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source: src/main.cc @ 767a8ef

ADTast-experimentalpthread-emulationqualifiedEnum

Last change on this file since 767a8ef was 9939dc3, checked in by Andrew Beach <ajbeach@…>, 2 years ago
Reduced the number of object files linked into the demangler. Some of the divisions are rather odd, Lvalue2 and FixMain2, but they should be a better base to work from. Also improved the calling of the impurity detector visitors slightly.
Property mode set to `100644`
File size: 32.9 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 : Fri Apr 29 9:52:00 2022
13	// Update Count : 673
14	//
15
16	#include <cxxabi.h> // for __cxa_demangle
17	#include <execinfo.h> // for backtrace, backtrace_symbols
18	#include <getopt.h> // for no_argument, optind, geto...
19	#include <cassert> // for assertf
20	#include <cstdio> // for fopen, FILE, fclose, stdin
21	#include <cstdlib> // for exit, free, abort, EXIT_F...
22	#include <csignal> // for signal, SIGABRT, SIGSEGV
23	#include <cstring> // for index
24	#include <fstream> // for ofstream
25	#include <iostream> // for operator<<, basic_ostream
26	#include <iomanip>
27	#include <iterator> // for back_inserter
28	#include <list> // for list
29	#include <string> // for char_traits, operator<<
30
31	using namespace std;
32
33	#include "AST/Convert.hpp"
34	#include "CompilationState.h"
35	#include "../config.h" // for CFA_LIBDIR
36	#include "CodeGen/FixMain.h" // for FixMain
37	#include "CodeGen/FixNames.h" // for fixNames
38	#include "CodeGen/Generate.h" // for generate
39	#include "CodeGen/LinkOnce.h" // for translateLinkOnce
40	#include "CodeTools/DeclStats.h" // for printDeclStats
41	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
42	#include "CodeTools/TrackLoc.h" // for fillLocations
43	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
44	#include "Common/CompilerError.h" // for CompilerError
45	#include "Common/DeclStats.hpp" // for printDeclStats
46	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
47	#include "Common/Stats.h"
48	#include "Common/PassVisitor.h"
49	#include "Common/SemanticError.h" // for SemanticError
50	#include "Common/UnimplementedError.h" // for UnimplementedError
51	#include "Common/utility.h" // for deleteAll, filter, printAll
52	#include "Concurrency/Keywords.h" // for implementMutex, implement...
53	#include "Concurrency/Waitfor.h" // for generateWaitfor
54	#include "ControlStruct/ExceptDecl.h" // for translateExcept
55	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
56	#include "ControlStruct/FixLabels.hpp" // for fixLabels
57	#include "ControlStruct/HoistControlDecls.hpp" // hoistControlDecls
58	#include "ControlStruct/Mutate.h" // for mutate
59	#include "GenPoly/Box.h" // for box
60	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
61	#include "GenPoly/Lvalue.h" // for convertLvalue
62	#include "GenPoly/Specialize.h" // for convertSpecializations
63	#include "InitTweak/FixInit.h" // for fix
64	#include "InitTweak/GenInit.h" // for genInit
65	#include "MakeLibCfa.h" // for makeLibCfa
66	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
67	#include "Parser/TypedefTable.h" // for TypedefTable
68	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
69	#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
70	#include "ResolvExpr/Resolver.h" // for resolve
71	#include "SymTab/Validate.h" // for validate
72	#include "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/FindSpecialDecls.h" // for findGlobalDecls
81	#include "Validate/FixQualifiedTypes.hpp" // for fixQualifiedTypes
82	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
83	#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
84	#include "Validate/HoistStruct.hpp" // for hoistStruct
85	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
86	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
87	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
88	#include "Virtual/ExpandCasts.h" // for expandCasts
89
90	static void NewPass( const char * const name ) {
91	Stats::Heap::newPass( name );
92	using namespace Stats::Counters;
93	{
94	static auto group = build<CounterGroup>( "Pass Visitor" );
95	auto pass = build<CounterGroup>( name, group );
96	pass_visitor_stats.depth = 0;
97	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
98	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
99	}
100	{
101	static auto group = build<CounterGroup>( "Syntax Node" );
102	auto pass = build<CounterGroup>( name, group );
103	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
104	}
105	}
