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source: src/main.cc @ 18070ee

ADTast-experimentalpthread-emulationqualifiedEnum

Last change on this file since 18070ee was 11df881, checked in by Andrew Beach <ajbeach@…>, 22 months ago
Updated documentation on pre-resolver passes, moving code to headers instead of uses. Note that some comments were just copied over, I don't know if they are accurate.
Property mode set to `100644`
File size: 33.1 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	PASS( "Verify Ctor, Dtor & Assign", Validate::verifyCtorDtorAssign( transUnit ) );
348	PASS( "Hoist Type Decls", Validate::hoistTypeDecls( transUnit ) );
349	// Hoist Type Decls pulls some declarations out of contexts where
350	// locations are not tracked. Perhaps they should be, but for now
351	// the full fill solves it.
352	forceFillCodeLocations( transUnit );
353
354	PASS( "Replace Typedefs", Validate::replaceTypedef( transUnit ) );
355	PASS( "Fix Return Types", Validate::fixReturnTypes( transUnit ) );
356	PASS( "Enum and Pointer Decay", Validate::decayEnumsAndPointers( transUnit ) );
357
358	PASS( "Link Reference To Types", Validate::linkReferenceToTypes( transUnit ) );
359
360	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes( transUnit ) );
361	PASS( "Hoist Struct", Validate::hoistStruct( transUnit ) );
362	PASS( "Eliminate Typedef", Validate::eliminateTypedef( transUnit ) );
363	PASS( "Validate Generic Parameters", Validate::fillGenericParameters( transUnit ) );
364	PASS( "Translate Dimensions", Validate::translateDimensionParameters( transUnit ) );
365	PASS( "Check Function Returns", Validate::checkReturnStatements( transUnit ) );
366	PASS( "Fix Return Statements", InitTweak::fixReturnStatements( transUnit ) );
367	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords( transUnit ) );
368	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
369	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
370
371	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
372
373	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
374	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
375	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
376	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
377	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
378	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
379
380	if ( symtabp ) {
381	return EXIT_SUCCESS;
382	} // if
383
384	if ( expraltp ) {
385	ResolvExpr::printCandidates( transUnit );
386	return EXIT_SUCCESS;
387	} // if
388
389	if ( validp ) {
390	dump( move( transUnit ) );
391	return EXIT_SUCCESS;
392	} // if
393
394	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
395	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
396	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
397	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
398	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
399
400	if ( libcfap ) {
401	// Generate the bodies of cfa library functions.
402	LibCfa::makeLibCfa( transUnit );
403	} // if
404
405	if ( declstatsp ) {
406	printDeclStats( transUnit );
407	return EXIT_SUCCESS;
408	} // if
409
410	if ( bresolvep ) {
411	dump( move( transUnit ) );
412	return EXIT_SUCCESS;
413	} // if
414
415	if ( resolvprotop ) {
416	dumpAsResolverProto( transUnit );
417	return EXIT_SUCCESS;
418	} // if
419
420	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
421	if ( exprp ) {
422	dump( move( transUnit ) );
423	return EXIT_SUCCESS;
424	} // if
425
426	forceFillCodeLocations( transUnit );
427
428	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
429
430	// fix ObjectDecl - replaces ConstructorInit nodes
431	if ( ctorinitp ) {
432	dump( move( transUnit ) );
433	return EXIT_SUCCESS;
434	} // if
435
436	// Currently not working due to unresolved issues with UniqueExpr
437	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
438
439	PASS( "Translate Tries", ControlStruct::translateTries( transUnit ) );
440	PASS( "Gen Waitfor", Concurrency::generateWaitFor( transUnit ) );
441
442	translationUnit = convert( move( transUnit ) );
443	} else {
444	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
445	if ( exdeclp ) {
446	dump( translationUnit );
447	return EXIT_SUCCESS;
448	} // if
449
450	// add the assignment statement after the initialization of a type parameter
451	PASS( "Validate", SymTab::validate( translationUnit ) );
452
453	if ( symtabp ) {
454	deleteAll( translationUnit );
455	return EXIT_SUCCESS;
456	} // if
457
458	if ( expraltp ) {
459	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
460	acceptAll( translationUnit, printer );
461	return EXIT_SUCCESS;
462	} // if
463
464	if ( validp ) {
465	dump( translationUnit );
466	return EXIT_SUCCESS;
467	} // if
468
469	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
470	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
471	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
472	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
473	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
474
475	if ( libcfap ) {
476	// Generate the bodies of cfa library functions.
