source: src/main.cc@ e4b37a1

ADT ast-experimental enum forall-pointer-decay jacob/cs343-translation pthread-emulation qualifiedEnum
Last change on this file since e4b37a1 was 9f5a19fa, checked in by Henry Xue <y58xue@…>, 4 years ago

Enable expandMemberTuples new AST pass

Other work still needs to be done (e.g. convert CodeTools "passes"
to use new AST)

  • Property mode set to 100644
File size: 27.6 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 : Peter Buhr and Rob Schluntz
10// Created On : Fri May 15 23:12:02 2015
11// Last Modified By : Henry Xue
12// Last Modified On : Mon Aug 23 15:42:08 2021
13// Update Count : 650
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 <cassert> // for assertf
20#include <cstdio> // for fopen, FILE, fclose, stdin
21#include <cstdlib> // for exit, free, abort, EXIT_F...
22#include <csignal> // for signal, SIGABRT, SIGSEGV
23#include <cstring> // for index
24#include <fstream> // for ofstream
25#include <iostream> // for operator<<, basic_ostream
26#include <iomanip>
27#include <iterator> // for back_inserter
28#include <list> // for list
29#include <string> // for char_traits, operator<<
30
31using namespace std;
32
33#include "AST/Convert.hpp"
34#include "CompilationState.h"
35#include "../config.h" // for CFA_LIBDIR
36#include "CodeGen/FixMain.h" // for FixMain
37#include "CodeGen/FixNames.h" // for fixNames
38#include "CodeGen/Generate.h" // for generate
39#include "CodeGen/LinkOnce.h" // for translateLinkOnce
40#include "CodeTools/DeclStats.h" // for printDeclStats
41#include "CodeTools/ResolvProtoDump.h" // for dumpAsResolvProto
42#include "CodeTools/TrackLoc.h" // for fillLocations
43#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
44#include "Common/CompilerError.h" // for CompilerError
45#include "Common/Stats.h"
46#include "Common/PassVisitor.h"
47#include "Common/SemanticError.h" // for SemanticError
48#include "Common/UnimplementedError.h" // for UnimplementedError
49#include "Common/utility.h" // for deleteAll, filter, printAll
50#include "Concurrency/Waitfor.h" // for generateWaitfor
51#include "ControlStruct/ExceptDecl.h" // for translateExcept
52#include "ControlStruct/ExceptTranslate.h" // for translateEHM
53#include "ControlStruct/Mutate.h" // for mutate
54#include "GenPoly/Box.h" // for box
55#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
56#include "GenPoly/Lvalue.h" // for convertLvalue
57#include "GenPoly/Specialize.h" // for convertSpecializations
58#include "InitTweak/FixInit.h" // for fix
59#include "InitTweak/GenInit.h" // for genInit
60#include "MakeLibCfa.h" // for makeLibCfa
61#include "Parser/ParseNode.h" // for DeclarationNode, buildList
62#include "Parser/TypedefTable.h" // for TypedefTable
63#include "ResolvExpr/AlternativePrinter.h" // for AlternativePrinter
64#include "ResolvExpr/Resolver.h" // for resolve
65#include "SymTab/Validate.h" // for validate
66#include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic
67#include "SynTree/Declaration.h" // for Declaration
68#include "SynTree/Visitor.h" // for acceptAll
69#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
70#include "Virtual/ExpandCasts.h" // for expandCasts
71
72
73static void NewPass( const char * const name ) {
74 Stats::Heap::newPass( name );
75 using namespace Stats::Counters;
76 {
77 static auto group = build<CounterGroup>( "Pass Visitor" );
78 auto pass = build<CounterGroup>( name, group );
79 pass_visitor_stats.depth = 0;
80 pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
81 pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
82 }
83 {
84 static auto group = build<CounterGroup>( "Syntax Node" );
85 auto pass = build<CounterGroup>( name, group );
86 BaseSyntaxNode::new_nodes = build<SimpleCounter>( "Allocs", pass );
87 }
88}
89
90#define PASS( name, pass ) \
91 if ( errorp ) { cerr << name << endl; } \
