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source: src/main.cc @ 8e1467d

ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-astnew-ast-unique-exprpthread-emulationqualifiedEnum

Last change on this file since 8e1467d was f53acdf8, checked in by Thierry Delisle <tdelisle@…>, 5 years ago
Merge branch 'master' into new-ast
Property mode set to `100644`
File size: 23.3 KB

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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 : Peter A. Buhr
12	// Last Modified On : Wed Jun 5 20:35:13 2019
13	// Update Count : 601
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 <signal.h> // for signal, SIGABRT, SIGSEGV
20	#include <cassert> // for assertf
21	#include <cstdio> // for fopen, FILE, fclose, stdin
22	#include <cstdlib> // for exit, free, abort, EXIT_F...
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	#include "AST/Convert.hpp"
32	#include "CompilationState.h"
33	#include "../config.h" // for CFA_LIBDIR
34	#include "CodeGen/FixMain.h" // for FixMain
35	#include "CodeGen/FixNames.h" // for fixNames
36	#include "CodeGen/Generate.h" // for generate
37	#include "CodeTools/DeclStats.h" // for printDeclStats
38	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
39	#include "CodeTools/TrackLoc.h" // for fillLocations
40	#include "Common/CompilerError.h" // for CompilerError
41	#include "Common/Stats.h"
42	#include "Common/PassVisitor.h"
43	#include "Common/SemanticError.h" // for SemanticError
44	#include "Common/UnimplementedError.h" // for UnimplementedError
45	#include "Common/utility.h" // for deleteAll, filter, printAll
46	#include "Concurrency/Waitfor.h" // for generateWaitfor
47	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
48	#include "ControlStruct/Mutate.h" // for mutate
49	#include "GenPoly/Box.h" // for box
50	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
51	#include "GenPoly/Lvalue.h" // for convertLvalue
52	#include "GenPoly/Specialize.h" // for convertSpecializations
53	#include "InitTweak/FixInit.h" // for fix
54	#include "InitTweak/GenInit.h" // for genInit
55	#include "MakeLibCfa.h" // for makeLibCfa
56	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
57	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
58	#include "Parser/TypedefTable.h" // for TypedefTable
59	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
60	#include "ResolvExpr/Resolver.h" // for resolve
61	#include "SymTab/Validate.h" // for validate
62	#include "SynTree/Declaration.h" // for Declaration
63	#include "SynTree/Visitor.h" // for acceptAll
64	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
65	#include "Virtual/ExpandCasts.h" // for expandCasts
66
67	using namespace std;
68
69	static void NewPass( const char * const name ) {
70	Stats::Heap::newPass( name );
71	using namespace Stats::Counters;
72	{
73	static auto group = build<CounterGroup>( "Pass Visitor" );
74	auto pass = build<CounterGroup>( name, group );
75	pass_visitor_stats.depth = 0;
76	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
77	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
78	}
79	{
80	static auto group = build<CounterGroup>( "Syntax Node" );
81	auto pass = build<CounterGroup>( name, group );
82	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
83	}
84	}
85
86	#define PASS( name, pass ) \
87	if ( errorp ) { cerr << name << endl; } \
88	NewPass(name); \
89	Stats::Time::StartBlock(name); \
90	pass; \
91	Stats::Time::StopBlock();
92
93	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
94	TypedefTable typedefTable;
95	DeclarationNode * parseTree = nullptr; // program parse tree
96
97	static std::string PreludeDirector = "";
98
99	static void parse_cmdline( int argc, char argv[], const char & filename );
100	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
101	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
102
103	static void backtrace( int start ) { // skip first N stack frames
104	enum { Frames = 50 };
105	void * array[Frames];
106	int size = ::backtrace( array, Frames );
107	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
108
109	*index( messages[0], '(' ) = '\0'; // find executable name
110	cerr << "Stack back trace for: " << messages[0] << endl;
111
112	// skip last 2 stack frames after main
113	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
114	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
115	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
116	if ( *p == '(' ) {
117	mangled_name = p;
118	} else if ( *p == '+' ) {
119	offset_begin = p;
120	} else if ( *p == ')' ) {
121	offset_end = p;
122	break;
123	} // if
124	} // for
125
126	// if line contains symbol, attempt to demangle
127	int frameNo = i - start;
128	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
129	*mangled_name++ = '\0'; // delimit strings
130	*offset_begin++ = '\0';
131	*offset_end++ = '\0';
132
133	int status;
134	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
135	// bug in __cxa_demangle for single-character lower-case non-mangled names
136	if ( status == 0 ) { // demangling successful ?