106
107	#define PASS( name, pass ) \
108	if ( errorp ) { cerr << name << endl; } \
109	NewPass(name); \
110	Stats::Time::StartBlock(name); \
111	pass; \
112	Stats::Time::StopBlock();
113
114	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
115	TypedefTable typedefTable;
116	DeclarationNode * parseTree = nullptr; // program parse tree
117
118	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
119
120	static string PreludeDirector = "";
121
122	static void parse_cmdline( int argc, char * argv[] );
123	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
124	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
125	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
126
127	static void backtrace( int start ) { // skip first N stack frames
128	enum { Frames = 50, }; // maximum number of stack frames
129	void * array[Frames];
130	size_t size = ::backtrace( array, Frames );
131	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
132
133	*index( messages[0], '(' ) = '\0'; // find executable name
134	cerr << "Stack back trace for: " << messages[0] << endl;
135
136	// skip last 2 stack frames after main
137	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
138	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
139
140	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
141	if ( *p == '(' ) {
142	mangled_name = p;
143	} else if ( *p == '+' ) {
144	offset_begin = p;
145	} else if ( *p == ')' ) {
146	offset_end = p;
147	break;
148	} // if
149	} // for
150
151	// if line contains symbol, attempt to demangle
152	int frameNo = i - start;
153	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
154	*mangled_name++ = '\0'; // delimit strings
155	*offset_begin++ = '\0';
156	*offset_end++ = '\0';
157
158	int status;
159	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
160	// bug in __cxa_demangle for single-character lower-case non-mangled names
161	if ( status == 0 ) { // demangling successful ?
162	cerr << "(" << frameNo << ") " << messages[i] << " : "
163	<< real_name << "+" << offset_begin << offset_end << endl;
164	} else { // otherwise, output mangled name
165	cerr << "(" << frameNo << ") " << messages[i] << " : "
166	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
167	} // if
168
169	free( real_name );
170	} else { // otherwise, print the whole line
171	cerr << "(" << frameNo << ") " << messages[i] << endl;
172	} // if
173	} // for
174
175	free( messages );
176	} // backtrace
177
178	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
179
180	static void _Signal(struct sigaction & act, int sig, int flags ) {
181	act.sa_flags = flags;
182
183	if ( sigaction( sig, &act, nullptr ) == -1 ) {
184	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
185	_exit( EXIT_FAILURE );
186	} // if
187	}
188
189	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
190	struct sigaction act;
191	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
192	_Signal(act, sig, flags);
193	} // Signal
194
195	static void Signal( int sig, void (* handler)(int), int flags ) {
196	struct sigaction act;
197	act.sa_handler = handler;
198	_Signal(act, sig, flags);
199	} // Signal
200
201	static void sigSegvBusHandler( SIGPARMS ) {
202	if ( sfp->si_addr == nullptr ) {
203	cerr << "Null pointer (nullptr) dereference." << endl;
204	} else {
205	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
206	<< "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;
207	} // if
208	backtrace( 2 ); // skip first 2 stack frames
209	abort(); // cause core dump for debugging
210	} // sigSegvBusHandler
211
212	static void sigFpeHandler( SIGPARMS ) {
213	const char * msg;
214
215	switch ( sfp->si_code ) {
216	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
217	case FPE_FLTOVF: msg = "overflow"; break;
218	case FPE_FLTUND: msg = "underflow"; break;
219	case FPE_FLTRES: msg = "inexact result"; break;
220	case FPE_FLTINV: msg = "invalid operation"; break;
221	default: msg = "unknown";
222	} // choose
223	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
224	<< "Possible cause is constant-expression evaluation invalid." << endl;
225	backtrace( 2 ); // skip first 2 stack frames
226	abort(); // cause core dump for debugging
227	} // sigFpeHandler
228
229	static void sigAbortHandler( SIGPARMS ) {
230	backtrace( 6 ); // skip first 6 stack frames
231	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
232	raise( SIGABRT ); // reraise SIGABRT
233	} // sigAbortHandler
234
235	int main( int argc, char * argv[] ) {
236	FILE * input; // use FILE rather than istream because yyin is FILE
