1 | /* Provide a call-back mechanism for handling error output. |
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2 | Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. |
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3 | Contributed by Jason Merrill (jason@cygnus.com) |
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4 | |
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5 | This file is part of GNU CC. |
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6 | |
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7 | GNU CC is free software; you can redistribute it and/or modify |
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8 | it under the terms of the GNU General Public License as published by |
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9 | the Free Software Foundation; either version 2, or (at your option) |
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10 | any later version. |
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11 | |
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12 | GNU CC is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | GNU General Public License for more details. |
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16 | |
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17 | You should have received a copy of the GNU General Public License |
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18 | along with GNU CC; see the file COPYING. If not, write to |
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19 | the Free Software Foundation, 59 Temple Place - Suite 330, |
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20 | Boston, MA 02111-1307, USA. */ |
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21 | |
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22 | #include "config.h" |
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23 | #include "tree.h" |
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24 | #include <ctype.h> |
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25 | |
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26 | /* cp_printer is the type of a function which converts an argument into |
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27 | a string for digestion by printf. The cp_printer function should deal |
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28 | with all memory management; the functions in this file will not free |
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29 | the char*s returned. See error.c for an example use of this code. */ |
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30 | |
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31 | typedef char* cp_printer PROTO((HOST_WIDE_INT, int)); |
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32 | extern cp_printer * cp_printers[256]; |
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33 | |
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34 | /* Whether or not we should try to be quiet for errors and warnings; this is |
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35 | used to avoid being too talkative about problems with tentative choices |
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36 | when we're computing the conversion costs for a method call. */ |
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37 | int cp_silent = 0; |
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38 | |
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39 | typedef void errorfn (); /* deliberately vague */ |
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40 | |
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41 | extern char* cp_file_of PROTO((tree)); |
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42 | extern int cp_line_of PROTO((tree)); |
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43 | |
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44 | #define STRDUP(f) (ap = (char *) alloca (strlen (f) +1), strcpy (ap, (f)), ap) |
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45 | |
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46 | #define NARGS 4 |
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47 | #define arglist a1, a2, a3, a4 |
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48 | #define arglist_dcl HOST_WIDE_INT a1, a2, a3, a4; |
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49 | #define ARGSINIT args[0] = a1; args[1] = a2; args[2] = a3; args[3] = a4; |
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50 | #define ARGSLIST args[0], args[1], args[2], args[3] |
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51 | |
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52 | static void |
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53 | cp_thing (errfn, atarg1, format, arglist) |
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54 | errorfn *errfn; |
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55 | int atarg1; |
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56 | char *format; |
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57 | arglist_dcl |
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58 | { |
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59 | char *fmt; |
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60 | char *f; |
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61 | char *ap; |
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62 | int arg; |
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63 | HOST_WIDE_INT atarg = atarg1 ? a1 : 0; |
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64 | HOST_WIDE_INT args[NARGS]; |
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65 | ARGSINIT |
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66 | |
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67 | fmt = STRDUP(format); |
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68 | |
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69 | for (f = fmt, arg = 0; *f; ++f) |
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70 | { |
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71 | cp_printer * function; |
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72 | int alternate; |
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73 | int maybe_here; |
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74 | |
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75 | /* ignore text */ |
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76 | if (*f != '%') continue; |
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77 | |
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78 | ++f; |
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79 | |
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80 | alternate = 0; |
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81 | maybe_here = 0; |
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82 | |
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83 | /* ignore most flags */ |
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84 | while (*f == ' ' || *f == '-' || *f == '+' || *f == '#') |
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85 | { |
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86 | if (*f == '+') |
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87 | maybe_here = 1; |
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88 | else if (*f == '#') |
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89 | alternate = 1; |
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90 | ++f; |
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91 | } |
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92 | |
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93 | /* ignore field width */ |
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94 | if (*f == '*') |
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95 | { |
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96 | ++f; |
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97 | ++arg; |
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98 | } |
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99 | else |
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100 | while (isdigit (*f)) |
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101 | ++f; |
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102 | |
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103 | /* ignore precision */ |
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104 | if (*f == '.') |
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105 | { |
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106 | ++f; |
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107 | if (*f == '*') |
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108 | { |
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109 | ++f; |
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110 | ++arg; |
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111 | } |
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112 | else |
