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source: src/main.cc @ 08fc48f

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 08fc48f was 08fc48f, checked in by Thierry Delisle <tdelisle@…>, 7 years ago
Big header cleaning pass - commit 1
Property mode set to `100644`
File size: 17.9 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 <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/CompilerError.h" // for CompilerError
37	#include "Common/SemanticError.h" // for SemanticError
38	#include "Common/UnimplementedError.h" // for UnimplementedError
39	#include "Common/utility.h" // for deleteAll, filter, printAll
40	#include "ControlStruct/ExceptTranslate.h" // for translateEHM
41	#include "ControlStruct/Mutate.h" // for mutate
42	#include "GenPoly/Box.h" // for box
43	#include "GenPoly/CopyParams.h" // for copyParams
44	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
45	#include "GenPoly/Lvalue.h" // for convertLvalue
46	#include "GenPoly/Specialize.h" // for convertSpecializations
47	#include "InitTweak/FixInit.h" // for fix
48	#include "InitTweak/GenInit.h" // for genInit
49	#include "MakeLibCfa.h" // for makeLibCfa
50	#include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic
51	#include "Parser/ParseNode.h" // for DeclarationNode, buildList
52	#include "Parser/TypedefTable.h" // for TypedefTable
53	#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
54	#include "ResolvExpr/Resolver.h" // for resolve
55	#include "SymTab/Validate.h" // for validate
56	#include "SynTree/Declaration.h" // for Declaration
57	#include "SynTree/Visitor.h" // for acceptAll
58	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
59	#include "Virtual/ExpandCasts.h" // for expandCasts
60
61	using namespace std;
62
63	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
64
65
66	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
67	TypedefTable typedefTable;
68	DeclarationNode * parseTree = nullptr; // program parse tree
69
70	extern int yydebug; // set for -g flag (Grammar)
71	bool
72	astp = false,
73	bresolvep = false,
74	bboxp = false,
75	bcodegenp = false,
76	ctorinitp = false,
77	declstatsp = false,
78	exprp = false,
79	expraltp = false,
80	libcfap = false,
81	nopreludep = false,
82	noprotop = false,
83	nomainp = false,
84	parsep = false,
85	resolvep = false, // used in AlternativeFinder
86	symtabp = false,
87	treep = false,
88	tuplep = false,
89	validp = false,
90	errorp = false,
91	codegenp = false,
92	prettycodegenp = false,
93	nolinemarks = false;
94
95	static void parse_cmdline( int argc, char argv[], const char & filename );
96	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
97	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
98
99	static void backtrace( int start ) { // skip first N stack frames
100	enum { Frames = 50 };
101	void * array[Frames];
102	int size = ::backtrace( array, Frames );
103	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
104
105	*index( messages[0], '(' ) = '\0'; // find executable name
106	cerr << "Stack back trace for: " << messages[0] << endl;
107
108	// skip last 2 stack frames after main
109	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
110	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
111	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
112	if ( *p == '(' ) {
113	mangled_name = p;
114	} else if ( *p == '+' ) {
115	offset_begin = p;
116	} else if ( *p == ')' ) {
117	offset_end = p;
118	break;
119	} // if
120	} // for
121
122	// if line contains symbol, attempt to demangle
123	int frameNo = i - start;
124	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
125	*mangled_name++ = '\0'; // delimit strings
126	*offset_begin++ = '\0';
127	*offset_end++ = '\0';
128
129	int status;
130	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
131	// bug in __cxa_demangle for single-character lower-case non-mangled names
132	if ( status == 0 ) { // demangling successful ?