137	cerr << "(" << frameNo << ") " << messages[i] << " : "
138	<< real_name << "+" << offset_begin << offset_end << endl;
139	} else { // otherwise, output mangled name
140	cerr << "(" << frameNo << ") " << messages[i] << " : "
141	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
142	} // if
143
144	free( real_name );
145	} else { // otherwise, print the whole line
146	cerr << "(" << frameNo << ") " << messages[i] << endl;
147	} // if
148	} // for
149
150	free( messages );
151	} // backtrace
152
153	static void sigSegvBusHandler( int sig_num ) {
154	cerr << "CFA runtime error program cfa-cpp terminated with "
155	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
156	<< "." << endl;
157	backtrace( 2 ); // skip first 2 stack frames
158	//_exit( EXIT_FAILURE );
159	abort(); // cause core dump for debugging
160	} // sigSegvBusHandler
161
162	static void sigAbortHandler( __attribute__((unused)) int sig_num ) {
163	backtrace( 6 ); // skip first 6 stack frames
164	signal( SIGABRT, SIG_DFL); // reset default signal handler
165	raise( SIGABRT ); // reraise SIGABRT
166	} // sigAbortHandler
167
168
169	int main( int argc, char * argv[] ) {
170	FILE * input; // use FILE rather than istream because yyin is FILE
171	ostream * output = & cout;
172	const char * filename = nullptr;
173	list< Declaration * > translationUnit;
174
175	signal( SIGSEGV, sigSegvBusHandler );
176	signal( SIGBUS, sigSegvBusHandler );
177	signal( SIGABRT, sigAbortHandler );
178
179	// std::cout << "main" << std::endl;
180	// for ( int i = 0; i < argc; i += 1 ) {
181	// std::cout << '\t' << argv[i] << std::endl;
182	// } // for
183
184	parse_cmdline( argc, argv, filename ); // process command-line arguments
185	CodeGen::FixMain::setReplaceMain( !nomainp );
186
187	try {
188	// choose to read the program from a file or stdin
189	if ( optind < argc ) { // any commands after the flags ? => input file name
190	input = fopen( argv[ optind ], "r" );
191	assertf( input, "cannot open %s\n", argv[ optind ] );
192	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
193	if ( filename == nullptr ) filename = argv[ optind ];
194	// prelude filename comes in differently
195	if ( libcfap ) filename = "prelude.cfa";
196	optind += 1;
197	} else { // no input file name
198	input = stdin;
199	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
200	// a fake name along
201	if ( filename == nullptr ) filename = "stdin";
202	} // if
203
204	Stats::Time::StartGlobal();
205	NewPass("Parse");
206	Stats::Time::StartBlock("Parse");
207
208	// read in the builtins, extras, and the prelude
209	if ( ! nopreludep ) { // include gcc builtins
210	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
211
212	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
213
214	// Read to gcc builtins, if not generating the cfa library
215	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
216	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
217	parse( gcc_builtins, LinkageSpec::Compiler );
218
219	// read the extra prelude in, if not generating the cfa library
220	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
221	assertf( extras, "cannot open extras.cf\n" );
222	parse( extras, LinkageSpec::BuiltinC );
223
224	if ( ! libcfap ) {
225	// read the prelude in, if not generating the cfa library
226	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
227	assertf( prelude, "cannot open prelude.cfa\n" );
228	parse( prelude, LinkageSpec::Intrinsic );
229
230	// Read to cfa builtins, if not generating the cfa library
231	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
232	assertf( builtins, "cannot open builtins.cf\n" );
233	parse( builtins, LinkageSpec::BuiltinCFA );
234	} // if
235	} // if
236
237	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
238
239	if ( parsep ) {
240	parseTree->printList( cout );
241	delete parseTree;
242	return EXIT_SUCCESS;
243	} // if
244
245	buildList( parseTree, translationUnit );
246	delete parseTree;
247	parseTree = nullptr;
248
249	if ( astp ) {
250	dump( translationUnit );
251	return EXIT_SUCCESS;
252	} // if
253
254	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
255	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
256	// works okay for now.
