source: src/main.cc@ b1e63ac5

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 b1e63ac5 was ae47a23, checked in by Peter A. Buhr <pabuhr@…>, 8 years ago

use getopt_long for pretty print, and update error message
  • Property mode set to 100644
File size: 16.0 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 : Peter A. Buhr
13// Last Modified On : Thu Jun 29 12:46:50 2017
14// Update Count : 441
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
25using namespace std;
26
27#include "Parser/parser.hh"
28#include "Parser/TypedefTable.h"
29#include "GenPoly/Lvalue.h"
30#include "GenPoly/Specialize.h"
31#include "GenPoly/Box.h"
32#include "GenPoly/CopyParams.h"
33#include "GenPoly/InstantiateGeneric.h"
34#include "Concurrency/Keywords.h"
35#include "CodeGen/Generate.h"
36#include "CodeGen/FixNames.h"
37#include "CodeGen/FixMain.h"
38#include "CodeTools/DeclStats.h"
39#include "CodeTools/TrackLoc.h"
40#include "ControlStruct/Mutate.h"
41#include "SymTab/Validate.h"
42#include "ResolvExpr/AlternativePrinter.h"
43#include "ResolvExpr/Resolver.h"
44#include "MakeLibCfa.h"
45#include "InitTweak/GenInit.h"
46#include "InitTweak/FixInit.h"
47#include "Common/UnimplementedError.h"
48#include "../config.h"
49#include "Tuples/Tuples.h"
50
51using namespace std;
52
53#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
54
55
56LinkageSpec::Spec linkage = LinkageSpec::Cforall;
57TypedefTable typedefTable;
58DeclarationNode * parseTree = nullptr; // program parse tree
59
60extern int yydebug; // set for -g flag (Grammar)
61bool
62 astp = false,
63 bresolvep = false,
64 bboxp = false,
65 bcodegenp = 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
85static void parse_cmdline( int argc, char *argv[], const char *& filename );
86static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
87static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
88
89static 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
139void 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
147void sigAbortHandler( __attribute__((unused)) 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
154int 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
188 // Read to gcc builtins, if not generating the cfa library
189 FILE * gcc_builtins = fopen( libcfap | treep ? "../prelude/gcc-builtins.cf" : CFA_LIBDIR "/gcc-builtins.cf", "r" );
190 assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
191 parse( gcc_builtins, LinkageSpec::Compiler );
192
193 // read the extra prelude in, if not generating the cfa library
194 FILE * extras = fopen( libcfap | treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
195 assertf( extras, "cannot open extras.cf\n" );
196 parse( extras, LinkageSpec::C );
197
198 if ( ! libcfap ) {
199 // read the prelude in, if not generating the cfa library
200 FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
201 assertf( prelude, "cannot open prelude.cf\n" );
202 parse( prelude, LinkageSpec::Intrinsic );
203
204 // Read to cfa builtins, if not generating the cfa library
205 FILE * builtins = fopen( libcfap | treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
206 assertf( builtins, "cannot open builtins.cf\n" );
207 parse( builtins, LinkageSpec::Builtin );
208 } // if
209 } // if
210
211 parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
212
213 if ( parsep ) {
214 parseTree->printList( cout );
215 delete parseTree;
216 return 0;
217 } // if
218
219 buildList( parseTree, translationUnit );
220 delete parseTree;
221 parseTree = nullptr;
222
223 if ( astp ) {
224 dump( translationUnit );
225 return 0;
226 } // if
227
228 // OPTPRINT( "Concurrency" )
229 // Concurrency::applyKeywords( translationUnit );
230
231 // add the assignment statement after the initialization of a type parameter
232 OPTPRINT( "validate" )
233 SymTab::validate( translationUnit, symtabp );
234 if ( symtabp ) {
235 deleteAll( translationUnit );
236 return 0;
237 } // if
238
239 if ( expraltp ) {
240 ResolvExpr::AlternativePrinter printer( cout );
241 acceptAll( translationUnit, printer );
242 return 0;
243 } // if
244
245 if ( validp ) {
