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72
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1 module dmd.IntegerExp;
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2
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3 import dmd.Expression;
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4 import dmd.backend.elem;
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5 import dmd.TY;
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6 import dmd.TypeEnum;
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7 import dmd.TypeTypedef;
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8 import dmd.Global;
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9 import dmd.InterState;
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10 import dmd.MATCH;
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11 import dmd.Type;
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12 import dmd.OutBuffer;
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13 import dmd.Loc;
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14 import dmd.Scope;
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15 import dmd.IntRange;
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16 import dmd.IRState;
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17 import dmd.HdrGenState;
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18 import dmd.TOK;
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19 import dmd.Complex;
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20
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21 import dmd.backend.dt_t;
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22 import dmd.backend.Util;
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23
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24 import core.stdc.ctype : isprint;
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25
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0
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26 class IntegerExp : Expression
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27 {
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28 ulong value;
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29
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30 this(Loc loc, ulong value, Type type)
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31 {
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72
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32 super(loc, TOK.TOKint64, IntegerExp.sizeof);
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33
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34 //printf("IntegerExp(value = %lld, type = '%s')\n", value, type ? type.toChars() : "");
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35 if (type && !type.isscalar())
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36 {
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37 //printf("%s, loc = %d\n", toChars(), loc.linnum);
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38 error("integral constant must be scalar type, not %s", type.toChars());
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39 type = Type.terror;
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40 }
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41 this.type = type;
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0
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42 this.value = value;
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43 }
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44
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45 this(ulong value)
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72
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46 {
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0
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47 super(Loc(0), TOK.TOKint64, IntegerExp.sizeof);
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72
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48 this.type = Type.tint32;
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0
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49 this.value = value;
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50 }
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51
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72
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52 override bool equals(Object o)
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0
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53 {
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72
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54 IntegerExp ne;
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55
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56 if (this == o ||
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57 ((cast(Expression)o).op == TOKint64 &&
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58 ((ne = cast(IntegerExp)o), type.toHeadMutable().equals(ne.type.toHeadMutable())) &&
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59 value == ne.value)
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60 )
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61 return 1;
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62
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0
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63 return 0;
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64 }
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65
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72
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66 override Expression semantic(Scope sc)
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0
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67 {
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72
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68 if (!type)
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69 {
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70 // Determine what the type of this number is
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71 ulong number = value;
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72
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73 if (number & 0x8000000000000000)
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74 type = Type.tuns64;
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75 else if (number & 0xFFFFFFFF80000000)
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76 type = Type.tint64;
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77 else
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78 type = Type.tint32;
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79 }
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80 else
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81 { if (!type.deco)
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82 type = type.semantic(loc, sc);
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83 }
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0
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84 return this;
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85 }
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86
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72
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87 override Expression interpret(InterState istate)
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0
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88 {
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72
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89 version (LOG) {
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90 printf("IntegerExp.interpret() %s\n", toChars());
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91 }
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63
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92 return this;
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0
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93 }
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94
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72
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95 override string toChars()
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0
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96 {
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72
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97 static if (true) {
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98 return Expression.toChars();
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99 } else {
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100 static char buffer[value.sizeof * 3 + 1];
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101 int len = sprintf(buffer.ptr, "%jd", value);
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102 return buffer[0..len].idup;
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0
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103 }
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104 }
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105
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72
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106 override void dump(int indent)
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0
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107 {
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108 assert(false);
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109 }
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110
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72
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111 override IntRange getIntRange()
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0
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112 {
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72
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113 IntRange ir;
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114 ir.imin = value & type.sizemask();
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115 ir.imax = ir.imin;
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53
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116 return ir;
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0
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117 }
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118
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72
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119 override ulong toInteger()
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0
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120 {
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72
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121 Type t;
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122
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123 t = type;
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124 while (t)
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125 {
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126 switch (t.ty)
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127 {
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128 case TY.Tbit:
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129 case TY.Tbool: value = (value != 0); break;
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130 case TY.Tint8: value = cast(byte) value; break;
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131 case TY.Tchar:
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132 case TY.Tuns8: value = cast(ubyte) value; break;
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133 case TY.Tint16: value = cast(short) value; break;
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134 case TY.Twchar:
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135 case TY.Tuns16: value = cast(ushort)value; break;
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136 case TY.Tint32: value = cast(int) value; break;
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137 case TY.Tdchar:
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138 case TY.Tuns32: value = cast(uint) value; break;
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139 case TY.Tint64: value = cast(long) value; break;
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140 case TY.Tuns64: value = cast(ulong) value; break;
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141 case TY.Tpointer:
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142 if (PTRSIZE == 4)
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143 value = cast(uint) value;
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144 else if (PTRSIZE == 8)
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145 value = cast(ulong) value;
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146 else
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147 assert(0);
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148 break;
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149
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150 case TY.Tenum:
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151 {
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152 TypeEnum te = cast(TypeEnum)t;
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153 t = te.sym.memtype;
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154 continue;
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155 }
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156
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157 case TY.Ttypedef:
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158 {
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159 TypeTypedef tt = cast(TypeTypedef)t;
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160 t = tt.sym.basetype;
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161 continue;
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162 }
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163
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164 default:
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165 /* This can happen if errors, such as
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166 * the type is painted on like in fromConstInitializer().
