source: src/main.cc@ 907eccb

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 907eccb was 626dbc10, checked in by Rob Schluntz <rschlunt@…>, 9 years ago

major refactoring of specialization code, added code to generate thunks for ttype functions, move specialize pass to before tuple expansion
  • Property mode set to 100644
File size: 14.1 KB
RevLine 
[b87a5ed]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//
[71f4e4f]7// main.cc --
[b87a5ed]8//
[843054c2]9// Author : Richard C. Bilson
[b87a5ed]10// Created On : Fri May 15 23:12:02 2015
[dd51906]11// Last Modified By : Peter A. Buhr
[375a068]12// Last Modified On : Wed Dec 14 14:35:54 2016
13// Update Count : 436
[b87a5ed]14//
15
[51b73452]16#include <iostream>
17#include <fstream>
[e6955b1]18#include <signal.h> // signal
19#include <getopt.h> // getopt
[0afffee]20#include <execinfo.h> // backtrace, backtrace_symbols
[e6955b1]21#include <cxxabi.h> // __cxa_demangle
[0afffee]22#include <cstring> // index
[e6955b1]23
24using namespace std;
25
[0da3e2c]26#include "Parser/lex.h"
27#include "Parser/parser.h"
28#include "Parser/TypedefTable.h"
[51b73452]29#include "GenPoly/Lvalue.h"
30#include "GenPoly/Specialize.h"
31#include "GenPoly/Box.h"
32#include "GenPoly/CopyParams.h"
[ea5daeb]33#include "GenPoly/InstantiateGeneric.h"
[51b73452]34#include "CodeGen/Generate.h"
35#include "CodeGen/FixNames.h"
36#include "ControlStruct/Mutate.h"
37#include "SymTab/Validate.h"
38#include "ResolvExpr/AlternativePrinter.h"
39#include "ResolvExpr/Resolver.h"
40#include "MakeLibCfa.h"
[a0fdbd5]41#include "InitTweak/GenInit.h"
[71f4e4f]42#include "InitTweak/FixInit.h"
[d3b7937]43#include "Common/UnimplementedError.h"
[51b73452]44#include "../config.h"
[6eb8948]45#include "Tuples/Tuples.h"
[51b73452]46
47using namespace std;
48
[e6955b1]49#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
[81419b5]50
[0da3e2c]51
[8b7ee09]52LinkageSpec::Spec linkage = LinkageSpec::Cforall;
[0da3e2c]53TypedefTable typedefTable;
[cbaee0d]54DeclarationNode * parseTree = nullptr; // program parse tree
[81419b5]55
[926af74]56extern int yydebug; // set for -g flag (Grammar)
[b87a5ed]57bool
58 astp = false,
[de62360d]59 bresolvep = false,
[fea7ca7]60 bboxp = false,
[ca1c11f]61 ctorinitp = false,
[b87a5ed]62 exprp = false,
63 expraltp = false,
64 libcfap = false,
[de62360d]65 nopreludep = false,
[1ab4ce2]66 noprotop = false,
[de62360d]67 parsep = false,
[b87a5ed]68 resolvep = false, // used in AlternativeFinder
69 symtabp = false,
[d3b7937]70 treep = false,
[626dbc10]71 tuplep = false,
[b87a5ed]72 validp = false,
[de62360d]73 errorp = false,
74 codegenp = false;
[b87a5ed]75
[926af74]76static void parse_cmdline( int argc, char *argv[], const char *& filename );
[8b7ee09]77static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
[e6955b1]78static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
79
[0afffee]80static void backtrace( int start ) { // skip first N stack frames
[e6955b1]81 enum { Frames = 50 };
82 void * array[Frames];
[0afffee]83 int size = ::backtrace( array, Frames );
84 char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
85
86 *index( messages[0], '(' ) = '\0'; // find executable name
87 cerr << "Stack back trace for: " << messages[0] << endl;
[e6955b1]88
[b542bfb]89 // skip last 2 stack frames after main
90 for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
[e6955b1]91 char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
92 for ( char *p = messages[i]; *p; ++p ) { // find parantheses and +offset
[0afffee]93 if ( *p == '(' ) {
[46f6134]94 mangled_name = p;
[0afffee]95 } else if ( *p == '+' ) {
[e6955b1]96 offset_begin = p;
[0afffee]97 } else if ( *p == ')' ) {
[e6955b1]98 offset_end = p;
99 break;
100 } // if
101 } // for
102
103 // if line contains symbol, attempt to demangle
[b542bfb]104 int frameNo = i - start;
[e6955b1]105 if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
[0afffee]106 *mangled_name++ = '\0'; // delimit strings
[e6955b1]107 *offset_begin++ = '\0';
108 *offset_end++ = '\0';
109
[0afffee]110 int status;
[e6955b1]111 char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
[0afffee]112 // bug in __cxa_demangle for single-character lower-case non-mangled names
[e6955b1]113 if ( status == 0 ) { // demangling successful ?
