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source: src/main.cc @ 1a59641

new-env

Last change on this file since 1a59641 was 28f3a19, checked in by Aaron Moss <a3moss@…>, 6 years ago
Merge branch 'master' into with_gc
Property mode set to `100644`
File size: 19.9 KB

Line
1
2	//
3	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
4	//
5	// The contents of this file are covered under the licence agreement in the
6	// file "LICENCE" distributed with Cforall.
7	//
8	// main.cc --
9	//
10	// Author : Richard C. Bilson
11	// Created On : Fri May 15 23:12:02 2015
12	// Last Modified By : Peter A. Buhr
13	// Last Modified On : Wed Jun 6 15:51:47 2018
14	// Update Count : 498
15	//
16
17	#include <cxxabi.h> // for __cxa_demangle
18	#include <execinfo.h> // for backtrace, backtrace_symbols
19	#include <getopt.h> // for no_argument, optind, geto...
20	#include <signal.h> // for signal, SIGABRT, SIGSEGV
21	#include <cassert> // for assertf
22	#include <cstdio> // for fopen, FILE, fclose, stdin
23	#include <cstdlib> // for exit, free, abort, EXIT_F...
24	#include <cstring> // for index
25	#include <fstream> // for ofstream
26	#include <iostream> // for operator<<, basic_ostream
27	#include <iterator> // for back_inserter
28	#include <list> // for list
29	#include <string> // for char_traits, operator<<
30
31	#include "../config.h" // for CFA_LIBDIR
32	#include "CodeGen/FixMain.h" // for FixMain
33	#include "CodeGen/FixNames.h" // for fixNames
34	#include "CodeGen/Generate.h" // for generate
35	#include "CodeTools/DeclStats.h" // for printDeclStats
36	#include "CodeTools/TrackLoc.h" // for fillLocations
37	#include "Common/CompilerError.h" // for CompilerError
38	#include "Common/GC.h" // for GC
39	#include "Common/Heap.h"
40	#include "Common/PassVisitor.h"
41	#include "Common/SemanticError.h" // for SemanticError
42	#include "Common/UnimplementedError.h" // for UnimplementedError
43	#include "Common/utility.h" // for deleteAll, filter, printAll
44	#include "Concurrency/Waitfor.h" // for generateWaitfor
45	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
46	#include "ControlStruct/Mutate.h" // for mutate
47	#include "GenPoly/Box.h" // for box
48	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
49	#include "GenPoly/Lvalue.h" // for convertLvalue
50	#include "GenPoly/Specialize.h" // for convertSpecializations
51	#include "InitTweak/FixInit.h" // for fix
52	#include "InitTweak/GenInit.h" // for genInit
53	#include "MakeLibCfa.h" // for makeLibCfa
54	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
55	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
56	#include "Parser/TypedefTable.h" // for TypedefTable
57	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
58	#include "ResolvExpr/Resolver.h" // for resolve
59	#include "SymTab/Validate.h" // for validate
60	#include "SynTree/Declaration.h" // for Declaration
61	#include "SynTree/GcTracer.h" // for GC << TranslationUnit
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	#define PASS(name, pass) \
69	if ( errorp ) { cerr << name << endl; } \
70	HeapStats::newPass(name); \
71	pass;
72
73	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
74	TypedefTable typedefTable;
75	DeclarationNode * parseTree = nullptr; // program parse tree
76
77	extern int yydebug; // set for -g flag (Grammar)
78	bool
79	astp = false,
80	bresolvep = false,
81	bboxp = false,
82	bcodegenp = false,
83	ctorinitp = false,
84	declstatsp = false,
85	exprp = false,
86	expraltp = false,
87	genericsp = false,
88	libcfap = false,
89	nopreludep = false,
90	noprotop = false,
91	nomainp = false,
92	parsep = false,
93	resolvep = false, // used in AlternativeFinder
94	symtabp = false,
95	treep = false,
96	tuplep = false,
97	validp = false,
98	errorp = false,
99	codegenp = false,
100	prettycodegenp = false,
101	linemarks = false;
102
103	static void parse_cmdline( int argc, char argv[], const char & filename );
104	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
105	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
106
107	static void backtrace( int start ) { // skip first N stack frames
108	enum { Frames = 50 };
109	void * array[Frames];
110	int size = ::backtrace( array, Frames );
111	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
112
113	*index( messages[0], '(' ) = '\0'; // find executable name
114	cerr << "Stack back trace for: " << messages[0] << endl;
115
116	// skip last 2 stack frames after main
117	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
118	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
119	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
120	if ( *p == '(' ) {
121	mangled_name = p;
122	} else if ( *p == '+' ) {
123	offset_begin = p;
124	} else if ( *p == ')' ) {
125	offset_end = p;
126	break;
127	} // if
128	} // for
129
130	// if line contains symbol, attempt to demangle
131	int frameNo = i - start;
132	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
133	*mangled_name++ = '\0'; // delimit strings
134	*offset_begin++ = '\0';
135	*offset_end++ = '\0';
136
137	int status;
138	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
139	// bug in __cxa_demangle for single-character lower-case non-mangled names
140	if ( status == 0 ) { // demangling successful ?
