Add antlr-based grammar and test it.

scripts/test_antlr_grammar.sh

@@ -0,0 +1,101 @@
+#!/usr/bin/env bash
+
+set -e
+
+ROOT_DIR="$(dirname "$0")"/..
+WORKDIR="${ROOT_DIR}/build/antlr"
+ANTLR_JAR="${ROOT_DIR}/build/deps/antlr4.jar"
+ANTLR_JAR_URI="https://www.antlr.org/download/antlr-4.7.2-complete.jar"
+GRAMMAR_FILE="$(readlink -f "${ROOT_DIR}/docs/Solidity.g4")"
+
+SGR_RESET="\033[0m"
+SGR_BOLD="\033[1m"
+SGR_GREEN="\033[32m"
+SGR_RED="\033[31m"
+SGR_BLUE="\033[34m"
+
+vt_cursor_up() { echo -ne "\033[A"; }
+vt_cursor_begin_of_line() { echo -ne "\r"; }
+
+download_antlr4()
+{
+  if [[ ! -e "$ANTLR_JAR" ]]
+  then
+    curl -o "${ANTLR_JAR}" "${ANTLR_JAR_URI}"
+  fi
+}
+
+prepare_workdir()
+{
+  mkdir -p "${ROOT_DIR}/build/deps"
+  mkdir -p "${WORKDIR}"
+  mkdir -p "${WORKDIR}/src"
+  mkdir -p "${WORKDIR}/target"
+}
+
+prepare_workdir
+download_antlr4
+
+if [[ ! -f "${WORKDIR}/target/SolidityParser.class" ]] || \
+    [ "${GRAMMAR_FILE}" -nt "${WORKDIR}/target/SolidityParser.class" ]
+then
+  echo "Creating parser"
+  # Create lexer/parser from grammar
+  java -jar "${ANTLR_JAR}" "${GRAMMAR_FILE}" -o "${WORKDIR}/src/"
+
+  # Compile lexer/parser sources
+  javac -classpath "${ANTLR_JAR}" "${WORKDIR}/src/"*.java -d "${WORKDIR}/target/"
+fi
+
+# Run tests
+failed_count=0
+test_file()
+{
+  local SOL_FILE
+  SOL_FILE="$(readlink -m "${1}")"
+  local cur=${2}
+  local max=${3}
+
+  echo -e "${SGR_BLUE}[${cur}/${max}] Testing ${SOL_FILE}${SGR_RESET} ..."
+  local output
+  output=$(
+    java \
+      -classpath "${ANTLR_JAR}:${WORKDIR}/target/" \
+      "org.antlr.v4.gui.TestRig" \
+      Solidity \
+      sourceUnit <"${SOL_FILE}" 2>&1
+  )
+  vt_cursor_up
+  vt_cursor_begin_of_line
+  if [[ "${output}" == "" ]]
+  then
+    echo -e "${SGR_BLUE}[${cur}/${max}] Testing ${SOL_FILE}${SGR_RESET} ${SGR_BOLD}${SGR_GREEN}OK${SGR_RESET}"
+  else
+    echo -e "${SGR_BLUE}[${cur}/${max}] Testing ${SOL_FILE}${SGR_RESET} ${SGR_BOLD}${SGR_RED}FAILED${SGR_RESET}"
+    echo "${output}"
+    failed_count=$((failed_count + 1))
+    exit 1
+  fi
+}
+
+# we only want to use files that do not contain errors or multi-source files.
+SOL_FILES=()
+while IFS='' read -r line
+do
+  SOL_FILES+=("$line")
+done < <(
+  grep -riL -E \
+    "^\/\/ (Syntax|Type|Parser|Declaration)Error|^==== Source:" \
+    "${ROOT_DIR}/test/libsolidity/syntaxTests" \
+    "${ROOT_DIR}/test/libsolidity/semanticTests" \
+)
+
+test_count=0
+for SOL_FILE in "${SOL_FILES[@]}"
+do
+  test_count=$((test_count + 1))
+  test_file "${SOL_FILE}" ${test_count} ${#SOL_FILES[*]}
+done
+
+echo "Summary: ${failed_count} of ${#SOL_FILES[*]} sources failed."
+exit ${failed_count}