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source: src/main.cc @ a5a08a05

ADTast-experimentalenumforall-pointer-decaypthread-emulationqualifiedEnum

Last change on this file since a5a08a05 was b8ab91a, checked in by Andrew Beach <ajbeach@…>, 3 years ago
Fix Labels pass translated. This is fix label, mult-level exit and label generator.
Property mode set to `100644`
File size: 28.5 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 Oct 29 16:34:00 2021
13	// Update Count : 655
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/Waitfor.h" // for generateWaitfor
53	#include "ControlStruct/ExceptDecl.h" // for translateExcept
54	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
55	#include "ControlStruct/FixLabels.hpp" // for fixLabels
56	#include "ControlStruct/Mutate.h" // for mutate
57	#include "GenPoly/Box.h" // for box
58	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
59	#include "GenPoly/Lvalue.h" // for convertLvalue
60	#include "GenPoly/Specialize.h" // for convertSpecializations
61	#include "InitTweak/FixInit.h" // for fix
62	#include "InitTweak/GenInit.h" // for genInit
63	#include "MakeLibCfa.h" // for makeLibCfa
64	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
65	#include "Parser/TypedefTable.h" // for TypedefTable
66	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
67	#include "ResolvExpr/Resolver.h" // for resolve
68	#include "SymTab/Validate.h" // for validate
69	#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
70	#include "SynTree/Declaration.h" // for Declaration
71	#include "SynTree/Visitor.h" // for acceptAll
72	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
73	#include "Virtual/ExpandCasts.h" // for expandCasts
74
75
76	static void NewPass( const char * const name ) {
77	Stats::Heap::newPass( name );
78	using namespace Stats::Counters;
79	{
80	static auto group = build<CounterGroup>( "Pass Visitor" );
81	auto pass = build<CounterGroup>( name, group );
82	pass_visitor_stats.depth = 0;
83	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
84	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
85	}
86	{
87	static auto group = build<CounterGroup>( "Syntax Node" );
88	auto pass = build<CounterGroup>( name, group );
89	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
90	}
91	}
92
93	#define PASS( name, pass ) \
94	if ( errorp ) { cerr << name << endl; } \
95	NewPass(name); \
96	Stats::Time::StartBlock(name); \
97	pass; \
98	Stats::Time::StopBlock();
99
100	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
101	TypedefTable typedefTable;
102	DeclarationNode * parseTree = nullptr; // program parse tree
103
104	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
105
106	static string PreludeDirector = "";
107
108	static void parse_cmdline( int argc, char * argv[] );
109	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
110	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
111	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
112
113	static void backtrace( int start ) { // skip first N stack frames
114	enum { Frames = 50, }; // maximum number of stack frames
115	void * array[Frames];
116	size_t size = ::backtrace( array, Frames );
117	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
118
119	*index( messages[0], '(' ) = '\0'; // find executable name
120	cerr << "Stack back trace for: " << messages[0] << endl;
121
122	// skip last 2 stack frames after main
123	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
124	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
125
126	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
127	if ( *p == '(' ) {
128	mangled_name = p;
129	} else if ( *p == '+' ) {
130	offset_begin = p;
131	} else if ( *p == ')' ) {
132	offset_end = p;
133	break;
134	} // if
135	} // for
136
137	// if line contains symbol, attempt to demangle
138	int frameNo = i - start;
139	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
140	*mangled_name++ = '\0'; // delimit strings
141	*offset_begin++ = '\0';
142	*offset_end++ = '\0';
143
144	int status;
145	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
146	// bug in __cxa_demangle for single-character lower-case non-mangled names
147	if ( status == 0 ) { // demangling successful ?