92 NewPass(name); \
93 Stats::Time::StartBlock(name); \
94 pass; \
95 Stats::Time::StopBlock();
96
97LinkageSpec::Spec linkage = LinkageSpec::Cforall;
98TypedefTable typedefTable;
99DeclarationNode * parseTree = nullptr; // program parse tree
100
101static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
102
103static string PreludeDirector = "";
104
105static void parse_cmdline( int argc, char * argv[] );
106static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
107static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
108static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
109
110static void backtrace( int start ) { // skip first N stack frames
111 enum { Frames = 50, }; // maximum number of stack frames
112 void * array[Frames];
113 size_t size = ::backtrace( array, Frames );
114 char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
115
116 *index( messages[0], '(' ) = '\0'; // find executable name
117 cerr << "Stack back trace for: " << messages[0] << endl;
118
119 // skip last 2 stack frames after main
120 for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
121 char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
122
123 for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
124 if ( *p == '(' ) {
125 mangled_name = p;
126 } else if ( *p == '+' ) {
127 offset_begin = p;
128 } else if ( *p == ')' ) {
129 offset_end = p;
130 break;
131 } // if
132 } // for
133
134 // if line contains symbol, attempt to demangle
135 int frameNo = i - start;
136 if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
137 *mangled_name++ = '\0'; // delimit strings
138 *offset_begin++ = '\0';
139 *offset_end++ = '\0';
140
141 int status;
142 char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
143 // bug in __cxa_demangle for single-character lower-case non-mangled names
144 if ( status == 0 ) { // demangling successful ?
145 cerr << "(" << frameNo << ") " << messages[i] << " : "
146 << real_name << "+" << offset_begin << offset_end << endl;
147 } else { // otherwise, output mangled name
148 cerr << "(" << frameNo << ") " << messages[i] << " : "
149 << mangled_name << "(/*unknown*/)+" << offset_begin << offset_end << endl;
150 } // if
151
152 free( real_name );
153 } else { // otherwise, print the whole line
154 cerr << "(" << frameNo << ") " << messages[i] << endl;
155 } // if
156 } // for
157
158 free( messages );
159} // backtrace
160
161#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
162
163static void _Signal(struct sigaction & act, int sig, int flags ) {
164 act.sa_flags = flags;
165
166 if ( sigaction( sig, &act, nullptr ) == -1 ) {
167 cerr << "*cfa-cpp compilation error* problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
168 _exit( EXIT_FAILURE );
169 } // if
170}
171
172static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
173 struct sigaction act;
174 act.sa_sigaction = (void (*)(int, siginfo_t *, void *))handler;
175 _Signal(act, sig, flags);
176} // Signal
177
178static void Signal( int sig, void (* handler)(int), int flags ) {
179 struct sigaction act;
180 act.sa_handler = handler;
181 _Signal(act, sig, flags);
182} // Signal
183
184static void sigSegvBusHandler( SIGPARMS ) {
185 if ( sfp->si_addr == nullptr ) {
186 cerr << "Null pointer (nullptr) dereference." << endl;
187 } else {
188 cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
189 << "Possible cause is reading outside the address space or writing to a protected area within the address space with an invalid pointer or subscript." << endl;
190 } // if
191 backtrace( 2 ); // skip first 2 stack frames
192 abort(); // cause core dump for debugging
193} // sigSegvBusHandler
194
195static void sigFpeHandler( SIGPARMS ) {
196 const char * msg;
197
198 switch ( sfp->si_code ) {
199 case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
200 case FPE_FLTOVF: msg = "overflow"; break;
