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619 lines
22 KiB
619 lines
22 KiB
# SPDX-License-Identifier: Apache-2.0 |
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# Copyright 2019 The Meson development team |
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# This class contains the basic functionality needed to run any interpreter |
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# or an interpreter-based tool |
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from __future__ import annotations |
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from .. import mparser |
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from .visitor import AstVisitor |
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from itertools import zip_longest |
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import re |
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import typing as T |
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arithmic_map = { |
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'add': '+', |
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'sub': '-', |
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'mod': '%', |
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'mul': '*', |
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'div': '/' |
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} |
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class AstPrinter(AstVisitor): |
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def __init__(self, indent: int = 2, arg_newline_cutoff: int = 5, update_ast_line_nos: bool = False): |
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self.result = '' |
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self.indent = indent |
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self.arg_newline_cutoff = arg_newline_cutoff |
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self.ci = '' |
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self.is_newline = True |
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self.last_level = 0 |
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self.curr_line = 1 if update_ast_line_nos else None |
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def post_process(self) -> None: |
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self.result = re.sub(r'\s+\n', '\n', self.result) |
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def append(self, data: str, node: mparser.BaseNode) -> None: |
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self.last_level = node.level |
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if self.is_newline: |
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self.result += ' ' * (node.level * self.indent) |
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self.result += data |
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self.is_newline = False |
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def append_padded(self, data: str, node: mparser.BaseNode) -> None: |
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if self.result and self.result[-1] not in [' ', '\n']: |
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data = ' ' + data |
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self.append(data + ' ', node) |
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def newline(self) -> None: |
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self.result += '\n' |
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self.is_newline = True |
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if self.curr_line is not None: |
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self.curr_line += 1 |
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def visit_BooleanNode(self, node: mparser.BooleanNode) -> None: |
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self.append('true' if node.value else 'false', node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_IdNode(self, node: mparser.IdNode) -> None: |
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assert isinstance(node.value, str) |
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self.append(node.value, node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_NumberNode(self, node: mparser.NumberNode) -> None: |
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self.append(str(node.value), node) |
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node.lineno = self.curr_line or node.lineno |
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def escape(self, val: str) -> str: |
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return val.translate(str.maketrans(T.cast( |
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'T.Dict[str, T.Union[str, int]]', |
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{'\'': '\\\'', '\\': '\\\\'}))) |
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def visit_StringNode(self, node: mparser.StringNode) -> None: |
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assert isinstance(node.value, str) |
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self.append("'" + self.escape(node.value) + "'", node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_FormatStringNode(self, node: mparser.FormatStringNode) -> None: |
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assert isinstance(node.value, str) |
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self.append("f'" + self.escape(node.value) + "'", node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_MultilineStringNode(self, node: mparser.MultilineFormatStringNode) -> None: |
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assert isinstance(node.value, str) |
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self.append("'''" + node.value + "'''", node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_FormatMultilineStringNode(self, node: mparser.FormatStringNode) -> None: |
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assert isinstance(node.value, str) |
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self.append("f'''" + node.value + "'''", node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_ContinueNode(self, node: mparser.ContinueNode) -> None: |
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self.append('continue', node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_BreakNode(self, node: mparser.BreakNode) -> None: |
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self.append('break', node) |
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node.lineno = self.curr_line or node.lineno |
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def visit_ArrayNode(self, node: mparser.ArrayNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append('[', node) |
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node.args.accept(self) |
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self.append(']', node) |
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def visit_DictNode(self, node: mparser.DictNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append('{', node) |
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node.args.accept(self) |
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self.append('}', node) |
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def visit_OrNode(self, node: mparser.OrNode) -> None: |
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node.left.accept(self) |
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self.append_padded('or', node) |
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node.lineno = self.curr_line or node.lineno |
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node.right.accept(self) |
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def visit_AndNode(self, node: mparser.AndNode) -> None: |
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node.left.accept(self) |
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self.append_padded('and', node) |
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node.lineno = self.curr_line or node.lineno |
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node.right.accept(self) |
