Add rustfmt make command and CI configure

.circleci/config.yml

@@ -18,6 +18,8 @@ jobs:
             - v4-test-cargo-cache-linux-{{ arch }}-{{ checksum "Cargo.lock" }}
       - run: sudo apt-get install -y cmake
       - run: make test
+      - run: rustup component add rustfmt
+      - run: make lint
       - save_cache:
           paths:
             - /usr/local/cargo/registry
@@ -45,6 +47,10 @@ jobs:
       - run:
           name: Execute tests
           command: make test
+      - run: rustup component add rustfmt
+      - run:
+          name: Execute lints
+          command: make lint
       - run:
           name: Make release build
           command: |
@@ -97,12 +103,14 @@ jobs:
             curl https://sh.rustup.rs -sSf | sh -s -- -y
             export PATH="$HOME/.cargo/bin:$PATH"
             cargo --version
+            rustup component add rustfmt
       - run:
           name: Execute tests
           command: |
             export PATH="`pwd`/cmake-3.4.1-Darwin-x86_64/CMake.app/Contents/bin:$PATH"
             export PATH="$HOME/.cargo/bin:$PATH"
             make test
+            make lint
       - run:
           name: Make release build
           command: |

Makefile

@@ -3,7 +3,7 @@ ifeq (test, $(firstword $(MAKECMDGOALS)))
   $(eval $(runargs):;@true)
 endif
 
-.PHONY: spectests emtests clean build install
+.PHONY: spectests emtests clean build install lint precommit
 
 # This will re-generate the Rust test files based on spectests/*.wast
 spectests:
@@ -21,6 +21,11 @@ build:
 install:
 	cargo install --path .
 
+lint:
+	cargo fmt -- --check
+
+precommit: lint test
+
 test:
 	# We use one thread so the emscripten stdouts doesn't collide
 	cargo test -- --test-threads=1 $(runargs)