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source: src/main.cc @ 6009a5a

Last change on this file since 6009a5a was 61efa42, checked in by Andrew Beach <ajbeach@…>, 13 months ago
Took the special main linkage code out of FunctionDecl? and put it into a new pass. There is also a lot of related clean-up done.
Property mode set to `100644`
File size: 27.8 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 : Peter A. Buhr
12	// Last Modified On : Wed Nov 1 21:12:58 2023
13	// Update Count : 690
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
31	#include "AST/Pass.hpp" // for pass_visitor_stats
32	#include "AST/Print.hpp" // for printAll
33	#include "AST/TranslationUnit.hpp" // for TranslationUnit
34	#include "AST/Util.hpp" // for checkInvariants
35	#include "CompilationState.h"
36	#include "../config.h" // for CFA_LIBDIR
37	#include "CodeGen/FixMain.h" // for FixMain
38	#include "CodeGen/FixNames.h" // for fixNames
39	#include "CodeGen/Generate.h" // for generate
40	#include "CodeGen/LinkOnce.h" // for translateLinkOnce
41	#include "Common/CodeLocationTools.hpp" // for forceFillCodeLocations
42	#include "Common/DeclStats.hpp" // for printDeclStats
43	#include "Common/ResolvProtoDump.hpp" // for dumpAsResolverProto
44	#include "Common/Stats.h" // for Stats
45	#include "Common/utility.h" // for deleteAll, filter, printAll
46	#include "Concurrency/Actors.hpp" // for implementActors
47	#include "Concurrency/Corun.hpp" // for implementCorun
48	#include "Concurrency/Keywords.h" // for implementMutex, implement...
49	#include "Concurrency/Waitfor.h" // for generateWaitfor
50	#include "Concurrency/Waituntil.hpp" // for generateWaitUntil
51	#include "ControlStruct/ExceptDecl.h" // for translateExcept
52	#include "ControlStruct/ExceptTranslate.h" // for translateThrows, translat...
53	#include "ControlStruct/FixLabels.hpp" // for fixLabels
54	#include "ControlStruct/HoistControlDecls.hpp" // hoistControlDecls
55	#include "GenPoly/Box.h" // for box
56	#include "GenPoly/InstantiateGeneric.h" // for instantiateGeneric
57	#include "GenPoly/Lvalue.h" // for convertLvalue
58	#include "GenPoly/Specialize.h" // for convertSpecializations
59	#include "InitTweak/FixInit.h" // for fix
60	#include "InitTweak/GenInit.h" // for genInit
61	#include "MakeLibCfa.h" // for makeLibCfa
62	#include "Parser/RunParser.hpp" // for buildList, dumpParseTree,...
63	#include "ResolvExpr/CandidatePrinter.hpp" // for printCandidates
64	#include "ResolvExpr/EraseWith.hpp" // for eraseWith
65	#include "ResolvExpr/Resolver.h" // for resolve
66	#include "Tuples/Tuples.h" // for expandMemberTuples, expan...
67	#include "Validate/Autogen.hpp" // for autogenerateRoutines
68	#include "Validate/CompoundLiteral.hpp" // for handleCompoundLiterals
69	#include "Validate/EliminateTypedef.hpp" // for eliminateTypedef
70	#include "Validate/EnumAndPointerDecay.hpp" // for decayEnumsAndPointers
71	#include "Validate/FindSpecialDecls.h" // for findGlobalDecls
72	#include "Validate/FixQualifiedTypes.hpp" // for fixQualifiedTypes
73	#include "Validate/FixReturnTypes.hpp" // for fixReturnTypes
74	#include "Validate/ForallPointerDecay.hpp" // for decayForallPointers
75	#include "Validate/GenericParameter.hpp" // for fillGenericParameters, tr...
