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source: src/main.cc @ d24be37a

ADTast-experimentalpthread-emulationqualifiedEnum

Last change on this file since d24be37a was 4ec9513, checked in by Andrew Beach <ajbeach@…>, 3 years ago
Converted validate C, including adding DimensionExpr? to the new ast.
Property mode set to `100644`
File size: 32.2 KB

Line
1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// main.cc --
8	//
9	// Author : Peter Buhr and Rob Schluntz
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Andrew Beach
12	// Last Modified On : Wed Apr 13 11:11:00 2022
13	// Update Count : 672
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/GenericParameter.hpp" // for fillGenericParameters, tr...
78	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
79	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
80	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
81	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
82	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
83	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
84	#include "Virtual/ExpandCasts.h" // for expandCasts
85
86	static void NewPass( const char * const name ) {
87	Stats::Heap::newPass( name );
88	using namespace Stats::Counters;
89	{
90	static auto group = build<CounterGroup>( "Pass Visitor" );
91	auto pass = build<CounterGroup>( name, group );
92	pass_visitor_stats.depth = 0;
93	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
94	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
95	}
96	{
97	static auto group = build<CounterGroup>( "Syntax Node" );
98	auto pass = build<CounterGroup>( name, group );
99	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
100	}
101	}
102
103	#define PASS( name, pass ) \
104	if ( errorp ) { cerr << name << endl; } \
105	NewPass(name); \
106	Stats::Time::StartBlock(name); \
107	pass; \
108	Stats::Time::StopBlock();
109
110	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
111	TypedefTable typedefTable;
112	DeclarationNode * parseTree = nullptr; // program parse tree
113
114	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
115
116	static string PreludeDirector = "";
117
118	static void parse_cmdline( int argc, char * argv[] );
119	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
120	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
121	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
122
123	static void backtrace( int start ) { // skip first N stack frames
124	enum { Frames = 50, }; // maximum number of stack frames
125	void * array[Frames];
126	size_t size = ::backtrace( array, Frames );
127	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
128
129	*index( messages[0], '(' ) = '\0'; // find executable name
130	cerr << "Stack back trace for: " << messages[0] << endl;
131
132	// skip last 2 stack frames after main
133	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
134	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
135
136	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
137	if ( *p == '(' ) {
138	mangled_name = p;
139	} else if ( *p == '+' ) {
140	offset_begin = p;
141	} else if ( *p == ')' ) {
142	offset_end = p;
143	break;
144	} // if
145	} // for
146
147	// if line contains symbol, attempt to demangle
148	int frameNo = i - start;
149	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
150	*mangled_name++ = '\0'; // delimit strings
151	*offset_begin++ = '\0';
152	*offset_end++ = '\0';
153
154	int status;
155	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
156	// bug in __cxa_demangle for single-character lower-case non-mangled names
157	if ( status == 0 ) { // demangling successful ?
158	cerr << "(" << frameNo << ") " << messages[i] << " : "
159	<< real_name << "+" << offset_begin << offset_end << endl;
160	} else { // otherwise, output mangled name
161	cerr << "(" << frameNo << ") " << messages[i] << " : "
162	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
163	} // if
164
165	free( real_name );
166	} else { // otherwise, print the whole line
167	cerr << "(" << frameNo << ") " << messages[i] << endl;
168	} // if
169	} // for
170
171	free( messages );
172	} // backtrace
173
174	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
175
176	static void _Signal(struct sigaction & act, int sig, int flags ) {
177	act.sa_flags = flags;
178
179	if ( sigaction( sig, &act, nullptr ) == -1 ) {
180	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
181	_exit( EXIT_FAILURE );
182	} // if
183	}
184
185	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
186	struct sigaction act;
