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1 "{ Package: 'stx:goodies/petitparser/parsers/smalltalk' }" |
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2 |
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3 PPTokenParser subclass:#PPSmalltalkTokenParser |
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4 instanceVariableNames:'' |
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5 classVariableNames:'SeparatorPredicate' |
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6 poolDictionaries:'' |
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7 category:'PetitSmalltalk-Core' |
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8 ! |
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9 |
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10 PPSmalltalkTokenParser comment:'A parser that knows how to skip comments and whitespace in Smalltalk and how to instantiate tokens.' |
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11 ! |
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12 |
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13 |
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14 !PPSmalltalkTokenParser class methodsFor:'initialization'! |
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15 |
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16 initialize |
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17 SeparatorPredicate := PPCharSetPredicate on: [ :char | char isSeparator ] |
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18 ! ! |
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19 |
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20 !PPSmalltalkTokenParser methodsFor:'parsing'! |
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21 |
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22 parseComments: anArray on: aPPContext |
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23 | start comments | |
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24 comments := anArray. |
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25 [ [ aPPContext atEnd not and: [ SeparatorPredicate value: aPPContext uncheckedPeek ] ] |
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26 whileTrue: [ aPPContext next ]. |
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27 aPPContext atEnd not and: [ aPPContext uncheckedPeek = $" ] ] whileTrue: [ |
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28 aPPContext next. |
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29 start := aPPContext position. |
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30 aPPContext upTo: $". |
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31 comments := comments copyWith: (start to: aPPContext position) ]. |
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32 ^ comments |
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33 ! |
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34 |
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35 parseOn: aPPContext |
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36 | memento comments token | |
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37 memento := aPPContext remember. |
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38 comments := self |
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39 parseComments: #() |
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40 on: aPPContext. |
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41 token := super parseOn: aPPContext. |
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42 token isPetitFailure ifTrue: [ |
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43 aPPContext restore: memento. |
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44 ^ token ]. |
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45 comments := self |
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46 parseComments: comments |
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47 on: aPPContext. |
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48 ^ token comments: comments |
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49 ! ! |
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50 |
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51 !PPSmalltalkTokenParser methodsFor:'private'! |
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52 |
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53 defaultTokenClass |
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54 ^ PPSmalltalkToken |
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55 ! ! |
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56 |
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57 !PPSmalltalkTokenParser class methodsFor:'documentation'! |
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58 |
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59 version_HG |
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60 |
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61 ^ '$Changeset: <not expanded> $' |
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62 ! ! |
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63 |
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64 |
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65 PPSmalltalkTokenParser initialize! |