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<h1>Rationale</h1><p>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).</p><h1>Steps</h1><ul style="list-style-type: square;"><li>build an interface to the current Compiler<ul style="list-style-type: square;"><li>takes Form, results in Map</li></ul></li><li>test the things we can do with this information, is it useful?</li><li>request to add some information to the compiler to provide missing information</li><li>iterate until useful</li></ul><h1>Progress</h1><p>Building interface: <a href="https://github.com/frenchy64/analyze/blob/master/src/analyze/core.clj">https://github.com/frenchy64/analyze/blob/master/src/analyze/core.clj</a></p><h1>Issues</h1><h2>Redefinition of Classes at Compile time</h2><p>Running `clojure.core` through the analyzer attempts to redefine functions at (what seems to be) macroexpand time.</p><table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>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)

</pre></td></tr></table><p>Offending line in `clojure.core`:</p><table class="wysiwyg-macro" data-macro-name="code" style="background-image: url(/plugins/servlet/confluence/placeholder/macro-heading?definition=e2NvZGV9&amp;locale=en_GB&amp;version=2); background-repeat: no-repeat;" data-macro-body-type="PLAIN_TEXT"><tr><td class="wysiwyg-macro-body"><pre>(definline booleans
  "Casts to boolean[]"
  {:added "1.1"}
  [xs] `(. clojure.lang.Numbers booleans ~xs))</pre></td></tr></table><p>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?</p>