From 46a6833e432a26440c0a5a4099b622b56ea41e2b Mon Sep 17 00:00:00 2001
From: Borys_Levytskyi <blevitsky@yandex.ru>
Date: Sun, 27 Nov 2016 11:22:38 +0200
Subject: [PATCH] Basic implementation of bitwise expressions

---
 .vscode/settings.json                         |   3 +
 package.json                                  |   3 +
 .../BitwiseOperationExpressionView.jsx        | 123 ++++++++++++++++++
 .../results/ExpressionResultView.jsx          |  14 +-
 .../results/ListOfNumbersExpressionView.jsx   |   8 +-
 src/app/index.jsx                             |   2 +-
 6 files changed, 142 insertions(+), 11 deletions(-)
 create mode 100644 .vscode/settings.json
 create mode 100644 src/app/components/results/BitwiseOperationExpressionView.jsx

diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..ccdda08
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "typescript.check.workspaceVersion": false
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 8c739c0..136c61d 100644
--- a/package.json
+++ b/package.json
@@ -46,5 +46,8 @@
     "lodash": "^4.17.2",
     "react": "^15.4.0",
     "react-dom": "^15.4.0"
+  },
+  "scripts": {
+    "serv": "webpack-dev-server --content-base ./src"
   }
 }
diff --git a/src/app/components/results/BitwiseOperationExpressionView.jsx b/src/app/components/results/BitwiseOperationExpressionView.jsx
new file mode 100644
index 0000000..5ec3d50
--- /dev/null
+++ b/src/app/components/results/BitwiseOperationExpressionView.jsx
@@ -0,0 +1,123 @@
+import React from 'react';
+import * as expression from '../../expression';
+import formatter from '../../formatter';
+
+export default class BitwiseOperationEpxressionView extends React.Component {
+    render() {
+        var rows = this.getRows();
+        if(!rows) {
+            return null;
+        }
+
+        return <table className="expression">
+                    <tbody>{rows}</tbody>
+                </table>
+    }
+
+    getRows() {
+        const expr = this.props.expression;
+
+        if(expr instanceof expression.SingleOperandExpression) {
+            const m = BitwiseExpressionViewModel.buildNot(expr);
+            return m.items.map((itm, i) => <ExpressionRow key={i} {...itm} maxNumberOfBits={m.maxNumberOfBits} />);
+        }
+
+        if(expr instanceof expression.MultipleOperandsExpression) {
+            const m = BitwiseExpressionViewModel.buildMultiple(expr);
+            return m.items.map((itm, i) => <ExpressionRow key={i} {...itm} maxNumberOfBits={m.maxNumberOfBits} />);
+        }
+
+        return null;
+    }
+}
+
+class ExpressionRow extends React.Component {
+    render() {
+        const { sign, label, bin, other, css, maxNumberOfBits } = this.props;
+        
+        return <tr className={css}>
+                    <td className="sign">{sign}</td>
+                    <td className="label">{label}</td>
+                    <td className="bin">{formatter.padLeft(bin, maxNumberOfBits, '0')}</td>
+                    <td className="other">{other}</td>
+                </tr>;
+    }
+}
+
+class BitwiseExpressionViewModel {
+
+    constructor() {
+        this.items = [];
+        this.maxNumberOfBits = 0;
+    }
+
+    static buildMultiple (expr) {
+        var op = expr.expressions[0],
+            i = 1, l = expr.expressions.length,
+            ex, m = new BitwiseExpressionViewModel();
+
+        m.addOperand(op);
+
+        for (;i<l;i++) {
+            ex = expr.expressions[i];
+            op = ex.apply(op.value);
+
+            if(ex.isShiftExpression()){
+                m.addShiftExpressionResult(ex, op);
+            } else {
+                m.addExpression(ex);
+                m.addExpressionResult(op);
+            }
+        }
+
+        m.maxNumberOfBits = m.emphasizeBytes(m.maxNumberOfBits);
+        return m;
+    };
+
+    static buildNot (expression) {
+        var m = new BitwiseExpressionViewModel();
+        m.addExpression(expression);
+        m.addExpressionResult(expression.apply());
+        m.maxNumberOfBits = m.emphasizeBytes(m.maxNumberOfBits);
+        return m;
+    };
+
+    addOperand(operand) {
+        this.maxNumberOfBits = Math.max(operand.getLengthInBits(), this.maxNumberOfBits);
+        this.items.push({ sign:'', label: operand.toString(), bin: operand.bin, other: operand.other, css: ''});
+    };
+
+    addExpression(expression) {
+        this.maxNumberOfBits = Math.max(expression.operand1.getLengthInBits(), this.maxNumberOfBits);
+        this.items.push({ sign: expression.sign, label: expression.operand1.input, bin: expression.operand1.bin, other: expression.operand1.other, css: ''});
+    };
+
+    addShiftExpressionResult(expression, resultOperand) {
+        this.maxNumberOfBits = Math.max(resultOperand.getLengthInBits(), this.maxNumberOfBits);
+        this.items.push({
+            sign: expression.sign + expression.operand1.input,
+            label: resultOperand,
+            bin: resultOperand.bin,
+            other: resultOperand.other,
+            css: 'expression-result'});
+    };
+
+    addExpressionResult(operand) {
+        this.maxNumberOfBits = Math.max(operand.getLengthInBits(), this.maxNumberOfBits);
+        this.items.push({ sign:'=', label: operand.toString(), bin: operand.bin, other: operand.other, css: 'expression-result'});
+    };
+
+    emphasizeBytes = function (bits) {
+        // var cmdConfig = app.get('cmdConfig');
+        // if(cmdConfig.emphasizeBytes && bits % 8 != 0) {
+        //     if(bits < 8) {
+        //         return 8;
+        //     }
+
+        //     var n = bits - (bits % 8);
+        //     return n + 8;
+        // }
+        console.warn('[BitwiseExpressionViewModel] emphasizeBytes() not implemented');
+        return bits;
+    };
+}
\ No newline at end of file
diff --git a/src/app/components/results/ExpressionResultView.jsx b/src/app/components/results/ExpressionResultView.jsx
index abdd573..a17e804 100644
--- a/src/app/components/results/ExpressionResultView.jsx
+++ b/src/app/components/results/ExpressionResultView.jsx
@@ -1,5 +1,7 @@
 import React from 'react'
 import ListOfNumbersExpressionView from './ListOfNumbersExpressionView';
+import BitwiseOperationExpressionView from './BitwiseOperationExpressionView';
+
 import * as expression from '../../expression'; 
 