148	cerr << "(" << frameNo << ") " << messages[i] << " : "
149	<< real_name << "+" << offset_begin << offset_end << endl;
150	} else { // otherwise, output mangled name
151	cerr << "(" << frameNo << ") " << messages[i] << " : "
152	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
153	} // if
154
155	free( real_name );
156	} else { // otherwise, print the whole line
157	cerr << "(" << frameNo << ") " << messages[i] << endl;
158	} // if
159	} // for
160
161	free( messages );
162	} // backtrace
163
164	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
165
166	static void _Signal(struct sigaction & act, int sig, int flags ) {
167	act.sa_flags = flags;
168
169	if ( sigaction( sig, &act, nullptr ) == -1 ) {
170	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
171	_exit( EXIT_FAILURE );
172	} // if
173	}
174
175	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
176	struct sigaction act;
177	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
178	_Signal(act, sig, flags);
179	} // Signal
180
181	static void Signal( int sig, void (* handler)(int), int flags ) {
182	struct sigaction act;
183	act.sa_handler = handler;
184	_Signal(act, sig, flags);
185	} // Signal
186
187	static void sigSegvBusHandler( SIGPARMS ) {
188	if ( sfp->si_addr == nullptr ) {
189	cerr << "Null pointer (nullptr) dereference." << endl;
190	} else {
191	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
192	<< "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;
193	} // if
194	backtrace( 2 ); // skip first 2 stack frames
195	abort(); // cause core dump for debugging
196	} // sigSegvBusHandler
197
198	static void sigFpeHandler( SIGPARMS ) {
199	const char * msg;
200
201	switch ( sfp->si_code ) {
202	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
203	case FPE_FLTOVF: msg = "overflow"; break;
204	case FPE_FLTUND: msg = "underflow"; break;
205	case FPE_FLTRES: msg = "inexact result"; break;
206	case FPE_FLTINV: msg = "invalid operation"; break;
207	default: msg = "unknown";
208	} // choose
209	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
210	<< "Possible cause is constant-expression evaluation invalid." << endl;
211	backtrace( 2 ); // skip first 2 stack frames
212	abort(); // cause core dump for debugging
213	} // sigFpeHandler
214
215	static void sigAbortHandler( SIGPARMS ) {
216	backtrace( 6 ); // skip first 6 stack frames
217	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
218	raise( SIGABRT ); // reraise SIGABRT
219	} // sigAbortHandler
220
221	int main( int argc, char * argv[] ) {
222	FILE * input; // use FILE rather than istream because yyin is FILE
223	ostream * output = & cout;
224	list< Declaration * > translationUnit;
225
226	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
227	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
228	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
229	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
230
231	// cout << "main" << endl;
232	// for ( int i = 0; i < argc; i += 1 ) {
233	// cout << '\t' << argv[i] << endl;
234	// } // for
235
236	parse_cmdline( argc, argv ); // process command-line arguments
237	CodeGen::FixMain::setReplaceMain( !nomainp );
238
239	if ( waiting_for_gdb ) {
240	cerr << "Waiting for gdb" << endl;
241	cerr << "run :" << endl;
242	cerr << " gdb attach " << getpid() << endl;
243	raise(SIGSTOP);
244	} // if
245
246	try {
247	// choose to read the program from a file or stdin
248	if ( optind < argc ) { // any commands after the flags ? => input file name
249	input = fopen( argv[ optind ], "r" );
250	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
251	optind += 1;
252	} else { // no input file name
253	input = stdin;
254	} // if
255
256	Stats::Time::StartGlobal();
257	NewPass("Parse");
258	Stats::Time::StartBlock("Parse");
259
260	// read in the builtins, extras, and the prelude
261	if ( ! nopreludep ) { // include gcc builtins
262	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
263
264	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
265
266	// Read to gcc builtins, if not generating the cfa library
267	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
268	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
269	parse( gcc_builtins, LinkageSpec::Compiler );
270
271	// read the extra prelude in, if not generating the cfa library
272	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
273	assertf( extras, "cannot open extras.cf\n" );
274	parse( extras, LinkageSpec::BuiltinC );
275
276	if ( ! libcfap ) {
277	// read the prelude in, if not generating the cfa library
278	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
279	assertf( prelude, "cannot open prelude.cfa\n" );
280	parse( prelude, LinkageSpec::Intrinsic );
281
282	// Read to cfa builtins, if not generating the cfa library
283	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
284	assertf( builtins, "cannot open builtins.cf\n" );
285	parse( builtins, LinkageSpec::BuiltinCFA );
286	} // if
287	} // if
288
289	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
290
291	if ( parsep ) {
292	parseTree->printList( cout );
293	delete parseTree;
294	return EXIT_SUCCESS;
295	} // if
296
297	buildList( parseTree, translationUnit );
298	delete parseTree;
299	parseTree = nullptr;
300
301	if ( astp ) {
302	dump( translationUnit );
303	return EXIT_SUCCESS;
304	} // if
305
306	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
307	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
308	// works okay for now.