[b542bfb]114 cerr << "(" << frameNo << ") " << messages[i] << " : "
[e6955b1]115 << real_name << "+" << offset_begin << offset_end << endl;
116 } else { // otherwise, output mangled name
[b542bfb]117 cerr << "(" << frameNo << ") " << messages[i] << " : "
[0afffee]118 << mangled_name << "(/*unknown*/)+" << offset_begin << offset_end << endl;
[e6955b1]119 } // if
[0afffee]120
[e6955b1]121 free( real_name );
122 } else { // otherwise, print the whole line
[b542bfb]123 cerr << "(" << frameNo << ") " << messages[i] << endl;
[e6955b1]124 } // if
125 } // for
[b542bfb]126
[e6955b1]127 free( messages );
[b542bfb]128} // backtrace
129
130void sigSegvBusHandler( int sig_num ) {
131 cerr << "*CFA runtime error* program cfa-cpp terminated with "
132 << (sig_num == SIGSEGV ? "segment fault" : "bus error")
[0afffee]133 << "." << endl;
[b542bfb]134 backtrace( 2 ); // skip first 2 stack frames
[e6955b1]135 exit( EXIT_FAILURE );
136} // sigSegvBusHandler
[0da3e2c]137
[b542bfb]138void sigAbortHandler( int sig_num ) {
139 backtrace( 6 ); // skip first 6 stack frames
140 signal( SIGABRT, SIG_DFL); // reset default signal handler
141 raise( SIGABRT ); // reraise SIGABRT
142} // sigAbortHandler
143
144
[cbaee0d]145int main( int argc, char * argv[] ) {
[3b8e52c]146 FILE * input; // use FILE rather than istream because yyin is FILE
[e6955b1]147 ostream *output = & cout;
[926af74]148 const char *filename = nullptr;
[e6955b1]149 list< Declaration * > translationUnit;
150
151 signal( SIGSEGV, sigSegvBusHandler );
152 signal( SIGBUS, sigSegvBusHandler );
[b542bfb]153 signal( SIGABRT, sigAbortHandler );
[b87a5ed]154
[0da3e2c]155 parse_cmdline( argc, argv, filename ); // process command-line arguments
[b87a5ed]156
157 try {
[81419b5]158 // choose to read the program from a file or stdin
[3b8e52c]159 if ( optind < argc ) { // any commands after the flags ? => input file name
[b87a5ed]160 input = fopen( argv[ optind ], "r" );
[3b8e52c]161 assertf( input, "cannot open %s\n", argv[ optind ] );
[d029162e]162 // if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
[926af74]163 if ( filename == nullptr ) filename = argv[ optind ];
[37024fd]164 // prelude filename comes in differently
165 if ( libcfap ) filename = "prelude.cf";
[b87a5ed]166 optind += 1;
[3b8e52c]167 } else { // no input file name
[b87a5ed]168 input = stdin;
[2a7e29b]169 // if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
170 // a fake name along
[926af74]171 if ( filename == nullptr ) filename = "stdin";
[b87a5ed]172 } // if
173
[3b8e52c]174 if ( optind < argc ) { // any commands after the flags and input file ? => output file name
[b87a5ed]175 output = new ofstream( argv[ optind ] );
176 } // if
[71f4e4f]177
[159c62e]178 // read in the builtins, extras, and the prelude
[de62360d]179 if ( ! nopreludep ) { // include gcc builtins
[faf8857]180 // -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
[375a068]181 FILE * builtins = fopen( libcfap | treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
[3b8e52c]182 assertf( builtins, "cannot open builtins.cf\n" );
[81419b5]183 parse( builtins, LinkageSpec::Compiler );