141	cerr << "(" << frameNo << ") " << messages[i] << " : "
142	<< real_name << "+" << offset_begin << offset_end << endl;
143	} else { // otherwise, output mangled name
144	cerr << "(" << frameNo << ") " << messages[i] << " : "
145	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
146	} // if
147
148	free( real_name );
149	} else { // otherwise, print the whole line
150	cerr << "(" << frameNo << ") " << messages[i] << endl;
151	} // if
152	} // for
153
154	free( messages );
155	} // backtrace
156
157	void sigSegvBusHandler( int sig_num ) {
158	cerr << "CFA runtime error program cfa-cpp terminated with "
159	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
160	<< "." << endl;
161	backtrace( 2 ); // skip first 2 stack frames
162	//_exit( EXIT_FAILURE );
163	abort();
164	} // sigSegvBusHandler
165
166	void sigAbortHandler( __attribute__((unused)) int sig_num ) {
167	backtrace( 6 ); // skip first 6 stack frames
168	signal( SIGABRT, SIG_DFL); // reset default signal handler
169	raise( SIGABRT ); // reraise SIGABRT
170	} // sigAbortHandler
171
172
173	int main( int argc, char * argv[] ) {
174	FILE * input; // use FILE rather than istream because yyin is FILE
175	ostream *output = & cout;
176	const char *filename = nullptr;
177	list< Declaration * > translationUnit;
178
179	signal( SIGSEGV, sigSegvBusHandler );
180	signal( SIGBUS, sigSegvBusHandler );
181	signal( SIGABRT, sigAbortHandler );
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.cf";
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	// read in the builtins, extras, and the prelude
204	if ( ! nopreludep ) { // include gcc builtins
205	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
206
207	// Read to gcc builtins, if not generating the cfa library
208	FILE * gcc_builtins = fopen( libcfap \| treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
209	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
210	parse( gcc_builtins, LinkageSpec::Compiler );
211
212	// read the extra prelude in, if not generating the cfa library
213	FILE * extras = fopen( libcfap \| treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
214	assertf( extras, "cannot open extras.cf\n" );
215	parse( extras, LinkageSpec::BuiltinC );
216
217	if ( ! libcfap ) {
218	// read the prelude in, if not generating the cfa library
219	FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
220	assertf( prelude, "cannot open prelude.cf\n" );
221	parse( prelude, LinkageSpec::Intrinsic );
222
223	// Read to cfa builtins, if not generating the cfa library
224	FILE * builtins = fopen( libcfap \| treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
225	assertf( builtins, "cannot open builtins.cf\n" );
226	parse( builtins, LinkageSpec::BuiltinCFA );
227	} // if
228	} // if
229
230	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
231
232	if ( parsep ) {
233	parseTree->printList( cout );
234	delete parseTree;
235	return 0;
236	} // if
237
238	buildList( parseTree, translationUnit );
239	delete parseTree;
240	parseTree = nullptr;
241	collect( translationUnit );
242
243	if ( astp ) {
244	dump( translationUnit );
245	return 0;
246	} // if
247
248	// add the assignment statement after the initialization of a type parameter
249	PASS( "validate", SymTab::validate( translationUnit, symtabp ) );
250	if ( symtabp ) return 0;
251	collect( translationUnit );
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	PASS( "fixLabels", ControlStruct::fixLabels( translationUnit ) );
265	PASS( "fixNames", CodeGen::fixNames( translationUnit ) );
266	PASS( "genInit", InitTweak::genInit( translationUnit ) );
267	PASS( "expandMemberTuples" , Tuples::expandMemberTuples( translationUnit ) );
268	collect( translationUnit );
269	if ( libcfap ) {
270	// generate the bodies of cfa library functions
271	LibCfa::makeLibCfa( translationUnit );
272	} // if
273
274	if ( declstatsp ) {
275	CodeTools::printDeclStats( translationUnit );
276	return 0;
277	}
278
279	if ( bresolvep ) {
280	dump( translationUnit );
281	return 0;
282	} // if
283
284	CodeTools::fillLocations( translationUnit );
285
286	PASS( "resolve", ResolvExpr::resolve( translationUnit ) );
287	collect( translationUnit );
288	if ( exprp ) {
289	dump( translationUnit );
290	return 0;
291	} // if
292
293	// fix ObjectDecl - replaces ConstructorInit nodes