309	CodeTools::fillLocations( translationUnit );
310	Stats::Time::StopBlock();
311
312	PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
313	if ( exdeclp ) {
314	dump( translationUnit );
315	return EXIT_SUCCESS;
316	} // if
317
318	// add the assignment statement after the initialization of a type parameter
319	PASS( "Validate", SymTab::validate( translationUnit, symtabp ) );
320	if ( symtabp ) {
321	deleteAll( translationUnit );
322	return EXIT_SUCCESS;
323	} // if
324
325	if ( expraltp ) {
326	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
327	acceptAll( translationUnit, printer );
328	return EXIT_SUCCESS;
329	} // if
330
331	if ( validp ) {
332	dump( translationUnit );
333	return EXIT_SUCCESS;
334	} // if
335
336	PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
337
338	CodeTools::fillLocations( translationUnit );
339
340	if( useNewAST ) {
341	if (Stats::Counters::enabled) {
342	ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
343	ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
344	}
345	auto transUnit = convert( move( translationUnit ) );
346
347	forceFillCodeLocations( transUnit );
348
349	PASS( "Fix Labels", ControlStruct::fixLabels( transUnit ) );
350	PASS( "Fix Names", CodeGen::fixNames( transUnit ) );
351	PASS( "Gen Init", InitTweak::genInit( transUnit ) );
352	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
353
354	if ( libcfap ) {
355	// Generate the bodies of cfa library functions.
356	LibCfa::makeLibCfa( transUnit );
357	} // if
358
359	if ( declstatsp ) {
360	printDeclStats( transUnit );
361	return EXIT_SUCCESS;
362	} // if
363
364	if ( bresolvep ) {
365	dump( move( transUnit ) );
366	return EXIT_SUCCESS;
367	} // if
368
369	if ( resolvprotop ) {
370	dumpAsResolverProto( transUnit );
371	return EXIT_SUCCESS;
372	} // if
373
374	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
375	if ( exprp ) {
376	dump( move( transUnit ) );
377	return EXIT_SUCCESS;
378	} // if
379
380	forceFillCodeLocations( transUnit );
381
382	PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
383
384	translationUnit = convert( move( transUnit ) );
385	} else {
386	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
387	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
388	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
389	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
390
391	if ( libcfap ) {
392	// Generate the bodies of cfa library functions.
393	LibCfa::makeLibCfa( translationUnit );
394	} // if
395
396	if ( declstatsp ) {
397	CodeTools::printDeclStats( translationUnit );
398	deleteAll( translationUnit );
399	return EXIT_SUCCESS;
400	} // if
401
402	if ( bresolvep ) {
403	dump( translationUnit );
404	return EXIT_SUCCESS;
405	} // if
406
407	CodeTools::fillLocations( translationUnit );
408
409	if ( resolvprotop ) {
410	CodeTools::dumpAsResolvProto( translationUnit );
411	return EXIT_SUCCESS;
412	} // if
413
414	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
415	if ( exprp ) {
416	dump( translationUnit );
417	return EXIT_SUCCESS;
418	}
419
420	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
421	}
422
423	// fix ObjectDecl - replaces ConstructorInit nodes
424	if ( ctorinitp ) {
425	dump ( translationUnit );
426	return EXIT_SUCCESS;
427	} // if
428
429	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
430
431	PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
432
433	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
434
435	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
436
437	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
438
439	if ( tuplep ) {
440	dump( translationUnit );
441	return EXIT_SUCCESS;
442	} // if
443
444	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
445
446	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
447	if ( genericsp ) {
448	dump( translationUnit );
449	return EXIT_SUCCESS;
450	} // if
451
452	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
453
454	if ( bboxp ) {
455	dump( translationUnit );
456	return EXIT_SUCCESS;
457	} // if
458	PASS( "Box", GenPoly::box( translationUnit ) );
459
460	PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
461
462	// Code has been lowered to C, now we can start generation.