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def visit_ComparisonNode(self, node: mparser.ComparisonNode) -> None: |
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node.left.accept(self) |
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self.append_padded(node.ctype, node) |
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node.lineno = self.curr_line or node.lineno |
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node.right.accept(self) |
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def visit_ArithmeticNode(self, node: mparser.ArithmeticNode) -> None: |
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node.left.accept(self) |
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self.append_padded(arithmic_map[node.operation], node) |
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node.lineno = self.curr_line or node.lineno |
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node.right.accept(self) |
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def visit_NotNode(self, node: mparser.NotNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append_padded('not', node) |
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node.value.accept(self) |
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def visit_CodeBlockNode(self, node: mparser.CodeBlockNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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for i in node.lines: |
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i.accept(self) |
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self.newline() |
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def visit_IndexNode(self, node: mparser.IndexNode) -> None: |
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node.iobject.accept(self) |
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node.lineno = self.curr_line or node.lineno |
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self.append('[', node) |
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node.index.accept(self) |
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self.append(']', node) |
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def visit_MethodNode(self, node: mparser.MethodNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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node.source_object.accept(self) |
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self.append('.' + node.name.value + '(', node) |
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node.args.accept(self) |
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self.append(')', node) |
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def visit_FunctionNode(self, node: mparser.FunctionNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append(node.func_name.value + '(', node) |
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node.args.accept(self) |
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self.append(')', node) |
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def visit_AssignmentNode(self, node: mparser.AssignmentNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append(node.var_name.value + ' = ', node) |
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node.value.accept(self) |
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def visit_PlusAssignmentNode(self, node: mparser.PlusAssignmentNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append(node.var_name.value + ' += ', node) |
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node.value.accept(self) |
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def visit_ForeachClauseNode(self, node: mparser.ForeachClauseNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append_padded('foreach', node) |
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self.append_padded(', '.join(varname.value for varname in node.varnames), node) |
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self.append_padded(':', node) |
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node.items.accept(self) |
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self.newline() |
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node.block.accept(self) |
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self.append('endforeach', node) |
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def visit_IfClauseNode(self, node: mparser.IfClauseNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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prefix = '' |
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for i in node.ifs: |
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self.append_padded(prefix + 'if', node) |
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prefix = 'el' |
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i.accept(self) |
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if not isinstance(node.elseblock, mparser.EmptyNode): |
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self.append('else', node) |
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node.elseblock.accept(self) |
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self.append('endif', node) |
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def visit_UMinusNode(self, node: mparser.UMinusNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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self.append_padded('-', node) |
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node.value.accept(self) |
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def visit_IfNode(self, node: mparser.IfNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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node.condition.accept(self) |
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self.newline() |
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node.block.accept(self) |
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def visit_TernaryNode(self, node: mparser.TernaryNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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node.condition.accept(self) |
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self.append_padded('?', node) |
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node.trueblock.accept(self) |
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self.append_padded(':', node) |
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node.falseblock.accept(self) |
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def visit_ArgumentNode(self, node: mparser.ArgumentNode) -> None: |
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node.lineno = self.curr_line or node.lineno |
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break_args = (len(node.arguments) + len(node.kwargs)) > self.arg_newline_cutoff |
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for i in node.arguments + list(node.kwargs.values()): |
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if not isinstance(i, (mparser.ElementaryNode, mparser.IndexNode)): |
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break_args = True |
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if break_args: |
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self.newline() |
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for i in node.arguments: |
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i.accept(self) |
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self.append(', ', node) |
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if break_args: |
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self.newline() |
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for key, val in node.kwargs.items(): |
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key.accept(self) |
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self.append_padded(':', node) |
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val.accept(self) |
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self.append(', ', node) |
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if break_args: |
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self.newline() |