237	ostream * output = & cout;
238	list< Declaration * > translationUnit;
239
240	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
241	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
242	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
243	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
244
245	// cout << "main" << endl;
246	// for ( int i = 0; i < argc; i += 1 ) {
247	// cout << '\t' << argv[i] << endl;
248	// } // for
249
250	parse_cmdline( argc, argv ); // process command-line arguments
251	CodeGen::FixMain::setReplaceMain( !nomainp );
252
253	if ( waiting_for_gdb ) {
254	cerr << "Waiting for gdb" << endl;
255	cerr << "run :" << endl;
256	cerr << " gdb attach " << getpid() << endl;
257	raise(SIGSTOP);
258	} // if
259
260	try {
261	// choose to read the program from a file or stdin
262	if ( optind < argc ) { // any commands after the flags ? => input file name
263	input = fopen( argv[ optind ], "r" );
264	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
265	optind += 1;
266	} else { // no input file name
267	input = stdin;
268	} // if
269
270	Stats::Time::StartGlobal();
271	NewPass("Parse");
272	Stats::Time::StartBlock("Parse");
273
274	// read in the builtins, extras, and the prelude
275	if ( ! nopreludep ) { // include gcc builtins
276	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
277
278	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
279
280	// Read to gcc builtins, if not generating the cfa library
281	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
282	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
283	parse( gcc_builtins, LinkageSpec::Compiler );
284
285	// read the extra prelude in, if not generating the cfa library
286	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
287	assertf( extras, "cannot open extras.cf\n" );
288	parse( extras, LinkageSpec::BuiltinC );
289
290	if ( ! libcfap ) {
291	// read the prelude in, if not generating the cfa library
292	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
293	assertf( prelude, "cannot open prelude.cfa\n" );
294	parse( prelude, LinkageSpec::Intrinsic );
295
296	// Read to cfa builtins, if not generating the cfa library
297	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
298	assertf( builtins, "cannot open builtins.cf\n" );
299	parse( builtins, LinkageSpec::BuiltinCFA );
300	} // if
301	} // if
302
303	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
304
305	if ( parsep ) {
306	parseTree->printList( cout );
307	delete parseTree;
308	return EXIT_SUCCESS;
309	} // if
310
311	buildList( parseTree, translationUnit );
312	delete parseTree;
313	parseTree = nullptr;
314
315	if ( astp ) {
316	dump( translationUnit );
317	return EXIT_SUCCESS;
318	} // if
319
320	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
321	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
322	// works okay for now.
323	CodeTools::fillLocations( translationUnit );
324	Stats::Time::StopBlock();
325
326	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
327	if ( exdeclp ) {
328	dump( translationUnit );
329	return EXIT_SUCCESS;
330	} // if
331
332	// add the assignment statement after the initialization of a type parameter
333	PASS( "Validate-A", SymTab::validate_A( translationUnit ) );
334
335	// Must happen before auto-gen, because it uses the sized flag.
336	PASS( "Link Reference To Types", SymTab::linkReferenceToTypes( translationUnit ) );
337
338	CodeTools::fillLocations( translationUnit );
339
340	if( useNewAST ) {
341	CodeTools::fillLocations( translationUnit );
342
343	if (Stats::Counters::enabled) {
344	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
345	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
346	}
347	auto transUnit = convert( move( translationUnit ) );
348
349	forceFillCodeLocations( transUnit );
350
351	// Must happen after Link References To Types,
352	// because aggregate members are accessed.
353	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes( transUnit ) );
354
355	PASS( "Hoist Struct", Validate::hoistStruct( transUnit ) );
356	PASS( "Eliminate Typedef", Validate::eliminateTypedef( transUnit ) );
357
358	// Check as early as possible. Can't happen before
359	// LinkReferenceToType, observed failing when attempted
360	// before eliminateTypedef
361	PASS( "Validate Generic Parameters", Validate::fillGenericParameters( transUnit ) );
362
363	PASS( "Translate Dimensions", Validate::translateDimensionParameters( transUnit ) );
364	PASS( "Check Function Returns", Validate::checkReturnStatements( transUnit ) );
365
366	// Must happen before Autogen.
