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source: src/main.cc @ d52a55b

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumwith_gc

Last change on this file since d52a55b was 68e9ace, checked in by Thierry Delisle <tdelisle@…>, 7 years ago
Fixed semantic warning severity handling
Property mode set to `100644`
File size: 19.4 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 : Richard C. Bilson
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Wed May 2 14:59:02 2018
13	// Update Count : 490
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 <iterator> // for back_inserter
27	#include <list> // for list
28	#include <string> // for char_traits, operator<<
29
30	#include "../config.h" // for CFA_LIBDIR
31	#include "CodeGen/FixMain.h" // for FixMain
32	#include "CodeGen/FixNames.h" // for fixNames
33	#include "CodeGen/Generate.h" // for generate
34	#include "CodeTools/DeclStats.h" // for printDeclStats
35	#include "CodeTools/TrackLoc.h" // for fillLocations
36	#include "Common/PassVisitor.h"
37	#include "Common/CompilerError.h" // for CompilerError
38	#include "Common/SemanticError.h" // for SemanticError
39	#include "Common/UnimplementedError.h" // for UnimplementedError
40	#include "Common/utility.h" // for deleteAll, filter, printAll
41	#include "Concurrency/Waitfor.h" // for generateWaitfor
42	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
43	#include "ControlStruct/Mutate.h" // for mutate
44	#include "GenPoly/Box.h" // for box
45	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
46	#include "GenPoly/Lvalue.h" // for convertLvalue
47	#include "GenPoly/Specialize.h" // for convertSpecializations
48	#include "InitTweak/FixInit.h" // for fix
49	#include "InitTweak/GenInit.h" // for genInit
50	#include "MakeLibCfa.h" // for makeLibCfa
51	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
52	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
53	#include "Parser/TypedefTable.h" // for TypedefTable
54	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
55	#include "ResolvExpr/Resolver.h" // for resolve
56	#include "SymTab/Validate.h" // for validate
57	#include "SynTree/Declaration.h" // for Declaration
58	#include "SynTree/Visitor.h" // for acceptAll
59	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
60	#include "Virtual/ExpandCasts.h" // for expandCasts
61
62	using namespace std;
63
64	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
65
66
67	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
68	TypedefTable typedefTable;
69	DeclarationNode * parseTree = nullptr; // program parse tree
70
71	extern int yydebug; // set for -g flag (Grammar)
72	bool
73	astp = false,
74	bresolvep = false,
75	bboxp = false,
76	bcodegenp = false,
77	ctorinitp = false,
78	declstatsp = false,
79	exprp = false,
80	expraltp = false,
81	genericsp = false,
82	libcfap = false,
83	nopreludep = false,
84	noprotop = false,
85	nomainp = false,
86	parsep = false,
87	resolvep = false, // used in AlternativeFinder
88	symtabp = false,
89	treep = false,
90	tuplep = false,
91	validp = false,
92	errorp = false,
93	codegenp = false,
94	prettycodegenp = false,
95	linemarks = false;
96
97	static void parse_cmdline( int argc, char argv[], const char & filename );
98	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
99	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
100
101	static void backtrace( int start ) { // skip first N stack frames
102	enum { Frames = 50 };
103	void * array[Frames];
104	int size = ::backtrace( array, Frames );
105	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
106
107	*index( messages[0], '(' ) = '\0'; // find executable name
108	cerr << "Stack back trace for: " << messages[0] << endl;
109
110	// skip last 2 stack frames after main
111	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
112	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
113	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
114	if ( *p == '(' ) {
115	mangled_name = p;
116	} else if ( *p == '+' ) {
117	offset_begin = p;
118	} else if ( *p == ')' ) {
119	offset_end = p;
120	break;
121	} // if
122	} // for
123
124	// if line contains symbol, attempt to demangle
125	int frameNo = i - start;
126	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
127	*mangled_name++ = '\0'; // delimit strings
128	*offset_begin++ = '\0';
129	*offset_end++ = '\0';
130
131	int status;
132	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
133	// bug in __cxa_demangle for single-character lower-case non-mangled names
134	if ( status == 0 ) { // demangling successful ?
