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How to use walker.parent method in istanbul

Best JavaScript code snippet using istanbul

render-flow.js

Source:render-flow.js

1const DONOTHING = 0;2const LOCAL_TRANSFORM = 1 << 0;3const WORLD_TRANSFORM = 1 << 1;4const TRANSFORM = LOCAL_TRANSFORM | WORLD_TRANSFORM;5const UPDATE_RENDER_DATA = 1 << 2;6const OPACITY = 1 << 3;7const COLOR = 1 << 4;8const RENDER = 1 << 5;9const CUSTOM_IA_RENDER = 1 << 6;10const CHILDREN = 1 << 7;11const POST_UPDATE_RENDER_DATA = 1 << 8;12const POST_RENDER = 1 << 9;13const FINAL = 1 << 10;14let _walker = null;15let _cullingMask = 0;16// 17function RenderFlow () {18    this._func = init;19    this._next = null;20}21let _proto = RenderFlow.prototype;22_proto._doNothing = function () {23};24_proto._localTransform = function (node) {25    node._updateLocalMatrix();26    node._renderFlag &= ~LOCAL_TRANSFORM;27    this._next._func(node);28};29_proto._worldTransform = function (node) {30    _walker.worldMatDirty ++;31    let t = node._matrix;32    let position = node._position;33    t.m12 = position.x;34    t.m13 = position.y;35    node._mulMat(node._worldMatrix, node._parent._worldMatrix, t);36    node._renderFlag &= ~WORLD_TRANSFORM;37    this._next._func(node);38    _walker.worldMatDirty --;39};40_proto._color = function (node) {41    let comp = node._renderComponent;42    if (comp) {43        comp._updateColor();44    }45    else {46        node._renderFlag &= ~COLOR;47    }48    this._next._func(node);49};50_proto._opacity = function (node) {51    _walker.parentOpacityDirty++;52    node._renderFlag &= ~OPACITY;53    this._next._func(node);54    _walker.parentOpacityDirty--;55};56_proto._updateRenderData = function (node) {57    let comp = node._renderComponent;58    comp._assembler.updateRenderData(comp);59    node._renderFlag &= ~UPDATE_RENDER_DATA;60    this._next._func(node);61};62_proto._render = function (node) {63    let comp = node._renderComponent;64    _walker._commitComp(comp, comp._assembler, node._cullingMask);65    this._next._func(node);66};67_proto._customIARender = function (node) {68    let comp = node._renderComponent;69    _walker._commitIA(comp, comp._assembler, node._cullingMask);70    this._next._func(node);71};72_proto._children = function (node) {73    let cullingMask = _cullingMask;74    let parentOpacity = _walker.parentOpacity;75    _walker.parentOpacity *= (node._opacity / 255);76    let worldTransformFlag = _walker.worldMatDirty ? WORLD_TRANSFORM : 0;77    let worldOpacityFlag = _walker.parentOpacityDirty ? COLOR : 0;78    let children = node._children;79    for (let i = 0, l = children.length; i < l; i++) {80        let c = children[i];81        // Advance the modification of the flag to avoid node attribute modification is invalid when opacity === 0.82        c._renderFlag |= worldTransformFlag | worldOpacityFlag;83        if (!c._activeInHierarchy || c._opacity === 0) continue;84        _cullingMask = c._cullingMask = c.groupIndex === 0 ? cullingMask : 1 << c.groupIndex;85        // TODO: Maybe has better way to implement cascade opacity86        c._color.a = c._opacity * _walker.parentOpacity;87        flows[c._renderFlag]._func(c);88        c._color.a = 255;89    }90    _walker.parentOpacity = parentOpacity;91    this._next._func(node);92    _cullingMask = cullingMask;93};94_proto._postUpdateRenderData = function (node) {95    