Feature Request: A way to visualize the Parse Graph of a grammar by the sequence of Tokens consumed by the rules.
The Parse Graph should be generated by selecting a rule or rule decision and using the contextual menu or the Grammar menu. The root of the Parse Graph should be the start of the selected rule or decision. The Parse Graph should visually represent the flow of control in the parser generated by a grammar starting from the selected rule or decision. The Parse Graph should show the rules, rule decisions and the Tokens or user provided Predicates that determine which path is followed. A decision invoking a Sub-rule should be inlined until a leading Token or predicate is found. Antlr generated predicates should list the Tokens in the follow set that trigger that predicate. If the set is more than 2-3 Tokens then do not list the tokens in the graph node but instead have a label that refers to a named list of tokens added to the bottom of the Parse Graph diagram. User provided predicates should be shown as a node named by the predicate function with a label indicating the line number of the predicate in the grammar. Predicate Nodes should distinguish between Syntactic, Semantic and Gated Predicates The graph generation should have an option to limit the depth of analysis so the generated graph will be small enough for a person to read. If analysis is terminated by the depth limit, then that should be visually indicated by adding an Ellipsis node as a terminal leaf node. The graph generation should also honor the current printer page setup and margins. If a diagram would be wider than the current page margins it should be wrapped to another line. The output should be a PS, PDF or Dot file with display and save options like the existing Rule Dependency and Syntax Diagram graphs. The graph should be formatted like a Pascal Railroad Diagram similar to the existing Syntax Diagrams instead of free-form like the Rule-Dependency-Graph. The resulting graph should be suitable for use as formal language documentation for the language parsed by the grammar. i.e. If the grammar was for the Pascal language, selecting the Program rule would generate a railroad diagram for the Pascal Language that would look like a more detailed version of the diagrams found in every elementary Pascal textbook. List: http://www.antlr.org/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to il-antlr-inter...@googlegroups.com. To unsubscribe from this group, send email to il-antlr-interest+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.