76	#include "Validate/HoistStruct.hpp" // for hoistStruct
77	#include "Validate/HoistTypeDecls.hpp" // for hoistTypeDecls
78	#include "Validate/InitializerLength.hpp" // for setLengthFromInitializer
79	#include "Validate/LabelAddressFixer.hpp" // for fixLabelAddresses
80	#include "Validate/LinkReferenceToTypes.hpp" // for linkReferenceToTypes
81	#include "Validate/ReplaceTypedef.hpp" // for replaceTypedef
82	#include "Validate/ReturnCheck.hpp" // for checkReturnStatements
83	#include "Validate/VerifyCtorDtorAssign.hpp" // for verifyCtorDtorAssign
84	#include "Virtual/ExpandCasts.h" // for expandCasts
85	#include "Virtual/VirtualDtor.hpp" // for implementVirtDtors
86
87	using namespace std;
88
89	static void NewPass( const char * const name ) {
90	Stats::Heap::newPass( name );
91	using namespace Stats::Counters;
92	{
93	static auto group = build<CounterGroup>( "Pass Visitor Template" );
94	auto pass = build<CounterGroup>( name, group );
95	ast::pass_visitor_stats.depth = 0;
96	ast::pass_visitor_stats.avg = build<AverageCounter<double>>( "Average Depth", pass );
97	ast::pass_visitor_stats.max = build<MaxCounter<double>>( "Max Depth", pass );
98	}
99	}
100
101	// Helpers for checkInvariant:
102	void checkInvariants( std::list< Declaration * > & ) {}
103	using ast::checkInvariants;
104
105	#define PASS( name, pass, unit, ... ) \
106	if ( errorp ) { cerr << name << endl; } \
107	NewPass(name); \
108	Stats::Time::StartBlock(name); \
109	pass(unit,##__VA_ARGS__); \
110	Stats::Time::StopBlock(); \
111	if ( invariant ) { \
112	checkInvariants(unit); \
113	}
114
115	#define DUMP( cond, unit ) \
116	if ( cond ) { \
117	dump(unit); \
118	return EXIT_SUCCESS; \
119	}
120
121	static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start
122
123	static string PreludeDirector = "";
124
125	static void parse_cmdline( int argc, char * argv[] );
126	static void dump( ast::TranslationUnit && transUnit, ostream & out = cout );
127
128	static void backtrace( int start ) { // skip first N stack frames
129	enum { Frames = 50, }; // maximum number of stack frames
130	void * array[Frames];
131	size_t size = ::backtrace( array, Frames );
132	char ** messages = ::backtrace_symbols( array, size ); // does not demangle names
133
134	*index( messages[0], '(' ) = '\0'; // find executable name
135	cerr << "Stack back trace for: " << messages[0] << endl;
136
137	// skip last 2 stack frames after main
138	for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
139	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
140
141	for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset
142	if ( *p == '(' ) {
143	mangled_name = p;
144	} else if ( *p == '+' ) {
145	offset_begin = p;
146	} else if ( *p == ')' ) {
147	offset_end = p;
148	break;
149	} // if
150	} // for
151
152	// if line contains symbol, attempt to demangle
153	int frameNo = i - start;
154	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
155	*mangled_name++ = '\0'; // delimit strings
156	*offset_begin++ = '\0';
157	*offset_end++ = '\0';
158
159	int status;
160	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
161	// bug in __cxa_demangle for single-character lower-case non-mangled names
162	if ( status == 0 ) { // demangling successful ?
