implement lambda calls in web components

packages/components/src/components/FunctionChart.tsx

@@ -1,5 +1,5 @@
 import * as React from "react";
-import { SqLambda, environment } from "@quri/squiggle-lang";
+import { SqLambda, environment, SqValueTag } from "@quri/squiggle-lang";
 import { FunctionChart1Dist } from "./FunctionChart1Dist";
 import { FunctionChart1Number } from "./FunctionChart1Number";
 import { DistributionPlottingSettings } from "./DistributionChart";
@@ -33,10 +33,8 @@ export const FunctionChart: React.FC<FunctionChartProps> = ({
       </MessageAlert>
     );
   }
-  return <div>NOT IMPLEMENTED IN 0.4 YET</div>;
+  const result1 = fn.call([chartSettings.start]);
-  /*
+  const result2 = fn.call([chartSettings.stop]);
-  const result1 = runForeign(fn, [chartSettings.start], environment);
-  const result2 = runForeign(fn, [chartSettings.stop], environment);
   const getValidResult = () => {
     if (result1.tag === "Ok") {
       return result1;
@@ -55,7 +53,7 @@ export const FunctionChart: React.FC<FunctionChartProps> = ({
   }
 
   switch (validResult.value.tag) {
-    case "distribution":
+    case SqValueTag.Distribution:
       return (
         <FunctionChart1Dist
           fn={fn}
@@ -65,7 +63,7 @@ export const FunctionChart: React.FC<FunctionChartProps> = ({
           distributionPlotSettings={distributionPlotSettings}
         />
       );
-    case "number":
+    case SqValueTag.Number:
       return (
         <FunctionChart1Number
           fn={fn}
@@ -82,5 +80,4 @@ export const FunctionChart: React.FC<FunctionChartProps> = ({
         </MessageAlert>
       );
   }
-  */
 };

packages/components/src/components/FunctionChart1Dist.tsx

@@ -6,6 +6,9 @@ import {
   result,
   SqLambda,
   environment,
+  SqError,
+  SqValue,
+  SqValueTag,
 } from "@quri/squiggle-lang";
 import { createClassFromSpec } from "react-vega";
 import * as percentilesSpec from "../vega-specs/spec-percentiles.json";
@@ -75,9 +78,15 @@ type errors = _.Dictionary<
 
 type point = { x: number; value: result<SqDistribution, string> };
 
-let getPercentiles = ({ chartSettings, fn, environment }) => {
+let getPercentiles = ({
-  throw new Error("NOT IMPLEMENTED IN 0.4 YET");
+  chartSettings,
-  /*
+  fn,
+  environment,
+}: {
+  chartSettings: FunctionChartSettings;
+  fn: SqLambda;
+  environment: environment;
+}) => {
   let chartPointsToRender = _rangeByCount(
     chartSettings.start,
     chartSettings.stop,
@@ -85,9 +94,9 @@ let getPercentiles = ({ chartSettings, fn, environment }) => {
   );
 
   let chartPointsData: point[] = chartPointsToRender.map((x) => {
-    let result = runForeign(fn, [x], environment);
+    let result = fn.call([x]);
     if (result.tag === "Ok") {
-      if (result.value.tag === "distribution") {
+      if (result.value.tag === SqValueTag.Distribution) {
         return { x, value: { tag: "Ok", value: result.value.value } };
       } else {
         return {
@@ -108,7 +117,7 @@ let getPercentiles = ({ chartSettings, fn, environment }) => {
   });
 
   let initialPartition: [
-    { x: number; value: Distribution }[],
+    { x: number; value: SqDistribution }[],
     { x: number; value: string }[]
   ] = [[], []];
 
