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source: src/main.cc @ e3e16bc

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

Last change on this file since e3e16bc was 9f5ecf5, checked in by Thierry Delisle <tdelisle@…>, 7 years ago
Skeleton for waitfor language support
Property mode set to `100644`
File size: 18.1 KB

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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 : Andrew Beach
13	// Last Modified On : Wed Jul 26 14:38:00 2017
14	// Update Count : 443
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/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/CopyParams.h" // for copyParams
46	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
47	#include "GenPoly/Lvalue.h" // for convertLvalue
48	#include "GenPoly/Specialize.h" // for convertSpecializations
49	#include "InitTweak/FixInit.h" // for fix
50	#include "InitTweak/GenInit.h" // for genInit
51	#include "MakeLibCfa.h" // for makeLibCfa
52	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
53	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
54	#include "Parser/TypedefTable.h" // for TypedefTable
55	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
56	#include "ResolvExpr/Resolver.h" // for resolve
57	#include "SymTab/Validate.h" // for validate
58	#include "SynTree/Declaration.h" // for Declaration
59	#include "SynTree/Visitor.h" // for acceptAll
60	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
61	#include "Virtual/ExpandCasts.h" // for expandCasts
62
63	using namespace std;
64
65	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
66
67
68	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
69	TypedefTable typedefTable;
70	DeclarationNode * parseTree = nullptr; // program parse tree
71
72	extern int yydebug; // set for -g flag (Grammar)
73	bool
74	astp = false,
75	bresolvep = false,
76	bboxp = false,
77	bcodegenp = false,
78	ctorinitp = false,
79	declstatsp = false,
80	exprp = false,
81	expraltp = 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	nolinemarks = 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	parse_cmdline( argc, argv, filename ); // process command-line arguments
177	CodeGen::FixMain::setReplaceMain( !nomainp );
178
179	try {
180	// choose to read the program from a file or stdin
181	if ( optind < argc ) { // any commands after the flags ? => input file name
182	input = fopen( argv[ optind ], "r" );
183	assertf( input, "cannot open %s\n", argv[ optind ] );
184	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
185	if ( filename == nullptr ) filename = argv[ optind ];
186	// prelude filename comes in differently
187	if ( libcfap ) filename = "prelude.cf";
188	optind += 1;
189	} else { // no input file name
190	input = stdin;
191	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
192	// a fake name along
193	if ( filename == nullptr ) filename = "stdin";
194	} // if
195
196	// read in the builtins, extras, and the prelude
197	if ( ! nopreludep ) { // include gcc builtins
198	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
199
200	// Read to gcc builtins, if not generating the cfa library
201	FILE * gcc_builtins = fopen( libcfap \| treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
202	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
203	parse( gcc_builtins, LinkageSpec::Compiler );
204
205	// read the extra prelude in, if not generating the cfa library
206	FILE * extras = fopen( libcfap \| treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
207	assertf( extras, "cannot open extras.cf\n" );
208	parse( extras, LinkageSpec::C );
209
210	if ( ! libcfap ) {
211	// read the prelude in, if not generating the cfa library
212	FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
213	assertf( prelude, "cannot open prelude.cf\n" );
214	parse( prelude, LinkageSpec::Intrinsic );
215
216	// Read to cfa builtins, if not generating the cfa library
217	FILE * builtins = fopen( libcfap \| treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
218	assertf( builtins, "cannot open builtins.cf\n" );
219	parse( builtins, LinkageSpec::BuiltinCFA );
220	} // if
221	} // if
222
223	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
224
225	if ( parsep ) {
226	parseTree->printList( cout );
227	delete parseTree;
228	return 0;
229	} // if
230
231	buildList( parseTree, translationUnit );
232	delete parseTree;
233	parseTree = nullptr;
234
