25 ! ! |
25 ! ! |
26 |
26 |
27 !PPCCompilerTokenizingRememberStrategy methodsFor:'as yet unclassified'! |
27 !PPCCompilerTokenizingRememberStrategy methodsFor:'as yet unclassified'! |
28 |
28 |
29 smartRemember: parser to: variableName |
29 smartRemember: parser to: variableName |
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30 compiler allocateTemporaryVariableNamed: '__position'. |
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31 compiler allocateTemporaryVariableNamed: '__tokenType'. |
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32 compiler allocateTemporaryVariableNamed: '__tokenValue'. |
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33 |
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34 compiler codeAssign: 'context position.' to: '__position'. |
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35 compiler codeAssign: 'currentTokenType.' to: '__tokenType'. |
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36 compiler codeAssign: 'currentTokenValue.' to: '__tokenValue'. |
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37 |
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38 false ifFalse: [ |
30 parser isContextFree ifTrue: [ |
39 parser isContextFree ifTrue: [ |
31 compiler codeAssign: '{ context lwRemember. currentTokenType . currentTokenValue }.' |
40 " compiler codeAssign: '{ context lwRemember. currentTokenType . currentTokenValue }.' " |
32 " compiler codeAssign: 'context lwRemember.' " |
41 compiler codeAssign: 'scanner position.' |
33 to: variableName. |
42 to: variableName. |
34 ] ifFalse: [ |
43 ] ifFalse: [ |
35 compiler codeAssign: '{ context remember. currentTokenType . currentTokenValue }.' |
44 compiler codeAssign: '{ context remember. currentTokenType . currentTokenValue }.' |
36 to: variableName. |
45 to: variableName. |
37 ] |
46 ] |
|
47 ] |
38 ! |
48 ! |
39 |
49 |
40 smartRestore: parser from: mementoName |
50 smartRestore: parser from: mementoName |
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51 compiler add: 'context lwRestore: __position.'. |
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52 compiler codeAssign: '__tokenType.' to: 'currentTokenType'. |
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53 compiler codeAssign: '__tokenValue.' to: 'currentTokenValue'. |
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54 |
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55 |
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56 false ifTrue: [ |
41 parser isContextFree ifTrue: [ |
57 parser isContextFree ifTrue: [ |
42 compiler add: 'context lwRestore: (', mementoName, ' at: 1).'. |
58 " compiler add: 'context lwRestore: (', mementoName, ' at: 1).'." |
43 " compiler add: 'context lwRestore: ', mementoName, '.'." |
59 compiler add: 'context lwRestore: ', mementoName, '.'. |
44 ] ifFalse: [ |
60 ] ifFalse: [ |
45 compiler add: 'context restore: (', mementoName, ' at: 1).'. |
61 compiler add: 'context restore: (', mementoName, ' at: 1).'. |
46 ]. |
62 ]. |
47 |
63 |
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64 compiler codeAssign: 'nil.' to: 'currentTokenType'. |
|
65 " |
48 compiler codeAssign: '(', mementoName, ' at: 2).' to: 'currentTokenType'. |
66 compiler codeAssign: '(', mementoName, ' at: 2).' to: 'currentTokenType'. |
49 compiler codeAssign: '(', mementoName, ' at: 3).' to: 'currentTokenValue'. |
67 compiler codeAssign: '(', mementoName, ' at: 3).' to: 'currentTokenValue'. |
|
68 " |
|
69 " |
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70 compiler code: 'scanner backtrack.'. |
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71 " |
50 |
72 |
|
73 ] |
51 ! ! |
74 ! ! |
52 |
75 |
53 !PPCCompilerTokenizingRememberStrategy class methodsFor:'documentation'! |
76 !PPCCompilerTokenizingRememberStrategy class methodsFor:'documentation'! |
54 |
77 |
55 version_HG |
78 version_HG |