367	PASS( "Fix Return Statements", InitTweak::fixReturnStatements( transUnit ) );
368
369	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords( transUnit ) );
370
371	// Must be after implement concurrent keywords; because uniqueIds
372	// must be set on declaration before resolution.
373	// Must happen before autogen routines are added.
374	PASS( "Forall Pointer Decay", Validate::decayForallPointers( transUnit ) );
375
376	// Must happen before autogen routines are added.
377	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls( transUnit ) );
378
379	// Must be after enum and pointer decay.
380	// Must be before compound literals.
381	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines( transUnit ) );
382
383	PASS( "Implement Mutex", Concurrency::implementMutex( transUnit ) );
384	PASS( "Implement Thread Start", Concurrency::implementThreadStarter( transUnit ) );
385	PASS( "Compound Literal", Validate::handleCompoundLiterals( transUnit ) );
386	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer( transUnit ) );
387	PASS( "Find Global Decls", Validate::findGlobalDecls( transUnit ) );
388	PASS( "Fix Label Address", Validate::fixLabelAddresses( transUnit ) );
389
390	if ( symtabp ) {
391	return EXIT_SUCCESS;
392	} // if
393
394	if ( expraltp ) {
395	ResolvExpr::printCandidates( transUnit );
396	return EXIT_SUCCESS;
397	} // if
398
399	if ( validp ) {
400	dump( move( transUnit ) );
401	return EXIT_SUCCESS;
402	} // if
403
404	PASS( "Translate Throws", ControlStruct::translateThrows( transUnit ) );
405	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
406	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
407	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
408	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
409
410	if ( libcfap ) {
411	// Generate the bodies of cfa library functions.
412	LibCfa::makeLibCfa( transUnit );
413	} // if
414
415	if ( declstatsp ) {
416	printDeclStats( transUnit );
417	return EXIT_SUCCESS;
418	} // if
419
420	if ( bresolvep ) {
421	dump( move( transUnit ) );
422	return EXIT_SUCCESS;
423	} // if
424
425	if ( resolvprotop ) {
426	dumpAsResolverProto( transUnit );
427	return EXIT_SUCCESS;
428	} // if
429
430	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
431	if ( exprp ) {
432	dump( move( transUnit ) );
433	return EXIT_SUCCESS;
434	} // if
435
436	forceFillCodeLocations( transUnit );
437
438	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
439
440	// fix ObjectDecl - replaces ConstructorInit nodes
441	if ( ctorinitp ) {
442	dump( move( transUnit ) );
443	return EXIT_SUCCESS;
444	} // if
445
446	// Currently not working due to unresolved issues with UniqueExpr
447	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
448
449	PASS( "Translate Tries" , ControlStruct::translateTries( transUnit ) );
450
451	translationUnit = convert( move( transUnit ) );
452	} else {
453	PASS( "Validate-B", SymTab::validate_B( translationUnit ) );
454	PASS( "Validate-C", SymTab::validate_C( translationUnit ) );
455	PASS( "Validate-D", SymTab::validate_D( translationUnit ) );
456	PASS( "Validate-E", SymTab::validate_E( translationUnit ) );
457	PASS( "Validate-F", SymTab::validate_F( translationUnit ) );
458
459	if ( symtabp ) {
460	deleteAll( translationUnit );
461	return EXIT_SUCCESS;
462	} // if
463
464	if ( expraltp ) {
465	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
466	acceptAll( translationUnit, printer );
467	return EXIT_SUCCESS;
468	} // if
469
470	if ( validp ) {
471	dump( translationUnit );
472	return EXIT_SUCCESS;
473	} // if
474
475	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
476	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
477	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
478	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
479	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
480
481	if ( libcfap ) {
482	// Generate the bodies of cfa library functions.
