| 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // main.cc -- |
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| 8 | // |
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| 9 | // Author : Richard C. Bilson |
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| 10 | // Created On : Fri May 15 23:12:02 2015 |
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| 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Wed Dec 14 14:35:54 2016 |
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| 13 | // Update Count : 436 |
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| 14 | // |
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| 15 | |
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| 16 | #include <memory> |
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| 17 | #include <iostream> |
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| 18 | #include <fstream> |
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| 19 | #include <signal.h> // signal |
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| 20 | #include <getopt.h> // getopt |
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| 21 | #include <execinfo.h> // backtrace, backtrace_symbols |
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| 22 | #include <cxxabi.h> // __cxa_demangle |
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| 23 | #include <cstring> // index |
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| 24 | |
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| 25 | using namespace std; |
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| 26 | |
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| 27 | #include "Parser/lex.h" |
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| 28 | #include "Parser/parser.h" |
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| 29 | #include "Parser/TypedefTable.h" |
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| 30 | #include "GenPoly/Lvalue.h" |
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| 31 | #include "GenPoly/Specialize.h" |
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| 32 | #include "GenPoly/Box.h" |
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| 33 | #include "GenPoly/CopyParams.h" |
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| 34 | #include "GenPoly/InstantiateGeneric.h" |
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| 35 | #include "CodeGen/Generate.h" |
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| 36 | #include "CodeGen/FixNames.h" |
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| 37 | #include "ControlStruct/Mutate.h" |
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| 38 | #include "SymTab/Validate.h" |
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| 39 | #include "ResolvExpr/AlternativePrinter.h" |
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| 40 | #include "ResolvExpr/Resolver.h" |
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| 41 | #include "MakeLibCfa.h" |
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| 42 | #include "InitTweak/GenInit.h" |
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| 43 | #include "InitTweak/FixInit.h" |
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| 44 | #include "Common/UnimplementedError.h" |
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| 45 | #include "../config.h" |
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| 46 | #include "Tuples/Tuples.h" |
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| 47 | |
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| 48 | using namespace std; |
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| 49 | |
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| 50 | #define OPTPRINT(x) if ( errorp ) cerr << x << endl; |
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| 51 | |
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| 52 | |
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| 53 | LinkageSpec::Spec linkage = LinkageSpec::Cforall; |
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| 54 | TypedefTable typedefTable; |
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| 55 | DeclarationNode * parseTree = nullptr; // program parse tree |
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| 56 | |
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| 57 | extern int yydebug; // set for -g flag (Grammar) |
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| 58 | bool |
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| 59 | astp = false, |
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| 60 | bresolvep = false, |
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| 61 | bboxp = false, |
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| 62 | ctorinitp = false, |
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| 63 | exprp = false, |
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| 64 | expraltp = false, |
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| 65 | libcfap = false, |
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| 66 | nopreludep = false, |
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| 67 | noprotop = false, |
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| 68 | nomainp = false, |
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| 69 | parsep = false, |
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| 70 | resolvep = false, // used in AlternativeFinder |
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| 71 | symtabp = false, |
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| 72 | treep = false, |
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| 73 | tuplep = false, |
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| 74 | validp = false, |
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| 75 | errorp = false, |
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| 76 | codegenp = false; |
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| 77 | |
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| 78 | static void parse_cmdline( int argc, char *argv[], const char *& filename ); |
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| 79 | static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit = false ); |
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| 80 | static void dump( list< Declaration * > & translationUnit, ostream & out = cout ); |
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| 81 | |
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| 82 | bool translation_unit_nomain = true; |
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| 83 | std::unique_ptr<FunctionDecl> translation_unit_main_signature = nullptr; |
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| 84 | |
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| 85 | static void backtrace( int start ) { // skip first N stack frames |
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| 86 | enum { Frames = 50 }; |
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| 87 | void * array[Frames]; |
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| 88 | int size = ::backtrace( array, Frames ); |
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| 89 | char ** messages = ::backtrace_symbols( array, size ); // does not demangle names |
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| 90 | |
