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1 "{ Package: 'stx:goodies/petitparser/devtools' }" |
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2 |
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3 PPParserVisitor subclass:#PPPrinter |
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4 instanceVariableNames:'stream root' |
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5 classVariableNames:'' |
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6 poolDictionaries:'' |
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7 category:'PetitParser-Utils' |
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8 ! |
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9 |
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10 |
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11 !PPPrinter class methodsFor:'instance creation'! |
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12 |
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13 new |
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14 "return an initialized instance" |
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15 |
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16 ^ self basicNew initialize. |
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17 ! ! |
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18 |
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19 !PPPrinter class methodsFor:'printing'! |
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20 |
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21 print: parser |
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22 ^self new print: parser. |
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23 |
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24 "Created: / 11-01-2013 / 09:51:05 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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25 ! ! |
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26 |
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27 !PPPrinter methodsFor:'accessing'! |
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28 |
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29 stream |
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30 ^ stream |
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31 ! |
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32 |
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33 stream:something |
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34 stream := something. |
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35 ! ! |
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36 |
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37 !PPPrinter methodsFor:'initialization'! |
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38 |
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39 initialize |
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40 stream := String new writeStream. |
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41 root := nil. |
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42 |
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43 "Modified: / 11-01-2013 / 09:21:44 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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44 ! ! |
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45 |
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46 !PPPrinter methodsFor:'printing'! |
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47 |
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48 print: parser |
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49 self visit: parser. |
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50 ^stream contents |
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51 |
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52 "Created: / 11-01-2013 / 09:51:26 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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53 ! ! |
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54 |
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55 !PPPrinter methodsFor:'visiting'! |
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56 |
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57 visit:anObject |
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58 "visit anObject (visitor pattern). |
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59 The object should call back one of my visitXXXX methods." |
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60 |
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61 anObject name notNil ifTrue:[ |
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62 stream nextPutAll: anObject name. |
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63 root isNil ifTrue:[ |
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64 stream cr; cr; tab. |
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65 stream nextPut: $^. |
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66 root := anObject. |
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67 anObject acceptVisitor:self. |
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68 ]. |
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69 ^self |
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70 ]. |
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71 stream nextPut:$(. |
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72 anObject acceptVisitor:self. |
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73 stream nextPut:$) |
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74 |
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75 "Created: / 11-01-2013 / 09:17:06 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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76 ! |
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77 |
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78 visitPPChoiceParser:anObject |
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79 "dispatched back from the visited pPChoiceParser-object (visitor pattern)" |
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80 |
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81 "fall back to general object-case - please change as required" |
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82 |
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83 root == anObject ifTrue:[stream space]. |
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84 |
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85 anObject children |
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86 do: [:parser|self visit: parser. root == anObject ifTrue:[stream cr; tab] ifFalse:[stream space]] |
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87 separatedBy:[stream nextPutAll: '/ ']. |
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88 |
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89 "Created: / 11-01-2013 / 09:18:59 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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90 ! |
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91 |
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92 visitPPEpsilonParser:anObject |
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93 stream nextPutAll: 'nil asParser' |
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94 |
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95 "Created: / 11-01-2013 / 09:34:14 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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96 ! |
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97 |
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98 visitPPLiteralObjectParser:anObject |
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99 self visitPPLiteralParser: anObject |
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100 |
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101 "Created: / 11-01-2013 / 09:29:29 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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102 ! |
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103 |
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104 visitPPLiteralParser:anObject |
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105 anObject literal storeOn: stream. |
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106 stream nextPutAll: ' asParser' |
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107 |
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108 "Created: / 11-01-2013 / 09:29:50 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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109 ! |
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110 |
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111 visitPPLiteralSequenceParser:anObject |
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112 self visitPPLiteralParser: anObject |
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113 |
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114 "Created: / 11-01-2013 / 09:29:18 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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115 ! |
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116 |
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117 visitPPOptionalParser:anObject |
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118 self visit: anObject children anElement. |
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119 stream nextPutAll: ' optional'. |
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120 |
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121 "Created: / 11-01-2013 / 09:27:32 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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122 ! |
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123 |
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124 visitPPPredicateObjectParser:anObject |
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125 stream nextPutAll: '(self error: ''Cannot print predicate object parsers'')' |
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126 |
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127 "Created: / 11-01-2013 / 09:32:17 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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128 ! |
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129 |
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130 visitPPRepeatingParser:anObject |
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131 self visit: anObject children anElement. |
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132 (anObject min == 0 and:[anObject max = SmallInteger maxVal]) ifTrue:[ |
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133 stream nextPutAll:' star'. |
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134 ^self. |
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135 ]. |
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136 (anObject min == 1 and:[anObject max = SmallInteger maxVal]) ifTrue:[ |
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137 stream nextPutAll:' plus'. |
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138 ^self. |
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139 ]. |
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140 |
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141 stream |
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142 nextPutAll:' min: '; |
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143 nextPutAll: anObject min printString; |
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144 nextPutAll:' max: '; |
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145 nextPutAll: anObject max printString |
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146 |
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147 "Created: / 11-01-2013 / 09:27:01 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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148 ! |
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149 |
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150 visitPPSequenceParser:anObject |
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151 "dispatched back from the visited pPSequenceParser-object (visitor pattern)" |
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152 |
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153 anObject children |
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154 do: [:parser|self visit: parser] |
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155 separatedBy:[stream nextPutAll: ' , ']. |
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156 |
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157 "Created: / 11-01-2013 / 09:18:32 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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158 ! |
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159 |
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160 visitPPUnresolvedParser:anObject |
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161 stream nextPutAll: '(self error: ''Unresolved'')' |
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162 |
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163 "Created: / 11-01-2013 / 09:33:35 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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164 ! ! |
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165 |
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166 !PPPrinter class methodsFor:'documentation'! |
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167 |
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168 version |
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169 ^ '$Header: /cvs/stx/stx/goodies/petitparser/devtools/PPPrinter.st,v 1.1 2013-01-11 09:57:40 vrany Exp $' |
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170 ! |
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171 |
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172 version_CVS |
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173 ^ '$Header: /cvs/stx/stx/goodies/petitparser/devtools/PPPrinter.st,v 1.1 2013-01-11 09:57:40 vrany Exp $' |
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174 ! ! |