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source: src/main.cc @ da7454c

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

Last change on this file since da7454c was 0e464f6, checked in by Thierry Delisle <tdelisle@…>, 5 years ago
cfa-cpp help message now puts all dump commands together and in order.
Property mode set to `100644`
File size: 23.1 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 : 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 "CompilationState.h"
32	#include "../config.h" // for CFA_LIBDIR
33	#include "CodeGen/FixMain.h" // for FixMain
34	#include "CodeGen/FixNames.h" // for fixNames
35	#include "CodeGen/Generate.h" // for generate
36	#include "CodeTools/DeclStats.h" // for printDeclStats
37	#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
38	#include "CodeTools/TrackLoc.h" // for fillLocations
39	#include "Common/CompilerError.h" // for CompilerError
40	#include "Common/Stats.h"
41	#include "Common/PassVisitor.h"
42	#include "Common/SemanticError.h" // for SemanticError
43	#include "Common/UnimplementedError.h" // for UnimplementedError
44	#include "Common/utility.h" // for deleteAll, filter, printAll
45	#include "Concurrency/Waitfor.h" // for generateWaitfor
46	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
47	#include "ControlStruct/Mutate.h" // for mutate
48	#include "GenPoly/Box.h" // for box
49	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
50	#include "GenPoly/Lvalue.h" // for convertLvalue
51	#include "GenPoly/Specialize.h" // for convertSpecializations
52	#include "InitTweak/FixInit.h" // for fix
53	#include "InitTweak/GenInit.h" // for genInit
54	#include "MakeLibCfa.h" // for makeLibCfa
55	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
56	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
57	#include "Parser/TypedefTable.h" // for TypedefTable
58	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
59	#include "ResolvExpr/Resolver.h" // for resolve
60	#include "SymTab/Validate.h" // for validate
61	#include "SynTree/Declaration.h" // for Declaration
62	#include "SynTree/Visitor.h" // for acceptAll
63	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
64	#include "Virtual/ExpandCasts.h" // for expandCasts
65
66	using namespace std;
67
68	static void NewPass( const char * const name ) {
69	Stats::Heap::newPass( name );
70	using namespace Stats::Counters;
71	{
72	static auto group = build<CounterGroup>( "Pass Visitor" );
73	auto pass = build<CounterGroup>( name, group );
74	pass_visitor_stats.depth = 0;
75	pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
76	pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
77	}
78	{
79	static auto group = build<CounterGroup>( "Syntax Node" );
80	auto pass = build<CounterGroup>( name, group );
81	BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
82	}
83	}
84
85	#define PASS( name, pass ) \
86	if ( errorp ) { cerr << name << endl; } \
87	NewPass(name); \
88	Stats::Time::StartBlock(name); \
89	pass; \
90	Stats::Time::StopBlock();
91
92	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
93	TypedefTable typedefTable;
94	DeclarationNode * parseTree = nullptr; // program parse tree
95
96	static std::string PreludeDirector = "";
97
98	static void parse_cmdline( int argc, char argv[], const char & filename );
99	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
100	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
101
102	static void backtrace( int start ) { // skip first N stack frames
103	enum { Frames = 50 };
104	void * array[Frames];
105	int size = ::backtrace( array, Frames );
106	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
107
108	*index( messages[0], '(' ) = '\0'; // find executable name
109	cerr << "Stack back trace for: " << messages[0] << endl;
110
111	// skip last 2 stack frames after main
112	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
113	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
114	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
115	if ( *p == '(' ) {
116	mangled_name = p;
117	} else if ( *p == '+' ) {
118	offset_begin = p;
119	} else if ( *p == ')' ) {
120	offset_end = p;
121	break;
122	} // if
123	} // for
124
125	// if line contains symbol, attempt to demangle
126	int frameNo = i - start;
127	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
128	*mangled_name++ = '\0'; // delimit strings
129	*offset_begin++ = '\0';
130	*offset_end++ = '\0';
131
132	int status;
133	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
134	// bug in __cxa_demangle for single-character lower-case non-mangled names
135	if ( status == 0 ) { // demangling successful ?