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| 91 | *index( messages[0], '(' ) = '\0'; // find executable name |
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| 92 | cerr << "Stack back trace for: " << messages[0] << endl; |
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| 93 | |
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| 94 | // skip last 2 stack frames after main |
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| 95 | for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) { |
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| 96 | char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr; |
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| 97 | for ( char *p = messages[i]; *p; ++p ) { // find parantheses and +offset |
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| 98 | if ( *p == '(' ) { |
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| 99 | mangled_name = p; |
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| 100 | } else if ( *p == '+' ) { |
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| 101 | offset_begin = p; |
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| 102 | } else if ( *p == ')' ) { |
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| 103 | offset_end = p; |
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| 104 | break; |
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| 105 | } // if |
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| 106 | } // for |
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| 107 | |
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| 108 | // if line contains symbol, attempt to demangle |
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| 109 | int frameNo = i - start; |
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| 110 | if ( mangled_name && offset_begin && offset_end && mangled_name < offset_begin ) { |
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| 111 | *mangled_name++ = '\0'; // delimit strings |
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| 112 | *offset_begin++ = '\0'; |
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| 113 | *offset_end++ = '\0'; |
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| 114 | |
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| 115 | int status; |
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| 116 | char * real_name = __cxxabiv1::__cxa_demangle( mangled_name, 0, 0, &status ); |
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| 117 | // bug in __cxa_demangle for single-character lower-case non-mangled names |
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| 118 | if ( status == 0 ) { // demangling successful ? |
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| 119 | cerr << "(" << frameNo << ") " << messages[i] << " : " |
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| 120 | << real_name << "+" << offset_begin << offset_end << endl; |
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| 121 | } else { // otherwise, output mangled name |
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| 122 | cerr << "(" << frameNo << ") " << messages[i] << " : " |
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| 123 | << mangled_name << "(/*unknown*/)+" << offset_begin << offset_end << endl; |
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| 124 | } // if |
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| 125 | |
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| 126 | free( real_name ); |
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| 127 | } else { // otherwise, print the whole line |
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| 128 | cerr << "(" << frameNo << ") " << messages[i] << endl; |
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| 129 | } // if |
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| 130 | } // for |
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| 131 | |
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| 132 | free( messages ); |
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| 133 | } // backtrace |
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| 134 | |
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| 135 | void sigSegvBusHandler( int sig_num ) { |
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| 136 | cerr << "*CFA runtime error* program cfa-cpp terminated with " |
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| 137 | << (sig_num == SIGSEGV ? "segment fault" : "bus error") |
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| 138 | << "." << endl; |
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| 139 | backtrace( 2 ); // skip first 2 stack frames |
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| 140 | exit( EXIT_FAILURE ); |
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| 141 | } // sigSegvBusHandler |
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| 142 | |
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| 143 | void sigAbortHandler( int sig_num ) { |
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| 144 | backtrace( 6 ); // skip first 6 stack frames |
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| 145 | signal( SIGABRT, SIG_DFL); // reset default signal handler |
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| 146 | raise( SIGABRT ); // reraise SIGABRT |
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| 147 | } // sigAbortHandler |
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| 148 | |
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| 149 | |
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| 150 | int main( int argc, char * argv[] ) { |
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| 151 | FILE * input; // use FILE rather than istream because yyin is FILE |
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| 152 | ostream *output = & cout; |
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| 153 | const char *filename = nullptr; |
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| 154 | list< Declaration * > translationUnit; |
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| 155 | |
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| 156 | signal( SIGSEGV, sigSegvBusHandler ); |
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| 157 | signal( SIGBUS, sigSegvBusHandler ); |
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| 158 | signal( SIGABRT, sigAbortHandler ); |
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| 159 | |
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| 160 | parse_cmdline( argc, argv, filename ); // process command-line arguments |
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| 161 | translation_unit_nomain = nomainp; |
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| 162 | |
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| 163 | try { |
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| 164 | // choose to read the program from a file or stdin |
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| 165 | if ( optind < argc ) { // any commands after the flags ? => input file name |
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| 166 | input = fopen( argv[ optind ], "r" ); |
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| 167 | assertf( input, "cannot open %s\n", argv[ optind ] ); |
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| 168 | // if running cfa-cpp directly, might forget to pass -F option (and really shouldn't have to) |