477	LibCfa::makeLibCfa( translationUnit );
478	} // if
479
480	if ( declstatsp ) {
481	CodeTools::printDeclStats( translationUnit );
482	deleteAll( translationUnit );
483	return EXIT_SUCCESS;
484	} // if
485
486	if ( bresolvep ) {
487	dump( translationUnit );
488	return EXIT_SUCCESS;
489	} // if
490
491	CodeTools::fillLocations( translationUnit );
492
493	if ( resolvprotop ) {
494	CodeTools::dumpAsResolvProto( translationUnit );
495	return EXIT_SUCCESS;
496	} // if
497
498	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
499	if ( exprp ) {
500	dump( translationUnit );
501	return EXIT_SUCCESS;
502	}
503
504	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
505
506	// fix ObjectDecl - replaces ConstructorInit nodes
507	if ( ctorinitp ) {
508	dump ( translationUnit );
509	return EXIT_SUCCESS;
510	} // if
511
512	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
513	PASS( "Translate Tries", ControlStruct::translateTries( translationUnit ) );
514	PASS( "Gen Waitfor", Concurrency::generateWaitFor( translationUnit ) );
515	}
516
517	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
518
519	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
520
521	if ( tuplep ) {
522	dump( translationUnit );
523	return EXIT_SUCCESS;
524	} // if
525
526	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
527
528	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
529	if ( genericsp ) {
530	dump( translationUnit );
531	return EXIT_SUCCESS;
532	} // if
533
534	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
535
536	if ( bboxp ) {
537	dump( translationUnit );
538	return EXIT_SUCCESS;
539	} // if
540	PASS( "Box", GenPoly::box( translationUnit ) );
541
542	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
543
544	// Code has been lowered to C, now we can start generation.
545
546	if ( bcodegenp ) {
547	dump( translationUnit );
548	return EXIT_SUCCESS;
549	} // if
550
551	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
552	output = new ofstream( argv[ optind ] );
553	} // if
554
555	CodeTools::fillLocations( translationUnit );
556	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
557
558	CodeGen::FixMain::fix( translationUnit, *output,
559	(PreludeDirector + "/bootloader.c").c_str() );
560	if ( output != &cout ) {
561	delete output;
562	} // if
563	} catch ( SemanticErrorException & e ) {
564	if ( errorp ) {
565	cerr << "---AST at error:---" << endl;
566	dump( translationUnit, cerr );
567	cerr << endl << "---End of AST, begin error message:---\n" << endl;
568	} // if
569	e.print();
570	if ( output != &cout ) {
571	delete output;
572	} // if
573	return EXIT_FAILURE;
574	} catch ( UnimplementedError & e ) {
575	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
576	if ( output != &cout ) {
577	delete output;
578	} // if
579	return EXIT_FAILURE;
580	} catch ( CompilerError & e ) {
581	cerr << "Compiler Error: " << e.get_what() << endl;
582	cerr << "(please report bugs to [REDACTED])" << endl;
583	if ( output != &cout ) {
584	delete output;
585	} // if
586	return EXIT_FAILURE;
587	} catch ( std::bad_alloc & ) {
588	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
589	backtrace( 1 );
590	abort();
591	} catch ( ... ) {
592	exception_ptr eptr = current_exception();
593	try {
594	if (eptr) {
595	rethrow_exception(eptr);
596	} else {
597	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
598	} // if
599	} catch( const exception & e ) {
600	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
601	} // try
602	return EXIT_FAILURE;
603	} // try
604
605	deleteAll( translationUnit );
606	Stats::print();
607	return EXIT_SUCCESS;
608	} // main
609
610
611	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
612
613	enum { PreludeDir = 128 };
614	static struct option long_opts[] = {
615	{ "colors", required_argument, nullptr, 'c' },
616	{ "gdb", no_argument, nullptr, 'g' },
617	{ "help", no_argument, nullptr, 'h' },
618	{ "libcfa", no_argument, nullptr, 'l' },
619	{ "linemarks", no_argument, nullptr, 'L' },
620	{ "no-main", no_argument, 0, 'm' },
621	{ "no-linemarks", no_argument, nullptr, 'N' },
622	{ "no-prelude", no_argument, nullptr, 'n' },
623	{ "prototypes", no_argument, nullptr, 'p' },
624	{ "deterministic-out", no_argument, nullptr, 'd' },
625	{ "old-ast", no_argument, nullptr, 'O'},
626	{ "new-ast", no_argument, nullptr, 'A'},