257	CodeTools::fillLocations( translationUnit );
258	Stats::Time::StopBlock();
259
260	// add the assignment statement after the initialization of a type parameter
261	PASS( "Validate", SymTab::validate( translationUnit, symtabp ) );
262	if ( symtabp ) {
263	deleteAll( translationUnit );
264	return EXIT_SUCCESS;
265	} // if
266
267	if ( expraltp ) {
268	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
269	acceptAll( translationUnit, printer );
270	return EXIT_SUCCESS;
271	} // if
272
273	if ( validp ) {
274	dump( translationUnit );
275	return EXIT_SUCCESS;
276	} // if
277
278	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
279	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
280	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
281	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
282	if ( libcfap ) {
283	// generate the bodies of cfa library functions
284	LibCfa::makeLibCfa( translationUnit );
285	} // if
286
287	if ( declstatsp ) {
288	CodeTools::printDeclStats( translationUnit );
289	deleteAll( translationUnit );
290	return EXIT_SUCCESS;
291	} // if
292
293	if ( bresolvep ) {
294	dump( translationUnit );
295	return EXIT_SUCCESS;
296	} // if
297
298	CodeTools::fillLocations( translationUnit );
299
300	if ( resolvprotop ) {
301	CodeTools::dumpAsResolvProto( translationUnit );
302	return EXIT_SUCCESS;
303	} // if
304
305	// PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
306	{
307	auto transUnit = convert( move( translationUnit ) );
308	PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
309	translationUnit = convert( move( transUnit ) );
310	}
311	if ( exprp ) {
312	dump( translationUnit );
313	return EXIT_SUCCESS;
314	} // if
315
316	// fix ObjectDecl - replaces ConstructorInit nodes
317	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
318	if ( ctorinitp ) {
319	dump ( translationUnit );
320	return EXIT_SUCCESS;
321	} // if
322
323	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
324
325	PASS( "Translate EHM" , ControlStruct::translateEHM( translationUnit ) );
326
327	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
328
329	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
330
331	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
332
333	if ( tuplep ) {
334	dump( translationUnit );
335	return EXIT_SUCCESS;
336	} // if
337
338	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
339
340	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
341	if ( genericsp ) {
342	dump( translationUnit );
343	return EXIT_SUCCESS;
344	} // if
345	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
346
347
348	if ( bboxp ) {
349	dump( translationUnit );
350	return EXIT_SUCCESS;
351	} // if
352	PASS( "Box", GenPoly::box( translationUnit ) );
353
354	if ( bcodegenp ) {
355	dump( translationUnit );
356	return EXIT_SUCCESS;
357	} // if
358
359	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
360	output = new ofstream( argv[ optind ] );
361	} // if
362
363	CodeTools::fillLocations( translationUnit );
364	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
365
366	CodeGen::FixMain::fix( *output, (PreludeDirector + "/bootloader.c").c_str() );
367	if ( output != &cout ) {
368	delete output;
369	} // if
370	} catch ( SemanticErrorException &e ) {
371	if ( errorp ) {
372	cerr << "---AST at error:---" << endl;
373	dump( translationUnit, cerr );
374	cerr << endl << "---End of AST, begin error message:---\n" << endl;
375	} // if
376	e.print();
377	if ( output != &cout ) {
378	delete output;
379	} // if
380	return EXIT_FAILURE;
381	} catch ( UnimplementedError &e ) {
382	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
383	if ( output != &cout ) {
384	delete output;
385	} // if
386	return EXIT_FAILURE;
387	} catch ( CompilerError &e ) {
388	cerr << "Compiler Error: " << e.get_what() << endl;
389	cerr << "(please report bugs to [REDACTED])" << endl;
390	if ( output != &cout ) {
391	delete output;
392	} // if
393	return EXIT_FAILURE;
394	} catch ( ... ) {
395	std::exception_ptr eptr = std::current_exception();
396	try {
397	if (eptr) {
398	std::rethrow_exception(eptr);
399	} else {
400	std::cerr << "Exception Uncaught and Unknown" << std::endl;
401	} // if
