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source: src/main.cc @ f56101f

ADTast-experimentalpthread-emulationqualifiedEnum

Last change on this file since f56101f was 0c939dd, checked in by Andrew Beach <ajbeach@…>, 2 years ago
Removed extra include, it should compile again.
Property mode set to `100644`
File size: 32.8 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 Apr 29 9:52:00 2022
13	// Update Count : 673
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/DeclStats.h" // for printDeclStats
41	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
42	#include "CodeTools/TrackLoc.h" // for fillLocations
43	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
44	#include "Common/CompilerError.h" // for CompilerError
45	#include "Common/DeclStats.hpp" // for printDeclStats
46	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
47	#include "Common/Stats.h"
48	#include "Common/PassVisitor.h"
49	#include "Common/SemanticError.h" // for SemanticError
50	#include "Common/UnimplementedError.h" // for UnimplementedError
51	#include "Common/utility.h" // for deleteAll, filter, printAll
52	#include "Concurrency/Keywords.h" // for implementMutex, implement...
53	#include "Concurrency/Waitfor.h" // for generateWaitfor
54	#include "ControlStruct/ExceptDecl.h" // for translateExcept
55	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
56	#include "ControlStruct/FixLabels.hpp" // for fixLabels
57	#include "ControlStruct/HoistControlDecls.hpp" // hoistControlDecls
58	#include "ControlStruct/Mutate.h" // for mutate
59	#include "GenPoly/Box.h" // for box
60	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
61	#include "GenPoly/Lvalue.h" // for convertLvalue
62	#include "GenPoly/Specialize.h" // for convertSpecializations
63	#include "InitTweak/FixInit.h" // for fix
64	#include "InitTweak/GenInit.h" // for genInit
65	#include "MakeLibCfa.h" // for makeLibCfa
66	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
67	#include "Parser/TypedefTable.h" // for TypedefTable
68	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
69	#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
70	#include "ResolvExpr/Resolver.h" // for resolve
71	#include "SymTab/Validate.h" // for validate
72	#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
73	#include "SynTree/Declaration.h" // for Declaration
74	#include "SynTree/Visitor.h" // for acceptAll
75	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
76	#include "Validate/Autogen.hpp" // for autogenerateRoutines
77	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
78	#include "Validate/EliminateTypedef.hpp" // for eliminateTypedef
79	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
80	#include "Validate/FixQualifiedTypes.hpp" // for fixQualifiedTypes
81	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
82	#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
83	#include "Validate/HoistStruct.hpp" // for hoistStruct
84	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
85	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
86	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
87	#include "Virtual/ExpandCasts.h" // for expandCasts
88
89	static void NewPass( const char * const name ) {
90	Stats::Heap::newPass( name );
91	using namespace Stats::Counters;
92	{
93	static auto group = build<CounterGroup>( "Pass Visitor" );
94	auto pass = build<CounterGroup>( name, group );
95	pass_visitor_stats.depth = 0;
96	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
97	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
98	}
99	{
100	static auto group = build<CounterGroup>( "Syntax Node" );
101	auto pass = build<CounterGroup>( name, group );
102	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
103	}
104	}
105
106	#define PASS( name, pass ) \
107	if ( errorp ) { cerr << name << endl; } \
108	NewPass(name); \
109	Stats::Time::StartBlock(name); \
110	pass; \
111	Stats::Time::StopBlock();
112
113	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
114	TypedefTable typedefTable;
115	DeclarationNode * parseTree = nullptr; // program parse tree
116
117	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
118
119	static string PreludeDirector = "";
120
121	static void parse_cmdline( int argc, char * argv[] );
122	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
123	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
124	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
125
126	static void backtrace( int start ) { // skip first N stack frames
127	enum { Frames = 50, }; // maximum number of stack frames
128	void * array[Frames];
129	size_t size = ::backtrace( array, Frames );
130	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
131
132	*index( messages[0], '(' ) = '\0'; // find executable name
133	cerr << "Stack back trace for: " << messages[0] << endl;
134
135	// skip last 2 stack frames after main
136	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
137	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
138
139	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
140	if ( *p == '(' ) {
141	mangled_name = p;
142	} else if ( *p == '+' ) {
143	offset_begin = p;
144	} else if ( *p == ')' ) {
145	offset_end = p;
146	break;
147	} // if
148	} // for
149
150	// if line contains symbol, attempt to demangle
151	int frameNo = i - start;
152	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
153	*mangled_name++ = '\0'; // delimit strings
154	*offset_begin++ = '\0';
155	*offset_end++ = '\0';
156
157	int status;
158	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
159	// bug in __cxa_demangle for single-character lower-case non-mangled names
160	if ( status == 0 ) { // demangling successful ?