201 case FPE_FLTUND: msg = "underflow"; break;
202 case FPE_FLTRES: msg = "inexact result"; break;
203 case FPE_FLTINV: msg = "invalid operation"; break;
204 default: msg = "unknown";
205 } // choose
206 cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
207 << "Possible cause is constant-expression evaluation invalid." << endl;
208 backtrace( 2 ); // skip first 2 stack frames
209 abort(); // cause core dump for debugging
210} // sigFpeHandler
211
212static void sigAbortHandler( SIGPARMS ) {
213 backtrace( 6 ); // skip first 6 stack frames
214 Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
215 raise( SIGABRT ); // reraise SIGABRT
216} // sigAbortHandler
217
218int main( int argc, char * argv[] ) {
219 FILE * input; // use FILE rather than istream because yyin is FILE
220 ostream * output = & cout;
221 list< Declaration * > translationUnit;
222
223 Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
224 Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
225 Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
226 Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
227
228 // cout << "main" << endl;
229 // for ( int i = 0; i < argc; i += 1 ) {
230 // cout << '\t' << argv[i] << endl;
231 // } // for
232
233 parse_cmdline( argc, argv ); // process command-line arguments
234 CodeGen::FixMain::setReplaceMain( !nomainp );
235
236 if ( waiting_for_gdb ) {
237 cerr << "Waiting for gdb" << endl;
238 cerr << "run :" << endl;
239 cerr << " gdb attach " << getpid() << endl;
240 raise(SIGSTOP);
241 } // if
242
243 try {
244 // choose to read the program from a file or stdin
245 if ( optind < argc ) { // any commands after the flags ? => input file name
246 input = fopen( argv[ optind ], "r" );
247 assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
248 optind += 1;
249 } else { // no input file name
250 input = stdin;
251 } // if
252
253 Stats::Time::StartGlobal();
254 NewPass("Parse");
255 Stats::Time::StartBlock("Parse");
256
257 // read in the builtins, extras, and the prelude
258 if ( ! nopreludep ) { // include gcc builtins
259 // -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
260
261 assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
262
263 // Read to gcc builtins, if not generating the cfa library
264 FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cf").c_str(), "r" );
265 assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
266 parse( gcc_builtins, LinkageSpec::Compiler );
267
268 // read the extra prelude in, if not generating the cfa library
269 FILE * extras = fopen( (PreludeDirector + "/extras.cf").c_str(), "r" );
270 assertf( extras, "cannot open extras.cf\n" );
271 parse( extras, LinkageSpec::BuiltinC );
272
273 if ( ! libcfap ) {
274 // read the prelude in, if not generating the cfa library
275 FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
276 assertf( prelude, "cannot open prelude.cfa\n" );
277 parse( prelude, LinkageSpec::Intrinsic );
278
279 // Read to cfa builtins, if not generating the cfa library
280 FILE * builtins = fopen( (PreludeDirector + "/builtins.cf").c_str(), "r" );
281 assertf( builtins, "cannot open builtins.cf\n" );
282 parse( builtins, LinkageSpec::BuiltinCFA );
283 } // if
284 } // if
285
286 parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
287
288 if ( parsep ) {
289 parseTree->printList( cout );
290 delete parseTree;
291 return EXIT_SUCCESS;
292 } // if
293
294 buildList( parseTree, translationUnit );
295 delete parseTree;
296 parseTree = nullptr;
297
298 if ( astp ) {
299 dump( translationUnit );
300 return EXIT_SUCCESS;
301 } // if
302
303 // Temporary: fill locations after parsing so that every node has a location, for early error messages.
304 // Eventually we should pass the locations from the parser to every node, but this quick and dirty solution
305 // works okay for now.