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113 | while (isdigit (*f)) |
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114 | ++f; |
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115 | } |
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116 | |
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117 | /* ignore "long" */ |
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118 | if (*f == 'l') |
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119 | ++f; |
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120 | |
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121 | function = cp_printers[(int)*f]; |
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122 | |
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123 | if (function) |
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124 | { |
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125 | char *p; |
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126 | |
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127 | if (arg >= NARGS) abort (); |
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128 | |
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129 | if (maybe_here && atarg1) |
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130 | atarg = args[arg]; |
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131 | |
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132 | /* Must use a temporary to avoid calling *function twice */ |
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133 | p = (*function) (args[arg], alternate); |
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134 | args[arg] = (HOST_WIDE_INT) STRDUP(p); |
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135 | *f = 's'; |
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136 | } |
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137 | |
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138 | ++arg; /* Assume valid format string */ |
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139 | |
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140 | } |
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141 | |
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142 | if (atarg) |
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143 | { |
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144 | char *file = cp_file_of ((tree) atarg); |
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145 | int line = cp_line_of ((tree) atarg); |
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146 | (*errfn) (file, line, fmt, ARGSLIST); |
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147 | } |
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148 | else |
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149 | (*errfn) (fmt, ARGSLIST); |
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150 | |
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151 | } |
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152 | |
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153 | void |
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154 | cp_error (format, arglist) |
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155 | char *format; |
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156 | arglist_dcl |
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157 | { |
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158 | extern errorfn error; |
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159 | if (! cp_silent) |
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160 | cp_thing (error, 0, format, arglist); |
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161 | } |
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162 | |
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163 | void |
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164 | cp_warning (format, arglist) |
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165 | char *format; |
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166 | arglist_dcl |
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167 | { |
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168 | extern errorfn warning; |
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169 | if (! cp_silent) |
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170 | cp_thing (warning, 0, format, arglist); |
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171 | } |
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172 | |
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173 | void |
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174 | cp_pedwarn (format, arglist) |
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175 | char *format; |
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176 | arglist_dcl |
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177 | { |
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178 | extern errorfn pedwarn; |
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179 | if (! cp_silent) |
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180 | cp_thing (pedwarn, 0, format, arglist); |
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181 | } |
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182 | |
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183 | void |
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184 | cp_compiler_error (format, arglist) |
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185 | char *format; |
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186 | arglist_dcl |
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187 | { |
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188 | extern errorfn compiler_error; |
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189 | if (! cp_silent) |
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190 | cp_thing (compiler_error, 0, format, arglist); |
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191 | } |
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192 | |
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193 | void |
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194 | cp_sprintf (format, arglist) |
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195 | char *format; |
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196 | arglist_dcl |
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197 | { |
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198 | extern errorfn sprintf; |
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199 | cp_thing (sprintf, 0, format, arglist); |
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200 | } |
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201 | |
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202 | void |
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203 | cp_error_at (format, arglist) |
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204 | char *format; |
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205 | arglist_dcl |
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206 | { |
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207 | extern errorfn error_with_file_and_line; |
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208 | if (! cp_silent) |
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209 | cp_thing (error_with_file_and_line, 1, format, arglist); |
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210 | } |
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211 | |
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212 | void |
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213 | cp_warning_at (format, arglist) |
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214 | char *format; |
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215 | arglist_dcl |
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216 | { |
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217 | extern errorfn warning_with_file_and_line; |
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218 | if (! cp_silent) |
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219 | cp_thing (warning_with_file_and_line, 1, format, arglist); |
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220 | } |
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221 | |
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222 | void |
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223 | cp_pedwarn_at (format, arglist) |
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224 | char *format; |
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225 | arglist_dcl |
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226 | { |
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227 | extern errorfn pedwarn_with_file_and_line; |
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228 | if (! cp_silent) |
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229 | cp_thing (pedwarn_with_file_and_line, 1, format, arglist); |
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230 | } |
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