463
464	if ( bcodegenp ) {
465	dump( translationUnit );
466	return EXIT_SUCCESS;
467	} // if
468
469	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
470	output = new ofstream( argv[ optind ] );
471	} // if
472
473	CodeTools::fillLocations( translationUnit );
474	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
475
476	CodeGen::FixMain::fix( translationUnit, *output,
477	(PreludeDirector + "/bootloader.c").c_str() );
478	if ( output != &cout ) {
479	delete output;
480	} // if
481	} catch ( SemanticErrorException & e ) {
482	if ( errorp ) {
483	cerr << "---AST at error:---" << endl;
484	dump( translationUnit, cerr );
485	cerr << endl << "---End of AST, begin error message:---\n" << endl;
486	} // if
487	e.print();
488	if ( output != &cout ) {
489	delete output;
490	} // if
491	return EXIT_FAILURE;
492	} catch ( UnimplementedError & e ) {
493	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
494	if ( output != &cout ) {
495	delete output;
496	} // if
497	return EXIT_FAILURE;
498	} catch ( CompilerError & e ) {
499	cerr << "Compiler Error: " << e.get_what() << endl;
500	cerr << "(please report bugs to [REDACTED])" << endl;
501	if ( output != &cout ) {
502	delete output;
503	} // if
504	return EXIT_FAILURE;
505	} catch ( std::bad_alloc & ) {
506	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
507	backtrace( 1 );
508	abort();
509	} catch ( ... ) {
510	exception_ptr eptr = current_exception();
511	try {
512	if (eptr) {
513	rethrow_exception(eptr);
514	} else {
515	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
516	} // if
517	} catch( const exception & e ) {
518	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
519	} // try
520	return EXIT_FAILURE;
521	} // try
522
523	deleteAll( translationUnit );
524	Stats::print();
525	return EXIT_SUCCESS;
526	} // main
527
528
529	static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
530
531	enum { PreludeDir = 128 };
532	static struct option long_opts[] = {
533	{ "colors", required_argument, nullptr, 'c' },
534	{ "gdb", no_argument, nullptr, 'g' },
535	{ "help", no_argument, nullptr, 'h' },
536	{ "libcfa", no_argument, nullptr, 'l' },
537	{ "linemarks", no_argument, nullptr, 'L' },
538	{ "no-main", no_argument, 0, 'm' },
539	{ "no-linemarks", no_argument, nullptr, 'N' },
540	{ "no-prelude", no_argument, nullptr, 'n' },
541	{ "prototypes", no_argument, nullptr, 'p' },
542	{ "deterministic-out", no_argument, nullptr, 'd' },
543	{ "old-ast", no_argument, nullptr, 'O'},
544	{ "new-ast", no_argument, nullptr, 'A'},
545	{ "print", required_argument, nullptr, 'P' },
546	{ "prelude-dir", required_argument, nullptr, PreludeDir },
547	{ "statistics", required_argument, nullptr, 'S' },
548	{ "tree", no_argument, nullptr, 't' },
549	{ "", no_argument, nullptr, 0 }, // -w
550	{ "", no_argument, nullptr, 0 }, // -W
551	{ "", no_argument, nullptr, 0 }, // -D
552	{ nullptr, 0, nullptr, 0 }
553	}; // long_opts
554
555	static const char * description[] = {
556	"diagnostic color: never, always, auto", // -c
557	"wait for gdb to attach", // -g
558	"print translator help message", // -h
559	"generate libcfa.c", // -l
560	"generate line marks", // -L
561	"do not replace main", // -m
562	"do not generate line marks", // -N
563	"do not read prelude", // -n
564	"do not generate prelude prototypes => prelude not printed", // -p
565	"only print deterministic output", // -d
566	"Use the old-ast", // -O
567	"Use the new-ast", // -A
568	"print", // -P
569	"<directory> prelude directory for debug/nodebug", // no flag
570	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
571	"building cfa standard lib", // -t
572	"", // -w
573	"", // -W
574	"", // -D
575	}; // description
576
577	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