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if break_args: |
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self.result = re.sub(r', \n$', '\n', self.result) |
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else: |
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self.result = re.sub(r', $', '', self.result) |
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class RawPrinter(AstVisitor): |
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def __init__(self) -> None: |
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self.result = '' |
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def visit_default_func(self, node: mparser.BaseNode) -> None: |
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# XXX: this seems like it could never actually be reached... |
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self.result += node.value # type: ignore[attr-defined] |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_unary_operator(self, node: mparser.UnaryOperatorNode) -> None: |
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node.operator.accept(self) |
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node.value.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_binary_operator(self, node: mparser.BinaryOperatorNode) -> None: |
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node.left.accept(self) |
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node.operator.accept(self) |
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node.right.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_BooleanNode(self, node: mparser.BooleanNode) -> None: |
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self.result += 'true' if node.value else 'false' |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_NumberNode(self, node: mparser.NumberNode) -> None: |
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self.result += node.raw_value |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_StringNode(self, node: mparser.StringNode) -> None: |
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self.result += f"'{node.raw_value}'" |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_MultilineStringNode(self, node: mparser.MultilineStringNode) -> None: |
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self.result += f"'''{node.value}'''" |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_FormatStringNode(self, node: mparser.FormatStringNode) -> None: |
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self.result += 'f' |
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self.visit_StringNode(node) |
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def visit_MultilineFormatStringNode(self, node: mparser.MultilineFormatStringNode) -> None: |
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self.result += 'f' |
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self.visit_MultilineStringNode(node) |
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def visit_ContinueNode(self, node: mparser.ContinueNode) -> None: |
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self.result += 'continue' |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_BreakNode(self, node: mparser.BreakNode) -> None: |
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self.result += 'break' |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_ArrayNode(self, node: mparser.ArrayNode) -> None: |
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node.lbracket.accept(self) |
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node.args.accept(self) |
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node.rbracket.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_DictNode(self, node: mparser.DictNode) -> None: |
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node.lcurl.accept(self) |
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node.args.accept(self) |
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node.rcurl.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_ParenthesizedNode(self, node: mparser.ParenthesizedNode) -> None: |
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node.lpar.accept(self) |
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node.inner.accept(self) |
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node.rpar.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_OrNode(self, node: mparser.OrNode) -> None: |
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self.visit_binary_operator(node) |
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def visit_AndNode(self, node: mparser.AndNode) -> None: |
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self.visit_binary_operator(node) |
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def visit_ComparisonNode(self, node: mparser.ComparisonNode) -> None: |
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self.visit_binary_operator(node) |
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def visit_ArithmeticNode(self, node: mparser.ArithmeticNode) -> None: |
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self.visit_binary_operator(node) |
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def visit_NotNode(self, node: mparser.NotNode) -> None: |
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self.visit_unary_operator(node) |
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def visit_CodeBlockNode(self, node: mparser.CodeBlockNode) -> None: |
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if node.pre_whitespaces: |
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node.pre_whitespaces.accept(self) |
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for i in node.lines: |
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i.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_IndexNode(self, node: mparser.IndexNode) -> None: |
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node.iobject.accept(self) |
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node.lbracket.accept(self) |
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node.index.accept(self) |
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node.rbracket.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_MethodNode(self, node: mparser.MethodNode) -> None: |
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node.source_object.accept(self) |
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node.dot.accept(self) |
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node.name.accept(self) |
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node.lpar.accept(self) |
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node.args.accept(self) |
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node.rpar.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_FunctionNode(self, node: mparser.FunctionNode) -> None: |
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node.func_name.accept(self) |
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node.lpar.accept(self) |
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node.args.accept(self) |
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node.rpar.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_AssignmentNode(self, node: mparser.AssignmentNode) -> None: |
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node.var_name.accept(self) |
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node.operator.accept(self) |
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node.value.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_PlusAssignmentNode(self, node: mparser.PlusAssignmentNode) -> None: |
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node.var_name.accept(self) |
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node.operator.accept(self) |
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node.value.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_ForeachClauseNode(self, node: mparser.ForeachClauseNode) -> None: |
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node.foreach_.accept(self) |
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for varname, comma in zip_longest(node.varnames, node.commas): |
