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 | // SemanticError.cc -- |
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8 | // |
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9 | // Author : Thierry Delisle |
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10 | // Created On : Mon May 18 07:44:20 2015 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Wed May 2 18:13:37 2018 |
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13 | // Update Count : 8 |
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14 | // |
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15 | |
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16 | #include <cstdarg> |
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17 | #include <cstdio> // for fileno, stderr |
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18 | #include <cstring> |
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19 | #include <unistd.h> // for isatty |
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20 | #include <iostream> // for basic_ostream, operator<<, ostream |
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21 | #include <list> // for list, _List_iterator |
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22 | #include <string> // for string, operator<<, operator+, to_string |
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23 | #include <vector> |
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24 | |
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25 | #include "Common/utility.h" // for to_string, CodeLocation (ptr only) |
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26 | #include "SemanticError.h" |
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27 | |
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28 | //----------------------------------------------------------------------------- |
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29 | // Severity Handling |
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30 | std::vector<Severity> & get_severities() { |
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31 | static std::vector<Severity> severities; |
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32 | if(severities.empty()) { |
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33 | severities.reserve((size_t)Warning::NUMBER_OF_WARNINGS); |
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34 | for ( const auto w : WarningFormats ) { |
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35 | severities.push_back( w.default_severity ); |
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36 | } // for |
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37 | } |
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38 | return severities; |
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39 | } |
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40 | |
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41 | void SemanticWarning_SuppressAll() { |
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42 | for( auto & s : get_severities() ) { |
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43 | s = Severity::Suppress; |
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44 | } |
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45 | } |
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46 | |
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47 | void SemanticWarning_EnableAll() { |
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48 | for( auto & s : get_severities() ) { |
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49 | s = Severity::Warn; |
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50 | } |
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51 | } |
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52 | |
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53 | void SemanticWarning_WarningAsError() { |
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54 | for( auto & s : get_severities() ) { |
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55 | if(s == Severity::Warn) s = Severity::Error; |
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56 | } |
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57 | } |
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58 | |
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59 | void SemanticWarning_Set(const char * const name, Severity s) { |
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60 | size_t idx = 0; |
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61 | for ( const auto & w : WarningFormats ) { |
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62 | if ( std::strcmp( name, w.name ) == 0 ) { |
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63 | get_severities()[idx] = s; |
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64 | break; |
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65 | } |
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66 | idx++; |
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67 | } |
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68 | } |
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69 | |
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70 | //----------------------------------------------------------------------------- |
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71 | // Semantic Error |
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72 | SemanticErrorException::SemanticErrorException( CodeLocation location, std::string error ) { |
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73 | append( location, error ); |
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74 | } |
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75 | |
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76 | void SemanticErrorException::append( SemanticErrorException &other ) { |
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77 | errors.splice( errors.end(), other.errors ); |
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78 | } |
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79 | |
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80 | void SemanticErrorException::append( CodeLocation location, const std::string & msg ) { |
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81 | errors.emplace_back( location, msg ); |
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82 | } |
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83 | |
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84 | bool SemanticErrorException::isEmpty() const { |
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85 | return errors.empty(); |
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86 | } |
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87 | |
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88 | void SemanticErrorException::print() { |
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89 | using std::to_string; |
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90 | for( auto err : errors ) { |
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91 | std::cerr << ErrorHelpers::bold() << err.location << ErrorHelpers::error_str() << ErrorHelpers::reset_font() << err.description << std::endl; |
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92 | } |
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93 | } |
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94 | |
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95 | void SemanticError( CodeLocation location, std::string error ) { |
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96 | throw SemanticErrorException(location, error); |
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97 | } |
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98 | |
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99 | namespace { |
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100 | // convert format string and arguments into a single string |
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101 | std::string fmtToString(const char * fmt, va_list ap) { |
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102 | int size = 128; |
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103 | while ( true ) { |
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104 | char buf[size]; |
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105 | va_list args; |
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106 | va_copy( args, ap ); |
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107 | int n = vsnprintf(&buf[0], size, fmt, args); |
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108 | va_end( args ); |
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109 | if ( n < size && n >= 0 ) return buf; |
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110 | size *= 2; |
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111 | } |
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112 | assert( false ); |
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113 | } |
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114 | } |
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115 | |
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116 | void SemanticWarningImpl( CodeLocation location, Warning warning, const char * const fmt, ... ) { |
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117 | Severity severity = get_severities()[(int)warning]; |
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118 | switch(severity) { |
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119 | case Severity::Suppress : |
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120 | break; |
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121 | case Severity::Warn : |
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122 | { |
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123 | va_list args; |
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124 | va_start(args, fmt); |
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125 | std::string msg = fmtToString( fmt, args ); |
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126 | va_end(args); |
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127 | std::cerr << ErrorHelpers::bold() << location << ErrorHelpers::warning_str() << ErrorHelpers::reset_font() << msg << std::endl; |
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128 | } |
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129 | break; |
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130 | case Severity::Error : |
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131 | { |
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132 | va_list args; |
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133 | va_start(args, fmt); |
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134 | std::string msg = fmtToString( fmt, args ); |
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135 | va_end(args); |
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136 | SemanticError(location, msg); |
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137 | } |
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138 | break; |
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139 | case Severity::Critical : |
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140 | assertf(false, "Critical errors not implemented yet"); |
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141 | break; |
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142 | } |
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143 | } |
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144 | |
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145 | //----------------------------------------------------------------------------- |
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146 | // Helpers |
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147 | namespace ErrorHelpers { |
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148 | const std::string & error_str() { |
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149 | static std::string str = isatty( STDERR_FILENO ) ? "\e[31merror:\e[39m " : "error: "; |
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150 | return str; |
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151 | } |
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152 | |
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153 | const std::string & warning_str() { |
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154 | static std::string str = isatty( STDERR_FILENO ) ? "\e[95mwarning:\e[39m " : "warning: "; |
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155 | return str; |
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156 | } |
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157 | |
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158 | const std::string & bold_ttycode() { |
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159 | static std::string str = isatty( STDERR_FILENO ) ? "\e[1m" : ""; |
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160 | return str; |
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161 | } |
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162 | |
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163 | const std::string & reset_font_ttycode() { |
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164 | static std::string str = isatty( STDERR_FILENO ) ? "\e[0m" : ""; |
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165 | return str; |
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166 | } |
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167 | |
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168 | std::string make_bold( const std::string & str ) { |
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169 | return bold_ttycode() + str + reset_font_ttycode(); |
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170 | } |
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171 | |
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172 | std::ostream & operator<<(std::ostream & os, bold) { |
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173 | os << bold_ttycode(); |
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174 | return os; |
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175 | } |
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176 | |
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177 | std::ostream & operator<<(std::ostream & os, reset_font) { |
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178 | os << reset_font_ttycode(); |
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179 | return os; |
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180 | } |
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181 | } |
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182 | |
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183 | // Local Variables: // |
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184 | // tab-width: 4 // |
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185 | // mode: c++ // |
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186 | // compile-command: "make install" // |
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187 | // End: // |
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