1 | // ============================================================= // |
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2 | // // |
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3 | // File : probe_tree.h // |
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4 | // Purpose : // |
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5 | // // |
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6 | // Institute of Microbiology (Technical University Munich) // |
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7 | // http://www.arb-home.de/ // |
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8 | // // |
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9 | // ============================================================= // |
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10 | |
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11 | #ifndef PROBE_TREE_H |
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12 | #define PROBE_TREE_H |
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13 | |
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14 | #if defined(DARWIN) |
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15 | #include <krb5.h> |
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16 | #else |
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17 | #include <bits/wordsize.h> |
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18 | #endif // DARWIN |
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19 | |
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20 | #ifndef STATIC_ASSERT_H |
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21 | #include <static_assert.h> |
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22 | #endif |
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23 | #ifndef PROBE_H |
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24 | #include "probe.h" |
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25 | #endif |
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26 | |
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27 | #define PT_CHAIN_NTERM 250 |
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28 | #define PT_SHORT_SIZE 0xffff |
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29 | #define PT_INIT_CHAIN_SIZE 20 |
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30 | |
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31 | struct pt_global { |
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32 | char count_bits[PT_BASES+1][256]; // returns how many bits are set (e.g. PT_count_bits[3][n] is the number of the 3 lsb bits) |
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33 | |
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34 | void init(); |
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35 | }; |
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36 | |
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37 | extern pt_global PT_GLOBAL; |
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38 | |
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39 | /* -------------------------------------------------------------------------------- |
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40 | * |
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41 | * Their are 3 stages of data format: |
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42 | * 1st: Creation of the tree |
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43 | * 2nd: Tree saved to disk |
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44 | * |
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45 | * In stage 1 every element has a father pointer directly behind |
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46 | * the 1st byte (flags). Exception: Nodes of type PT1_SAVED. |
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47 | * |
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48 | * -------------------- |
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49 | * Data format: |
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50 | * |
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51 | * for 'compactNAT' see PT_write_compact_nat / PT_read_compact_nat |
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52 | * |
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53 | * ---------- Written object (PT1_SAVED) |
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54 | * |
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55 | * flags bit[7] = 0 |
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56 | * bit[6] = 0 |
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57 | * bit[5] = 1 |
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58 | * bit[4] = unused |
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59 | * bit[3-0] = size of former entry-4 (if ==0 then size follows) |
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60 | * PT_PNTR rel start of the object in the saved index |
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61 | * [int size] (if flagsbit[3-0] == 0) |
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62 | * |
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63 | * ---------- leaf (PT1_LEAF and PT2_LEAF) |
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64 | * |
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65 | * byte flags bit[7] = 0 |
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66 | * bit[6] = 0 |
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67 | * bit[5] = 0 |
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68 | * bit[4-3] = unused |
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69 | * bit[2-0] = used to indicate sizes of entries below |
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70 | * [PT_PNTR father] only if type is PT1_LEAF |
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71 | * short/int name int if bit[0] |
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72 | * short/int relpos int if bit[1] |
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73 | * short/int abspos int if bit[2] |
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74 | * |
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75 | * ---------- inner node (PT1_NODE) |
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76 | * |
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77 | * byte flags bit[7] = 1 |
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78 | * bit[6] = 0 |
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79 | * bit[5-0] = indicate existing sons |
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80 | * PT_PNTR father |
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81 | * [PT_PNTR son0] if bit[0] |
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82 | * ... ... |
