Bug 1451945 - Update to cssparser-macros 0.3.2. r?ted draft
authorMatt Brubeck <mbrubeck@mozilla.com>
Thu, 05 Apr 2018 15:54:03 -0700
changeset 778206 1d3049b3916a7d8a133f7eb34924cd8000925853
parent 778205 fd31866eca94b286e7fac9c614edcafe62039f95
push id105428
push userbmo:mbrubeck@mozilla.com
push dateThu, 05 Apr 2018 22:59:10 +0000
Bug 1451945 - Update to cssparser-macros 0.3.2. r?ted MozReview-Commit-ID: FvxUFdnoYS4
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -359,37 +359,38 @@ dependencies = [
  "cfg-if 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
 name = "cssparser"
 version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cssparser-macros 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cssparser-macros 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "dtoa-short 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "phf 0.7.21 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "procedural-masquerade 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.12.12 (registry+https://github.com/rust-lang/crates.io-index)",
 name = "cssparser-macros"
-version = "0.3.0"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "phf_codegen 0.7.21 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "procedural-masquerade 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.12.12 (registry+https://github.com/rust-lang/crates.io-index)",
 name = "cstr"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cstr-macros 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -747,17 +748,16 @@ dependencies = [
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "mp4parse_capi 0.10.0",
  "netwerk_helper 0.0.1",
  "nserror 0.1.0",
  "nsstring 0.1.0",
  "prefs_parser 0.0.1",
  "rsdparsa_capi 0.1.0",
  "rust_url_capi 0.0.1",
- "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "u2fhid 0.1.0",
  "webrender_bindings 0.1.0",
  "xpcom 0.1.0",
 name = "gl_generator"
 version = "0.8.0"
@@ -2266,17 +2266,17 @@ dependencies = [
 "checksum core-text 9.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2bd581c37283d0c23311d179aefbb891f2324ee0405da58a26e8594ab76e5748"
 "checksum cose 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "72fa26cb151d3ae4b70f63d67d0fed57ce04220feafafbae7f503bef7aae590d"
 "checksum cose-c 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "49726015ab0ca765144fcca61e4a7a543a16b795a777fa53f554da2fffff9a94"
 "checksum crc 1.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bd5d02c0aac6bd68393ed69e00bbc2457f3e89075c6349db7189618dc4ddc1d7"
 "checksum crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f739f8c5363aca78cfb059edf753d8f0d36908c348f3d8d1503f03d8b75d9cf3"
 "checksum crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "927121f5407de9956180ff5e936fe3cf4324279280001cd56b669d28ee7e9150"
 "checksum crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2760899e32a1d58d5abb31129f8fae5de75220bc2176e77ff7c627ae45c918d9"
 "checksum cssparser 0.23.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b906ac3f6108d8d0bfd4158469abe5909df1497116c8400346b5e08944579edd"
-"checksum cssparser-macros 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "079adec4af52bb5275eadd004292028c79eb3c5f5b4ee8086a36d4197032f6df"
+"checksum cssparser-macros 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9ce714f82ed2ca0e026ee351b7f25b2d70f81cf6f0f3214537a2edb67cd4d4d0"
 "checksum cstr 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b6557bdb1dc9647eae1cf7f5601b14cd45fc3c7ccf2df618387416fe542da6ea"
 "checksum cstr-macros 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f9f316203d1ea36f4f18316822806f6999aa3dc5ed1adf51e35b77e3b3933d78"
 "checksum cubeb 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8a3502aafa1bf95c524f65d2ba46d8741700c6a8a9543ea52c6da3d8b69a2896"
 "checksum cubeb-backend 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fdcac95519416d9ec814db2dc40e6293e7da25b906023d93f48b87f0587ab138"
 "checksum cubeb-core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "37f7b20f757a4e4b6aa28863236551bff77682dc6db192eba15af615492b5445"
 "checksum cubeb-sys 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "653b9e245d35dbe2a2da7c4586275cee75ff656ddeb02d4a73b4afdfa6d67502"
 "checksum darling 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d3effd06d4057f275cb7858889f4952920bab78dd8ff0f6e7dfe0c8d2e67ed89"
 "checksum darling_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "167dd3e235c2f1da16a635c282630452cdf49191eb05711de1bcd1d3d5068c00"