@@ -127,27 +136,26 @@ let getPercentiles = ({ chartSettings, fn, environment }) => {
     // We convert it to to a pointSet distribution first, so that in case its a sample set
     // distribution, it doesn't internally convert it to a pointSet distribution for every
     // single inv() call.
-    let toPointSet: Distribution = unwrap(value.toPointSet());
+    let toPointSet = unwrap(value.pointSet(environment)).asDistribution();
     return {
       x: x,
-      p1: unwrap(toPointSet.inv(0.01)),
+      p1: unwrap(toPointSet.inv(environment, 0.01)),
-      p5: unwrap(toPointSet.inv(0.05)),
+      p5: unwrap(toPointSet.inv(environment, 0.05)),
-      p10: unwrap(toPointSet.inv(0.1)),
+      p10: unwrap(toPointSet.inv(environment, 0.1)),
-      p20: unwrap(toPointSet.inv(0.2)),
+      p20: unwrap(toPointSet.inv(environment, 0.2)),
-      p30: unwrap(toPointSet.inv(0.3)),
+      p30: unwrap(toPointSet.inv(environment, 0.3)),
-      p40: unwrap(toPointSet.inv(0.4)),
+      p40: unwrap(toPointSet.inv(environment, 0.4)),
-      p50: unwrap(toPointSet.inv(0.5)),
+      p50: unwrap(toPointSet.inv(environment, 0.5)),
-      p60: unwrap(toPointSet.inv(0.6)),
+      p60: unwrap(toPointSet.inv(environment, 0.6)),
-      p70: unwrap(toPointSet.inv(0.7)),
+      p70: unwrap(toPointSet.inv(environment, 0.7)),
-      p80: unwrap(toPointSet.inv(0.8)),
+      p80: unwrap(toPointSet.inv(environment, 0.8)),
-      p90: unwrap(toPointSet.inv(0.9)),
+      p90: unwrap(toPointSet.inv(environment, 0.9)),
-      p95: unwrap(toPointSet.inv(0.95)),
+      p95: unwrap(toPointSet.inv(environment, 0.95)),
-      p99: unwrap(toPointSet.inv(0.99)),
+      p99: unwrap(toPointSet.inv(environment, 0.99)),
     };
   });
 
   return { percentiles, errors: groupedErrors };
-  */
 };
 
 export const FunctionChart1Dist: React.FC<FunctionChart1DistProps> = ({
@@ -166,23 +174,21 @@ export const FunctionChart1Dist: React.FC<FunctionChart1DistProps> = ({
   }
   const signalListeners = { mousemove: handleHover, mouseout: handleOut };
 
-  return <div>NOT IMPLEMENTED IN 0.4 YET</div>;
-
-  /*
   //TODO: This custom error handling is a bit hacky and should be improved.
-  let mouseItem: result<squiggleExpression, errorValue> = !!mouseOverlay
+  let mouseItem: result<SqValue, SqError> = !!mouseOverlay
-    ? runForeign(fn, [mouseOverlay], environment)
+    ? fn.call([mouseOverlay])
     : {
         tag: "Error",
-        value: {
+        value: SqError.createOtherError(
-          tag: "RETodo",
+          "Hover x-coordinate returned NaN. Expected a number."
-          value: "Hover x-coordinate returned NaN. Expected a number.",
+        ),
-        },
       };
   let showChart =
-    mouseItem.tag === "Ok" && mouseItem.value.tag === "distribution" ? (
+    mouseItem.tag === "Ok" &&
+    mouseItem.value.tag === SqValueTag.Distribution ? (
       <DistributionChart
         plot={defaultPlot(mouseItem.value.value)}
+        environment={environment}
         width={400}
         height={50}
         {...distributionPlotSettings}
@@ -219,5 +225,4 @@ export const FunctionChart1Dist: React.FC<FunctionChart1DistProps> = ({
       )}
     </>
   );
-  */
 };

packages/components/src/components/FunctionChart1Number.tsx

@@ -1,10 +1,11 @@
 import * as React from "react";
 import _ from "lodash";
 import type { Spec } from "vega";
-import { result, SqLambda, environment } from "@quri/squiggle-lang";
+import { result, SqLambda, environment, SqValueTag } from "@quri/squiggle-lang";
 import { createClassFromSpec } from "react-vega";
 import * as lineChartSpec from "../vega-specs/spec-line-chart.json";
 import { ErrorAlert } from "./Alert";
+import { squiggleValueTag } from "@quri/squiggle-lang/src/rescript/ForTS/ForTS_SquiggleValue/ForTS_SquiggleValue_tag";
 
 let SquiggleLineChart = createClassFromSpec({
   spec: lineChartSpec as Spec,
@@ -32,9 +33,15 @@ interface FunctionChart1NumberProps {
 
 type point = { x: number; value: result<number, string> };
 
