GraphBuilder

GraphBuilder is a class within the automata.symbol.graph module that constructs a directed multi-graph, called a SymbolGraph, from a corresponding Index. The SymbolGraph incorporates and represents the relationship between symbols in a python codebase.

Overview

Upon instantiation, the GraphBuilder takes in an Index and a boolean flag indicating whether to build caller relationships or not. This class has one public method, build_graph, which loops over all the Documents in the index of the graph initiating the construction of the graph by adding corresponding Symbol nodes to the graph. It also adds edges representing relationships, references, and calls between Symbol nodes.

Example

While no direct foundational example of GraphBuilder is available from the context, here is a conceptual example:

from automata.symbol.graph import GraphBuilder
from automata.symbol.scip_pb2 import Index  # Some test index

index = Index()  # Object of type Index
builder = GraphBuilder(index, build_caller_relationships=True)
graph = builder.build_graph()  # build the graph

The above example is a simplification, as in practice, you would populate the Index instance with the actual index data.

Limitations

While GraphBuilder helps in extracting desired relationships and references between Symbol nodes, its performance can be a hit for very large Indices, resulting in slow graph construction times. Another limitation is that it only supports the construction of directed multigraphs.

Follow-up Questions:

  • What is the specific role of the boolean flag build_caller_relationships in the construction of the graph?

  • Are there any special type requirements for Document in the Index?

  • How does the construction of the SymbolGraph differ when build_caller_relationships is set to True vs False?

  • Is there an optimal way to construct the graph in terms of the density or sparsity of the Index document relationships?

  • Could you provide example index data to use for a more concrete usage example of GraphBuilder?