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167 */
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168 if (!global.errors)
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169 {
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170 ///type.print();
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171 assert(0);
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172 }
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173 break;
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174 }
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175 break;
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176 }
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0
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177 return value;
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178 }
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179
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72
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180 override real toReal()
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0
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181 {
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72
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182 Type t;
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183
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184 toInteger();
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185 t = type.toBasetype();
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186 if (t.ty == Tuns64)
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187 return cast(real)cast(ulong)value;
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188 else
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0
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189 return cast(real)cast(long)value;
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190 }
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191
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72
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192 override real toImaginary()
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0
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193 {
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194 assert(false);
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195 }
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196
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72
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197 override Complex!(real) toComplex()
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0
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198 {
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199 assert(false);
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200 }
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201
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72
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202 override int isConst()
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0
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203 {
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204 return 1;
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205 }
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206
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72
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207 override bool isBool(bool result)
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0
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208 {
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209 return result ? value != 0 : value == 0;
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210 }
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211
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72
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212 override MATCH implicitConvTo(Type t)
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0
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213 {
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72
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214 static if (false) {
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215 printf("IntegerExp.implicitConvTo(this=%s, type=%s, t=%s)\n",
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216 toChars(), type.toChars(), t.toChars());
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217 }
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218
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219 MATCH m = type.implicitConvTo(t);
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220 if (m >= MATCH.MATCHconst)
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221 return m;
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222
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223 TY ty = type.toBasetype().ty;
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224 TY toty = t.toBasetype().ty;
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225
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226 if (m == MATCH.MATCHnomatch && t.ty == TY.Tenum)
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227 goto Lno;
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228
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229 switch (ty)
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230 {
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231 case TY.Tbit:
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232 case TY.Tbool:
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233 value &= 1;
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234 ty = TY.Tint32;
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235 break;
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236
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237 case TY.Tint8:
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238 value = cast(byte)value;
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239 ty = TY.Tint32;
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240 break;
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241
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242 case TY.Tchar:
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243 case TY.Tuns8:
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244 value &= 0xFF;
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245 ty = TY.Tint32;
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246 break;
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247
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248 case TY.Tint16:
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249 value = cast(short)value;
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250 ty = TY.Tint32;
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251 break;
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252
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253 case TY.Tuns16:
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254 case TY.Twchar:
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255 value &= 0xFFFF;
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256 ty = TY.Tint32;
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257 break;
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258
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259 case TY.Tint32:
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260 value = cast(int)value;
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261 break;
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262
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263 case TY.Tuns32:
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264 case TY.Tdchar:
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265 value &= 0xFFFFFFFF;
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266 ty = TY.Tuns32;
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267 break;
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268
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269 default:
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270 break;