-let getFunctionImage = ({ chartSettings, fn, environment }) => {
+let getFunctionImage = ({
-  throw new Error("NOT IMPLEMENTED IN 0.4 YET");
+  chartSettings,
-  /*
+  fn,
+  environment,
+}: {
+  chartSettings: FunctionChartSettings;
+  fn: SqLambda;
+  environment: environment;
+}) => {
   let chartPointsToRender = _rangeByCount(
     chartSettings.start,
     chartSettings.stop,
@@ -42,9 +49,9 @@ let getFunctionImage = ({ chartSettings, fn, environment }) => {
   );
 
   let chartPointsData: point[] = chartPointsToRender.map((x) => {
-    let result = runForeign(fn, [x], environment);
+    let result = fn.call([x]);
     if (result.tag === "Ok") {
-      if (result.value.tag == "number") {
+      if (result.value.tag === SqValueTag.Number) {
         return { x, value: { tag: "Ok", value: result.value.value } };
       } else {
         return {
@@ -78,7 +85,6 @@ let getFunctionImage = ({ chartSettings, fn, environment }) => {
   }, initialPartition);
 
   return { errors, functionImage };
-  */
 };
 
 export const FunctionChart1Number: React.FC<FunctionChart1NumberProps> = ({
@@ -87,8 +93,6 @@ export const FunctionChart1Number: React.FC<FunctionChart1NumberProps> = ({
   environment,
   height,
 }: FunctionChart1NumberProps) => {
-  return <div>NOT IMPLEMENTED IN 0.4 YET</div>;
-  /*
   let getFunctionImageMemoized = React.useMemo(
     () => getFunctionImage({ chartSettings, fn, environment }),
     [environment, fn]
@@ -112,5 +116,4 @@ export const FunctionChart1Number: React.FC<FunctionChart1NumberProps> = ({
       ))}
     </>
   );
-  */
 };

packages/squiggle-lang/src/js/SqError.ts

@@ -6,4 +6,12 @@ export class SqError {
   toString() {
     return RSErrorValue.toString(this._value);
   }
+
+  static createTodoError(v: string) {
+    return new SqError(RSErrorValue.createTodoError(v));
+  }
+
+  static createOtherError(v: string) {
+    return new SqError(RSErrorValue.createOtherError(v));
+  }
 }

packages/squiggle-lang/src/js/SqLambda.ts

@@ -1,5 +1,8 @@
 import * as RSLambda from "../rescript/ForTS/ForTS_SquiggleValue/ForTS_SquiggleValue_Lambda.gen";
+import { SqError } from "./SqError";
+import { SqValue } from "./SqValue";
 import { SqValueLocation } from "./SqValueLocation";
+import { result } from "./types";
 
 type T = RSLambda.squiggleValue_Lambda;
 
@@ -9,4 +12,32 @@ export class SqLambda {
   parameters() {
     return RSLambda.parameters(this._value);
   }
+
+  call(args: (number | string)[]): result<SqValue, SqError> {
+    const { project, sourceId } = this.location;
+    // Might be good to use uuid instead, but there's no way to remove sources from projects.
+    // So this is not thread-safe.
+    const callId = "__lambda__";
+    if (this.location.path.root !== "bindings") {
+      return {
+        tag: "Error",
+        value: SqError.createTodoError("Only bindings lambdas can be rendered"),
+      };
+    }
+    const quote = (arg: string) =>
+      `"${arg.replace(new RegExp('"', "g"), '\\"')}"`;
+    const argsSource = args
+      .map((arg) => (typeof arg === "number" ? arg : quote(arg)))
+      .join(",");
+    const functionNameSource = this.location.path.items
+      .map((item, i) =>
+        typeof item === "string" ? (i ? "." + item : item) : `[${item}]`
+      )
+      .join("");
+    const source = `${functionNameSource}(${argsSource})`;
+    project.setSource(callId, source);
+    project.setContinues(callId, [sourceId]);
+    project.run(callId);
+    return project.getResult(callId);
+  }
 }