163	cerr << "(" << frameNo << ") " << messages[i] << " : "
164	<< real_name << "+" << offset_begin << offset_end << endl;
165	} else { // otherwise, output mangled name
166	cerr << "(" << frameNo << ") " << messages[i] << " : "
167	<< mangled_name << "(/unknown/)+" << offset_begin << offset_end << endl;
168	} // if
169
170	free( real_name );
171	} else { // otherwise, print the whole line
172	cerr << "(" << frameNo << ") " << messages[i] << endl;
173	} // if
174	} // for
175
176	free( messages );
177	} // backtrace
178
179	#define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused ))
180
181	static void _Signal(struct sigaction & act, int sig, int flags ) {
182	act.sa_flags = flags;
183
184	if ( sigaction( sig, &act, nullptr ) == -1 ) {
185	cerr << "cfa-cpp compilation error problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl;
186	_exit( EXIT_FAILURE );
187	} // if
188	}
189
190	static void Signal( int sig, void (* handler)(SIGPARMS), int flags ) {
191	struct sigaction act;
192	act.sa_sigaction = (void ()(int, siginfo_t , void *))handler;
193	_Signal(act, sig, flags);
194	} // Signal
195
196	static void Signal( int sig, void (* handler)(int), int flags ) {
197	struct sigaction act;
198	act.sa_handler = handler;
199	_Signal(act, sig, flags);
200	} // Signal
201
202	static void sigSegvBusHandler( SIGPARMS ) {
203	if ( sfp->si_addr == nullptr ) {
204	cerr << "Null pointer (nullptr) dereference." << endl;
205	} else {
206	cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl
207	<< "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;
208	} // if
209	backtrace( 2 ); // skip first 2 stack frames
210	abort(); // cause core dump for debugging
211	} // sigSegvBusHandler
212
213	static void sigFpeHandler( SIGPARMS ) {
214	const char * msg;
215
216	switch ( sfp->si_code ) {
217	case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break;
218	case FPE_FLTOVF: msg = "overflow"; break;
219	case FPE_FLTUND: msg = "underflow"; break;
220	case FPE_FLTRES: msg = "inexact result"; break;
221	case FPE_FLTINV: msg = "invalid operation"; break;
222	default: msg = "unknown";
223	} // choose
224	cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl
225	<< "Possible cause is constant-expression evaluation invalid." << endl;
226	backtrace( 2 ); // skip first 2 stack frames
227	abort(); // cause core dump for debugging
228	} // sigFpeHandler
229
230	static void sigAbortHandler( SIGPARMS ) {
231	backtrace( 6 ); // skip first 6 stack frames
232	Signal( SIGABRT, SIG_DFL, SA_SIGINFO ); // reset default signal handler
233	raise( SIGABRT ); // reraise SIGABRT
234	} // sigAbortHandler
235
236	int main( int argc, char * argv[] ) {
237	FILE * input; // use FILE rather than istream because yyin is FILE
238	ostream * output = & cout;
239	ast::TranslationUnit transUnit;
240
241	Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO );
242	Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO );
243	Signal( SIGFPE, sigFpeHandler, SA_SIGINFO );
244	Signal( SIGABRT, sigAbortHandler, SA_SIGINFO );
245
246	// cout << "main" << endl;
247	// for ( int i = 0; i < argc; i += 1 ) {
248	// cout << '\t' << argv[i] << endl;
249	// } // for
250
251	parse_cmdline( argc, argv ); // process command-line arguments
252
253	if ( waiting_for_gdb ) {
254	cerr << "Waiting for gdb" << endl;
255	cerr << "run :" << endl;
256	cerr << " gdb attach " << getpid() << endl;
257	raise(SIGSTOP);