135	cerr << "(" << frameNo << ") " << messages[i] << " : "
136	<< real_name << "+" << offset_begin << offset_end << endl;
137	} else { // otherwise, output mangled name
138	cerr << "(" << frameNo << ") " << messages[i] << " : "
139	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
140	} // if
141
142	free( real_name );
143	} else { // otherwise, print the whole line
144	cerr << "(" << frameNo << ") " << messages[i] << endl;
145	} // if
146	} // for
147
148	free( messages );
149	} // backtrace
150
151	void sigSegvBusHandler( int sig_num ) {
152	cerr << "CFA runtime error program cfa-cpp terminated with "
153	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
154	<< "." << endl;
155	backtrace( 2 ); // skip first 2 stack frames
156	exit( EXIT_FAILURE );
157	} // sigSegvBusHandler
158
159	void sigAbortHandler( __attribute__((unused)) int sig_num ) {
160	backtrace( 6 ); // skip first 6 stack frames
161	signal( SIGABRT, SIG_DFL); // reset default signal handler
162	raise( SIGABRT ); // reraise SIGABRT
163	} // sigAbortHandler
164
165
166	int main( int argc, char * argv[] ) {
167	FILE * input; // use FILE rather than istream because yyin is FILE
168	ostream *output = & cout;
169	const char *filename = nullptr;
170	list< Declaration * > translationUnit;
171
172	signal( SIGSEGV, sigSegvBusHandler );
173	signal( SIGBUS, sigSegvBusHandler );
174	signal( SIGABRT, sigAbortHandler );
175
176	// std::cout << "main" << std::endl;
177	// for ( int i = 0; i < argc; i += 1 ) {
178	// std::cout << '\t' << argv[i] << std::endl;
179	// } // for
180
181	parse_cmdline( argc, argv, filename ); // process command-line arguments
182	CodeGen::FixMain::setReplaceMain( !nomainp );
183
184	try {
185	// choose to read the program from a file or stdin
186	if ( optind < argc ) { // any commands after the flags ? => input file name
187	input = fopen( argv[ optind ], "r" );
188	assertf( input, "cannot open %s\n", argv[ optind ] );
189	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
190	if ( filename == nullptr ) filename = argv[ optind ];
191	// prelude filename comes in differently
192	if ( libcfap ) filename = "prelude.cf";
193	optind += 1;
194	} else { // no input file name
195	input = stdin;
196	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
197	// a fake name along
198	if ( filename == nullptr ) filename = "stdin";
199	} // if
200
201	// read in the builtins, extras, and the prelude
202	if ( ! nopreludep ) { // include gcc builtins
203	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
204
205	// Read to gcc builtins, if not generating the cfa library
206	FILE * gcc_builtins = fopen( libcfap \| treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
207	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
208	parse( gcc_builtins, LinkageSpec::Compiler );
209
210	// read the extra prelude in, if not generating the cfa library
211	FILE * extras = fopen( libcfap \| treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
212	assertf( extras, "cannot open extras.cf\n" );
213	parse( extras, LinkageSpec::BuiltinC );
214
215	if ( ! libcfap ) {
216	// read the prelude in, if not generating the cfa library
217	FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
218	assertf( prelude, "cannot open prelude.cf\n" );
219	parse( prelude, LinkageSpec::Intrinsic );
220
221	// Read to cfa builtins, if not generating the cfa library
222	FILE * builtins = fopen( libcfap \| treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
223	assertf( builtins, "cannot open builtins.cf\n" );
224	parse( builtins, LinkageSpec::BuiltinCFA );
225	} // if
226	} // if
227
228	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
229
230	if ( parsep ) {
231	parseTree->printList( cout );
232	delete parseTree;
233	return 0;
234	} // if
235
236	buildList( parseTree, translationUnit );
237	delete parseTree;
238	parseTree = nullptr;
239
240	if ( astp ) {
241	dump( translationUnit );
242	return 0;
243	} // if
244
245	// add the assignment statement after the initialization of a type parameter
246	OPTPRINT( "validate" )
247	SymTab::validate( translationUnit, symtabp );
248	if ( symtabp ) {
249	deleteAll( translationUnit );
250	return 0;
251	} // if
252
253	if ( expraltp ) {
254	PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
255	acceptAll( translationUnit, printer );
256	return 0;
257	} // if
258
259	if ( validp ) {
260	dump( translationUnit );
261	return 0;
262	} // if
263
264	OPTPRINT( "mutate" )
265	ControlStruct::mutate( translationUnit );
266	OPTPRINT( "fixNames" )
267	CodeGen::fixNames( translationUnit );
268	OPTPRINT( "genInit" )
269	InitTweak::genInit( translationUnit );
270	OPTPRINT( "expandMemberTuples" );
