Initial commit

1 files changed, 64 insertions, 0 deletions

diff --git a/src/main.zig b/src/main.zig
new file mode 100644
index 0000000..18239b1
--- /dev/null
+++ b/src/main.zig
@@ -0,0 +1,64 @@
+const std = @import("std");
+const tok = @import("tokenize.zig");
+
+const gftCompilerError = error{NoInputFile};
+
+pub fn main() !void {
+    if (std.os.argv.len != 2) return gftCompilerError.NoInputFile;
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+    var args = std.process.args();
+    _ = args.skip();
+    const inputFileName = args.next();
+    const inputFile = try std.fs.cwd().openFile(inputFileName.?, .{});
+    defer inputFile.close();
+
+    std.fs.cwd().makeDir("out") catch |err| {
+        if (err != error.PathAlreadyExists) return err;
+    };
+    const outfile = try std.fs.cwd().createFile("out/out.asm", .{});
+    const outWriter = outfile.writer();
+    defer outfile.close();
+
+    // Logic here to compile language
+    const all = try inputFile.readToEndAlloc(gpa.allocator(), 2048);
+    defer gpa.allocator().free(all);
+
+    const toks = try tok.tokenize(gpa.allocator(), all);
+    defer gpa.allocator().free(toks);
+    var tokIter = tok.TokenIterator{ .tokens = toks };
+    try outWriter.print("global _start:\n", .{});
+    while (tokIter.next()) |t| {
+        switch (t) {
+            .ret => {
+                const num = tokIter.next();
+                switch (num.?) {
+                    .intLit => {},
+                    else => break,
+                }
+                switch (tokIter.next().?) {
+                    .semiCol => {},
+                    else => break,
+                }
+                try outWriter.print(
+                    \\  mov rax, 60
+                    \\  mov rdi, {}
+                    \\  syscall
+                    \\
+                , .{num.?.intLit});
+                gpa.allocator().free(t.ret);
+            },
+            else => {},
+        }
+    }
+
+    const nasmargv = [_][]const u8{ "nasm", "-felf64", "out/out.asm" };
+    const nasmproc = try std.ChildProcess.run(.{ .argv = &nasmargv, .allocator = gpa.allocator() });
+    defer gpa.allocator().free(nasmproc.stdout);
+    defer gpa.allocator().free(nasmproc.stderr);
+
+    const ldargv = [_][]const u8{ "ld", "-o", "out/out", "out/out.o" };
+    const ldproc = try std.ChildProcess.run(.{ .argv = &ldargv, .allocator = gpa.allocator() });
+    defer gpa.allocator().free(ldproc.stdout);
+    defer gpa.allocator().free(ldproc.stderr);
+}