161	cerr << "(" << frameNo << ") " << messages[i] << " : "
162	<< real_name << "+" << offset_begin << offset_end << endl;
163	} else { // otherwise, output mangled name
164	cerr << "(" << frameNo << ") " << messages[i] << " : "
165	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
166	} // if
167
168	free( real_name );
169	} else { // otherwise, print the whole line
170	cerr << "(" << frameNo << ") " << messages[i] << endl;
171	} // if
172	} // for
173
174	free( messages );
175	} // backtrace
176
177	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
178
179	static void _Signal(struct sigaction & act, int sig, int flags ) {
180	act.sa_flags = flags;
181
182	if ( sigaction( sig, &act, nullptr ) == -1 ) {
183	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
184	_exit( EXIT_FAILURE );
185	} // if
186	}
187
188	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
189	struct sigaction act;
190	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
191	_Signal(act, sig, flags);
192	} // Signal
193
194	static void Signal( int sig, void (* handler)(int), int flags ) {
195	struct sigaction act;
196	act.sa_handler = handler;
197	_Signal(act, sig, flags);
198	} // Signal
199
200	static void sigSegvBusHandler( SIGPARMS ) {
201	if ( sfp->si_addr == nullptr ) {
202	cerr << "Null pointer (nullptr) dereference." << endl;
203	} else {
204	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
205	<< "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;
206	} // if
207	backtrace( 2 ); // skip first 2 stack frames
208	abort(); // cause core dump for debugging
209	} // sigSegvBusHandler
210
211	static void sigFpeHandler( SIGPARMS ) {
212	const char * msg;
213
214	switch ( sfp->si_code ) {
215	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
216	case FPE_FLTOVF: msg = "overflow"; break;
217	case FPE_FLTUND: msg = "underflow"; break;
218	case FPE_FLTRES: msg = "inexact result"; break;
219	case FPE_FLTINV: msg = "invalid operation"; break;
220	default: msg = "unknown";
221	} // choose
222	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
223	<< "Possible cause is constant-expression evaluation invalid." << endl;
224	backtrace( 2 ); // skip first 2 stack frames
225	abort(); // cause core dump for debugging
226	} // sigFpeHandler
227
228	static void sigAbortHandler( SIGPARMS ) {
229	backtrace( 6 ); // skip first 6 stack frames
230	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
231	raise( SIGABRT ); // reraise SIGABRT
232	} // sigAbortHandler
233
234	int main( int argc, char * argv[] ) {
235	FILE * input; // use FILE rather than istream because yyin is FILE
236	ostream * output = & cout;
237	list< Declaration * > translationUnit;
238
239	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
240	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
241	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
242	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
243
244	// cout << "main" << endl;
245	// for ( int i = 0; i < argc; i += 1 ) {
246	// cout << '\t' << argv[i] << endl;
247	// } // for
248
249	parse_cmdline( argc, argv ); // process command-line arguments
250	CodeGen::FixMain::setReplaceMain( !nomainp );
251
252	if ( waiting_for_gdb ) {
253	cerr << "Waiting for gdb" << endl;
254	cerr << "run :" << endl;
255	cerr << " gdb attach " << getpid() << endl;
256	raise(SIGSTOP);
257	} // if
258
259	try {
260	// choose to read the program from a file or stdin
261	if ( optind < argc ) { // any commands after the flags ? => input file name
262	input = fopen( argv[ optind ], "r" );
263	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
264	optind += 1;
265	} else { // no input file name
266	input = stdin;
267	} // if
268
269	Stats::Time::StartGlobal();
270	NewPass("Parse");
271	Stats::Time::StartBlock("Parse");
272
273	// read in the builtins, extras, and the prelude
274	if ( ! nopreludep ) { // include gcc builtins
275	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
276
277	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
278
279	// Read to gcc builtins, if not generating the cfa library
280	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
281	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
282	parse( gcc_builtins, LinkageSpec::Compiler );
283
284	// read the extra prelude in, if not generating the cfa library
285	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
286	assertf( extras, "cannot open extras.cf\n" );
287	parse( extras, LinkageSpec::BuiltinC );
288
289	if ( ! libcfap ) {
290	// read the prelude in, if not generating the cfa library
291	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
292	assertf( prelude, "cannot open prelude.cfa\n" );
293	parse( prelude, LinkageSpec::Intrinsic );
294
295	// Read to cfa builtins, if not generating the cfa library
296	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
297	assertf( builtins, "cannot open builtins.cf\n" );
298	parse( builtins, LinkageSpec::BuiltinCFA );
299	} // if
300	} // if
301
302	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
303
304	if ( parsep ) {
305	parseTree->printList( cout );
306	delete parseTree;
307	return EXIT_SUCCESS;
308	} // if
309
310	buildList( parseTree, translationUnit );
311	delete parseTree;
312	parseTree = nullptr;
313
314	if ( astp ) {
315	dump( translationUnit );
316	return EXIT_SUCCESS;
317	} // if
318
319	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
320	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
321	// works okay for now.