187	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
188	_Signal(act, sig, flags);
189	} // Signal
190
191	static void Signal( int sig, void (* handler)(int), int flags ) {
192	struct sigaction act;
193	act.sa_handler = handler;
194	_Signal(act, sig, flags);
195	} // Signal
196
197	static void sigSegvBusHandler( SIGPARMS ) {
198	if ( sfp->si_addr == nullptr ) {
199	cerr << "Null pointer (nullptr) dereference." << endl;
200	} else {
201	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
202	<< "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;
203	} // if
204	backtrace( 2 ); // skip first 2 stack frames
205	abort(); // cause core dump for debugging
206	} // sigSegvBusHandler
207
208	static void sigFpeHandler( SIGPARMS ) {
209	const char * msg;
210
211	switch ( sfp->si_code ) {
212	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
213	case FPE_FLTOVF: msg = "overflow"; break;
214	case FPE_FLTUND: msg = "underflow"; break;
215	case FPE_FLTRES: msg = "inexact result"; break;
216	case FPE_FLTINV: msg = "invalid operation"; break;
217	default: msg = "unknown";
218	} // choose
219	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
220	<< "Possible cause is constant-expression evaluation invalid." << endl;
221	backtrace( 2 ); // skip first 2 stack frames
222	abort(); // cause core dump for debugging
223	} // sigFpeHandler
224
225	static void sigAbortHandler( SIGPARMS ) {
226	backtrace( 6 ); // skip first 6 stack frames
227	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
228	raise( SIGABRT ); // reraise SIGABRT
229	} // sigAbortHandler
230
231	int main( int argc, char * argv[] ) {
232	FILE * input; // use FILE rather than istream because yyin is FILE
233	ostream * output = & cout;
234	list< Declaration * > translationUnit;
235
236	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
237	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
238	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
239	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
240
241	// cout << "main" << endl;
242	// for ( int i = 0; i < argc; i += 1 ) {
243	// cout << '\t' << argv[i] << endl;
244	// } // for
245
246	parse_cmdline( argc, argv ); // process command-line arguments
247	CodeGen::FixMain::setReplaceMain( !nomainp );
248
249	if ( waiting_for_gdb ) {
250	cerr << "Waiting for gdb" << endl;
251	cerr << "run :" << endl;
252	cerr << " gdb attach " << getpid() << endl;
253	raise(SIGSTOP);
254	} // if
255
256	try {
257	// choose to read the program from a file or stdin
258	if ( optind < argc ) { // any commands after the flags ? => input file name
259	input = fopen( argv[ optind ], "r" );
260	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
261	optind += 1;
262	} else { // no input file name
263	input = stdin;
264	} // if
265
266	Stats::Time::StartGlobal();
267	NewPass("Parse");
268	Stats::Time::StartBlock("Parse");
269
270	// read in the builtins, extras, and the prelude
271	if ( ! nopreludep ) { // include gcc builtins
272	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
273
274	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
275
276	// Read to gcc builtins, if not generating the cfa library
277	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
278	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
279	parse( gcc_builtins, LinkageSpec::Compiler );
280
281	// read the extra prelude in, if not generating the cfa library
282	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
283	assertf( extras, "cannot open extras.cf\n" );
284	parse( extras, LinkageSpec::BuiltinC );
285
286	if ( ! libcfap ) {
287	// read the prelude in, if not generating the cfa library
288	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
289	assertf( prelude, "cannot open prelude.cfa\n" );
290	parse( prelude, LinkageSpec::Intrinsic );
291
292	// Read to cfa builtins, if not generating the cfa library
293	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
294	assertf( builtins, "cannot open builtins.cf\n" );
295	parse( builtins, LinkageSpec::BuiltinCFA );
296	} // if
297	} // if
298
299	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
300
301	if ( parsep ) {
302	parseTree->printList( cout );
303	delete parseTree;
304	return EXIT_SUCCESS;
305	} // if
306
307	buildList( parseTree, translationUnit );
308	delete parseTree;
309	parseTree = nullptr;
310
311	if ( astp ) {
312	dump( translationUnit );
313	return EXIT_SUCCESS;
314	} // if
315
316	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
317	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
318	// works okay for now.
