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source: src/main.cc @ 3bd1eb4

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 3bd1eb4 was c850687, checked in by Andrew Beach <ajbeach@…>, 7 years ago
Add -L flag to turn of line marks. Updated the keyword list.
Property mode set to `100644`
File size: 15.3 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 : Andrew Beach
13	// Last Modified On : Wed May 10 14:45:00 2017
14	// Update Count : 437
15	//
16
17	#include <iostream>
18	#include <fstream>
19	#include <signal.h> // signal
20	#include <getopt.h> // getopt
21	#include <execinfo.h> // backtrace, backtrace_symbols
22	#include <cxxabi.h> // __cxa_demangle
23	#include <cstring> // index
24
25	using namespace std;
26
27	#include "Parser/lex.h"
28	#include "Parser/parser.h"
29	#include "Parser/TypedefTable.h"
30	#include "GenPoly/Lvalue.h"
31	#include "GenPoly/Specialize.h"
32	#include "GenPoly/Box.h"
33	#include "GenPoly/CopyParams.h"
34	#include "GenPoly/InstantiateGeneric.h"
35	#include "Concurrency/Keywords.h"
36	#include "CodeGen/Generate.h"
37	#include "CodeGen/FixNames.h"
38	#include "CodeGen/FixMain.h"
39	#include "CodeTools/DeclStats.h"
40	#include "CodeTools/TrackLoc.h"
41	#include "ControlStruct/Mutate.h"
42	#include "SymTab/Validate.h"
43	#include "ResolvExpr/AlternativePrinter.h"
44	#include "ResolvExpr/Resolver.h"
45	#include "MakeLibCfa.h"
46	#include "InitTweak/GenInit.h"
47	#include "InitTweak/FixInit.h"
48	#include "Common/UnimplementedError.h"
49	#include "../config.h"
50	#include "Tuples/Tuples.h"
51
52	using namespace std;
53
54	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
55
56
57	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
58	TypedefTable typedefTable;
59	DeclarationNode * parseTree = nullptr; // program parse tree
60
61	extern int yydebug; // set for -g flag (Grammar)
62	bool
63	astp = false,
64	bresolvep = false,
65	bboxp = false,
66	ctorinitp = false,
67	declstatsp = false,
68	exprp = false,
69	expraltp = false,
70	libcfap = false,
71	nopreludep = false,
72	noprotop = false,
73	nomainp = false,
74	parsep = false,
75	resolvep = false, // used in AlternativeFinder
76	symtabp = false,
77	treep = false,
78	tuplep = false,
79	validp = false,
80	errorp = false,
81	codegenp = false,
82	prettycodegenp = false,
83	nolinemarks = false;
84
85	static void parse_cmdline( int argc, char argv[], const char & filename );
86	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
87	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
88
89	static void backtrace( int start ) { // skip first N stack frames
90	enum { Frames = 50 };
91	void * array[Frames];
92	int size = ::backtrace( array, Frames );
93	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
94
95	*index( messages[0], '(' ) = '\0'; // find executable name
96	cerr << "Stack back trace for: " << messages[0] << endl;
97
98	// skip last 2 stack frames after main
99	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
100	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
101	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
102	if ( *p == '(' ) {
103	mangled_name = p;
104	} else if ( *p == '+' ) {
105	offset_begin = p;
106	} else if ( *p == ')' ) {
107	offset_end = p;
108	break;
109	} // if
110	} // for
111
112	// if line contains symbol, attempt to demangle
113	int frameNo = i - start;
114	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
115	*mangled_name++ = '\0'; // delimit strings
116	*offset_begin++ = '\0';
117	*offset_end++ = '\0';
118
119	int status;
120	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
121	// bug in __cxa_demangle for single-character lower-case non-mangled names
122	if ( status == 0 ) { // demangling successful ?