322	CodeTools::fillLocations( translationUnit );
323	Stats::Time::StopBlock();
324
325	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
326	if ( exdeclp ) {
327	dump( translationUnit );
328	return EXIT_SUCCESS;
329	} // if
330
331	// add the assignment statement after the initialization of a type parameter
332	PASS( "Validate-A", SymTab::validate_A( translationUnit ) );
333
334	// Must happen before auto-gen, because it uses the sized flag.
335	PASS( "Link Reference To Types", SymTab::linkReferenceToTypes( translationUnit ) );
336
337	CodeTools::fillLocations( translationUnit );
338
339	if( useNewAST ) {
340	CodeTools::fillLocations( translationUnit );
341
342	if (Stats::Counters::enabled) {
343	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
344	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
345	}
346	auto transUnit = convert( move( translationUnit ) );
347
348	forceFillCodeLocations( transUnit );
349
350	// Must happen after Link References To Types,
351	// because aggregate members are accessed.
352	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes( transUnit ) );
353
354	PASS( "Hoist Struct", Validate::hoistStruct( transUnit ) );
355	PASS( "Eliminate Typedef", Validate::eliminateTypedef( transUnit ) );
356
357	// Check as early as possible. Can't happen before
358	// LinkReferenceToType, observed failing when attempted
359	// before eliminateTypedef
360	PASS( "Validate Generic Parameters", Validate::fillGenericParameters( transUnit ) );
361
362	PASS( "Translate Dimensions", Validate::translateDimensionParameters( transUnit ) );
363	PASS( "Check Function Returns", Validate::checkReturnStatements( transUnit ) );
364
365	// Must happen before Autogen.
366	PASS( "Fix Return Statements", InitTweak::fixReturnStatements( transUnit ) );
367
368	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords( transUnit ) );
369
370	// Must be after implement concurrent keywords; because uniqueIds
371	// must be set on declaration before resolution.
372	// Must happen before autogen routines are added.
373	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
374
375	// Must happen before autogen routines are added.
376	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
377
378	// Must be after enum and pointer decay.
379	// Must be before compound literals.
380	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
381
382	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
383	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
384	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
385	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
386	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
387	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
388
389	if ( symtabp ) {
390	return EXIT_SUCCESS;
391	} // if
392
393	if ( expraltp ) {
394	ResolvExpr::printCandidates( transUnit );
395	return EXIT_SUCCESS;
396	} // if
397
398	if ( validp ) {
399	dump( move( transUnit ) );
400	return EXIT_SUCCESS;
401	} // if
402
403	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
404	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
405	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
406	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
407	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
408
409	if ( libcfap ) {
410	// Generate the bodies of cfa library functions.
411	LibCfa::makeLibCfa( transUnit );
412	} // if
413
414	if ( declstatsp ) {
415	printDeclStats( transUnit );
416	return EXIT_SUCCESS;
417	} // if
418
419	if ( bresolvep ) {
420	dump( move( transUnit ) );
421	return EXIT_SUCCESS;
422	} // if
423
424	if ( resolvprotop ) {
425	dumpAsResolverProto( transUnit );
426	return EXIT_SUCCESS;
427	} // if
428
429	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
430	if ( exprp ) {
431	dump( move( transUnit ) );
432	return EXIT_SUCCESS;
433	} // if
434
435	forceFillCodeLocations( transUnit );
436
437	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
438
439	// fix ObjectDecl - replaces ConstructorInit nodes
440	if ( ctorinitp ) {
441	dump( move( transUnit ) );
442	return EXIT_SUCCESS;
443	} // if
444
445	// Currently not working due to unresolved issues with UniqueExpr
446	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
447
448	PASS( "Translate Tries" , ControlStruct::translateTries( transUnit ) );
449
450	translationUnit = convert( move( transUnit ) );
451	} else {
452	PASS( "Validate-B", SymTab::validate_B( translationUnit ) );
453	PASS( "Validate-C", SymTab::validate_C( translationUnit ) );
454	PASS( "Validate-D", SymTab::validate_D( translationUnit ) );
455	PASS( "Validate-E", SymTab::validate_E( translationUnit ) );
456	PASS( "Validate-F", SymTab::validate_F( translationUnit ) );
457
458	if ( symtabp ) {
459	deleteAll( translationUnit );
460	return EXIT_SUCCESS;
461	} // if
462
463	if ( expraltp ) {
464	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
465	acceptAll( translationUnit, printer );
466	return EXIT_SUCCESS;
467	} // if
468
469	if ( validp ) {
470	dump( translationUnit );
471	return EXIT_SUCCESS;
472	} // if
473
474	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
475	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
476	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
477	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
478	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
479
480	if ( libcfap ) {
481	// Generate the bodies of cfa library functions.
