source: src/main.cc@ d335627

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 d335627 was bf2438c, checked in by Thierry Delisle <tdelisle@…>, 8 years ago

Cleaned-up some headers using a tool called 'include-what-you-use'
  • Property mode set to 100644
File size: 17.8 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 : Fri Jul 7 11:13:00 2017
14// Update Count : 442
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
61using namespace std;
62
63#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
64
65
66LinkageSpec::Spec linkage = LinkageSpec::Cforall;
67TypedefTable typedefTable;
68DeclarationNode * parseTree = nullptr; // program parse tree
69
70extern int yydebug; // set for -g flag (Grammar)
71bool
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
95static void parse_cmdline( int argc, char *argv[], const char *& filename );
96static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
97static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
98
99static 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
149void 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
157void 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
164int 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("instantiateGenerics")
316 GenPoly::instantiateGeneric( translationUnit );
317 OPTPRINT( "copyParams" );
318 GenPoly::copyParams( translationUnit );
319 OPTPRINT( "convertLvalue" )
320 GenPoly::convertLvalue( translationUnit );
321
322 if ( bboxp ) {
323 dump( translationUnit );
324 return 0;
325 } // if
326 OPTPRINT( "box" )
327 GenPoly::box( translationUnit );
328
329 if ( bcodegenp ) {
330 dump( translationUnit );
331 return 0;
332 }
333
334 if ( optind < argc ) { // any commands after the flags and input file ? => output file name
335 output = new ofstream( argv[ optind ] );
336 } // if
337
338 CodeTools::fillLocations( translationUnit );
339 CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, ! nolinemarks );
340
341 CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
342
343 if ( output != &cout ) {
344 delete output;
345 } // if
346 } catch ( SemanticError &e ) {
347 if ( errorp ) {
348 cerr << "---AST at error:---" << endl;
349 dump( translationUnit, cerr );
350 cerr << endl << "---End of AST, begin error message:---\n" << endl;
351 } // if
352 e.print( cerr );
353 if ( output != &cout ) {
354 delete output;
355 } // if
356 return 1;
357 } catch ( UnimplementedError &e ) {
358 cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
359 if ( output != &cout ) {
360 delete output;
361 } // if
362 return 1;
363 } catch ( CompilerError &e ) {
364 cerr << "Compiler Error: " << e.get_what() << endl;
365 cerr << "(please report bugs to [REDACTED])" << endl;
366 if ( output != &cout ) {
367 delete output;
368 } // if
369 return 1;
370 } // try
371
372 deleteAll( translationUnit );
373 return 0;
374} // main
375
376void parse_cmdline( int argc, char * argv[], const char *& filename ) {
377 enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
378
379 static struct option long_opts[] = {
380 { "ast", no_argument, 0, Ast },
381 { "before-box", no_argument, 0, Bbox },
382 { "before-resolver", no_argument, 0, Bresolver },
383 { "ctorinitfix", no_argument, 0, CtorInitFix },
384 { "decl-stats", no_argument, 0, DeclStats },
385 { "expr", no_argument, 0, Expr },
386 { "expralt", no_argument, 0, ExprAlt },
387 { "grammar", no_argument, 0, Grammar },
388 { "libcfa", no_argument, 0, LibCFA },
389 { "no-preamble", no_argument, 0, Nopreamble },
390 { "parse", no_argument, 0, Parse },
391 { "no-prototypes", no_argument, 0, Prototypes },
392 { "resolver", no_argument, 0, Resolver },
393 { "symbol", no_argument, 0, Symbol },
394 { "tree", no_argument, 0, Tree },
395 { "tuple-expansion", no_argument, 0, TupleExpansion },
396 { "validate", no_argument, 0, Validate },
397 { 0, 0, 0, 0 }
398 }; // long_opts