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83 | * [PT_PNTR son5] if bit[5] |
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84 | * |
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85 | * ---------- inner node with more than one child (PT2_NODE) |
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86 | * |
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87 | * byte flags bit[7] = 1 |
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88 | * bit[6] = 0 |
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89 | * bit[5-0] = indicate existing sons |
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90 | * byte2 bit2[7] = 0 bit2[6] = 0 --> short/char |
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91 | * bit2[7] = 1 bit2[6] = 0 --> int/short |
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92 | * bit2[7] = 0 bit2[6] = 1 --> long/int (only if ARB_64 is set) |
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93 | * bit2[7] = 1 bit2[6] = 1 --> undefined (only if ARB_64 is set) |
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94 | * |
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95 | * [char/short/int/long son0] if bit[0]; uses left (bigger) type if bit2[0] else right (smaller) type |
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96 | * [char/short/int/long son1] if bit[1]; uses left (bigger) type if bit2[1] else right (smaller) type |
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97 | * ... |
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98 | * [char/short/int/long son5] if bit[5]; uses left (bigger) type if bit2[5] else right (smaller) type |
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99 | * |
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100 | * example1: byte = 0x8d --> inner node; son0, son2 and son3 are available |
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101 | * byte2 = 0x05 --> son0 and son2 are shorts; son3 is a char |
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102 | * |
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103 | * example2: byte = 0x8d --> inner node; son0, son2 and son3 are available |
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104 | * byte2 = 0x81 --> son0 is a int; son2 and son3 are shorts |
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105 | * |
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106 | * [example3 atm only if ARB_64 is set] |
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107 | * example3: byte = 0x8d --> inner node; son0, son2 and son3 are available |
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108 | * byte2 = 0x44 --> son2 is a long; son0 and son3 are ints |
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109 | * |
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110 | * ---------- inner node with single child (PT2_NODE) |
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111 | * |
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112 | * byte flags bit[7] = 1 |
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113 | * bit[6] = 1 |
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114 | * bit[5-3] = offset 0->1 1->3 2->4 3->5 .... |
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115 | * bit[2-0] = base |
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116 | * |
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117 | * ---------- chain (PT1_CHAIN) |
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118 | * |
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119 | * byte flags bit[7] = 0 |
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120 | * bit[6] = 1 |
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121 | * bit[5] = 0 |
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122 | * bit[4] = uses PT_short_chain_header (see SHORT_CHAIN_HEADER_FLAG_BIT) |
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123 | * bit[3] = unused |
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124 | * bit[2-0] = entries in PT_short_chain_header, see SHORT_CHAIN_HEADER_SIZE_MASK (unused otherwise) |
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125 | * PT_PNTR father |
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126 | * PT_short_chain_header or PT_long_chain_header |
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127 | * |
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128 | * if PT_long_chain_header is used, the memory pointed-to by its 'entrymem' |
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129 | * contains for each chain element: |
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130 | * |
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131 | * compactNAT namediff (1 bit reserved for 'hasrefapos') |
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132 | * [compactNAT abspos] (if 'hasrefapos'; otherwise entry has refabspos as in PT_long_chain_header) |
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133 | * |
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134 | * ---------- chain (PT2_CHAIN) |
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135 | * |
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136 | * byte flags bit[7] = 0 |
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137 | * bit[6] = 1 |
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138 | * bit[5-1] = unused |
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139 | * bit[0] = flag for refabspos |
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140 | * short/int refabspos (int if bit[0]) |
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141 | * compactNAT chainsize |
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142 | * |
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143 | * for each chain element: |
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144 | * |
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145 | * compactNAT namediff (relative to previous name in chain; first bit reserved : 1 -> has refabspos ) |
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146 | * [compactNAT abspos] (only if not has refabspos) |
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147 | * |
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148 | */ |
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149 | |
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150 | #define IS_SINGLE_BRANCH_NODE 0x40 |
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151 | #ifdef ARB_64 |
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152 | # define INT_SONS 0x80 |
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153 | # define LONG_SONS 0x40 |
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154 | #else |