packages/squiggle-lang/src/js/SqPointSetDist.ts

@@ -1,4 +1,5 @@
 import * as _ from "lodash";
+import { wrapDistribution } from "./SqDistribution";
 import * as RSPointSetDist from "../rescript/ForTS/ForTS_Distribution/ForTS_Distribution_PointSetDistribution.gen";
 import { pointSetDistributionTag as Tag } from "../rescript/ForTS/ForTS_Distribution/ForTS_Distribution_PointSetDistribution_tag";
 
@@ -34,6 +35,10 @@ abstract class SqAbstractPointSetDist {
     if (!value) throw new Error("Internal casting error");
     return value;
   };
+
+  asDistribution() {
+    return wrapDistribution(RSPointSetDist.toDistribution(this._value));
+  }
 }
 
 export class SqMixedPointSetDist extends SqAbstractPointSetDist {

packages/squiggle-lang/src/rescript/ForTS/ForTS_Distribution/ForTS_Distribution_PointSetDistribution.res

@@ -45,3 +45,6 @@ let getContinues = (variant: pointSetDistribution): 'd =>
   | Continuous(continuous) => continuous->Some
   | _ => None
   }
+
+@genType
+let toDistribution = (v: pointSetDistribution): DistributionTypes.genericDist => PointSet(v)

packages/squiggle-lang/src/rescript/ForTS/ForTS_Reducer_ErrorValue.res

@@ -10,3 +10,9 @@ let getLocation = (e: reducerErrorValue): option<syntaxErrorLocation> =>
   | RESyntaxError(_, optionalLocation) => optionalLocation
   | _ => None
   }
+
+@genType
+let createTodoError = (v: string) => Reducer_ErrorValue.RETodo(v)
+
+@genType
+let createOtherError = (v: string) => Reducer_ErrorValue.REOther(v)

packages/squiggle-lang/src/rescript/Reducer/Reducer_ErrorValue.res

@@ -22,6 +22,7 @@ type errorValue =
   | RETodo(string) // To do
   | REUnitNotFound(string)
   | RENeedToRun
+  | REOther(string)
 
 type t = errorValue
 
@@ -59,4 +60,5 @@ let errorToString = err =>
   | REExpectedType(typeName, valueString) => `Expected type: ${typeName} but got: ${valueString}`
   | REUnitNotFound(unitName) => `Unit not found: ${unitName}`
   | RENeedToRun => "Need to run"
+  | REOther(msg) => `Error: ${msg}`
   }

packages/squiggle-lang/src/rescript/ReducerProject/ReducerProject_IncludeParser.js

@@ -5,9 +5,7 @@
 "use strict";
 
 function peg$subclass(child, parent) {
-  function C() {
+  function C() { this.constructor = child; }
-    this.constructor = child;
-  }
   C.prototype = parent.prototype;
   child.prototype = new C();
 }
@@ -29,15 +27,13 @@ peg$subclass(peg$SyntaxError, Error);
 
 function peg$padEnd(str, targetLength, padString) {
   padString = padString || " ";
-  if (str.length > targetLength) {
+  if (str.length > targetLength) { return str; }
-    return str;
-  }
   targetLength -= str.length;
   padString += padString.repeat(targetLength);
   return str + padString.slice(0, targetLength);
 }
 
