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source: src/main.cc @ efcd8f2

ADTast-experimentalpthread-emulationqualifiedEnum

Last change on this file since efcd8f2 was 6a896b0, checked in by Andrew Beach <ajbeach@…>, 22 months ago
Translated the Exception Declaration pass.
Property mode set to `100644`
File size: 33.9 KB

Line
1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// main.cc --
8	//
9	// Author : Peter Buhr and Rob Schluntz
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Andrew Beach
12	// Last Modified On : Mon Jul 18 11:08:00 2022
13	// Update Count : 676
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 "SymTab/ValidateType.h" // for linkReferenceToTypes
73	#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
74	#include "SynTree/Declaration.h" // for Declaration
75	#include "SynTree/Visitor.h" // for acceptAll
76	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
77	#include "Validate/Autogen.hpp" // for autogenerateRoutines
78	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
79	#include "Validate/EliminateTypedef.hpp" // for eliminateTypedef
80	#include "Validate/EnumAndPointerDecay.hpp" // for decayEnumsAndPointers
81	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
82	#include "Validate/FixQualifiedTypes.hpp" // for fixQualifiedTypes
83	#include "Validate/FixReturnTypes.hpp" // for fixReturnTypes
84	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
85	#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
86	#include "Validate/HoistStruct.hpp" // for hoistStruct
87	#include "Validate/HoistTypeDecls.hpp" // for hoistTypeDecls
88	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
89	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
90	#include "Validate/LinkReferenceToTypes.hpp" // for linkReferenceToTypes
91	#include "Validate/ReplaceTypedef.hpp" // for replaceTypedef
92	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
93	#include "Validate/VerifyCtorDtorAssign.hpp" // for verifyCtorDtorAssign
94	#include "Virtual/ExpandCasts.h" // for expandCasts
95
96	static void NewPass( const char * const name ) {
97	Stats::Heap::newPass( name );
98	using namespace Stats::Counters;
99	{
100	static auto group = build<CounterGroup>( "Pass Visitor" );
101	auto pass = build<CounterGroup>( name, group );
102	pass_visitor_stats.depth = 0;
103	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
104	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
105	}
106	{
107	static auto group = build<CounterGroup>( "Syntax Node" );
108	auto pass = build<CounterGroup>( name, group );
109	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
110	}
111	}
112
113	#define PASS( name, pass ) \
114	if ( errorp ) { cerr << name << endl; } \
115	NewPass(name); \
116	Stats::Time::StartBlock(name); \
117	pass; \
118	Stats::Time::StopBlock();
119
120	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
121	TypedefTable typedefTable;
122	DeclarationNode * parseTree = nullptr; // program parse tree
123
124	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
125
126	static string PreludeDirector = "";
127
128	static void parse_cmdline( int argc, char * argv[] );
129	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
130	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
131	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
132
133	static void backtrace( int start ) { // skip first N stack frames
134	enum { Frames = 50, }; // maximum number of stack frames
135	void * array[Frames];
136	size_t size = ::backtrace( array, Frames );
137	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
138
139	*index( messages[0], '(' ) = '\0'; // find executable name
140	cerr << "Stack back trace for: " << messages[0] << endl;
141
142	// skip last 2 stack frames after main
143	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
144	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
145
146	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
147	if ( *p == '(' ) {
148	mangled_name = p;
149	} else if ( *p == '+' ) {
150	offset_begin = p;
151	} else if ( *p == ')' ) {
152	offset_end = p;
153	break;
154	} // if
155	} // for
156
157	// if line contains symbol, attempt to demangle
158	int frameNo = i - start;
159	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
160	*mangled_name++ = '\0'; // delimit strings
161	*offset_begin++ = '\0';
162	*offset_end++ = '\0';
163
164	int status;
165	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
166	// bug in __cxa_demangle for single-character lower-case non-mangled names
167	if ( status == 0 ) { // demangling successful ?
