Simple function with no params

src/distPlus/expressionTree/ExpressionTreeEvaluator.re

@@ -268,7 +268,7 @@ let callableFunction = (evaluationParams, name, args) => {
          |> E.R.bind(_, Render.toFloat)
        )
     |> E.A.R.firstErrorOrOpen;
-  b |> E.R.bind(_, Functions.fnn(name));
+  b |> E.R.bind(_, Functions.fnn(evaluationParams, name));
 };
 
 module Render = {

src/distPlus/expressionTree/Functions.re

@@ -49,15 +49,16 @@ let to_: array(node) => result(node, string) =
     Error("Low value must be less than high value.")
   | _ => Error("Requires 2 variables");
 
-let fnn = (name, args: array(node)) => {
-  switch (name) {
-  | "normal" => apply2(twoFloatsToOkSym(SymbolicDist.Normal.make), args)
-  | "uniform" => apply2(twoFloatsToOkSym(SymbolicDist.Uniform.make), args)
-  | "beta" => apply2(twoFloatsToOkSym(SymbolicDist.Beta.make), args)
-  | "cauchy" => apply2(twoFloatsToOkSym(SymbolicDist.Cauchy.make), args)
-  | "lognormal" => apply2(twoFloatsToOkSym(SymbolicDist.Lognormal.make), args)
-  | "lognormalFromMeanAndStdDev" => apply2(twoFloatsToOkSym(SymbolicDist.Lognormal.fromMeanAndStdev), args)
-  | "exponential" => 
+let fnn = (evaluationParams:ExpressionTypes.ExpressionTree.evaluationParams, name, args: array(node)) => {
+  switch (name, ExpressionTypes.ExpressionTree.Environment.get(evaluationParams.environment, name)) {
+  | (_, Some(`Function(t))) => t(`Function(t));
+  | ("normal", _) => apply2(twoFloatsToOkSym(SymbolicDist.Normal.make), args)
+  | ("uniform", _) => apply2(twoFloatsToOkSym(SymbolicDist.Uniform.make), args)
+  | ("beta", _) => apply2(twoFloatsToOkSym(SymbolicDist.Beta.make), args)
+  | ("cauchy", _) => apply2(twoFloatsToOkSym(SymbolicDist.Cauchy.make), args)
+  | ("lognormal", _) => apply2(twoFloatsToOkSym(SymbolicDist.Lognormal.make), args)
+  | ("lognormalFromMeanAndStdDev", _) => apply2(twoFloatsToOkSym(SymbolicDist.Lognormal.fromMeanAndStdev), args)
+  | ("exponential", _) => 
     switch (args) {
     | [|
         `SymbolicDist(`Float(a)),
@@ -65,7 +66,7 @@ let fnn = (name, args: array(node)) => {
       Ok(`SymbolicDist(SymbolicDist.Exponential.make(a)));
     | _ => Error("Needs 3 valid arguments")
     }
-  | "triangular" =>
+  | ("triangular", _) =>
     switch (args) {
     | [|
         `SymbolicDist(`Float(a)),
@@ -76,7 +77,7 @@ let fnn = (name, args: array(node)) => {
       |> E.R.fmap(r => `SymbolicDist(r))
     | _ => Error("Needs 3 valid arguments")
     }
-  | "to" => to_(args)
+  | ("to", _) => to_(args)
   | _ => Error("Function not found")
   };
 };

src/distPlus/expressionTree/MathJsParser.re

@@ -9,9 +9,15 @@ module MathJsonToMathJsAdt = {
     | Blocks(array(arg))
     | Object(Js.Dict.t(arg))
     | Assignment(arg, arg)
+    | FunctionAssignment(fnAssignment)
   and fn = {
     name: string,
     args: array(arg),
+  }
+  and fnAssignment = {
+    name: string,
+    args: array(string),
+    expression: arg,
   };
 
   let rec run = (j: Js.Json.t) =>
@@ -55,6 +61,14 @@ module MathJsonToMathJsAdt = {
         let block = r => r |> field("node", run);
         let args = j |> field("blocks", array(block)) |> E.A.O.concatSomes;
         Some(Blocks(args));
+      | "FunctionAssignmentNode" =>
+        let name = j |> field("name", string);
+        let args = j |> field("params", array(field("name", string)));
+        let expression = j |> field("expr", run);
+        expression
+        |> E.O.fmap(expression =>
+             FunctionAssignment({name, args, expression})
+           );
       | n =>
         Js.log3("Couldn't parse mathjs node", j, n);
         None;
@@ -66,7 +80,7 @@ module MathAdtToDistDst = {
   open MathJsonToMathJsAdt;
 
   let handleSymbol = (inputVars: inputVars, sym) => {
-    Ok(`Symbol(sym))
+    Ok(`Symbol(sym));
   };
 
   module MathAdtCleaner = {
@@ -82,7 +96,6 @@ module MathAdtToDistDst = {
       | "t" => Some(f *. 1000000000000.)
       | _ => None
       };
-
     let rec run =
       fun
       | Fn({name: "multiply", args: [|Value(f), Symbol(s)|]}) as doNothing =>
@@ -96,6 +109,7 @@ module MathAdtToDistDst = {
       | Value(v) => Value(v)
       | Blocks(args) => Blocks(args |> E.A.fmap(run))
       | Assignment(a, b) => Assignment(a, run(b))
+      | FunctionAssignment(a) => FunctionAssignment(a)
       | Object(v) =>
         Object(
           v
@@ -281,7 +295,11 @@ module MathAdtToDistDst = {
     | "sample"
     | "cdf"
     | "pdf" => operationParser(name, parseArgs())
-    | n => Error(n ++ "(...) is not currently supported")
+    | name =>
+      parseArgs()
+      |> E.R.fmap((args: array(ExpressionTypes.ExpressionTree.node)) =>
+           `CallableFunction((name, args))
+         )
     };
   };
 
@@ -298,10 +316,19 @@ module MathAdtToDistDst = {
           Error("This type not currently supported");
         };
 
+  // | FunctionAssignment({name, args, expression}) => {
+  //   let evaluatedExpression = run(expression);
+  //   `Function(_ => Ok(evaluatedExpression));
+  // }
   let rec topLevel =
           (inputVars: inputVars, r)
           : result(ExpressionTypes.Program.program, string) =>
     switch (r) {
+    | FunctionAssignment({name, args, expression}) =>
+      switch (nodeParser(inputVars, expression)) {
+      | Ok(r) => Ok([|`Assignment((name, `Function(_ => Ok(r))))|])
+      | _ => Error("")
+      }
     | Value(_) as r =>
       nodeParser(inputVars, r) |> E.R.fmap(r => [|`Expression(r)|])
     | Fn(_) as r =>

src/distPlus/expressionTree/Program.re

@@ -1,4 +1,5 @@
 type t = ExpressionTypes.Program.program;
 
+let last = (r:t) => E.A.last(r) |> E.O.toResult("No rendered lines");
 // let run = (p:program) => p |> E.A.last |> E.O.fmap(r => 
 // )

src/distPlus/renderers/DistPlusRenderer.re

@@ -115,7 +115,6 @@ module Internals = {
          switch (statement) {
          | `Assignment(name, node) =>
            ins := addVariable(ins^, name, node);
-           Js.log4("HIHI", ins, name, node);
            None;
          | `Expression(node) => Some(runNode(ins^, node))
          }