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