402	} catch(const std::exception& e) {
403	std::cerr << "Uncaught Exception \"" << e.what() << "\"\n";
404	} // try
405	return EXIT_FAILURE;
406	} // try
407
408	deleteAll( translationUnit );
409	Stats::print();
410	return EXIT_SUCCESS;
411	} // main
412
413
414	static const char optstring[] = ":hlLmNnpP:S:twW:D:F:";
415
416	enum { PreludeDir = 128 };
417	static struct option long_opts[] = {
418	{ "help", no_argument, nullptr, 'h' },
419	{ "libcfa", no_argument, nullptr, 'l' },
420	{ "linemarks", no_argument, nullptr, 'L' },
421	{ "no-main", no_argument, 0, 'm' },
422	{ "no-linemarks", no_argument, nullptr, 'N' },
423	{ "no-prelude", no_argument, nullptr, 'n' },
424	{ "prototypes", no_argument, nullptr, 'p' },
425	{ "print", required_argument, nullptr, 'P' },
426	{ "prelude-dir", required_argument, nullptr, PreludeDir },
427	{ "statistics", required_argument, nullptr, 'S' },
428	{ "tree", no_argument, nullptr, 't' },
429	{ "", no_argument, nullptr, 0 }, // -w
430	{ "", no_argument, nullptr, 0 }, // -W
431	{ "", no_argument, nullptr, 0 }, // -D
432	{ "", no_argument, nullptr, 0 }, // -F
433	{ nullptr, 0, nullptr, 0 }
434	}; // long_opts
435
436	static const char * description[] = {
437	"print help message", // -h
438	"generate libcfa.c", // -l
439	"generate line marks", // -L
440	"do not replace main", // -m
441	"do not generate line marks", // -N
442	"do not read prelude", // -n
443	"generate prototypes for prelude functions", // -p
444	"print", // -P
445	"<directory> prelude directory for debug/nodebug", // no flag
446	"<option-list> enable profiling information:\n counters,heap,time,all,none", // -S
447	"build in tree", // -t
448	"", // -w
449	"", // -W
450	"", // -D
451	"", // -F
452	}; // description
453
454	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
455
456	static struct Printopts {
457	const char * name;
458	int & flag;
459	int val;
460	const char * descript;
461	} printopts[] = {
462	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
463	{ "asterr", errorp, true, "print AST on error" },
464	{ "declstats", declstatsp, true, "code property statistics" },
465	{ "parse", yydebug, true, "yacc (parsing) debug information" },
466	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
467	{ "rproto", resolvprotop, true, "resolver-proto instance" },
468	{ "rsteps", resolvep, true, "print resolver steps" },
469	{ "tree", parsep, true, "print parse tree" },
470	// code dumps
471	{ "ast", astp, true, "print AST after parsing" },
472	{ "symevt", symtabp, true, "print AST after symbol table events" },
473	{ "altexpr", expraltp, true, "print alternatives for expressions" },
474	{ "astdecl", validp, true, "print AST after declaration validation pass" },
475	{ "resolver", bresolvep, true, "print AST before resolver step" },
476	{ "astexpr", exprp, true, "print AST after expression analysis" },
477	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
478	{ "tuple", tuplep, true, "print AST after tuple expansion" },
479	{ "astgen", genericsp, true, "print AST after instantiate generics" },
480	{ "box", bboxp, true, "print AST before box step" },
481	{ "codegen", bcodegenp, true, "print AST before code generation" },
482	};
483	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
484
485	static void usage( char *argv[] ) {
486	cout << "Usage: " << argv[0] << " options are:" << endl;
487	int i = 0, j = 1; // j skips starting colon
488	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
489	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
490	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
491	cout << " -" << optstring[j] << ",";
492	} else { // no flag
493	j -= 1; // compensate
494	cout << " ";
495	} // if
496	cout << " --" << left << setw(12) << long_opts[i].name << " ";
497	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
498	cout << "one of: " << endl;
499	for ( int i = 0; i < printoptsSize; i += 1 ) {
500	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
501	} // for
502	} else {
503	cout << description[i] << endl;
504	} // if
505	} // if
506	if ( optstring[j + 1] == ':' ) j += 1;
507	} // for
508	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
509	exit( EXIT_FAILURE );
510	} // usage