184
[159c62e]185 // read the extra prelude in, if not generating the cfa library
[375a068]186 FILE * extras = fopen( libcfap | treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
[3b8e52c]187 assertf( extras, "cannot open extras.cf\n" );
[159c62e]188 parse( extras, LinkageSpec::C );
189
[81419b5]190 if ( ! libcfap ) {
[faf8857]191 // read the prelude in, if not generating the cfa library
[375a068]192 FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
[3b8e52c]193 assertf( prelude, "cannot open prelude.cf\n" );
[35304009]194 parse( prelude, LinkageSpec::Intrinsic );
[b87a5ed]195 } // if
196 } // if
[81419b5]197
[926af74]198 parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
[71f4e4f]199
[b87a5ed]200 if ( parsep ) {
[e6955b1]201 parseTree->printList( cout );
[0da3e2c]202 delete parseTree;
[b87a5ed]203 return 0;
204 } // if
205
[0da3e2c]206 buildList( parseTree, translationUnit );
207 delete parseTree;
[cbaee0d]208 parseTree = nullptr;
[b87a5ed]209
210 if ( astp ) {
[1ab4ce2]211 dump( translationUnit );
[b87a5ed]212 return 0;
213 } // if
214
[839ccbb]215 // add the assignment statement after the initialization of a type parameter
[81419b5]216 OPTPRINT( "validate" )
217 SymTab::validate( translationUnit, symtabp );
218 if ( symtabp ) {
[46f6134]219 deleteAll( translationUnit );
[b87a5ed]220 return 0;
221 } // if
222
[81419b5]223 if ( expraltp ) {
[e6955b1]224 ResolvExpr::AlternativePrinter printer( cout );
[81419b5]225 acceptAll( translationUnit, printer );
[b87a5ed]226 return 0;
227 } // if
228
229 if ( validp ) {
[1ab4ce2]230 dump( translationUnit );
[b87a5ed]231 return 0;
232 } // if
233
[81419b5]234 OPTPRINT( "mutate" )
235 ControlStruct::mutate( translationUnit );
[71f4e4f]236 OPTPRINT( "fixNames" )
[81419b5]237 CodeGen::fixNames( translationUnit );
[f1e012b]238 OPTPRINT( "tweakInit" )
[a0fdbd5]239 InitTweak::genInit( translationUnit );
[bf32bb8]240 OPTPRINT( "expandMemberTuples" );
241 Tuples::expandMemberTuples( translationUnit );
[81419b5]242 if ( libcfap ) {
243 // generate the bodies of cfa library functions
244 LibCfa::makeLibCfa( translationUnit );
[b87a5ed]245 } // if
246
[de62360d]247 if ( bresolvep ) {
[1ab4ce2]248 dump( translationUnit );
[de62360d]249 return 0;
250 } // if
251
[81419b5]252 OPTPRINT( "resolve" )
[b87a5ed]253 ResolvExpr::resolve( translationUnit );
[81419b5]254 if ( exprp ) {
[1ab4ce2]255 dump( translationUnit );
[ca1c11f]256 return 0;
[926af74]257 } // if
[81419b5]258
[71f4e4f]259 // fix ObjectDecl - replaces ConstructorInit nodes
[6cf27a07]260 OPTPRINT( "fixInit" )
261 InitTweak::fix( translationUnit, filename, libcfap || treep );
[ca1c11f]262 if ( ctorinitp ) {
263 dump ( translationUnit );
264 return 0;
[926af74]265 } // if
[71f4e4f]266
[141b786]267 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
268 Tuples::expandUniqueExpr( translationUnit );
[626dbc10]269
270 OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded
271 GenPoly::convertSpecializations( translationUnit );
272
[d9fa60a]273 OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
274 Tuples::expandTuples( translationUnit );
[626dbc10]275 if ( tuplep ) {