168	cerr << "(" << frameNo << ") " << messages[i] << " : "
169	<< real_name << "+" << offset_begin << offset_end << endl;
170	} else { // otherwise, output mangled name
171	cerr << "(" << frameNo << ") " << messages[i] << " : "
172	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
173	} // if
174
175	free( real_name );
176	} else { // otherwise, print the whole line
177	cerr << "(" << frameNo << ") " << messages[i] << endl;
178	} // if
179	} // for
180
181	free( messages );
182	} // backtrace
183
184	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
185
186	static void _Signal(struct sigaction & act, int sig, int flags ) {
187	act.sa_flags = flags;
188
189	if ( sigaction( sig, &act, nullptr ) == -1 ) {
190	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
191	_exit( EXIT_FAILURE );
192	} // if
193	}
194
195	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
196	struct sigaction act;
197	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
198	_Signal(act, sig, flags);
199	} // Signal
200
201	static void Signal( int sig, void (* handler)(int), int flags ) {
202	struct sigaction act;
203	act.sa_handler = handler;
204	_Signal(act, sig, flags);
205	} // Signal
206
207	static void sigSegvBusHandler( SIGPARMS ) {
208	if ( sfp->si_addr == nullptr ) {
209	cerr << "Null pointer (nullptr) dereference." << endl;
210	} else {
211	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
212	<< "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;
213	} // if
214	backtrace( 2 ); // skip first 2 stack frames
215	abort(); // cause core dump for debugging
216	} // sigSegvBusHandler
217
218	static void sigFpeHandler( SIGPARMS ) {
219	const char * msg;
220
221	switch ( sfp->si_code ) {
222	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
223	case FPE_FLTOVF: msg = "overflow"; break;
224	case FPE_FLTUND: msg = "underflow"; break;
225	case FPE_FLTRES: msg = "inexact result"; break;
226	case FPE_FLTINV: msg = "invalid operation"; break;
227	default: msg = "unknown";
228	} // choose
229	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
230	<< "Possible cause is constant-expression evaluation invalid." << endl;
231	backtrace( 2 ); // skip first 2 stack frames
232	abort(); // cause core dump for debugging
233	} // sigFpeHandler
234
235	static void sigAbortHandler( SIGPARMS ) {
236	backtrace( 6 ); // skip first 6 stack frames
237	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
238	raise( SIGABRT ); // reraise SIGABRT
239	} // sigAbortHandler
240
241	int main( int argc, char * argv[] ) {
242	FILE * input; // use FILE rather than istream because yyin is FILE
243	ostream * output = & cout;
244	list< Declaration * > translationUnit;
245
246	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
247	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
248	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
249	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
250
251	// cout << "main" << endl;
252	// for ( int i = 0; i < argc; i += 1 ) {
253	// cout << '\t' << argv[i] << endl;
254	// } // for
255
256	parse_cmdline( argc, argv ); // process command-line arguments
257	CodeGen::FixMain::setReplaceMain( !nomainp );
258
259	if ( waiting_for_gdb ) {
260	cerr << "Waiting for gdb" << endl;
261	cerr << "run :" << endl;
262	cerr << " gdb attach " << getpid() << endl;
263	raise(SIGSTOP);
264	} // if
265
266	try {
267	// choose to read the program from a file or stdin
268	if ( optind < argc ) { // any commands after the flags ? => input file name
269	input = fopen( argv[ optind ], "r" );
270	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
271	optind += 1;
272	} else { // no input file name
273	input = stdin;
274	} // if
275
276	Stats::Time::StartGlobal();
277	NewPass("Parse");
278	Stats::Time::StartBlock("Parse");
279
280	// read in the builtins, extras, and the prelude
281	if ( ! nopreludep ) { // include gcc builtins
282	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
283
284	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
285
286	// Read to gcc builtins, if not generating the cfa library
287	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
288	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
289	parse( gcc_builtins, LinkageSpec::Compiler );
290
291	// read the extra prelude in, if not generating the cfa library
292	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
293	assertf( extras, "cannot open extras.cf\n" );
294	parse( extras, LinkageSpec::BuiltinC );
295
296	if ( ! libcfap ) {
297	// read the prelude in, if not generating the cfa library
298	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
299	assertf( prelude, "cannot open prelude.cfa\n" );
300	parse( prelude, LinkageSpec::Intrinsic );
301
302	// Read to cfa builtins, if not generating the cfa library
303	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
304	assertf( builtins, "cannot open builtins.cf\n" );
305	parse( builtins, LinkageSpec::BuiltinCFA );
306	} // if
307	} // if
308
309	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
310
311	if ( parsep ) {
312	parseTree->printList( cout );
313	delete parseTree;
314	return EXIT_SUCCESS;
315	} // if
316
317	buildList( parseTree, translationUnit );
318	delete parseTree;
319	parseTree = nullptr;
320
321	if ( astp ) {
322	dump( translationUnit );
323	return EXIT_SUCCESS;
324	} // if
325
326	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
327	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
328	// works okay for now.