306 CodeTools::fillLocations( translationUnit );
307 Stats::Time::StopBlock();
308
309 PASS( "Translate Exception Declarations", ControlStruct::translateExcept( translationUnit ) );
310 if ( exdeclp ) {
311 dump( translationUnit );
312 return EXIT_SUCCESS;
313 } // if
314
315 // add the assignment statement after the initialization of a type parameter
316 PASS( "Validate", SymTab::validate( translationUnit, symtabp ) );
317 if ( symtabp ) {
318 deleteAll( translationUnit );
319 return EXIT_SUCCESS;
320 } // if
321
322 if ( expraltp ) {
323 PassVisitor<ResolvExpr::AlternativePrinter> printer( cout );
324 acceptAll( translationUnit, printer );
325 return EXIT_SUCCESS;
326 } // if
327
328 if ( validp ) {
329 dump( translationUnit );
330 return EXIT_SUCCESS;
331 } // if
332
333 PASS( "Translate Throws", ControlStruct::translateThrows( translationUnit ) );
334 PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) );
335 PASS( "Fix Names", CodeGen::fixNames( translationUnit ) );
336 PASS( "Gen Init", InitTweak::genInit( translationUnit ) );
337
338 if ( libcfap ) {
339 // generate the bodies of cfa library functions
340 LibCfa::makeLibCfa( translationUnit );
341 } // if
342
343 if ( declstatsp ) {
344 CodeTools::printDeclStats( translationUnit );
345 deleteAll( translationUnit );
346 return EXIT_SUCCESS;
347 } // if
348
349 if ( bresolvep ) {
350 dump( translationUnit );
351 return EXIT_SUCCESS;
352 } // if
353
354 CodeTools::fillLocations( translationUnit );
355
356 if ( resolvprotop ) {
357 CodeTools::dumpAsResolvProto( translationUnit );
358 return EXIT_SUCCESS;
359 } // if
360
361 if( useNewAST ) {
362 if (Stats::Counters::enabled) {
363 ast::pass_visitor_stats.avg = Stats::Counters::build<Stats::Counters::AverageCounter<double>>("Average Depth - New");
364 ast::pass_visitor_stats.max = Stats::Counters::build<Stats::Counters::MaxCounter<double>>("Max depth - New");
365 }
366 auto transUnit = convert( move( translationUnit ) );
367
368 PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( transUnit ) );
369
370 PASS( "Resolve", ResolvExpr::resolve( transUnit ) );
371 if ( exprp ) {
372 dump( move( transUnit ) );
373 return EXIT_SUCCESS;
374 } // if
375
376 forceFillCodeLocations( transUnit );
377
378 PASS( "Fix Init", InitTweak::fix(transUnit, buildingLibrary()));
379 translationUnit = convert( move( transUnit ) );
380 } else {
381 PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) );
382
383 PASS( "Resolve", ResolvExpr::resolve( translationUnit ) );
384 if ( exprp ) {
385 dump( translationUnit );
386 return EXIT_SUCCESS;
387 }
388
389 PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) );
390 }
391
392 // fix ObjectDecl - replaces ConstructorInit nodes
393 if ( ctorinitp ) {
394 dump ( translationUnit );
395 return EXIT_SUCCESS;
396 } // if
397
398 PASS( "Expand Unique Expr", Tuples::expandUniqueExpr( translationUnit ) ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent 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
399
400 PASS( "Translate Tries" , ControlStruct::translateTries( translationUnit ) );
401
402 PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) );
403
404 PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded
405
406 PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this?
407
408 if ( tuplep ) {
409 dump( translationUnit );
410 return EXIT_SUCCESS;
411 } // if
412
413 PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM
414
415 PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) );
416 if ( genericsp ) {
417 dump( translationUnit );
418 return EXIT_SUCCESS;
419 } // if
420
421 PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) );
422
423 if ( bboxp ) {
424 dump( translationUnit );
425 return EXIT_SUCCESS;
426 } // if
427 PASS( "Box", GenPoly::box( translationUnit ) );
428
429 PASS( "Link-Once", CodeGen::translateLinkOnce( translationUnit ) );
430
431 // Code has been lowered to C, now we can start generation.