276 dump( translationUnit );
277 return 0;
278 }
[141b786]279
[ea5daeb]280 OPTPRINT("instantiateGenerics")
281 GenPoly::instantiateGeneric( translationUnit );
[81419b5]282 OPTPRINT( "copyParams" );
[b87a5ed]283 GenPoly::copyParams( translationUnit );
[81419b5]284 OPTPRINT( "convertLvalue" )
[b87a5ed]285 GenPoly::convertLvalue( translationUnit );
[fea7ca7]286
287 if ( bboxp ) {
288 dump( translationUnit );
289 return 0;
[926af74]290 } // if
[81419b5]291 OPTPRINT( "box" )
[b87a5ed]292 GenPoly::box( translationUnit );
[81419b5]293
[2871210]294 // print tree right before code generation
[81419b5]295 if ( codegenp ) {
[1ab4ce2]296 dump( translationUnit );
[81419b5]297 return 0;
298 } // if
[b87a5ed]299
[1ab4ce2]300 CodeGen::generate( translationUnit, *output, ! noprotop );
[b87a5ed]301
[e6955b1]302 if ( output != &cout ) {
[b87a5ed]303 delete output;
304 } // if
305 } catch ( SemanticError &e ) {
306 if ( errorp ) {
[e6955b1]307 cerr << "---AST at error:---" << endl;
308 dump( translationUnit, cerr );
309 cerr << endl << "---End of AST, begin error message:---\n" << endl;
[926af74]310 } // if
[e6955b1]311 e.print( cerr );
312 if ( output != &cout ) {
[b87a5ed]313 delete output;
314 } // if
315 return 1;
316 } catch ( UnimplementedError &e ) {
[e6955b1]317 cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
318 if ( output != &cout ) {
[b87a5ed]319 delete output;
320 } // if
321 return 1;
322 } catch ( CompilerError &e ) {
[e6955b1]323 cerr << "Compiler Error: " << e.get_what() << endl;
324 cerr << "(please report bugs to " << endl;
325 if ( output != &cout ) {
[b87a5ed]326 delete output;
327 } // if
328 return 1;
329 } // try
330
[39786813]331 deleteAll( translationUnit );
[b87a5ed]332 return 0;
[d9a0e76]333} // main
[51b73452]334
[cbaee0d]335void parse_cmdline( int argc, char * argv[], const char *& filename ) {
[626dbc10]336 enum { Ast, Bbox, Bresolver, CtorInitFix, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, };
[0da3e2c]337
338 static struct option long_opts[] = {
339 { "ast", no_argument, 0, Ast },
340 { "before-box", no_argument, 0, Bbox },
341 { "before-resolver", no_argument, 0, Bresolver },
342 { "ctorinitfix", no_argument, 0, CtorInitFix },
343 { "expr", no_argument, 0, Expr },
344 { "expralt", no_argument, 0, ExprAlt },
345 { "grammar", no_argument, 0, Grammar },
346 { "libcfa", no_argument, 0, LibCFA },
347 { "no-preamble", no_argument, 0, Nopreamble },
348 { "parse", no_argument, 0, Parse },
349 { "no-prototypes", no_argument, 0, Prototypes },
350 { "resolver", no_argument, 0, Resolver },
351 { "symbol", no_argument, 0, Symbol },
352 { "tree", no_argument, 0, Tree },
[626dbc10]353 { "tuple-expansion", no_argument, 0, TupleExpansion },
[0da3e2c]354 { "validate", no_argument, 0, Validate },
355 { 0, 0, 0, 0 }
356 }; // long_opts
357 int long_index;
358
359 opterr = 0; // (global) prevent getopt from printing error messages
360
361 int c;
[626dbc10]362 while ( (c = getopt_long( argc, argv, "abBcefglnpqrstTvyzD:F:", long_opts, &long_index )) != -1 ) {
[0da3e2c]363 switch ( c ) {
364 case Ast:
365 case 'a': // dump AST
366 astp = true;
