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