432
433 if ( bcodegenp ) {
434 dump( translationUnit );
435 return EXIT_SUCCESS;
436 } // if
437
438 if ( optind < argc ) { // any commands after the flags and input file ? => output file name
439 output = new ofstream( argv[ optind ] );
440 } // if
441
442 CodeTools::fillLocations( translationUnit );
443 PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) );
444
445 CodeGen::FixMain::fix( *output, (PreludeDirector + "/bootloader.c").c_str() );
446 if ( output != &cout ) {
447 delete output;
448 } // if
449 } catch ( SemanticErrorException & e ) {
450 if ( errorp ) {
451 cerr << "---AST at error:---" << endl;
452 dump( translationUnit, cerr );
453 cerr << endl << "---End of AST, begin error message:---\n" << endl;
454 } // if
455 e.print();
456 if ( output != &cout ) {
457 delete output;
458 } // if
459 return EXIT_FAILURE;
460 } catch ( UnimplementedError & e ) {
461 cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
462 if ( output != &cout ) {
463 delete output;
464 } // if
465 return EXIT_FAILURE;
466 } catch ( CompilerError & e ) {
467 cerr << "Compiler Error: " << e.get_what() << endl;
468 cerr << "(please report bugs to [REDACTED])" << endl;
469 if ( output != &cout ) {
470 delete output;
471 } // if
472 return EXIT_FAILURE;
473 } catch ( std::bad_alloc & ) {
474 cerr << "*cfa-cpp compilation error* std::bad_alloc" << endl;
475 backtrace( 1 );
476 abort();
477 } catch ( ... ) {
478 exception_ptr eptr = current_exception();
479 try {
480 if (eptr) {
481 rethrow_exception(eptr);
482 } else {
483 cerr << "*cfa-cpp compilation error* exception uncaught and unknown" << endl;
484 } // if
485 } catch( const exception & e ) {
486 cerr << "*cfa-cpp compilation error* uncaught exception \"" << e.what() << "\"\n";
487 } // try
488 return EXIT_FAILURE;
489 } // try
490
491 deleteAll( translationUnit );
492 Stats::print();
493 return EXIT_SUCCESS;
494} // main
495
496
497static const char optstring[] = ":c:ghlLmNnpdOAP:S:twW:D:";
498
499enum { PreludeDir = 128 };
500static struct option long_opts[] = {
501 { "colors", required_argument, nullptr, 'c' },
502 { "gdb", no_argument, nullptr, 'g' },
503 { "help", no_argument, nullptr, 'h' },
504 { "libcfa", no_argument, nullptr, 'l' },
505 { "linemarks", no_argument, nullptr, 'L' },
506 { "no-main", no_argument, 0, 'm' },
507 { "no-linemarks", no_argument, nullptr, 'N' },
508 { "no-prelude", no_argument, nullptr, 'n' },
509 { "prototypes", no_argument, nullptr, 'p' },
510 { "deterministic-out", no_argument, nullptr, 'd' },
511 { "old-ast", no_argument, nullptr, 'O'},
512 { "new-ast", no_argument, nullptr, 'A'},
513 { "print", required_argument, nullptr, 'P' },
514 { "prelude-dir", required_argument, nullptr, PreludeDir },
515 { "statistics", required_argument, nullptr, 'S' },
516 { "tree", no_argument, nullptr, 't' },
517 { "", no_argument, nullptr, 0 }, // -w
518 { "", no_argument, nullptr, 0 }, // -W
519 { "", no_argument, nullptr, 0 }, // -D
520 { nullptr, 0, nullptr, 0 }
521}; // long_opts
522
523static const char * description[] = {
524 "diagnostic color: never, always, auto", // -c
525 "wait for gdb to attach", // -g
526 "print translator help message", // -h
527 "generate libcfa.c", // -l
528 "generate line marks", // -L
529 "do not replace main", // -m
530 "do not generate line marks", // -N
531 "do not read prelude", // -n
532 "do not generate prelude prototypes => prelude not printed", // -p
533 "only print deterministic output", // -d
534 "Use the old-ast", // -O
535 "Use the new-ast", // -A
536 "print", // -P
537 "<directory> prelude directory for debug/nodebug", // no flag
538 "<option-list> enable profiling information: counters, heap, time, all, none", // -S
539 "building cfa standard lib", // -t
540 "", // -w
541 "", // -W
542 "", // -D
543}; // description
544
