feat(tdl): Add support to generate an ANTLR parser from the TaskDefLang's grammar.

.github/workflows/tdl-generated-code-checks.yaml

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+name: "tdl-generated-code-checks"
+
+on:
+  pull_request:
+  push:
+  schedule:
+    # Run daily at 00:15 UTC (the 15 is to avoid periods of high load)
+    - cron: "15 0 * * *"
+  workflow_dispatch:
+
+concurrency:
+  group: "${{github.workflow}}-${{github.ref}}"
+  # Cancel in-progress jobs for efficiency
+  cancel-in-progress: true
+
+jobs:
+  antlr-code-committed:
+    name: "antlr-code-committed"
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: "actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683"
+        with:
+          submodules: "recursive"
+
+      - name: "Set up Java"
+        uses: "actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00"
+        with:
+          distribution: "temurin"
+          java-version: "11"
+
+      - name: "Install task"
+        shell: "bash"
+        run: "npm install -g @go-task/cli"
+
+      - name: "Generate parsers"
+        shell: "bash"
+        run: "task build:tdl-generate-parsers"
+
+      - name: "Check if the generated parsers are the latest"
+        shell: "bash"
+        run:
+          |
+          git status --porcelain \
+            src/spider/tdl/parser/antlr_generated \
+            | grep . > /dev/null \
+              && exit 1 \
+              || exit 0

src/spider/tdl/parser/TaskDefLang.g4

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+grammar TaskDefLang;
+
+start: EOF ;
+
+SPACE:  [ \t\r\n] -> skip ;

src/spider/tdl/parser/antlr_generated/TaskDefLangBaseVisitor.cpp

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+
+// Generated from tdl/parser/TaskDefLang.g4 by ANTLR 4.13.2
+
+
+#include "TaskDefLangBaseVisitor.h"
+
+
+using namespace spider::tdl::parser::antlr_generated;
+

src/spider/tdl/parser/antlr_generated/TaskDefLangBaseVisitor.h

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+
+// Generated from tdl/parser/TaskDefLang.g4 by ANTLR 4.13.2
+
+#pragma once
+
+
+#include "antlr4-runtime.h"
+#include "TaskDefLangVisitor.h"
+
+
+namespace spider::tdl::parser::antlr_generated {
+
+/**
+ * This class provides an empty implementation of TaskDefLangVisitor, which can be
+ * extended to create a visitor which only needs to handle a subset of the available methods.
+ */
+class  TaskDefLangBaseVisitor : public TaskDefLangVisitor {
+public:
+
+  virtual std::any visitStart(TaskDefLangParser::StartContext *ctx) override {
+    return visitChildren(ctx);
+  }
+
+
+};
+
+}  // namespace spider::tdl::parser::antlr_generated