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155 | # define LONG_SONS 0x80 |
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156 | #endif |
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157 | |
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158 | // ----------------------------------------------- |
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159 | // Get the size of entries (stage 1) only |
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160 | |
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161 | #define PT1_BASE_SIZE sizeof(POS_TREE1) // flag + father |
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162 | |
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163 | #define PT1_EMPTY_LEAF_SIZE (PT1_BASE_SIZE+6) // name rel apos |
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164 | #define PT1_LEAF_SIZE(leaf) (PT1_BASE_SIZE+6+2*PT_GLOBAL.count_bits[3][(leaf)->flags]) |
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165 | #define PT1_CHAIN_SHORT_HEAD_SIZE (PT1_BASE_SIZE+2+sizeof(PT_PNTR)) // apos first_elem |
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166 | #define PT1_CHAIN_LONG_HEAD_SIZE (PT1_CHAIN_SHORT_HEAD_SIZE+2) // apos uses 4 byte here |
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167 | #define PT1_EMPTY_NODE_SIZE PT1_BASE_SIZE |
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168 | |
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169 | #define PT1_MIN_CHAIN_ENTRY_SIZE (sizeof(PT_PNTR)+3*sizeof(char)) // depends on PT_write_compact_nat |
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170 | #define PT1_MAX_CHAIN_ENTRY_SIZE (sizeof(PT_PNTR)+3*(sizeof(int)+1)) |
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171 | |
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172 | #define PT1_NODE_WITHSONS_SIZE(sons) (PT1_EMPTY_NODE_SIZE+sizeof(PT_PNTR)*(sons)) |
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173 | |
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174 | #define PT_NODE_SON_COUNT(node) (PT_GLOBAL.count_bits[PT_BASES][node->flags]) |
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175 | #define PT1_NODE_SIZE(node) PT1_NODE_WITHSONS_SIZE(PT_NODE_SON_COUNT(node)) |
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176 | |
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177 | // ----------------- |
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178 | // POS TREE |
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179 | |
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180 | #define FLAG_TYPE_BITS 2 |
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181 | #define FLAG_FREE_BITS (8-FLAG_TYPE_BITS) |
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182 | #define FLAG_FREE_BITS_MASK ((1<<FLAG_TYPE_BITS)-1) |
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183 | #define FLAG_TYPE_BITS_MASK (0xFF^FLAG_FREE_BITS_MASK) |
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184 | |
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185 | enum PT1_TYPE { |
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186 | PT1_LEAF = 0, |
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187 | PT1_CHAIN = 1, |
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188 | PT1_NODE = 2, |
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189 | PT1_SAVED = 3, |
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190 | PT1_UNDEF = 4, |
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191 | }; |
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192 | |
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193 | enum PT2_TYPE { |
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194 | PT2_LEAF = PT1_LEAF, |
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195 | PT2_CHAIN = PT1_CHAIN, |
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196 | PT2_NODE = PT1_NODE, |
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197 | }; |
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198 | |
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199 | struct POS_TREE1 { // pos-tree (stage 1) |
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200 | uchar flags; |
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201 | POS_TREE1 *father; |
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202 | |
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203 | typedef PT1_TYPE TYPE; |
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204 | |
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205 | static TYPE flag_2_type[256]; |
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206 | static void init_static(); |
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207 | |
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208 | const char *udata() const { return ((const char*)this)+sizeof(*this); } |
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209 | char *udata() { return ((char*)this)+sizeof(*this); } |
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210 | |
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211 | POS_TREE1 *get_father() const { |
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212 | pt_assert(!is_saved()); |
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213 | return father; |
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214 | } |
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215 | void set_father(POS_TREE1 *new_father) { |
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216 | pt_assert(!new_father || new_father->is_node()); |
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217 | father = new_father; |
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218 | } |
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219 | void clear_fathers(); |
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220 | |
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221 | void set_type(TYPE type) { |
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222 | // sets user bits to zero |
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223 | pt_assert(type != PT1_UNDEF && type != PT1_SAVED); // does not work for saved nodes (done manually) |
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224 | flags = type<<FLAG_FREE_BITS; |
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225 | } |
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226 | TYPE get_type() const { return flag_2_type[flags]; } |
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227 | |
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228 | bool is_node() const { return get_type() == PT1_NODE; } |
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229 | bool is_leaf() const { return get_type() == PT1_LEAF; } |