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| 169 | if ( filename == nullptr ) filename = argv[ optind ]; |
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| 170 | // prelude filename comes in differently |
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| 171 | if ( libcfap ) filename = "prelude.cf"; |
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| 172 | optind += 1; |
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| 173 | } else { // no input file name |
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| 174 | input = stdin; |
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| 175 | // if running cfa-cpp directly, might forget to pass -F option. Since this takes from stdin, pass |
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| 176 | // a fake name along |
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| 177 | if ( filename == nullptr ) filename = "stdin"; |
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| 178 | } // if |
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| 179 | |
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| 180 | if ( optind < argc ) { // any commands after the flags and input file ? => output file name |
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| 181 | output = new ofstream( argv[ optind ] ); |
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| 182 | } // if |
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| 183 | |
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| 184 | // read in the builtins, extras, and the prelude |
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| 185 | if ( ! nopreludep ) { // include gcc builtins |
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| 186 | // -l is for initial build ONLY and builtins.cf is not in the lib directory so access it here. |
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| 187 | FILE * builtins = fopen( libcfap | treep ? "../prelude/builtins.cf" : CFA_LIBDIR "/builtins.cf", "r" ); |
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| 188 | assertf( builtins, "cannot open builtins.cf\n" ); |
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| 189 | parse( builtins, LinkageSpec::Compiler ); |
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| 190 | |
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| 191 | // read the extra prelude in, if not generating the cfa library |
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| 192 | FILE * extras = fopen( libcfap | treep ? "../prelude/extras.cf" : CFA_LIBDIR "/extras.cf", "r" ); |
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| 193 | assertf( extras, "cannot open extras.cf\n" ); |
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| 194 | parse( extras, LinkageSpec::C ); |
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| 195 | |
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| 196 | if ( ! libcfap ) { |
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| 197 | // read the prelude in, if not generating the cfa library |
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| 198 | FILE * prelude = fopen( treep ? "../prelude/prelude.cf" : CFA_LIBDIR "/prelude.cf", "r" ); |
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| 199 | assertf( prelude, "cannot open prelude.cf\n" ); |
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| 200 | parse( prelude, LinkageSpec::Intrinsic ); |
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| 201 | } // if |
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| 202 | } // if |
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| 203 | |
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| 204 | parse( input, libcfap ? LinkageSpec::Intrinsic : LinkageSpec::Cforall, yydebug ); |
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| 205 | |
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| 206 | if ( parsep ) { |
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| 207 | parseTree->printList( cout ); |
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| 208 | delete parseTree; |
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| 209 | return 0; |
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| 210 | } // if |
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| 211 | |
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| 212 | buildList( parseTree, translationUnit ); |
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| 213 | delete parseTree; |
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| 214 | parseTree = nullptr; |
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| 215 | |
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| 216 | if ( astp ) { |
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| 217 | dump( translationUnit ); |
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| 218 | return 0; |
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| 219 | } // if |
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| 220 | |
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| 221 | // add the assignment statement after the initialization of a type parameter |
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| 222 | OPTPRINT( "validate" ) |
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| 223 | SymTab::validate( translationUnit, symtabp ); |
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| 224 | if ( symtabp ) { |
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| 225 | deleteAll( translationUnit ); |
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| 226 | return 0; |
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| 227 | } // if |
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| 228 | |
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| 229 | if ( expraltp ) { |
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| 230 | ResolvExpr::AlternativePrinter printer( cout ); |
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| 231 | acceptAll( translationUnit, printer ); |
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| 232 | return 0; |
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| 233 | } // if |
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| 234 | |
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| 235 | if ( validp ) { |
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| 236 | dump( translationUnit ); |
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| 237 | return 0; |
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| 238 | } // if |
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| 239 | |
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| 240 | OPTPRINT( "mutate" ) |
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| 241 | ControlStruct::mutate( translationUnit ); |
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| 242 | OPTPRINT( "fixNames" ) |
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| 243 | CodeGen::fixNames( translationUnit ); |
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| 244 | OPTPRINT( "tweakInit" ) |
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| 245 | InitTweak::genInit( translationUnit ); |
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| 246 | OPTPRINT( "expandMemberTuples" ); |
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| 247 | Tuples::expandMemberTuples( translationUnit ); |
