350	} // if
351
352	if ( expraltp ) {
353	ResolvExpr::printCandidates( transUnit );
354	return EXIT_SUCCESS;
355	} // if
356
357	DUMP( validp, std::move( transUnit ) );
358
359	PASS( "Translate Throws", ControlStruct::translateThrows, transUnit );
360	PASS( "Fix Labels", ControlStruct::fixLabels, transUnit );
361	PASS( "Implement Waituntil", Concurrency::generateWaitUntil, transUnit );
362	PASS( "Fix Names", CodeGen::fixNames, transUnit );
363	PASS( "Gen Init", InitTweak::genInit, transUnit );
364	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples, transUnit );
365
366	if ( libcfap ) {
367	// Generate the bodies of cfa library functions.
368	LibCfa::makeLibCfa( transUnit );
369	} // if
370
371	if ( declstatsp ) {
372	printDeclStats( transUnit );
373	return EXIT_SUCCESS;
374	} // if
375
376	DUMP( bresolvep, std::move( transUnit ) );
377
378	if ( resolvprotop ) {
379	dumpAsResolverProto( transUnit );
380	return EXIT_SUCCESS;
381	} // if
382
383	PASS( "Resolve", ResolvExpr::resolve, transUnit );
384	DUMP( exprp, std::move( transUnit ) );
385	PASS( "Replace Pseudo Func", Validate::replacePseudoFunc, transUnit );
386	DUMP( reppseu, std::move( transUnit ) );
387	PASS( "Fix Init", InitTweak::fix, transUnit, buildingLibrary() );
388	PASS( "Erase With", ResolvExpr::eraseWith, transUnit );
389
390	// fix ObjectDecl - replaces ConstructorInit nodes
391	DUMP( ctorinitp, std::move( transUnit ) );
392
393	// Currently not working due to unresolved issues with UniqueExpr
394	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
395
396	PASS( "Translate Tries", ControlStruct::translateTries, transUnit );
397	PASS( "Gen Waitfor", Concurrency::generateWaitFor, transUnit );
398	PASS( "Fix Main Linkage", CodeGen::fixMainLinkage, transUnit, !nomainp );
399
400	// Needs to happen before tuple types are expanded.
401	PASS( "Convert Specializations", GenPoly::convertSpecializations, transUnit );
402
403	PASS( "Expand Tuples", Tuples::expandTuples, transUnit );
404	DUMP( tuplep, std::move( transUnit ) );
405
406	// Must come after Translate Tries.
407	PASS( "Virtual Expand Casts", Virtual::expandCasts, transUnit );
408
409	PASS( "Instantiate Generics", GenPoly::instantiateGeneric, transUnit );
410	DUMP( genericsp, std::move( transUnit ) );
411
412	PASS( "Convert L-Value", GenPoly::convertLvalue, transUnit );
413	DUMP( bboxp, std::move( transUnit ) );
414	PASS( "Box", GenPoly::box, transUnit );
415	PASS( "Link-Once", CodeGen::translateLinkOnce, transUnit );
416
417	// Code has been lowered to C, now we can start generation.
418
419	DUMP( bcodegenp, std::move( transUnit ) );
420
421	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
422	output = new ofstream( argv[ optind ] );
423	} // if
424
425	PASS( "Code Gen", CodeGen::generate, transUnit, *output, !genproto, prettycodegenp, true, linemarks, false );
426	CodeGen::fixMainInvoke( transUnit, *output, (PreludeDirector + "/bootloader.c").c_str() );
427
428	if ( output != &cout ) {
429	delete output;
430	} // if
431	} catch ( SemanticErrorException & e ) {
432	if ( errorp ) {
433	cerr << "---AST at error:---" << endl;
434	dump( std::move( transUnit ), cerr );
435	cerr << endl << "---End of AST, begin error message:---\n" << endl;
436	} // if
437	e.print();
438	if ( output != &cout ) {
439	delete output;
440	} // if
441	return EXIT_FAILURE;
442	} catch ( std::bad_alloc & ) {
443	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
444	backtrace( 1 );
445	abort();
446	} catch ( ... ) {
447	exception_ptr eptr = current_exception();
448	try {
449	if (eptr) {
450	rethrow_exception(eptr);
451	} else {
452	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
453	} // if
454	} catch( const exception & e ) {
455	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
456	} // try
457	return EXIT_FAILURE;
458	} // try
459
460	Stats::print();
461	return EXIT_SUCCESS;
462	} // main
463
464
465	static const char optstring[] = ":c:ghilLmNnpdP:S:twW:D:";
466
467	enum { PreludeDir = 128 };
468	static struct option long_opts[] = {
469	{ "colors", required_argument, nullptr, 'c' },
470	{ "gdb", no_argument, nullptr, 'g' },
471	{ "help", no_argument, nullptr, 'h' },
472	{ "invariant", no_argument, nullptr, 'i' },
