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package org.jetbrains.dokka
import java.util.ArrayDeque
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.resolve.*
import org.jetbrains.kotlin.resolve.scopes.*
import org.jetbrains.kotlin.name.*
import org.jetbrains.kotlin.idea.kdoc.getResolutionScope
import org.intellij.markdown.*
import org.jetbrains.kotlin.psi.JetDeclarationWithBody
import org.jetbrains.kotlin.psi.JetBlockExpression
public fun buildContent(tree: MarkdownNode, linkResolver: (String) -> ContentBlock): MutableContent {
val result = MutableContent()
buildContentTo(tree, result, linkResolver)
return result
}
public fun buildContentTo(tree: MarkdownNode, target: ContentBlock, linkResolver: (String) -> ContentBlock) {
// println(tree.toTestString())
val nodeStack = ArrayDeque<ContentBlock>()
nodeStack.push(target)
tree.visit {node, processChildren ->
val parent = nodeStack.peek()!!
fun appendNodeWithChildren(content: ContentBlock) {
nodeStack.push(content)
processChildren()
parent.append(nodeStack.pop())
}
when (node.type) {
MarkdownElementTypes.UNORDERED_LIST -> appendNodeWithChildren(ContentUnorderedList())
MarkdownElementTypes.ORDERED_LIST -> appendNodeWithChildren(ContentOrderedList())
MarkdownElementTypes.LIST_ITEM -> appendNodeWithChildren(ContentListItem())
MarkdownElementTypes.EMPH -> appendNodeWithChildren(ContentEmphasis())
MarkdownElementTypes.STRONG -> appendNodeWithChildren(ContentStrong())
MarkdownElementTypes.CODE_SPAN -> appendNodeWithChildren(ContentCode())
MarkdownElementTypes.CODE_BLOCK -> appendNodeWithChildren(ContentBlockCode())
MarkdownElementTypes.PARAGRAPH -> appendNodeWithChildren(ContentParagraph())
MarkdownElementTypes.INLINE_LINK -> {
val label = node.child(MarkdownElementTypes.LINK_TEXT)?.child(MarkdownTokenTypes.TEXT)
val destination = node.child(MarkdownElementTypes.LINK_DESTINATION)
if (label != null) {
if (destination != null) {
val link = ContentExternalLink(destination.text)
link.append(ContentText(label.text))
parent.append(link)
} else {
val link = ContentExternalLink(label.text)
link.append(ContentText(label.text))
parent.append(link)
}
}
}
MarkdownElementTypes.SHORT_REFERENCE_LINK,
MarkdownElementTypes.FULL_REFERENCE_LINK -> {
val label = node.child(MarkdownElementTypes.LINK_LABEL)?.child(MarkdownTokenTypes.TEXT)
if (label != null) {
val link = linkResolver(label.text)
val linkText = node.child(MarkdownElementTypes.LINK_TEXT)?.child(MarkdownTokenTypes.TEXT)
link.append(ContentText(linkText?.text ?: label.text))
parent.append(link)
}
}
MarkdownTokenTypes.WHITE_SPACE,
MarkdownTokenTypes.EOL -> {
if (keepWhitespace(nodeStack.peek()) && node.parent?.children?.last() != node) {
parent.append(ContentText(node.text))
}
}
MarkdownTokenTypes.CODE -> {
val block = ContentBlockCode()
block.append(ContentText(node.text))
parent.append(block)
}
MarkdownTokenTypes.HTML_ENTITY -> {
parent.append(ContentEntity(node.text))
}
MarkdownTokenTypes.TEXT,
MarkdownTokenTypes.COLON,
MarkdownTokenTypes.DOUBLE_QUOTE,
MarkdownTokenTypes.LT,
MarkdownTokenTypes.GT,
MarkdownTokenTypes.LPAREN,
MarkdownTokenTypes.RPAREN,
MarkdownTokenTypes.LBRACKET,
MarkdownTokenTypes.RBRACKET -> {
parent.append(ContentText(node.text))
}
else -> {
processChildren()
}
}
}
}
private fun keepWhitespace(node: ContentNode) = node is ContentParagraph || node is ContentSection
public fun buildInlineContentTo(tree: MarkdownNode, target: ContentBlock, linkResolver: (String) -> ContentBlock) {
val inlineContent = tree.children.singleOrNull { it.type == MarkdownElementTypes.PARAGRAPH }?.children ?: listOf(tree)
inlineContent.forEach {
buildContentTo(it, target, linkResolver)
}
}
fun DocumentationBuilder.functionBody(descriptor: DeclarationDescriptor, functionName: String?): ContentNode {
if (functionName == null) {
logger.warn("Missing function name in @sample in ${descriptor.signature()}")
return ContentBlockCode().let() { it.append(ContentText("Missing function name in @sample")); it }
}
val scope = getResolutionScope(session, descriptor)
val rootPackage = session.getModuleDescriptor().getPackage(FqName.ROOT)!!
val rootScope = rootPackage.getMemberScope()
val symbol = resolveInScope(functionName, scope) ?: resolveInScope(functionName, rootScope)
if (symbol == null) {
logger.warn("Unresolved function $functionName in @sample in ${descriptor.signature()}")
return ContentBlockCode().let() { it.append(ContentText("Unresolved: $functionName")); it }
}
val psiElement = DescriptorToSourceUtils.descriptorToDeclaration(symbol)
if (psiElement == null) {
logger.warn("Can't find source for function $functionName in @sample in ${descriptor.signature()}")
return ContentBlockCode().let() { it.append(ContentText("Source not found: $functionName")); it }
}
val text = when (psiElement) {
is JetDeclarationWithBody -> ContentBlockCode().let() {
val bodyExpression = psiElement.getBodyExpression()
when (bodyExpression) {
is JetBlockExpression -> bodyExpression.getText().trim("{", "}")
else -> bodyExpression.getText()
}
}
else -> psiElement.getText()
}
val lines = text.trimTrailing().split("\n").filterNot { it.length() == 0 }
val indent = lines.map { it.takeWhile { it.isWhitespace() }.count() }.min() ?: 0
val finalText = lines.map { it.drop(indent) }.join("\n")
return ContentBlockCode("kotlin").let() { it.append(ContentText(finalText)); it }
}
private fun DocumentationBuilder.resolveInScope(functionName: String, scope: JetScope): DeclarationDescriptor? {
var currentScope = scope
val parts = functionName.split('.')
var symbol: DeclarationDescriptor? = null
for (part in parts) {
// short name
val symbolName = Name.guess(part)
val partSymbol = currentScope.getAllDescriptors().filter { it.getName() == symbolName }.firstOrNull()
if (partSymbol == null) {
symbol = null
break
}
currentScope = if (partSymbol is ClassDescriptor)
partSymbol.getDefaultType().getMemberScope()
else
getResolutionScope(session, partSymbol)
symbol = partSymbol
}
return symbol
}
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