Module PrintAst

Provides queries to pretty-print a Python AST as a graph.

By default, this will print the AST for all elements in the database. To change this behavior, extend PrintAstConfiguration and override shouldPrint to hold for only the elements you wish to view the AST for.

Import path

import semmle.python.PrintAst

Imports

RegexTreeView	Provides a class hierarchy corresponding to a parse tree of regular expressions.
Yaml	Provides classes for working with YAML data.
python

Predicates

edges	Holds if `target` is a child of `source` in the AST, and property `key` of the edge has the given `value`.
graphProperties	Holds if property `key` of the graph has the given `value`.
nodes	Holds if `node` belongs to the output tree, and its property `key` has the given `value`.

Classes

AstElementNode	An `AstNode` printed in the print-viewer.
CallArgumentsNode	A synthetic print node for the arguments to `call`.
CallPrintNode	A print node for a `Call`.
ClassNode	A print node for classes.
ExceptNode	A print node for `ExceptStmt`.
ForPrintNode	A print node for `For` statements.
FunctionDefNode	A print node for a `FunctionDef`.
FunctionNode	A print node for a `Function`.
FunctionParamsNode	A print node for the parameters in `func`.
IfNode	A print node for `If` statements.
ParameterNode	A print node for a `Parameter`.
PrintAstConfiguration	The query can extend this class to control which elements are printed.
PrintAstNode	A node in the output tree.
StmtListNode	A print node for `StmtList`. A `StmtListNode` is always a child of an `AstElementNode`, and the child-parent relation is defined by the `getStmtList` predicate in `AstElementNode`.
StringLiteralNode	A print node for a `StringLiteral`.
TopLevelPrintAstNode	A top-level AST node.
TryNode	A print node for `Try` statements.
WhilePrintNode	A print node for `While` statements.
WithNode	A print node for `With` statements.

Modules

PrintYaml

Classes for printing YAML AST.