482	LibCfa::makeLibCfa( translationUnit );
483	} // if
484
485	if ( declstatsp ) {
486	CodeTools::printDeclStats( translationUnit );
487	deleteAll( translationUnit );
488	return EXIT_SUCCESS;
489	} // if
490
491	if ( bresolvep ) {
492	dump( translationUnit );
493	return EXIT_SUCCESS;
494	} // if
495
496	CodeTools::fillLocations( translationUnit );
497
498	if ( resolvprotop ) {
499	CodeTools::dumpAsResolvProto( translationUnit );
500	return EXIT_SUCCESS;
501	} // if
502
503	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
504	if ( exprp ) {
505	dump( translationUnit );
506	return EXIT_SUCCESS;
507	}
508
509	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
510
511	// fix ObjectDecl - replaces ConstructorInit nodes
512	if ( ctorinitp ) {
513	dump ( translationUnit );
514	return EXIT_SUCCESS;
515	} // if
516
517	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
518
519	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
520	}
521
522	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
523
524	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
525
526	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
527
528	if ( tuplep ) {
529	dump( translationUnit );
530	return EXIT_SUCCESS;
531	} // if
532
533	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
534
535	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
536	if ( genericsp ) {
537	dump( translationUnit );
538	return EXIT_SUCCESS;
539	} // if
540
541	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
542
543	if ( bboxp ) {
544	dump( translationUnit );
545	return EXIT_SUCCESS;
546	} // if
547	PASS( "Box", GenPoly::box( translationUnit ) );
548
549	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
550
551	// Code has been lowered to C, now we can start generation.
552
553	if ( bcodegenp ) {
554	dump( translationUnit );
555	return EXIT_SUCCESS;
556	} // if
557
558	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
559	output = new ofstream( argv[ optind ] );
560	} // if
561
562	CodeTools::fillLocations( translationUnit );
563	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
564
565	CodeGen::FixMain::fix( translationUnit, *output,
566	(PreludeDirector + "/bootloader.c").c_str() );
567	if ( output != &cout ) {
568	delete output;
569	} // if
570	} catch ( SemanticErrorException & e ) {
571	if ( errorp ) {
572	cerr << "---AST at error:---" << endl;
573	dump( translationUnit, cerr );
574	cerr << endl << "---End of AST, begin error message:---\n" << endl;
575	} // if
576	e.print();
577	if ( output != &cout ) {
578	delete output;
579	} // if
580	return EXIT_FAILURE;
581	} catch ( UnimplementedError & e ) {
582	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
583	if ( output != &cout ) {
584	delete output;
585	} // if
586	return EXIT_FAILURE;
587	} catch ( CompilerError & e ) {
588	cerr << "Compiler Error: " << e.get_what() << endl;
589	cerr << "(please report bugs to [REDACTED])" << endl;
590	if ( output != &cout ) {
591	delete output;
592	} // if
593	return EXIT_FAILURE;
594	} catch ( std::bad_alloc & ) {
595	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
596	backtrace( 1 );
597	abort();
598	} catch ( ... ) {
599	exception_ptr eptr = current_exception();
600	try {
601	if (eptr) {
602	rethrow_exception(eptr);
603	} else {
604	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
605	} // if
606	} catch( const exception & e ) {
607	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
608	} // try
609	return EXIT_FAILURE;
610	} // try
611
612	deleteAll( translationUnit );
613	Stats::print();
614	return EXIT_SUCCESS;
615	} // main
616
617
618	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
619
620	enum { PreludeDir = 128 };
621	static struct option long_opts[] = {
622	{ "colors", required_argument, nullptr, 'c' },
623	{ "gdb", no_argument, nullptr, 'g' },
624	{ "help", no_argument, nullptr, 'h' },
625	{ "libcfa", no_argument, nullptr, 'l' },
626	{ "linemarks", no_argument, nullptr, 'L' },
627	{ "no-main", no_argument, 0, 'm' },
628	{ "no-linemarks", no_argument, nullptr, 'N' },
629	{ "no-prelude", no_argument, nullptr, 'n' },
630	{ "prototypes", no_argument, nullptr, 'p' },
631	{ "deterministic-out", no_argument, nullptr, 'd' },
632	{ "old-ast", no_argument, nullptr, 'O'},
633	{ "new-ast", no_argument, nullptr, 'A'},