133	cerr << "(" << frameNo << ") " << messages[i] << " : "
134	<< real_name << "+" << offset_begin << offset_end << endl;
135	} else { // otherwise, output mangled name
136	cerr << "(" << frameNo << ") " << messages[i] << " : "
137	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
138	} // if
139
140	free( real_name );
141	} else { // otherwise, print the whole line
142	cerr << "(" << frameNo << ") " << messages[i] << endl;
143	} // if
144	} // for
145
146	free( messages );
147	} // backtrace
148
149	void sigSegvBusHandler( int sig_num ) {
150	cerr << "CFA runtime error program cfa-cpp terminated with "
151	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
152	<< "." << endl;
153	backtrace( 2 ); // skip first 2 stack frames
154	exit( EXIT_FAILURE );
155	} // sigSegvBusHandler
156
157	void sigAbortHandler( __attribute__((unused)) int sig_num ) {
158	backtrace( 6 ); // skip first 6 stack frames
159	signal( SIGABRT, SIG_DFL); // reset default signal handler
160	raise( SIGABRT ); // reraise SIGABRT
161	} // sigAbortHandler
162
163
164	int main( int argc, char * argv[] ) {
165	FILE * input; // use FILE rather than istream because yyin is FILE
166	ostream *output = & cout;
167	const char *filename = nullptr;
168	list< Declaration * > translationUnit;
169
170	signal( SIGSEGV, sigSegvBusHandler );
171	signal( SIGBUS, sigSegvBusHandler );
172	signal( SIGABRT, sigAbortHandler );
173
174	parse_cmdline( argc, argv, filename ); // process command-line arguments
175	CodeGen::FixMain::setReplaceMain( !nomainp );
176
177	try {
178	// choose to read the program from a file or stdin
179	if ( optind < argc ) { // any commands after the flags ? => input file name
180	input = fopen( argv[ optind ], "r" );
181	assertf( input, "cannot open %s\n", argv[ optind ] );
182	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
183	if ( filename == nullptr ) filename = argv[ optind ];
184	// prelude filename comes in differently
185	if ( libcfap ) filename = "prelude.cf";
186	optind += 1;
187	} else { // no input file name
188	input = stdin;
189	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
190	// a fake name along
191	if ( filename == nullptr ) filename = "stdin";
192	} // if
193
194	// read in the builtins, extras, and the prelude
195	if ( ! nopreludep ) { // include gcc builtins
196	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
197
198	// Read to gcc builtins, if not generating the cfa library
199	FILE * gcc_builtins = fopen( libcfap \| treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
200	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
201	parse( gcc_builtins, LinkageSpec::Compiler );
202
203	// read the extra prelude in, if not generating the cfa library
204	FILE * extras = fopen( libcfap \| treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
205	assertf( extras, "cannot open extras.cf\n" );
206	parse( extras, LinkageSpec::C );
207
208	if ( ! libcfap ) {
209	// read the prelude in, if not generating the cfa library
210	FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
211	assertf( prelude, "cannot open prelude.cf\n" );
212	parse( prelude, LinkageSpec::Intrinsic );
213
214	// Read to cfa builtins, if not generating the cfa library
215	FILE * builtins = fopen( libcfap \| treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
216	assertf( builtins, "cannot open builtins.cf\n" );
217	parse( builtins, LinkageSpec::BuiltinCFA );
218	} // if
219	} // if
220
221	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
222
223	if ( parsep ) {
224	parseTree->printList( cout );
225	delete parseTree;
226	return 0;
227	} // if
228
229	buildList( parseTree, translationUnit );
230	delete parseTree;
231	parseTree = nullptr;
232
233	if ( astp ) {
234	dump( translationUnit );
235	return 0;
236	} // if
237
238	// OPTPRINT( "Concurrency" )
239	// Concurrency::applyKeywords( translationUnit );
240
241	// add the assignment statement after the initialization of a type parameter
242	OPTPRINT( "validate" )
243	SymTab::validate( translationUnit, symtabp );
244	if ( symtabp ) {
245	deleteAll( translationUnit );