136	cerr << "(" << frameNo << ") " << messages[i] << " : "
137	<< real_name << "+" << offset_begin << offset_end << endl;
138	} else { // otherwise, output mangled name
139	cerr << "(" << frameNo << ") " << messages[i] << " : "
140	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
141	} // if
142
143	free( real_name );
144	} else { // otherwise, print the whole line
145	cerr << "(" << frameNo << ") " << messages[i] << endl;
146	} // if
147	} // for
148
149	free( messages );
150	} // backtrace
151
152	static void sigSegvBusHandler( int sig_num ) {
153	cerr << "CFA runtime error program cfa-cpp terminated with "
154	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
155	<< "." << endl;
156	backtrace( 2 ); // skip first 2 stack frames
157	//_exit( EXIT_FAILURE );
158	abort(); // cause core dump for debugging
159	} // sigSegvBusHandler
160
161	static void sigAbortHandler( __attribute__((unused)) int sig_num ) {
162	backtrace( 6 ); // skip first 6 stack frames
163	signal( SIGABRT, SIG_DFL); // reset default signal handler
164	raise( SIGABRT ); // reraise SIGABRT
165	} // sigAbortHandler
166
167
168	int main( int argc, char * argv[] ) {
169	FILE * input; // use FILE rather than istream because yyin is FILE
170	ostream * output = & cout;
171	const char * filename = nullptr;
172	list< Declaration * > translationUnit;
173
174	signal( SIGSEGV, sigSegvBusHandler );
175	signal( SIGBUS, sigSegvBusHandler );
176	signal( SIGABRT, sigAbortHandler );
177
178	// std::cout << "main" << std::endl;
179	// for ( int i = 0; i < argc; i += 1 ) {
180	// std::cout << '\t' << argv[i] << std::endl;
181	// } // for
182
183	parse_cmdline( argc, argv, filename ); // process command-line arguments
184	CodeGen::FixMain::setReplaceMain( !nomainp );
185
186	try {
187	// choose to read the program from a file or stdin
188	if ( optind < argc ) { // any commands after the flags ? => input file name
189	input = fopen( argv[ optind ], "r" );
190	assertf( input, "cannot open %s\n", argv[ optind ] );
191	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
192	if ( filename == nullptr ) filename = argv[ optind ];
193	// prelude filename comes in differently
194	if ( libcfap ) filename = "prelude.cfa";
195	optind += 1;
196	} else { // no input file name
197	input = stdin;
198	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
199	// a fake name along
200	if ( filename == nullptr ) filename = "stdin";
201	} // if
202
203	Stats::Time::StartGlobal();
204	NewPass("Parse");
205	Stats::Time::StartBlock("Parse");
206
207	// read in the builtins, extras, and the prelude
208	if ( ! nopreludep ) { // include gcc builtins
209	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
210
211	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
212
213	// Read to gcc builtins, if not generating the cfa library
214	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
215	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
216	parse( gcc_builtins, LinkageSpec::Compiler );
217
218	// read the extra prelude in, if not generating the cfa library
219	FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
220	assertf( extras, "cannot open extras.cf\n" );
221	parse( extras, LinkageSpec::BuiltinC );
222
223	if ( ! libcfap ) {
224	// read the prelude in, if not generating the cfa library
225	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
226	assertf( prelude, "cannot open prelude.cfa\n" );
227	parse( prelude, LinkageSpec::Intrinsic );
228
229	// Read to cfa builtins, if not generating the cfa library
230	FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
231	assertf( builtins, "cannot open builtins.cf\n" );
232	parse( builtins, LinkageSpec::BuiltinCFA );
233	} // if
234	} // if
235
236	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
237
238	if ( parsep ) {
239	parseTree->printList( cout );
240	delete parseTree;
241	return EXIT_SUCCESS;
242	} // if
243
244	buildList( parseTree, translationUnit );
245	delete parseTree;
246	parseTree = nullptr;
247
248	if ( astp ) {
249	dump( translationUnit );
250	return EXIT_SUCCESS;
251	} // if
252
253	// Temporary: fill locations after parsing so that every node has a location, for early error messages.
254	// Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
255	// works okay for now.
