From f14aedc2200c5daad2cc46c1631692e3f339394c Mon Sep 17 00:00:00 2001
From: Craig Gidney <craig.gidney@gmail.com>
Date: Sun, 16 Oct 2016 13:24:34 -0400
Subject: [PATCH] Optimizing hotspots - Turned on slow webgl checks in tests

---
 src/base/Seq.js                  |  8 ++++++-
 src/circuit/CircuitDefinition.js | 39 +++++++++++++++++++++++---------
 src/circuit/GateColumn.js        |  3 +--
 src/draw/Painter.js              |  6 ++---
 test/TestUtil.js                 |  2 ++
 5 files changed, 41 insertions(+), 17 deletions(-)

diff --git a/src/base/Seq.js b/src/base/Seq.js
index 683bddf2..85b6bf4c 100644
--- a/src/base/Seq.js
+++ b/src/base/Seq.js
@@ -510,7 +510,13 @@ class Seq {
      * @template T
      */
     sum() {
-        return this.fold((a, e) => a + e, 0);
+        let total = 0;
+        let first = true;
+        for (let e of this._iterable) {
+            total = first ? e : total + e;
+            first = false;
+        }
+        return total;
     }
 
     /**
diff --git a/src/circuit/CircuitDefinition.js b/src/circuit/CircuitDefinition.js
index 2cb07b0a..f9f7b019 100644
--- a/src/circuit/CircuitDefinition.js
+++ b/src/circuit/CircuitDefinition.js
@@ -658,10 +658,19 @@ class CircuitDefinition {
      * @returns {boolean}
      */
     colHasEnabledSwapGate(col) {
-        let pts = Seq.range(this.numWires).
-            map(row => new Point(col, row)).
-            filter(pt => this.gateInSlot(pt.x, pt.y) === Gates.Special.SwapHalf);
-        return !pts.any(pt => this.gateAtLocIsDisabledReason(pt.x, pt.y) !== undefined) && pts.count() === 2;
+        if (col < 0 || col >= this.columns.length) {
+            return false;
+        }
+        let count = 0;
+        for (let row = 0; row < this.numWires; row++) {
+            if (this.gateInSlot(col, row) === Gates.Special.SwapHalf) {
+                if (this.gateAtLocIsDisabledReason(col, row) !== undefined) {
+                    return false;
+                }
+                count++;
+            }
+        }
+        return count === 2;
     }
 
     /**
@@ -672,7 +681,12 @@ class CircuitDefinition {
         if (col < 0 || col >= this.columns.length) {
             return false;
         }
-        return seq(this.columns[col].gates).any(e => e !== undefined && e.affectsOtherWires());
+        for (let gate of this.columns[col].gates) {
+            if (gate !== undefined && gate.affectsOtherWires()) {
+                return true;
+            }
+        }
+        return false;
     }
 
     /**
@@ -835,12 +849,15 @@ class CircuitDefinition {
         }
 
         let col = this.columns[colIndex];
-        return Seq.range(col.gates.length).
-            filter(row =>
-                col.gates[row] !== undefined &&
-                col.gates[row].customStatPostProcesser !== undefined &&
-                this.gateAtLocIsDisabledReason(colIndex, row) === undefined).
-            toArray();
+        let result = [];
+        for (let row = 0; row < col.gates.length; row++) {
+            if (col.gates[row] !== undefined &&
+                    col.gates[row].customStatPostProcesser !== undefined &&
+                    this.gateAtLocIsDisabledReason(colIndex, row) === undefined) {
+                result.push(row);
+            }
+        }
+        return result;
     }
 
     /**
diff --git a/src/circuit/GateColumn.js b/src/circuit/GateColumn.js
index f32b550e..818ccc3c 100644
--- a/src/circuit/GateColumn.js
+++ b/src/circuit/GateColumn.js
@@ -196,8 +196,7 @@ class GateColumn {
 
         let row = args.outerRow;
         let rangeVals = seq(args.gate.getUnmetContextKeys()).
-            filter(key => key.startsWith("Input Range ")).
-            filter(key => args.context.has(key)).
+            filter(key => key.startsWith("Input Range ") && args.context.has(key)).
             map(key => args.context.get(key)).
             toArray();
 
diff --git a/src/draw/Painter.js b/src/draw/Painter.js
index 00be5b2d..9a114037 100644
--- a/src/draw/Painter.js
+++ b/src/draw/Painter.js
@@ -3,7 +3,7 @@ import {Format} from "src/base/Format.js"
 import {Point} from "src/math/Point.js"
 import {Rect} from "src/math/Rect.js"
 import {RestartableRng} from "src/base/RestartableRng.js"
-import {Seq} from "src/base/Seq.js"
+import {seq, Seq} from "src/base/Seq.js"
 import {Util} from "src/base/Util.js"
 
 class Painter {
@@ -242,7 +242,7 @@ class Painter {
         let lines;
         let measures;
         let height;
-        let forcedLines = new Seq(text.split("\n"));
+        let forcedLines = seq(text.split("\n"));
         for (let df = 0; ; df++) { // Note: potential for quadratic behavior.
             fontSize = maxFontSize - df;
             this.ctx.font = fontSize + "px " + fontFamily;
@@ -250,7 +250,7 @@ class Painter {
                 flatMap(line => Util.breakLine(line, area.w, s => this.ctx.measureText(s).width)).
                 toArray();
             measures = lines.map(e => this.ctx.measureText(e));
-            height = new Seq(measures).map(heightOf).sum();
+            height = seq(measures.map(heightOf)).sum();
             if (height <= area.h || fontSize <= 4) {
                 break;
             }
diff --git a/test/TestUtil.js b/test/TestUtil.js
index 92bada59..b95c6e42 100644
--- a/test/TestUtil.js
+++ b/test/TestUtil.js
@@ -3,6 +3,8 @@ import {describe} from "src/base/Describe.js"
 import {equate} from "src/base/Equate.js"
 import {WglTexturePool} from "src/webgl/WglTexturePool.js"
 import {DetailedError} from "src/base/DetailedError.js"
+import {Config} from "src/Config.js"
+Config.CHECK_WEB_GL_ERRORS_EVEN_ON_HOT_PATHS = true;
 
 /** @type {!int} */
 let assertionSubjectIndexForNextTest = 1;