545static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
546
547static struct Printopts {
548 const char * name;
549 int & flag;
550 int val;
551 const char * descript;
552} printopts[] = {
553 { "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
554 { "asterr", errorp, true, "print AST on error" },
555 { "declstats", declstatsp, true, "code property statistics" },
556 { "parse", yydebug, true, "yacc (parsing) debug information" },
557 { "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
558 { "rproto", resolvprotop, true, "resolver-proto instance" },
559 { "rsteps", resolvep, true, "print resolver steps" },
560 { "tree", parsep, true, "print parse tree" },
561 // code dumps
562 { "ast", astp, true, "print AST after parsing" },
563 { "exdecl", exdeclp, true, "print AST after translating exception decls" },
564 { "symevt", symtabp, true, "print AST after symbol table events" },
565 { "altexpr", expraltp, true, "print alternatives for expressions" },
566 { "astdecl", validp, true, "print AST after declaration validation pass" },
567 { "resolver", bresolvep, true, "print AST before resolver step" },
568 { "astexpr", exprp, true, "print AST after expression analysis" },
569 { "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
570 { "tuple", tuplep, true, "print AST after tuple expansion" },
571 { "astgen", genericsp, true, "print AST after instantiate generics" },
572 { "box", bboxp, true, "print AST before box step" },
573 { "codegen", bcodegenp, true, "print AST before code generation" },
574};
575enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
576
577static void usage( char * argv[] ) {
578 cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
579 int i = 0, j = 1; // j skips starting colon
580 for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
581 if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
582 if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
583 cout << " -" << optstring[j] << ",";
584 } else { // no flag
585 j -= 1; // compensate
586 cout << " ";
587 } // if
588 cout << " --" << left << setw(12) << long_opts[i].name << " ";
589 if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
590 cout << "one of: " << endl;
591 for ( int i = 0; i < printoptsSize; i += 1 ) {
592 cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
593 } // for
594 } else {
595 cout << description[i] << endl;
596 } // if
597 } // if
598 if ( optstring[j + 1] == ':' ) j += 1;
599 } // for
600 if ( long_opts[i].name != 0 || optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
601 exit( EXIT_FAILURE );
602} // usage
603
604static void parse_cmdline( int argc, char * argv[] ) {
605 opterr = 0; // (global) prevent getopt from printing error messages
606
607 bool Wsuppress = false, Werror = false;
608 int c;
609 while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
610 switch ( c ) {
611 case 'c': // diagnostic colors
612 if ( strcmp( optarg, "always" ) == 0 ) {
613 ErrorHelpers::colors = ErrorHelpers::Colors::Always;
614 } else if ( strcmp( optarg, "never" ) == 0 ) {
615 ErrorHelpers::colors = ErrorHelpers::Colors::Never;
616 } else if ( strcmp( optarg, "auto" ) == 0 ) {
617 ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
618 } // if
619 break;
620 case 'h': // help message
621 usage( argv ); // no return
622 break;
623 case 'l': // generate libcfa.c
624 libcfap = true;
625 break;
626 case 'L': // generate line marks
627 linemarks = true;
628 break;
629 case 'm': // do not replace main
630 nomainp = true;
631 break;
632 case 'N': // do not generate line marks
633 linemarks = false;
634 break;
635 case 'n': // do not read prelude
636 nopreludep = true;
637 break;
638 case 'p': // generate prototypes for prelude functions
639 genproto = true;
640 break;
641 case 'd': // don't print non-deterministic output