235	if ( astp ) {
236	dump( translationUnit );
237	return 0;
238	} // if
239
240	// OPTPRINT( "Concurrency" )
241	// Concurrency::applyKeywords( translationUnit );
242
243	// add the assignment statement after the initialization of a type parameter
244	OPTPRINT( "validate" )
245	SymTab::validate( translationUnit, symtabp );
246	if ( symtabp ) {
247	deleteAll( translationUnit );
248	return 0;
249	} // if
250
251	if ( expraltp ) {
252	ResolvExpr::AlternativePrinter printer( cout );
253	acceptAll( translationUnit, printer );
254	return 0;
255	} // if
256
257	if ( validp ) {
258	dump( translationUnit );
259	return 0;
260	} // if
261
262	OPTPRINT( "mutate" )
263	ControlStruct::mutate( translationUnit );
264	OPTPRINT( "fixNames" )
265	CodeGen::fixNames( translationUnit );
266	OPTPRINT( "genInit" )
267	InitTweak::genInit( translationUnit );
268	OPTPRINT( "expandMemberTuples" );
269	Tuples::expandMemberTuples( translationUnit );
270	if ( libcfap ) {
271	// generate the bodies of cfa library functions
272	LibCfa::makeLibCfa( translationUnit );
273	} // if
274
275	if ( declstatsp ) {
276	CodeTools::printDeclStats( translationUnit );
277	deleteAll( translationUnit );
278	return 0;
279	}
280
281	if ( bresolvep ) {
282	dump( translationUnit );
283	return 0;
284	} // if
285
286	OPTPRINT( "resolve" )
287	ResolvExpr::resolve( translationUnit );
288	if ( exprp ) {
289	dump( translationUnit );
290	return 0;
291	} // if
292
293	// fix ObjectDecl - replaces ConstructorInit nodes
294	OPTPRINT( "fixInit" )
295	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
296	if ( ctorinitp ) {
297	dump ( translationUnit );
298	return 0;
299	} // if
300
301	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
302	Tuples::expandUniqueExpr( translationUnit );
303
304	OPTPRINT( "translateEHM" );
305	ControlStruct::translateEHM( translationUnit );
306
307	OPTPRINT( "generateWaitfor" );
308	Concurrency::generateWaitFor( translationUnit );
309
310	OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
311	GenPoly::convertSpecializations( translationUnit );
312
313	OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
314	Tuples::expandTuples( translationUnit );
315	if ( tuplep ) {
316	dump( translationUnit );
317	return 0;
318	}
319
320	OPTPRINT( "virtual expandCasts" ) // Must come after translateEHM
321	Virtual::expandCasts( translationUnit );
322
323	OPTPRINT("instantiateGenerics")
324	GenPoly::instantiateGeneric( translationUnit );
325	OPTPRINT( "copyParams" );
326	GenPoly::copyParams( translationUnit );
327	OPTPRINT( "convertLvalue" )
328	GenPoly::convertLvalue( translationUnit );
329
330	if ( bboxp ) {
331	dump( translationUnit );
332	return 0;
333	} // if
334	OPTPRINT( "box" )
335	GenPoly::box( translationUnit );
336
337	if ( bcodegenp ) {
338	dump( translationUnit );
339	return 0;
340	}
341
342	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
343	output = new ofstream( argv[ optind ] );
344	} // if
345
346	CodeTools::fillLocations( translationUnit );
347	CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, ! nolinemarks );
348
349	CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
350
351	if ( output != &cout ) {
352	delete output;
353	} // if
354	} catch ( SemanticError &e ) {
355	if ( errorp ) {
356	cerr << "---AST at error:---" << endl;
357	dump( translationUnit, cerr );
358	cerr << endl << "---End of AST, begin error message:---\n" << endl;
359	} // if
360	e.print( cerr );
361	if ( output != &cout ) {
362	delete output;
363	} // if
364	return 1;
365	} catch ( UnimplementedError &e ) {
366	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
367	if ( output != &cout ) {
368	delete output;
369	} // if
370	return 1;
371	} catch ( CompilerError &e ) {
372	cerr << "Compiler Error: " << e.get_what() << endl;
373	cerr << "(please report bugs to [REDACTED])" << endl;
374	if ( output != &cout ) {
375	delete output;
376	} // if
377	return 1;
378	} // try
379
380	deleteAll( translationUnit );
381	return 0;
382	} // main
383
384	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
385	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
386
387	static struct option long_opts[] = {
388	{ "ast", no_argument, 0, Ast },
389	{ "before-box", no_argument, 0, Bbox },
390	{ "before-resolver", no_argument, 0, Bresolver },
391	{ "ctorinitfix", no_argument, 0, CtorInitFix },
392	{ "decl-stats", no_argument, 0, DeclStats },
393	{ "expr", no_argument, 0, Expr },
