1 "{ Package: 'stx:goodies/petitparser/compiler/tests' }" |
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2 |
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3 "{ NameSpace: Smalltalk }" |
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4 |
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5 PPCompositeParser subclass:#PPLL1ExpressionGrammar |
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6 instanceVariableNames:'add prod term mul prim parens number mulPrime addPrime termPrime' |
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7 classVariableNames:'' |
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8 poolDictionaries:'' |
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9 category:'PetitCompiler-Tests-ExpressionGrammar' |
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10 ! |
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11 |
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12 !PPLL1ExpressionGrammar methodsFor:'as yet unclassified'! |
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13 |
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14 add |
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15 ^ prod, addPrime optional |
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16 map: [ :_prod :_addPrime | |
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17 _addPrime isNil |
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18 ifTrue: [ _prod ] |
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19 ifFalse: [ (Array with: _prod) , _addPrime ] |
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20 |
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21 ] |
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22 |
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23 "Modified: / 12-05-2015 / 01:35:12 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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24 ! |
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25 |
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26 addPrime |
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27 ^ $+ asParser trimmingToken , term |
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28 ! |
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29 |
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30 mul |
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31 ^ prim, mulPrime optional |
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32 map: [ :_prim :_mulPrime | |
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33 _mulPrime isNil |
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34 ifTrue: [ _prim ] |
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35 ifFalse: [ (Array with: _prim) , _mulPrime ] |
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36 |
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37 ] |
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38 |
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39 "Modified: / 12-05-2015 / 01:35:24 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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40 ! |
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41 |
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42 mulPrime |
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43 ^ $* asParser trimmingToken, prod |
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44 ! |
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45 |
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46 number |
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47 ^ #digit asParser plus trimmingToken ==> [ :token | token inputValue asNumber ] |
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48 ! |
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49 |
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50 parens |
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51 ^ ($( asParser token trim), term , ($) asParser token trim) |
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52 ! |
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53 |
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54 prim |
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55 ^ parens / number |
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56 ! |
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57 |
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58 prod |
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59 ^ mul |
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60 ! |
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61 |
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62 start |
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63 ^ term end |
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64 ! |
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65 |
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66 term |
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67 ^ prod, termPrime optional |
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68 map: [ :_prod :_termPrime | |
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69 _termPrime isNil |
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70 ifTrue: [ _prod ] |
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71 ifFalse: [ (Array with: _prod) , _termPrime ] |
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72 ] |
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73 |
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74 "Modified: / 12-05-2015 / 01:36:18 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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75 ! |
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76 |
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77 termPrime |
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78 ^ $+ asParser trimmingToken, term |
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79 ! ! |
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80 |
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