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230 | bool is_chain() const { return get_type() == PT1_CHAIN; } |
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231 | bool is_saved() const { return get_type() == PT1_SAVED; } |
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232 | } __attribute__((packed)); |
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233 | |
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234 | struct POS_TREE2 { // pos-tree (stage 2) |
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235 | uchar flags; |
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236 | |
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237 | typedef PT2_TYPE TYPE; |
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238 | |
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239 | static TYPE flag_2_type[256]; |
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240 | static void init_static(); |
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241 | |
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242 | const char *udata() const { return ((const char*)this)+sizeof(*this); } |
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243 | char *udata() { return ((char*)this)+sizeof(*this); } |
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244 | |
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245 | void set_type(TYPE type) { flags = type<<FLAG_FREE_BITS; } // sets user bits to zero |
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246 | TYPE get_type() const { return flag_2_type[flags]; } |
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247 | |
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248 | bool is_node() const { return get_type() == PT2_NODE; } |
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249 | bool is_leaf() const { return get_type() == PT2_LEAF; } |
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250 | bool is_chain() const { return get_type() == PT2_CHAIN; } |
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251 | } __attribute__((packed)); |
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252 | |
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253 | |
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254 | #if defined(ARB_64) |
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255 | #define SHORT_CHAIN_HEADER_ELEMS 4 |
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256 | #else // !defined(ARB_64) |
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257 | #define SHORT_CHAIN_HEADER_ELEMS 3 |
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258 | #endif |
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259 | |
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260 | #define SHORT_CHAIN_HEADER_FLAG_BIT (1<<4) |
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261 | #define SHORT_CHAIN_HEADER_SIZE_MASK 0x07 |
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262 | |
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263 | STATIC_ASSERT(SHORT_CHAIN_HEADER_SIZE_MASK >= SHORT_CHAIN_HEADER_ELEMS); |
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264 | STATIC_ASSERT((SHORT_CHAIN_HEADER_SIZE_MASK & SHORT_CHAIN_HEADER_FLAG_BIT) == 0); |
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265 | |
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266 | struct PT_short_chain_header { |
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267 | unsigned name[SHORT_CHAIN_HEADER_ELEMS]; |
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268 | unsigned abspos[SHORT_CHAIN_HEADER_ELEMS]; |
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269 | }; |
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270 | |
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271 | struct PT_long_chain_header { |
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272 | unsigned entries; |
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273 | unsigned memsize; |
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274 | unsigned memused; |
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275 | unsigned refabspos; |
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276 | unsigned lastname; |
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277 | char *entrymem; |
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278 | }; |
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279 | |
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280 | STATIC_ASSERT(sizeof(PT_long_chain_header) >= sizeof(PT_short_chain_header)); // SHORT_CHAIN_HEADER_ELEMS is too big |
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281 | STATIC_ASSERT((sizeof(PT_short_chain_header)/SHORT_CHAIN_HEADER_ELEMS*(SHORT_CHAIN_HEADER_ELEMS+1)) > sizeof(PT_long_chain_header)); // SHORT_CHAIN_HEADER_ELEMS is too small |
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282 | |
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283 | inline size_t PT_node_size(POS_TREE2 *node) { // @@@ become member |
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284 | size_t size = 1; // flags |
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285 | if ((node->flags & IS_SINGLE_BRANCH_NODE) == 0) { |
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286 | UINT sec = (uchar)*node->udata(); // read second byte for charshort/shortlong info |
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287 | ++size; |
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288 | |
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289 | long i = PT_GLOBAL.count_bits[PT_BASES][node->flags] + PT_GLOBAL.count_bits[PT_BASES][sec]; |
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290 | #ifdef ARB_64 |
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291 | if (sec & LONG_SONS) { |
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292 | size += 4*i; |
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293 | } |
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294 | else if (sec & INT_SONS) { |
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295 | size += 2*i; |
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296 | } |
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297 | else { |
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298 | size += i; |
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299 | } |
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300 | #else |
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301 | if (sec & LONG_SONS) { |
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302 | size += 2*i; |
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303 | } |
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304 | else { |
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305 | size += i; |