--- a/third_party/rust/cssparser-macros/.cargo-checksum.json
+++ b/third_party/rust/cssparser-macros/.cargo-checksum.json
@@ -1,1 +1,1 @@
\ No newline at end of file
\ No newline at end of file
--- a/third_party/rust/cssparser-macros/Cargo.toml
+++ b/third_party/rust/cssparser-macros/Cargo.toml
@@ -1,18 +1,39 @@
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g. crates.io) dependencies
+# If you believe there's an error in this file please file an
+# issue against the rust-lang/cargo repository. If you're
+# editing this file be aware that the upstream Cargo.toml
+# will likely look very different (and much more reasonable)
 name = "cssparser-macros"
-version = "0.3.0"
+version = "0.3.2"
 authors = ["Simon Sapin <simon.sapin@exyr.org>"]
 description = "Procedural macros for cssparser"
 documentation = "https://docs.rs/cssparser-macros/"
+license = "MPL-2.0"
 repository = "https://github.com/servo/rust-cssparser"
-license = "MPL-2.0"
 path = "lib.rs"
 proc-macro = true
+version = "0.7"
-procedural-masquerade = {path = "../procedural-masquerade", version = "0.1"}
-phf_codegen = "0.7"
-quote = "0.3.14"
-syn = {version = "0.11.8", features = ["full"]}
+version = "0.2"
+version = "0.1"
+version = "0.4"
+version = "0.12"
+features = ["full", "extra-traits"]
new file mode 100644
--- /dev/null
+++ b/third_party/rust/cssparser-macros/LICENSE
@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+1. Definitions
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+1.5. "Incompatible With Secondary Licenses"
+    means
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in 
+    a separate file or files, that is not Covered Software.
+1.8. "License"
+    means this document.
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+1.10. "Modifications"
+    means any of the following:
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+2. License Grants and Conditions
+2.1. Grants
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+2.2. Effective Date
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+2.3. Limitations on Grant Scope
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+2.4. Subsequent Licenses
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+2.5. Representation
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+2.6. Fair Use
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+2.7. Conditions
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+3. Responsibilities
+3.1. Distribution of Source Form
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+3.2. Distribution of Executable Form
+If You distribute Covered Software in Executable Form then:
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+3.3. Distribution of a Larger Work
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+3.4. Notices
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+3.5. Application of Additional Terms
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+4. Inability to Comply Due to Statute or Regulation
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+5. Termination
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+8. Litigation
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+9. Miscellaneous
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+10. Versions of the License
+10.1. New Versions
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+10.2. Effect of New Versions
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+10.3. Modified Versions
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+Exhibit A - Source Code Form License Notice
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+You may add additional accurate notices of copyright ownership.
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.
--- a/third_party/rust/cssparser-macros/lib.rs
+++ b/third_party/rust/cssparser-macros/lib.rs
@@ -1,70 +1,73 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #[macro_use] extern crate procedural_masquerade;
 extern crate phf_codegen;
 extern crate proc_macro;
+extern crate proc_macro2;
 #[macro_use] extern crate quote;
 extern crate syn;
-use std::ascii::AsciiExt;
+#[allow(unused_imports)] use std::ascii::AsciiExt;
+use quote::ToTokens;
+use proc_macro2::{TokenNode, TokenStream, TokenTree};
 define_proc_macros! {
     /// Input: the arms of a `match` expression.
     /// Output: a `MAX_LENGTH` constant with the length of the longest string pattern.
