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source: src/main.cc @ 8780e30

ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsdeferred_resndemanglerenumforall-pointer-decayjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newwith_gc

Last change on this file since 8780e30 was f0121d7, checked in by Rob Schluntz <rschlunt@…>, 8 years ago
refactor genCtorInit, generate ConstructorInit? for UniqueExpr?
Property mode set to `100644`
File size: 13.4 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 : Richard C. Bilson
10	// Created On : Fri May 15 23:12:02 2015
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Mon Aug 29 17:34:39 2016
13	// Update Count : 426
14	//
15
16	#include <iostream>
17	#include <fstream>
18	#include <signal.h> // signal
19	#include <getopt.h> // getopt
20	#include <execinfo.h> // backtrace, backtrace_symbols_fd
21	#include <cxxabi.h> // __cxa_demangle
22
23	using namespace std;
24
25	#include "Parser/lex.h"
26	#include "Parser/parser.h"
27	#include "Parser/TypedefTable.h"
28	#include "GenPoly/Lvalue.h"
29	#include "GenPoly/Specialize.h"
30	#include "GenPoly/Box.h"
31	#include "GenPoly/CopyParams.h"
32	#include "GenPoly/InstantiateGeneric.h"
33	#include "CodeGen/Generate.h"
34	#include "CodeGen/FixNames.h"
35	#include "ControlStruct/Mutate.h"
36	#include "SymTab/Validate.h"
37	#include "ResolvExpr/AlternativePrinter.h"
38	#include "ResolvExpr/Resolver.h"
39	#include "MakeLibCfa.h"
40	#include "InitTweak/GenInit.h"
41	#include "InitTweak/FixInit.h"
42	#include "Common/UnimplementedError.h"
43	#include "../config.h"
44	#include "Tuples/Tuples.h"
45
46	using namespace std;
47
48	#define OPTPRINT(x) if ( errorp ) cerr << x << endl;
49
50
51	LinkageSpec::Spec linkage = LinkageSpec::Cforall;
52	TypedefTable typedefTable;
53	DeclarationNode * parseTree = nullptr; // program parse tree
54
55	extern int yydebug; // set for -g flag (Grammar)
56	bool
57	astp = false,
58	bresolvep = false,
59	bboxp = false,
60	ctorinitp = false,
61	exprp = false,
62	expraltp = false,
63	libcfap = false,
64	nopreludep = false,
65	noprotop = false,
66	parsep = false,
67	resolvep = false, // used in AlternativeFinder
68	symtabp = false,
69	treep = false,
70	validp = false,
71	errorp = false,
72	codegenp = false;
73
74	static void parse_cmdline( int argc, char argv[], const char & filename );
75	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false );
76	static void dump( list< Declaration * > & translationUnit, ostream & out = cout );
77
78	void backtrace( int start ) { // skip first N stack frames
79	enum { Frames = 50 };
80	void * array[Frames];
81	int size = backtrace( array, Frames );
82	char ** messages = backtrace_symbols( array, size );
83
84	// skip last 2 stack frames after main
85	for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {
86	char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr;
87	for ( char p = messages[i]; p; ++p ) { // find parantheses and +offset
88	if (*p == '(') {
89	mangled_name = p;
90	} else if (*p == '+') {
91	offset_begin = p;
92	} else if (*p == ')') {
93	offset_end = p;
94	break;
95	} // if
96	} // for
97
98	// if line contains symbol, attempt to demangle
99	int frameNo = i - start;
100	if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) {
101	*mangled_name++ = '\0';
102	*offset_begin++ = '\0';
103	*offset_end++ = '\0';
104
105	int status, frameNo = i - start;
106	char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status );
107	if ( status == 0 ) { // demangling successful ?