256	CodeTools::fillLocations( translationUnit );
257	Stats::Time::StopBlock();
258
259	// add the assignment statement after the initialization of a type parameter
260	PASS( "Validate", SymTab::validate( translationUnit, symtabp ) );
261	if ( symtabp ) {
262	deleteAll( translationUnit );
263	return EXIT_SUCCESS;
264	} // if
265
266	if ( expraltp ) {
267	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
268	acceptAll( translationUnit, printer );
269	return EXIT_SUCCESS;
270	} // if
271
272	if ( validp ) {
273	dump( translationUnit );
274	return EXIT_SUCCESS;
275	} // if
276
277	PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
278	PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
279	PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
280	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
281	if ( libcfap ) {
282	// generate the bodies of cfa library functions
283	LibCfa::makeLibCfa( translationUnit );
284	} // if
285
286	if ( declstatsp ) {
287	CodeTools::printDeclStats( translationUnit );
288	deleteAll( translationUnit );
289	return EXIT_SUCCESS;
290	} // if
291
292	if ( bresolvep ) {
293	dump( translationUnit );
294	return EXIT_SUCCESS;
295	} // if
296
297	CodeTools::fillLocations( translationUnit );
298
299	if ( resolvprotop ) {
300	CodeTools::dumpAsResolvProto( translationUnit );
301	return EXIT_SUCCESS;
302	} // if
303
304	PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
305	if ( exprp ) {
306	dump( translationUnit );
307	return EXIT_SUCCESS;
308	} // if
309
310	// fix ObjectDecl - replaces ConstructorInit nodes
311	PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
312	if ( ctorinitp ) {
313	dump ( translationUnit );
314	return EXIT_SUCCESS;
315	} // if
316
317	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
318
319	PASS( "Translate EHM" , ControlStruct::translateEHM( translationUnit ) );
320
321	PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
322
323	PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
324
325	PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
326
327	if ( tuplep ) {
328	dump( translationUnit );
329	return EXIT_SUCCESS;
330	} // if
331
332	PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
333
334	PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
335	if ( genericsp ) {
336	dump( translationUnit );
337	return EXIT_SUCCESS;
338	} // if
339	PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
340
341
342	if ( bboxp ) {
343	dump( translationUnit );
344	return EXIT_SUCCESS;
345	} // if
346	PASS( "Box", GenPoly::box( translationUnit ) );
347
348	if ( bcodegenp ) {
349	dump( translationUnit );
350	return EXIT_SUCCESS;
351	} // if
352
353	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
354	output = new ofstream( argv[ optind ] );
355	} // if
356
357	CodeTools::fillLocations( translationUnit );
358	PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
359
360	CodeGen::FixMain::fix( *output, (PreludeDirector + "/bootloader.c").c_str() );
361	if ( output != &cout ) {
362	delete output;
363	} // if
364	} catch ( SemanticErrorException &e ) {
365	if ( errorp ) {
366	cerr << "---AST at error:---" << endl;
367	dump( translationUnit, cerr );
368	cerr << endl << "---End of AST, begin error message:---\n" << endl;
369	} // if
370	e.print();
371	if ( output != &cout ) {
372	delete output;
373	} // if
374	return EXIT_FAILURE;
375	} catch ( UnimplementedError &e ) {
376	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
377	if ( output != &cout ) {
378	delete output;
379	} // if
380	return EXIT_FAILURE;
381	} catch ( CompilerError &e ) {
382	cerr << "Compiler Error: " << e.get_what() << endl;
383	cerr << "(please report bugs to [REDACTED])" << endl;
384	if ( output != &cout ) {
385	delete output;
386	} // if
387	return EXIT_FAILURE;
388	} catch ( ... ) {
389	std::exception_ptr eptr = std::current_exception();
390	try {
391	if (eptr) {
392	std::rethrow_exception(eptr);
393	} else {
394	std::cerr << "Exception Uncaught and Unknown" << std::endl;
395	} // if
396	} catch(const std::exception& e) {
397	std::cerr << "Uncaught Exception \"" << e.what() << "\"\n";
398	} // try
399	return EXIT_FAILURE;
