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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| import { NodeTransform } from '../transform' | ||
| import { findDir } from '../utils' | ||
| import { | ||
| createCallExpression, | ||
| createFunctionExpression, | ||
| createSimpleExpression, | ||
| ExpressionNode, | ||
| NodeTypes, | ||
| PlainElementNode, | ||
| SimpleExpressionNode | ||
| } from '../ast' | ||
| import { stringifyExpression } from './transformExpression' | ||
|
|
||
| const seen = new WeakSet() | ||
| const extractKeyValueRE = /(\w+)\s*:\s*"*(.*?)"*\s*[,}\n]/g | ||
|
|
||
| export const transformScope: NodeTransform = (node, context) => { | ||
| if (node.type === NodeTypes.ELEMENT) { | ||
| const dir = findDir(node, 'scope') | ||
| if (!dir || seen.has(node)) { | ||
| return | ||
| } | ||
| seen.add(node) | ||
| return () => { | ||
| const codegenNode = | ||
| node.codegenNode || | ||
| (context.currentNode as PlainElementNode).codegenNode | ||
| if (codegenNode && codegenNode.type === NodeTypes.VNODE_CALL) { | ||
| node.codegenNode = createCallExpression( | ||
| createFunctionExpression( | ||
| transformScopeExpression(dir.exp!), | ||
| codegenNode | ||
| ) | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| export function transformScopeExpression( | ||
| exp: string | ExpressionNode | ||
| ): ExpressionNode[] { | ||
| const params: SimpleExpressionNode[] = [] | ||
| const rExpString = stringifyExpression(exp) | ||
| let match | ||
| while ((match = extractKeyValueRE.exec(rExpString))) { | ||
| params.push(createSimpleExpression(`${match[1]}=${match[2]}`)) | ||
| } | ||
| return params | ||
| } | ||
|
|
||
| export const trackVScopeScopes: NodeTransform = (node, context) => { | ||
| if (node.type === NodeTypes.ELEMENT) { | ||
| const vLet = findDir(node, 'scope') | ||
| if (vLet) { | ||
| const keys: string[] = [] | ||
| let match | ||
| while ((match = extractKeyValueRE.exec(vLet.exp!.loc.source))) { | ||
| keys.push(match[1]) | ||
| } | ||
| if (!__BROWSER__ && context.prefixIdentifiers) { | ||
| keys.forEach(context.addIdentifiers) | ||
| } | ||
| return () => { | ||
| if (!__BROWSER__ && context.prefixIdentifiers) { | ||
| keys.forEach(context.removeIdentifiers) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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