108	cerr << "(" << frameNo << ") " << messages[i] << " : "
109	<< real_name << "+" << offset_begin << offset_end << endl;
110
111	} else { // otherwise, output mangled name
112	cerr << "(" << frameNo << ") " << messages[i] << " : "
113	<< mangled_name << "+" << offset_begin << offset_end << endl;
114	} // if
115	free( real_name );
116	} else { // otherwise, print the whole line
117	cerr << "(" << frameNo << ") " << messages[i] << endl;
118	} // if
119	} // for
120
121	free( messages );
122	} // backtrace
123
124	void sigSegvBusHandler( int sig_num ) {
125	cerr << "CFA runtime error program cfa-cpp terminated with "
126	<< (sig_num == SIGSEGV ? "segment fault" : "bus error")
127	<< " backtrace:" << endl;
128	backtrace( 2 ); // skip first 2 stack frames
129	exit( EXIT_FAILURE );
130	} // sigSegvBusHandler
131
132	void sigAbortHandler( int sig_num ) {
133	backtrace( 6 ); // skip first 6 stack frames
134	signal( SIGABRT, SIG_DFL); // reset default signal handler
135	raise( SIGABRT ); // reraise SIGABRT
136	} // sigAbortHandler
137
138
139	int main( int argc, char * argv[] ) {
140	FILE * input; // use FILE rather than istream because yyin is FILE
141	ostream *output = & cout;
142	const char *filename = nullptr;
143	list< Declaration * > translationUnit;
144
145	signal( SIGSEGV, sigSegvBusHandler );
146	signal( SIGBUS, sigSegvBusHandler );
147	signal( SIGABRT, sigAbortHandler );
148
149	parse_cmdline( argc, argv, filename ); // process command-line arguments
150
151	try {
152	// choose to read the program from a file or stdin
153	if ( optind < argc ) { // any commands after the flags ? => input file name
154	input = fopen( argv[ optind ], "r" );
155	assertf( input, "cannot open %s\n", argv[ optind ] );
156	// if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to)
157	if ( filename == nullptr ) filename = argv[ optind ];
158	// prelude filename comes in differently
159	if ( libcfap ) filename = "prelude.cf";
160	optind += 1;
161	} else { // no input file name
162	input = stdin;
163	// if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass
164	// a fake name along
165	if ( filename == nullptr ) filename = "stdin";
166	} // if
167
168	if ( optind < argc ) { // any commands after the flags and input file ? => output file name
169	output = new ofstream( argv[ optind ] );
170	} // if
171
172	// read in the builtins, extras, and the prelude
173	if ( ! nopreludep ) { // include gcc builtins
174	// -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here.
175	FILE * builtins = fopen( libcfap \| treep ? "builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" );
176	assertf( builtins, "cannot open builtins.cf\n" );
177	parse( builtins, LinkageSpec::Compiler );
178
179	// read the extra prelude in, if not generating the cfa library
180	FILE * extras = fopen( libcfap \| treep ? "extras.cf" : CFA_LIBDIR "/extras.cf", "r" );
181	assertf( extras, "cannot open extras.cf\n" );
182	parse( extras, LinkageSpec::C );
183
184	if ( ! libcfap ) {
185	// read the prelude in, if not generating the cfa library
186	FILE * prelude = fopen( treep ? "prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" );
187	assertf( prelude, "cannot open prelude.cf\n" );
188	parse( prelude, LinkageSpec::Intrinsic );
189	} // if
190	} // if
191
192	parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug );
193
194	if ( parsep ) {
195	parseTree->printList( cout );
196	delete parseTree;
197	return 0;
198	} // if
199
200	buildList( parseTree, translationUnit );
201	delete parseTree;
202	parseTree = nullptr;
203
204	if ( astp ) {