-peg$SyntaxError.prototype.format = function (sources) {
+peg$SyntaxError.prototype.format = function(sources) {
   var str = "Error: " + this.message;
   if (this.location) {
     var src = null;
@@ -52,24 +48,15 @@ peg$SyntaxError.prototype.format = function (sources) {
     var loc = this.location.source + ":" + s.line + ":" + s.column;
     if (src) {
       var e = this.location.end;
-      var filler = peg$padEnd("", s.line.toString().length, " ");
+      var filler = peg$padEnd("", s.line.toString().length, ' ');
       var line = src[s.line - 1];
       var last = s.line === e.line ? e.column : line.length + 1;
-      var hatLen = last - s.column || 1;
+      var hatLen = (last - s.column) || 1;
-      str +=
+      str += "\n --> " + loc + "\n"
-        "\n --> " +
+          + filler + " |\n"
-        loc +
+          + s.line + " | " + line + "\n"
-        "\n" +
+          + filler + " | " + peg$padEnd("", s.column - 1, ' ')
-        filler +
+          + peg$padEnd("", hatLen, "^");
-        " |\n" +
-        s.line +
-        " | " +
-        line +
-        "\n" +
-        filler +
-        " | " +
-        peg$padEnd("", s.column - 1, " ") +
-        peg$padEnd("", hatLen, "^");
     } else {
       str += "\n at " + loc;
     }
@@ -77,35 +64,33 @@ peg$SyntaxError.prototype.format = function (sources) {
   return str;
 };
 
-peg$SyntaxError.buildMessage = function (expected, found) {
+peg$SyntaxError.buildMessage = function(expected, found) {
   var DESCRIBE_EXPECTATION_FNS = {
-    literal: function (expectation) {
+    literal: function(expectation) {
-      return '"' + literalEscape(expectation.text) + '"';
+      return "\"" + literalEscape(expectation.text) + "\"";
     },
 
-    class: function (expectation) {
+    class: function(expectation) {
-      var escapedParts = expectation.parts.map(function (part) {
+      var escapedParts = expectation.parts.map(function(part) {
         return Array.isArray(part)
           ? classEscape(part[0]) + "-" + classEscape(part[1])
           : classEscape(part);
       });
 
-      return (
+      return "[" + (expectation.inverted ? "^" : "") + escapedParts.join("") + "]";
-        "[" + (expectation.inverted ? "^" : "") + escapedParts.join("") + "]"
-      );
     },
 
-    any: function () {
+    any: function() {
       return "any character";
     },
 
-    end: function () {
+    end: function() {
       return "end of input";
     },
 
-    other: function (expectation) {
+    other: function(expectation) {
       return expectation.description;
-    },
+    }
   };
 
   function hex(ch) {
@@ -115,17 +100,13 @@ peg$SyntaxError.buildMessage = function (expected, found) {
   function literalEscape(s) {
     return s
       .replace(/\\/g, "\\\\")
-      .replace(/"/g, '\\"')
+      .replace(/"/g,  "\\\"")
       .replace(/\0/g, "\\0")
       .replace(/\t/g, "\\t")
       .replace(/\n/g, "\\n")
       .replace(/\r/g, "\\r")
-      .replace(/[\x00-\x0F]/g, function (ch) {
+      .replace(/[\x00-\x0F]/g,          function(ch) { return "\\x0" + hex(ch); })
-        return "\\x0" + hex(ch);
+      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return "\\x"  + hex(ch); });
-      })
-      .replace(/[\x10-\x1F\x7F-\x9F]/g, function (ch) {
-        return "\\x" + hex(ch);
-      });
   }
 
   function classEscape(s) {
@@ -133,17 +114,13 @@ peg$SyntaxError.buildMessage = function (expected, found) {
       .replace(/\\/g, "\\\\")
       .replace(/\]/g, "\\]")
       .replace(/\^/g, "\\^")
-      .replace(/-/g, "\\-")
+      .replace(/-/g,  "\\-")
       .replace(/\0/g, "\\0")
       .replace(/\t/g, "\\t")
       .replace(/\n/g, "\\n")
       .replace(/\r/g, "\\r")
-      .replace(/[\x00-\x0F]/g, function (ch) {
+      .replace(/[\x00-\x0F]/g,          function(ch) { return "\\x0" + hex(ch); })
-        return "\\x0" + hex(ch);
+      .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return "\\x"  + hex(ch); });
-      })
-      .replace(/[\x10-\x1F\x7F-\x9F]/g, function (ch) {
-        return "\\x" + hex(ch);
-      });
   }
 
