diff --git a/src/mac.rs b/src/mac.rs
index 46dc5dd..c4b16ba 100644
--- a/src/mac.rs
+++ b/src/mac.rs
@@ -1,11 +1,11 @@
 use super::*;
 use proc_macro2::TokenStream;
 #[cfg(feature = "parsing")]
-use proc_macro2::{Delimiter, TokenTree};
+use proc_macro2::{Delimiter, Span, TokenTree};
 use token::{Brace, Bracket, Paren};
 
 #[cfg(feature = "parsing")]
-use parse::{ParseStream, Result};
+use parse::{Parse, ParseStream, Parser, Result};
 #[cfg(feature = "extra-traits")]
 use std::hash::{Hash, Hasher};
 #[cfg(feature = "extra-traits")]
@@ -63,6 +63,114 @@
 }
 
 #[cfg(feature = "parsing")]
+fn delimiter_span(delimiter: &MacroDelimiter) -> Span {
+    match *delimiter {
+        MacroDelimiter::Paren(ref token) => token.span,
+        MacroDelimiter::Brace(ref token) => token.span,
+        MacroDelimiter::Bracket(ref token) => token.span,
+    }
+}
+
+impl Macro {
+    /// Parse the tokens within the macro invocation's delimiters into a syntax
+    /// tree.
+    ///
+    /// This is equivalent to `syn::parse2::<T>(mac.tts)` except that it
+    /// produces a more useful span when `tts` is empty.
+    ///
+    /// # Example
+    ///
+    /// ```edition2018
+    /// use syn::{parse_quote, Expr, ExprLit, Ident, Lit, LitStr, Macro, Token};
+    /// use syn::ext::IdentExt;
+    /// use syn::parse::{Error, Parse, ParseStream, Result};
+    /// use syn::punctuated::Punctuated;
+    ///
+    /// // The arguments expected by libcore's format_args macro, and as a
+    /// // result most other formatting and printing macros like println.
+    /// //
+    /// //     println!("{} is {number:.prec$}", "x", prec=5, number=0.01)
+    /// struct FormatArgs {
+    ///     format_string: Expr,
+    ///     positional_args: Vec<Expr>,
+    ///     named_args: Vec<(Ident, Expr)>,
+    /// }
+    ///
+    /// impl Parse for FormatArgs {
+    ///     fn parse(input: ParseStream) -> Result<Self> {
+    ///         let format_string: Expr;
+    ///         let mut positional_args = Vec::new();
+    ///         let mut named_args = Vec::new();
+    ///
+    ///         format_string = input.parse()?;
+    ///         while !input.is_empty() {
+    ///             input.parse::<Token![,]>()?;
+    ///             if input.is_empty() {
+    ///                 break;
+    ///             }
+    ///             if input.peek(Ident::peek_any) && input.peek2(Token![=]) {
+    ///                 while !input.is_empty() {
+    ///                     let name: Ident = input.call(Ident::parse_any)?;
+    ///                     input.parse::<Token![=]>()?;
+    ///                     let value: Expr = input.parse()?;
+    ///                     named_args.push((name, value));
+    ///                     if input.is_empty() {
+    ///                         break;
+    ///                     }
+    ///                     input.parse::<Token![,]>()?;
+    ///                 }
+    ///                 break;
+    ///             }
+    ///             positional_args.push(input.parse()?);
+    ///         }
+    ///
+    ///         Ok(FormatArgs {
+    ///             format_string,
+    ///             positional_args,
+    ///             named_args,
+    ///         })
+    ///     }
+    /// }
+    ///
+    /// // Extract the first argument, the format string literal, from an
+    /// // invocation of a formatting or printing macro.
+    /// fn get_format_string(m: &Macro) -> Result<LitStr> {
+    ///     let args: FormatArgs = m.parse_body()?;
+    ///     match args.format_string {
+    ///         Expr::Lit(ExprLit { lit: Lit::Str(lit), .. }) => Ok(lit),
+    ///         other => {
+    ///             // First argument was not a string literal expression.
+    ///             // Maybe something like: println!(concat!(...), ...)
+    ///             Err(Error::new_spanned(other, "format string must be a string literal"))
+    ///         }
+    ///     }
+    /// }
+    ///
+    /// fn main() {
+    ///     let invocation = parse_quote! {
+    ///         println!("{:?}", Instant::now())
+    ///     };
+    ///     let lit = get_format_string(&invocation).unwrap();
+    ///     assert_eq!(lit.value(), "{:?}");
+    /// }
+    /// ```
+    #[cfg(feature = "parsing")]
+    pub fn parse_body<T: Parse>(&self) -> Result<T> {
+        self.parse_body_with(T::parse)
+    }
+
+    /// Parse the tokens within the macro invocation's delimiters using the
+    /// given parser.
+    #[cfg(feature = "parsing")]
+    pub fn parse_body_with<F: Parser>(&self, parser: F) -> Result<F::Output> {
+        // TODO: see if we can get a group.span_close() span in here as the
+        // scope, rather than the span of the whole group.
+        let scope = delimiter_span(&self.delimiter);
+        private::parse_scoped(parser, scope, self.tts.clone())
+    }
+}
+
+#[cfg(feature = "parsing")]
 pub fn parse_delimiter(input: ParseStream) -> Result<(MacroDelimiter, TokenStream)> {
     input.step(|cursor| {
         if let Some((TokenTree::Group(g), rest)) = cursor.token_tree() {
diff --git a/src/parse.rs b/src/parse.rs
index f8f3ff6..67dd259 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -1091,6 +1091,13 @@
     fn parse_str(self, s: &str) -> Result<Self::Output> {
         self.parse2(proc_macro2::TokenStream::from_str(s)?)
     }
+
+    // Not public API.
+    #[doc(hidden)]
+    fn __parse_scoped(self, scope: Span, tokens: TokenStream) -> Result<Self::Output> {
+        let _ = scope;
+        self.parse2(tokens)
+    }
 }
 
 fn tokens_to_parse_buffer(tokens: &TokenBuffer) -> ParseBuffer {
@@ -1117,4 +1124,25 @@
             Err(state.error("unexpected token"))
         }
     }
+
+    #[doc(hidden)]
+    fn __parse_scoped(self, scope: Span, tokens: TokenStream) -> Result<Self::Output> {
+        let buf = TokenBuffer::new2(tokens);
+        let cursor = buf.begin();
+        let unexpected = Rc::new(Cell::new(None));
+        let state = private::new_parse_buffer(scope, cursor, unexpected);
+        let node = self(&state)?;
+        state.check_unexpected()?;
+        if state.is_empty() {
+            Ok(node)
+        } else {
+            Err(state.error("unexpected token"))
+        }
+    }
+}
+
+impl private {
+    pub fn parse_scoped<F: Parser>(f: F, scope: Span, tokens: TokenStream) -> Result<F::Output> {
+        f.__parse_scoped(scope, tokens)
+    }
 }