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expression_record.py
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expression_record.py
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"""
Wrapper for an `ast.expr` node.
"""
import re
from typing import List, Set
import handsdown.ast_parser.smart_ast as ast
from handsdown.ast_parser.analyzers.expression_analyzer import ExpressionAnalyzer
from handsdown.ast_parser.node_records.node_record import NodeRecord
from handsdown.ast_parser.type_defs import Node, RenderExpr
class ExpressionRecord(NodeRecord):
"""
Wrapper for an `ast.expr` node.
Arguments:
node -- AST node.
"""
_str_split_re = re.compile(r"[\]\[ ,]")
def __init__(self, node: ast.AST) -> None:
super().__init__(node)
self.parts: List[Node] = []
self.analyzer = ExpressionAnalyzer()
@property
def related_names(self) -> Set[str]:
"""
Set of related names.
"""
return set(self.analyzer.related_names)
def _parse(self) -> None:
if isinstance(self.node, ast.Name):
self.name = self.node.id
if isinstance(self.node, ast.AST):
self.analyzer.visit(self.node)
self.parts = self.analyzer.parts
return
def _render_parts(self) -> List[RenderExpr]:
result: List[RenderExpr] = []
for part in self.parts:
if isinstance(part, ast.AST):
result.append(ExpressionRecord(part))
continue
result.append(part)
return result
def render_str(self) -> str:
"""
Render expression to a string.
"""
self.parse()
result = []
for part in self._render_parts():
if isinstance(part, NodeRecord):
result.append(part.render())
if isinstance(part, str):
result.append(part)
return "".join(result)