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72
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1 module dmd.IntegerExp;
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2
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114
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3 import dmd.common;
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72
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4 import dmd.Expression;
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5 import dmd.backend.elem;
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6 import dmd.TY;
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7 import dmd.TypeEnum;
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8 import dmd.TypeTypedef;
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9 import dmd.Global;
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10 import dmd.InterState;
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11 import dmd.MATCH;
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12 import dmd.Type;
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13 import dmd.OutBuffer;
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14 import dmd.Loc;
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15 import dmd.Scope;
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16 import dmd.IntRange;
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17 import dmd.IRState;
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18 import dmd.HdrGenState;
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19 import dmd.TOK;
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20 import dmd.Complex;
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21
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22 import dmd.backend.dt_t;
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23 import dmd.backend.Util;
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24
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25 import core.stdc.ctype : isprint;
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73
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26 import std.stdio;
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72
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27
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0
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28 class IntegerExp : Expression
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29 {
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30 ulong value;
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31
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32 this(Loc loc, ulong value, Type type)
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33 {
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72
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34 super(loc, TOK.TOKint64, IntegerExp.sizeof);
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35
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36 //printf("IntegerExp(value = %lld, type = '%s')\n", value, type ? type.toChars() : "");
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37 if (type && !type.isscalar())
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38 {
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39 //printf("%s, loc = %d\n", toChars(), loc.linnum);
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40 error("integral constant must be scalar type, not %s", type.toChars());
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41 type = Type.terror;
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42 }
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43 this.type = type;
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0
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44 this.value = value;
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45 }
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46
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47 this(ulong value)
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72
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48 {
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0
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49 super(Loc(0), TOK.TOKint64, IntegerExp.sizeof);
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72
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50 this.type = Type.tint32;
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0
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51 this.value = value;
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52 }
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53
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72
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54 override bool equals(Object o)
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0
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55 {
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72
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56 IntegerExp ne;
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57
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58 if (this == o ||
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59 ((cast(Expression)o).op == TOKint64 &&
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60 ((ne = cast(IntegerExp)o), type.toHeadMutable().equals(ne.type.toHeadMutable())) &&
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61 value == ne.value)
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62 )
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63 return 1;
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64
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0
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65 return 0;
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66 }
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67
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72
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68 override Expression semantic(Scope sc)
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0
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69 {
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72
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70 if (!type)
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71 {
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72 // Determine what the type of this number is
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73 ulong number = value;
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74
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75 if (number & 0x8000000000000000)
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76 type = Type.tuns64;
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77 else if (number & 0xFFFFFFFF80000000)
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78 type = Type.tint64;
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79 else
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80 type = Type.tint32;
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81 }
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82 else
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83 { if (!type.deco)
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84 type = type.semantic(loc, sc);
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85 }
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0
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86 return this;
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87 }
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88
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72
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89 override Expression interpret(InterState istate)
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0
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90 {
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72
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91 version (LOG) {
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92 printf("IntegerExp.interpret() %s\n", toChars());
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93 }
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63
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94 return this;
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0
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95 }
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96
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72
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97 override string toChars()
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0
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98 {
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72
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99 static if (true) {
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100 return Expression.toChars();
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101 } else {
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102 static char buffer[value.sizeof * 3 + 1];
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103 int len = sprintf(buffer.ptr, "%jd", value);
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104 return buffer[0..len].idup;
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0
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105 }
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106 }
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107
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72
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108 override void dump(int indent)
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0
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109 {
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110 assert(false);
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111 }
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112
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72
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113 override IntRange getIntRange()
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0
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114 {
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72
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115 IntRange ir;
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116 ir.imin = value & type.sizemask();
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117 ir.imax = ir.imin;
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53
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118 return ir;
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0
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119 }
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120
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72
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121 override ulong toInteger()
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0
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122 {
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72
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123 Type t;
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124
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125 t = type;
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126 while (t)
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127 {
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128 switch (t.ty)
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129 {
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130 case TY.Tbit:
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131 case TY.Tbool: value = (value != 0); break;
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132 case TY.Tint8: value = cast(byte) value; break;
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133 case TY.Tchar:
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134 case TY.Tuns8: value = cast(ubyte) value; break;
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135 case TY.Tint16: value = cast(short) value; break;
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136 case TY.Twchar:
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137 case TY.Tuns16: value = cast(ushort)value; break;
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138 case TY.Tint32: value = cast(int) value; break;
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139 case TY.Tdchar:
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140 case TY.Tuns32: value = cast(uint) value; break;
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141 case TY.Tint64: value = cast(long) value; break;
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142 case TY.Tuns64: value = cast(ulong) value; break;
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143 case TY.Tpointer:
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144 if (PTRSIZE == 4)
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145 value = cast(uint) value;
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146 else if (PTRSIZE == 8)
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147 value = cast(ulong) value;
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148 else
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149 assert(0);
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150 break;
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151
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152 case TY.Tenum:
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153 {
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154 TypeEnum te = cast(TypeEnum)t;
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155 t = te.sym.memtype;
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156 continue;
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157 }
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158
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159 case TY.Ttypedef:
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160 {
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161 TypeTypedef tt = cast(TypeTypedef)t;
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162 t = tt.sym.basetype;
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163 continue;
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164 }
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165
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166 default:
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167 /* This can happen if errors, such as
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168 * the type is painted on like in fromConstInitializer().