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| 248 | if ( libcfap ) { |
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| 249 | // generate the bodies of cfa library functions |
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| 250 | LibCfa::makeLibCfa( translationUnit ); |
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| 251 | } // if |
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| 252 | |
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| 253 | if ( bresolvep ) { |
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| 254 | dump( translationUnit ); |
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| 255 | return 0; |
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| 256 | } // if |
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| 257 | |
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| 258 | OPTPRINT( "resolve" ) |
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| 259 | ResolvExpr::resolve( translationUnit ); |
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| 260 | if ( exprp ) { |
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| 261 | dump( translationUnit ); |
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| 262 | return 0; |
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| 263 | } // if |
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| 264 | |
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| 265 | // fix ObjectDecl - replaces ConstructorInit nodes |
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| 266 | OPTPRINT( "fixInit" ) |
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| 267 | InitTweak::fix( translationUnit, filename, libcfap || treep ); |
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| 268 | if ( ctorinitp ) { |
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| 269 | dump ( translationUnit ); |
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| 270 | return 0; |
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| 271 | } // if |
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| 272 | |
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| 273 | 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 |
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| 274 | Tuples::expandUniqueExpr( translationUnit ); |
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| 275 | |
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| 276 | OPTPRINT( "convertSpecializations" ) // needs to happen before tuple types are expanded |
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| 277 | GenPoly::convertSpecializations( translationUnit ); |
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| 278 | |
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| 279 | OPTPRINT( "expandTuples" ); // xxx - is this the right place for this? |
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| 280 | Tuples::expandTuples( translationUnit ); |
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| 281 | if ( tuplep ) { |
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| 282 | dump( translationUnit ); |
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| 283 | return 0; |
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| 284 | } |
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| 285 | |
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| 286 | OPTPRINT("instantiateGenerics") |
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| 287 | GenPoly::instantiateGeneric( translationUnit ); |
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| 288 | OPTPRINT( "copyParams" ); |
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| 289 | GenPoly::copyParams( translationUnit ); |
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| 290 | OPTPRINT( "convertLvalue" ) |
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| 291 | GenPoly::convertLvalue( translationUnit ); |
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| 292 | |
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| 293 | if ( bboxp ) { |
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| 294 | dump( translationUnit ); |
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| 295 | return 0; |
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| 296 | } // if |
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| 297 | OPTPRINT( "box" ) |
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| 298 | GenPoly::box( translationUnit ); |
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| 299 | |
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| 300 | // print tree right before code generation |
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| 301 | if ( codegenp ) { |
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| 302 | dump( translationUnit ); |
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| 303 | return 0; |
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| 304 | } // if |
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| 305 | |
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| 306 | CodeGen::generate( translationUnit, *output, ! noprotop ); |
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| 307 | |
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| 308 | if( translation_unit_main_signature ) { |
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| 309 | *output << "int main(int argc, char** argv) { return "; |
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| 310 | |
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| 311 | *output << translation_unit_main_signature->get_scopedMangleName() << "("; |
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| 312 | if(translation_unit_main_signature->get_functionType()->get_parameters().size() != 0){ |
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| 313 | *output << "argc, argv"; |
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| 314 | } |
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| 315 | *output << ");"; |
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| 316 | |
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| 317 | *output << " }\n"; |
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| 318 | } |
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| 319 | |
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| 320 | if ( output != &cout ) { |
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| 321 | delete output; |
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| 322 | } // if |
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| 323 | } catch ( SemanticError &e ) { |
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| 324 | if ( errorp ) { |
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| 325 | cerr << "---AST at error:---" << endl; |
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| 326 | dump( translationUnit, cerr ); |
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| 327 | cerr << endl << "---End of AST, begin error message:---\n" << endl; |
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| 328 | } // if |
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| 329 | e.print( cerr ); |
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| 330 | if ( output != &cout ) { |
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| 331 | delete output; |
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| 332 | } // if |
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| 333 | return 1; |