329	CodeTools::fillLocations( translationUnit );
330	Stats::Time::StopBlock();
331
332	if( useNewAST ) {
333	if (Stats::Counters::enabled) {
334	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
335	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
336	}
337	auto transUnit = convert( move( translationUnit ) );
338
339	forceFillCodeLocations( transUnit );
340
341	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( transUnit ) );
342	if ( exdeclp ) {
343	dump( move( transUnit ) );
344	return EXIT_SUCCESS;
345	}
346
347	// Must happen before auto-gen, or anything that examines ops.
348	PASS( "Verify Ctor, Dtor & Assign", Validate::verifyCtorDtorAssign( transUnit ) );
349
350	PASS( "Hoist Type Decls", Validate::hoistTypeDecls( transUnit ) );
351	// Hoist Type Decls pulls some declarations out of contexts where
352	// locations are not tracked. Perhaps they should be, but for now
353	// the full fill solves it.
354	forceFillCodeLocations( transUnit );
355
356	PASS( "Replace Typedefs", Validate::replaceTypedef( transUnit ) );
357
358	// Must happen before auto-gen.
359	PASS( "Fix Return Types", Validate::fixReturnTypes( transUnit ) );
360
361	// Must happen before Link Reference to Types, it needs correct
362	// types for mangling.
363	PASS( "Enum and Pointer Decay", Validate::decayEnumsAndPointers( transUnit ) );
364
365	// Must happen before auto-gen, because it uses the sized flag.
366	PASS( "Link Reference To Types", Validate::linkReferenceToTypes( transUnit ) );
367
368	// Must happen after Link References To Types,
369	// because aggregate members are accessed.
370	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes( transUnit ) );
371
372	PASS( "Hoist Struct", Validate::hoistStruct( transUnit ) );
373	PASS( "Eliminate Typedef", Validate::eliminateTypedef( transUnit ) );
374
375	// Check as early as possible. Can't happen before
376	// LinkReferenceToType, observed failing when attempted
377	// before eliminateTypedef
378	PASS( "Validate Generic Parameters", Validate::fillGenericParameters( transUnit ) );
379
380	PASS( "Translate Dimensions", Validate::translateDimensionParameters( transUnit ) );
381	PASS( "Check Function Returns", Validate::checkReturnStatements( transUnit ) );
382
383	// Must happen before Autogen.
384	PASS( "Fix Return Statements", InitTweak::fixReturnStatements( transUnit ) );
385
386	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords( transUnit ) );
387
388	// Must be after implement concurrent keywords; because uniqueIds
389	// must be set on declaration before resolution.
390	// Must happen before autogen routines are added.
391	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
392
393	// Must happen before autogen routines are added.
394	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
395
396	// Must be after enum and pointer decay.
397	// Must be before compound literals.
398	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
399
400	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
401	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
402	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
403	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
404	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
405	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
406
407	if ( symtabp ) {
408	return EXIT_SUCCESS;
409	} // if
410
411	if ( expraltp ) {
412	ResolvExpr::printCandidates( transUnit );
413	return EXIT_SUCCESS;
414	} // if
415
416	if ( validp ) {
417	dump( move( transUnit ) );
418	return EXIT_SUCCESS;
419	} // if
420
421	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
422	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
423	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
424	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
425	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
426
427	if ( libcfap ) {
428	// Generate the bodies of cfa library functions.
429	LibCfa::makeLibCfa( transUnit );
430	} // if
431
432	if ( declstatsp ) {
433	printDeclStats( transUnit );
434	return EXIT_SUCCESS;
435	} // if
436
437	if ( bresolvep ) {
438	dump( move( transUnit ) );
439	return EXIT_SUCCESS;
440	} // if
441
442	if ( resolvprotop ) {
443	dumpAsResolverProto( transUnit );
444	return EXIT_SUCCESS;
445	} // if
446
447	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
448	if ( exprp ) {
449	dump( move( transUnit ) );
450	return EXIT_SUCCESS;
451	} // if
452
453	forceFillCodeLocations( transUnit );
454
455	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
456
457	// fix ObjectDecl - replaces ConstructorInit nodes
458	if ( ctorinitp ) {
459	dump( move( transUnit ) );
460	return EXIT_SUCCESS;
461	} // if
462
463	// Currently not working due to unresolved issues with UniqueExpr
464	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
465
466	PASS( "Translate Tries", ControlStruct::translateTries( transUnit ) );
467	PASS( "Gen Waitfor", Concurrency::generateWaitFor( transUnit ) );
468
469	translationUnit = convert( move( transUnit ) );
470	} else {
471	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
472	if ( exdeclp ) {
473	dump( translationUnit );
474	return EXIT_SUCCESS;
475	} // if
476
477	// add the assignment statement after the initialization of a type parameter
478	PASS( "Validate", SymTab::validate( translationUnit ) );
479
480	if ( symtabp ) {
481	deleteAll( translationUnit );
482	return EXIT_SUCCESS;
483	} // if
484
485	if ( expraltp ) {
486	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
487	acceptAll( translationUnit, printer );
488	return EXIT_SUCCESS;
489	} // if
490
491	if ( validp ) {
492	dump( translationUnit );
493	return EXIT_SUCCESS;
494	} // if
495
496	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
497	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
498	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
499	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
500	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
501
502	if ( libcfap ) {
503	// Generate the bodies of cfa library functions.