 export default class ExpressionResultView extends React.Component {
@@ -8,10 +10,16 @@ export default class ExpressionResultView extends React.Component {
 
         if(expr instanceof expression.ListOfNumbersExpression) {
             return <div>
-                <b>Expression: {expr.expressionString}</b>
-                <ListOfNumbersExpressionView expression={expr} />
-            </div>
+                        <ListOfNumbersExpressionView expression={expr} />
+                    </div>
         }
+        if(expr instanceof expression.SingleOperandExpression || expr instanceof expression.MultipleOperandsExpression) {
+            return <div>
+                        <BitwiseOperationExpressionView expression={expr} />
+                    </div>
+        }
+
+        console.log('[BitwiseOperationExpressionView] render()', expr);
 
         return <b>Expression: {expr.expressionString}</b>;
     } 
diff --git a/src/app/components/results/ListOfNumbersExpressionView.jsx b/src/app/components/results/ListOfNumbersExpressionView.jsx
index d180bd3..414b833 100644
--- a/src/app/components/results/ListOfNumbersExpressionView.jsx
+++ b/src/app/components/results/ListOfNumbersExpressionView.jsx
@@ -5,17 +5,11 @@ export default class ListOfNumersExpressionView extends React.Component {
     render() {
         const expr = this.props.expression;
         const numberRows = expr.numbers.map((n, i) => <OperandView key={i} operand={n} maxBitsLegnth={expr.maxBitsLegnth} />);
-        console.log('Numbers: ', expr.numbers);
-        return <div>
-                <div>
-                    !{expr.toString()}!
-                </div>
-                <table className="expression">
+        return <table className="expression">
                         <tbody>
                             {numberRows}
                         </tbody>        
                     </table>
-        </div>
     }
 }
 
diff --git a/src/app/index.jsx b/src/app/index.jsx
index ec9d955..15213b5 100644
--- a/src/app/index.jsx
+++ b/src/app/index.jsx
@@ -10,7 +10,7 @@ commands.initialize(cmd);
 
 // cmd.execute('1');
 // cmd.execute('2');
-// cmd.execute('3');
+cmd.execute('~3');
 
 var root = <AppRoot appState={appState} />;
 ReactDOM.render(root, document.getElementById('root'));
\ No newline at end of file