Setup SonarQube analysis in Travis CI (#2321)

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

.travis.yml

@@ -69,7 +69,21 @@ matrix:
             - gcc-5
             - gcc-5-multilib
       env: OPTS="--quiet --jerry-tests --jerry-test-suite --skip-list=parser-oom.js --buildoptions=--compile-flag=-fsanitize=undefined,--compile-flag=-m32,--compile-flag=-fno-omit-frame-pointer,--compile-flag=-fno-common,--debug,--jerry-libc=off,--static-link=off,--system-allocator=on,--linker-flag=-fuse-ld=gold" UBSAN_OPTIONS=print_stacktrace=1 TIMEOUT=600
-
+    - env: JOBNAME="SonarQube"
+      addons:
+        sonarcloud:
+          organization: "jerryscript-project"
+          token:
+            secure: "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"
+      script: # Travis-CI does not support SonarQube analysis for pull requests from external repositories (forks)
+        if [[ -n "${TRAVIS_PULL_REQUEST_SLUG}" && "${TRAVIS_PULL_REQUEST_SLUG}" == "${TRAVIS_REPO_SLUG}" ]];
+        then
+          build-wrapper-linux-x86-64 --out-dir bw-output ./tools/build.py;
+          sonar-scanner;
+        fi
+      cache:
+        directories:
+          - '${HOME}/.sonar/cache'
     - env: JOBNAME="ESP8266 Build Test"
       cache: ccache
       install: make -f ./targets/esp8266/Makefile.travis install