578
579	static struct Printopts {
580	const char * name;
581	int & flag;
582	int val;
583	const char * descript;
584	} printopts[] = {
585	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
586	{ "asterr", errorp, true, "print AST on error" },
587	{ "declstats", declstatsp, true, "code property statistics" },
588	{ "parse", yydebug, true, "yacc (parsing) debug information" },
589	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
590	{ "rproto", resolvprotop, true, "resolver-proto instance" },
591	{ "rsteps", resolvep, true, "print resolver steps" },
592	{ "tree", parsep, true, "print parse tree" },
593	// code dumps
594	{ "ast", astp, true, "print AST after parsing" },
595	{ "exdecl", exdeclp, true, "print AST after translating exception decls" },
596	{ "symevt", symtabp, true, "print AST after symbol table events" },
597	{ "altexpr", expraltp, true, "print alternatives for expressions" },
598	{ "astdecl", validp, true, "print AST after declaration validation pass" },
599	{ "resolver", bresolvep, true, "print AST before resolver step" },
600	{ "astexpr", exprp, true, "print AST after expression analysis" },
601	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
602	{ "tuple", tuplep, true, "print AST after tuple expansion" },
603	{ "astgen", genericsp, true, "print AST after instantiate generics" },
604	{ "box", bboxp, true, "print AST before box step" },
605	{ "codegen", bcodegenp, true, "print AST before code generation" },
606	};
607	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
608
609	static void usage( char * argv[] ) {
610	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
611	int i = 0, j = 1; // j skips starting colon
612	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
613	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
614	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
615	cout << " -" << optstring[j] << ",";
616	} else { // no flag
617	j -= 1; // compensate
618	cout << " ";
619	} // if
620	cout << " --" << left << setw(12) << long_opts[i].name << " ";
621	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
622	cout << "one of: " << endl;
623	for ( int i = 0; i < printoptsSize; i += 1 ) {
624	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
625	} // for
626	} else {
627	cout << description[i] << endl;
628	} // if
629	} // if
630	if ( optstring[j + 1] == ':' ) j += 1;
631	} // for
632	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
633	exit( EXIT_FAILURE );
634	} // usage
635
636	static void parse_cmdline( int argc, char * argv[] ) {
637	opterr = 0; // (global) prevent getopt from printing error messages
638
639	bool Wsuppress = false, Werror = false;
640	int c;
641	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
642	switch ( c ) {
643	case 'c': // diagnostic colors
644	if ( strcmp( optarg, "always" ) == 0 ) {
645	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
646	} else if ( strcmp( optarg, "never" ) == 0 ) {
647	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
648	} else if ( strcmp( optarg, "auto" ) == 0 ) {
649	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
650	} // if
651	break;
652	case 'h': // help message
653	usage( argv ); // no return
654	break;
655	case 'l': // generate libcfa.c
656	libcfap = true;
657	break;
658	case 'L': // generate line marks
659	linemarks = true;
660	break;
661	case 'm': // do not replace main
662	nomainp = true;
663	break;
664	case 'N': // do not generate line marks
665	linemarks = false;
666	break;
667	case 'n': // do not read prelude
668	nopreludep = true;
669	break;
670	case 'p': // generate prototypes for prelude functions
671	genproto = true;
672	break;
673	case 'd': // don't print non-deterministic output
674	deterministic_output = true;