483	LibCfa::makeLibCfa( translationUnit );
484	} // if
485
486	if ( declstatsp ) {
487	CodeTools::printDeclStats( translationUnit );
488	deleteAll( translationUnit );
489	return EXIT_SUCCESS;
490	} // if
491
492	if ( bresolvep ) {
493	dump( translationUnit );
494	return EXIT_SUCCESS;
495	} // if
496
497	CodeTools::fillLocations( translationUnit );
498
499	if ( resolvprotop ) {
500	CodeTools::dumpAsResolvProto( translationUnit );
501	return EXIT_SUCCESS;
502	} // if
503
504	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
505	if ( exprp ) {
506	dump( translationUnit );
507	return EXIT_SUCCESS;
508	}
509
510	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
511
512	// fix ObjectDecl - replaces ConstructorInit nodes
513	if ( ctorinitp ) {
514	dump ( translationUnit );
515	return EXIT_SUCCESS;
516	} // if
517
518	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
519
520	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
521	}
522
523	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
524
525	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
526
527	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
528
529	if ( tuplep ) {
530	dump( translationUnit );
531	return EXIT_SUCCESS;
532	} // if
533
534	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
535
536	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
537	if ( genericsp ) {
538	dump( translationUnit );
539	return EXIT_SUCCESS;
540	} // if
541
542	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
543
544	if ( bboxp ) {
545	dump( translationUnit );
546	return EXIT_SUCCESS;
547	} // if
548	PASS( "Box", GenPoly::box( translationUnit ) );
549
550	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
551
552	// Code has been lowered to C, now we can start generation.
553
554	if ( bcodegenp ) {
555	dump( translationUnit );
556	return EXIT_SUCCESS;
557	} // if
558
559	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
560	output = new ofstream( argv[ optind ] );
561	} // if
562
563	CodeTools::fillLocations( translationUnit );
564	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
565
566	CodeGen::FixMain::fix( translationUnit, *output,
567	(PreludeDirector + "/bootloader.c").c_str() );
568	if ( output != &cout ) {
569	delete output;
570	} // if
571	} catch ( SemanticErrorException & e ) {
572	if ( errorp ) {
573	cerr << "---AST at error:---" << endl;
574	dump( translationUnit, cerr );
575	cerr << endl << "---End of AST, begin error message:---\n" << endl;
576	} // if
577	e.print();
578	if ( output != &cout ) {
579	delete output;
580	} // if
581	return EXIT_FAILURE;
582	} catch ( UnimplementedError & e ) {
583	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
584	if ( output != &cout ) {
585	delete output;
586	} // if
587	return EXIT_FAILURE;
588	} catch ( CompilerError & e ) {
589	cerr << "Compiler Error: " << e.get_what() << endl;
590	cerr << "(please report bugs to [REDACTED])" << endl;
591	if ( output != &cout ) {
592	delete output;
593	} // if
594	return EXIT_FAILURE;
595	} catch ( std::bad_alloc & ) {
596	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
597	backtrace( 1 );
598	abort();
599	} catch ( ... ) {
600	exception_ptr eptr = current_exception();
601	try {
602	if (eptr) {
603	rethrow_exception(eptr);
604	} else {
605	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
606	} // if
607	} catch( const exception & e ) {
608	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
609	} // try
610	return EXIT_FAILURE;
611	} // try
612
613	deleteAll( translationUnit );
614	Stats::print();
615	return EXIT_SUCCESS;
616	} // main
617
618
619	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
620
621	enum { PreludeDir = 128 };
622	static struct option long_opts[] = {
623	{ "colors", required_argument, nullptr, 'c' },
624	{ "gdb", no_argument, nullptr, 'g' },
625	{ "help", no_argument, nullptr, 'h' },
626	{ "libcfa", no_argument, nullptr, 'l' },
627	{ "linemarks", no_argument, nullptr, 'L' },
628	{ "no-main", no_argument, 0, 'm' },
629	{ "no-linemarks", no_argument, nullptr, 'N' },
630	{ "no-prelude", no_argument, nullptr, 'n' },
631	{ "prototypes", no_argument, nullptr, 'p' },
632	{ "deterministic-out", no_argument, nullptr, 'd' },
633	{ "old-ast", no_argument, nullptr, 'O'},
634	{ "new-ast", no_argument, nullptr, 'A'},
