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diff --git a/tiger-compiler/src/ast/tasks.cc b/tiger-compiler/src/ast/tasks.cc
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+++ b/tiger-compiler/src/ast/tasks.cc
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+/**
+ ** \file ast/tasks.cc
+ ** \brief Ast Tasks implementation.
+ */
+
+#include <ast/libast.hh>
+#include <misc/contract.hh>
+#define DEFINE_TASKS 1
+#include <ast/tasks.hh>
+#undef DEFINE_TASKS
+
+namespace ast::tasks
+{
+  // The abstract syntax tree.
+  std::unique_ptr<ast::ChunkList> the_program(nullptr);
+
+  void ast_display()
+  {
+    // `the_program' should have been set by the parse module by now.
+    precondition(the_program) << "Could not dump the AST, root is null";
+    std::cout << "/* == Abstract Syntax Tree. == */\n"
+              << *the_program << std::endl;
+  }
+
+  void ast_dump()
+  {
+    // `the_program' should have been set by the parse module by now.
+    precondition(the_program) << "Could not dump the AST, root is null";
+    ast::dump_dot(*the_program, std::cout);
+  }
+
+} // namespace ast::tasks