627	{ "print", required_argument, nullptr, 'P' },
628	{ "prelude-dir", required_argument, nullptr, PreludeDir },
629	{ "statistics", required_argument, nullptr, 'S' },
630	{ "tree", no_argument, nullptr, 't' },
631	{ "", no_argument, nullptr, 0 }, // -w
632	{ "", no_argument, nullptr, 0 }, // -W
633	{ "", no_argument, nullptr, 0 }, // -D
634	{ nullptr, 0, nullptr, 0 }
635	}; // long_opts
636
637	static const char * description[] = {
638	"diagnostic color: never, always, auto", // -c
639	"wait for gdb to attach", // -g
640	"print translator help message", // -h
641	"generate libcfa.c", // -l
642	"generate line marks", // -L
643	"do not replace main", // -m
644	"do not generate line marks", // -N
645	"do not read prelude", // -n
646	"do not generate prelude prototypes => prelude not printed", // -p
647	"only print deterministic output", // -d
648	"Use the old-ast", // -O
649	"Use the new-ast", // -A
650	"print", // -P
651	"<directory> prelude directory for debug/nodebug", // no flag
652	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
653	"building cfa standard lib", // -t
654	"", // -w
655	"", // -W
656	"", // -D
657	}; // description
658
659	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
660
661	static struct Printopts {
662	const char * name;
663	int & flag;
664	int val;
665	const char * descript;
666	} printopts[] = {
667	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
668	{ "asterr", errorp, true, "print AST on error" },
669	{ "declstats", declstatsp, true, "code property statistics" },
670	{ "parse", yydebug, true, "yacc (parsing) debug information" },
671	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
672	{ "rproto", resolvprotop, true, "resolver-proto instance" },
673	{ "rsteps", resolvep, true, "print resolver steps" },
674	{ "tree", parsep, true, "print parse tree" },
675	// code dumps
676	{ "ast", astp, true, "print AST after parsing" },
677	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
678	{ "symevt", symtabp, true, "print AST after symbol table events" },
679	{ "altexpr", expraltp, true, "print alternatives for expressions" },
680	{ "astdecl", validp, true, "print AST after declaration validation pass" },
681	{ "resolver", bresolvep, true, "print AST before resolver step" },
682	{ "astexpr", exprp, true, "print AST after expression analysis" },
683	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
684	{ "tuple", tuplep, true, "print AST after tuple expansion" },
685	{ "astgen", genericsp, true, "print AST after instantiate generics" },
686	{ "box", bboxp, true, "print AST before box step" },
687	{ "codegen", bcodegenp, true, "print AST before code generation" },
688	};
689	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
690
691	static void usage( char * argv[] ) {
692	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
693	int i = 0, j = 1; // j skips starting colon
694	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
695	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
696	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
697	cout << " -" << optstring[j] << ",";
698	} else { // no flag
699	j -= 1; // compensate
700	cout << " ";
701	} // if
702	cout << " --" << left << setw(12) << long_opts[i].name << " ";
703	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
704	cout << "one of: " << endl;
705	for ( int i = 0; i < printoptsSize; i += 1 ) {
706	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
707	} // for
708	} else {
709	cout << description[i] << endl;
710	} // if
711	} // if
712	if ( optstring[j + 1] == ':' ) j += 1;
713	} // for
714	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
715	exit( EXIT_FAILURE );
716	} // usage
717
718	static void parse_cmdline( int argc, char * argv[] ) {
719	opterr = 0; // (global) prevent getopt from printing error messages
720
721	bool Wsuppress = false, Werror = false;
722	int c;
723	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
724	switch ( c ) {
725	case 'c': // diagnostic colors
726	if ( strcmp( optarg, "always" ) == 0 ) {
727	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
728	} else if ( strcmp( optarg, "never" ) == 0 ) {
729	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
730	} else if ( strcmp( optarg, "auto" ) == 0 ) {
731	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
732	} // if
