[Macros] Add a default implementation of MacroExpansionContext.lexicalContext.

hborla · hborla · commit a5274f2d098d · 2024-02-20T18:39:57.000-08:00
diff --git a/Sources/SwiftSyntaxMacros/MacroExpansionContext.swift b/Sources/SwiftSyntaxMacros/MacroExpansionContext.swift
@@ -81,6 +81,12 @@ extension MacroExpansionContext {
   ) -> AbstractSourceLocation? {
     return location(of: node, at: .afterLeadingTrivia, filePathMode: .fileID)
   }
+
+  public var lexicalContext: [Syntax] {
+    fatalError(
+      "`MacroExpansionContext` conformance must implement `lexicalContext`"
+    )
+  }
 }
 
 /// Diagnostic message used for thrown errors.

Original file line number	Diff line number	Diff line change
`@@ -81,6 +81,12 @@ extension MacroExpansionContext {`
`81`	`81`	`) -> AbstractSourceLocation? {`
`82`	`82`	`return location(of: node, at: .afterLeadingTrivia, filePathMode: .fileID)`
`83`	`83`	`}`
	`84`	`+`
	`85`	`+ public var lexicalContext: [Syntax] {`
	`86`	`+ fatalError(`
	`87`	+ "`MacroExpansionContext` conformance must implement `lexicalContext`"
	`88`	`+ )`
	`89`	`+ }`
`84`	`90`	`}`
`85`	`91`
`86`	`92`	`/// Diagnostic message used for thrown errors.`