319	CodeTools::fillLocations( translationUnit );
320	Stats::Time::StopBlock();
321
322	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
323	if ( exdeclp ) {
324	dump( translationUnit );
325	return EXIT_SUCCESS;
326	} // if
327
328	// add the assignment statement after the initialization of a type parameter
329	PASS( "Validate-A", SymTab::validate_A( translationUnit ) );
330	PASS( "Validate-B", SymTab::validate_B( translationUnit ) );
331
332	CodeTools::fillLocations( translationUnit );
333
334	if( useNewAST ) {
335	CodeTools::fillLocations( translationUnit );
336
337	if (Stats::Counters::enabled) {
338	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
339	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
340	}
341	auto transUnit = convert( move( translationUnit ) );
342
343	forceFillCodeLocations( transUnit );
344
345	// Check as early as possible. Can't happen before
346	// LinkReferenceToType, observed failing when attempted
347	// before eliminateTypedef
348	PASS( "Validate Generic Parameters", Validate::fillGenericParameters( transUnit ) );
349
350	PASS( "Translate Dimensions", Validate::translateDimensionParameters( transUnit ) );
351	PASS( "Check Function Returns", Validate::checkReturnStatements( transUnit ) );
352
353	// Must happen before Autogen.
354	PASS( "Fix Return Statements", InitTweak::fixReturnStatements( transUnit ) );
355
356	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords( transUnit ) );
357
358	// Must be after implement concurrent keywords; because uniqueIds
359	// must be set on declaration before resolution.
360	// Must happen before autogen routines are added.
361	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
362
363	// Must happen before autogen routines are added.
364	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
365
366	// Must be after enum and pointer decay.
367	// Must be before compound literals.
368	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
369
370	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
371	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
372	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
373	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
374	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
375	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
376
377	if ( symtabp ) {
378	return EXIT_SUCCESS;
379	} // if
380
381	if ( expraltp ) {
382	ResolvExpr::printCandidates( transUnit );
383	return EXIT_SUCCESS;
384	} // if
385
386	if ( validp ) {
387	dump( move( transUnit ) );
388	return EXIT_SUCCESS;
389	} // if
390
391	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
392	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
393	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
394	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
395	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
396
397	if ( libcfap ) {
398	// Generate the bodies of cfa library functions.
399	LibCfa::makeLibCfa( transUnit );
400	} // if
401
402	if ( declstatsp ) {
403	printDeclStats( transUnit );
404	return EXIT_SUCCESS;
405	} // if
406
407	if ( bresolvep ) {
408	dump( move( transUnit ) );
409	return EXIT_SUCCESS;
410	} // if
411
412	if ( resolvprotop ) {
413	dumpAsResolverProto( transUnit );
414	return EXIT_SUCCESS;
415	} // if
416
417	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
418	if ( exprp ) {
419	dump( move( transUnit ) );
420	return EXIT_SUCCESS;
421	} // if
422
423	forceFillCodeLocations( transUnit );
424
425	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
426
427	// fix ObjectDecl - replaces ConstructorInit nodes
428	if ( ctorinitp ) {
429	dump( move( transUnit ) );
430	return EXIT_SUCCESS;
431	} // if
432
433	// Currently not working due to unresolved issues with UniqueExpr
434	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
435
436	PASS( "Translate Tries" , ControlStruct::translateTries( transUnit ) );
437
438	translationUnit = convert( move( transUnit ) );
439	} else {
440	PASS( "Validate-C", SymTab::validate_C( translationUnit ) );
441	PASS( "Validate-D", SymTab::validate_D( translationUnit ) );
442	PASS( "Validate-E", SymTab::validate_E( translationUnit ) );
443	PASS( "Validate-F", SymTab::validate_F( translationUnit ) );
444
445	if ( symtabp ) {
446	deleteAll( translationUnit );
447	return EXIT_SUCCESS;
448	} // if
449
450	if ( expraltp ) {
451	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
452	acceptAll( translationUnit, printer );
453	return EXIT_SUCCESS;
454	} // if
455
456	if ( validp ) {
457	dump( translationUnit );
458	return EXIT_SUCCESS;
459	} // if
460
461	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
462	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
463	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
464	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
465	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
466
467	if ( libcfap ) {
468	// Generate the bodies of cfa library functions.
