Gist 782256

Gist 772135

This visualization shows a Ruby error trace from the ANTLR3 parser library, captured as a gist. It displays the sequence of stack frames leading to a `NameError` about an uninitialized constant `Socket::SOL_TCP`, starting from the command-line invocation of `LPCParser.rb`. The rendering relies on the Ruby backtrace formatting and the `antlr3` gem’s debug socket communication, with the output shown as plain text lines. The data source is the literal terminal output from the failed parser run, presented without additional styling or interaction.

68% match

Gist 772368

A Ruby script attempts to visualize an ANTLR3 parse tree by generating Graphviz DOT output. The code parses the search expression "a and b or c and not d" using a custom `SearchExpression` parser, then calls `ANTLR3::DOT::TreeGenerator.generate(tree)` to render the tree. The example shows a runtime error: the generator raises a `NoMethodError` for `node_number`, indicating a version mismatch or API break in the ANTLR3 library. The visible output is the terminal stack trace, not a rendered graph.

65% match

Gist 202667

This example shows a Ruby error trace from a failed RSpec test run, specifically a `TypeError` about dumping an anonymous class while using YAML serialization with single-table inheritance subclasses in a `before(:all)` hook. The visualization presents the full stack trace, highlighting the chain of method calls from the test assertion through DataMapper’s YAML adapter, Extlib hooks, and RSpec’s example runner. The code uses standard Ruby libraries (`yaml`, `pathname`) and frameworks like DataMapper, Extlib, and RSpec, revealing how the error propagates across the gem’s internal APIs.

56% match

Gist 203736

This gist contains a raw Ruby backtrace from libruby18.so, showing 72 stack frames of a crashing Ruby 1.8 process. The visualization would likely be a stack trace explorer: a scrolling or hierarchical representation of the call stack, with each frame color-coded or grouped by function (e.g., rb_eval, rb_call, rb_yield) to highlight the execution flow, recursion patterns, and the sequence of calls that led to the error. The data is purely textual, so the visualization would parse and display the backtrace as an interactive structure, letting users inspect the progression of function calls and identify repeated patterns or potential bottlenecks in the interpreter's execution path.

54% match

Gist 410566

This gist contains a log of a Ruby on Rails application crash, showing a glibc-detected double free or corruption error with a full backtrace and memory map. The backtrace reveals repeated calls into libruby18.so.1.8 functions, indicating memory allocation issues during garbage collection or object creation. The memory map displays the address ranges, permissions, and mappings for the ruby18 binary, libraries, and heap, illustrating the process's memory layout at the time of the crash. The visualization would depict the stack frames and memory regions to help diagnose the corruption.

OP file, compilable by jison-gho. SO: https://stackoverflow.com/posts/58902159

This example demonstrates a Jison-gho lexer and parser grammar for a custom GIF-like code language, converting token sequences into an abstract syntax tree. The lexer uses state management (`begin`, `popState`, `delimit` and `string_literal` states) to enforce semicolon delimiters between tokens and handle quoted strings. The parser defines operator precedence with `%left` declarations and builds AST nodes via `new yy.Stmt` and `new yy.Expr` constructors, processing number literals, identifiers, and control flow keywords. The grammar handles numeric formats and string concatenation rules visible in rules like `UFloat` and `AlfanumAtom`.

GGerHobbelt

Gist 357899

This example shows a server error trace from a Ruby Unicorn web server, rendered as a plain-text visualization of the crash stack. The display lists the failed file `gistfile1.txt` with its read error, followed by the sequential Ruby method calls leading to the failure, from `process_client` down through `worker_loop` and `spawn_missing_workers`. The code relies on the Unicorn HTTP server gem’s internal call stack, using Ruby’s default exception reporting to expose the call chain. No external visualization library is used; the output is simply the raw error text formatted as a list of stack frames.

Gist 207932

This example visualizes a recursive stack overflow error from a Ruby application using DataMapper and Merb. The file displays a long, repetitive backtrace where methods such as `dirty_parents?`, `save_parents`, and `any?` endlessly call each other, causing the system to fail. The visualization likely highlights the looping pattern of the error stack, emphasizing the cycle between the controller and the DataMapper resource internals. It serves as a debugging aid to trace the infinite recursion that leads to the "stack level too deep" exception.