400	} // try
401
402	deleteAll( translationUnit );
403	Stats::print();
404	return EXIT_SUCCESS;
405	} // main
406
407
408	static const char optstring[] = ":hlLmNnpP:S:twW:D:F:";
409
410	enum { PreludeDir = 128 };
411	static struct option long_opts[] = {
412	{ "help", no_argument, nullptr, 'h' },
413	{ "libcfa", no_argument, nullptr, 'l' },
414	{ "linemarks", no_argument, nullptr, 'L' },
415	{ "no-main", no_argument, 0, 'm' },
416	{ "no-linemarks", no_argument, nullptr, 'N' },
417	{ "no-prelude", no_argument, nullptr, 'n' },
418	{ "prototypes", no_argument, nullptr, 'p' },
419	{ "print", required_argument, nullptr, 'P' },
420	{ "prelude-dir", required_argument, nullptr, PreludeDir },
421	{ "statistics", required_argument, nullptr, 'S' },
422	{ "tree", no_argument, nullptr, 't' },
423	{ "", no_argument, nullptr, 0 }, // -w
424	{ "", no_argument, nullptr, 0 }, // -W
425	{ "", no_argument, nullptr, 0 }, // -D
426	{ "", no_argument, nullptr, 0 }, // -F
427	{ nullptr, 0, nullptr, 0 }
428	}; // long_opts
429
430	static const char * description[] = {
431	"print help message", // -h
432	"generate libcfa.c", // -l
433	"generate line marks", // -L
434	"do not replace main", // -m
435	"do not generate line marks", // -N
436	"do not read prelude", // -n
437	"generate prototypes for prelude functions", // -p
438	"print", // -P
439	"<directory> prelude directory for debug/nodebug", // no flag
440	"<option-list> enable profiling information:\n counters,heap,time,all,none", // -S
441	"build in tree", // -t
442	"", // -w
443	"", // -W
444	"", // -D
445	"", // -F
446	}; // description
447
448	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
449
450	static struct Printopts {
451	const char * name;
452	int & flag;
453	int val;
454	const char * descript;
455	} printopts[] = {
456	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
457	{ "asterr", errorp, true, "print AST on error" },
458	{ "declstats", declstatsp, true, "code property statistics" },
459	{ "parse", yydebug, true, "yacc (parsing) debug information" },
460	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
461	{ "rproto", resolvprotop, true, "resolver-proto instance" },
462	{ "rsteps", resolvep, true, "print resolver steps" },
463	{ "tree", parsep, true, "print parse tree" },
464	// code dumps
465	{ "ast", astp, true, "print AST after parsing" },
466	{ "symevt", symtabp, true, "print AST after symbol table events" },
467	{ "altexpr", expraltp, true, "print alternatives for expressions" },
468	{ "astdecl", validp, true, "print AST after declaration validation pass" },
469	{ "resolver", bresolvep, true, "print AST before resolver step" },
470	{ "astexpr", exprp, true, "print AST after expression analysis" },
471	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
472	{ "tuple", tuplep, true, "print AST after tuple expansion" },
473	{ "astgen", genericsp, true, "print AST after instantiate generics" },
474	{ "box", bboxp, true, "print AST before box step" },
475	{ "codegen", bcodegenp, true, "print AST before code generation" },
476	};
477	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
478
479	static void usage( char *argv[] ) {
480	cout << "Usage: " << argv[0] << " options are:" << endl;
481	int i = 0, j = 1; // j skips starting colon
482	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
483	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
484	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
485	cout << " -" << optstring[j] << ",";
486	} else { // no flag
487	j -= 1; // compensate
488	cout << " ";
489	} // if
490	cout << " --" << left << setw(12) << long_opts[i].name << " ";
491	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
492	cout << "one of: " << endl;
493	for ( int i = 0; i < printoptsSize; i += 1 ) {
494	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
495	} // for
496	} else {
497	cout << description[i] << endl;
498	} // if
499	} // if
500	if ( optstring[j + 1] == ':' ) j += 1;
501	} // for
502	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
503	exit( EXIT_FAILURE );
504	} // usage
505
506	static void parse_cmdline( int argc, char * argv[], const char *& filename ) {