733	break;
734	case 'h': // help message
735	usage( argv ); // no return
736	break;
737	case 'l': // generate libcfa.c
738	libcfap = true;
739	break;
740	case 'L': // generate line marks
741	linemarks = true;
742	break;
743	case 'm': // do not replace main
744	nomainp = true;
745	break;
746	case 'N': // do not generate line marks
747	linemarks = false;
748	break;
749	case 'n': // do not read prelude
750	nopreludep = true;
751	break;
752	case 'p': // generate prototypes for prelude functions
753	genproto = true;
754	break;
755	case 'd': // don't print non-deterministic output
756	deterministic_output = true;
757	break;
758	case 'O': // don't print non-deterministic output
759	useNewAST = false;
760	break;
761	case 'A': // don't print non-deterministic output
762	useNewAST = true;
763	break;
764	case 'P': // print options
765	for ( int i = 0;; i += 1 ) {
766	if ( i == printoptsSize ) {
767	cout << "Unknown --print option " << optarg << endl;
768	goto Default;
769	} // if
770	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
771	printopts[i].flag = printopts[i].val;
772	break;
773	} // if
774	} // for
775	break;
776	case PreludeDir: // prelude directory for debug/nodebug, hidden
777	PreludeDirector = optarg;
778	break;
779	case 'S': // enable profiling information, argument comma separated list of names
780	Stats::parse_params( optarg );
781	break;
782	case 't': // building cfa stdlib
783	treep = true;
784	break;
785	case 'g': // wait for gdb
786	waiting_for_gdb = true;
787	break;
788	case 'w': // suppress all warnings, hidden
789	Wsuppress = true;
790	break;
791	case 'W': // coordinate gcc -W with CFA, hidden
792	if ( strcmp( optarg, "all" ) == 0 ) {
793	SemanticWarning_EnableAll();
794	} else if ( strcmp( optarg, "error" ) == 0 ) {
795	Werror = true;
796	} else {
797	char * warning = optarg;
798	Severity s;
799	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
800	warning += 3;
801	s = Severity::Suppress;
802	} else {
803	s = Severity::Warn;
804	} // if
805	SemanticWarning_Set( warning, s );
806	} // if
807	break;
808	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
809	break;
810	case '?': // unknown option
811	if ( optopt ) { // short option ?
812	cout << "Unknown option -" << (char)optopt << endl;
813	} else {
814	cout << "Unknown option " << argv[optind - 1] << endl;
815	} // if
816	goto Default;
817	case ':': // missing option
818	if ( optopt ) { // short option ?
819	cout << "Missing option for -" << (char)optopt << endl;
820	} else {
821	cout << "Missing option for " << argv[optind - 1] << endl;
822	} // if
823	goto Default;
824	Default:
825	default:
826	usage( argv ); // no return
827	} // switch
828	} // while
829
830	if ( Werror ) {
831	SemanticWarning_WarningAsError();
832	} // if
833	if ( Wsuppress ) {
834	SemanticWarning_SuppressAll();
835	} // if
836	// for ( const auto w : WarningFormats ) {
837	// cout << w.name << ' ' << (int)w.severity << endl;
838	// } // for
839	} // parse_cmdline
840
841	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
842	extern int yyparse( void );
843	extern FILE * yyin;
844	extern int yylineno;
845
846	::linkage = linkage; // set globals
847	yyin = input;
848	yylineno = 1;
849	int parseStatus = yyparse();
850
851	fclose( input );
852	if ( shouldExit \|\| parseStatus != 0 ) {
853	exit( parseStatus );
854	} // if
855	} // parse
856
857	static bool notPrelude( Declaration * decl ) {
858	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
859	} // notPrelude
860
861	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
862	list< Declaration * > decls;
863
864	if ( genproto ) {
865	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
866	} else {
867	decls = translationUnit;
868	} // if
869
870	// depending on commandline options, either generate code or dump the AST
871	if ( codegenp ) {
872	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
873	} else {
874	printAll( decls, out );
875	} // if
876	deleteAll( translationUnit );
877	} // dump
878
879	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
880	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
881	dump( translationUnit, out );
882	}
883
884	// Local Variables: //
885	// tab-width: 4 //
886	// mode: c++ //
887	// compile-command: "make install" //
888	// End: //

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