469	LibCfa::makeLibCfa( translationUnit );
470	} // if
471
472	if ( declstatsp ) {
473	CodeTools::printDeclStats( translationUnit );
474	deleteAll( translationUnit );
475	return EXIT_SUCCESS;
476	} // if
477
478	if ( bresolvep ) {
479	dump( translationUnit );
480	return EXIT_SUCCESS;
481	} // if
482
483	CodeTools::fillLocations( translationUnit );
484
485	if ( resolvprotop ) {
486	CodeTools::dumpAsResolvProto( translationUnit );
487	return EXIT_SUCCESS;
488	} // if
489
490	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
491	if ( exprp ) {
492	dump( translationUnit );
493	return EXIT_SUCCESS;
494	}
495
496	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
497
498	// fix ObjectDecl - replaces ConstructorInit nodes
499	if ( ctorinitp ) {
500	dump ( translationUnit );
501	return EXIT_SUCCESS;
502	} // if
503
504	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
505
506	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
507	}
508
509	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
510
511	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
512
513	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
514
515	if ( tuplep ) {
516	dump( translationUnit );
517	return EXIT_SUCCESS;
518	} // if
519
520	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
521
522	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
523	if ( genericsp ) {
524	dump( translationUnit );
525	return EXIT_SUCCESS;
526	} // if
527
528	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
529
530	if ( bboxp ) {
531	dump( translationUnit );
532	return EXIT_SUCCESS;
533	} // if
534	PASS( "Box", GenPoly::box( translationUnit ) );
535
536	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
537
538	// Code has been lowered to C, now we can start generation.
539
540	if ( bcodegenp ) {
541	dump( translationUnit );
542	return EXIT_SUCCESS;
543	} // if
544
545	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
546	output = new ofstream( argv[ optind ] );
547	} // if
548
549	CodeTools::fillLocations( translationUnit );
550	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
551
552	CodeGen::FixMain::fix( translationUnit, *output,
553	(PreludeDirector + "/bootloader.c").c_str() );
554	if ( output != &cout ) {
555	delete output;
556	} // if
557	} catch ( SemanticErrorException & e ) {
558	if ( errorp ) {
559	cerr << "---AST at error:---" << endl;
560	dump( translationUnit, cerr );
561	cerr << endl << "---End of AST, begin error message:---\n" << endl;
562	} // if
563	e.print();
564	if ( output != &cout ) {
565	delete output;
566	} // if
567	return EXIT_FAILURE;
568	} catch ( UnimplementedError & e ) {
569	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
570	if ( output != &cout ) {
571	delete output;
572	} // if
573	return EXIT_FAILURE;
574	} catch ( CompilerError & e ) {
575	cerr << "Compiler Error: " << e.get_what() << endl;
576	cerr << "(please report bugs to [REDACTED])" << endl;
577	if ( output != &cout ) {
578	delete output;
579	} // if
580	return EXIT_FAILURE;
581	} catch ( std::bad_alloc & ) {
582	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
583	backtrace( 1 );
584	abort();
585	} catch ( ... ) {
586	exception_ptr eptr = current_exception();
587	try {
588	if (eptr) {
589	rethrow_exception(eptr);
590	} else {
591	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
592	} // if
593	} catch( const exception & e ) {
594	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
595	} // try
596	return EXIT_FAILURE;
597	} // try
598
599	deleteAll( translationUnit );
600	Stats::print();
601	return EXIT_SUCCESS;
602	} // main
603
604
605	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
606
607	enum { PreludeDir = 128 };
608	static struct option long_opts[] = {
609	{ "colors", required_argument, nullptr, 'c' },
610	{ "gdb", no_argument, nullptr, 'g' },
611	{ "help", no_argument, nullptr, 'h' },
612	{ "libcfa", no_argument, nullptr, 'l' },
613	{ "linemarks", no_argument, nullptr, 'L' },
614	{ "no-main", no_argument, 0, 'm' },
615	{ "no-linemarks", no_argument, nullptr, 'N' },
616	{ "no-prelude", no_argument, nullptr, 'n' },
617	{ "prototypes", no_argument, nullptr, 'p' },
618	{ "deterministic-out", no_argument, nullptr, 'd' },
619	{ "old-ast", no_argument, nullptr, 'O'},
620	{ "new-ast", no_argument, nullptr, 'A'},