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| 334 | } catch ( UnimplementedError &e ) { |
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| 335 | cout << "Sorry, " << e.get_what() << " is not currently implemented" << endl; |
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| 336 | if ( output != &cout ) { |
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| 337 | delete output; |
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| 338 | } // if |
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| 339 | return 1; |
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| 340 | } catch ( CompilerError &e ) { |
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| 341 | cerr << "Compiler Error: " << e.get_what() << endl; |
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| 342 | cerr << "(please report bugs to " << endl; |
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| 343 | if ( output != &cout ) { |
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| 344 | delete output; |
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| 345 | } // if |
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| 346 | return 1; |
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| 347 | } // try |
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| 348 | |
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| 349 | deleteAll( translationUnit ); |
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| 350 | return 0; |
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| 351 | } // main |
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| 352 | |
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| 353 | void parse_cmdline( int argc, char * argv[], const char *& filename ) { |
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| 354 | enum { Ast, Bbox, Bresolver, CtorInitFix, Expr, ExprAlt, Grammar, LibCFA, Nopreamble, Parse, Prototypes, Resolver, Symbol, Tree, TupleExpansion, Validate, }; |
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| 355 | |
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| 356 | static struct option long_opts[] = { |
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| 357 | { "ast", no_argument, 0, Ast }, |
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| 358 | { "before-box", no_argument, 0, Bbox }, |
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| 359 | { "before-resolver", no_argument, 0, Bresolver }, |
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| 360 | { "ctorinitfix", no_argument, 0, CtorInitFix }, |
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| 361 | { "expr", no_argument, 0, Expr }, |
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| 362 | { "expralt", no_argument, 0, ExprAlt }, |
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| 363 | { "grammar", no_argument, 0, Grammar }, |
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| 364 | { "libcfa", no_argument, 0, LibCFA }, |
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| 365 | { "no-preamble", no_argument, 0, Nopreamble }, |
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| 366 | { "parse", no_argument, 0, Parse }, |
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| 367 | { "no-prototypes", no_argument, 0, Prototypes }, |
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| 368 | { "resolver", no_argument, 0, Resolver }, |
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| 369 | { "symbol", no_argument, 0, Symbol }, |
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| 370 | { "tree", no_argument, 0, Tree }, |
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| 371 | { "tuple-expansion", no_argument, 0, TupleExpansion }, |
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| 372 | { "validate", no_argument, 0, Validate }, |
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| 373 | { 0, 0, 0, 0 } |
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| 374 | }; // long_opts |
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| 375 | int long_index; |
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| 376 | |
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| 377 | opterr = 0; // (global) prevent getopt from printing error messages |
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| 378 | |
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| 379 | int c; |
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| 380 | while ( (c = getopt_long( argc, argv, "abBcefglmnpqrstTvyzD:F:", long_opts, &long_index )) != -1 ) { |
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| 381 | switch ( c ) { |
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| 382 | case Ast: |
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| 383 | case 'a': // dump AST |
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| 384 | astp = true; |
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| 385 | break; |
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| 386 | case Bresolver: |
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| 387 | case 'b': // print before resolver steps |
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| 388 | bresolvep = true; |
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| 389 | break; |
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| 390 | case 'B': // print before box steps |
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| 391 | bboxp = true; |
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| 392 | break; |
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| 393 | case CtorInitFix: |
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| 394 | case 'c': |
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| 395 | ctorinitp = true; |
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| 396 | break; |
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| 397 | case Expr: |
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| 398 | case 'e': // dump AST after expression analysis |
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| 399 | exprp = true; |
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| 400 | break; |
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| 401 | case ExprAlt: |
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| 402 | case 'f': // print alternatives for expressions |
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| 403 | expraltp = true; |
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| 404 | break; |
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| 405 | case Grammar: |
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| 406 | case 'g': // bison debugging info (grammar rules) |
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| 407 | yydebug = true; |
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| 408 | break; |
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| 409 | case LibCFA: |
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| 410 | case 'l': // generate libcfa.c |
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| 411 | libcfap = true; |
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| 412 | break; |
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| 413 | case Nopreamble: |
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| 414 | case 'n': // do not read preamble |
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| 415 | nopreludep = true; |
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| 416 | break; |