473	{ "libcfa", no_argument, nullptr, 'l' },
474	{ "linemarks", no_argument, nullptr, 'L' },
475	{ "no-main", no_argument, nullptr, 'm' },
476	{ "no-linemarks", no_argument, nullptr, 'N' },
477	{ "no-prelude", no_argument, nullptr, 'n' },
478	{ "prototypes", no_argument, nullptr, 'p' },
479	{ "deterministic-out", no_argument, nullptr, 'd' },
480	{ "print", required_argument, nullptr, 'P' },
481	{ "prelude-dir", required_argument, nullptr, PreludeDir },
482	{ "statistics", required_argument, nullptr, 'S' },
483	{ "tree", no_argument, nullptr, 't' },
484	{ "", no_argument, nullptr, 0 }, // -w
485	{ "", no_argument, nullptr, 0 }, // -W
486	{ "", no_argument, nullptr, 0 }, // -D
487	{ nullptr, 0, nullptr, 0 }
488	}; // long_opts
489
490	static const char * description[] = {
491	"diagnostic color: never, always, auto", // -c
492	"wait for gdb to attach", // -g
493	"print translator help message", // -h
494	"invariant checking during AST passes", // -i
495	"generate libcfa.c", // -l
496	"generate line marks", // -L
497	"do not replace main", // -m
498	"do not generate line marks", // -N
499	"do not read prelude", // -n
500	"do not generate prelude prototypes => prelude not printed", // -p
501	"only print deterministic output", // -d
502	"print", // -P
503	"<directory> prelude directory for debug/nodebug", // no flag
504	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
505	"building cfa standard lib", // -t
506	"", // -w
507	"", // -W
508	"", // -D
509	}; // description
510
511	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
512
513	static struct Printopts {
514	const char * name;
515	int & flag;
516	int val;
517	const char * descript;
518	} printopts[] = {
519	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
520	{ "asterr", errorp, true, "print AST on error" },
521	{ "declstats", declstatsp, true, "print code property statistics" },
522	{ "parse", yydebug, true, "print yacc (parsing) debug information" },
523	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
524	{ "rproto", resolvprotop, true, "resolver-proto instance" },
525	{ "rsteps", resolvep, true, "print resolver steps" },
526	// AST dumps
527	{ "ast", astp, true, "print AST after parsing" },
528	{ "excpdecl", exdeclp, true, "print AST after translating exception decls" },
529	{ "symevt", symtabp, true, "print AST after symbol table events" },
530	{ "expralt", expraltp, true, "print AST after expressions alternatives" },
531	{ "valdecl", validp, true, "print AST after declaration validation pass" },
532	{ "bresolver", bresolvep, true, "print AST before resolver step" },
533	{ "expranly", exprp, true, "print AST after expression analysis" },
534	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
535	{ "tuple", tuplep, true, "print AST after tuple expansion" },
536	{ "instgen", genericsp, true, "print AST after instantiate generics" },
537	{ "bbox", bboxp, true, "print AST before box pass" },
538	{ "bcodegen", bcodegenp, true, "print AST before code generation" },
539	{ "reppseu", reppseu, true, "print AST after replacing pseudo functions" }
540	};
541	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
542
543	static void usage( char * argv[] ) {
544	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
545	int i = 0, j = 1; // j skips starting colon
546	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
547	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
548	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
549	cout << " -" << optstring[j] << ",";
550	} else { // no flag
551	j -= 1; // compensate
552	cout << " ";
553	} // if
554	cout << " --" << left << setw(12) << long_opts[i].name << " ";
555	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
556	cout << "one of: " << endl;
557	for ( int i = 0; i < printoptsSize; i += 1 ) {
558	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
559	} // for
560	} else {
561	cout << description[i] << endl;
562	} // if
563	} // if
564	if ( optstring[j + 1] == ':' ) j += 1;
565	} // for
566	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
567	exit( EXIT_FAILURE );
568	} // usage
569
570	static void parse_cmdline( int argc, char * argv[] ) {
571	opterr = 0; // (global) prevent getopt from printing error messages