271	Tuples::expandMemberTuples( translationUnit );
272	if ( libcfap ) {
273	// generate the bodies of cfa library functions
274	LibCfa::makeLibCfa( translationUnit );
275	} // if
276
277	if ( declstatsp ) {
278	CodeTools::printDeclStats( translationUnit );
279	deleteAll( translationUnit );
280	return 0;
281	}
282
283	if ( bresolvep ) {
284	dump( translationUnit );
285	return 0;
286	} // if
287
288	CodeTools::fillLocations( translationUnit );
289
290	OPTPRINT( "resolve" )
291	ResolvExpr::resolve( translationUnit );
292	if ( exprp ) {
293	dump( translationUnit );
294	return 0;
295	} // if
296
297	// fix ObjectDecl - replaces ConstructorInit nodes
298	OPTPRINT( "fixInit" )
299	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
300	if ( ctorinitp ) {
301	dump ( translationUnit );
302	return 0;
303	} // if
304
305	OPTPRINT( "expandUniqueExpr" ); // xxx - is this the right place for this? want to expand ASAP so that subsequent 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
306	Tuples::expandUniqueExpr( translationUnit );
307
308	OPTPRINT( "translateEHM" );
309	ControlStruct::translateEHM( translationUnit );
310
311	OPTPRINT( "generateWaitfor" );
312	Concurrency::generateWaitFor( translationUnit );
313
314	OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
315	GenPoly::convertSpecializations( translationUnit );
316
317	OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
318	Tuples::expandTuples( translationUnit );
319	if ( tuplep ) {
320	dump( translationUnit );
321	return 0;
322	}
323
324	OPTPRINT( "virtual expandCasts" ) // Must come after translateEHM
325	Virtual::expandCasts( translationUnit );
326
327	OPTPRINT("instantiateGenerics")
328	GenPoly::instantiateGeneric( translationUnit );
329	if ( genericsp ) {
330	dump( translationUnit );
331	return 0;
332	}
333	OPTPRINT( "convertLvalue" )
334	GenPoly::convertLvalue( translationUnit );
335
336
337	if ( bboxp ) {
338	dump( translationUnit );
339	return 0;
340	} // if
341	OPTPRINT( "box" )
342	GenPoly::box( translationUnit );
343
344	if ( bcodegenp ) {
345	dump( translationUnit );
346	return 0;
347	}
348
349	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
350	output = new ofstream( argv[ optind ] );
351	} // if
352
353	CodeTools::fillLocations( translationUnit );
354	OPTPRINT( "codegen" )
355	CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, linemarks );
356
357	CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
358	OPTPRINT( "end" )
359
360	if ( output != &cout ) {
361	delete output;
362	} // if
363	} catch ( SemanticErrorException &e ) {
364	if ( errorp ) {
365	cerr << "---AST at error:---" << endl;
366	dump( translationUnit, cerr );
367	cerr << endl << "---End of AST, begin error message:---\n" << endl;
368	} // if
369	e.print();
370	if ( output != &cout ) {
371	delete output;
372	} // if
373	return 1;
374	} catch ( UnimplementedError &e ) {
375	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
376	if ( output != &cout ) {
377	delete output;
378	} // if
379	return 1;
380	} catch ( CompilerError &e ) {
381	cerr << "Compiler Error: " << e.get_what() << endl;
382	cerr << "(please report bugs to [REDACTED])" << endl;
383	if ( output != &cout ) {
384	delete output;
385	} // if
386	return 1;
387	} // try
388
389	deleteAll( translationUnit );
390	return 0;
391	} // main
392
393	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
394	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Linemarks, Nolinemarks, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
395
396	static struct option long_opts[] = {
397	{ "ast", no_argument, 0, Ast },
398	{ "before-box", no_argument, 0, Bbox },
399	{ "before-resolver", no_argument, 0, Bresolver },
400	{ "ctorinitfix", no_argument, 0, CtorInitFix },
401	{ "decl-stats", no_argument, 0, DeclStats },
402	{ "expr", no_argument, 0, Expr },
403	{ "expralt", no_argument, 0, ExprAlt },
404	{ "grammar", no_argument, 0, Grammar },
405	{ "libcfa", no_argument, 0, LibCFA },
406	{ "line-marks", no_argument, 0, Linemarks },
407	{ "no-line-marks", no_argument, 0, Nolinemarks },
408	{ "no-preamble", no_argument, 0, Nopreamble },
409	{ "parse", no_argument, 0, Parse },
410	{ "no-prototypes", no_argument, 0, Prototypes },
411	{ "resolver", no_argument, 0, Resolver },
412	{ "symbol", no_argument, 0, Symbol },
413	{ "tree", no_argument, 0, Tree },
414	{ "tuple-expansion", no_argument, 0, TupleExpansion },
415	{ "validate", no_argument, 0, Validate },
416	{ 0, 0, 0, 0 }
417	}; // long_opts
418	int long_index;
419
420	opterr = 0; // (global) prevent getopt from printing error messages
421
422	bool Werror = false;
423	int c;