     /// Panic if the arms contain non-string patterns,
     /// or string patterns that contains ASCII uppercase letters.
     pub fn cssparser_internal__assert_ascii_lowercase__max_len(input: &str) -> String {
-        let expr = syn::parse_expr(&format!("match x {{ {} }}", input)).unwrap();
+        let expr = syn::parse_str(&format!("match x {{ {} }}", input)).unwrap();
         let arms = match expr {
-            syn::Expr { node: syn::ExprKind::Match(_, ref arms), .. } => arms,
+            syn::Expr::Match(syn::ExprMatch { ref arms, .. }) => arms,
             _ => panic!("expected a match expression, got {:?}", expr)
         max_len(arms.iter().flat_map(|arm| &arm.pats).filter_map(|pattern| {
             let expr = match *pattern {
                 syn::Pat::Lit(ref expr) => expr,
-                syn::Pat::Wild => return None,
+                syn::Pat::Wild(_) => return None,
                 _ => panic!("expected string or wildcard pattern, got {:?}", pattern)
-            match **expr {
-                syn::Expr { node: syn::ExprKind::Lit(syn::Lit::Str(ref string, _)), .. } => {
-                    assert_eq!(*string, string.to_ascii_lowercase(),
+            match *expr.expr {
+                syn::Expr::Lit(syn::ExprLit { lit: syn::Lit::Str(ref lit), .. }) => {
+                    assert_eq!(lit.value(), lit.value().to_ascii_lowercase(),
                                "string patterns must be given in ASCII lowercase");
-                    Some(string.len())
+                    Some(lit.value().len())
                 _ => panic!("expected string pattern, got {:?}", expr)
     /// Input: string literals with no separator
     /// Output: a `MAX_LENGTH` constant with the length of the longest string.
     pub fn cssparser_internal__max_len(input: &str) -> String {
-        max_len(syn::parse_token_trees(input).unwrap().iter().map(|tt| string_literal(tt).len()))
+        max_len(syn::parse_str::<TokenStream>(input).unwrap().into_iter().map(|tt| string_literal(&tt).len()))
     /// Input: parsed as token trees. The first TT is a type. (Can be wrapped in parens.)
     /// following TTs are grouped in pairs, each pair being a key as a string literal
     /// and the corresponding value as a const expression.
     /// Output: a rust-phf map, with keys ASCII-lowercased:
     /// ```text
     /// static MAP: &'static ::cssparser::phf::Map<&'static str, $ValueType> = …;
     /// ```
     pub fn cssparser_internal__phf_map(input: &str) -> String {
-        let token_trees = syn::parse_token_trees(input).unwrap();
+        let token_trees: Vec<TokenTree> = syn::parse_str::<TokenStream>(input).unwrap().into_iter().collect();
         let value_type = &token_trees[0];
         let pairs: Vec<_> = token_trees[1..].chunks(2).map(|chunk| {
             let key = string_literal(&chunk[0]);
             let value = &chunk[1];
             (key.to_ascii_lowercase(), quote!(#value).to_string())
         let mut map = phf_codegen::Map::new();
@@ -73,25 +76,23 @@ define_proc_macros! {
             map.entry(&**key, &**value);
         let mut tokens = quote! {
             static MAP: ::cssparser::_internal__phf::Map<&'static str, #value_type> =
         let mut initializer_bytes = Vec::new();
         map.build(&mut initializer_bytes).unwrap();
-        tokens.append(::std::str::from_utf8(&initializer_bytes).unwrap());
-        tokens.append(";");
-        tokens.into_string()
+        tokens.append_all(syn::parse_str::<syn::Expr>(::std::str::from_utf8(&initializer_bytes).unwrap()));
+        tokens.append_all(quote!(;));
+        tokens.to_string()
 fn max_len<I: Iterator<Item=usize>>(lengths: I) -> String {
     let max_length = lengths.max().expect("expected at least one string");
-    quote!( const MAX_LENGTH: usize = #max_length; ).into_string()
+    quote!( const MAX_LENGTH: usize = #max_length; ).to_string()
-fn string_literal(token: &syn::TokenTree) -> &str {
-    match *token {
-        syn::TokenTree::Token(syn::Token::Literal(syn::Lit::Str(ref string, _))) => string,
-        _ => panic!("expected string literal, got {:?}", token)
-    }
+fn string_literal(token: &TokenTree) -> String {
+    let lit: syn::LitStr = syn::parse2(token.clone().into()).expect(&format!("expected string literal, got {:?}", token));
+    lit.value()