source: src/main.cc@ 5fb6830

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 resolv-new with_gc
Last change on this file since 5fb6830 was a5f0529, checked in by Andrew Beach <ajbeach@…>, 8 years ago

Virtual casts have been added. They still require a lot of hand coded support to work but for simple cases it should be enough.
  • Property mode set to 100644
File size: 18.0 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 Jul 26 14:38:00 2017
14// Update Count : 443
15//
16
17#include <cassert> // for assertf
18#include <cxxabi.h> // for __cxa_demangle
19#include <execinfo.h> // for backtrace, backtrace_symbols
20#include <getopt.h> // for no_argument, optind, geto...
21#include <signal.h> // for signal, SIGABRT, SIGSEGV
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 operator<<, allocator
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 "ControlStruct/ExceptTranslate.h" // for translateEHM
42#include "ControlStruct/Mutate.h" // for mutate
43#include "GenPoly/Box.h" // for box
44#include "GenPoly/CopyParams.h" // for copyParams
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 libcfap = false,
82 nopreludep = false,
83 noprotop = false,
84 nomainp = false,
85 parsep = false,
86 resolvep = false, // used in AlternativeFinder
87 symtabp = false,
88 treep = false,
89 tuplep = false,
90 validp = false,
91 errorp = false,
92 codegenp = false,
93 prettycodegenp = false,
94 nolinemarks = false;
95
96static void parse_cmdline( int argc, char *argv[], const char *& filename );
97static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
98static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
99
100static void backtrace( int start ) { // skip first N stack frames
101 enum { Frames = 50 };
102 void * array[Frames];
103 int size = ::backtrace( array, Frames );
104 char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
105
106 *index( messages[0], '(' ) = '\0'; // find executable name
107 cerr << "Stack back trace for: " << messages[0] << endl;
108
109 // skip last 2 stack frames after main
110 for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
111 char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
112 for ( char *p = messages[i]; *p; ++p ) { // find parantheses and +offset
113 if ( *p == '(' ) {
114 mangled_name = p;
115 } else if ( *p == '+' ) {
116 offset_begin = p;
117 } else if ( *p == ')' ) {
118 offset_end = p;
119 break;
120 } // if
121 } // for
122
123 // if line contains symbol, attempt to demangle
124 int frameNo = i - start;
125 if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
126 *mangled_name++ = '\0'; // delimit strings
127 *offset_begin++ = '\0';
128 *offset_end++ = '\0';
129
130 int status;
131 char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
132 // bug in __cxa_demangle for single-character lower-case non-mangled names
133 if ( status == 0 ) { // demangling successful ?
134 cerr << "(" << frameNo << ") " << messages[i] << " : "
135 << real_name << "+" << offset_begin << offset_end << endl;
136 } else { // otherwise, output mangled name
137 cerr << "(" << frameNo << ") " << messages[i] << " : "
138 << mangled_name << "(/*unknown*/)+" << offset_begin << offset_end << endl;
139 } // if
140
141 free( real_name );
142 } else { // otherwise, print the whole line
143 cerr << "(" << frameNo << ") " << messages[i] << endl;
144 } // if
145 } // for
146
147 free( messages );
148} // backtrace
149
150void sigSegvBusHandler( int sig_num ) {
151 cerr << "*CFA runtime error* program cfa-cpp terminated with "
152 << (sig_num == SIGSEGV ? "segment fault" : "bus error")
153 << "." << endl;
154 backtrace( 2 ); // skip first 2 stack frames
155 exit( EXIT_FAILURE );
156} // sigSegvBusHandler
157
158void sigAbortHandler( __attribute__((unused)) int sig_num ) {
159 backtrace( 6 ); // skip first 6 stack frames