511
512	static void parse_cmdline( int argc, char * argv[], const char *& filename ) {
513	opterr = 0; // (global) prevent getopt from printing error messages
514
515	bool Wsuppress = false, Werror = false;
516	int c;
517	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
518	switch ( c ) {
519	case 'h': // help message
520	usage( argv ); // no return
521	break;
522	case 'l': // generate libcfa.c
523	libcfap = true;
524	break;
525	case 'L': // generate line marks
526	linemarks = true;
527	break;
528	case 'm': // do not replace main
529	nomainp = true;
530	break;
531	case 'N': // do not generate line marks
532	linemarks = false;
533	break;
534	case 'n': // do not read prelude
535	nopreludep = true;
536	break;
537	case 'p': // generate prototypes for prelude functions
538	genproto = true;
539	break;
540	case 'P': // print options
541	for ( int i = 0;; i += 1 ) {
542	if ( i == printoptsSize ) {
543	cout << "Unknown --print option " << optarg << endl;
544	goto Default;
545	} // if
546	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
547	printopts[i].flag = printopts[i].val;
548	break;
549	} // if
550	} // for
551	break;
552	case PreludeDir: // prelude directory for debug/nodebug, hidden
553	PreludeDirector = optarg;
554	break;
555	case 'S': // enable profiling information, argument comma separated list of names
556	Stats::parse_params( optarg );
557	break;
558	case 't': // build in tree
559	treep = true;
560	break;
561	case 'w': // suppress all warnings, hidden
562	Wsuppress = true;
563	break;
564	case 'W': // coordinate gcc -W with CFA, hidden
565	if ( strcmp( optarg, "all" ) == 0 ) {
566	SemanticWarning_EnableAll();
567	} else if ( strcmp( optarg, "error" ) == 0 ) {
568	Werror = true;
569	} else {
570	char * warning = optarg;
571	Severity s;
572	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
573	warning += 3;
574	s = Severity::Suppress;
575	} else {
576	s = Severity::Warn;
577	} // if
578	SemanticWarning_Set( warning, s );
579	} // if
580	break;
581	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
582	break;
583	case 'F': // source file-name without suffix, hidden
584	filename = optarg;
585	break;
586	case '?': // unknown option
587	if ( optopt ) { // short option ?
588	cout << "Unknown option -" << (char)optopt << endl;
589	} else {
590	cout << "Unknown option " << argv[optind - 1] << endl;
591	} // if
592	goto Default;
593	case ':': // missing option
594	if ( optopt ) { // short option ?
595	cout << "Missing option for -" << (char)optopt << endl;
596	} else {
597	cout << "Missing option for " << argv[optind - 1] << endl;
598	} // if
599	goto Default;
600	Default:
601	default:
602	usage( argv ); // no return
603	} // switch
604	} // while
605
606	if ( Werror ) {
607	SemanticWarning_WarningAsError();
608	} // if
609	if ( Wsuppress ) {
610	SemanticWarning_SuppressAll();
611	} // if
612	// for ( const auto w : WarningFormats ) {
613	// cout << w.name << ' ' << (int)w.severity << endl;
614	// } // for
615	} // parse_cmdline
616
617	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
618	extern int yyparse( void );
619	extern FILE * yyin;
620	extern int yylineno;
621
622	::linkage = linkage; // set globals
623	yyin = input;
624	yylineno = 1;
625	int parseStatus = yyparse();
626
627	fclose( input );
628	if ( shouldExit \|\| parseStatus != 0 ) {
629	exit( parseStatus );
630	} // if
631	} // parse
632
633	static bool notPrelude( Declaration * decl ) {
634	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
635	} // notPrelude
636
637	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
638	list< Declaration * > decls;
639
640	if ( genproto ) {
641	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
642	} else {
643	decls = translationUnit;
644	} // if
645
646	// depending on commandline options, either generate code or dump the AST
647	if ( codegenp ) {
648	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
649	} else {
650	printAll( decls, out );
651	} // if
652	deleteAll( translationUnit );
653	} // dump
654
655	// Local Variables: //
656	// tab-width: 4 //
657	// mode: c++ //
658	// compile-command: "make install" //
659	// End: //

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