399 int long_index;
400
401 opterr = 0; // (global) prevent getopt from printing error messages
402
403 int c;
404 while ( (c = getopt_long( argc, argv, "abBcCdefglLmnpqrstTvyzZD:F:", long_opts, &long_index )) != -1 ) {
405 switch ( c ) {
406 case Ast:
407 case 'a': // dump AST
408 astp = true;
409 break;
410 case Bresolver:
411 case 'b': // print before resolver steps
412 bresolvep = true;
413 break;
414 case 'B': // print before box steps
415 bboxp = true;
416 break;
417 case CtorInitFix:
418 case 'c': // print after constructors and destructors are replaced
419 ctorinitp = true;
420 break;
421 case 'C': // print before code generation
422 bcodegenp = true;
423 break;
424 case DeclStats:
425 case 'd':
426 declstatsp = true;
427 break;
428 case Expr:
429 case 'e': // dump AST after expression analysis
430 exprp = true;
431 break;
432 case ExprAlt:
433 case 'f': // print alternatives for expressions
434 expraltp = true;
435 break;
436 case Grammar:
437 case 'g': // bison debugging info (grammar rules)
438 yydebug = true;
439 break;
440 case LibCFA:
441 case 'l': // generate libcfa.c
442 libcfap = true;
443 break;
444 case 'L': // surpress lines marks
445 nolinemarks = true;
446 break;
447 case Nopreamble:
448 case 'n': // do not read preamble
449 nopreludep = true;
450 break;
451 case Prototypes:
452 case 'p': // generate prototypes for preamble functions
453 noprotop = true;
454 break;
455 case 'm': // don't replace the main
456 nomainp = true;
457 break;
458 case Parse:
459 case 'q': // dump parse tree
460 parsep = true;
461 break;
462 case Resolver:
463 case 'r': // print resolver steps
464 resolvep = true;
465 break;
466 case Symbol:
467 case 's': // print symbol table events
468 symtabp = true;
469 break;
470 case Tree:
471 case 't': // build in tree
472 treep = true;
473 break;
474 case TupleExpansion:
475 case 'T': // print after tuple expansion
476 tuplep = true;
477 break;
478 case 'v': // dump AST after decl validation pass
479 validp = true;
480 break;
481 case 'y': // dump AST on error
482 errorp = true;
483 break;
484 case 'z': // dump as codegen rather than AST
485 codegenp = true;
486 break;
487 case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
488 prettycodegenp = true;
489 break;
490 case 'D': // ignore -Dxxx
491 break;
492 case 'F': // source file-name without suffix
493 filename = optarg;
494 break;
495 case '?':
496 if ( optopt ) { // short option ?
497 assertf( false, "Unknown option: -%c\n", (char)optopt );
498 } else {
499 assertf( false, "Unknown option: %s\n", argv[optind - 1] );
500 } // if
501 default:
502 abort();
503 } // switch
504 } // while
505} // parse_cmdline
506
507static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
508 extern int yyparse( void );
509 extern FILE * yyin;
510 extern int yylineno;
511
512 ::linkage = linkage; // set globals
513 yyin = input;
514 yylineno = 1;
515 typedefTable.enterScope();
516 int parseStatus = yyparse();
517
518 fclose( input );
519 if ( shouldExit || parseStatus != 0 ) {
520 exit( parseStatus );
521 } // if
522} // parse
523
524static bool notPrelude( Declaration * decl ) {
525 return ! LinkageSpec::isBuiltin( decl->get_linkage() );
526} // notPrelude
527
528static void dump( list< Declaration * > & translationUnit, ostream & out ) {
529 list< Declaration * > decls;
530
531 if ( noprotop ) {
532 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
533 } else {
534 decls = translationUnit;
535 } // if
536
537 // depending on commandline options, either generate code or dump the AST
538 if ( codegenp ) {
539 CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
540 } else {
541 printAll( decls, out );
542 }
543 deleteAll( translationUnit );
544} // dump
545
546// Local Variables: //
547// tab-width: 4 //
548// mode: c++ //
549// compile-command: "make install" //
550// End: //
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