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271 }
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272
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273 // Only allow conversion if no change in value
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274 switch (toty)
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275 {
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276 case TY.Tbit:
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277 case TY.Tbool:
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278 if ((value & 1) != value)
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279 goto Lno;
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280 goto Lyes;
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281
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282 case TY.Tint8:
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283 if (cast(byte)value != value)
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284 goto Lno;
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285 goto Lyes;
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286
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287 case TY.Tchar:
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288 case TY.Tuns8:
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289 //printf("value = %llu %llu\n", (dinteger_t)(unsigned char)value, value);
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290 if (cast(ubyte)value != value)
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291 goto Lno;
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292 goto Lyes;
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293
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294 case TY.Tint16:
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295 if (cast(short)value != value)
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296 goto Lno;
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297 goto Lyes;
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298
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299 case TY.Tuns16:
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300 if (cast(ushort)value != value)
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301 goto Lno;
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302 goto Lyes;
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303
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304 case TY.Tint32:
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305 if (ty == TY.Tuns32) {
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306 ;
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307 }
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308 else if (cast(int)value != value) {
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309 goto Lno;
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310 }
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311 goto Lyes;
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312
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313 case TY.Tuns32:
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314 if (ty == TY.Tint32) {
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315 } else if (cast(uint)value != value) {
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316 goto Lno;
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317 }
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318 goto Lyes;
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319
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320 case TY.Tdchar:
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321 if (value > 0x10FFFF) {
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322 goto Lno;
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323 }
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324 goto Lyes;
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325
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326 case TY.Twchar:
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327 if (cast(ushort)value != value) {
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328 goto Lno;
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329 }
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330 goto Lyes;
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331
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332 case TY.Tfloat32:
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333 {
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334 /*volatile*/ float f; ///
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335 if (type.isunsigned()) {
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336 f = cast(float)value;
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337 if (f != value) {
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338 goto Lno;
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339 }
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340 } else {
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341 f = cast(float)cast(long)value;
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342 if (f != cast(long)value) {
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343 goto Lno;
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344 }
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345 }
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346 goto Lyes;
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347 }
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348
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349 case TY.Tfloat64:
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350 {
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351 /*volatile*/ double f; ///
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352 if (type.isunsigned()) {
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353 f = cast(double)value;
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354 if (f != value)
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355 goto Lno;
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356 } else {
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357 f = cast(double)cast(long)value;
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358 if (f != cast(long)value)
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359 goto Lno;
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360 }
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361 goto Lyes;
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362 }
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363
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364 case TY.Tfloat80:
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365 {
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366 /*volatile*/ real f; ///
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367 if (type.isunsigned()) {
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368 f = cast(real)value;
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369 if (f != value)
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370 goto Lno;
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371 } else {
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372 f = cast(real)cast(long)value;
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373 if (f != cast(long)value)
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374 goto Lno;
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375 }
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376 goto Lyes;
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377 }
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378
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379 case TY.Tpointer:
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380 //printf("type = %s\n", type.toBasetype().toChars());
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381 //printf("t = %s\n", t.toBasetype().toChars());
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382 if (ty == TY.Tpointer && type.toBasetype().nextOf().ty == t.toBasetype().nextOf().ty)
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383 {