635	{ "print", required_argument, nullptr, 'P' },
636	{ "prelude-dir", required_argument, nullptr, PreludeDir },
637	{ "statistics", required_argument, nullptr, 'S' },
638	{ "tree", no_argument, nullptr, 't' },
639	{ "", no_argument, nullptr, 0 }, // -w
640	{ "", no_argument, nullptr, 0 }, // -W
641	{ "", no_argument, nullptr, 0 }, // -D
642	{ nullptr, 0, nullptr, 0 }
643	}; // long_opts
644
645	static const char * description[] = {
646	"diagnostic color: never, always, auto", // -c
647	"wait for gdb to attach", // -g
648	"print translator help message", // -h
649	"generate libcfa.c", // -l
650	"generate line marks", // -L
651	"do not replace main", // -m
652	"do not generate line marks", // -N
653	"do not read prelude", // -n
654	"do not generate prelude prototypes => prelude not printed", // -p
655	"only print deterministic output", // -d
656	"Use the old-ast", // -O
657	"Use the new-ast", // -A
658	"print", // -P
659	"<directory> prelude directory for debug/nodebug", // no flag
660	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
661	"building cfa standard lib", // -t
662	"", // -w
663	"", // -W
664	"", // -D
665	}; // description
666
667	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
668
669	static struct Printopts {
670	const char * name;
671	int & flag;
672	int val;
673	const char * descript;
674	} printopts[] = {
675	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
676	{ "asterr", errorp, true, "print AST on error" },
677	{ "declstats", declstatsp, true, "code property statistics" },
678	{ "parse", yydebug, true, "yacc (parsing) debug information" },
679	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
680	{ "rproto", resolvprotop, true, "resolver-proto instance" },
681	{ "rsteps", resolvep, true, "print resolver steps" },
682	{ "tree", parsep, true, "print parse tree" },
683	// code dumps
684	{ "ast", astp, true, "print AST after parsing" },
685	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
686	{ "symevt", symtabp, true, "print AST after symbol table events" },
687	{ "altexpr", expraltp, true, "print alternatives for expressions" },
688	{ "astdecl", validp, true, "print AST after declaration validation pass" },
689	{ "resolver", bresolvep, true, "print AST before resolver step" },
690	{ "astexpr", exprp, true, "print AST after expression analysis" },
691	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
692	{ "tuple", tuplep, true, "print AST after tuple expansion" },
693	{ "astgen", genericsp, true, "print AST after instantiate generics" },
694	{ "box", bboxp, true, "print AST before box step" },
695	{ "codegen", bcodegenp, true, "print AST before code generation" },
696	};
697	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
698
699	static void usage( char * argv[] ) {
700	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
701	int i = 0, j = 1; // j skips starting colon
702	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
703	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
704	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
705	cout << " -" << optstring[j] << ",";
706	} else { // no flag
707	j -= 1; // compensate
708	cout << " ";
709	} // if
710	cout << " --" << left << setw(12) << long_opts[i].name << " ";
711	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
712	cout << "one of: " << endl;
713	for ( int i = 0; i < printoptsSize; i += 1 ) {
714	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
715	} // for
716	} else {
717	cout << description[i] << endl;
718	} // if
719	} // if
720	if ( optstring[j + 1] == ':' ) j += 1;
721	} // for
722	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
723	exit( EXIT_FAILURE );
724	} // usage
725
726	static void parse_cmdline( int argc, char * argv[] ) {
727	opterr = 0; // (global) prevent getopt from printing error messages
728
729	bool Wsuppress = false, Werror = false;
730	int c;
731	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
732	switch ( c ) {
733	case 'c': // diagnostic colors
734	if ( strcmp( optarg, "always" ) == 0 ) {
735	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
736	} else if ( strcmp( optarg, "never" ) == 0 ) {
737	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
738	} else if ( strcmp( optarg, "auto" ) == 0 ) {
739	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
740	} // if
741	break;