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306 | } |
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307 | #endif |
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308 | } |
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309 | return size; |
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310 | } |
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311 | |
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312 | template <typename PT> inline PT *PT_read_son(PT *node, PT_base base); // @@@ become member |
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313 | |
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314 | template <> inline POS_TREE2 *PT_read_son<POS_TREE2>(POS_TREE2 *node, PT_base base) { // stage 2 (no father) |
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315 | pt_assert_stage(STAGE2); |
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316 | pt_assert(node->is_node()); |
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317 | |
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318 | if (node->flags & IS_SINGLE_BRANCH_NODE) { |
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319 | if (base != (node->flags & 0x7)) return NULp; // no son |
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320 | long i = (node->flags >> 3)&0x7; // this son |
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321 | if (!i) i = 1; else i+=2; // offset mapping |
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322 | pt_assert(i >= 0); |
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323 | return (POS_TREE2 *)(((char *)node)-i); |
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324 | } |
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325 | if (!((1<<base) & node->flags)) { // bit not set |
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326 | return NULp; |
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327 | } |
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328 | |
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329 | UINT sec = (uchar)*node->udata(); // read second byte for charshort/shortlong info |
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330 | long i = PT_GLOBAL.count_bits[base][node->flags]; |
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331 | i += PT_GLOBAL.count_bits[base][sec]; |
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332 | |
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333 | char *sons = node->udata()+1; |
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334 | |
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335 | #ifdef ARB_64 |
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336 | if (sec & LONG_SONS) { |
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337 | if (sec & INT_SONS) { // undefined -> error |
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338 | GBK_terminate("Your pt-server search tree is corrupt! You can not use it anymore.\n" |
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339 | "Error: ((sec & LONG_SON) && (sec & INT_SONS)) == true\n" |
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340 | " this combination of both flags is not implemented"); |
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341 | } |
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342 | else { // long/int |
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343 | #ifdef DEBUG |
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344 | printf("Warning: A search tree of this size is not tested.\n"); |
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345 | printf(" (sec & LONG_SON) == true\n"); |
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346 | #endif |
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347 | UINT offset = 4 * i; |
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348 | if ((1<<base) & sec) { // long |
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349 | i = PT_read_long(sons+offset); |
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350 | } |
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351 | else { // int |
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352 | i = PT_read_int(sons+offset); |
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353 | } |
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354 | } |
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355 | |
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356 | } |
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357 | else { |
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358 | if (sec & INT_SONS) { // int/short |
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359 | UINT offset = i+i; |
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360 | if ((1<<base) & sec) { // int |
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361 | i = PT_read_int(sons+offset); |
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362 | } |
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363 | else { // short |
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364 | i = PT_read_short(sons+offset); |
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365 | } |
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366 | } |
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367 | else { // short/char |
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368 | UINT offset = i; |
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369 | if ((1<<base) & sec) { // short |
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370 | i = PT_read_short(sons+offset); |
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371 | } |
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372 | else { // char |
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373 | i = PT_read_char(sons+offset); |
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374 | } |
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375 | } |
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376 | } |
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377 | #else |
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378 | if (sec & LONG_SONS) { |
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379 | UINT offset = i+i; |
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380 | if ((1<<base) & sec) { |
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381 | i = PT_read_int(sons+offset); |
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382 | } |
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383 | else { |
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384 | i = PT_read_short(sons+offset); |
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385 | } |
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386 | } |