634	{ "print", required_argument, nullptr, 'P' },
635	{ "prelude-dir", required_argument, nullptr, PreludeDir },
636	{ "statistics", required_argument, nullptr, 'S' },
637	{ "tree", no_argument, nullptr, 't' },
638	{ "", no_argument, nullptr, 0 }, // -w
639	{ "", no_argument, nullptr, 0 }, // -W
640	{ "", no_argument, nullptr, 0 }, // -D
641	{ nullptr, 0, nullptr, 0 }
642	}; // long_opts
643
644	static const char * description[] = {
645	"diagnostic color: never, always, auto", // -c
646	"wait for gdb to attach", // -g
647	"print translator help message", // -h
648	"generate libcfa.c", // -l
649	"generate line marks", // -L
650	"do not replace main", // -m
651	"do not generate line marks", // -N
652	"do not read prelude", // -n
653	"do not generate prelude prototypes => prelude not printed", // -p
654	"only print deterministic output", // -d
655	"Use the old-ast", // -O
656	"Use the new-ast", // -A
657	"print", // -P
658	"<directory> prelude directory for debug/nodebug", // no flag
659	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
660	"building cfa standard lib", // -t
661	"", // -w
662	"", // -W
663	"", // -D
664	}; // description
665
666	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
667
668	static struct Printopts {
669	const char * name;
670	int & flag;
671	int val;
672	const char * descript;
673	} printopts[] = {
674	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
675	{ "asterr", errorp, true, "print AST on error" },
676	{ "declstats", declstatsp, true, "code property statistics" },
677	{ "parse", yydebug, true, "yacc (parsing) debug information" },
678	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
679	{ "rproto", resolvprotop, true, "resolver-proto instance" },
680	{ "rsteps", resolvep, true, "print resolver steps" },
681	{ "tree", parsep, true, "print parse tree" },
682	// code dumps
683	{ "ast", astp, true, "print AST after parsing" },
684	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
685	{ "symevt", symtabp, true, "print AST after symbol table events" },
686	{ "altexpr", expraltp, true, "print alternatives for expressions" },
687	{ "astdecl", validp, true, "print AST after declaration validation pass" },
688	{ "resolver", bresolvep, true, "print AST before resolver step" },
689	{ "astexpr", exprp, true, "print AST after expression analysis" },
690	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
691	{ "tuple", tuplep, true, "print AST after tuple expansion" },
692	{ "astgen", genericsp, true, "print AST after instantiate generics" },
693	{ "box", bboxp, true, "print AST before box step" },
694	{ "codegen", bcodegenp, true, "print AST before code generation" },
695	};
696	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
697
698	static void usage( char * argv[] ) {
699	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
700	int i = 0, j = 1; // j skips starting colon
701	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
702	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
703	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
704	cout << " -" << optstring[j] << ",";
705	} else { // no flag
706	j -= 1; // compensate
707	cout << " ";
708	} // if
709	cout << " --" << left << setw(12) << long_opts[i].name << " ";
710	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
711	cout << "one of: " << endl;
712	for ( int i = 0; i < printoptsSize; i += 1 ) {
713	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
714	} // for
715	} else {
716	cout << description[i] << endl;
717	} // if
718	} // if
719	if ( optstring[j + 1] == ':' ) j += 1;
720	} // for
721	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
722	exit( EXIT_FAILURE );
723	} // usage
724
725	static void parse_cmdline( int argc, char * argv[] ) {
726	opterr = 0; // (global) prevent getopt from printing error messages
727
728	bool Wsuppress = false, Werror = false;
729	int c;
730	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
731	switch ( c ) {
732	case 'c': // diagnostic colors
733	if ( strcmp( optarg, "always" ) == 0 ) {
734	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
735	} else if ( strcmp( optarg, "never" ) == 0 ) {
736	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
737	} else if ( strcmp( optarg, "auto" ) == 0 ) {
738	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
739	} // if
740	break;