675	break;
676	case 'O': // don't print non-deterministic output
677	useNewAST = false;
678	break;
679	case 'A': // don't print non-deterministic output
680	useNewAST = true;
681	break;
682	case 'P': // print options
683	for ( int i = 0;; i += 1 ) {
684	if ( i == printoptsSize ) {
685	cout << "Unknown --print option " << optarg << endl;
686	goto Default;
687	} // if
688	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
689	printopts[i].flag = printopts[i].val;
690	break;
691	} // if
692	} // for
693	break;
694	case PreludeDir: // prelude directory for debug/nodebug, hidden
695	PreludeDirector = optarg;
696	break;
697	case 'S': // enable profiling information, argument comma separated list of names
698	Stats::parse_params( optarg );
699	break;
700	case 't': // building cfa stdlib
701	treep = true;
702	break;
703	case 'g': // wait for gdb
704	waiting_for_gdb = true;
705	break;
706	case 'w': // suppress all warnings, hidden
707	Wsuppress = true;
708	break;
709	case 'W': // coordinate gcc -W with CFA, hidden
710	if ( strcmp( optarg, "all" ) == 0 ) {
711	SemanticWarning_EnableAll();
712	} else if ( strcmp( optarg, "error" ) == 0 ) {
713	Werror = true;
714	} else {
715	char * warning = optarg;
716	Severity s;
717	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
718	warning += 3;
719	s = Severity::Suppress;
720	} else {
721	s = Severity::Warn;
722	} // if
723	SemanticWarning_Set( warning, s );
724	} // if
725	break;
726	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
727	break;
728	case '?': // unknown option
729	if ( optopt ) { // short option ?
730	cout << "Unknown option -" << (char)optopt << endl;
731	} else {
732	cout << "Unknown option " << argv[optind - 1] << endl;
733	} // if
734	goto Default;
735	case ':': // missing option
736	if ( optopt ) { // short option ?
737	cout << "Missing option for -" << (char)optopt << endl;
738	} else {
739	cout << "Missing option for " << argv[optind - 1] << endl;
740	} // if
741	goto Default;
742	Default:
743	default:
744	usage( argv ); // no return
745	} // switch
746	} // while
747
748	if ( Werror ) {
749	SemanticWarning_WarningAsError();
750	} // if
751	if ( Wsuppress ) {
752	SemanticWarning_SuppressAll();
753	} // if
754	// for ( const auto w : WarningFormats ) {
755	// cout << w.name << ' ' << (int)w.severity << endl;
756	// } // for
757	} // parse_cmdline
758
759	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
760	extern int yyparse( void );
761	extern FILE * yyin;
762	extern int yylineno;
763
764	::linkage = linkage; // set globals
765	yyin = input;
766	yylineno = 1;
767	int parseStatus = yyparse();
768
769	fclose( input );
770	if ( shouldExit \|\| parseStatus != 0 ) {
771	exit( parseStatus );
772	} // if
773	} // parse
774
775	static bool notPrelude( Declaration * decl ) {
776	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
777	} // notPrelude
778
779	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
780	list< Declaration * > decls;
781
782	if ( genproto ) {
783	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
784	} else {
785	decls = translationUnit;
786	} // if
787
788	// depending on commandline options, either generate code or dump the AST
789	if ( codegenp ) {
790	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
791	} else {
792	printAll( decls, out );
793	} // if
794	deleteAll( translationUnit );
795	} // dump
796
797	static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
798	std::list< Declaration * > translationUnit = convert( move( transUnit ) );
799	dump( translationUnit, out );
800	}
801
802	// Local Variables: //
803	// tab-width: 4 //
804	// mode: c++ //
805	// compile-command: "make install" //
806	// End: //

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