246	return 0;
247	} // if
248
249	if ( expraltp ) {
250	ResolvExpr::AlternativePrinter printer( cout );
251	acceptAll( translationUnit, printer );
252	return 0;
253	} // if
254
255	if ( validp ) {
256	dump( translationUnit );
257	return 0;
258	} // if
259
260	OPTPRINT( "mutate" )
261	ControlStruct::mutate( translationUnit );
262	OPTPRINT( "fixNames" )
263	CodeGen::fixNames( translationUnit );
264	OPTPRINT( "genInit" )
265	InitTweak::genInit( translationUnit );
266	OPTPRINT( "expandMemberTuples" );
267	Tuples::expandMemberTuples( translationUnit );
268	if ( libcfap ) {
269	// generate the bodies of cfa library functions
270	LibCfa::makeLibCfa( translationUnit );
271	} // if
272
273	if ( declstatsp ) {
274	CodeTools::printDeclStats( translationUnit );
275	deleteAll( translationUnit );
276	return 0;
277	}
278
279	if ( bresolvep ) {
280	dump( translationUnit );
281	return 0;
282	} // if
283
284	OPTPRINT( "resolve" )
285	ResolvExpr::resolve( translationUnit );
286	if ( exprp ) {
287	dump( translationUnit );
288	return 0;
289	} // if
290
291	// fix ObjectDecl - replaces ConstructorInit nodes
292	OPTPRINT( "fixInit" )
293	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
294	if ( ctorinitp ) {
295	dump ( translationUnit );
296	return 0;
297	} // if
298
299	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
300	Tuples::expandUniqueExpr( translationUnit );
301
302	OPTPRINT( "translateEHM" );
303	ControlStruct::translateEHM( translationUnit );
304
305	OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
306	GenPoly::convertSpecializations( translationUnit );
307
308	OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
309	Tuples::expandTuples( translationUnit );
310	if ( tuplep ) {
311	dump( translationUnit );
312	return 0;
313	}
314
315	OPTPRINT( "virtual expandCasts" ) // Must come after translateEHM
316	Virtual::expandCasts( translationUnit );
317
318	OPTPRINT("instantiateGenerics")
319	GenPoly::instantiateGeneric( translationUnit );
320	OPTPRINT( "copyParams" );
321	GenPoly::copyParams( translationUnit );
322	OPTPRINT( "convertLvalue" )
323	GenPoly::convertLvalue( translationUnit );
324
325	if ( bboxp ) {
326	dump( translationUnit );
327	return 0;
328	} // if
329	OPTPRINT( "box" )
330	GenPoly::box( translationUnit );
331
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	CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, ! nolinemarks );
343
344	CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
345
346	if ( output != &cout ) {
347	delete output;
348	} // if
349	} catch ( SemanticError &e ) {
350	if ( errorp ) {
351	cerr << "---AST at error:---" << endl;
352	dump( translationUnit, cerr );
353	cerr << endl << "---End of AST, begin error message:---\n" << endl;
354	} // if
355	e.print( cerr );
356	if ( output != &cout ) {
357	delete output;
358	} // if
359	return 1;
360	} catch ( UnimplementedError &e ) {
361	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
362	if ( output != &cout ) {
363	delete output;
364	} // if
365	return 1;
366	} catch ( CompilerError &e ) {
367	cerr << "Compiler Error: " << e.get_what() << endl;
368	cerr << "(please report bugs to [REDACTED])" << endl;
369	if ( output != &cout ) {
370	delete output;
371	} // if
372	return 1;
373	} // try
374
375	deleteAll( translationUnit );
376	return 0;
377	} // main
378
379	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
380	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
381
382	static struct option long_opts[] = {
383	{ "ast", no_argument, 0, Ast },
384	{ "before-box", no_argument, 0, Bbox },
385	{ "before-resolver", no_argument, 0, Bresolver },
386	{ "ctorinitfix", no_argument, 0, CtorInitFix },
387	{ "decl-stats", no_argument, 0, DeclStats },
388	{ "expr", no_argument, 0, Expr },
389	{ "expralt", no_argument, 0, ExprAlt },
390	{ "grammar", no_argument, 0, Grammar },
391	{ "libcfa", no_argument, 0, LibCFA },
392	{ "no-preamble", no_argument, 0, Nopreamble },
393	{ "parse", no_argument, 0, Parse },
394	{ "no-prototypes", no_argument, 0, Prototypes },
395	{ "resolver", no_argument, 0, Resolver },