   function describeExpectation(expectation) {
@@ -174,25 +151,17 @@ peg$SyntaxError.buildMessage = function (expected, found) {
         return descriptions[0] + " or " + descriptions[1];
 
       default:
-        return (
+        return descriptions.slice(0, -1).join(", ")
-          descriptions.slice(0, -1).join(", ") +
+          + ", or "
-          ", or " +
+          + descriptions[descriptions.length - 1];
-          descriptions[descriptions.length - 1]
-        );
     }
   }
 
   function describeFound(found) {
-    return found ? '"' + literalEscape(found) + '"' : "end of input";
+    return found ? "\"" + literalEscape(found) + "\"" : "end of input";
   }
 
-  return (
+  return "Expected " + describeExpected(expected) + " but " + describeFound(found) + " found.";
-    "Expected " +
-    describeExpected(expected) +
-    " but " +
-    describeFound(found) +
-    " found."
-  );
 };
 
 function peg$parse(input, options) {
@@ -206,7 +175,7 @@ function peg$parse(input, options) {
 
   var peg$c0 = "#include";
   var peg$c1 = "'";
-  var peg$c2 = '"';
+  var peg$c2 = "\"";
   var peg$c3 = "//";
   var peg$c4 = "/*";
   var peg$c5 = "*/";
@@ -222,8 +191,8 @@ function peg$parse(input, options) {
   var peg$e1 = peg$otherExpectation("string");
   var peg$e2 = peg$literalExpectation("'", false);
   var peg$e3 = peg$classExpectation(["'"], true, false);
-  var peg$e4 = peg$literalExpectation('"', false);
+  var peg$e4 = peg$literalExpectation("\"", false);
-  var peg$e5 = peg$classExpectation(['"'], true, false);
+  var peg$e5 = peg$classExpectation(["\""], true, false);
   var peg$e6 = peg$literalExpectation("//", false);
   var peg$e7 = peg$literalExpectation("/*", false);
   var peg$e8 = peg$classExpectation(["*"], true, false);
@@ -234,24 +203,12 @@ function peg$parse(input, options) {
   var peg$e13 = peg$classExpectation(["\n", "\r"], false, false);
   var peg$e14 = peg$classExpectation(["\r", "\n"], true, false);
 
-  var peg$f0 = function (head, tail) {
+  var peg$f0 = function(head, tail) {return [head, ...tail].filter( e => e != '');};
-    return [head, ...tail].filter((e) => e != "");
+  var peg$f1 = function() {return [];};
-  };
+  var peg$f2 = function(characters) {return characters.join('');};
-  var peg$f1 = function () {
+  var peg$f3 = function(characters) {return characters.join('');};
-    return [];
+  var peg$f4 = function() { return '';};
-  };
+  var peg$f5 = function() { return '';};
-  var peg$f2 = function (characters) {
-    return characters.join("");
-  };
-  var peg$f3 = function (characters) {
-    return characters.join("");
-  };
-  var peg$f4 = function () {
-    return "";
-  };
-  var peg$f5 = function () {
-    return "";
-  };
   var peg$currPos = 0;
   var peg$savedPos = 0;
   var peg$posDetailsCache = [{ line: 1, column: 1 }];
@@ -265,9 +222,7 @@ function peg$parse(input, options) {
 
   if ("startRule" in options) {
     if (!(options.startRule in peg$startRuleFunctions)) {
-      throw new Error(
+      throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
-        "Can't start parsing from rule \"" + options.startRule + '".'
-      );
     }
 
     peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
@@ -285,7 +240,7 @@ function peg$parse(input, options) {
     return {
       source: peg$source,
       start: peg$savedPos,
-      end: peg$currPos,
+      end: peg$currPos
     };
   }
 