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| 417 | case Prototypes: |
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| 418 | case 'p': // generate prototypes for preamble functions |
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| 419 | noprotop = true; |
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| 420 | break; |
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| 421 | case 'm': // don't replace the main |
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| 422 | nomainp = true; |
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| 423 | break; |
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| 424 | case Parse: |
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| 425 | case 'q': // dump parse tree |
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| 426 | parsep = true; |
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| 427 | break; |
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| 428 | case Resolver: |
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| 429 | case 'r': // print resolver steps |
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| 430 | resolvep = true; |
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| 431 | break; |
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| 432 | case Symbol: |
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| 433 | case 's': // print symbol table events |
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| 434 | symtabp = true; |
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| 435 | break; |
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| 436 | case Tree: |
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| 437 | case 't': // build in tree |
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| 438 | treep = true; |
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| 439 | break; |
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| 440 | case TupleExpansion: |
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| 441 | case 'T': // print after tuple expansion |
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| 442 | tuplep = true; |
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| 443 | break; |
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| 444 | case 'v': // dump AST after decl validation pass |
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| 445 | validp = true; |
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| 446 | break; |
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| 447 | case 'y': |
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| 448 | errorp = true; |
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| 449 | break; |
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| 450 | case 'z': |
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| 451 | codegenp = true; |
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| 452 | break; |
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| 453 | case 'D': // ignore -Dxxx |
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| 454 | break; |
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| 455 | case 'F': // source file-name without suffix |
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| 456 | filename = optarg; |
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| 457 | break; |
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| 458 | case '?': |
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| 459 | assertf( false, "Unknown option: '%c'\n", (char)optopt ); |
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| 460 | default: |
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| 461 | abort(); |
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| 462 | } // switch |
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| 463 | } // while |
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| 464 | } // parse_cmdline |
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| 465 | |
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| 466 | static void parse( FILE * input, LinkageSpec::Spec linkage, bool shouldExit ) { |
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| 467 | extern int yyparse( void ); |
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| 468 | extern FILE * yyin; |
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| 469 | extern int yylineno; |
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| 470 | |
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| 471 | ::linkage = linkage; // set globals |
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| 472 | yyin = input; |
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| 473 | yylineno = 1; |
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| 474 | typedefTable.enterScope(); |
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| 475 | int parseStatus = yyparse(); |
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| 476 | |
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| 477 | fclose( input ); |
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| 478 | if ( shouldExit || parseStatus != 0 ) { |
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| 479 | exit( parseStatus ); |
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| 480 | } // if |
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| 481 | } // parse |
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| 482 | |
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| 483 | static bool notPrelude( Declaration * decl ) { |
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| 484 | return ! LinkageSpec::isBuiltin( decl->get_linkage() ); |
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| 485 | } // notPrelude |
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| 486 | |
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| 487 | static void dump( list< Declaration * > & translationUnit, ostream & out ) { |
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| 488 | list< Declaration * > decls; |
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| 489 | |
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| 490 | if ( noprotop ) { |
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| 491 | filter( translationUnit.begin(), translationUnit.end(), back_inserter( decls ), notPrelude ); |
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| 492 | } else { |
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| 493 | decls = translationUnit; |
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| 494 | } // if |
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| 495 | |
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| 496 | printAll( decls, out ); |
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| 497 | deleteAll( translationUnit ); |
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| 498 | } // dump |
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| 499 | |
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| 500 | // Local Variables: // |
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| 501 | // tab-width: 4 // |
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| 502 | // mode: c++ // |
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| 503 | // compile-command: "make install" // |
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| 504 | // End: // |
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