paul@353 | 1 | AST Node Annotations
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paul@353 | 2 | ====================
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paul@353 | 3 |
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paul@603 | 4 | These annotations are defined in the revised compiler.ast classes.
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paul@498 | 5 |
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paul@646 | 6 | Deduction Results
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paul@646 | 7 | -----------------
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paul@646 | 8 |
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paul@669 | 9 | _access_type ("constant", "static", "positioned", "instance")
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paul@669 | 10 | defines the kind of access involved for a particular node
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paul@646 | 11 | and determines which of the following annotations will be
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paul@646 | 12 | employed
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paul@669 | 13 | _value_deduced (_access_type is "constant")
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paul@669 | 14 | defines a specific result associated with an attribute
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paul@646 | 15 | access during deduction and based on inspection results
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paul@669 | 16 | _attr_deduced (_access_type is "static" or "instance")
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paul@669 | 17 | defines an attribute result according to deduction based
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paul@646 | 18 | on inspection results, with the accessor being the parent
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paul@646 | 19 | defined in this object for static attributes
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paul@669 | 20 | _position_deduced (_access_type is "positioned")
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paul@669 | 21 | defines a common position employed by all deduced
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paul@646 | 22 | attributes for an access operation which is relative to
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paul@646 | 23 | the accessor evaluated at run time
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paul@646 | 24 | _set_context indicates the deduced effect on the context in an access
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paul@646 | 25 | operation, whether the context would be replaced
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paul@646 | 26 | unconditionally or conditionally
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paul@646 | 27 |
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paul@646 | 28 | _attrs_deduced_from_usage
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paul@646 | 29 | _attrs_deduced
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paul@646 | 30 | provided as additional annotations more suitable for
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paul@646 | 31 | report generation than code generation, since they
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paul@646 | 32 | describe a range of deduced attributes for a given node,
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paul@646 | 33 | but such ranges may not lend themselves to the generation
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paul@646 | 34 | of optimised code
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paul@646 | 35 |
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paul@556 | 36 | Evaluation Results
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paul@556 | 37 | ------------------
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paul@556 | 38 |
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paul@669 | 39 | _attr (may identify static attributes for classes and modules,
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paul@669 | 40 | is otherwise given as a general instance)
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paul@669 | 41 | notes the result associated with an attribute access
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paul@664 | 42 | operation during inspection; this may be a general
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paul@664 | 43 | instance providing no specific information about the
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paul@664 | 44 | nature of an attribute
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paul@603 | 45 | _expr records the result of evaluating an expression used in an
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paul@603 | 46 | attribute access operation
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paul@556 | 47 |
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paul@388 | 48 | Attribute Users
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paul@388 | 49 | ---------------
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paul@388 | 50 |
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paul@571 | 51 | _attrtypes defines types deduced either from combined attribute usage
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paul@571 | 52 | details (for users)
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paul@571 | 53 |
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paul@571 | 54 | Attribute Contributors
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paul@571 | 55 | ----------------------
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paul@571 | 56 |
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paul@571 | 57 | _attrnames defines a dictionary mapping local names to sets of
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paul@571 | 58 | attribute names found to be used with those names in a
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paul@571 | 59 | branch
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paul@599 | 60 | _attrbranches indicates the immediate contributors to attribute usage
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paul@599 | 61 | known to a node
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paul@599 | 62 | _attrcontributors defines nodes contributing to combined attribute usage known
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paul@599 | 63 | to a node
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paul@599 | 64 | _attrcombined defines a dictionary mapping local names to sets of
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paul@599 | 65 | attribute names found to be used with those names for the
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paul@599 | 66 | entire lifetime of a particular attribute user
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paul@489 | 67 | _attrmerged defines a dictionary mapping local names to sets of
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paul@489 | 68 | attribute names merging combined observations with locally
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paul@489 | 69 | applicable observations, indicating usage specific to a
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paul@489 | 70 | region of the code
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paul@490 | 71 | _attrspecifictypes defines specific types from merged attribute usage details
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paul@490 | 72 | (for non-user nodes)
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paul@488 | 73 | _attrdefs defines definition-related users which consume usage details
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paul@488 | 74 | from the node
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paul@388 | 75 |
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paul@388 | 76 | Attribute Accessors
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paul@388 | 77 | -------------------
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paul@388 | 78 |
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paul@488 | 79 | _attrusers defines a dictionary mapping local names to sets of nodes
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paul@488 | 80 | defining those names
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paul@603 | 81 | _username indicates the name of the attribute user involved in an
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paul@603 | 82 | access operation
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paul@388 | 83 |
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paul@388 | 84 | Name Accessors
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paul@388 | 85 | --------------
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paul@388 | 86 |
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paul@488 | 87 | _scope set as "constant", "local", "global" or "builtins"
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paul@388 | 88 |
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paul@388 | 89 | Program Units
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paul@388 | 90 | -------------
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paul@388 | 91 |
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paul@488 | 92 | unit refers to a micropython Class, Function or Module instance
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