504	LibCfa::makeLibCfa( translationUnit );
505	} // if
506
507	if ( declstatsp ) {
508	CodeTools::printDeclStats( translationUnit );
509	deleteAll( translationUnit );
510	return EXIT_SUCCESS;
511	} // if
512
513	if ( bresolvep ) {
514	dump( translationUnit );
515	return EXIT_SUCCESS;
516	} // if
517
518	CodeTools::fillLocations( translationUnit );
519
520	if ( resolvprotop ) {
521	CodeTools::dumpAsResolvProto( translationUnit );
522	return EXIT_SUCCESS;
523	} // if
524
525	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
526	if ( exprp ) {
527	dump( translationUnit );
528	return EXIT_SUCCESS;
529	}
530
531	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
532
533	// fix ObjectDecl - replaces ConstructorInit nodes
534	if ( ctorinitp ) {
535	dump ( translationUnit );
536	return EXIT_SUCCESS;
537	} // if
538
539	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
540	PASS( "Translate Tries", ControlStruct::translateTries( translationUnit ) );
541	PASS( "Gen Waitfor", Concurrency::generateWaitFor( translationUnit ) );
542	}
543
544	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
545
546	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
547
548	if ( tuplep ) {
549	dump( translationUnit );
550	return EXIT_SUCCESS;
551	} // if
552
553	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
554
555	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
556	if ( genericsp ) {
557	dump( translationUnit );
558	return EXIT_SUCCESS;
559	} // if
560
561	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
562
563	if ( bboxp ) {
564	dump( translationUnit );
565	return EXIT_SUCCESS;
566	} // if
567	PASS( "Box", GenPoly::box( translationUnit ) );
568
569	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
570
571	// Code has been lowered to C, now we can start generation.
572
573	if ( bcodegenp ) {
574	dump( translationUnit );
575	return EXIT_SUCCESS;
576	} // if
577
578	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
579	output = new ofstream( argv[ optind ] );
580	} // if
581
582	CodeTools::fillLocations( translationUnit );
583	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
584
585	CodeGen::FixMain::fix( translationUnit, *output,
586	(PreludeDirector + "/bootloader.c").c_str() );
587	if ( output != &cout ) {
588	delete output;
589	} // if
590	} catch ( SemanticErrorException & e ) {
591	if ( errorp ) {
592	cerr << "---AST at error:---" << endl;
593	dump( translationUnit, cerr );
594	cerr << endl << "---End of AST, begin error message:---\n" << endl;
595	} // if
596	e.print();
597	if ( output != &cout ) {
598	delete output;
599	} // if
600	return EXIT_FAILURE;
601	} catch ( UnimplementedError & e ) {
602	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
603	if ( output != &cout ) {
604	delete output;
605	} // if
606	return EXIT_FAILURE;
607	} catch ( CompilerError & e ) {
608	cerr << "Compiler Error: " << e.get_what() << endl;
609	cerr << "(please report bugs to [REDACTED])" << endl;
610	if ( output != &cout ) {
611	delete output;
612	} // if
613	return EXIT_FAILURE;
614	} catch ( std::bad_alloc & ) {
615	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
616	backtrace( 1 );
617	abort();
618	} catch ( ... ) {
619	exception_ptr eptr = current_exception();
620	try {
621	if (eptr) {
622	rethrow_exception(eptr);
623	} else {
624	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
625	} // if
626	} catch( const exception & e ) {
627	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
628	} // try
629	return EXIT_FAILURE;
630	} // try
631
632	deleteAll( translationUnit );
633	Stats::print();
634	return EXIT_SUCCESS;
635	} // main
636
637
638	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
639
640	enum { PreludeDir = 128 };
641	static struct option long_opts[] = {
642	{ "colors", required_argument, nullptr, 'c' },
643	{ "gdb", no_argument, nullptr, 'g' },
644	{ "help", no_argument, nullptr, 'h' },
645	{ "libcfa", no_argument, nullptr, 'l' },
646	{ "linemarks", no_argument, nullptr, 'L' },
647	{ "no-main", no_argument, 0, 'm' },
648	{ "no-linemarks", no_argument, nullptr, 'N' },
649	{ "no-prelude", no_argument, nullptr, 'n' },
650	{ "prototypes", no_argument, nullptr, 'p' },
651	{ "deterministic-out", no_argument, nullptr, 'd' },
652	{ "old-ast", no_argument, nullptr, 'O'},
653	{ "new-ast", no_argument, nullptr, 'A'},
