SwiftSyntax-Examples.swift

let returnStatement = SyntaxFactory.makeBlankReturnStmt()
    .withReturnKeyword(
        SyntaxFactory.makeReturnKeyword()
            .withLeadingTrivia([.carriageReturns(1), .tabs(1)])
            .withTrailingTrivia(.spaces(1))
    )
    .withExpression(SyntaxFactory.makeStringLiteralExpr("example"))


let functionBody = SyntaxFactory.makeBlankCodeBlock()
    .withLeftBrace(SyntaxFactory.makeLeftBraceToken())
    .withRightBrace(SyntaxFactory.makeRightBraceToken().withLeadingTrivia(.carriageReturns(1)))
    .withStatements(SyntaxFactory.makeCodeBlockItemList([
        SyntaxFactory.makeCodeBlockItem(item: returnStatement, semicolon: nil)
    ]))

let functionParameters = SyntaxFactory.makeBlankParameterClause()
.withLeftParen(SyntaxFactory.makeLeftParenToken())
.withRightParen(SyntaxFactory.makeRightParenToken().withTrailingTrivia(.spaces(1)))

let functionDeclaration = SyntaxFactory.makeBlankFunctionDecl()
    .withFuncKeyword(SyntaxFactory.makeFuncKeyword().withTrailingTrivia(.spaces(1)))
    .withIdentifier(SyntaxFactory.makeIdentifier("myFunctionName"))
    .withSignature(SyntaxFactory.makeFunctionSignature(input: functionParameters, throwsOrRethrowsKeyword: nil, output: nil))
    .withBody(functionBody)

let functionInvocation = SyntaxFactory.makeBlankFunctionCallExpr()
.withCalledExpression(SyntaxFactory.makeIdentifierExpr(identifier: SyntaxFactory.makeIdentifier("myFunctionName"),
                                                       declNameArguments: nil))
.withLeftParen(SyntaxFactory.makeLeftParenToken())
.withRightParen(SyntaxFactory.makeRightParenToken())

print("----------------")
print(functionDeclaration)
print("----------------")
print(functionInvocation)
print("----------------")

/*
----------------
func myFunctionName() {
	return "example"
}
----------------
myFunctionName()
----------------
*/