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varname.accept(self) |
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if comma is not None: |
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comma.accept(self) |
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node.column.accept(self) |
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node.items.accept(self) |
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node.block.accept(self) |
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node.endforeach.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_IfClauseNode(self, node: mparser.IfClauseNode) -> None: |
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for i in node.ifs: |
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i.accept(self) |
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if not isinstance(node.elseblock, mparser.EmptyNode): |
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node.elseblock.accept(self) |
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node.endif.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_UMinusNode(self, node: mparser.UMinusNode) -> None: |
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self.visit_unary_operator(node) |
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def visit_IfNode(self, node: mparser.IfNode) -> None: |
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node.if_.accept(self) |
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node.condition.accept(self) |
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node.block.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_ElseNode(self, node: mparser.ElseNode) -> None: |
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node.else_.accept(self) |
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node.block.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_TernaryNode(self, node: mparser.TernaryNode) -> None: |
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node.condition.accept(self) |
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node.questionmark.accept(self) |
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node.trueblock.accept(self) |
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node.column.accept(self) |
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node.falseblock.accept(self) |
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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def visit_ArgumentNode(self, node: mparser.ArgumentNode) -> None: |
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commas_iter = iter(node.commas) |
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for arg in node.arguments: |
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arg.accept(self) |
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try: |
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comma = next(commas_iter) |
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comma.accept(self) |
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except StopIteration: |
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pass |
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assert len(node.columns) == len(node.kwargs) |
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for (key, val), column in zip(node.kwargs.items(), node.columns): |
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key.accept(self) |
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column.accept(self) |
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val.accept(self) |
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try: |
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comma = next(commas_iter) |
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comma.accept(self) |
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except StopIteration: |
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pass |
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|
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if node.whitespaces: |
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node.whitespaces.accept(self) |
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|
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class AstJSONPrinter(AstVisitor): |
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def __init__(self) -> None: |
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self.result: T.Dict[str, T.Any] = {} |
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self.current = self.result |
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def _accept(self, key: str, node: mparser.BaseNode) -> None: |
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old = self.current |
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data: T.Dict[str, T.Any] = {} |
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self.current = data |
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node.accept(self) |
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self.current = old |
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self.current[key] = data |
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def _accept_list(self, key: str, nodes: T.Sequence[mparser.BaseNode]) -> None: |
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old = self.current |
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datalist: T.List[T.Dict[str, T.Any]] = [] |
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for i in nodes: |
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self.current = {} |
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i.accept(self) |
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datalist += [self.current] |
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self.current = old |
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self.current[key] = datalist |
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def _raw_accept(self, node: mparser.BaseNode, data: T.Dict[str, T.Any]) -> None: |
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old = self.current |
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self.current = data |
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node.accept(self) |
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self.current = old |
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def setbase(self, node: mparser.BaseNode) -> None: |
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self.current['node'] = type(node).__name__ |
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self.current['lineno'] = node.lineno |
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self.current['colno'] = node.colno |
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self.current['end_lineno'] = node.end_lineno |
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self.current['end_colno'] = node.end_colno |
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def visit_default_func(self, node: mparser.BaseNode) -> None: |
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self.setbase(node) |
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def gen_ElementaryNode(self, node: mparser.ElementaryNode) -> None: |
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self.current['value'] = node.value |
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self.setbase(node) |
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def visit_BooleanNode(self, node: mparser.BooleanNode) -> None: |
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self.gen_ElementaryNode(node) |
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def visit_IdNode(self, node: mparser.IdNode) -> None: |
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self.gen_ElementaryNode(node) |
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def visit_NumberNode(self, node: mparser.NumberNode) -> None: |
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self.gen_ElementaryNode(node) |
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def visit_StringNode(self, node: mparser.StringNode) -> None: |
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self.gen_ElementaryNode(node) |