123	cerr << "(" << frameNo << ") " << messages[i] << " : "
124	<< real_name << "+" << offset_begin << offset_end << endl;
125	} else { // otherwise, output mangled name
126	cerr << "(" << frameNo << ") " << messages[i] << " : "
127	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
128	} // if
129
130	free( real_name );
131	} else { // otherwise, print the whole line
132	cerr << "(" << frameNo << ") " << messages[i] << endl;
133	} // if
134	} // for
135
136	free( messages );
137	} // backtrace
138
139	void sigSegvBusHandler( int sig_num ) {
140	cerr << "CFA runtime error program cfa-cpp terminated with "
141	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
142	<< "." << endl;
143	backtrace( 2 ); // skip first 2 stack frames
144	exit( EXIT_FAILURE );
145	} // sigSegvBusHandler
146
147	void sigAbortHandler( int sig_num ) {
148	backtrace( 6 ); // skip first 6 stack frames
149	signal( SIGABRT, SIG_DFL); // reset default signal handler
150	raise( SIGABRT ); // reraise SIGABRT
151	} // sigAbortHandler
152
153
154	int main( int argc, char * argv[] ) {
155	FILE * input; // use FILE rather than istream because yyin is FILE
156	ostream *output = & cout;
157	const char *filename = nullptr;
158	list< Declaration * > translationUnit;
159
160	signal( SIGSEGV, sigSegvBusHandler );
161	signal( SIGBUS, sigSegvBusHandler );
162	signal( SIGABRT, sigAbortHandler );
163
164	parse_cmdline( argc, argv, filename ); // process command-line arguments
165	CodeGen::FixMain::setReplaceMain( !nomainp );
166
167	try {
168	// choose to read the program from a file or stdin
169	if ( optind < argc ) { // any commands after the flags ? => input file name
170	input = fopen( argv[ optind ], "r" );
171	assertf( input, "cannot open %s\n", argv[ optind ] );
172	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
173	if ( filename == nullptr ) filename = argv[ optind ];
174	// prelude filename comes in differently
175	if ( libcfap ) filename = "prelude.cf";
176	optind += 1;
177	} else { // no input file name
178	input = stdin;
179	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
180	// a fake name along
181	if ( filename == nullptr ) filename = "stdin";
182	} // if
183
184	// read in the builtins, extras, and the prelude
185	if ( ! nopreludep ) { // include gcc builtins
186	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
187	FILE * builtins = fopen( libcfap \| treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
188	assertf( builtins, "cannot open builtins.cf\n" );
189	parse( builtins, LinkageSpec::Compiler );
190
191	// read the extra prelude in, if not generating the cfa library
192	FILE * extras = fopen( libcfap \| treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
193	assertf( extras, "cannot open extras.cf\n" );
194	parse( extras, LinkageSpec::C );
195
196	if ( ! libcfap ) {
197	// read the prelude in, if not generating the cfa library
198	FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
199	assertf( prelude, "cannot open prelude.cf\n" );
200	parse( prelude, LinkageSpec::Intrinsic );
201	} // if
202	} // if
203
204	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
205
206	if ( parsep ) {
207	parseTree->printList( cout );
208	delete parseTree;
209	return 0;
210	} // if
211
212	buildList( parseTree, translationUnit );
213	delete parseTree;
214	parseTree = nullptr;
215
216	if ( astp ) {
217	dump( translationUnit );
218	return 0;
219	} // if
220
221	// OPTPRINT( "Concurrency" )
222	// Concurrency::applyKeywords( translationUnit );
223
224	// add the assignment statement after the initialization of a type parameter
225	OPTPRINT( "validate" )
226	SymTab::validate( translationUnit, symtabp );
227	if ( symtabp ) {
228	deleteAll( translationUnit );
229	return 0;
230	} // if
231
232	if ( expraltp ) {
233	ResolvExpr::AlternativePrinter printer( cout );
234	acceptAll( translationUnit, printer );