160 signal( SIGABRT, SIG_DFL); // reset default signal handler
161 raise( SIGABRT ); // reraise SIGABRT
162} // sigAbortHandler
163
164
165int main( int argc, char * argv[] ) {
166 FILE * input; // use FILE rather than istream because yyin is FILE
167 ostream *output = & cout;
168 const char *filename = nullptr;
169 list< Declaration * > translationUnit;
170
171 signal( SIGSEGV, sigSegvBusHandler );
172 signal( SIGBUS, sigSegvBusHandler );
173 signal( SIGABRT, sigAbortHandler );
174
175 parse_cmdline( argc, argv, filename ); // process command-line arguments
176 CodeGen::FixMain::setReplaceMain( !nomainp );
177
178 try {
179 // choose to read the program from a file or stdin
180 if ( optind < argc ) { // any commands after the flags ? => input file name
181 input = fopen( argv[ optind ], "r" );
182 assertf( input, "cannot open %s\n", argv[ optind ] );
183 // if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
184 if ( filename == nullptr ) filename = argv[ optind ];
185 // prelude filename comes in differently
186 if ( libcfap ) filename = "prelude.cf";
187 optind += 1;
188 } else { // no input file name
189 input = stdin;
190 // if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
191 // a fake name along
192 if ( filename == nullptr ) filename = "stdin";
193 } // if
194
195 // read in the builtins, extras, and the prelude
196 if ( ! nopreludep ) { // include gcc builtins
197 // -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
198
199 // Read to gcc builtins, if not generating the cfa library
200 FILE * gcc_builtins = fopen( libcfap | treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
201 assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
202 parse( gcc_builtins, LinkageSpec::Compiler );
203
204 // read the extra prelude in, if not generating the cfa library
205 FILE * extras = fopen( libcfap | treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
206 assertf( extras, "cannot open extras.cf\n" );
207 parse( extras, LinkageSpec::C );
208
209 if ( ! libcfap ) {
210 // read the prelude in, if not generating the cfa library
211 FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
212 assertf( prelude, "cannot open prelude.cf\n" );
213 parse( prelude, LinkageSpec::Intrinsic );
214
215 // Read to cfa builtins, if not generating the cfa library
216 FILE * builtins = fopen( libcfap | treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
217 assertf( builtins, "cannot open builtins.cf\n" );
218 parse( builtins, LinkageSpec::BuiltinCFA );
219 } // if
220 } // if
221
222 parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
223
224 if ( parsep ) {
225 parseTree->printList( cout );
226 delete parseTree;
227 return 0;
228 } // if
229
230 buildList( parseTree, translationUnit );
231 delete parseTree;
232 parseTree = nullptr;
233
234 if ( astp ) {
235 dump( translationUnit );
236 return 0;
237 } // if
238
239 // OPTPRINT( "Concurrency" )
240 // Concurrency::applyKeywords( translationUnit );
241
242 // add the assignment statement after the initialization of a type parameter
243 OPTPRINT( "validate" )
244 SymTab::validate( translationUnit, symtabp );
245 if ( symtabp ) {
246 deleteAll( translationUnit );
247 return 0;
248 } // if
249
250 if ( expraltp ) {
251 ResolvExpr::AlternativePrinter printer( cout );
252 acceptAll( translationUnit, printer );
253 return 0;
254 } // if
255
256 if ( validp ) {
257 dump( translationUnit );
258 return 0;
259 } // if
260
261 OPTPRINT( "mutate" )
262 ControlStruct::mutate( translationUnit );
263 OPTPRINT( "fixNames" )
264 CodeGen::fixNames( translationUnit );
265 OPTPRINT( "genInit" )
266 InitTweak::genInit( translationUnit );
267 OPTPRINT( "expandMemberTuples" );
268 Tuples::expandMemberTuples( 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 deleteAll( translationUnit );
