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