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387 | else { |
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388 | UINT offset = i; |
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389 | if ((1<<base) & sec) { |
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390 | i = PT_read_short(sons+offset); |
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391 | } |
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392 | else { |
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393 | i = PT_read_char(sons+offset); |
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394 | } |
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395 | } |
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396 | #endif |
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397 | pt_assert(i >= 0); |
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398 | return (POS_TREE2 *)(((char*)node)-i); |
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399 | } |
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400 | |
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401 | template<> inline POS_TREE1 *PT_read_son<POS_TREE1>(POS_TREE1 *node, PT_base base) { |
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402 | pt_assert_stage(STAGE1); |
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403 | if (!((1<<base) & node->flags)) return NULp; // bit not set |
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404 | base = (PT_base)PT_GLOBAL.count_bits[base][node->flags]; |
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405 | return PT_read_pointer<POS_TREE1>(node->udata() + sizeof(PT_PNTR)*base); |
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406 | } |
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407 | |
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408 | inline size_t PT_leaf_size(POS_TREE2 *node) { // @@@ become member |
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409 | size_t size = 1; // flags |
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410 | size += (PT_GLOBAL.count_bits[PT_BASES][node->flags]+3)*2; |
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411 | return size; |
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412 | } |
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413 | |
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414 | // -------------------------------------- |
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415 | // Different types of locations |
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416 | |
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417 | class AbsLoc { |
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418 | int name; // index into psg.data[], aka species id |
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419 | int apos; // absolute position in alignment |
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420 | protected: |
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421 | void set_abs_pos(int abs_pos) { apos = abs_pos; } |
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422 | void set_name(int name_) { |
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423 | pt_assert(name == -1); // only allowed if instance has been default constructed |
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424 | name = name_; |
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425 | pt_assert(has_valid_name()); |
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426 | } |
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427 | public: |
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428 | AbsLoc() : name(-1), apos(0) {} |
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429 | AbsLoc(int name_, int abs_pos) : name(name_), apos(abs_pos) {} |
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430 | virtual ~AbsLoc() {} |
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431 | |
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432 | bool has_valid_name() const { return name >= 0 && name < psg.data_count; } |
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433 | |
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434 | int get_name() const { return name; } |
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435 | int get_abs_pos() const { return apos; } |
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436 | |
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437 | const probe_input_data& get_pid() const { pt_assert(has_valid_name()); return psg.data[name]; } |
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438 | |
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439 | bool is_equal(const AbsLoc& other) const { return apos == other.apos && name == other.name; } |
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440 | |
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441 | #if defined(DEBUG) |
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442 | void dump(FILE *fp) const { |
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443 | fprintf(fp, " apos=%6i name=%6i='%s'\n", |
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444 | get_abs_pos(), get_name(), has_valid_name() ? get_pid().get_shortname() : "<invalid>"); |
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445 | } |
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446 | #endif |
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447 | }; |
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448 | |
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449 | class DataLoc : public AbsLoc { |
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450 | int rpos; // relative position in data |
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451 | |
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452 | public: |
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453 | bool has_valid_positions() const { return get_abs_pos() >= 0 && rpos >= 0 && get_abs_pos() >= rpos; } |
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454 | |
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455 | DataLoc() : rpos(0) {} |
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456 | DataLoc(int name_, int apos_, int rpos_) : AbsLoc(name_, apos_), rpos(rpos_) { pt_assert(has_valid_positions()); } |
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457 | template <typename PT> explicit DataLoc(const PT *node) { |
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458 | pt_assert(node->is_leaf()); |
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459 | const char *data = node->udata(); |
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460 | if (node->flags&1) { set_name(PT_read_int(data)); data += 4; } else { set_name(PT_read_short(data)); data += 2; } |
