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e4c431ecf5
This is partly a cleanup of the code. It also is preparation for getting the variables from the source (cross-platform) rather than from the symbols. The change only touches the tool (and its tests).
91 lines
2.5 KiB
Python
91 lines
2.5 KiB
Python
import csv
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from ..common.info import ID, UNKNOWN
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from ..common.util import read_tsv
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from .info import Variable
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# XXX need tests:
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# * read_file()
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# * look_up_variable()
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COLUMNS = ('filename', 'funcname', 'name', 'kind', 'declaration')
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HEADER = '\t'.join(COLUMNS)
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def read_file(infile, *,
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_read_tsv=read_tsv,
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):
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"""Yield (kind, id, decl) for each row in the data file.
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The caller is responsible for validating each row.
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"""
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for row in _read_tsv(infile, HEADER):
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filename, funcname, name, kind, declaration = row
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if not funcname or funcname == '-':
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funcname = None
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id = ID(filename, funcname, name)
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yield kind, id, declaration
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def from_file(infile, *,
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handle_var=Variable.from_id,
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_read_file=read_file,
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):
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"""Return the info for known declarations in the given file."""
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known = {
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'variables': {},
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#'types': {},
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#'constants': {},
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#'macros': {},
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}
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for kind, id, decl in _read_file(infile):
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if kind == 'variable':
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values = known['variables']
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value = handle_var(id, decl)
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else:
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raise ValueError(f'unsupported kind in row {row}')
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value.validate()
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values[id] = value
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return known
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def look_up_variable(varid, knownvars, *,
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match_files=(lambda f1, f2: f1 == f2),
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):
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"""Return the known Variable matching the given ID.
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"knownvars" is a mapping of ID to Variable.
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"match_files" is used to verify if two filenames point to
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the same file.
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If no match is found then None is returned.
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"""
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if not knownvars:
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return None
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if varid.funcname == UNKNOWN:
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if not varid.filename or varid.filename == UNKNOWN:
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for varid in knownvars:
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if not varid.funcname:
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continue
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if varid.name == varid.name:
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return knownvars[varid]
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else:
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return None
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else:
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for varid in knownvars:
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if not varid.funcname:
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continue
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if not match_files(varid.filename, varid.filename):
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continue
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if varid.name == varid.name:
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return knownvars[varid]
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else:
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return None
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elif not varid.filename or varid.filename == UNKNOWN:
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raise NotImplementedError
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else:
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return knownvars.get(varid.id)
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