258	} // if
259
260	try {
261	// choose to read the program from a file or stdin
262	if ( optind < argc ) { // any commands after the flags ? => input file name
263	input = fopen( argv[ optind ], "r" );
264	assertf( input, "cannot open %s because %s\n", argv[ optind ], strerror( errno ) );
265	optind += 1;
266	} else { // no input file name
267	input = stdin;
268	} // if
269
270	Stats::Time::StartGlobal();
271	NewPass("Parse");
272	Stats::Time::StartBlock("Parse");
273
274	// read in the builtins, extras, and the prelude
275	if ( ! nopreludep ) { // include gcc builtins
276	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
277
278	assertf( !PreludeDirector.empty(), "Can't find prelude without option --prelude-dir must be used." );
279
280	// Read to gcc builtins, if not generating the cfa library
281	FILE * gcc_builtins = fopen( (PreludeDirector + "/gcc-builtins.cfa").c_str(), "r" );
282	assertf( gcc_builtins, "cannot open gcc-builtins.cf\n" );
283	parse( gcc_builtins, ast::Linkage::Compiler );
284
285	// read the extra prelude in, if not generating the cfa library
286	FILE * extras = fopen( (PreludeDirector + "/extras.cfa").c_str(), "r" );
287	assertf( extras, "cannot open extras.cf\n" );
288	parse( extras, ast::Linkage::BuiltinC );
289
290	if ( ! libcfap ) {
291	// read the prelude in, if not generating the cfa library
292	FILE * prelude = fopen( (PreludeDirector + "/prelude.cfa").c_str(), "r" );
293	assertf( prelude, "cannot open prelude.cfa\n" );
294	parse( prelude, ast::Linkage::Intrinsic );
295
296	// Read to cfa builtins, if not generating the cfa library
297	FILE * builtins = fopen( (PreludeDirector + "/builtins.cfa").c_str(), "r" );
298	assertf( builtins, "cannot open builtins.cf\n" );
299	parse( builtins, ast::Linkage::BuiltinCFA );
300	} // if
301	} // if
302
303	parse( input, libcfap ? ast::Linkage::Intrinsic : ast::Linkage::Cforall, yydebug );
304
305	transUnit = buildUnit();
306
307	DUMP( astp, std::move( transUnit ) );
308
309	Stats::Time::StopBlock();
310
311	PASS( "Hoist Type Decls", Validate::hoistTypeDecls, transUnit );
312
313	PASS( "Translate Exception Declarations", ControlStruct::translateExcept, transUnit );
314	DUMP( exdeclp, std::move( transUnit ) );
315	PASS( "Verify Ctor, Dtor & Assign", Validate::verifyCtorDtorAssign, transUnit );
316	PASS( "Replace Typedefs", Validate::replaceTypedef, transUnit );
317	PASS( "Fix Return Types", Validate::fixReturnTypes, transUnit );
318	PASS( "Enum and Pointer Decay", Validate::decayEnumsAndPointers, transUnit );
319
320	PASS( "Link Reference To Types", Validate::linkReferenceToTypes, transUnit );
321
322	PASS( "Forall Pointer Decay", Validate::decayForallPointers, transUnit );
323	PASS( "Fix Qualified Types", Validate::fixQualifiedTypes, transUnit );
324	PASS( "Eliminate Typedef", Validate::eliminateTypedef, transUnit );
325	PASS( "Hoist Struct", Validate::hoistStruct, transUnit );
326	PASS( "Validate Generic Parameters", Validate::fillGenericParameters, transUnit );
327	PASS( "Translate Dimensions", Validate::translateDimensionParameters, transUnit );
328	PASS( "Check Function Returns", Validate::checkReturnStatements, transUnit );
329	PASS( "Fix Return Statements", InitTweak::fixReturnStatements, transUnit );
330	PASS( "Implement Concurrent Keywords", Concurrency::implementKeywords, transUnit );
331	PASS( "Fix Unique Ids", Validate::fixUniqueIds, transUnit );