@@ -294,10 +249,9 @@ function peg$parse(input, options) {
   }
 
   function expected(description, location) {
-    location =
+    location = location !== undefined
-      location !== undefined
+      ? location
-        ? location
+      : peg$computeLocation(peg$savedPos, peg$currPos);
-        : peg$computeLocation(peg$savedPos, peg$currPos);
 
     throw peg$buildStructuredError(
       [peg$otherExpectation(description)],
@@ -307,10 +261,9 @@ function peg$parse(input, options) {
   }
 
   function error(message, location) {
-    location =
+    location = location !== undefined
-      location !== undefined
+      ? location
-        ? location
+      : peg$computeLocation(peg$savedPos, peg$currPos);
-        : peg$computeLocation(peg$savedPos, peg$currPos);
 
     throw peg$buildSimpleError(message, location);
   }
@@ -320,12 +273,7 @@ function peg$parse(input, options) {
   }
 
   function peg$classExpectation(parts, inverted, ignoreCase) {
-    return {
+    return { type: "class", parts: parts, inverted: inverted, ignoreCase: ignoreCase };
-      type: "class",
-      parts: parts,
-      inverted: inverted,
-      ignoreCase: ignoreCase,
-    };
   }
 
   function peg$anyExpectation() {
@@ -355,7 +303,7 @@ function peg$parse(input, options) {
       details = peg$posDetailsCache[p];
       details = {
         line: details.line,
-        column: details.column,
+        column: details.column
       };
 
       while (p < pos) {
@@ -384,20 +332,18 @@ function peg$parse(input, options) {
       start: {
         offset: startPos,
         line: startPosDetails.line,
-        column: startPosDetails.column,
+        column: startPosDetails.column
       },
       end: {
         offset: endPos,
         line: endPosDetails.line,
-        column: endPosDetails.column,
+        column: endPosDetails.column
-      },
+      }
     };
   }
 
   function peg$fail(expected) {
-    if (peg$currPos < peg$maxFailPos) {
+    if (peg$currPos < peg$maxFailPos) { return; }
-      return;
-    }
 
     if (peg$currPos > peg$maxFailPos) {
       peg$maxFailPos = peg$currPos;
@@ -585,9 +531,7 @@ function peg$parse(input, options) {
       peg$currPos += 8;
     } else {
       s2 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e0); }
-        peg$fail(peg$e0);
-      }
     }
     if (s2 !== peg$FAILED) {
       s3 = [];
@@ -645,9 +589,7 @@ function peg$parse(input, options) {
       peg$currPos++;
     } else {
       s2 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e2); }
-        peg$fail(peg$e2);
-      }
     }
     if (s2 !== peg$FAILED) {
       s3 = [];
@@ -656,9 +598,7 @@ function peg$parse(input, options) {
         peg$currPos++;
       } else {
         s4 = peg$FAILED;
-        if (peg$silentFails === 0) {
+        if (peg$silentFails === 0) { peg$fail(peg$e3); }
-          peg$fail(peg$e3);
-        }
       }
       while (s4 !== peg$FAILED) {
         s3.push(s4);
@@ -667,9 +607,7 @@ function peg$parse(input, options) {
           peg$currPos++;
         } else {
           s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
+          if (peg$silentFails === 0) { peg$fail(peg$e3); }
-            peg$fail(peg$e3);
-          }
         }
       }
       if (input.charCodeAt(peg$currPos) === 39) {
@@ -677,9 +615,7 @@ function peg$parse(input, options) {
         peg$currPos++;
       } else {
         s4 = peg$FAILED;
-        if (peg$silentFails === 0) {
+        if (peg$silentFails === 0) { peg$fail(peg$e2); }
-          peg$fail(peg$e2);
-        }
       }
       if (s4 !== peg$FAILED) {
         s1 = s3;
@@ -704,9 +640,7 @@ function peg$parse(input, options) {
         peg$currPos++;
       } else {
         s2 = peg$FAILED;
-        if (peg$silentFails === 0) {
+        if (peg$silentFails === 0) { peg$fail(peg$e4); }
-          peg$fail(peg$e4);
-        }
       }
       if (s2 !== peg$FAILED) {
         s3 = [];
@@ -715,9 +649,7 @@ function peg$parse(input, options) {
           peg$currPos++;
         } else {
           s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
+          if (peg$silentFails === 0) { peg$fail(peg$e5); }
-            peg$fail(peg$e5);
-          }
         }
         while (s4 !== peg$FAILED) {
           s3.push(s4);
@@ -726,9 +658,7 @@ function peg$parse(input, options) {
             peg$currPos++;
           } else {
             s4 = peg$FAILED;
-            if (peg$silentFails === 0) {
+            if (peg$silentFails === 0) { peg$fail(peg$e5); }
-              peg$fail(peg$e5);
-            }
           }
         }
         if (input.charCodeAt(peg$currPos) === 34) {
@@ -736,9 +666,7 @@ function peg$parse(input, options) {
           peg$currPos++;
         } else {
           s4 = peg$FAILED;
-          if (peg$silentFails === 0) {
+          if (peg$silentFails === 0) { peg$fail(peg$e4); }
-            peg$fail(peg$e4);
-          }
         }
         if (s4 !== peg$FAILED) {
           s1 = s3;
@@ -759,9 +687,7 @@ function peg$parse(input, options) {
     peg$silentFails--;
     if (s0 === peg$FAILED) {
       s1 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e1); }
-        peg$fail(peg$e1);
-      }
     }
 
     peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };
@@ -823,9 +749,7 @@ function peg$parse(input, options) {
       peg$currPos += 2;
     } else {
       s1 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e6); }
-        peg$fail(peg$e6);
-      }
     }
     if (s1 !== peg$FAILED) {
       s2 = [];
@@ -864,9 +788,7 @@ function peg$parse(input, options) {
       peg$currPos += 2;
     } else {
       s1 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e7); }
-        peg$fail(peg$e7);
-      }
     }
     if (s1 !== peg$FAILED) {
       s2 = [];
@@ -875,9 +797,7 @@ function peg$parse(input, options) {
         peg$currPos++;
       } else {
         s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
+        if (peg$silentFails === 0) { peg$fail(peg$e8); }
-          peg$fail(peg$e8);
-        }
       }
       while (s3 !== peg$FAILED) {
         s2.push(s3);
@@ -886,9 +806,7 @@ function peg$parse(input, options) {
           peg$currPos++;
         } else {
           s3 = peg$FAILED;
-          if (peg$silentFails === 0) {
+          if (peg$silentFails === 0) { peg$fail(peg$e8); }
-            peg$fail(peg$e8);
-          }
         }
       }
       if (input.substr(peg$currPos, 2) === peg$c5) {
@@ -896,9 +814,7 @@ function peg$parse(input, options) {
         peg$currPos += 2;
       } else {
         s3 = peg$FAILED;
-        if (peg$silentFails === 0) {
+        if (peg$silentFails === 0) { peg$fail(peg$e9); }
-          peg$fail(peg$e9);
-        }
       }
       if (s3 !== peg$FAILED) {
         peg$savedPos = s0;
@@ -935,16 +851,12 @@ function peg$parse(input, options) {
       peg$currPos++;
     } else {
       s0 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e11); }
-        peg$fail(peg$e11);
-      }
     }
     peg$silentFails--;
     if (s0 === peg$FAILED) {
       s1 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e10); }
-        peg$fail(peg$e10);
-      }
     }
 
     peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };
@@ -970,16 +882,12 @@ function peg$parse(input, options) {
       peg$currPos++;
     } else {
       s0 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e13); }
-        peg$fail(peg$e13);
-      }
     }
     peg$silentFails--;
     if (s0 === peg$FAILED) {
       s1 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e12); }
-        peg$fail(peg$e12);
-      }
     }
 
     peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };
@@ -1004,9 +912,7 @@ function peg$parse(input, options) {
       peg$currPos++;
     } else {
       s0 = peg$FAILED;
-      if (peg$silentFails === 0) {
+      if (peg$silentFails === 0) { peg$fail(peg$e14); }
-        peg$fail(peg$e14);
-      }
     }
 
     peg$resultsCache[key] = { nextPos: peg$currPos, result: s0 };
@@ -1035,5 +941,5 @@ function peg$parse(input, options) {
 
 module.exports = {
   SyntaxError: peg$SyntaxError,
-  parse: peg$parse,
+  parse: peg$parse
 };