507	opterr = 0; // (global) prevent getopt from printing error messages
508
509	bool Wsuppress = false, Werror = false;
510	int c;
511	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
512	switch ( c ) {
513	case 'h': // help message
514	usage( argv ); // no return
515	break;
516	case 'l': // generate libcfa.c
517	libcfap = true;
518	break;
519	case 'L': // generate line marks
520	linemarks = true;
521	break;
522	case 'm': // do not replace main
523	nomainp = true;
524	break;
525	case 'N': // do not generate line marks
526	linemarks = false;
527	break;
528	case 'n': // do not read prelude
529	nopreludep = true;
530	break;
531	case 'p': // generate prototypes for prelude functions
532	genproto = true;
533	break;
534	case 'P': // print options
535	for ( int i = 0;; i += 1 ) {
536	if ( i == printoptsSize ) {
537	cout << "Unknown --print option " << optarg << endl;
538	goto Default;
539	} // if
540	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
541	printopts[i].flag = printopts[i].val;
542	break;
543	} // if
544	} // for
545	break;
546	case PreludeDir: // prelude directory for debug/nodebug, hidden
547	PreludeDirector = optarg;
548	break;
549	case 'S': // enable profiling information, argument comma separated list of names
550	Stats::parse_params( optarg );
551	break;
552	case 't': // build in tree
553	treep = true;
554	break;
555	case 'w': // suppress all warnings, hidden
556	Wsuppress = true;
557	break;
558	case 'W': // coordinate gcc -W with CFA, hidden
559	if ( strcmp( optarg, "all" ) == 0 ) {
560	SemanticWarning_EnableAll();
561	} else if ( strcmp( optarg, "error" ) == 0 ) {
562	Werror = true;
563	} else {
564	char * warning = optarg;
565	Severity s;
566	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
567	warning += 3;
568	s = Severity::Suppress;
569	} else {
570	s = Severity::Warn;
571	} // if
572	SemanticWarning_Set( warning, s );
573	} // if
574	break;
575	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
576	break;
577	case 'F': // source file-name without suffix, hidden
578	filename = optarg;
579	break;
580	case '?': // unknown option
581	if ( optopt ) { // short option ?
582	cout << "Unknown option -" << (char)optopt << endl;
583	} else {
584	cout << "Unknown option " << argv[optind - 1] << endl;
585	} // if
586	goto Default;
587	case ':': // missing option
588	if ( optopt ) { // short option ?
589	cout << "Missing option for -" << (char)optopt << endl;
590	} else {
591	cout << "Missing option for " << argv[optind - 1] << endl;
592	} // if
593	goto Default;
594	Default:
595	default:
596	usage( argv ); // no return
597	} // switch
598	} // while
599
600	if ( Werror ) {
601	SemanticWarning_WarningAsError();
602	} // if
603	if ( Wsuppress ) {
604	SemanticWarning_SuppressAll();
605	} // if
606	// for ( const auto w : WarningFormats ) {
607	// cout << w.name << ' ' << (int)w.severity << endl;
608	// } // for
609	} // parse_cmdline
610
611	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
612	extern int yyparse( void );
613	extern FILE * yyin;
614	extern int yylineno;
615
616	::linkage = linkage; // set globals
617	yyin = input;
618	yylineno = 1;
619	int parseStatus = yyparse();
620
621	fclose( input );
622	if ( shouldExit \|\| parseStatus != 0 ) {
623	exit( parseStatus );
624	} // if
625	} // parse
626
627	static bool notPrelude( Declaration * decl ) {
628	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
629	} // notPrelude
630
631	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
632	list< Declaration * > decls;
633
634	if ( genproto ) {
635	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
636	} else {
637	decls = translationUnit;
638	} // if
639
640	// depending on commandline options, either generate code or dump the AST
641	if ( codegenp ) {
642	CodeGen::generate( decls, out, ! genproto, prettycodegenp );
643	} else {
644	printAll( decls, out );
645	} // if
646	deleteAll( translationUnit );
647	} // dump
648
649	// Local Variables: //
650	// tab-width: 4 //
651	// mode: c++ //
652	// compile-command: "make install" //
653	// End: //

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