621	{ "print", required_argument, nullptr, 'P' },
622	{ "prelude-dir", required_argument, nullptr, PreludeDir },
623	{ "statistics", required_argument, nullptr, 'S' },
624	{ "tree", no_argument, nullptr, 't' },
625	{ "", no_argument, nullptr, 0 }, // -w
626	{ "", no_argument, nullptr, 0 }, // -W
627	{ "", no_argument, nullptr, 0 }, // -D
628	{ nullptr, 0, nullptr, 0 }
629	}; // long_opts
630
631	static const char * description[] = {
632	"diagnostic color: never, always, auto", // -c
633	"wait for gdb to attach", // -g
634	"print translator help message", // -h
635	"generate libcfa.c", // -l
636	"generate line marks", // -L
637	"do not replace main", // -m
638	"do not generate line marks", // -N
639	"do not read prelude", // -n
640	"do not generate prelude prototypes => prelude not printed", // -p
641	"only print deterministic output", // -d
642	"Use the old-ast", // -O
643	"Use the new-ast", // -A
644	"print", // -P
645	"<directory> prelude directory for debug/nodebug", // no flag
646	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
647	"building cfa standard lib", // -t
648	"", // -w
649	"", // -W
650	"", // -D
651	}; // description
652
653	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
654
655	static struct Printopts {
656	const char * name;
657	int & flag;
658	int val;
659	const char * descript;
660	} printopts[] = {
661	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
662	{ "asterr", errorp, true, "print AST on error" },
663	{ "declstats", declstatsp, true, "code property statistics" },
664	{ "parse", yydebug, true, "yacc (parsing) debug information" },
665	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
666	{ "rproto", resolvprotop, true, "resolver-proto instance" },
667	{ "rsteps", resolvep, true, "print resolver steps" },
668	{ "tree", parsep, true, "print parse tree" },
669	// code dumps
670	{ "ast", astp, true, "print AST after parsing" },
671	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
672	{ "symevt", symtabp, true, "print AST after symbol table events" },
673	{ "altexpr", expraltp, true, "print alternatives for expressions" },
674	{ "astdecl", validp, true, "print AST after declaration validation pass" },
675	{ "resolver", bresolvep, true, "print AST before resolver step" },
676	{ "astexpr", exprp, true, "print AST after expression analysis" },
677	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
678	{ "tuple", tuplep, true, "print AST after tuple expansion" },
679	{ "astgen", genericsp, true, "print AST after instantiate generics" },
680	{ "box", bboxp, true, "print AST before box step" },
681	{ "codegen", bcodegenp, true, "print AST before code generation" },
682	};
683	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
684
685	static void usage( char * argv[] ) {
686	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
687	int i = 0, j = 1; // j skips starting colon
688	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
689	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
690	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
691	cout << " -" << optstring[j] << ",";
692	} else { // no flag
693	j -= 1; // compensate
694	cout << " ";
695	} // if
696	cout << " --" << left << setw(12) << long_opts[i].name << " ";
697	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
698	cout << "one of: " << endl;
699	for ( int i = 0; i < printoptsSize; i += 1 ) {
700	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
701	} // for
702	} else {
703	cout << description[i] << endl;
704	} // if
705	} // if
706	if ( optstring[j + 1] == ':' ) j += 1;
707	} // for
708	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
709	exit( EXIT_FAILURE );
710	} // usage
711
712	static void parse_cmdline( int argc, char * argv[] ) {
713	opterr = 0; // (global) prevent getopt from printing error messages
714
715	bool Wsuppress = false, Werror = false;
716	int c;
717	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
718	switch ( c ) {
719	case 'c': // diagnostic colors
720	if ( strcmp( optarg, "always" ) == 0 ) {
721	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
722	} else if ( strcmp( optarg, "never" ) == 0 ) {
723	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
724	} else if ( strcmp( optarg, "auto" ) == 0 ) {
725	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
726	} // if
727	break;