367 break;
368 case Bresolver:
369 case 'b': // print before resolver steps
370 bresolvep = true;
371 break;
[626dbc10]372 case 'B': // print before box steps
[0da3e2c]373 bboxp = true;
374 break;
375 case CtorInitFix:
376 case 'c':
377 ctorinitp = true;
378 break;
379 case Expr:
380 case 'e': // dump AST after expression analysis
381 exprp = true;
382 break;
383 case ExprAlt:
384 case 'f': // print alternatives for expressions
385 expraltp = true;
386 break;
387 case Grammar:
388 case 'g': // bison debugging info (grammar rules)
[926af74]389 yydebug = true;
[0da3e2c]390 break;
391 case LibCFA:
392 case 'l': // generate libcfa.c
393 libcfap = true;
394 break;
395 case Nopreamble:
396 case 'n': // do not read preamble
397 nopreludep = true;
398 break;
399 case Prototypes:
400 case 'p': // generate prototypes for preamble functions
401 noprotop = true;
402 break;
403 case Parse:
404 case 'q': // dump parse tree
405 parsep = true;
406 break;
407 case Resolver:
408 case 'r': // print resolver steps
409 resolvep = true;
410 break;
411 case Symbol:
412 case 's': // print symbol table events
413 symtabp = true;
414 break;
415 case Tree:
416 case 't': // build in tree
417 treep = true;
418 break;
[626dbc10]419 case TupleExpansion:
420 case 'T': // print after tuple expansion
421 tuplep = true;
422 break;
[0da3e2c]423 case 'v': // dump AST after decl validation pass
424 validp = true;
425 break;
426 case 'y':
427 errorp = true;
428 break;
429 case 'z':
430 codegenp = true;
431 break;
432 case 'D': // ignore -Dxxx
433 break;
434 case 'F': // source file-name without suffix
435 filename = optarg;
436 break;
437 case '?':
[3b8e52c]438 assertf( false, "Unknown option: '%c'\n", (char)optopt );
[0da3e2c]439 default:
440 abort();
441 } // switch
442 } // while
443} // parse_cmdline
444
[8b7ee09]445static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
[0da3e2c]446 extern int yyparse( void );
[cbaee0d]447 extern FILE * yyin;
[0da3e2c]448 extern int yylineno;
449
[8b7ee09]450 ::linkage = linkage; // set globals
[0da3e2c]451 yyin = input;
452 yylineno = 1;
453 typedefTable.enterScope();
454 int parseStatus = yyparse();
[81419b5]455
456 fclose( input );
[0da3e2c]457 if ( shouldExit || parseStatus != 0 ) {
458 exit( parseStatus );
[81419b5]459 } // if
[0da3e2c]460} // parse
[81419b5]461
[1ab4ce2]462static bool notPrelude( Declaration * decl ) {
463 return ! LinkageSpec::isBuiltin( decl->get_linkage() );
[0da3e2c]464} // notPrelude
[1ab4ce2]465
[e6955b1]466static void dump( list< Declaration * > & translationUnit, ostream & out ) {
467 list< Declaration * > decls;
[926af74]468
[1ab4ce2]469 if ( noprotop ) {
[e6955b1]470 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
[1ab4ce2]471 } else {
472 decls = translationUnit;
[926af74]473 } // if
[1ab4ce2]474
[f77f12e2]475 printAll( decls, out );
[7f5566b]476 deleteAll( translationUnit );
[0da3e2c]477} // dump
[1ab4ce2]478
[51b73452]479// Local Variables: //
[b87a5ed]480// tab-width: 4 //
481// mode: c++ //
482// compile-command: "make install" //
[51b73452]483// End: //
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