source: src/main.cc@ 44bca7f

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum with_gc
Last change on this file since 44bca7f was 44bca7f, checked in by Peter A. Buhr <pabuhr@…>, 8 years ago

first attempt at warning control
  • Property mode set to 100644
File size: 19.7 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
62using namespace std;
63
64#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
65
66
67LinkageSpec::Spec linkage = LinkageSpec::Cforall;
68TypedefTable typedefTable;
69DeclarationNode * parseTree = nullptr; // program parse tree
70
71extern int yydebug; // set for -g flag (Grammar)
72bool
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
97static void parse_cmdline( int argc, char *argv[], const char *& filename );
98static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
99static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
100
101static 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
151void 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
159void 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
166int 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
393void 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 for ( auto & w : WarningFormats ) {
511 w.severity = Severity::Suppress;
512 } // for
513 break;
514 case 'W':
515 if ( strcmp( optarg, "all" ) == 0 ) {
516 for ( auto & w : WarningFormats ) {
517 if ( w.severity == Severity::Suppress ) w.severity = Severity::Warn;
518 } // for
519 } else if ( strcmp( optarg, "error" ) == 0 ) {
520 Werror = true;
521 } else {
522 char * warning = optarg;
523 Severity s;
524 if ( strncmp( optarg, "no-", 3 ) == 0 ) {
525 warning += 3;
526 s = Severity::Suppress;
527 } else {
528 s = Severity::Warn;
529 } // if
530 for ( auto & w : WarningFormats ) {
531 if ( strcmp( warning, w.name ) == 0 ) { // replace the argument for cfa-cpp
532 w.severity = s;
533 break;
534 } // if
535 } // for
536 } // if
537 break;
538 case 'y': // dump AST on error
539 errorp = true;
540 break;
541 case 'z': // dump as codegen rather than AST
542 codegenp = true;
543 break;
544 case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
545 prettycodegenp = true;
546 break;
547 case 'D': // ignore -Dxxx
548 break;
549 case 'F': // source file-name without suffix
550 filename = optarg;
551 break;
552 case '?':
553 if ( optopt ) { // short option ?
554 assertf( false, "Unknown option: -%c\n", (char)optopt );
555 } else {
556 assertf( false, "Unknown option: %s\n", argv[optind - 1] );
557 } // if
558 #if __GNUC__ < 7
559 #else
560 __attribute__((fallthrough));
561 #endif
562 default:
563 abort();
564 } // switch
565 } // while
566
567 if ( Werror ) {
568 for ( auto & w : WarningFormats ) {
569 if ( w.severity == Severity::Warn ) w.severity = Severity::Error;
570 } // for
571 } // if
572 // for ( const auto w : WarningFormats ) {
573 // cout << w.name << ' ' << (int)w.severity << endl;
574 // } // for
575} // parse_cmdline
576
577static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
578 extern int yyparse( void );
579 extern FILE * yyin;
580 extern int yylineno;
581
582 ::linkage = linkage; // set globals
583 yyin = input;
584 yylineno = 1;
585 typedefTable.enterScope();
586 int parseStatus = yyparse();
587
588 fclose( input );
589 if ( shouldExit || parseStatus != 0 ) {
590 exit( parseStatus );
591 } // if
592} // parse
593
594static bool notPrelude( Declaration * decl ) {
595 return ! LinkageSpec::isBuiltin( decl->get_linkage() );
596} // notPrelude
597
598static void dump( list< Declaration * > & translationUnit, ostream & out ) {
599 list< Declaration * > decls;
600
601 if ( noprotop ) {
602 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
603 } else {
604 decls = translationUnit;
605 } // if
606
607 // depending on commandline options, either generate code or dump the AST
608 if ( codegenp ) {
609 CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
610 } else {
611 printAll( decls, out );
612 }
613 deleteAll( translationUnit );
614} // dump
615
616// Local Variables: //
617// tab-width: 4 //
618// mode: c++ //
619// compile-command: "make install" //
620// End: //
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