Merge pull request scala#12197 from philwalk/refactored-scalac-startup-latency

avoid duplicate call to dist/bin/common via refactored scalac

Author: liufengyun

compiler/test-resources/repl/defaultClassloader

@@ -1,3 +1,2 @@
-scala> val d: java.sql.Date = new java.sql.Date(100L)
-val d: java.sql.Date = 1970-01-01
-
+scala> val d: Long = (new java.sql.Date(100L)).getTime
+val d: Long = 100

compiler/test/dotty/tools/scripting/ClasspathTests.scala

@@ -18,6 +18,7 @@ class ClasspathTests:
   val packBinDir = "dist/target/pack/bin"
   val scalaCopy = makeTestableScriptCopy("scala")
   val scalacCopy = makeTestableScriptCopy("scalac")
+  val commonCopy = makeTestableScriptCopy("common")
 
   // only interested in classpath test scripts
   def testFiles = scripts("/scripting").filter { _.getName.matches("classpath.*[.]sc") }
@@ -38,7 +39,8 @@ class ClasspathTests:
     if Files.exists(scriptPath) then
       val lines = Files.readAllLines(scriptPath).asScala.map {
         _.replaceAll("/scalac", "/scalac-copy").
-        replaceFirst("^eval(.*JAVACMD.*)", "echo $1")
+        replaceAll("/common", "/common-copy").
+        replaceFirst("^ *eval(.*JAVACMD.*)", "echo $1")
       }
       val bytes = (lines.mkString("\n")+"\n").getBytes
       Files.write(scriptCopy, bytes)

dist/bin/common

@@ -54,15 +54,15 @@ case "`uname`" in
 esac
 
 unset CYGPATHCMD
-if [[ $cygwin || $mingw || $msys ]]; then
+if [[ ${cygwin-} || ${mingw-} || ${msys-} ]]; then
   # ConEmu terminal is incompatible with jna-5.*.jar
-  [[ ($CONEMUANSI || $ConEmuANSI) ]] && conemu=true
+  [[ (${CONEMUANSI-} || ${ConEmuANSI-}) ]] && conemu=true
   # cygpath is used by various windows shells: cygwin, git-sdk, gitbash, msys, etc.
   CYGPATHCMD=`which cygpath 2>/dev/null`
   case "$TERM" in
     rxvt* | xterm* | cygwin*)
       stty -icanon min 1 -echo
-      SCALA_OPTS="$SCALA_OPTS -Djline.terminal=unix"
+      JAVA_OPTS="$JAVA_OPTS -Djline.terminal=unix"
     ;;
   esac
 fi
@@ -111,14 +111,14 @@ CLASSPATH_SUFFIX=""
 PSEP=":"
 
 # translate paths to Windows-mixed format before running java
-if [ -n "$CYGPATHCMD" ]; then
-  [ -n "$PROG_HOME" ] &&
+if [ -n "${CYGPATHCMD-}" ]; then
+  [ -n "${PROG_HOME-}" ] &&
     PROG_HOME=`"$CYGPATHCMD" -am "$PROG_HOME"`
   [ -n "$JAVA_HOME" ] &&
     JAVA_HOME=`"$CYGPATHCMD" -am "$JAVA_HOME"`
   CLASSPATH_SUFFIX=";"
   PSEP=";"
-elif [[ $mingw || $msys ]]; then
+elif [[ ${mingw-} || ${msys-} ]]; then
   # For Mingw / Msys, convert paths from UNIX format before anything is touched
   [ -n "$PROG_HOME" ] &&
     PROG_HOME="`(cd "$PROG_HOME"; pwd -W | sed 's|/|\\\\|g')`"
@@ -155,8 +155,66 @@ SBT_INTF=$(find_lib "*compiler-interface*")
 JLINE_READER=$(find_lib "*jline-reader-3*")
 JLINE_TERMINAL=$(find_lib "*jline-terminal-3*")
 JLINE_TERMINAL_JNA=$(find_lib "*jline-terminal-jna-3*")
-[[ $conemu ]] || JNA=$(find_lib "*jna-5*")
+[[ ${conemu-} ]] || JNA=$(find_lib "*jna-5*")
 
 # debug
 
 DEBUG_STR=-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address=5005
+
+classpathArgs () {
+  # echo "dotty-compiler: $DOTTY_COMP"
+  # echo "dotty-interface: $DOTTY_INTF"
+  # echo "dotty-library: $DOTTY_LIB"
+  # echo "tasty-core: $TASTY_CORE"
+  # echo "scala-asm: $SCALA_ASM"
+  # echo "scala-lib: $SCALA_LIB"
+  # echo "sbt-intface: $SBT_INTF"
+
+  toolchain=""
+  toolchain+="$SCALA_LIB$PSEP"
+  toolchain+="$DOTTY_LIB$PSEP"
+  toolchain+="$SCALA_ASM$PSEP"
+  toolchain+="$SBT_INTF$PSEP"
+  toolchain+="$DOTTY_INTF$PSEP"
+  toolchain+="$DOTTY_COMP$PSEP"
+  toolchain+="$TASTY_CORE$PSEP"
+  toolchain+="$DOTTY_STAGING$PSEP"
+  toolchain+="$DOTTY_TASTY_INSPECTOR$PSEP"
+
+  # jine
+  toolchain+="$JLINE_READER$PSEP"
+  toolchain+="$JLINE_TERMINAL$PSEP"
+  toolchain+="$JLINE_TERMINAL_JNA$PSEP"
+  [ -n "${JNA-}" ] && toolchain+="$JNA$PSEP"
+
+  if [ -n "${jvm_cp_args-}" ]; then
+    jvm_cp_args="$toolchain$jvm_cp_args"
+  else
+    jvm_cp_args="$toolchain$PSEP"
+  fi
+}
+
+default_java_opts="-Xmx768m -Xms768m"
+
+CompilerMain=dotty.tools.dotc.Main
+DecompilerMain=dotty.tools.dotc.decompiler.Main
+ReplMain=dotty.tools.repl.Main
+ScriptingMain=dotty.tools.scripting.Main
+
+declare -a java_args
+declare -a scala_args
+declare -a residual_args
+declare -a script_args
+
+addJava () {
+  java_args+=("'$1'")
+}
+addScala () {
+  scala_args+=("'$1'")
+}
+addResidual () {
+  residual_args+=("'$1'")
+}
+addScript () {
+  script_args+=("'$1'")
+}