394	{ "expralt", no_argument, 0, ExprAlt },
395	{ "grammar", no_argument, 0, Grammar },
396	{ "libcfa", no_argument, 0, LibCFA },
397	{ "no-preamble", no_argument, 0, Nopreamble },
398	{ "parse", no_argument, 0, Parse },
399	{ "no-prototypes", no_argument, 0, Prototypes },
400	{ "resolver", no_argument, 0, Resolver },
401	{ "symbol", no_argument, 0, Symbol },
402	{ "tree", no_argument, 0, Tree },
403	{ "tuple-expansion", no_argument, 0, TupleExpansion },
404	{ "validate", no_argument, 0, Validate },
405	{ 0, 0, 0, 0 }
406	}; // long_opts
407	int long_index;
408
409	opterr = 0; // (global) prevent getopt from printing error messages
410
411	int c;
412	while ( (c = getopt_long( argc, argv, "abBcCdefglLmnpqrstTvyzZD:F:", long_opts, &long_index )) != -1 ) {
413	switch ( c ) {
414	case Ast:
415	case 'a': // dump AST
416	astp = true;
417	break;
418	case Bresolver:
419	case 'b': // print before resolver steps
420	bresolvep = true;
421	break;
422	case 'B': // print before box steps
423	bboxp = true;
424	break;
425	case CtorInitFix:
426	case 'c': // print after constructors and destructors are replaced
427	ctorinitp = true;
428	break;
429	case 'C': // print before code generation
430	bcodegenp = true;
431	break;
432	case DeclStats:
433	case 'd':
434	declstatsp = true;
435	break;
436	case Expr:
437	case 'e': // dump AST after expression analysis
438	exprp = true;
439	break;
440	case ExprAlt:
441	case 'f': // print alternatives for expressions
442	expraltp = true;
443	break;
444	case Grammar:
445	case 'g': // bison debugging info (grammar rules)
446	yydebug = true;
447	break;
448	case LibCFA:
449	case 'l': // generate libcfa.c
450	libcfap = true;
451	break;
452	case 'L': // surpress lines marks
453	nolinemarks = true;
454	break;
455	case Nopreamble:
456	case 'n': // do not read preamble
457	nopreludep = true;
458	break;
459	case Prototypes:
460	case 'p': // generate prototypes for preamble functions
461	noprotop = true;
462	break;
463	case 'm': // don't replace the main
464	nomainp = true;
465	break;
466	case Parse:
467	case 'q': // dump parse tree
468	parsep = true;
469	break;
470	case Resolver:
471	case 'r': // print resolver steps
472	resolvep = true;
473	break;
474	case Symbol:
475	case 's': // print symbol table events
476	symtabp = true;
477	break;
478	case Tree:
479	case 't': // build in tree
480	treep = true;
481	break;
482	case TupleExpansion:
483	case 'T': // print after tuple expansion
484	tuplep = true;
485	break;
486	case 'v': // dump AST after decl validation pass
487	validp = true;
488	break;
489	case 'y': // dump AST on error
490	errorp = true;
491	break;
492	case 'z': // dump as codegen rather than AST
493	codegenp = true;
494	break;
495	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
496	prettycodegenp = true;
497	break;
498	case 'D': // ignore -Dxxx
499	break;
500	case 'F': // source file-name without suffix
501	filename = optarg;
502	break;
503	case '?':
504	if ( optopt ) { // short option ?
505	assertf( false, "Unknown option: -%c\n", (char)optopt );
506	} else {
507	assertf( false, "Unknown option: %s\n", argv[optind - 1] );
508	} // if
509	default:
510	abort();
511	} // switch
512	} // while
513	} // parse_cmdline
514
515	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
516	extern int yyparse( void );
517	extern FILE * yyin;
518	extern int yylineno;
519
520	::linkage = linkage; // set globals
521	yyin = input;
522	yylineno = 1;
523	typedefTable.enterScope();
524	int parseStatus = yyparse();
525
526	fclose( input );
527	if ( shouldExit \|\| parseStatus != 0 ) {
528	exit( parseStatus );
529	} // if
530	} // parse
531
532	static bool notPrelude( Declaration * decl ) {
533	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
534	} // notPrelude
535
536	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
537	list< Declaration * > decls;
538
539	if ( noprotop ) {
540	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
541	} else {
542	decls = translationUnit;
543	} // if
544
545	// depending on commandline options, either generate code or dump the AST
546	if ( codegenp ) {
547	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
548	} else {
549	printAll( decls, out );
550	}
551	deleteAll( translationUnit );
552	} // dump
553
554	// Local Variables: //
555	// tab-width: 4 //
556	// mode: c++ //
557	// compile-command: "make install" //
558	// End: //

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