741	case 'h': // help message
742	usage( argv ); // no return
743	break;
744	case 'l': // generate libcfa.c
745	libcfap = true;
746	break;
747	case 'L': // generate line marks
748	linemarks = true;
749	break;
750	case 'm': // do not replace main
751	nomainp = true;
752	break;
753	case 'N': // do not generate line marks
754	linemarks = false;
755	break;
756	case 'n': // do not read prelude
757	nopreludep = true;
758	break;
759	case 'p': // generate prototypes for prelude functions
760	genproto = true;
761	break;
762	case 'd': // don't print non-deterministic output
763	deterministic_output = true;
764	break;
765	case 'O': // don't print non-deterministic output
766	useNewAST = false;
767	break;
768	case 'A': // don't print non-deterministic output
769	useNewAST = true;
770	break;
771	case 'P': // print options
772	for ( int i = 0;; i += 1 ) {
773	if ( i == printoptsSize ) {
774	cout << "Unknown --print option " << optarg << endl;
775	goto Default;
776	} // if
777	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
778	printopts[i].flag = printopts[i].val;
779	break;
780	} // if
781	} // for
782	break;
783	case PreludeDir: // prelude directory for debug/nodebug, hidden
784	PreludeDirector = optarg;
785	break;
786	case 'S': // enable profiling information, argument comma separated list of names
787	Stats::parse_params( optarg );
788	break;
789	case 't': // building cfa stdlib
790	treep = true;
791	break;
792	case 'g': // wait for gdb
793	waiting_for_gdb = true;
794	break;
795	case 'w': // suppress all warnings, hidden
796	Wsuppress = true;
797	break;
798	case 'W': // coordinate gcc -W with CFA, hidden
799	if ( strcmp( optarg, "all" ) == 0 ) {
800	SemanticWarning_EnableAll();
801	} else if ( strcmp( optarg, "error" ) == 0 ) {
802	Werror = true;
803	} else {
804	char * warning = optarg;
805	Severity s;
806	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
807	warning += 3;
808	s = Severity::Suppress;
809	} else {
810	s = Severity::Warn;
811	} // if
812	SemanticWarning_Set( warning, s );
813	} // if
814	break;
815	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
816	break;
817	case '?': // unknown option
818	if ( optopt ) { // short option ?
819	cout << "Unknown option -" << (char)optopt << endl;
820	} else {
821	cout << "Unknown option " << argv[optind - 1] << endl;
822	} // if
823	goto Default;
824	case ':': // missing option
825	if ( optopt ) { // short option ?
826	cout << "Missing option for -" << (char)optopt << endl;
827	} else {
828	cout << "Missing option for " << argv[optind - 1] << endl;
829	} // if
830	goto Default;
831	Default:
832	default:
833	usage( argv ); // no return
834	} // switch
835	} // while
836
837	if ( Werror ) {
838	SemanticWarning_WarningAsError();
839	} // if
840	if ( Wsuppress ) {
841	SemanticWarning_SuppressAll();
842	} // if
843	// for ( const auto w : WarningFormats ) {
844	// cout << w.name << ' ' << (int)w.severity << endl;
845	// } // for
846	} // parse_cmdline
847
848	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
849	extern int yyparse( void );
850	extern FILE * yyin;
851	extern int yylineno;
852
853	::linkage = linkage; // set globals
854	yyin = input;
855	yylineno = 1;
856	int parseStatus = yyparse();
857
858	fclose( input );
859	if ( shouldExit \|\| parseStatus != 0 ) {
860	exit( parseStatus );
861	} // if
862	} // parse
863
864	static bool notPrelude( Declaration * decl ) {
865	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
866	} // notPrelude
867
868	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
869	list< Declaration * > decls;
870
871	if ( genproto ) {
872	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
873	} else {
874	decls = translationUnit;
875	} // if
876
877	// depending on commandline options, either generate code or dump the AST
878	if ( codegenp ) {
879	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
880	} else {
881	printAll( decls, out );
882	} // if
883	deleteAll( translationUnit );
884	} // dump
885
886	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
887	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
888	dump( translationUnit, out );
889	}
890
891	// Local Variables: //
892	// tab-width: 4 //
893	// mode: c++ //
894	// compile-command: "make install" //
895	// End: //

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