294	PASS( "fixInit", InitTweak::fix( translationUnit, filename, libcfap \|\| treep ) );
295	collect( translationUnit );
296	if ( ctorinitp ) {
297	dump ( translationUnit );
298	return 0;
299	} // if
300
301	PASS( "expandUniqueExpr", 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
302
303	PASS( "translateEHM" , ControlStruct::translateEHM( translationUnit ) );
304
305	PASS( "generateWaitfor" , Concurrency::generateWaitFor( translationUnit ) );
306
307	PASS( "convertSpecializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
308
309	PASS( "expandTuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
310	collect( translationUnit );
311	if ( tuplep ) {
312	dump( translationUnit );
313	return 0;
314	}
315
316	PASS( "virtual expandCasts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
317
318	PASS( "instantiateGenerics", GenPoly::instantiateGeneric( translationUnit ) );
319	collect( translationUnit );
320	if ( genericsp ) {
321	dump( translationUnit );
322	return 0;
323	}
324	PASS( "convertLvalue", GenPoly::convertLvalue( translationUnit ) );
325	collect( translationUnit );
326	if ( bboxp ) {
327	dump( translationUnit );
328	return 0;
329	} // if
330	PASS( "box", GenPoly::box( translationUnit ) );
331	collect( translationUnit );
332	if ( bcodegenp ) {
333	dump( translationUnit );
334	return 0;
335	}
336
337	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
338	output = new ofstream( argv[ optind ] );
339	} // if
340
341	CodeTools::fillLocations( translationUnit );
342	PASS( "codegen", CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, linemarks ) );
343
344	CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
345	if ( output != &cout ) {
346	delete output;
347	} // if
348	} catch ( SemanticErrorException &e ) {
349	if ( errorp ) {
350	cerr << "---AST at error:---" << endl;
351	dump( translationUnit, cerr );
352	cerr << endl << "---End of AST, begin error message:---\n" << endl;
353	} // if
354	e.print();
355	if ( output != &cout ) {
356	delete output;
357	} // if
358	return 1;
359	} catch ( UnimplementedError &e ) {
360	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
361	if ( output != &cout ) {
362	delete output;
363	} // if
364	return 1;
365	} catch ( CompilerError &e ) {
366	cerr << "Compiler Error: " << e.get_what() << endl;
367	cerr << "(please report bugs to [REDACTED])" << endl;
368	if ( output != &cout ) {
369	delete output;
370	} // if
371	return 1;
372	} catch(...) {
373	std::exception_ptr eptr = std::current_exception();
374	try {
375	if (eptr) {
376	std::rethrow_exception(eptr);
377	}
378	else {
379	std::cerr << "Exception Uncaught and Unkown" << std::endl;
380	}
381	} catch(const std::exception& e) {
382	std::cerr << "Unaught Exception \"" << e.what() << "\"\n";
383	}
384	return 1;
385	}// try
386
387	if(!libcfap && !treep) HeapStats::printStats();
388	return 0;
389	} // main
390
391	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
392	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Linemarks, Nolinemarks, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
393
394	static struct option long_opts[] = {
395	{ "ast", no_argument, 0, Ast },
396	{ "before-box", no_argument, 0, Bbox },
397	{ "before-resolver", no_argument, 0, Bresolver },
398	{ "ctorinitfix", no_argument, 0, CtorInitFix },
399	{ "decl-stats", no_argument, 0, DeclStats },
400	{ "expr", no_argument, 0, Expr },
401	{ "expralt", no_argument, 0, ExprAlt },
402	{ "grammar", no_argument, 0, Grammar },
403	{ "libcfa", no_argument, 0, LibCFA },
404	{ "line-marks", no_argument, 0, Linemarks },
405	{ "no-line-marks", no_argument, 0, Nolinemarks },
406	{ "no-preamble", no_argument, 0, Nopreamble },
407	{ "parse", no_argument, 0, Parse },
408	{ "no-prototypes", no_argument, 0, Prototypes },
409	{ "resolver", no_argument, 0, Resolver },
410	{ "symbol", no_argument, 0, Symbol },
411	{ "tree", no_argument, 0, Tree },
412	{ "tuple-expansion", no_argument, 0, TupleExpansion },
413	{ "validate", no_argument, 0, Validate },
414	{ 0, 0, 0, 0 }
415	}; // long_opts
416	int long_index;
417
418	opterr = 0; // (global) prevent getopt from printing error messages
419
420	bool Wsuppress = false, Werror = false;
421	int c;
422	while ( (c = getopt_long( argc, argv, "abBcCdefgGlLmnNpqrstTvwW:yzZD:F:", long_opts, &long_index )) != -1 ) {
