1 | /* emacs edit mode for this file is -*- C++ -*- */ |
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2 | |
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3 | /** |
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4 | * |
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5 | * @file cf_iter_inline.cc |
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6 | * |
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7 | * definition of configurable inline |
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8 | * `CFIterator' methods. |
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9 | * |
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10 | * Hierarchy: canonicalform, utility class |
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11 | * |
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12 | * Header file: cf_iter.h |
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13 | * |
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14 | * See `cf_inline.cc' for a description of "configurable inline |
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15 | * methods". |
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16 | * |
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17 | **/ |
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18 | |
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19 | // check whether we are included or translated and |
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20 | // define `INCL_CF_ITER_INLINE_CC' if we are included |
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21 | #ifdef INCL_CF_ITER_H |
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22 | #define INCL_CF_ITER_INLINE_CC |
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23 | #endif |
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24 | |
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25 | |
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26 | #include "config.h" |
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27 | |
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28 | |
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29 | #include "cf_assert.h" |
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30 | |
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31 | // regular include file |
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32 | #include "canonicalform.h" |
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33 | |
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34 | // temporarily switch off `CF_USE_INLINE' and include |
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35 | // `cf_iter.h' if we are being translated. |
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36 | // `CF_USE_INLINE_SAVE' is used to save the state of |
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37 | // `CF_USE_INLINE'. It is unset after use. |
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38 | #ifndef INCL_CF_ITER_INLINE_CC |
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39 | #ifdef CF_USE_INLINE |
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40 | #define CF_USE_INLINE_SAVE |
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41 | #undef CF_USE_INLINE |
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42 | #endif |
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43 | #include "cf_iter.h" |
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44 | #ifdef CF_USE_INLINE_SAVE |
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45 | #define CF_USE_INLINE |
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46 | #undef CF_USE_INLINE_SAVE |
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47 | #endif |
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48 | #endif /* ! INCL_CF_ITER_INLINE_CC */ |
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49 | |
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50 | // more regular include files |
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51 | #include "int_cf.h" |
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52 | #include "int_poly.h" |
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53 | |
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54 | // set the value of `CF_INLINE' for the following methods and |
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55 | // functions |
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56 | #if defined( CF_USE_INLINE ) && defined( INCL_CF_ITER_INLINE_CC ) |
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57 | #undef CF_INLINE |
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58 | #define CF_INLINE inline |
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59 | #else |
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60 | #undef CF_INLINE |
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61 | #define CF_INLINE |
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62 | #endif /* ! defined( CF_USE_INLINE ) && defined( INCL_CF_ITER_INLINE_CC ) */ |
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63 | |
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64 | #ifndef INCL_CF_ITER_INLINE_CC |
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65 | // selectors |
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66 | /** CF_INLINE int CFIterator::hasTerms () const |
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67 | * |
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68 | * hasTerm() - check whether CO points to a valid term. |
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69 | * |
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70 | * Return true if CO points to a valid term, false if CO points |
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71 | * to the end of the sequence of terms. |
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72 | * |
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73 | **/ |
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74 | CF_INLINE int |
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75 | CFIterator::hasTerms () const |
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76 | { |
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77 | return hasterms; |
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78 | } |
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79 | |
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80 | /** CF_INLINE CanonicalForm CFIterator::coeff () const |
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81 | * |
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82 | * coeff() - return coefficient of current term of CO. |
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83 | * |
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84 | * CO has to point to a valid term. |
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85 | * |
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86 | **/ |
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87 | CF_INLINE CanonicalForm |
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88 | CFIterator::coeff () const |
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89 | { |
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90 | ASSERT( hasterms, "lib error: iterator out of terms" ); |
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91 | if ( ispoly ) |
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92 | return cursor->coeff; |
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93 | else |
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94 | return data; |
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95 | } |
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96 | |
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97 | /** CF_INLINE int CFIterator::exp () const |
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98 | * |
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99 | * exp() - return exponent of current term of CO. |
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100 | * |
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101 | * CO has to point to a valid term. |
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102 | * |
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103 | **/ |
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104 | CF_INLINE int |
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105 | CFIterator::exp () const |
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106 | { |
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107 | ASSERT( hasterms, "lib error: iterator out of terms" ); |
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108 | if ( ispoly ) |
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109 | return cursor->exp; |
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110 | else |
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111 | return 0; |
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112 | } |
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113 | |
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114 | // implementor methods |
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115 | /** CFIterator::operator ++ (), operator ++ ( int ) |
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116 | * |
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117 | * operator ++() - advance CO to next term. |
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118 | * |
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119 | * Advance current term to next term in the sequence of terms or |
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120 | * to end of sequence. CO has to point to a valid term. |
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121 | * |
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122 | * The postfix and prefix operator are identical. |
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123 | * |
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124 | **/ |
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125 | CF_INLINE CFIterator & |
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126 | CFIterator::operator ++ () |
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127 | { |
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128 | ASSERT( hasterms, "lib error: iterator out of terms" ); |
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129 | if ( ispoly ) { |
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130 | cursor = cursor->next; |
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131 | hasterms = cursor != 0; |
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132 | } else |
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133 | hasterms = false; |
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134 | |
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135 | return *this; |
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136 | } |
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137 | |
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138 | /** |
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139 | * @sa CFIterator::operator |
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140 | **/ |
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141 | CF_INLINE CFIterator & |
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142 | CFIterator::operator ++ ( int ) |
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143 | { |
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144 | ASSERT( hasterms, "lib error: iterator out of terms" ); |
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145 | if ( ispoly ) { |
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146 | cursor = cursor->next; |
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147 | hasterms = cursor != 0; |
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148 | } else |
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149 | hasterms = false; |
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150 | |
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151 | return *this; |
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152 | } |
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153 | #endif |
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