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169 */
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170 if (!global.errors)
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73
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171 {
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109
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172 writef("%s %p\n", type.toChars(), type);
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72
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173 assert(0);
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174 }
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175 break;
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73
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176
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72
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177 }
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178 break;
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179 }
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0
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180 return value;
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181 }
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182
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72
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183 override real toReal()
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0
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184 {
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72
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185 Type t;
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186
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187 toInteger();
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188 t = type.toBasetype();
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189 if (t.ty == Tuns64)
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190 return cast(real)cast(ulong)value;
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191 else
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0
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192 return cast(real)cast(long)value;
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193 }
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194
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72
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195 override real toImaginary()
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0
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196 {
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197 assert(false);
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198 }
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199
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72
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200 override Complex!(real) toComplex()
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0
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201 {
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202 assert(false);
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203 }
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204
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72
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205 override int isConst()
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0
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206 {
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207 return 1;
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208 }
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209
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72
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210 override bool isBool(bool result)
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0
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211 {
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135
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212 int r = toInteger() != 0;
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213 return cast(bool)(result ? r : !r);
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0
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214 }
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215
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72
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216 override MATCH implicitConvTo(Type t)
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0
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217 {
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72
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218 static if (false) {
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219 printf("IntegerExp.implicitConvTo(this=%s, type=%s, t=%s)\n",
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220 toChars(), type.toChars(), t.toChars());
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221 }
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222
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223 MATCH m = type.implicitConvTo(t);
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224 if (m >= MATCH.MATCHconst)
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225 return m;
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226
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227 TY ty = type.toBasetype().ty;
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228 TY toty = t.toBasetype().ty;
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229
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230 if (m == MATCH.MATCHnomatch && t.ty == TY.Tenum)
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231 goto Lno;
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232
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233 switch (ty)
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234 {
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235 case TY.Tbit:
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236 case TY.Tbool:
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237 value &= 1;
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238 ty = TY.Tint32;
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239 break;
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240
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241 case TY.Tint8:
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242 value = cast(byte)value;
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243 ty = TY.Tint32;
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244 break;
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245
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246 case TY.Tchar:
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247 case TY.Tuns8:
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248 value &= 0xFF;
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249 ty = TY.Tint32;
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250 break;
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251
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252 case TY.Tint16:
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253 value = cast(short)value;
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254 ty = TY.Tint32;
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255 break;
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256
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257 case TY.Tuns16:
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258 case TY.Twchar:
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259 value &= 0xFFFF;
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260 ty = TY.Tint32;
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261 break;
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262
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263 case TY.Tint32:
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264 value = cast(int)value;
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265 break;
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266
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267 case TY.Tuns32:
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268 case TY.Tdchar:
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269 value &= 0xFFFFFFFF;
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270 ty = TY.Tuns32;
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271 break;
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272
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273 default:
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274 break;
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275 }
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276
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277 // Only allow conversion if no change in value
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278 switch (toty)
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279 {
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280 case TY.Tbit:
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281 case TY.Tbool:
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282 if ((value & 1) != value)
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283 goto Lno;
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284 goto Lyes;
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285
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286 case TY.Tint8:
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287 if (cast(byte)value != value)
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288 goto Lno;
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289 goto Lyes;
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290
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291 case TY.Tchar:
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292 case TY.Tuns8:
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293 //printf("value = %llu %llu\n", (dinteger_t)(unsigned char)value, value);
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294 if (cast(ubyte)value != value)
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295 goto Lno;
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296 goto Lyes;
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297
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298 case TY.Tint16:
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299 if (cast(short)value != value)
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300 goto Lno;
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301 goto Lyes;
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302
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303 case TY.Tuns16:
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304 if (cast(ushort)value != value)
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305 goto Lno;
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306 goto Lyes;
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307
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308 case TY.Tint32:
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309 if (ty == TY.Tuns32) {
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310 ;
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311 }
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312 else if (cast(int)value != value) {
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313 goto Lno;
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314 }
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315 goto Lyes;
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316
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317 case TY.Tuns32:
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318 if (ty == TY.Tint32) {
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319 } else if (cast(uint)value != value) {
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320 goto Lno;
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321 }
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322 goto Lyes;
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323
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324 case TY.Tdchar:
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325 if (value > 0x10FFFF) {
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326 goto Lno;
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327 }
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328 goto Lyes;
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329
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330 case TY.Twchar:
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331 if (cast(ushort)value != value) {
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332 goto Lno;
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333 }
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334 goto Lyes;
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335
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336 case TY.Tfloat32:
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337 {
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338 /*volatile*/ float f; ///
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339 if (type.isunsigned()) {
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340 f = cast(float)value;
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341 if (f != value) {
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342 goto Lno;
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343 }
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344 } else {
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345 f = cast(float)cast(long)value;
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346 if (f != cast(long)value) {
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347 goto Lno;
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348 }
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349 }
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350 goto Lyes;
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351 }
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352
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353 case TY.Tfloat64:
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354 {
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355 /*volatile*/ double f; ///
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356 if (type.isunsigned()) {
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357 f = cast(double)value;
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358 if (f != value)
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359 goto Lno;
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360 } else {
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361 f = cast(double)cast(long)value;
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362 if (f != cast(long)value)
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363 goto Lno;
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364 }
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365 goto Lyes;
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366 }
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367
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368 case TY.Tfloat80:
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369 {
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370 /*volatile*/ real f; ///
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371 if (type.isunsigned()) {
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372 f = cast(real)value;
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373 if (f != value)
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374 goto Lno;
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375 } else {
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376 f = cast(real)cast(long)value;
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377 if (f != cast(long)value)
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378 goto Lno;
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379 }
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380 goto Lyes;
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381 }
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382