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384 /* Allow things like:
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385 * const char* P = cast(char *)3;
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386 * char* q = P;
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387 */
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388 goto Lyes;
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389 }
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390 break;
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391
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392 default:
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393 break; ///
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394 }
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395
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396 return Expression.implicitConvTo(t);
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397
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398 Lyes:
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399 //printf("MATCHconvert\n");
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400 return MATCH.MATCHconvert;
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401
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402 Lno:
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403 //printf("MATCHnomatch\n");
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0
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404 return MATCH.MATCHnomatch;
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405 }
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406
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72
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407 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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0
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408 {
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72
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409 long v = toInteger();
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410
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411 if (type)
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412 {
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413 Type t = type;
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414
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415 L1:
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416 switch (t.ty)
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417 {
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418 case TY.Tenum:
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419 {
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420 TypeEnum te = cast(TypeEnum)t;
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421 buf.printf("cast(%s)", te.sym.toChars());
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422 t = te.sym.memtype;
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423 goto L1;
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424 }
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425
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426 case TY.Ttypedef:
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427 {
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428 TypeTypedef tt = cast(TypeTypedef)t;
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429 buf.printf("cast(%s)", tt.sym.toChars());
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430 t = tt.sym.basetype;
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431 goto L1;
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432 }
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433
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434 case TY.Twchar: // BUG: need to cast(wchar)
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435 case TY.Tdchar: // BUG: need to cast(dchar)
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436 if (cast(ulong)v > 0xFF)
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437 {
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438 buf.printf("'\\U%08x'", v);
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439 break;
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440 }
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441 case TY.Tchar:
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442 if (v == '\'')
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443 buf.writestring("'\\''");
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444 else if (isprint(cast(int)v) && v != '\\')
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445 buf.printf("'%c'", cast(int)v);
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446 else
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447 buf.printf("'\\x%02x'", cast(int)v);
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448 break;
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449
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450 case TY.Tint8:
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451 buf.writestring("cast(byte)");
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452 goto L2;
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453
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454 case TY.Tint16:
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455 buf.writestring("cast(short)");
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456 goto L2;
|
|
|
457
|
|
|
458 case TY.Tint32:
|
|
|
459 L2:
|
|
|
460 buf.printf("%d", cast(int)v);
|
|
|
461 break;
|
|
|
462
|
|
|
463 case TY.Tuns8:
|
|
|
464 buf.writestring("cast(ubyte)");
|
|
|
465 goto L3;
|
|
|
466
|
|
|
467 case TY.Tuns16:
|
|
|
468 buf.writestring("cast(ushort)");
|
|
|
469 goto L3;
|
|
|
470
|
|
|
471 case TY.Tuns32:
|
|
|
472 L3:
|
|
|
473 buf.printf("%du", cast(uint)v);
|
|
|
474 break;
|
|
|
475
|
|
|
476 case TY.Tint64:
|
|
|
477 //buf.printf("%jdL", v);
|
|
|
478 buf.printf("%sL", v);
|
|
|
479 break;
|
|
|
480
|
|
|
481 case TY.Tuns64:
|
|
|
482 L4:
|
|
|
483 //buf.printf("%juLU", v);
|
|
|
484 buf.printf("%sLU", v);
|
|
|
485 break;
|
|
|
486
|
|
|
487 case TY.Tbit:
|
|
|
488 case TY.Tbool:
|
|
|
489 buf.writestring(v ? "true" : "false");
|
|
|
490 break;
|
|
|
491
|
|
|
492 case TY.Tpointer:
|
|
|
493 buf.writestring("cast(");
|
|
|
494 buf.writestring(t.toChars());
|
|
|
495 buf.writeByte(')');
|
|
|
496 if (PTRSIZE == 4)
|
|
|
497 goto L3;
|
|
|
498 else if (PTRSIZE == 8)
|
|
|
499 goto L4;
|
|
|
500 else
|
|
|
501 assert(0);
|
|
|
502
|
|
|
503 default:
|
|
|
504 /* This can happen if errors, such as
|
|
|
505 * the type is painted on like in fromConstInitializer().
|
|
|
506 */
|
|
|
507 if (!global.errors)
|
|
|
508 {
|
|
|
509 debug {
|
|
|
510 writef("%s\n", t.toChars());
|
|
|
511 }
|
|
|
512 assert(0);
|
|
|
513 }
|
|
|
514 break;
|
|
|
515 }
|
|
|
516 }
|
|
|
517 else if (v & 0x8000000000000000L)
|
|
|
518 buf.printf("0x%jx", v);
|
|
|
519 else
|
|
0
|
520 buf.printf("%jd", v);
|
|
|
521 }
|
|
|
522
|
|
72
|
523 override void toMangleBuffer(OutBuffer buf)
|
|
0
|
524 {
|
|
72
|
525 if (cast(long)value < 0)
|
|
|
526 buf.printf("N%d", -value);
|
|
|
527 else
|
|
|
528 buf.printf("%d", value);
|
|
0
|
529 }
|
|
|
530
|
|
72
|
531 override Expression toLvalue(Scope sc, Expression e)
|
|
0
|
532 {
|
|
72
|
533 if (!e)
|
|
|
534 e = this;
|
|
|
535 else if (!loc.filename)
|
|
|
536 loc = e.loc;
|
|
|
537 e.error("constant %s is not an lvalue", e.toChars());
|
|
0
|
538 return this;
|
|
|
539 }
|
|
|
540
|
|
72
|
541 override elem* toElem(IRState* irs)
|
|
0
|
542 {
|
|
72
|
543 elem* e = el_long(type.totym(), value);
|
|
|
544 el_setLoc(e,loc);
|
|
0
|
545 return e;
|
|
|
546 }
|
|
|
547
|
|
72
|
548 override dt_t** toDt(dt_t** pdt)
|
|
0
|
549 {
|
|
72
|
550 //printf("IntegerExp.toDt() %d\n", op);
|
|
|
551 uint sz = cast(uint)type.size();
|
|
|
552 if (value == 0)
|
|
|
553 pdt = dtnzeros(pdt, sz);
|
|
|
554 else
|
|
|
555 pdt = dtnbytes(pdt, sz, cast(char*)&value);
|
|
|
556
|
|
0
|
557 return pdt;
|
|
|
558 }
|
|
|
559 }
|
|
|
560
|
