ember-legacy-class-transform
Version:
The default blueprint for ember-cli addons.
199 lines • 21.7 kB
JavaScript
import * as HBS from '../types/nodes';
function unreachable() {
throw new Error('unreachable');
}
export default function build(ast) {
if (!ast) {
return '';
}
var output = [];
switch (ast.type) {
case 'Program':
{
var chainBlock = ast['chained'] && ast.body[0];
if (chainBlock) {
chainBlock['chained'] = true;
}
var body = buildEach(ast.body).join('');
output.push(body);
}
break;
case 'ElementNode':
output.push('<', ast.tag);
if (ast.attributes.length) {
output.push(' ', buildEach(ast.attributes).join(' '));
}
if (ast.modifiers.length) {
output.push(' ', buildEach(ast.modifiers).join(' '));
}
if (ast.comments.length) {
output.push(' ', buildEach(ast.comments).join(' '));
}
output.push('>');
output.push.apply(output, buildEach(ast.children));
output.push('</', ast.tag, '>');
break;
case 'AttrNode':
output.push(ast.name, '=');
var value = build(ast.value);
if (ast.value.type === 'TextNode') {
output.push('"', value, '"');
} else {
output.push(value);
}
break;
case 'ConcatStatement':
output.push('"');
ast.parts.forEach(function (node) {
if (node.type === 'StringLiteral') {
output.push(node.original);
} else {
output.push(build(node));
}
});
output.push('"');
break;
case 'TextNode':
output.push(ast.chars);
break;
case 'MustacheStatement':
{
output.push(compactJoin(['{{', pathParams(ast), '}}']));
}
break;
case 'MustacheCommentStatement':
{
output.push(compactJoin(['{{!--', ast.value, '--}}']));
}
break;
case 'ElementModifierStatement':
{
output.push(compactJoin(['{{', pathParams(ast), '}}']));
}
break;
case 'PathExpression':
output.push(ast.original);
break;
case 'SubExpression':
{
output.push('(', pathParams(ast), ')');
}
break;
case 'BooleanLiteral':
output.push(ast.value ? 'true' : 'false');
break;
case 'BlockStatement':
{
var lines = [];
if (ast['chained']) {
lines.push(['{{else ', pathParams(ast), '}}'].join(''));
} else {
lines.push(openBlock(ast));
}
lines.push(build(ast.program));
if (ast.inverse) {
if (!ast.inverse['chained']) {
lines.push('{{else}}');
}
lines.push(build(ast.inverse));
}
if (!ast['chained']) {
lines.push(closeBlock(ast));
}
output.push(lines.join(''));
}
break;
case 'PartialStatement':
{
output.push(compactJoin(['{{>', pathParams(ast), '}}']));
}
break;
case 'CommentStatement':
{
output.push(compactJoin(['<!--', ast.value, '-->']));
}
break;
case 'StringLiteral':
{
output.push('"' + ast.value + '"');
}
break;
case 'NumberLiteral':
{
output.push(String(ast.value));
}
break;
case 'UndefinedLiteral':
{
output.push('undefined');
}
break;
case 'NullLiteral':
{
output.push('null');
}
break;
case 'Hash':
{
output.push(ast.pairs.map(function (pair) {
return build(pair);
}).join(' '));
}
break;
case 'HashPair':
{
output.push(ast.key + '=' + build(ast.value));
}
break;
}
return output.join('');
}
function compact(array) {
var newArray = [];
array.forEach(function (a) {
if (typeof a !== 'undefined' && a !== null && a !== '') {
newArray.push(a);
}
});
return newArray;
}
function buildEach(asts) {
return asts.map(build);
}
function pathParams(ast) {
var path = void 0;
switch (ast.type) {
case 'MustacheStatement':
case 'SubExpression':
case 'ElementModifierStatement':
case 'BlockStatement':
if (HBS.isLiteral(ast.path)) {
return String(ast.path.value);
}
path = build(ast.path);
break;
case 'PartialStatement':
path = build(ast.name);
break;
default:
return unreachable();
}
return compactJoin([path, buildEach(ast.params).join(' '), build(ast.hash)], ' ');
}
function compactJoin(array, delimiter) {
return compact(array).join(delimiter || '');
}
function blockParams(block) {
var params = block.program.blockParams;
if (params.length) {
return ' as |' + params.join(' ') + '|';
}
return null;
}
function openBlock(block) {
return ['{{#', pathParams(block), blockParams(block), '}}'].join('');
}
function closeBlock(block) {
return ['{{/', build(block.path), '}}'].join('');
}
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* as HBS from '../types/nodes';\nfunction unreachable() {\n    throw new Error('unreachable');\n}\nexport default function build(ast) {\n    if (!ast) {\n        return '';\n    }\n    const output = [];\n    switch (ast.type) {\n        case 'Program':\n            {\n                const chainBlock = ast['chained'] && ast.body[0];\n                if (chainBlock) {\n                    chainBlock['chained'] = true;\n                }\n                const body = buildEach(ast.body).join('');\n                output.push(body);\n            }\n            break;\n        case 'ElementNode':\n            output.push('<', ast.tag);\n            if (ast.attributes.length) {\n                output.push(' ', buildEach(ast.attributes).join(' '));\n            }\n            if (ast.modifiers.length) {\n                output.push(' ', buildEach(ast.modifiers).join(' '));\n            }\n            if (ast.comments.length) {\n                output.push(' ', buildEach(ast.comments).join(' '));\n            }\n            