332	PASS( "Implement Corun", Concurrency::implementCorun, transUnit );
333	PASS( "Hoist Control Declarations", ControlStruct::hoistControlDecls, transUnit );
334
335	PASS( "Generate Autogen Routines", Validate::autogenerateRoutines, transUnit );
336
337	PASS( "Implement Actors", Concurrency::implementActors, transUnit );
338	PASS( "Implement Virtual Destructors", Virtual::implementVirtDtors, transUnit );
339	PASS( "Implement Mutex", Concurrency::implementMutex, transUnit );
340	PASS( "Implement Thread Start", Concurrency::implementThreadStarter, transUnit );
341	PASS( "Compound Literal", Validate::handleCompoundLiterals, transUnit );
342	PASS( "Set Length From Initializer", Validate::setLengthFromInitializer, transUnit );
343	PASS( "Find Global Decls", Validate::findGlobalDecls, transUnit );
344	PASS( "Fix Label Address", Validate::fixLabelAddresses, transUnit );
345
346	if ( symtabp ) {
347	return EXIT_SUCCESS;
348	} // if
349
350	if ( expraltp ) {
351	ResolvExpr::printCandidates( transUnit );
352	return EXIT_SUCCESS;
353	} // if
354
355	DUMP( validp, std::move( transUnit ) );
356
357	PASS( "Translate Throws", ControlStruct::translateThrows, transUnit );
358	PASS( "Fix Labels", ControlStruct::fixLabels, transUnit );
359	PASS( "Implement Waituntil", Concurrency::generateWaitUntil, transUnit );
360	PASS( "Fix Names", CodeGen::fixNames, transUnit );
361	PASS( "Gen Init", InitTweak::genInit, transUnit );
362	PASS( "Expand Member Tuples" , Tuples::expandMemberTuples, transUnit );
363
364	if ( libcfap ) {
365	// Generate the bodies of cfa library functions.
366	LibCfa::makeLibCfa( transUnit );
367	} // if
368
369	if ( declstatsp ) {
370	printDeclStats( transUnit );
371	return EXIT_SUCCESS;
372	} // if
373
374	DUMP( bresolvep, std::move( transUnit ) );
375
376	if ( resolvprotop ) {
377	dumpAsResolverProto( transUnit );
378	return EXIT_SUCCESS;
379	} // if
380
381	PASS( "Resolve", ResolvExpr::resolve, transUnit );
382	DUMP( exprp, std::move( transUnit ) );
383
384	PASS( "Fix Init", InitTweak::fix, transUnit, buildingLibrary() );
385	PASS( "Erase With", ResolvExpr::eraseWith, transUnit );
386
387	// fix ObjectDecl - replaces ConstructorInit nodes
388	DUMP( ctorinitp, std::move( transUnit ) );
389
390	// Currently not working due to unresolved issues with UniqueExpr
391	PASS( "Expand Unique Expr", Tuples::expandUniqueExpr, transUnit ); // 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
392
393	PASS( "Translate Tries", ControlStruct::translateTries, transUnit );
394	PASS( "Gen Waitfor", Concurrency::generateWaitFor, transUnit );
395	PASS( "Fix Main Linkage", CodeGen::fixMainLinkage, transUnit, !nomainp );
396
397	// Needs to happen before tuple types are expanded.
398	PASS( "Convert Specializations", GenPoly::convertSpecializations, transUnit );
399
400	PASS( "Expand Tuples", Tuples::expandTuples, transUnit );
401	DUMP( tuplep, std::move( transUnit ) );
402
403	// Must come after Translate Tries.
404	PASS( "Virtual Expand Casts", Virtual::expandCasts, transUnit );
405
406	PASS( "Instantiate Generics", GenPoly::instantiateGeneric, transUnit );
407	DUMP( genericsp, std::move( transUnit ) );
408
409	PASS( "Convert L-Value", GenPoly::convertLvalue, transUnit );
410	DUMP( bboxp, std::move( transUnit ) );
411	PASS( "Box", GenPoly::box, transUnit );
412	PASS( "Link-Once", CodeGen::translateLinkOnce, transUnit );
413
414	// Code has been lowered to C, now we can start generation.