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383 case TY.Tpointer:
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384 //printf("type = %s\n", type.toBasetype().toChars());
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385 //printf("t = %s\n", t.toBasetype().toChars());
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386 if (ty == TY.Tpointer && type.toBasetype().nextOf().ty == t.toBasetype().nextOf().ty)
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387 {
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388 /* Allow things like:
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389 * const char* P = cast(char *)3;
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390 * char* q = P;
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391 */
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392 goto Lyes;
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393 }
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394 break;
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395
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396 default:
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397 break; ///
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398 }
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399
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400 return Expression.implicitConvTo(t);
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401
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402 Lyes:
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403 //printf("MATCHconvert\n");
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404 return MATCH.MATCHconvert;
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405
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406 Lno:
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407 //printf("MATCHnomatch\n");
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0
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408 return MATCH.MATCHnomatch;
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409 }
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410
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72
|
411 override void toCBuffer(OutBuffer buf, HdrGenState* hgs)
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0
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412 {
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72
|
413 long v = toInteger();
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414
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415 if (type)
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416 {
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417 Type t = type;
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418
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419 L1:
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420 switch (t.ty)
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421 {
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422 case TY.Tenum:
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423 {
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424 TypeEnum te = cast(TypeEnum)t;
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425 buf.printf("cast(%s)", te.sym.toChars());
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426 t = te.sym.memtype;
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427 goto L1;
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428 }
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429
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430 case TY.Ttypedef:
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431 {
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432 TypeTypedef tt = cast(TypeTypedef)t;
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433 buf.printf("cast(%s)", tt.sym.toChars());
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434 t = tt.sym.basetype;
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435 goto L1;
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436 }
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437
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438 case TY.Twchar: // BUG: need to cast(wchar)
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439 case TY.Tdchar: // BUG: need to cast(dchar)
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440 if (cast(ulong)v > 0xFF)
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441 {
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442 buf.printf("'\\U%08x'", v);
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443 break;
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444 }
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445 case TY.Tchar:
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446 if (v == '\'')
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447 buf.writestring("'\\''");
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448 else if (isprint(cast(int)v) && v != '\\')
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449 buf.printf("'%c'", cast(int)v);
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450 else
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451 buf.printf("'\\x%02x'", cast(int)v);
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452 break;
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453
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454 case TY.Tint8:
|
|
|
455 buf.writestring("cast(byte)");
|
|
|
456 goto L2;
|
|
|
457
|
|
|
458 case TY.Tint16:
|
|
|
459 buf.writestring("cast(short)");
|
|
|
460 goto L2;
|
|
|
461
|
|
|
462 case TY.Tint32:
|
|
|
463 L2:
|
|
|
464 buf.printf("%d", cast(int)v);
|
|
|
465 break;
|
|
|
466
|
|
|
467 case TY.Tuns8:
|
|
|
468 buf.writestring("cast(ubyte)");
|
|
|
469 goto L3;
|
|
|
470
|
|
|
471 case TY.Tuns16:
|
|
|
472 buf.writestring("cast(ushort)");
|
|
|
473 goto L3;
|
|
|
474
|
|
|
475 case TY.Tuns32:
|
|
|
476 L3:
|
|
|
477 buf.printf("%du", cast(uint)v);
|
|
|
478 break;
|
|
|
479
|
|
|
480 case TY.Tint64:
|
|
|
481 //buf.printf("%jdL", v);
|
|
|
482 buf.printf("%sL", v);
|
|
|
483 break;
|
|
|
484
|
|
|
485 case TY.Tuns64:
|
|
|
486 L4:
|
|
|
487 //buf.printf("%juLU", v);
|
|
|
488 buf.printf("%sLU", v);
|
|
|
489 break;
|
|
|
490
|
|
|
491 case TY.Tbit:
|
|
|
492 case TY.Tbool:
|
|
|
493 buf.writestring(v ? "true" : "false");
|
|
|
494 break;
|
|
|
495
|
|
|
496 case TY.Tpointer:
|
|
|
497 buf.writestring("cast(");
|
|
|
498 buf.writestring(t.toChars());
|
|
|
499 buf.writeByte(')');
|
|
|
500 if (PTRSIZE == 4)
|
|
|
501 goto L3;
|
|
|
502 else if (PTRSIZE == 8)
|
|
|
503 goto L4;
|
|
|
504 else
|
|
|
505 assert(0);
|
|
|
506
|
|
|
507 default:
|
|
|
508 /* This can happen if errors, such as
|
|
|
509 * the type is painted on like in fromConstInitializer().
|
|
|
510 */
|
|
|
511 if (!global.errors)
|
|
|
512 {
|
|
|
513 debug {
|
|
|
514 writef("%s\n", t.toChars());
|
|
|
515 }
|
|
|
516 assert(0);
|
|
|
517 }
|
|
|
518 break;
|
|
|
519 }
|
|
|
520 }
|
|
|
521 else if (v & 0x8000000000000000L)
|
|
|
522 buf.printf("0x%jx", v);
|
|
|
523 else
|
|
0
|
524 buf.printf("%jd", v);
|
|
|
525 }
|
|
|
526
|
|
72
|
527 override void toMangleBuffer(OutBuffer buf)
|
|
0
|
528 {
|
|
72
|
529 if (cast(long)value < 0)
|
|
|
530 buf.printf("N%d", -value);
|
|
|
531 else
|
|
|
532 buf.printf("%d", value);
|
|
0
|
533 }
|
|
|
534
|
|
72
|
535 override Expression toLvalue(Scope sc, Expression e)
|
|
0
|
536 {
|
|
72
|
537 if (!e)
|
|
|
538 e = this;
|
|
|
539 else if (!loc.filename)
|
|
|
540 loc = e.loc;
|
|
|
541 e.error("constant %s is not an lvalue", e.toChars());
|
|
0
|
542 return this;
|
|
|
543 }
|
|
|
544
|
|
72
|
545 override elem* toElem(IRState* irs)
|
|
0
|
546 {
|
|
72
|
547 elem* e = el_long(type.totym(), value);
|
|
|
548 el_setLoc(e,loc);
|
|
0
|
549 return e;
|
|
|
550 }
|
|
|
551
|
|
72
|
552 override dt_t** toDt(dt_t** pdt)
|
|
0
|
553 {
|
|
72
|
554 //printf("IntegerExp.toDt() %d\n", op);
|
|
|
555 uint sz = cast(uint)type.size();
|
|
|
556 if (value == 0)
|
|
|
557 pdt = dtnzeros(pdt, sz);
|
|
|
558 else
|
|
|
559 pdt = dtnbytes(pdt, sz, cast(char*)&value);
|
|
|
560
|
|
0
|
561 return pdt;
|
|
|
562 }
|
|
|
563 }
|
|
|
564
|