246 dump( translationUnit );
247 return 0;
248 } // if
249
250 OPTPRINT( "mutate" )
251 ControlStruct::mutate( translationUnit );
252 OPTPRINT( "fixNames" )
253 CodeGen::fixNames( translationUnit );
254 OPTPRINT( "genInit" )
255 InitTweak::genInit( translationUnit );
256 OPTPRINT( "expandMemberTuples" );
257 Tuples::expandMemberTuples( translationUnit );
258 if ( libcfap ) {
259 // generate the bodies of cfa library functions
260 LibCfa::makeLibCfa( translationUnit );
261 } // if
262
263 if ( declstatsp ) {
264 CodeTools::printDeclStats( translationUnit );
265 deleteAll( translationUnit );
266 return 0;
267 }
268
269 if ( bresolvep ) {
270 dump( translationUnit );
271 return 0;
272 } // if
273
274 OPTPRINT( "resolve" )
275 ResolvExpr::resolve( translationUnit );
276 if ( exprp ) {
277 dump( translationUnit );
278 return 0;
279 } // if
280
281 // fix ObjectDecl - replaces ConstructorInit nodes
282 OPTPRINT( "fixInit" )
283 InitTweak::fix( translationUnit, filename, libcfap || treep );
284 if ( ctorinitp ) {
285 dump ( translationUnit );
286 return 0;
287 } // if
288
289 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
290 Tuples::expandUniqueExpr( translationUnit );
291
292 OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
293 GenPoly::convertSpecializations( translationUnit );
294
295 OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
296 Tuples::expandTuples( translationUnit );
297 if ( tuplep ) {
298 dump( translationUnit );
299 return 0;
300 }
301
302 OPTPRINT("instantiateGenerics")
303 GenPoly::instantiateGeneric( translationUnit );
304 OPTPRINT( "copyParams" );
305 GenPoly::copyParams( translationUnit );
306 OPTPRINT( "convertLvalue" )
307 GenPoly::convertLvalue( translationUnit );
308
309 if ( bboxp ) {
310 dump( translationUnit );
311 return 0;
312 } // if
313 OPTPRINT( "box" )
314 GenPoly::box( translationUnit );
315
316 if ( bcodegenp ) {
317 dump( translationUnit );
318 return 0;
319 }
320
321 if ( optind < argc ) { // any commands after the flags and input file ? => output file name
322 output = new ofstream( argv[ optind ] );
323 } // if
324
325 CodeTools::fillLocations( translationUnit );
326 CodeGen::generate( translationUnit, *output, ! noprotop, prettycodegenp, true, ! nolinemarks );
327
328 CodeGen::FixMain::fix( *output, treep ? "../prelude/bootloader.c" : CFA_LIBDIR "/bootloader.c" );
329
330 if ( output != &cout ) {
331 delete output;
332 } // if
333 } catch ( SemanticError &e ) {
334 if ( errorp ) {
335 cerr << "---AST at error:---" << endl;
336 dump( translationUnit, cerr );
337 cerr << endl << "---End of AST, begin error message:---\n" << endl;
338 } // if
339 e.print( cerr );
340 if ( output != &cout ) {
341 delete output;
342 } // if
343 return 1;
344 } catch ( UnimplementedError &e ) {
345 cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
346 if ( output != &cout ) {
347 delete output;
348 } // if
349 return 1;
350 } catch ( CompilerError &e ) {
351 cerr << "Compiler Error: " << e.get_what() << endl;
352 cerr << "(please report bugs to [REDACTED])" << endl;
353 if ( output != &cout ) {
354 delete output;
355 } // if
356 return 1;
357 } // try
358
359 deleteAll( translationUnit );
360 return 0;
361} // main
362
363void parse_cmdline( int argc, char * argv[], const char *& filename ) {
364 enum { Ast, Bbox, Bresolver, CtorInitFix, DeclStats, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
365
366 static struct option long_opts[] = {
367 { "ast", no_argument, 0, Ast },
368 { "before-box", no_argument, 0, Bbox },
369 { "before-resolver", no_argument, 0, Bresolver },
370 { "ctorinitfix", no_argument, 0, CtorInitFix },
371 { "decl-stats", no_argument, 0, DeclStats },
372 { "expr", no_argument, 0, Expr },
373 { "expralt", no_argument, 0, ExprAlt },
374 { "grammar", no_argument, 0, Grammar },
375 { "libcfa", no_argument, 0, LibCFA },
376 { "no-preamble", no_argument, 0, Nopreamble },
377 { "parse", no_argument, 0, Parse },
378 { "no-prototypes", no_argument, 0, Prototypes },
379 { "resolver", no_argument, 0, Resolver },
380 { "symbol", no_argument, 0, Symbol },