415
416	DUMP( bcodegenp, std::move( transUnit ) );
417
418	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
419	output = new ofstream( argv[ optind ] );
420	} // if
421
422	PASS( "Code Gen", CodeGen::generate, transUnit, *output, !genproto, prettycodegenp, true, linemarks, false );
423	CodeGen::fixMainInvoke( transUnit, *output, (PreludeDirector + "/bootloader.c").c_str() );
424
425	if ( output != &cout ) {
426	delete output;
427	} // if
428	} catch ( SemanticErrorException & e ) {
429	if ( errorp ) {
430	cerr << "---AST at error:---" << endl;
431	dump( std::move( transUnit ), cerr );
432	cerr << endl << "---End of AST, begin error message:---\n" << endl;
433	} // if
434	e.print();
435	if ( output != &cout ) {
436	delete output;
437	} // if
438	return EXIT_FAILURE;
439	} catch ( std::bad_alloc & ) {
440	cerr << "cfa-cpp compilation error std::bad_alloc" << endl;
441	backtrace( 1 );
442	abort();
443	} catch ( ... ) {
444	exception_ptr eptr = current_exception();
445	try {
446	if (eptr) {
447	rethrow_exception(eptr);
448	} else {
449	cerr << "cfa-cpp compilation error exception uncaught and unknown" << endl;
450	} // if
451	} catch( const exception & e ) {
452	cerr << "cfa-cpp compilation error uncaught exception \"" << e.what() << "\"\n";
453	} // try
454	return EXIT_FAILURE;
455	} // try
456
457	Stats::print();
458	return EXIT_SUCCESS;
459	} // main
460
461
462	static const char optstring[] = ":c:ghilLmNnpdP:S:twW:D:";
463
464	enum { PreludeDir = 128 };
465	static struct option long_opts[] = {
466	{ "colors", required_argument, nullptr, 'c' },
467	{ "gdb", no_argument, nullptr, 'g' },
468	{ "help", no_argument, nullptr, 'h' },
469	{ "invariant", no_argument, nullptr, 'i' },
470	{ "libcfa", no_argument, nullptr, 'l' },
471	{ "linemarks", no_argument, nullptr, 'L' },
472	{ "no-main", no_argument, nullptr, 'm' },
473	{ "no-linemarks", no_argument, nullptr, 'N' },
474	{ "no-prelude", no_argument, nullptr, 'n' },
475	{ "prototypes", no_argument, nullptr, 'p' },
476	{ "deterministic-out", no_argument, nullptr, 'd' },
477	{ "print", required_argument, nullptr, 'P' },
478	{ "prelude-dir", required_argument, nullptr, PreludeDir },
479	{ "statistics", required_argument, nullptr, 'S' },
480	{ "tree", no_argument, nullptr, 't' },
481	{ "", no_argument, nullptr, 0 }, // -w
482	{ "", no_argument, nullptr, 0 }, // -W
483	{ "", no_argument, nullptr, 0 }, // -D
484	{ nullptr, 0, nullptr, 0 }
485	}; // long_opts
486
487	static const char * description[] = {
488	"diagnostic color: never, always, auto", // -c
489	"wait for gdb to attach", // -g
490	"print translator help message", // -h
491	"invariant checking during AST passes", // -i
492	"generate libcfa.c", // -l
493	"generate line marks", // -L
494	"do not replace main", // -m
495	"do not generate line marks", // -N
496	"do not read prelude", // -n
497	"do not generate prelude prototypes => prelude not printed", // -p
498	"only print deterministic output", // -d
499	"print", // -P
500	"<directory> prelude directory for debug/nodebug", // no flag
501	"<option-list> enable profiling information: counters, heap, time, all, none", // -S
502	"building cfa standard lib", // -t
503	"", // -w
504	"", // -W
505	"", // -D
506	}; // description
507
508	static_assert( sizeof( long_opts ) / sizeof( long_opts[0] ) - 1 == sizeof( description ) / sizeof( description[0] ), "Long opts and description must match" );
509
510	static struct Printopts {
511	const char * name;
512	int & flag;
513	int val;
514	const char * descript;