277 return 0;
278 }
279
280 if ( bresolvep ) {
281 dump( translationUnit );
282 return 0;
283 } // if
284
285 OPTPRINT( "resolve" )
286 ResolvExpr::resolve( translationUnit );
287 if ( exprp ) {
288 dump( translationUnit );
289 return 0;
290 } // if
291
292 // fix ObjectDecl - replaces ConstructorInit nodes
293 OPTPRINT( "fixInit" )
294 InitTweak::fix( translationUnit, filename, libcfap || treep );
295 if ( ctorinitp ) {
296 dump ( translationUnit );
297 return 0;
298 } // if
299
300 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
301 Tuples::expandUniqueExpr( translationUnit );
302
303 OPTPRINT( "translateEHM" );
304 ControlStruct::translateEHM( translationUnit );
305
306 OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
307 GenPoly::convertSpecializations( translationUnit );
308
309 OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
310 Tuples::expandTuples( translationUnit );
311 if ( tuplep ) {
312 dump( translationUnit );
313 return 0;
314 }
315
316 OPTPRINT( "virtual expandCasts" ) // Must come after translateEHM
317 Virtual::expandCasts( translationUnit );
318
319 OPTPRINT("instantiateGenerics")
320 GenPoly::instantiateGeneric( translationUnit );
321 OPTPRINT( "copyParams" );
322 GenPoly::copyParams( translationUnit );
323 OPTPRINT( "convertLvalue" )
324 GenPoly::convertLvalue( translationUnit );
325
326 if ( bboxp ) {
327 dump( translationUnit );
328 return 0;
329 } // if
330 OPTPRINT( "box" )
331 GenPoly::box( translationUnit );
332
333 if ( bcodegenp ) {
334 dump( translationUnit );
335 return 0;
336 }
337
338 if ( optind < argc ) { // any commands after the flags and input file ? => output file name
339 output = new ofstream( argv[ optind ] );
340 } // if
341
342 CodeTools::fillLocations( translationUnit );
343 CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, ! nolinemarks );
344
345 CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
346
347 if ( output != &cout ) {
348 delete output;
349 } // if
350 } catch ( SemanticError &e ) {
351 if ( errorp ) {
352 cerr << "---AST at error:---" << endl;
353 dump( translationUnit, cerr );
354 cerr << endl << "---End of AST, begin error message:---\n" << endl;
355 } // if
356 e.print( cerr );
357 if ( output != &cout ) {
358 delete output;
359 } // if
360 return 1;
361 } catch ( UnimplementedError &e ) {
362 cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
363 if ( output != &cout ) {
364 delete output;
365 } // if
366 return 1;
367 } catch ( CompilerError &e ) {
368 cerr << "Compiler Error: " << e.get_what() << endl;
369 cerr << "(please report bugs to [REDACTED])" << endl;
370 if ( output != &cout ) {
371 delete output;
372 } // if
373 return 1;
374 } // try
375
376 deleteAll( translationUnit );
377 return 0;
378} // main
379
380void parse_cmdline( int argc, char * argv[], const char *& filename ) {
381 enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
382
383 static struct option long_opts[] = {
384 { "ast", no_argument, 0, Ast },
385 { "before-box", no_argument, 0, Bbox },
386 { "before-resolver", no_argument, 0, Bresolver },
387 { "ctorinitfix", no_argument, 0, CtorInitFix },
388 { "decl-stats", no_argument, 0, DeclStats },
389 { "expr", no_argument, 0, Expr },
390 { "expralt", no_argument, 0, ExprAlt },
391 { "grammar", no_argument, 0, Grammar },
392 { "libcfa", no_argument, 0, LibCFA },
393 { "no-preamble", no_argument, 0, Nopreamble },
394 { "parse", no_argument, 0, Parse },
395 { "no-prototypes", no_argument, 0, Prototypes },
396 { "resolver", no_argument, 0, Resolver },
397 { "symbol", no_argument, 0, Symbol },
398 { "tree", no_argument, 0, Tree },
399 { "tuple-expansion", no_argument, 0, TupleExpansion },
400 { "validate", no_argument, 0, Validate },
401 { 0, 0, 0, 0 }
402 }; // long_opts
403 int long_index;
404
405 opterr = 0; // (global) prevent getopt from printing error messages