742	case 'h': // help message
743	usage( argv ); // no return
744	break;
745	case 'l': // generate libcfa.c
746	libcfap = true;
747	break;
748	case 'L': // generate line marks
749	linemarks = true;
750	break;
751	case 'm': // do not replace main
752	nomainp = true;
753	break;
754	case 'N': // do not generate line marks
755	linemarks = false;
756	break;
757	case 'n': // do not read prelude
758	nopreludep = true;
759	break;
760	case 'p': // generate prototypes for prelude functions
761	genproto = true;
762	break;
763	case 'd': // don't print non-deterministic output
764	deterministic_output = true;
765	break;
766	case 'O': // don't print non-deterministic output
767	useNewAST = false;
768	break;
769	case 'A': // don't print non-deterministic output
770	useNewAST = true;
771	break;
772	case 'P': // print options
773	for ( int i = 0;; i += 1 ) {
774	if ( i == printoptsSize ) {
775	cout << "Unknown --print option " << optarg << endl;
776	goto Default;
777	} // if
778	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
779	printopts[i].flag = printopts[i].val;
780	break;
781	} // if
782	} // for
783	break;
784	case PreludeDir: // prelude directory for debug/nodebug, hidden
785	PreludeDirector = optarg;
786	break;
787	case 'S': // enable profiling information, argument comma separated list of names
788	Stats::parse_params( optarg );
789	break;
790	case 't': // building cfa stdlib
791	treep = true;
792	break;
793	case 'g': // wait for gdb
794	waiting_for_gdb = true;
795	break;
796	case 'w': // suppress all warnings, hidden
797	Wsuppress = true;
798	break;
799	case 'W': // coordinate gcc -W with CFA, hidden
800	if ( strcmp( optarg, "all" ) == 0 ) {
801	SemanticWarning_EnableAll();
802	} else if ( strcmp( optarg, "error" ) == 0 ) {
803	Werror = true;
804	} else {
805	char * warning = optarg;
806	Severity s;
807	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
808	warning += 3;
809	s = Severity::Suppress;
810	} else {
811	s = Severity::Warn;
812	} // if
813	SemanticWarning_Set( warning, s );
814	} // if
815	break;
816	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
817	break;
818	case '?': // unknown option
819	if ( optopt ) { // short option ?
820	cout << "Unknown option -" << (char)optopt << endl;
821	} else {
822	cout << "Unknown option " << argv[optind - 1] << endl;
823	} // if
824	goto Default;
825	case ':': // missing option
826	if ( optopt ) { // short option ?
827	cout << "Missing option for -" << (char)optopt << endl;
828	} else {
829	cout << "Missing option for " << argv[optind - 1] << endl;
830	} // if
831	goto Default;
832	Default:
833	default:
834	usage( argv ); // no return
835	} // switch
836	} // while
837
838	if ( Werror ) {
839	SemanticWarning_WarningAsError();
840	} // if
841	if ( Wsuppress ) {
842	SemanticWarning_SuppressAll();
843	} // if
844	// for ( const auto w : WarningFormats ) {
845	// cout << w.name << ' ' << (int)w.severity << endl;
846	// } // for
847	} // parse_cmdline
848
849	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
850	extern int yyparse( void );
851	extern FILE * yyin;
852	extern int yylineno;
853
854	::linkage = linkage; // set globals
855	yyin = input;
856	yylineno = 1;
857	int parseStatus = yyparse();
858
859	fclose( input );
860	if ( shouldExit \|\| parseStatus != 0 ) {
861	exit( parseStatus );
862	} // if
863	} // parse
864
865	static bool notPrelude( Declaration * decl ) {
866	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
867	} // notPrelude
868
869	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
870	list< Declaration * > decls;
871
872	if ( genproto ) {
873	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
874	} else {
875	decls = translationUnit;
876	} // if
877
878	// depending on commandline options, either generate code or dump the AST
879	if ( codegenp ) {
880	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
881	} else {
882	printAll( decls, out );
883	} // if
884	deleteAll( translationUnit );
885	} // dump
886
887	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
888	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
889	dump( translationUnit, out );
890	}
891
892	// Local Variables: //
893	// tab-width: 4 //
894	// mode: c++ //
895	// compile-command: "make install" //
896	// End: //

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