424	while ( (c = getopt_long( argc, argv, "abBcCdefgGlLmnNpqrstTvwW:yzZD:F:", long_opts, &long_index )) != -1 ) {
425	switch ( c ) {
426	case Ast:
427	case 'a': // dump AST
428	astp = true;
429	break;
430	case Bresolver:
431	case 'b': // print before resolver steps
432	bresolvep = true;
433	break;
434	case 'B': // print before box steps
435	bboxp = true;
436	break;
437	case CtorInitFix:
438	case 'c': // print after constructors and destructors are replaced
439	ctorinitp = true;
440	break;
441	case 'C': // print before code generation
442	bcodegenp = true;
443	break;
444	case DeclStats:
445	case 'd':
446	declstatsp = true;
447	break;
448	case Expr:
449	case 'e': // dump AST after expression analysis
450	exprp = true;
451	break;
452	case ExprAlt:
453	case 'f': // print alternatives for expressions
454	expraltp = true;
455	break;
456	case Grammar:
457	case 'g': // bison debugging info (grammar rules)
458	yydebug = true;
459	break;
460	case 'G': // dump AST after instantiate generics
461	genericsp = true;
462	break;
463	case LibCFA:
464	case 'l': // generate libcfa.c
465	libcfap = true;
466	break;
467	case Linemarks:
468	case 'L': // print lines marks
469	linemarks = true;
470	break;
471	case Nopreamble:
472	case 'n': // do not read preamble
473	nopreludep = true;
474	break;
475	case Nolinemarks:
476	case 'N': // suppress line marks
477	linemarks = false;
478	break;
479	case Prototypes:
480	case 'p': // generate prototypes for preamble functions
481	noprotop = true;
482	break;
483	case 'm': // don't replace the main
484	nomainp = true;
485	break;
486	case Parse:
487	case 'q': // dump parse tree
488	parsep = true;
489	break;
490	case Resolver:
491	case 'r': // print resolver steps
492	resolvep = true;
493	break;
494	case Symbol:
495	case 's': // print symbol table events
496	symtabp = true;
497	break;
498	case Tree:
499	case 't': // build in tree
500	treep = true;
501	break;
502	case TupleExpansion:
503	case 'T': // print after tuple expansion
504	tuplep = true;
505	break;
506	case 'v': // dump AST after decl validation pass
507	validp = true;
508	break;
509	case 'w':
510	SemanticWarning_SuppressAll();
511	break;
512	case 'W':
513	if ( strcmp( optarg, "all" ) == 0 ) {
514	SemanticWarning_EnableAll();
515	} else if ( strcmp( optarg, "error" ) == 0 ) {
516	Werror = true;
517	} else {
518	char * warning = optarg;
519	Severity s;
520	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
521	warning += 3;
522	s = Severity::Suppress;
523	} else {
524	s = Severity::Warn;
525	} // if
526	SemanticWarning_Set( warning, s );
527	} // if
528	break;
529	case 'y': // dump AST on error
530	errorp = true;
531	break;
532	case 'z': // dump as codegen rather than AST
533	codegenp = true;
534	break;
535	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
536	prettycodegenp = true;
537	break;
538	case 'D': // ignore -Dxxx
539	break;
540	case 'F': // source file-name without suffix
541	filename = optarg;
542	break;
543	case '?':
544	if ( optopt ) { // short option ?
545	assertf( false, "Unknown option: -%c\n", (char)optopt );
546	} else {
547	assertf( false, "Unknown option: %s\n", argv[optind - 1] );
548	} // if
549	#if __GNUC__ < 7
550	#else
551	__attribute__((fallthrough));
552	#endif
553	default:
554	abort();
555	} // switch
556	} // while
557
558	if ( Werror ) {
559	SemanticWarning_WarningAsError();
560	} // if
561	// for ( const auto w : WarningFormats ) {
562	// cout << w.name << ' ' << (int)w.severity << endl;
563	// } // for
564	} // parse_cmdline
565
566	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
567	extern int yyparse( void );
568	extern FILE * yyin;
569	extern int yylineno;
570
571	::linkage = linkage; // set globals
572	yyin = input;
573	yylineno = 1;
574	typedefTable.enterScope();
575	int parseStatus = yyparse();
576
577	fclose( input );
578	if ( shouldExit \|\| parseStatus != 0 ) {
579	exit( parseStatus );
580	} // if
581	} // parse
582
583	static bool notPrelude( Declaration * decl ) {
584	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
585	} // notPrelude
586
587	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
588	list< Declaration * > decls;
589
590	if ( noprotop ) {
591	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
592	} else {
593	decls = translationUnit;
594	} // if
595
596	// depending on commandline options, either generate code or dump the AST
597	if ( codegenp ) {
598	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
599	} else {
600	printAll( decls, out );
601	}
602	deleteAll( translationUnit );
603	} // dump
604
605	// Local Variables: //
606	// tab-width: 4 //
607	// mode: c++ //
608	// compile-command: "make install" //
609	// End: //

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