205	dump( translationUnit );
206	return 0;
207	} // if
208
209	// add the assignment statement after the initialization of a type parameter
210	OPTPRINT( "validate" )
211	SymTab::validate( translationUnit, symtabp );
212	if ( symtabp ) {
213	deleteAll( translationUnit );
214	return 0;
215	} // if
216
217	if ( expraltp ) {
218	ResolvExpr::AlternativePrinter printer( cout );
219	acceptAll( translationUnit, printer );
220	return 0;
221	} // if
222
223	if ( validp ) {
224	dump( translationUnit );
225	return 0;
226	} // if
227
228	OPTPRINT( "mutate" )
229	ControlStruct::mutate( translationUnit );
230	OPTPRINT( "fixNames" )
231	CodeGen::fixNames( translationUnit );
232	OPTPRINT( "tweakInit" )
233	InitTweak::genInit( translationUnit );
234	OPTPRINT( "expandMemberTuples" );
235	Tuples::expandMemberTuples( translationUnit );
236	if ( libcfap ) {
237	// generate the bodies of cfa library functions
238	LibCfa::makeLibCfa( translationUnit );
239	} // if
240
241	if ( bresolvep ) {
242	dump( translationUnit );
243	return 0;
244	} // if
245
246	OPTPRINT( "resolve" )
247	ResolvExpr::resolve( translationUnit );
248	if ( exprp ) {
249	dump( translationUnit );
250	return 0;
251	} // if
252
253	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
254	Tuples::expandUniqueExpr( translationUnit );
255
256	// fix ObjectDecl - replaces ConstructorInit nodes
257	OPTPRINT( "fixInit" )
258	InitTweak::fix( translationUnit, filename, libcfap \|\| treep );
259	if ( ctorinitp ) {
260	dump ( translationUnit );
261	return 0;
262	} // if
263
264	OPTPRINT("instantiateGenerics")
265	GenPoly::instantiateGeneric( translationUnit );
266	OPTPRINT( "copyParams" );
267	GenPoly::copyParams( translationUnit );
268	OPTPRINT( "convertSpecializations" )
269	GenPoly::convertSpecializations( translationUnit );
270	OPTPRINT( "convertLvalue" )
271	GenPoly::convertLvalue( translationUnit );
272
273	if ( bboxp ) {
274	dump( translationUnit );
275	return 0;
276	} // if
277	OPTPRINT( "box" )
278	GenPoly::box( translationUnit );
279	OPTPRINT( "expandTuples" ); // xxx - is this the right place for this?
280	Tuples::expandTuples( translationUnit );
281
282	// print tree right before code generation
283	if ( codegenp ) {
284	dump( translationUnit );
285	return 0;
286	} // if
287
288	CodeGen::generate( translationUnit, *output, ! noprotop );
289
290	if ( output != &cout ) {
291	delete output;
292	} // if
293	} catch ( SemanticError &e ) {
294	if ( errorp ) {
295	cerr << "---AST at error:---" << endl;
296	dump( translationUnit, cerr );
297	cerr << endl << "---End of AST, begin error message:---\n" << endl;
298	} // if
299	e.print( cerr );
300	if ( output != &cout ) {
301	delete output;
302	} // if
303	return 1;
304	} catch ( UnimplementedError &e ) {
305	cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl;
306	if ( output != &cout ) {
307	delete output;
308	} // if
309	return 1;
310	} catch ( CompilerError &e ) {
311	cerr << "Compiler Error: " << e.get_what() << endl;
312	cerr << "(please report bugs to " << endl;
313	if ( output != &cout ) {
314	delete output;
315	} // if
316	return 1;
317	} // try
318
319	deleteAll( translationUnit );
320	return 0;
321	} // main
322
323	void parse_cmdline( int argc, char * argv[], const char *& filename ) {
324	enum { Ast, Bbox, Bresolver, CtorInitFix, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, Validate, };
325
326	static struct option long_opts[] = {
327	{ "ast", no_argument, 0, Ast },
328	{ "before-box", no_argument, 0, Bbox },
329	{ "before-resolver", no_argument, 0, Bresolver },