515	} printopts[] = {
516	{ "ascodegen", codegenp, true, "print AST as codegen rather than AST" },
517	{ "asterr", errorp, true, "print AST on error" },
518	{ "declstats", declstatsp, true, "print code property statistics" },
519	{ "parse", yydebug, true, "print yacc (parsing) debug information" },
520	{ "pretty", prettycodegenp, true, "prettyprint for ascodegen flag" },
521	{ "rproto", resolvprotop, true, "resolver-proto instance" },
522	{ "rsteps", resolvep, true, "print resolver steps" },
523	// AST dumps
524	{ "ast", astp, true, "print AST after parsing" },
525	{ "excpdecl", exdeclp, true, "print AST after translating exception decls" },
526	{ "symevt", symtabp, true, "print AST after symbol table events" },
527	{ "expralt", expraltp, true, "print AST after expressions alternatives" },
528	{ "valdecl", validp, true, "print AST after declaration validation pass" },
529	{ "bresolver", bresolvep, true, "print AST before resolver step" },
530	{ "expranly", exprp, true, "print AST after expression analysis" },
531	{ "ctordtor", ctorinitp, true, "print AST after ctor/dtor are replaced" },
532	{ "tuple", tuplep, true, "print AST after tuple expansion" },
533	{ "instgen", genericsp, true, "print AST after instantiate generics" },
534	{ "bbox", bboxp, true, "print AST before box pass" },
535	{ "bcodegen", bcodegenp, true, "print AST before code generation" },
536	};
537	enum { printoptsSize = sizeof( printopts ) / sizeof( printopts[0] ) };
538
539	static void usage( char * argv[] ) {
540	cout << "Usage: " << argv[0] << " [options] [input-file (default stdin)] [output-file (default stdout)], where options are:" << endl;
541	int i = 0, j = 1; // j skips starting colon
542	for ( ; long_opts[i].name != 0 && optstring[j] != '\0'; i += 1, j += 1 ) {
543	if ( long_opts[i].name[0] != '\0' ) { // hidden option, internal usage only
544	if ( strcmp( long_opts[i].name, "prelude-dir" ) != 0 ) { // flag
545	cout << " -" << optstring[j] << ",";
546	} else { // no flag
547	j -= 1; // compensate
548	cout << " ";
549	} // if
550	cout << " --" << left << setw(12) << long_opts[i].name << " ";
551	if ( strcmp( long_opts[i].name, "print" ) == 0 ) {
552	cout << "one of: " << endl;
553	for ( int i = 0; i < printoptsSize; i += 1 ) {
554	cout << setw(10) << " " << left << setw(10) << printopts[i].name << " " << printopts[i].descript << endl;
555	} // for
556	} else {
557	cout << description[i] << endl;
558	} // if
559	} // if
560	if ( optstring[j + 1] == ':' ) j += 1;
561	} // for
562	if ( long_opts[i].name != 0 \|\| optstring[j] != '\0' ) assertf( false, "internal error, mismatch of option flags and names\n" );
563	exit( EXIT_FAILURE );
564	} // usage
565
566	static void parse_cmdline( int argc, char * argv[] ) {
567	opterr = 0; // (global) prevent getopt from printing error messages
568
569	bool Wsuppress = false, Werror = false;
570	int c;
571	while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) {
572	switch ( c ) {
573	case 'c': // diagnostic colors
574	if ( strcmp( optarg, "always" ) == 0 ) {
575	ErrorHelpers::colors = ErrorHelpers::Colors::Always;
576	} else if ( strcmp( optarg, "never" ) == 0 ) {
577	ErrorHelpers::colors = ErrorHelpers::Colors::Never;
578	} else if ( strcmp( optarg, "auto" ) == 0 ) {
579	ErrorHelpers::colors = ErrorHelpers::Colors::Auto;
580	} // if
581	break;
582	case 'h': // help message
583	usage( argv ); // no return
584	break;
585	case 'i': // invariant checking
586	invariant = true;
587	break;
588	case 'l': // generate libcfa.c