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461 | if (node->flags&2) { rpos = PT_read_int(data); data += 4; } else { rpos = PT_read_short(data); data += 2; } |
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462 | if (node->flags&4) { set_abs_pos(PT_read_int(data)); data += 4; } else { set_abs_pos(PT_read_short(data)); /*data += 2;*/ } |
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463 | |
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464 | pt_assert(has_valid_positions()); |
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465 | } |
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466 | explicit DataLoc(const AbsLoc& aloc) // expensive! |
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467 | : AbsLoc(aloc), |
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468 | rpos(get_pid().calc_relpos(get_abs_pos())) |
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469 | {} |
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470 | |
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471 | int get_rel_pos() const { return rpos; } |
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472 | |
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473 | void set_position(int abs_pos, int rel_pos) { |
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474 | set_abs_pos(abs_pos); |
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475 | rpos = rel_pos; |
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476 | pt_assert(has_valid_positions()); |
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477 | } |
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478 | |
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479 | bool is_equal(const DataLoc& other) const { return rpos == other.rpos && AbsLoc::is_equal(other); } |
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480 | |
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481 | #if defined(DEBUG) |
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482 | void dump(FILE *fp) const { |
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483 | fprintf(fp, " apos=%6i rpos=%6i name=%6i='%s'\n", |
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484 | get_abs_pos(), rpos, get_name(), has_valid_name() ? get_pid().get_shortname() : "<invalid>"); |
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485 | } |
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486 | #endif |
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487 | }; |
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488 | |
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489 | inline bool operator==(const AbsLoc& loc1, const AbsLoc& loc2) { return loc1.is_equal(loc2); } |
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490 | |
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491 | // ------------------------- |
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492 | // ReadableDataLoc |
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493 | |
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494 | class ReadableDataLoc : public DataLoc { |
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495 | const probe_input_data& pid; |
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496 | mutable SmartCharPtr seq; |
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497 | const char& qseq; |
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498 | |
---|
499 | public: |
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500 | ReadableDataLoc(int name_, int apos_, int rpos_) |
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501 | : DataLoc(name_, apos_, rpos_), |
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502 | pid(DataLoc::get_pid()), |
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503 | seq(pid.get_dataPtr()), |
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504 | qseq(*seq) |
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505 | {} |
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506 | explicit ReadableDataLoc(const DataLoc& loc) |
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507 | : DataLoc(loc), |
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508 | pid(DataLoc::get_pid()), |
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509 | seq(pid.get_dataPtr()), |
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510 | qseq(*seq) |
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511 | {} |
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512 | template <typename PT> explicit ReadableDataLoc(const PT *node) |
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513 | : DataLoc(node), |
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514 | pid(DataLoc::get_pid()), |
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515 | seq(pid.get_dataPtr()), |
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516 | qseq(*seq) |
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517 | {} |
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518 | |
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519 | const probe_input_data& get_pid() const { return pid; } |
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520 | |
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521 | PT_base operator[](int offset) const { |
---|
522 | int ro_pos = get_rel_pos()+offset; |
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523 | return pid.valid_rel_pos(ro_pos) ? PT_base((&qseq)[ro_pos]) : PT_QU; |
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524 | } |
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525 | }; |
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526 | |
---|
527 | // ----------------------- |
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528 | |
---|
529 | inline const char *PT_READ_CHAIN_ENTRY_stage_2(const char *ptr, int refabspos, AbsLoc& loc) { |
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530 | // Caution: 'name' (of AbsLoc) has to be initialized before first call and shall not be modified between calls |
---|
531 | |
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532 | pt_assert_stage(STAGE2); |
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533 | |
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534 | uint_8 has_main_apos; |
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535 | uint_32 name = loc.get_name() + read_nat_with_reserved_bits<1>(ptr, has_main_apos); |
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536 | |
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537 | loc = AbsLoc(name, has_main_apos ? refabspos : PT_read_compact_nat(ptr)); |
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538 | |
---|
539 | return ptr; |
---|
540 | } |
---|
541 | |
