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