654	{ "print", required_argument, nullptr, 'P' },
655	{ "prelude-dir", required_argument, nullptr, PreludeDir },
656	{ "statistics", required_argument, nullptr, 'S' },
657	{ "tree", no_argument, nullptr, 't' },
658	{ "", no_argument, nullptr, 0 }, // -w
659	{ "", no_argument, nullptr, 0 }, // -W
660	{ "", no_argument, nullptr, 0 }, // -D
661	{ nullptr, 0, nullptr, 0 }
662	}; // long_opts
663
664	static const char * description[] = {
665	"diagnostic color: never, always, auto", // -c
666	"wait for gdb to attach", // -g
667	"print translator help message", // -h
668	"generate libcfa.c", // -l
669	"generate line marks", // -L
670	"do not replace main", // -m
671	"do not generate line marks", // -N
672	"do not read prelude", // -n
673	"do not generate prelude prototypes => prelude not printed", // -p
674	"only print deterministic output", // -d
675	"Use the old-ast", // -O
676	"Use the new-ast", // -A
677	"print", // -P
678	"<directory> prelude directory for debug/nodebug", // no flag
679	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
680	"building cfa standard lib", // -t
681	"", // -w
682	"", // -W
683	"", // -D
684	}; // description
685
686	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
687
688	static struct Printopts {
689	const char * name;
690	int & flag;
691	int val;
692	const char * descript;
693	} printopts[] = {
694	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
695	{ "asterr", errorp, true, "print AST on error" },
696	{ "declstats", declstatsp, true, "code property statistics" },
697	{ "parse", yydebug, true, "yacc (parsing) debug information" },
698	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
699	{ "rproto", resolvprotop, true, "resolver-proto instance" },
700	{ "rsteps", resolvep, true, "print resolver steps" },
701	{ "tree", parsep, true, "print parse tree" },
702	// code dumps
703	{ "ast", astp, true, "print AST after parsing" },
704	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
705	{ "symevt", symtabp, true, "print AST after symbol table events" },
706	{ "altexpr", expraltp, true, "print alternatives for expressions" },
707	{ "astdecl", validp, true, "print AST after declaration validation pass" },
708	{ "resolver", bresolvep, true, "print AST before resolver step" },
709	{ "astexpr", exprp, true, "print AST after expression analysis" },
710	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
711	{ "tuple", tuplep, true, "print AST after tuple expansion" },
712	{ "astgen", genericsp, true, "print AST after instantiate generics" },
713	{ "box", bboxp, true, "print AST before box step" },
714	{ "codegen", bcodegenp, true, "print AST before code generation" },
715	};
716	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
717
718	static void usage( char * argv[] ) {
719	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
720	int i = 0, j = 1; // j skips starting colon
721	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
722	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
723	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
724	cout << " -" << optstring[j] << ",";
725	} else { // no flag
726	j -= 1; // compensate
727	cout << " ";
728	} // if
729	cout << " --" << left << setw(12) << long_opts[i].name << " ";
730	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
731	cout << "one of: " << endl;
732	for ( int i = 0; i < printoptsSize; i += 1 ) {
733	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
734	} // for
735	} else {
736	cout << description[i] << endl;
737	} // if
738	} // if
739	if ( optstring[j + 1] == ':' ) j += 1;
740	} // for
741	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
742	exit( EXIT_FAILURE );
743	} // usage
744
745	static void parse_cmdline( int argc, char * argv[] ) {
746	opterr = 0; // (global) prevent getopt from printing error messages
747
748	bool Wsuppress = false, Werror = false;
749	int c;
750	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
751	switch ( c ) {
752	case 'c': // diagnostic colors
753	if ( strcmp( optarg, "always" ) == 0 ) {
754	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
755	} else if ( strcmp( optarg, "never" ) == 0 ) {
756	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
757	} else if ( strcmp( optarg, "auto" ) == 0 ) {
758	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
759	} // if