235	return 0;
236	} // if
237
238	if ( validp ) {
239	dump( translationUnit );
240	return 0;
241	} // if
242
243	OPTPRINT( "mutate" )
244	ControlStruct::mutate( translationUnit );
245	OPTPRINT( "fixNames" )
246	CodeGen::fixNames( translationUnit );
247	OPTPRINT( "genInit" )
248	InitTweak::genInit( translationUnit );
249	OPTPRINT( "expandMemberTuples" );
250	Tuples::expandMemberTuples( translationUnit );
251	if ( libcfap ) {
252	// generate the bodies of cfa library functions
253	LibCfa::makeLibCfa( translationUnit );
254	} // if
255
256	if ( declstatsp ) {
257	CodeTools::printDeclStats( translationUnit );
258	deleteAll( translationUnit );
259	return 0;
260	}
261
262	if ( bresolvep ) {
263	dump( translationUnit );
264	return 0;
265	} // if
266
267	OPTPRINT( "resolve" )
268	ResolvExpr::resolve( translationUnit );
269	if ( exprp ) {
270	dump( translationUnit );
271	return 0;
272	} // if
273
274	// fix ObjectDecl - replaces ConstructorInit nodes
275	OPTPRINT( "fixInit" )
276	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
277	if ( ctorinitp ) {
278	dump ( translationUnit );
279	return 0;
280	} // if
281
282	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
283	Tuples::expandUniqueExpr( translationUnit );
284
285	OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
286	GenPoly::convertSpecializations( translationUnit );
287
288	OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
289	Tuples::expandTuples( translationUnit );
290	if ( tuplep ) {
291	dump( translationUnit );
292	return 0;
293	}
294
295	OPTPRINT("instantiateGenerics")
296	GenPoly::instantiateGeneric( translationUnit );
297	OPTPRINT( "copyParams" );
298	GenPoly::copyParams( translationUnit );
299	OPTPRINT( "convertLvalue" )
300	GenPoly::convertLvalue( translationUnit );
301
302	if ( bboxp ) {
303	dump( translationUnit );
304	return 0;
305	} // if
306	OPTPRINT( "box" )
307	GenPoly::box( translationUnit );
308
309	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
310	output = new ofstream( argv[ optind ] );
311	} // if
312
313	CodeTools::fillLocations( translationUnit );
314	CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, ! nolinemarks );
315
316	CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
317
318	if ( output != &cout ) {
319	delete output;
320	} // if
321	} catch ( SemanticError &e ) {
322	if ( errorp ) {
323	cerr << "---AST at error:---" << endl;
324	dump( translationUnit, cerr );
325	cerr << endl << "---End of AST, begin error message:---\n" << endl;
326	} // if
327	e.print( cerr );
328	if ( output != &cout ) {
329	delete output;
330	} // if
331	return 1;
332	} catch ( UnimplementedError &e ) {
333	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
334	if ( output != &cout ) {
335	delete output;
336	} // if
337	return 1;
338	} catch ( CompilerError &e ) {
339	cerr << "Compiler Error: " << e.get_what() << endl;
340	cerr << "(please report bugs to [REDACTED])" << endl;
341	if ( output != &cout ) {
342	delete output;
343	} // if
344	return 1;
345	} // try
346
347	deleteAll( translationUnit );
348	return 0;
349	} // main
350
351	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
352	enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
353
354	static struct option long_opts[] = {
355	{ "ast", no_argument, 0, Ast },
356	{ "before-box", no_argument, 0, Bbox },
357	{ "before-resolver", no_argument, 0, Bresolver },
358	{ "ctorinitfix", no_argument, 0, CtorInitFix },
359	{ "decl-stats", no_argument, 0, DeclStats },
360	{ "expr", no_argument, 0, Expr },
361	{ "expralt", no_argument, 0, ExprAlt },
362	{ "grammar", no_argument, 0, Grammar },
363	{ "libcfa", no_argument, 0, LibCFA },
364	{ "no-preamble", no_argument, 0, Nopreamble },
365	{ "parse", no_argument, 0, Parse },
366	{ "no-prototypes", no_argument, 0, Prototypes },
367	{ "resolver", no_argument, 0, Resolver },
368	{ "symbol", no_argument, 0, Symbol },