572
573	bool Wsuppress = false, Werror = false;
574	int c;
575	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
576	switch ( c ) {
577	case 'c': // diagnostic colors
578	if ( strcmp( optarg, "always" ) == 0 ) {
579	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
580	} else if ( strcmp( optarg, "never" ) == 0 ) {
581	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
582	} else if ( strcmp( optarg, "auto" ) == 0 ) {
583	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
584	} // if
585	break;
586	case 'h': // help message
587	usage( argv ); // no return
588	break;
589	case 'i': // invariant checking
590	invariant = true;
591	break;
592	case 'l': // generate libcfa.c
593	libcfap = true;
594	break;
595	case 'L': // generate line marks
596	linemarks = true;
597	break;
598	case 'm': // do not replace main
599	nomainp = true;
600	break;
601	case 'N': // do not generate line marks
602	linemarks = false;
603	break;
604	case 'n': // do not read prelude
605	nopreludep = true;
606	break;
607	case 'p': // generate prototypes for prelude functions
608	genproto = true;
609	break;
610	case 'd': // don't print non-deterministic output
611	deterministic_output = true;
612	break;
613	case 'P': // print options
614	for ( int i = 0;; i += 1 ) {
615	if ( i == printoptsSize ) {
616	cout << "Unknown --print option " << optarg << endl;
617	goto Default;
618	} // if
619	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
620	printopts[i].flag = printopts[i].val;
621	break;
622	} // if
623	} // for
624	break;
625	case PreludeDir: // prelude directory for debug/nodebug, hidden
626	PreludeDirector = optarg;
627	break;
628	case 'S': // enable profiling information, argument comma separated list of names
629	Stats::parse_params( optarg );
630	break;
631	case 't': // building cfa stdlib
632	treep = true;
633	break;
634	case 'g': // wait for gdb
635	waiting_for_gdb = true;
636	break;
637	case 'w': // suppress all warnings, hidden
638	Wsuppress = true;
639	break;
640	case 'W': // coordinate gcc -W with CFA, hidden
641	if ( strcmp( optarg, "all" ) == 0 ) {
642	SemanticWarning_EnableAll();
643	} else if ( strcmp( optarg, "error" ) == 0 ) {
644	Werror = true;
645	} else {
646	char * warning = optarg;
647	Severity s;
648	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
649	warning += 3;
650	s = Severity::Suppress;
651	} else {
652	s = Severity::Warn;
653	} // if
654	SemanticWarning_Set( warning, s );
655	} // if
656	break;
657	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
658	break;
659	case '?': // unknown option
660	if ( optopt ) { // short option ?
661	cout << "Unknown option -" << (char)optopt << endl;
662	} else {
663	cout << "Unknown option " << argv[optind - 1] << endl;
664	} // if
665	goto Default;
666	case ':': // missing option
667	if ( optopt ) { // short option ?
668	cout << "Missing option for -" << (char)optopt << endl;
669	} else {
670	cout << "Missing option for " << argv[optind - 1] << endl;
671	} // if
672	goto Default;
673	Default:
674	default:
675	usage( argv ); // no return
676	} // switch
677	} // while
678
679	if ( Werror ) {
680	SemanticWarning_WarningAsError();
681	} // if
682	if ( Wsuppress ) {
683	SemanticWarning_SuppressAll();
684	} // if
685	// for ( const auto w : WarningFormats ) {
686	// cout << w.name << ' ' << (int)w.severity << endl;
687	// } // for
688	} // parse_cmdline
689
690	static bool notPrelude( ast::ptr<ast::Decl> & decl ) {
691	return !decl->linkage.is_builtin;
692	}
693
694	static void dump( ast::TranslationUnit && unit, std::ostream & out ) {
695	// May filter out all prelude declarations.
696	if ( genproto ) {
697	std::list<ast::ptr<ast::Decl>> decls;
698	std::copy_if( unit.decls.begin(), unit.decls.end(),
699	std::back_inserter( decls ), notPrelude );
700	decls.swap( unit.decls );
701	}
702
703	// May print as full dump or as code generation.
704	if ( codegenp ) {
705	CodeGen::generate( unit, out, !genproto, prettycodegenp, false, false, false );
706	} else {
707	ast::printAll( out, unit.decls );
708	}
709	}
710
711	// Local Variables: //
712	// tab-width: 4 //
713	// mode: c++ //
714	// compile-command: "make install" //
715	// End: //

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