output.push('>');\n            output.push.apply(output, buildEach(ast.children));\n            output.push('</', ast.tag, '>');\n            break;\n        case 'AttrNode':\n            output.push(ast.name, '=');\n            const value = build(ast.value);\n            if (ast.value.type === 'TextNode') {\n                output.push('\"', value, '\"');\n            } else {\n                output.push(value);\n            }\n            break;\n        case 'ConcatStatement':\n            output.push('\"');\n            ast.parts.forEach(node => {\n                if (node.type === 'StringLiteral') {\n                    output.push(node.original);\n                } else {\n                    output.push(build(node));\n                }\n            });\n            output.push('\"');\n            break;\n        case 'TextNode':\n            output.push(ast.chars);\n            break;\n        case 'MustacheStatement':\n            {\n                output.push(compactJoin(['{{', pathParams(ast), '}}']));\n            }\n            break;\n        case 'MustacheCommentStatement':\n            {\n                output.push(compactJoin(['{{!--', ast.value, '--}}']));\n            }\n            break;\n        case 'ElementModifierStatement':\n            {\n                output.push(compactJoin(['{{', pathParams(ast), '}}']));\n            }\n            break;\n        case 'PathExpression':\n            output.push(ast.original);\n            break;\n        case 'SubExpression':\n            {\n                output.push('(', pathParams(ast), ')');\n            }\n            break;\n        case 'BooleanLiteral':\n            output.push(ast.value ? 'true' : 'false');\n            break;\n        case 'BlockStatement':\n            {\n                const lines = [];\n                if (ast['chained']) {\n                    lines.push(['{{else ', pathParams(ast), '}}'].join(''));\n                } else {\n                    lines.push(openBlock(ast));\n                }\n                lines.push(build(ast.program));\n                if (ast.inverse) {\n                    if (!ast.inverse['chained']) {\n                        lines.push('{{else}}');\n                    }\n                    lines.push(build(ast.inverse));\n                }\n                if (!ast['chained']) {\n                    lines.push(closeBlock(ast));\n                }\n                output.push(lines.join(''));\n            }\n            break;\n        case 'PartialStatement':\n            {\n                output.push(compactJoin(['{{>', pathParams(ast), '}}']));\n            }\n            break;\n        case 'CommentStatement':\n            {\n                output.push(compactJoin(['<!--', ast.value, '-->']));\n            }\n            break;\n        case 'StringLiteral':\n            {\n                output.push(`\"${ast.value}\"`);\n            }\n            break;\n        case 'NumberLiteral':\n            {\n                output.push(String(ast.value));\n            }\n            break;\n        case 'UndefinedLiteral':\n            {\n                output.push('undefined');\n            }\n            break;\n        case 'NullLiteral':\n            {\n                output.push('null');\n            }\n            break;\n        case 'Hash':\n            {\n                output.push(ast.pairs.map(pair => {\n                    return build(pair);\n                }).join(' '));\n            }\n            break;\n        case 'HashPair':\n            {\n                output.push(`${ast.key}=${build(ast.value)}`);\n            }\n            break;\n    }\n    return output.join('');\n}\nfunction compact(array) {\n    const newArray = [];\n    array.forEach(a => {\n        if (typeof a !== 'undefined' && a !== null && a !== '') {\n            newArray.push(a);\n        }\n    });\n    return newArray;\n}\nfunction buildEach(asts) {\n    return asts.map(build);\n}\nfunction pathParams(ast) {\n    let path;\n    switch (ast.type) {\n        case 'MustacheStatement':\n        case 'SubExpression':\n        case 'ElementModifierStatement':\n        case 'BlockStatement':\n            if (HBS.isLiteral(ast.path)) {\n                return String(ast.path.value);\n            }\n            path = build(ast.path);\n            break;\n        case 'PartialStatement':\n            path = build(ast.name);\n            break;\n        default:\n            return unreachable();\n    }\n    return compactJoin([path, buildEach(ast.params).join(' '), build(ast.hash)], ' ');\n}\nfunction compactJoin(array, delimiter) {\n    return compact(array).join(delimiter || '');\n}\nfunction blockParams(block) {\n    const params = block.program.blockParams;\n    if (params.length) {\n        return ` as |${params.join(' ')}|`;\n    }\n    return null;\n}\nfunction openBlock(block) {\n    return ['{{#', pathParams(block), blockParams(block), '}}'].join('');\n}\nfunction closeBlock(block) {\n    return ['{{/', build(block.path), '}}'].join('');\n}"]}