396	{ "symbol", no_argument, 0, Symbol },
397	{ "tree", no_argument, 0, Tree },
398	{ "tuple-expansion", no_argument, 0, TupleExpansion },
399	{ "validate", no_argument, 0, Validate },
400	{ 0, 0, 0, 0 }
401	}; // long_opts
402	int long_index;
403
404	opterr = 0; // (global) prevent getopt from printing error messages
405
406	int c;
407	while ( (c = getopt_long( argc, argv, "abBcCdefglLmnpqrstTvyzZD:F:", long_opts, &long_index )) != -1 ) {
408	switch ( c ) {
409	case Ast:
410	case 'a': // dump AST
411	astp = true;
412	break;
413	case Bresolver:
414	case 'b': // print before resolver steps
415	bresolvep = true;
416	break;
417	case 'B': // print before box steps
418	bboxp = true;
419	break;
420	case CtorInitFix:
421	case 'c': // print after constructors and destructors are replaced
422	ctorinitp = true;
423	break;
424	case 'C': // print before code generation
425	bcodegenp = true;
426	break;
427	case DeclStats:
428	case 'd':
429	declstatsp = true;
430	break;
431	case Expr:
432	case 'e': // dump AST after expression analysis
433	exprp = true;
434	break;
435	case ExprAlt:
436	case 'f': // print alternatives for expressions
437	expraltp = true;
438	break;
439	case Grammar:
440	case 'g': // bison debugging info (grammar rules)
441	yydebug = true;
442	break;
443	case LibCFA:
444	case 'l': // generate libcfa.c
445	libcfap = true;
446	break;
447	case 'L': // surpress lines marks
448	nolinemarks = true;
449	break;
450	case Nopreamble:
451	case 'n': // do not read preamble
452	nopreludep = true;
453	break;
454	case Prototypes:
455	case 'p': // generate prototypes for preamble functions
456	noprotop = true;
457	break;
458	case 'm': // don't replace the main
459	nomainp = true;
460	break;
461	case Parse:
462	case 'q': // dump parse tree
463	parsep = true;
464	break;
465	case Resolver:
466	case 'r': // print resolver steps
467	resolvep = true;
468	break;
469	case Symbol:
470	case 's': // print symbol table events
471	symtabp = true;
472	break;
473	case Tree:
474	case 't': // build in tree
475	treep = true;
476	break;
477	case TupleExpansion:
478	case 'T': // print after tuple expansion
479	tuplep = true;
480	break;
481	case 'v': // dump AST after decl validation pass
482	validp = true;
483	break;
484	case 'y': // dump AST on error
485	errorp = true;
486	break;
487	case 'z': // dump as codegen rather than AST
488	codegenp = true;
489	break;
490	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
491	prettycodegenp = true;
492	break;
493	case 'D': // ignore -Dxxx
494	break;
495	case 'F': // source file-name without suffix
496	filename = optarg;
497	break;
498	case '?':
499	if ( optopt ) { // short option ?
500	assertf( false, "Unknown option: -%c\n", (char)optopt );
501	} else {
502	assertf( false, "Unknown option: %s\n", argv[optind - 1] );
503	} // if
504	default:
505	abort();
506	} // switch
507	} // while
508	} // parse_cmdline
509
510	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
511	extern int yyparse( void );
512	extern FILE * yyin;
513	extern int yylineno;
514
515	::linkage = linkage; // set globals
516	yyin = input;
517	yylineno = 1;
518	typedefTable.enterScope();
519	int parseStatus = yyparse();
520
521	fclose( input );
522	if ( shouldExit \|\| parseStatus != 0 ) {
523	exit( parseStatus );
524	} // if
525	} // parse
526
527	static bool notPrelude( Declaration * decl ) {
528	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
529	} // notPrelude
530
531	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
532	list< Declaration * > decls;
533
534	if ( noprotop ) {
535	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
536	} else {
537	decls = translationUnit;
538	} // if
539
540	// depending on commandline options, either generate code or dump the AST
541	if ( codegenp ) {
542	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
543	} else {
544	printAll( decls, out );
545	}
546	deleteAll( translationUnit );
547	} // dump
548
549	// Local Variables: //
550	// tab-width: 4 //
551	// mode: c++ //
552	// compile-command: "make install" //
553	// End: //

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