<commit_before>
from pycket.ast_visitor import ASTVisitor
from pycket.env         import SymList
from pycket.interpreter import (
    App,
    Begin,
    Begin0,
    BeginForSyntax,
    CaseLambda,
    Cell,
    CellRef,
    DefineValues,
    If,
    Lambda,
    Let,
    Letrec,
    LexicalVar,
    Module,
    ModuleVar,
    Quote,
    QuoteSyntax,
    Require,
    SetBang,
    ToplevelVar,
    VariableReference,
    WithContinuationMark,
    variable_set,
)

class AssignConvertVisitor(ASTVisitor):

    def visit_cell_ref(self, ast, vars, env_structure):
        assert isinstance(ast, CellRef)
        return CellRef(ast.sym, env_structure)

    def visit_lexical_var(self, ast, vars, env_structure):
        assert isinstance(ast, LexicalVar)
        if ast in vars:
            return CellRef(ast.sym, env_structure)
        else:<commit_msg>Some documentation<commit_after>
from pycket.ast_visitor import ASTVisitor
from pycket.env         import SymList
from pycket.interpreter import (
    App,
    Begin,
    Begin0,
    BeginForSyntax,
    CaseLambda,
    Cell,
    CellRef,
    DefineValues,
    If,
    Lambda,
    Let,
    Letrec,
    LexicalVar,
    Module,
    ModuleVar,
    Quote,
    QuoteSyntax,
    Require,
    SetBang,
    ToplevelVar,
    VariableReference,
    WithContinuationMark,
    variable_set,
)

class AssignConvertVisitor(ASTVisitor):
    """
    This visitor performs assignment conversion of the Pycket AST, which is
    necessary in order to interpret the AST.

    This pass also performs something akin to liveness analysis, trying to reduce
    the sizes of environment frames by removing cells unreferenced by an expression.
    """

    def visit_cell_ref(self, ast, vars, env_structure):
        assert isinstance(ast, CellRef)
        return CellRef(ast.sym, env_structure)

    def visit_lexical_var(self, ast, vars, env_structure):
        assert isinstance(ast, LexicalVar)
        if ast in vars:
            return CellRef(ast.sym, env_structure)
        else:
{'fraction_non_alphanumeric': 0.06660039761431412, 'fraction_numerical': 0.0009940357852882703, 'mean_word_length': 2.7346938775510203, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4087117', 'n_tokens_mistral': 623, 'n_tokens_neox': 597, 'n_words': 170}