330	{ "ctorinitfix", no_argument, 0, CtorInitFix },
331	{ "expr", no_argument, 0, Expr },
332	{ "expralt", no_argument, 0, ExprAlt },
333	{ "grammar", no_argument, 0, Grammar },
334	{ "libcfa", no_argument, 0, LibCFA },
335	{ "no-preamble", no_argument, 0, Nopreamble },
336	{ "parse", no_argument, 0, Parse },
337	{ "no-prototypes", no_argument, 0, Prototypes },
338	{ "resolver", no_argument, 0, Resolver },
339	{ "symbol", no_argument, 0, Symbol },
340	{ "tree", no_argument, 0, Tree },
341	{ "validate", no_argument, 0, Validate },
342	{ 0, 0, 0, 0 }
343	}; // long_opts
344	int long_index;
345
346	opterr = 0; // (global) prevent getopt from printing error messages
347
348	int c;
349	while ( (c = getopt_long( argc, argv, "abBcefglnpqrstvyzD:F:", long_opts, &long_index )) != -1 ) {
350	switch ( c ) {
351	case Ast:
352	case 'a': // dump AST
353	astp = true;
354	break;
355	case Bresolver:
356	case 'b': // print before resolver steps
357	bresolvep = true;
358	break;
359	case 'B': // print before resolver steps
360	bboxp = true;
361	break;
362	case CtorInitFix:
363	case 'c':
364	ctorinitp = true;
365	break;
366	case Expr:
367	case 'e': // dump AST after expression analysis
368	exprp = true;
369	break;
370	case ExprAlt:
371	case 'f': // print alternatives for expressions
372	expraltp = true;
373	break;
374	case Grammar:
375	case 'g': // bison debugging info (grammar rules)
376	yydebug = true;
377	break;
378	case LibCFA:
379	case 'l': // generate libcfa.c
380	libcfap = true;
381	break;
382	case Nopreamble:
383	case 'n': // do not read preamble
384	nopreludep = true;
385	break;
386	case Prototypes:
387	case 'p': // generate prototypes for preamble functions
388	noprotop = true;
389	break;
390	case Parse:
391	case 'q': // dump parse tree
392	parsep = true;
393	break;
394	case Resolver:
395	case 'r': // print resolver steps
396	resolvep = true;
397	break;
398	case Symbol:
399	case 's': // print symbol table events
400	symtabp = true;
401	break;
402	case Tree:
403	case 't': // build in tree
404	treep = true;
405	break;
406	case 'v': // dump AST after decl validation pass
407	validp = true;
408	break;
409	case 'y':
410	errorp = true;
411	break;
412	case 'z':
413	codegenp = true;
414	break;
415	case 'D': // ignore -Dxxx
416	break;
417	case 'F': // source file-name without suffix
418	filename = optarg;
419	break;
420	case '?':
421	assertf( false, "Unknown option: '%c'\n", (char)optopt );
422	default:
423	abort();
424	} // switch
425	} // while
426	} // parse_cmdline
427
428	static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) {
429	extern int yyparse( void );
430	extern FILE * yyin;
431	extern int yylineno;
432
433	::linkage = linkage; // set globals
434	yyin = input;
435	yylineno = 1;
436	typedefTable.enterScope();
437	int parseStatus = yyparse();
438
439	fclose( input );
440	if ( shouldExit \|\| parseStatus != 0 ) {
441	exit( parseStatus );
442	} // if
443	} // parse
444
445	static bool notPrelude( Declaration * decl ) {
446	return ! LinkageSpec::isBuiltin( decl->get_linkage() );
447	} // notPrelude
448
449	static void dump( list< Declaration * > & translationUnit, ostream & out ) {
450	list< Declaration * > decls;
451
452	if ( noprotop ) {
453	filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude );
454	} else {
455	decls = translationUnit;
456	} // if
457
458	printAll( decls, out );
459	deleteAll( translationUnit );
460	} // dump
461
462	// Local Variables: //
463	// tab-width: 4 //
464	// mode: c++ //
465	// compile-command: "make install" //
466	// End: //

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