本文整理匯總了TypeScript中@glimmer/syntax.traverse函數的典型用法代碼示例。如果您正苦於以下問題：TypeScript traverse函數的具體用法？TypeScript traverse怎麽用？TypeScript traverse使用的例子？那麽, 這裏精選的函數代碼示例或許可以為您提供幫助。
在下文中一共展示了traverse函數的10個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: traversalEqual
function traversalEqual(node, expectedTraversal) {
let actualTraversal = [];
traverse(node, {
All: {
enter(node) { actualTraversal.push(['enter', node]); },
exit(node) { actualTraversal.push(['exit', node]); }
}
});
QUnit.assert.deepEqual(
actualTraversal.map(a => `${a[0]} ${a[1].type}`),
expectedTraversal.map(a => `${a[0]} ${a[1].type}`)
);
let nodesEqual = true;
for (let i = 0; i < actualTraversal.length; i++) {
if (actualTraversal[i][1] !== expectedTraversal[i][1]) {
nodesEqual = false;
break;
}
}
QUnit.assert.ok(nodesEqual, "Actual nodes match expected nodes");
}示例2: parse
QUnit.test('Should recurrsively walk the keys in the transformed node', () => {
let ast = parse(`{{#foo}}{{#bar}}{{baz}}{{/bar}}{{else}}{{#bar}}{{bat}}{{/bar}}{{/foo}}`);
traverse(ast, {
BlockStatement: function(node) {
if (node.path.original === 'foo') {
return b.block(b.path('x-foo'), node.params, node.hash, node.program, node.inverse, node.loc);
} else if (node.path.original === 'bar') {
return b.block(b.path('x-bar'), node.params, node.hash, node.program, node.inverse, node.loc);
}
return;
},
MustacheStatement: function(node) {
if (node.path.original === 'baz') {
return b.mustache('x-baz');
} else if (node.path.original === 'bat') {
return b.mustache('x-bat');
}
return;
}
});
astEqual(ast, `{{#x-foo}}{{#x-bar}}{{x-baz}}{{/x-bar}}{{else}}{{#x-bar}}{{x-bat}}{{/x-bar}}{{/x-foo}}`);
});示例3: traversalEqual
function traversalEqual(node: AST.Node, expectedTraversal: Array<[string, AST.Node]>) {
let actualTraversal: Array<[string, AST.BaseNode]> = [];
traverse(node, {
All: {
enter(node) { actualTraversal.push(['enter', node]); },
exit(node) { actualTraversal.push(['exit', node]); },
keys: {
All: {
enter(node: AST.BaseNode, key: string) { actualTraversal.push([`enter:${key}`, node]); },
exit(node: AST.BaseNode, key: string) { actualTraversal.push([`exit:${key}`, node]); },
}
}
}
});
QUnit.assert.deepEqual(
actualTraversal.map(a => `${a[0]} ${a[1].type}`),
expectedTraversal.map(a => `${a[0]} ${a[1].type}`)
);
let nodesEqual = true;
for (let i = 0; i < actualTraversal.length; i++) {
if (actualTraversal[i][1] !== expectedTraversal[i][1]) {
nodesEqual = false;
break;
}
}
QUnit.assert.ok(nodesEqual, "Actual nodes match expected nodes");
}示例4: traverse
assert.throws(() => {
traverse(ast, {
MustacheStatement: {
[eventName](node) {
if (node.path.parts[0] === 'z') {
return [];
}
}
}
});
}, cannotRemoveNode(attr.value, attr, 'value'));示例5: traverse
assert.throws(() => {
traverse(ast, {
MustacheStatement: {
[eventName](node: AST.MustacheStatement) {
if (node.path.type === 'PathExpression' && node.path.parts[0] === 'z') {
return [];
}
return;
}
}
});
}, cannotRemoveNode(attr.value, attr, 'value'));示例6: array
QUnit.test(`[${eventName}] Replacing self in an array (returning null)`, () => {
let ast = parse(`{{x}}{{y}}{{z}}`);
traverse(ast, {
MustacheStatement: {
[eventName](node) {
if (node.path.parts[0] === 'y') {
return null;
}
}
}
});
astEqual(ast, `{{x}}{{z}}`);
});示例7: key
QUnit.test(`[${eventName}] Replacing self in a key (returning an array with a single node)`, () => {
let ast = parse(`<x y={{z}} />`);
traverse(ast, {
MustacheStatement: {
[eventName](node) {
if (node.path.parts[0] === 'z') {
return [b.mustache('a')];
}
}
}
});
astEqual(ast, `<x y={{a}} />`);
});示例8: parse
QUnit.test('Should recurrsively walk the transformed node', assert => {
let ast = parse(`{{x}}{{y}}{{z}}`);
traverse(ast, {
MustacheStatement: function(node) {
if (node.path.original === 'x') {
return b.mustache('y');
} else if (node.path.original === 'y') {
return b.mustache('z');
}
}
});
astEqual(ast, `{{z}}{{z}}{{z}}`);
});示例9: key
QUnit.test(`[${eventName}] Replacing self in a key (returning a node)`, () => {
let ast = parse(`<x y={{z}} />`);
traverse(ast, {
MustacheStatement: {
[eventName](node: AST.MustacheStatement) {
if (node.path.type === 'PathExpression' && node.path.parts[0] === 'z') {
return b.mustache('a');
}
return;
}
}
});
astEqual(ast, `<x y={{a}} />`);
});示例10: array
QUnit.test(`[${eventName}] Replacing self in an array (returning an array with a single node)`, () => {
let ast = parse(`{{x}}{{y}}{{z}}`);
traverse(ast, {
MustacheStatement: {
[eventName](node: AST.MustacheStatement) {
if (node.path.type === 'PathExpression' && node.path.parts[0] === 'y') {
return [b.mustache('a')];
}
return;
}
}
});
astEqual(ast, `{{x}}{{a}}{{z}}`);
});