---|
542 | inline char *PT_WRITE_CHAIN_ENTRY(char *ptr, int refabspos, int name, const int apos) { |
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543 | pt_assert_stage(STAGE1); |
---|
544 | bool has_main_apos = (apos == refabspos); |
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545 | write_nat_with_reserved_bits<1>(ptr, name, has_main_apos); |
---|
546 | if (!has_main_apos) PT_write_compact_nat(ptr, apos); |
---|
547 | return ptr; |
---|
548 | } |
---|
549 | |
---|
550 | // ----------------------- |
---|
551 | // ChainIterators |
---|
552 | |
---|
553 | class ChainIteratorStage1 : virtual Noncopyable { |
---|
554 | bool is_short; |
---|
555 | union _U { |
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556 | struct _S { |
---|
557 | const PT_short_chain_header *header; |
---|
558 | int next_entry; |
---|
559 | |
---|
560 | void set_loc(AbsLoc& location) { |
---|
561 | pt_assert(next_entry<SHORT_CHAIN_HEADER_ELEMS); |
---|
562 | location = AbsLoc(header->name[next_entry], header->abspos[next_entry]); |
---|
563 | ++next_entry; |
---|
564 | } |
---|
565 | } S; |
---|
566 | struct _L { |
---|
567 | int refabspos; |
---|
568 | const char *read_pos; |
---|
569 | |
---|
570 | void set_loc(AbsLoc& location) { |
---|
571 | uint_8 has_refabspos; |
---|
572 | uint_32 name = location.get_name()+read_nat_with_reserved_bits<1>(read_pos, has_refabspos); |
---|
573 | uint_32 abspos = has_refabspos ? refabspos : PT_read_compact_nat(read_pos); |
---|
574 | location = AbsLoc(name, abspos); |
---|
575 | } |
---|
576 | } L; |
---|
577 | } iter; |
---|
578 | |
---|
579 | AbsLoc loc; |
---|
580 | int elements_ahead; |
---|
581 | |
---|
582 | bool at_end_of_chain() const { return elements_ahead<0; } |
---|
583 | void set_loc_from_chain() { |
---|
584 | pt_assert(!at_end_of_chain()); |
---|
585 | if (elements_ahead>0) { |
---|
586 | if (is_short) iter.S.set_loc(loc); |
---|
587 | else iter.L.set_loc(loc); |
---|
588 | } |
---|
589 | else { |
---|
590 | pt_assert(elements_ahead == 0); |
---|
591 | loc = AbsLoc(); |
---|
592 | } |
---|
593 | --elements_ahead; |
---|
594 | pt_assert(at_end_of_chain() || loc.has_valid_name()); |
---|
595 | } |
---|
596 | void inc() { |
---|
597 | pt_assert(!at_end_of_chain()); |
---|
598 | set_loc_from_chain(); |
---|
599 | } |
---|
600 | |
---|
601 | public: |
---|
602 | typedef POS_TREE1 POS_TREE_TYPE; |
---|
603 | |
---|
604 | ChainIteratorStage1(const POS_TREE1 *node) |
---|
605 | : loc(0, 0) |
---|
606 | { |
---|
607 | pt_assert_stage(STAGE1); |
---|
608 | pt_assert(node->is_chain()); |
---|
609 | |
---|
610 | is_short = node->flags & SHORT_CHAIN_HEADER_FLAG_BIT; |
---|
611 | if (is_short) { |
---|
612 | elements_ahead = node->flags & SHORT_CHAIN_HEADER_SIZE_MASK; |
---|
613 | iter.S.next_entry = 0; |
---|
614 | iter.S.header = reinterpret_cast<const PT_short_chain_header*>(node->udata()); |
---|
615 | } |
---|
616 | else { |
---|
617 | const PT_long_chain_header *header = reinterpret_cast<const PT_long_chain_header*>(node->udata()); |
---|
618 | |
---|
619 | elements_ahead = header->entries; |
---|
620 | |
---|
621 | iter.L.refabspos = header->refabspos; |
---|
622 | iter.L.read_pos = header->entrymem; |
---|
623 | } |
---|
624 | |
---|
625 | set_loc_from_chain(); |
---|
626 | } |
---|
627 | |
---|
628 | operator bool() const { return !at_end_of_chain(); } |
---|
629 | const AbsLoc& at() const { return loc; } |
---|
630 | const ChainIteratorStage1& operator++() { inc(); return *this; } // prefix-inc |
---|
631 | |
---|
632 | int get_elements_ahead() const { return elements_ahead; } |
---|
633 | |
---|
634 | int get_refabspos() const { |
---|
635 | return is_short |
---|
636 | ? iter.S.header->abspos[0] // @@@ returns any abspos, optimize for SHORT_CHAIN_HEADER_ELEMS >= 3 only |
---|
637 | : iter.L.refabspos; |
---|
638 | } |
---|
639 | }; |
---|
640 | |
---|
641 | class ChainIteratorStage2 : virtual Noncopyable { |
---|
642 | const char *data; |
---|
643 | AbsLoc loc; |
---|
644 | |
---|
645 | int refabspos; |
---|
646 | int elements_ahead; |
---|
647 | |
---|
648 | bool at_end_of_chain() const { return elements_ahead<0; } |
---|
649 | void set_loc_from_chain() { |
---|
650 | if (elements_ahead>0) { |
---|
651 | data = PT_READ_CHAIN_ENTRY_stage_2(data, refabspos, loc); |
---|
652 | } |
---|
653 | else { |
---|
654 | pt_assert(elements_ahead == 0); |
---|
655 | loc = AbsLoc(); |
---|
656 | } |
---|
657 | --elements_ahead; |
---|
658 | pt_assert(at_end_of_chain() || loc.has_valid_name()); |
---|
659 | } |
---|
660 | void inc() { |
---|
661 | pt_assert(!at_end_of_chain()); |
---|
662 | set_loc_from_chain(); |
---|
663 | } |
---|
664 | |
---|
665 | public: |
---|
666 | typedef POS_TREE2 POS_TREE_TYPE; |
---|
667 | |
---|
668 | ChainIteratorStage2(const POS_TREE2 *node) |
---|
669 | : data(node->udata()), |
---|
670 | loc(0, 0) // init name with 0 (needed for chain reading in STAGE2) |
---|
671 | { |
---|
672 | pt_assert_stage(STAGE2); |
---|
673 | pt_assert(node->is_chain()); |
---|
674 | |
---|
675 | if (node->flags&1) { refabspos = PT_read_int(data); data += 4; } |
---|
676 | else { refabspos = PT_read_short(data); data += 2; } |
---|
677 | |
---|
678 | elements_ahead = PT_read_compact_nat(data); |
---|
679 | |
---|
680 | pt_assert(elements_ahead>0); // chain cant be empty |
---|
681 | set_loc_from_chain(); |
---|
682 | } |
---|
683 | |
---|
684 | operator bool() const { return !at_end_of_chain(); } |
---|
685 | const AbsLoc& at() const { return loc; } |
---|
686 | const ChainIteratorStage2& operator++() { inc(); return *this; } // prefix-inc |
---|
687 | |
---|
688 | const char *memptr() const { return data; } |
---|
689 | }; |
---|
690 | |
---|
691 | template<typename PT, typename T> int PT_forwhole_chain(PT *node, T& func); |
---|
692 | |
---|
693 | template<typename T> int PT_forwhole_chain(POS_TREE1 *node, T& func) { |
---|
694 | pt_assert_stage(STAGE1); |
---|
695 | int error = 0; |
---|
696 | for (ChainIteratorStage1 entry(node); entry && !error; ++entry) { |
---|
697 | error = func(entry.at()); |
---|
698 | } |
---|
699 | return error; |
---|
700 | } |
---|
701 | |
---|
702 | template<typename T> int PT_forwhole_chain(POS_TREE2 *node, T& func) { |
---|
703 | pt_assert_stage(STAGE2); |
---|
704 | int error = 0; |
---|
705 | for (ChainIteratorStage2 entry(node); entry && !error; ++entry) { |
---|
706 | error = func(entry.at()); |
---|
707 | } |
---|
708 | return error; |
---|
709 | } |
---|
710 | |
---|
711 | #if defined(DEBUG) |
---|
712 | struct PTD_chain_print { |
---|
713 | int operator()(const AbsLoc& loc) { loc.dump(stdout); return 0; } |
---|
714 | }; |
---|
715 | #endif |
---|
716 | |
---|
717 | #else |
---|
718 | #error probe_tree.h included twice |
---|
719 | #endif // PROBE_TREE_H |
---|