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def visit_FormatStringNode(self, node: mparser.FormatStringNode) -> None: |
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self.gen_ElementaryNode(node) |
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|
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def visit_ArrayNode(self, node: mparser.ArrayNode) -> None: |
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self._accept('args', node.args) |
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self.setbase(node) |
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def visit_DictNode(self, node: mparser.DictNode) -> None: |
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self._accept('args', node.args) |
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self.setbase(node) |
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def visit_OrNode(self, node: mparser.OrNode) -> None: |
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self._accept('left', node.left) |
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self._accept('right', node.right) |
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self.setbase(node) |
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def visit_AndNode(self, node: mparser.AndNode) -> None: |
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self._accept('left', node.left) |
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self._accept('right', node.right) |
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self.setbase(node) |
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def visit_ComparisonNode(self, node: mparser.ComparisonNode) -> None: |
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self._accept('left', node.left) |
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self._accept('right', node.right) |
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self.current['ctype'] = node.ctype |
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self.setbase(node) |
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def visit_ArithmeticNode(self, node: mparser.ArithmeticNode) -> None: |
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self._accept('left', node.left) |
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self._accept('right', node.right) |
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self.current['op'] = arithmic_map[node.operation] |
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self.setbase(node) |
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def visit_NotNode(self, node: mparser.NotNode) -> None: |
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self._accept('right', node.value) |
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self.setbase(node) |
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def visit_CodeBlockNode(self, node: mparser.CodeBlockNode) -> None: |
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self._accept_list('lines', node.lines) |
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self.setbase(node) |
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def visit_IndexNode(self, node: mparser.IndexNode) -> None: |
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self._accept('object', node.iobject) |
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self._accept('index', node.index) |
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self.setbase(node) |
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def visit_MethodNode(self, node: mparser.MethodNode) -> None: |
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self._accept('object', node.source_object) |
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self._accept('args', node.args) |
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self.current['name'] = node.name.value |
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self.setbase(node) |
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def visit_FunctionNode(self, node: mparser.FunctionNode) -> None: |
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self._accept('args', node.args) |
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self.current['name'] = node.func_name.value |
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self.setbase(node) |
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def visit_AssignmentNode(self, node: mparser.AssignmentNode) -> None: |
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self._accept('value', node.value) |
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self.current['var_name'] = node.var_name.value |
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self.setbase(node) |
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def visit_PlusAssignmentNode(self, node: mparser.PlusAssignmentNode) -> None: |
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self._accept('value', node.value) |
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self.current['var_name'] = node.var_name.value |
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self.setbase(node) |
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def visit_ForeachClauseNode(self, node: mparser.ForeachClauseNode) -> None: |
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self._accept('items', node.items) |
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self._accept('block', node.block) |
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self.current['varnames'] = [varname.value for varname in node.varnames] |
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self.setbase(node) |
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def visit_IfClauseNode(self, node: mparser.IfClauseNode) -> None: |
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self._accept_list('ifs', node.ifs) |
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self._accept('else', node.elseblock) |
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self.setbase(node) |
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def visit_UMinusNode(self, node: mparser.UMinusNode) -> None: |
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self._accept('right', node.value) |
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self.setbase(node) |
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def visit_IfNode(self, node: mparser.IfNode) -> None: |
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self._accept('condition', node.condition) |
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self._accept('block', node.block) |
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self.setbase(node) |
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def visit_TernaryNode(self, node: mparser.TernaryNode) -> None: |
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self._accept('condition', node.condition) |
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self._accept('true', node.trueblock) |
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self._accept('false', node.falseblock) |
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self.setbase(node) |
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def visit_ArgumentNode(self, node: mparser.ArgumentNode) -> None: |
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self._accept_list('positional', node.arguments) |
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kwargs_list: T.List[T.Dict[str, T.Dict[str, T.Any]]] = [] |
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for key, val in node.kwargs.items(): |
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key_res: T.Dict[str, T.Any] = {} |
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val_res: T.Dict[str, T.Any] = {} |
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self._raw_accept(key, key_res) |
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self._raw_accept(val, val_res) |
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kwargs_list += [{'key': key_res, 'val': val_res}] |
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self.current['kwargs'] = kwargs_list |
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self.setbase(node)
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