381 { "tree", no_argument, 0, Tree },
382 { "tuple-expansion", no_argument, 0, TupleExpansion },
383 { "validate", no_argument, 0, Validate },
384 { 0, 0, 0, 0 }
385 }; // long_opts
386 int long_index;
387
388 opterr = 0; // (global) prevent getopt from printing error messages
389
390 int c;
391 while ( (c = getopt_long( argc, argv, "abBcCdefglLmnpqrstTvyzZD:F:", long_opts, &long_index )) != -1 ) {
392 switch ( c ) {
393 case Ast:
394 case 'a': // dump AST
395 astp = true;
396 break;
397 case Bresolver:
398 case 'b': // print before resolver steps
399 bresolvep = true;
400 break;
401 case 'B': // print before box steps
402 bboxp = true;
403 break;
404 case CtorInitFix:
405 case 'c': // print after constructors and destructors are replaced
406 ctorinitp = true;
407 break;
408 case 'C': // print before code generation
409 bcodegenp = true;
410 break;
411 case DeclStats:
412 case 'd':
413 declstatsp = true;
414 break;
415 case Expr:
416 case 'e': // dump AST after expression analysis
417 exprp = true;
418 break;
419 case ExprAlt:
420 case 'f': // print alternatives for expressions
421 expraltp = true;
422 break;
423 case Grammar:
424 case 'g': // bison debugging info (grammar rules)
425 yydebug = true;
426 break;
427 case LibCFA:
428 case 'l': // generate libcfa.c
429 libcfap = true;
430 break;
431 case 'L': // surpress lines marks
432 nolinemarks = true;
433 break;
434 case Nopreamble:
435 case 'n': // do not read preamble
436 nopreludep = true;
437 break;
438 case Prototypes:
439 case 'p': // generate prototypes for preamble functions
440 noprotop = true;
441 break;
442 case 'm': // don't replace the main
443 nomainp = true;
444 break;
445 case Parse:
446 case 'q': // dump parse tree
447 parsep = true;
448 break;
449 case Resolver:
450 case 'r': // print resolver steps
451 resolvep = true;
452 break;
453 case Symbol:
454 case 's': // print symbol table events
455 symtabp = true;
456 break;
457 case Tree:
458 case 't': // build in tree
459 treep = true;
460 break;
461 case TupleExpansion:
462 case 'T': // print after tuple expansion
463 tuplep = true;
464 break;
465 case 'v': // dump AST after decl validation pass
466 validp = true;
467 break;
468 case 'y': // dump AST on error
469 errorp = true;
470 break;
471 case 'z': // dump as codegen rather than AST
472 codegenp = true;
473 break;
474 case 'Z': // prettyprint during codegen (i.e. print unmangled names, etc.)
475 prettycodegenp = true;
476 break;
477 case 'D': // ignore -Dxxx
478 break;
479 case 'F': // source file-name without suffix
480 filename = optarg;
481 break;
482 case '?':
483 if ( optopt ) { // short option ?
484 assertf( false, "Unknown option: -%c\n", (char)optopt );
485 } else {
486 assertf( false, "Unknown option: %s\n", argv[optind - 1] );
487 } // if
488 default:
489 abort();
490 } // switch
491 } // while
492} // parse_cmdline
493
494static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
495 extern int yyparse( void );
496 extern FILE * yyin;
497 extern int yylineno;
498
499 ::linkage = linkage; // set globals
500 yyin = input;
501 yylineno = 1;
502 typedefTable.enterScope();
503 int parseStatus = yyparse();
504
505 fclose( input );
506 if ( shouldExit || parseStatus != 0 ) {
507 exit( parseStatus );
508 } // if
509} // parse
510
511static bool notPrelude( Declaration * decl ) {
512 return ! LinkageSpec::isBuiltin( decl->get_linkage() );
513} // notPrelude
514
515static void dump( list< Declaration * > & translationUnit, ostream & out ) {
516 list< Declaration * > decls;
517
518 if ( noprotop ) {
519 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
520 } else {
521 decls = translationUnit;
522 } // if
523
524 // depending on commandline options, either generate code or dump the AST
525 if ( codegenp ) {
526 CodeGen::generate( decls, out, ! noprotop, prettycodegenp );
527 } else {
528 printAll( decls, out );
529 }
530 deleteAll( translationUnit );
531} // dump
532
533// Local Variables: //
534// tab-width: 4 //
535// mode: c++ //
536// compile-command: "make install" //
537// End: //
Note: See TracBrowser for help on using the repository browser.