728	case 'h': // help message
729	usage( argv ); // no return
730	break;
731	case 'l': // generate libcfa.c
732	libcfap = true;
733	break;
734	case 'L': // generate line marks
735	linemarks = true;
736	break;
737	case 'm': // do not replace main
738	nomainp = true;
739	break;
740	case 'N': // do not generate line marks
741	linemarks = false;
742	break;
743	case 'n': // do not read prelude
744	nopreludep = true;
745	break;
746	case 'p': // generate prototypes for prelude functions
747	genproto = true;
748	break;
749	case 'd': // don't print non-deterministic output
750	deterministic_output = true;
751	break;
752	case 'O': // don't print non-deterministic output
753	useNewAST = false;
754	break;
755	case 'A': // don't print non-deterministic output
756	useNewAST = true;
757	break;
758	case 'P': // print options
759	for ( int i = 0;; i += 1 ) {
760	if ( i == printoptsSize ) {
761	cout << "Unknown --print option " << optarg << endl;
762	goto Default;
763	} // if
764	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
765	printopts[i].flag = printopts[i].val;
766	break;
767	} // if
768	} // for
769	break;
770	case PreludeDir: // prelude directory for debug/nodebug, hidden
771	PreludeDirector = optarg;
772	break;
773	case 'S': // enable profiling information, argument comma separated list of names
774	Stats::parse_params( optarg );
775	break;
776	case 't': // building cfa stdlib
777	treep = true;
778	break;
779	case 'g': // wait for gdb
780	waiting_for_gdb = true;
781	break;
782	case 'w': // suppress all warnings, hidden
783	Wsuppress = true;
784	break;
785	case 'W': // coordinate gcc -W with CFA, hidden
786	if ( strcmp( optarg, "all" ) == 0 ) {
787	SemanticWarning_EnableAll();
788	} else if ( strcmp( optarg, "error" ) == 0 ) {
789	Werror = true;
790	} else {
791	char * warning = optarg;
792	Severity s;
793	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
794	warning += 3;
795	s = Severity::Suppress;
796	} else {
797	s = Severity::Warn;
798	} // if
799	SemanticWarning_Set( warning, s );
800	} // if
801	break;
802	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
803	break;
804	case '?': // unknown option
805	if ( optopt ) { // short option ?
806	cout << "Unknown option -" << (char)optopt << endl;
807	} else {
808	cout << "Unknown option " << argv[optind - 1] << endl;
809	} // if
810	goto Default;
811	case ':': // missing option
812	if ( optopt ) { // short option ?
813	cout << "Missing option for -" << (char)optopt << endl;
814	} else {
815	cout << "Missing option for " << argv[optind - 1] << endl;
816	} // if
817	goto Default;
818	Default:
819	default:
820	usage( argv ); // no return
821	} // switch
822	} // while
823
824	if ( Werror ) {
825	SemanticWarning_WarningAsError();
826	} // if
827	if ( Wsuppress ) {
828	SemanticWarning_SuppressAll();
829	} // if
830	// for ( const auto w : WarningFormats ) {
831	// cout << w.name << ' ' << (int)w.severity << endl;
832	// } // for
833	} // parse_cmdline
834
835	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
836	extern int yyparse( void );
837	extern FILE * yyin;
838	extern int yylineno;
839
840	::linkage = linkage; // set globals
841	yyin = input;
842	yylineno = 1;
843	int parseStatus = yyparse();
844
845	fclose( input );
846	if ( shouldExit \|\| parseStatus != 0 ) {
847	exit( parseStatus );
848	} // if
849	} // parse
850
851	static bool notPrelude( Declaration * decl ) {
852	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
853	} // notPrelude
854
855	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
856	list< Declaration * > decls;
857
858	if ( genproto ) {
859	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
860	} else {
861	decls = translationUnit;
862	} // if
863
864	// depending on commandline options, either generate code or dump the AST
865	if ( codegenp ) {
866	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
867	} else {
868	printAll( decls, out );
869	} // if
870	deleteAll( translationUnit );
871	} // dump
872
873	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
874	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
875	dump( translationUnit, out );
876	}
877
878	// Local Variables: //
879	// tab-width: 4 //
880	// mode: c++ //
881	// compile-command: "make install" //
882	// End: //

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