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1 module dmd.VersionCondition;
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2
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3 import dmd.DVCondition;
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4 import dmd.Loc;
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5 import dmd.Module;
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6 import dmd.Scope;
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7 import dmd.ScopeDsymbol;
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8 import dmd.OutBuffer;
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9 import dmd.HdrGenState;
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10 import dmd.Identifier;
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11 import dmd.Global;
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12 import dmd.String;
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13 import dmd.Util : error;
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14
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15 import std.string : startsWith;
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16
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17 // for findCondition
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18 import dmd.Array;
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19 import core.stdc.string;
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20
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21 import std.stdio;
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22
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23 bool findCondition(Array ids, Identifier ident)
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24 {
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25 if (ids !is null) {
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26 foreach (i; 0..ids.dim)
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27 {
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28 string id = (cast(String)ids.data[i]).str;
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29 if (id == ident.toChars()) {
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30 return true;
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31 }
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32 }
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33 }
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34
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35 return false;
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36 }
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37
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38 class VersionCondition : DVCondition
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39 {
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40 static void setGlobalLevel(uint level)
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41 {
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42 global.params.versionlevel = level;
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43 }
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44
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45 static void checkPredefined(Loc loc, string ident)
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46 {
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47 version (DMDV2) {
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48 static string[] reserved = [
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49 "DigitalMars", "X86", "X86_64",
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50 "Windows", "Win32", "Win64",
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51 "linux",
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52 /* Although Posix is predefined by D1, disallowing its
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53 * redefinition breaks makefiles and older builds.
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54 */
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55 "Posix",
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56 "D_NET",
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57 "OSX", "FreeBSD",
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58 "Solaris",
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59 "LittleEndian", "BigEndian",
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60 "all",
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61 "none",
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62 ];
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63 } else {
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64 static string[] reserved = [
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65 "DigitalMars", "X86", "X86_64",
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66 "Windows", "Win32", "Win64",
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67 "linux",
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68 "OSX", "FreeBSD",
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69 "Solaris",
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70 "LittleEndian", "BigEndian",
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71 "all",
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72 "none",
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73 ];
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74 }
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75 foreach (reservedIdent; reserved)
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76 {
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77 if (ident == reservedIdent)
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78 goto Lerror;
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79 }
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80
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81 if (ident.startsWith("D_")) {
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82 goto Lerror;
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83 }
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84
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85 return;
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86
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87 Lerror:
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88 error(loc, "version identifier '%s' is reserved and cannot be set", ident);
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89 }
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90
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91 static void addGlobalIdent(string ident)
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92 {
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93 checkPredefined(Loc(0), ident);
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94 addPredefinedGlobalIdent(ident);
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95 }
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96
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97 static void addPredefinedGlobalIdent(string ident)
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98 {
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99 global.params.versionids.push(cast(void*)new String(ident)); ///
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100 }
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101
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102 this(Module mod, uint level, Identifier ident)
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103 {
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104 super(mod, level, ident);
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105 }
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106
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72
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107 override final bool include(Scope sc, ScopeDsymbol s)
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108 {
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109 //printf("VersionCondition::include() level = %d, versionlevel = %d\n", level, global.params.versionlevel);
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110 //if (ident) printf("\tident = '%s'\n", ident->toChars());
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111 if (inc == 0) {
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112 inc = 2;
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113 if (ident !is null) {
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114 if (findCondition(mod.versionids, ident)) {
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115 inc = 1;
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116 } else if (findCondition(global.params.versionids, ident)) {
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117 inc = 1;
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118 } else {
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119 if (!mod.versionidsNot) {
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120 mod.versionidsNot = new Array();
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121 }
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122 mod.versionidsNot.push(cast(void*)new String(ident.toChars())); //
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123 }
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124 } else if (level <= global.params.versionlevel || level <= mod.versionlevel) {
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125 inc = 1;
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126 }
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127 }
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128
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129 return (inc == 1);
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130 }
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131
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72
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132 override final void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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0
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133 {
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134 if (ident !is null) {
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135 buf.printf("version (%s)", ident.toChars());
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136 } else {
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137 buf.printf("version (%u)", level);
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138 }
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139 }
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72
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140 }
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