Rationale

Much useful information is contained in Clojure's analysis compilation phase. There should be an interface to collect this information a la carte, in a nice form (ie. a map).

Steps

build an interface to the current Compiler
- takes Form, results in Map
test the things we can do with this information, is it useful?
request to add some information to the compiler to provide missing information
iterate until useful

Progress

Building interface: https://github.com/frenchy64/analyze/blob/master/src/analyze/core.clj

Issues

Redefinition of Classes at Compile time

Running `clojure.core` through the analyzer attempts to redefine functions at (what seems to be) macroexpand time.

CompilerException java.lang.LinkageError: loader (instance of clojure/lang/DynamicClassLoader): attempted duplicate class definition for name: "clojure/core$booleans", compiling:(REPL:4)
 clojure.lang.Compiler.analyzeSeq (Compiler.java:6416)
 clojure.lang.Compiler.analyze (Compiler.java:6216)
 clojure.lang.Compiler.analyzeSeq (Compiler.java:6397)
 clojure.lang.Compiler.analyze (Compiler.java:6216)
 clojure.lang.Compiler.analyze (Compiler.java:6177)
 clojure.lang.Compiler$InvokeExpr.parse (Compiler.java:3503)
 clojure.lang.Compiler.analyzeSeq (Compiler.java:6411)
 clojure.lang.Compiler.analyze (Compiler.java:6216)
 clojure.lang.Compiler.analyze (Compiler.java:6177)
 clojure.lang.Compiler$BodyExpr$Parser.parse (Compiler.java:5572)
 clojure.lang.Compiler.analyzeSeq (Compiler.java:6409)
 clojure.lang.Compiler.analyze (Compiler.java:6216)
Caused by:
LinkageError loader (instance of clojure/lang/DynamicClassLoader): attempted duplicate class definition for name: "clojure/core$booleans"
 java.lang.ClassLoader.defineClass1 (ClassLoader.java:-2)
 java.lang.ClassLoader.defineClassCond (ClassLoader.java:631)
 java.lang.ClassLoader.defineClass (ClassLoader.java:615)
 java.lang.ClassLoader.defineClass (ClassLoader.java:465)
 clojure.lang.DynamicClassLoader.defineClass (DynamicClassLoader.java:46)
 clojure.lang.Compiler$ObjExpr.getCompiledClass (Compiler.java:4533)
 clojure.lang.Compiler$FnExpr.parse (Compiler.java:3697)
 clojure.lang.Compiler.analyzeSeq (Compiler.java:6407)
 clojure.lang.Compiler.analyze (Compiler.java:6216)

Offending line in `clojure.core`:

(definline booleans
  "Casts to boolean[]"
  {:added "1.1"}
  [xs] `(. clojure.lang.Numbers booleans ~xs))

I don't have a good idea how to fix this. Maybe a flag that indicates to catch a redefinition error, and then lookup the class in the cache?