Meta: initial commit of WestCo optimized toolchain.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/CompilerDriver/cc2/source/cppfront.cpp b/CompilerDriver/cc2/source/cppfront.cpp
new file mode 100644
index 0000000..989a6ad
--- /dev/null
+++ b/CompilerDriver/cc2/source/cppfront.cpp
@@ -0,0 +1,115 @@
+
+//  Copyright (c) Herb Sutter
+//  SPDX-License-Identifier: CC-BY-NC-ND-4.0
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+//===========================================================================
+//  main - driver
+//===========================================================================
+
+#include "to_cpp1.h"
+
+static auto flag_debug_output = false;
+static cpp2::cmdline_processor::register_flag cmd_debug(
+    9,
+    "debug",
+    "Emit compiler debug output",
+    []{ flag_debug_output = true; }
+);
+
+auto main(
+    int   argc,
+    char* argv[]
+)
+    -> int
+{
+    using namespace cpp2;
+
+    cmdline.set_args(argc, argv);
+    cmdline.process_flags();
+
+    if (cmdline.help_was_requested()) {
+        return EXIT_SUCCESS;
+    }
+
+    if (cmdline.arguments().empty()) {
+        std::cerr << "cppfront: error: no input files (try -help)\n";
+        return EXIT_FAILURE;
+    }
+
+    //  For each Cpp2 source file
+    int exit_status = EXIT_SUCCESS;
+    for (auto const& arg : cmdline.arguments())
+    {
+        auto& out = flag_cpp1_filename != "stdout" ? std::cout : std::cerr;
+
+        out << arg.text << "...";
+
+        //  Load + lex + parse + sema
+        cppfront c(arg.text);
+
+        //  Generate Cpp1 (this may catch additional late errors)
+        auto count = c.lower_to_cpp1();
+
+        //  If there were no errors, say so and generate Cpp1
+        if (c.had_no_errors())
+        {
+            if (!c.has_cpp1()) {
+                out << " ok (all Cpp2, passes safety checks)\n";
+            }
+            else if (c.has_cpp2()) {
+                out << " ok (mixed Cpp1/Cpp2, Cpp2 code passes safety checks)\n";
+            }
+            else {
+                out << " ok (all Cpp1)\n";
+            }
+
+            if (flag_verbose) {
+                out << "   Cpp1: " << count.cpp1_lines << " line" << (count.cpp1_lines != 1 ? "s" : "");
+                out << "\n   Cpp2: " << count.cpp2_lines << " line" << (count.cpp2_lines != 1 ? "s" : "");
+                auto total = count.cpp1_lines + count.cpp2_lines;
+                if (total > 0) {
+                    out << " (";
+                    if (count.cpp2_lines / count.cpp1_lines > 25) {
+                        out << std::setprecision(3)
+                            << 100.0 * count.cpp2_lines / total;
+                    }
+                    else {
+                        out << 100 * count.cpp2_lines / total;
+                    }
+                    out << "%)";
+                }
+            }
+
+            out << "\n";
+        }
+        //  Otherwise, print the errors
+        else
+        {
+            std::cerr << "\n";
+            c.print_errors();
+            std::cerr << "\n";
+            exit_status = EXIT_FAILURE;
+        }
+
+        //  And, if requested, the debug information
+        if (flag_debug_output) {
+            c.debug_print();
+        }
+    }
+
+    if (flag_internal_debug) {
+        stackinstr::print_deepest();
+        stackinstr::print_largest();
+    }
+
+    return exit_status;
+}