406
407 int c;
408 while ( (c = getopt_long( argc, argv, "abBcCdefglLmnpqrstTvyzZD:F:", long_opts, &long_index )) != -1 ) {
409 switch ( c ) {
410 case Ast:
411 case 'a': // dump AST
412 astp = true;
413 break;
414 case Bresolver:
415 case 'b': // print before resolver steps
416 bresolvep = true;
417 break;
418 case 'B': // print before box steps
419 bboxp = true;
420 break;
421 case CtorInitFix:
422 case 'c': // print after constructors and destructors are replaced
423 ctorinitp = true;
424 break;
425 case 'C': // print before code generation
426 bcodegenp = true;
427 break;
428 case DeclStats:
429 case 'd':
430 declstatsp = true;
431 break;
432 case Expr:
433 case 'e': // dump AST after expression analysis
434 exprp = true;
435 break;
436 case ExprAlt:
437 case 'f': // print alternatives for expressions
438 expraltp = true;
439 break;
440 case Grammar:
441 case 'g': // bison debugging info (grammar rules)
442 yydebug = true;
443 break;
444 case LibCFA:
445 case 'l': // generate libcfa.c
446 libcfap = true;
447 break;
448 case 'L': // surpress lines marks
449 nolinemarks = true;
450 break;
451 case Nopreamble:
452 case 'n': // do not read preamble
453 nopreludep = true;
454 break;
455 case Prototypes:
456 case 'p': // generate prototypes for preamble functions
457 noprotop = true;
458 break;
459 case 'm': // don't replace the main
460 nomainp = true;
461 break;
462 case Parse:
463 case 'q': // dump parse tree
464 parsep = true;
465 break;
466 case Resolver:
467 case 'r': // print resolver steps
468 resolvep = true;
469 break;
470 case Symbol:
471 case 's': // print symbol table events
472 symtabp = true;
473 break;
474 case Tree:
475 case 't': // build in tree
476 treep = true;
477 break;
478 case TupleExpansion:
479 case 'T': // print after tuple expansion
480 tuplep = true;
481 break;
482 case 'v': // dump AST after decl validation pass
483 validp = true;
484 break;
485 case 'y': // dump AST on error
486 errorp = true;
487 break;
488 case 'z': // dump as codegen rather than AST
489 codegenp = true;
490 break;
491 case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
492 prettycodegenp = true;
493 break;
494 case 'D': // ignore -Dxxx
495 break;
496 case 'F': // source file-name without suffix
497 filename = optarg;
498 break;
499 case '?':
500 if ( optopt ) { // short option ?
501 assertf( false, "Unknown option: -%c\n", (char)optopt );
502 } else {
503 assertf( false, "Unknown option: %s\n", argv[optind - 1] );
504 } // if
505 default:
506 abort();
507 } // switch
508 } // while
509} // parse_cmdline
510
511static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
512 extern int yyparse( void );
513 extern FILE * yyin;
514 extern int yylineno;
515
516 ::linkage = linkage; // set globals
517 yyin = input;
518 yylineno = 1;
519 typedefTable.enterScope();
520 int parseStatus = yyparse();
521
522 fclose( input );
523 if ( shouldExit || parseStatus != 0 ) {
524 exit( parseStatus );
525 } // if
526} // parse
527
528static bool notPrelude( Declaration * decl ) {
529 return ! LinkageSpec::isBuiltin( decl->get_linkage() );
530} // notPrelude
531
532static void dump( list< Declaration * > & translationUnit, ostream & out ) {
533 list< Declaration * > decls;
534
535 if ( noprotop ) {
536 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
537 } else {
538 decls = translationUnit;
539 } // if
540
541 // depending on commandline options, either generate code or dump the AST
542 if ( codegenp ) {
543 CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
544 } else {
545 printAll( decls, out );
546 }
547 deleteAll( translationUnit );
548} // dump
549
550// Local Variables: //
551// tab-width: 4 //
552// mode: c++ //
553// compile-command: "make install" //
554// End: //
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