369	{ "tree", no_argument, 0, Tree },
370	{ "tuple-expansion", no_argument, 0, TupleExpansion },
371	{ "validate", no_argument, 0, Validate },
372	{ 0, 0, 0, 0 }
373	}; // long_opts
374	int long_index;
375
376	opterr = 0; // (global) prevent getopt from printing error messages
377
378	int c;
379	while ( (c = getopt_long( argc, argv, "abBcdefglLmnpqrstTvyzZD:F:", long_opts, &long_index )) != -1 ) {
380	switch ( c ) {
381	case Ast:
382	case 'a': // dump AST
383	astp = true;
384	break;
385	case Bresolver:
386	case 'b': // print before resolver steps
387	bresolvep = true;
388	break;
389	case 'B': // print before box steps
390	bboxp = true;
391	break;
392	case CtorInitFix:
393	case 'c': // print after constructors and destructors are replaced
394	ctorinitp = true;
395	break;
396	case DeclStats:
397	case 'd':
398	declstatsp = true;
399	break;
400	case Expr:
401	case 'e': // dump AST after expression analysis
402	exprp = true;
403	break;
404	case ExprAlt:
405	case 'f': // print alternatives for expressions
406	expraltp = true;
407	break;
408	case Grammar:
409	case 'g': // bison debugging info (grammar rules)
410	yydebug = true;
411	break;
412	case LibCFA:
413	case 'l': // generate libcfa.c
414	libcfap = true;
415	break;
416	case 'L': // surpress lines marks
417	nolinemarks = true;
418	break;
419	case Nopreamble:
420	case 'n': // do not read preamble
421	nopreludep = true;
422	break;
423	case Prototypes:
424	case 'p': // generate prototypes for preamble functions
425	noprotop = true;
426	break;
427	case 'm': // don't replace the main
428	nomainp = true;
429	break;
430	case Parse:
431	case 'q': // dump parse tree
432	parsep = true;
433	break;
434	case Resolver:
435	case 'r': // print resolver steps
436	resolvep = true;
437	break;
438	case Symbol:
439	case 's': // print symbol table events
440	symtabp = true;
441	break;
442	case Tree:
443	case 't': // build in tree
444	treep = true;
445	break;
446	case TupleExpansion:
447	case 'T': // print after tuple expansion
448	tuplep = true;
449	break;
450	case 'v': // dump AST after decl validation pass
451	validp = true;
452	break;
453	case 'y': // dump AST on error
454	errorp = true;
455	break;
456	case 'z': // dump as codegen rather than AST
457	codegenp = true;
458	break;
459	case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
460	prettycodegenp = true;
461	break;
462	case 'D': // ignore -Dxxx
463	break;
464	case 'F': // source file-name without suffix
465	filename = optarg;
466	break;
467	case '?':
468	assertf( false, "Unknown option: '%c'\n", (char)optopt );
469	default:
470	abort();
471	} // switch
472	} // while
473	} // parse_cmdline
474
475	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
476	extern int yyparse( void );
477	extern FILE * yyin;
478	extern int yylineno;
479
480	::linkage = linkage; // set globals
481	yyin = input;
482	yylineno = 1;
483	typedefTable.enterScope();
484	int parseStatus = yyparse();
485
486	fclose( input );
487	if ( shouldExit \|\| parseStatus != 0 ) {
488	exit( parseStatus );
489	} // if
490	} // parse
491
492	static bool notPrelude( Declaration * decl ) {
493	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
494	} // notPrelude
495
496	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
497	list< Declaration * > decls;
498
499	if ( noprotop ) {
500	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
501	} else {
502	decls = translationUnit;
503	} // if
504
505	// depending on commandline options, either generate code or dump the AST
506	if ( codegenp ) {
507	CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
508	} else {
509	printAll( decls, out );
510	}
511	deleteAll( translationUnit );
512	} // dump
513
514	// Local Variables: //
515	// tab-width: 4 //
516	// mode: c++ //
517	// compile-command: "make install" //
518	// End: //

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