src/spider/tdl/parser/antlr_generated/TaskDefLangLexer.cpp

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+
+// Generated from tdl/parser/TaskDefLang.g4 by ANTLR 4.13.2
+
+
+#include "TaskDefLangLexer.h"
+
+
+using namespace antlr4;
+
+using namespace spider::tdl::parser::antlr_generated;
+
+
+using namespace antlr4;
+
+namespace {
+
+struct TaskDefLangLexerStaticData final {
+  TaskDefLangLexerStaticData(std::vector<std::string> ruleNames,
+                          std::vector<std::string> channelNames,
+                          std::vector<std::string> modeNames,
+                          std::vector<std::string> literalNames,
+                          std::vector<std::string> symbolicNames)
+      : ruleNames(std::move(ruleNames)), channelNames(std::move(channelNames)),
+        modeNames(std::move(modeNames)), literalNames(std::move(literalNames)),
+        symbolicNames(std::move(symbolicNames)),
+        vocabulary(this->literalNames, this->symbolicNames) {}
+
+  TaskDefLangLexerStaticData(const TaskDefLangLexerStaticData&) = delete;
+  TaskDefLangLexerStaticData(TaskDefLangLexerStaticData&&) = delete;
+  TaskDefLangLexerStaticData& operator=(const TaskDefLangLexerStaticData&) = delete;
+  TaskDefLangLexerStaticData& operator=(TaskDefLangLexerStaticData&&) = delete;
+
+  std::vector<antlr4::dfa::DFA> decisionToDFA;
+  antlr4::atn::PredictionContextCache sharedContextCache;
+  const std::vector<std::string> ruleNames;
+  const std::vector<std::string> channelNames;
+  const std::vector<std::string> modeNames;
+  const std::vector<std::string> literalNames;
+  const std::vector<std::string> symbolicNames;
+  const antlr4::dfa::Vocabulary vocabulary;
+  antlr4::atn::SerializedATNView serializedATN;
+  std::unique_ptr<antlr4::atn::ATN> atn;
+};
+
+::antlr4::internal::OnceFlag taskdeflanglexerLexerOnceFlag;
+#if ANTLR4_USE_THREAD_LOCAL_CACHE
+static thread_local
+#endif
+std::unique_ptr<TaskDefLangLexerStaticData> taskdeflanglexerLexerStaticData = nullptr;
+
+void taskdeflanglexerLexerInitialize() {
+#if ANTLR4_USE_THREAD_LOCAL_CACHE
+  if (taskdeflanglexerLexerStaticData != nullptr) {
+    return;
+  }
+#else
+  assert(taskdeflanglexerLexerStaticData == nullptr);
+#endif
+  auto staticData = std::make_unique<TaskDefLangLexerStaticData>(
+    std::vector<std::string>{
+      "SPACE"
+    },
+    std::vector<std::string>{
+      "DEFAULT_TOKEN_CHANNEL", "HIDDEN"
+    },
+    std::vector<std::string>{
+      "DEFAULT_MODE"
+    },
+    std::vector<std::string>{
+    },
+    std::vector<std::string>{
+      "", "SPACE"
+    }
+  );
+  static const int32_t serializedATNSegment[] = {
+  	4,0,1,7,6,-1,2,0,7,0,1,0,1,0,1,0,1,0,0,0,1,1,1,1,0,1,3,0,9,10,13,13,32,
+  	32,6,0,1,1,0,0,0,1,3,1,0,0,0,3,4,7,0,0,0,4,5,1,0,0,0,5,6,6,0,0,0,6,2,
+  	1,0,0,0,1,0,1,6,0,0
+  };
+  staticData->serializedATN = antlr4::atn::SerializedATNView(serializedATNSegment, sizeof(serializedATNSegment) / sizeof(serializedATNSegment[0]));
+
+  antlr4::atn::ATNDeserializer deserializer;
+  staticData->atn = deserializer.deserialize(staticData->serializedATN);
+
+  const size_t count = staticData->atn->getNumberOfDecisions();
+  staticData->decisionToDFA.reserve(count);
+  for (size_t i = 0; i < count; i++) { 
+    staticData->decisionToDFA.emplace_back(staticData->atn->getDecisionState(i), i);
+  }
+  taskdeflanglexerLexerStaticData = std::move(staticData);
+}
+
+}
+
+TaskDefLangLexer::TaskDefLangLexer(CharStream *input) : Lexer(input) {
+  TaskDefLangLexer::initialize();
+  _interpreter = new atn::LexerATNSimulator(this, *taskdeflanglexerLexerStaticData->atn, taskdeflanglexerLexerStaticData->decisionToDFA, taskdeflanglexerLexerStaticData->sharedContextCache);
+}
+
+TaskDefLangLexer::~TaskDefLangLexer() {
+  delete _interpreter;
+}
+
+std::string TaskDefLangLexer::getGrammarFileName() const {
+  return "TaskDefLang.g4";
+}
+
+const std::vector<std::string>& TaskDefLangLexer::getRuleNames() const {
+  return taskdeflanglexerLexerStaticData->ruleNames;
+}
+
+const std::vector<std::string>& TaskDefLangLexer::getChannelNames() const {
+  return taskdeflanglexerLexerStaticData->channelNames;
+}
+
+const std::vector<std::string>& TaskDefLangLexer::getModeNames() const {
+  return taskdeflanglexerLexerStaticData->modeNames;
+}
+
+const dfa::Vocabulary& TaskDefLangLexer::getVocabulary() const {
+  return taskdeflanglexerLexerStaticData->vocabulary;
+}
+
+antlr4::atn::SerializedATNView TaskDefLangLexer::getSerializedATN() const {
+  return taskdeflanglexerLexerStaticData->serializedATN;
+}
+
+const atn::ATN& TaskDefLangLexer::getATN() const {
+  return *taskdeflanglexerLexerStaticData->atn;
+}
+
+
+
+
+void TaskDefLangLexer::initialize() {
+#if ANTLR4_USE_THREAD_LOCAL_CACHE
+  taskdeflanglexerLexerInitialize();
+#else
+  ::antlr4::internal::call_once(taskdeflanglexerLexerOnceFlag, taskdeflanglexerLexerInitialize);
+#endif
+}

src/spider/tdl/parser/antlr_generated/TaskDefLangLexer.h

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+
+// Generated from tdl/parser/TaskDefLang.g4 by ANTLR 4.13.2
+
+#pragma once
+
+
+#include "antlr4-runtime.h"
+
+
+namespace spider::tdl::parser::antlr_generated {
+
+
+class  TaskDefLangLexer : public antlr4::Lexer {
+public:
+  enum {
+    SPACE = 1
+  };
+
+  explicit TaskDefLangLexer(antlr4::CharStream *input);
+
+  ~TaskDefLangLexer() override;
+
+
+  std::string getGrammarFileName() const override;
+
+  const std::vector<std::string>& getRuleNames() const override;
+
+  const std::vector<std::string>& getChannelNames() const override;
+
+  const std::vector<std::string>& getModeNames() const override;
+
+  const antlr4::dfa::Vocabulary& getVocabulary() const override;
+
+  antlr4::atn::SerializedATNView getSerializedATN() const override;
+
+  const antlr4::atn::ATN& getATN() const override;
+
+  // By default the static state used to implement the lexer is lazily initialized during the first
+  // call to the constructor. You can call this function if you wish to initialize the static state
+  // ahead of time.
+  static void initialize();
+
+private:
+
+  // Individual action functions triggered by action() above.
+
+  // Individual semantic predicate functions triggered by sempred() above.
+
+};
+
+}  // namespace spider::tdl::parser::antlr_generated