Add a macro lookup function

DougGregor · DougGregor · commit b61c0e974a0b · 2022-10-23T22:03:20.000-07:00
diff --git a/Sources/_SwiftSyntaxMacros/MacroSystem.swift b/Sources/_SwiftSyntaxMacros/MacroSystem.swift
@@ -52,6 +52,11 @@ public struct MacroSystem {
 
     macros[macro.name] = macro
   }
+
+  /// Look for a macro with the given name.
+  public func lookup(_ macroName: String) -> Macro.Type? {
+    return macros[macroName]
+  }
 }
 
 /// Syntax rewriter that evaluates any macros encountered along the way.

Original file line number	Diff line number	Diff line change
`@@ -52,6 +52,11 @@ public struct MacroSystem {`
`52`	`52`
`53`	`53`	`macros[macro.name] = macro`
`54`	`54`	`}`
	`55`	`+`
	`56`	`+ /// Look for a macro with the given name.`
	`57`	`+ public func lookup(_ macroName: String) -> Macro.Type? {`
	`58`	`+ return macros[macroName]`
	`59`	`+ }`
`55`	`60`	`}`
`56`	`61`
`57`	`62`	`/// Syntax rewriter that evaluates any macros encountered along the way.`