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feat(javascript): add ReactUtil and ReactUtilTest #81
This commit adds the `ReactUtil` object, which contains functions for extracting React components from JavaScript files. It also includes the corresponding unit test `ReactUtilTest` to ensure the functionality of the `ReactUtil` methods.
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94 changes: 94 additions & 0 deletions
94
javascript/src/main/kotlin/cc/unitmesh/ide/javascript/util/ReactUtil.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package cc.unitmesh.ide.javascript.util | ||
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| import cc.unitmesh.ide.javascript.flow.DsComponent | ||
| import com.intellij.lang.ecmascript6.psi.ES6ExportDeclaration | ||
| import com.intellij.lang.ecmascript6.psi.ES6ExportDefaultAssignment | ||
| import com.intellij.lang.javascript.psi.JSFile | ||
| import com.intellij.lang.javascript.psi.JSFunctionExpression | ||
| import com.intellij.lang.javascript.psi.JSReferenceExpression | ||
| import com.intellij.lang.javascript.psi.JSVariable | ||
| import com.intellij.lang.javascript.psi.ecma6.TypeScriptClass | ||
| import com.intellij.lang.javascript.psi.ecma6.TypeScriptFunction | ||
| import com.intellij.lang.javascript.psi.ecma6.TypeScriptFunctionExpression | ||
| import com.intellij.lang.javascript.psi.ecma6.TypeScriptVariable | ||
| import com.intellij.lang.javascript.psi.resolve.JSResolveResult | ||
| import com.intellij.psi.PsiNameIdentifierOwner | ||
| import com.intellij.psi.util.PsiTreeUtil | ||
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| object ReactUtil { | ||
| private fun getExportElements(file: JSFile): List<PsiNameIdentifierOwner> { | ||
| val exportDeclarations = | ||
| PsiTreeUtil.getChildrenOfTypeAsList(file, ES6ExportDeclaration::class.java) | ||
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| val map = exportDeclarations.map { exportDeclaration -> | ||
| exportDeclaration.exportSpecifiers | ||
| .asSequence() | ||
| .mapNotNull { | ||
| it.alias?.findAliasedElement() | ||
| } | ||
| .filterIsInstance<PsiNameIdentifierOwner>() | ||
| .toList() | ||
| }.flatten() | ||
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| val defaultAssignments = PsiTreeUtil.getChildrenOfTypeAsList(file, ES6ExportDefaultAssignment::class.java) | ||
| val defaultAssignment = defaultAssignments.mapNotNull { | ||
| val jsReferenceExpression = it.expression as? JSReferenceExpression ?: return@mapNotNull null | ||
| val resolveReference = JSResolveResult.resolveReference(jsReferenceExpression) | ||
| resolveReference.firstOrNull() as? PsiNameIdentifierOwner | ||
| } | ||
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| return map + defaultAssignment | ||
| } | ||
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| fun tsxComponentToComponent(jsFile: JSFile): List<DsComponent> { | ||
| val exportElements = getExportElements(jsFile) | ||
| return exportElements.map { psiElement -> | ||
| val name = psiElement.name ?: return@map null | ||
| val path = jsFile.virtualFile.canonicalPath ?: return@map null | ||
| return@map when (psiElement) { | ||
| is TypeScriptFunction -> { | ||
| DsComponent(name = name, path) | ||
| } | ||
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| is TypeScriptClass -> { | ||
| DsComponent(name = name, path) | ||
| } | ||
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| is TypeScriptVariable -> { | ||
| val funcExpr = PsiTreeUtil.findChildrenOfType(psiElement, TypeScriptFunctionExpression::class.java) | ||
| .firstOrNull() ?: return@map null | ||
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| val map = funcExpr.parameterList?.parameters?.mapNotNull { parameter -> | ||
| if (parameter.typeElement != null) { | ||
| parameter.typeElement | ||
| } else { | ||
| null | ||
| } | ||
| } ?: emptyList() | ||
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| DsComponent(name = name, path) | ||
| } | ||
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| is JSVariable -> { | ||
| val funcExpr = PsiTreeUtil.findChildrenOfType(psiElement, JSFunctionExpression::class.java) | ||
| .firstOrNull() ?: return@map null | ||
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| val map = funcExpr.parameterList?.parameters?.mapNotNull { parameter -> | ||
| if (parameter.typeElement != null) { | ||
| parameter.typeElement | ||
| } else { | ||
| null | ||
| } | ||
| } ?: emptyList() | ||
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| DsComponent(name = name, path) | ||
| } | ||
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| else -> { | ||
| println("unknown type: ${psiElement::class.java}") | ||
| null | ||
| } | ||
| } | ||
| }.filterNotNull() | ||
| } | ||
| } |
28 changes: 28 additions & 0 deletions
28
javascript/src/test/kotlin/cc/unitmesh/ide/javascript/util/ReactUtilTest.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,28 @@ | ||
| package cc.unitmesh.ide.javascript.util; | ||
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| import com.intellij.lang.javascript.JavascriptLanguage | ||
| import com.intellij.lang.javascript.dialects.TypeScriptJSXLanguageDialect | ||
| import com.intellij.lang.javascript.dialects.TypeScriptLanguageDialect | ||
| import com.intellij.lang.javascript.psi.JSFile | ||
| import com.intellij.lang.javascript.psi.ecmal4.JSClass | ||
| import com.intellij.psi.PsiFileFactory | ||
| import com.intellij.testFramework.LightPlatformTestCase | ||
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| class ReactUtilTest : LightPlatformTestCase() { | ||
| fun testShouldHandleExportReactComponent() { | ||
| val code = """ | ||
| import type { AppProps } from 'next/app'; | ||
| const MyApp = ({ Component, pageProps }: AppProps) => ( | ||
| <Component {...pageProps} /> | ||
| ); | ||
| export default MyApp; | ||
| """.trimIndent() | ||
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| val file = PsiFileFactory.getInstance(project).createFileFromText(JavascriptLanguage.INSTANCE, code) | ||
| val result = ReactUtil.tsxComponentToComponent(file as JSFile) | ||
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| assertEquals(1, result.size) | ||
| } | ||
| } |