760	break;
761	case 'h': // help message
762	usage( argv ); // no return
763	break;
764	case 'l': // generate libcfa.c
765	libcfap = true;
766	break;
767	case 'L': // generate line marks
768	linemarks = true;
769	break;
770	case 'm': // do not replace main
771	nomainp = true;
772	break;
773	case 'N': // do not generate line marks
774	linemarks = false;
775	break;
776	case 'n': // do not read prelude
777	nopreludep = true;
778	break;
779	case 'p': // generate prototypes for prelude functions
780	genproto = true;
781	break;
782	case 'd': // don't print non-deterministic output
783	deterministic_output = true;
784	break;
785	case 'O': // don't print non-deterministic output
786	useNewAST = false;
787	break;
788	case 'A': // don't print non-deterministic output
789	useNewAST = true;
790	break;
791	case 'P': // print options
792	for ( int i = 0;; i += 1 ) {
793	if ( i == printoptsSize ) {
794	cout << "Unknown --print option " << optarg << endl;
795	goto Default;
796	} // if
797	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
798	printopts[i].flag = printopts[i].val;
799	break;
800	} // if
801	} // for
802	break;
803	case PreludeDir: // prelude directory for debug/nodebug, hidden
804	PreludeDirector = optarg;
805	break;
806	case 'S': // enable profiling information, argument comma separated list of names
807	Stats::parse_params( optarg );
808	break;
809	case 't': // building cfa stdlib
810	treep = true;
811	break;
812	case 'g': // wait for gdb
813	waiting_for_gdb = true;
814	break;
815	case 'w': // suppress all warnings, hidden
816	Wsuppress = true;
817	break;
818	case 'W': // coordinate gcc -W with CFA, hidden
819	if ( strcmp( optarg, "all" ) == 0 ) {
820	SemanticWarning_EnableAll();
821	} else if ( strcmp( optarg, "error" ) == 0 ) {
822	Werror = true;
823	} else {
824	char * warning = optarg;
825	Severity s;
826	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
827	warning += 3;
828	s = Severity::Suppress;
829	} else {
830	s = Severity::Warn;
831	} // if
832	SemanticWarning_Set( warning, s );
833	} // if
834	break;
835	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
836	break;
837	case '?': // unknown option
838	if ( optopt ) { // short option ?
839	cout << "Unknown option -" << (char)optopt << endl;
840	} else {
841	cout << "Unknown option " << argv[optind - 1] << endl;
842	} // if
843	goto Default;
844	case ':': // missing option
845	if ( optopt ) { // short option ?
846	cout << "Missing option for -" << (char)optopt << endl;
847	} else {
848	cout << "Missing option for " << argv[optind - 1] << endl;
849	} // if
850	goto Default;
851	Default:
852	default:
853	usage( argv ); // no return
854	} // switch
855	} // while
856
857	if ( Werror ) {
858	SemanticWarning_WarningAsError();
859	} // if
860	if ( Wsuppress ) {
861	SemanticWarning_SuppressAll();
862	} // if
863	// for ( const auto w : WarningFormats ) {
864	// cout << w.name << ' ' << (int)w.severity << endl;
865	// } // for
866	} // parse_cmdline
867
868	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
869	extern int yyparse( void );
870	extern FILE * yyin;
871	extern int yylineno;
872
873	::linkage = linkage; // set globals
874	yyin = input;
875	yylineno = 1;
876	int parseStatus = yyparse();
877
878	fclose( input );
879	if ( shouldExit \|\| parseStatus != 0 ) {
880	exit( parseStatus );
881	} // if
882	} // parse
883
884	static bool notPrelude( Declaration * decl ) {
885	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
886	} // notPrelude
887
888	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
889	list< Declaration * > decls;
890
891	if ( genproto ) {
892	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
893	} else {
894	decls = translationUnit;
895	} // if
896
897	// depending on commandline options, either generate code or dump the AST
898	if ( codegenp ) {
899	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
900	} else {
901	printAll( decls, out );
902	} // if
903	deleteAll( translationUnit );
904	} // dump
905
906	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
907	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
908	dump( translationUnit, out );
909	}
910
911	// Local Variables: //
912	// tab-width: 4 //
913	// mode: c++ //
914	// compile-command: "make install" //
915	// End: //

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