642 deterministic_output = true;
643 break;
644 case 'O': // don't print non-deterministic output
645 useNewAST = false;
646 break;
647 case 'A': // don't print non-deterministic output
648 useNewAST = true;
649 break;
650 case 'P': // print options
651 for ( int i = 0;; i += 1 ) {
652 if ( i == printoptsSize ) {
653 cout << "Unknown --print option " << optarg << endl;
654 goto Default;
655 } // if
656 if ( strcmp( optarg, printopts[i].name ) == 0 ) {
657 printopts[i].flag = printopts[i].val;
658 break;
659 } // if
660 } // for
661 break;
662 case PreludeDir: // prelude directory for debug/nodebug, hidden
663 PreludeDirector = optarg;
664 break;
665 case 'S': // enable profiling information, argument comma separated list of names
666 Stats::parse_params( optarg );
667 break;
668 case 't': // building cfa stdlib
669 treep = true;
670 break;
671 case 'g': // wait for gdb
672 waiting_for_gdb = true;
673 break;
674 case 'w': // suppress all warnings, hidden
675 Wsuppress = true;
676 break;
677 case 'W': // coordinate gcc -W with CFA, hidden
678 if ( strcmp( optarg, "all" ) == 0 ) {
679 SemanticWarning_EnableAll();
680 } else if ( strcmp( optarg, "error" ) == 0 ) {
681 Werror = true;
682 } else {
683 char * warning = optarg;
684 Severity s;
685 if ( strncmp( optarg, "no-", 3 ) == 0 ) {
686 warning += 3;
687 s = Severity::Suppress;
688 } else {
689 s = Severity::Warn;
690 } // if
691 SemanticWarning_Set( warning, s );
692 } // if
693 break;
694 case 'D': // ignore -Dxxx, forwarded by cpp, hidden
695 break;
696 case '?': // unknown option
697 if ( optopt ) { // short option ?
698 cout << "Unknown option -" << (char)optopt << endl;
699 } else {
700 cout << "Unknown option " << argv[optind - 1] << endl;
701 } // if
702 goto Default;
703 case ':': // missing option
704 if ( optopt ) { // short option ?
705 cout << "Missing option for -" << (char)optopt << endl;
706 } else {
707 cout << "Missing option for " << argv[optind - 1] << endl;
708 } // if
709 goto Default;
710 Default:
711 default:
712 usage( argv ); // no return
713 } // switch
714 } // while
715
716 if ( Werror ) {
717 SemanticWarning_WarningAsError();
718 } // if
719 if ( Wsuppress ) {
720 SemanticWarning_SuppressAll();
721 } // if
722 // for ( const auto w : WarningFormats ) {
723 // cout << w.name << ' ' << (int)w.severity << endl;
724 // } // for
725} // parse_cmdline
726
727static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
728 extern int yyparse( void );
729 extern FILE * yyin;
730 extern int yylineno;
731
732 ::linkage = linkage; // set globals
733 yyin = input;
734 yylineno = 1;
735 int parseStatus = yyparse();
736
737 fclose( input );
738 if ( shouldExit || parseStatus != 0 ) {
739 exit( parseStatus );
740 } // if
741} // parse
742
743static bool notPrelude( Declaration * decl ) {
744 return ! LinkageSpec::isBuiltin( decl->get_linkage() );
745} // notPrelude
746
747static void dump( list< Declaration * > & translationUnit, ostream & out ) {
748 list< Declaration * > decls;
749
750 if ( genproto ) {
751 filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
752 } else {
753 decls = translationUnit;
754 } // if
755
756 // depending on commandline options, either generate code or dump the AST
757 if ( codegenp ) {
758 CodeGen::generate( decls, out, ! genproto, prettycodegenp );
759 } else {
760 printAll( decls, out );
761 } // if
762 deleteAll( translationUnit );
763} // dump
764
765static void dump( ast::TranslationUnit && transUnit, ostream & out ) {
766 std::list< Declaration * > translationUnit = convert( move( transUnit ) );
767 dump( translationUnit, out );
768}
769
770// Local Variables: //
771// tab-width: 4 //
772// mode: c++ //
773// compile-command: "make install" //
774// End: //
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