423	switch ( c ) {
424	case Ast:
425	case 'a': // dump AST
426	astp = true;
427	break;
428	case Bresolver:
429	case 'b': // print before resolver steps
430	bresolvep = true;
431	break;
432	case 'B': // print before box steps
433	bboxp = true;
434	break;
435	case CtorInitFix:
436	case 'c': // print after constructors and destructors are replaced
437	ctorinitp = true;
438	break;
439	case 'C': // print before code generation
440	bcodegenp = true;
441	break;
442	case DeclStats:
443	case 'd':
444	declstatsp = true;
445	break;
446	case Expr:
447	case 'e': // dump AST after expression analysis
448	exprp = true;
449	break;
450	case ExprAlt:
451	case 'f': // print alternatives for expressions
452	expraltp = true;
453	break;
454	case Grammar:
455	case 'g': // bison debugging info (grammar rules)
456	yydebug = true;
457	break;
458	case 'G': // dump AST after instantiate generics
459	genericsp = true;
460	break;
461	case LibCFA:
462	case 'l': // generate libcfa.c
463	libcfap = true;
464	break;
465	case Linemarks:
466	case 'L': // print lines marks
467	linemarks = true;
468	break;
469	case Nopreamble:
470	case 'n': // do not read preamble
471	nopreludep = true;
472	break;
473	case Nolinemarks:
474	case 'N': // suppress line marks
475	linemarks = false;
476	break;
477	case Prototypes:
478	case 'p': // generate prototypes for preamble functions
479	noprotop = true;
480	break;
481	case 'm': // don't replace the main
482	nomainp = true;
483	break;
484	case Parse:
485	case 'q': // dump parse tree
486	parsep = true;
487	break;
488	case Resolver:
489	case 'r': // print resolver steps
490	resolvep = true;
491	break;
492	case Symbol:
493	case 's': // print symbol table events
494	symtabp = true;
495	break;
496	case Tree:
497	case 't': // build in tree
498	treep = true;
499	break;
500	case TupleExpansion:
501	case 'T': // print after tuple expansion
502	tuplep = true;
503	break;
504	case 'v': // dump AST after decl validation pass
505	validp = true;
506	break;
507	case 'w':
508	Wsuppress = true;
509	break;
510	case 'W':
511	if ( strcmp( optarg, "all" ) == 0 ) {
512	SemanticWarning_EnableAll();
513	} else if ( strcmp( optarg, "error" ) == 0 ) {
514	Werror = true;
515	} else {
516	char * warning = optarg;
517	Severity s;
518	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
519	warning += 3;
520	s = Severity::Suppress;
521	} else {
522	s = Severity::Warn;
523	} // if
524	SemanticWarning_Set( warning, s );
525	} // if
526	break;
527	case 'y': // dump AST on error
528	errorp = true;
529	break;
530	case 'z': // dump as codegen rather than AST
531	codegenp = true;
532	break;
533	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
534	prettycodegenp = true;
535	break;
536	case 'D': // ignore -Dxxx
537	break;
538	case 'F': // source file-name without suffix
539	filename = optarg;
540	break;
541	case '?':
542	if ( optopt ) { // short option ?
543	assertf( false, "Unknown option: -%c\n", (char)optopt );
544	} else {
545	assertf( false, "Unknown option: %s\n", argv[optind - 1] );
546	} // if
547	#if defined(__GNUC__) && __GNUC__ >= 7
548	__attribute__((fallthrough));
549	#endif
550	default:
551	abort();
552	} // switch
553	} // while
554
555	if ( Werror ) {
556	SemanticWarning_WarningAsError();
557	} // if
558	if ( Wsuppress ) {
559	SemanticWarning_SuppressAll();
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	int parseStatus = yyparse();
575
576	fclose( input );
577	if ( shouldExit \|\| parseStatus != 0 ) {
578	exit( parseStatus );
579	} // if
580	} // parse
581
582	static bool notPrelude( Declaration * decl ) {
583	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
584	} // notPrelude
585
586	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
587	list< Declaration * > decls;
588
589	if ( noprotop ) {
590	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
591	} else {
592	decls = translationUnit;
593	} // if
594
595	// depending on commandline options, either generate code or dump the AST
596	if ( codegenp ) {
597	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
598	} else {
599	printAll( decls, out );
600	}
601	} // dump
602
603	// Local Variables: //
604	// tab-width: 4 //
605	// mode: c++ //
606	// compile-command: "make install" //
607	// End: //

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