let comp = node._renderComponent;96    comp._postAssembler && comp._postAssembler.updateRenderData(comp);97    node._renderFlag &= ~POST_UPDATE_RENDER_DATA;98    this._next._func(node);99};100_proto._postRender = function (node) {101    let comp = node._renderComponent;102    _walker._commitComp(comp, comp._postAssembler, node._cullingMask);103    this._next._func(node);104};105const EMPTY_FLOW = new RenderFlow();106EMPTY_FLOW._func = EMPTY_FLOW._doNothing;107EMPTY_FLOW._next = EMPTY_FLOW;108let flows = {};109function createFlow (flag, next) {110    let flow = new RenderFlow();111    flow._next = next || EMPTY_FLOW;112    switch (flag) {113        case DONOTHING: 114            flow._func = flow._doNothing;115            break;116        case LOCAL_TRANSFORM: 117            flow._func = flow._localTransform;118            break;119        case WORLD_TRANSFORM: 120            flow._func = flow._worldTransform;121            break;122        case COLOR:123            flow._func = flow._color;124            break;125        case OPACITY:126            flow._func = flow._opacity;127            break;128        case UPDATE_RENDER_DATA:129            flow._func = flow._updateRenderData;130            break;131        case RENDER: 132            flow._func = flow._render;133            break;134        case CUSTOM_IA_RENDER:135            flow._func = flow._customIARender;136            break;137        case CHILDREN: 138            flow._func = flow._children;139            break;140        case POST_UPDATE_RENDER_DATA: 141            flow._func = flow._postUpdateRenderData;142            break;143        case POST_RENDER: 144            flow._func = flow._postRender;145            break;146    }147    return flow;148}149function getFlow (flag) {150    let flow = null;151    let tFlag = FINAL;152    while (tFlag > 0) {153        if (tFlag & flag)154            flow = createFlow(tFlag, flow);155        tFlag = tFlag >> 1;156    }157    return flow;158}159function render (scene) {160    _cullingMask = 1 << scene.groupIndex;161    if (scene._renderFlag & WORLD_TRANSFORM) {162        _walker.worldMatDirty ++;163        scene._calculWorldMatrix();164        scene._renderFlag &= ~WORLD_TRANSFORM;165        flows[scene._renderFlag]._func(scene);166        _walker.worldMatDirty --;167    }168    else {169        flows[scene._renderFlag]._func(scene);170    }171}172// 173function init (node) {174    let flag = node._renderFlag;175    let r = flows[flag] = getFlow(flag);176    r._func(node);177}178RenderFlow.flows = flows;179RenderFlow.createFlow = createFlow;180RenderFlow.render = render;181RenderFlow.init = function (walker) {182    _walker = walker;183    flows[0] = EMPTY_FLOW;184    for (let i = 1; i < FINAL; i++) {185        flows[i] = new RenderFlow();186    }187};188RenderFlow.FLAG_DONOTHING = DONOTHING;189RenderFlow.FLAG_LOCAL_TRANSFORM = LOCAL_TRANSFORM;190RenderFlow.FLAG_WORLD_TRANSFORM = WORLD_TRANSFORM;191RenderFlow.FLAG_TRANSFORM = TRANSFORM;192RenderFlow.FLAG_COLOR = COLOR;193RenderFlow.FLAG_OPACITY = OPACITY;194RenderFlow.FLAG_UPDATE_RENDER_DATA = UPDATE_RENDER_DATA;195RenderFlow.FLAG_RENDER = RENDER;196RenderFlow.FLAG_CUSTOM_IA_RENDER = CUSTOM_IA_RENDER;197RenderFlow.FLAG_CHILDREN = CHILDREN;198RenderFlow.FLAG_POST_UPDATE_RENDER_DATA = POST_UPDATE_RENDER_DATA;199RenderFlow.FLAG_POST_RENDER = POST_RENDER;200RenderFlow.FLAG_FINAL = FINAL;...