589	libcfap = true;
590	break;
591	case 'L': // generate line marks
592	linemarks = true;
593	break;
594	case 'm': // do not replace main
595	nomainp = true;
596	break;
597	case 'N': // do not generate line marks
598	linemarks = false;
599	break;
600	case 'n': // do not read prelude
601	nopreludep = true;
602	break;
603	case 'p': // generate prototypes for prelude functions
604	genproto = true;
605	break;
606	case 'd': // don't print non-deterministic output
607	deterministic_output = true;
608	break;
609	case 'P': // print options
610	for ( int i = 0;; i += 1 ) {
611	if ( i == printoptsSize ) {
612	cout << "Unknown --print option " << optarg << endl;
613	goto Default;
614	} // if
615	if ( strcmp( optarg, printopts[i].name ) == 0 ) {
616	printopts[i].flag = printopts[i].val;
617	break;
618	} // if
619	} // for
620	break;
621	case PreludeDir: // prelude directory for debug/nodebug, hidden
622	PreludeDirector = optarg;
623	break;
624	case 'S': // enable profiling information, argument comma separated list of names
625	Stats::parse_params( optarg );
626	break;
627	case 't': // building cfa stdlib
628	treep = true;
629	break;
630	case 'g': // wait for gdb
631	waiting_for_gdb = true;
632	break;
633	case 'w': // suppress all warnings, hidden
634	Wsuppress = true;
635	break;
636	case 'W': // coordinate gcc -W with CFA, hidden
637	if ( strcmp( optarg, "all" ) == 0 ) {
638	SemanticWarning_EnableAll();
639	} else if ( strcmp( optarg, "error" ) == 0 ) {
640	Werror = true;
641	} else {
642	char * warning = optarg;
643	Severity s;
644	if ( strncmp( optarg, "no-", 3 ) == 0 ) {
645	warning += 3;
646	s = Severity::Suppress;
647	} else {
648	s = Severity::Warn;
649	} // if
650	SemanticWarning_Set( warning, s );
651	} // if
652	break;
653	case 'D': // ignore -Dxxx, forwarded by cpp, hidden
654	break;
655	case '?': // unknown option
656	if ( optopt ) { // short option ?
657	cout << "Unknown option -" << (char)optopt << endl;
658	} else {
659	cout << "Unknown option " << argv[optind - 1] << endl;
660	} // if
661	goto Default;
662	case ':': // missing option
663	if ( optopt ) { // short option ?
664	cout << "Missing option for -" << (char)optopt << endl;
665	} else {
666	cout << "Missing option for " << argv[optind - 1] << endl;
667	} // if
668	goto Default;
669	Default:
670	default:
671	usage( argv ); // no return
672	} // switch
673	} // while
674
675	if ( Werror ) {
676	SemanticWarning_WarningAsError();
677	} // if
678	if ( Wsuppress ) {
679	SemanticWarning_SuppressAll();
680	} // if
681	// for ( const auto w : WarningFormats ) {
682	// cout << w.name << ' ' << (int)w.severity << endl;
683	// } // for
684	} // parse_cmdline
685
686	static bool notPrelude( ast::ptr<ast::Decl> & decl ) {
687	return !decl->linkage.is_builtin;
688	}
689
690	static void dump( ast::TranslationUnit && unit, std::ostream & out ) {
691	// May filter out all prelude declarations.
692	if ( genproto ) {
693	std::list<ast::ptr<ast::Decl>> decls;
694	std::copy_if( unit.decls.begin(), unit.decls.end(),
695	std::back_inserter( decls ), notPrelude );
696	decls.swap( unit.decls );
697	}
698
699	// May print as full dump or as code generation.
700	if ( codegenp ) {
701	CodeGen::generate( unit, out, !genproto, prettycodegenp, false, false, false );
702	} else {
703	ast::printAll( out, unit.decls );
704	}
705	}
706
707	// Local Variables: //
708	// tab-width: 4 //
709	// mode: c++ //
710	// compile-command: "make install" //
711	// End: //

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