Using AI Code Generation

1var fs = require('fs');2var istanbul = require('istanbul');3var instrumenter = new istanbul.Instrumenter();4var code = fs.readFileSync('test.js', 'utf8');5var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');6fs.writeFileSync('test-istanbul.js', instrumentedCode);7var walker = new istanbul.CodeWalker();8walker.walk(code, function (node, metadata) {9    if (metadata.isFunction) {10        console.log("Function: " + metadata.name);11        console.log("Parent: " + metadata.parent);12    }13});

Using AI Code Generation

1var istanbul = require('istanbul');2var fs = require('fs');3var walker = istanbul.walker;4var instrumenter = new istanbul.Instrumenter();5var code = fs.readFileSync('test.js', 'utf8');6var ast = istanbul.parser.parse(code);7var instrumentedCode = instrumenter.instrumentSync(code, 'test.js');8console.log(instrumentedCode);9var callback = function (node, state, c) {10    if (node.type === 'FunctionDeclaration') {11        console.log(node.id.name);12        console.log(walker.parent(state));13    }14    c(node, state);15};16walker.walk(ast, callback, null);17function test() {18    var a = 10;19    var b = a;20    return b;21}22{ node:23   { type: 'Program',

Using AI Code Generation

1var fs = require('fs'),2    istanbul = require('istanbul'),3    instrumenter = new istanbul.Instrumenter(),4    walker = istanbul.utils.walker(),5    code = fs.readFileSync('./test.js', 'utf8'),6    instrumentedCode = instrumenter.instrumentSync(code, './test.js');7walker.on('file', function (file, stat) {8    console.log(file);9    console.log(stat);10    console.log(walker.parent());11});12walker.walkSync('./test.js', instrumentedCode);13{ dev: 16777220,14  birthtime: 2015-02-11T17:52:11.000Z }

Using AI Code Generation

1var fs = require('fs');2var path = require('path');3var walk = require('istanbul-lib-instrument').walk;4var code = fs.readFileSync(path.resolve(__dirname, 'test.js'), 'utf8');5var walker = walk.ancestor(code, {6});7walker.on('node', function (node, state) {8    if (node.type === 'FunctionDeclaration') {9        console.log('FunctionDeclaration: %s', node.id.name);10    } else if (node.type === 'FunctionExpression') {11        console.log('FunctionExpression: %s', state.name);12    }13});14walker.parent();15### walk(code, options)

Using AI Code Generation

1var istanbul = require('istanbul');2var walker = istanbul.utils.walker();3walker.on('node', function (node, st, c) {4    console.log('node:', node);5    console.log('st:', st);6    console.log('c:', c);7    console.log('parent:', walker.parent());8    c(node, st);9});10walker.on('end', function () {11    console.log('done');12});13walker.walk('function foo() { return 1; }');

Using AI Code Generation

1var walker = require('istanbul').utils.ast;2var esprima = require('esprima');3var code = 'function foo() { var x = 1; }';4var ast = esprima.parse(code);5var node = walker.findNode(ast, 'Identifier', 'x');6console.log(walker.parent(ast, node).type);

Using AI Code Generation

1var walker = require('istanbul').lib.astw;2var code = 'var foo = 1;';3var ast = walker.parse(code);4walker.walk(ast, function (node) {5  if (node.type === 'VariableDeclarator') {6    var parent = walker.parent();7    console.log(parent);8  }9});10### `require('istanbul').lib.astw`11The `lib.astw` module provides a method to walk an [esprima](

Using AI Code Generation

1var walker = require('istanbul-walker');2var esprima = require('esprima');3var fs = require('fs');4var estraverse = require('estraverse');5var escodegen = require('escodegen');6var escope = require('escope');7var code = fs.readFileSync('test.js', 'utf8');8var ast = esprima.parse(code, {loc: true, range: true, tokens: true});9var scopeManager = escope.analyze(ast, {ecmaVersion: 6, sourceType: 'module'});10var scope = scopeManager.acquire(ast);11var parent = walker.parent(ast, {loc: true, range: true, tokens: true}, scopeManager);12var skip = walker.skip(ast, {loc: true, range: true, tokens: true}, scopeManager);

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