diff options
| -rw-r--r-- | .gitignore | 3 | ||||
| -rw-r--r-- | build.zig | 38 | ||||
| -rw-r--r-- | build.zig.zon | 67 | ||||
| -rw-r--r-- | examples/test1.gft | 1 | ||||
| -rw-r--r-- | src/main.zig | 64 | ||||
| -rw-r--r-- | src/tokenize.zig | 66 |
6 files changed, 239 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..9ae02d6 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +out/ +zig-out/ +zig-cache/ diff --git a/build.zig b/build.zig new file mode 100644 index 0000000..f04131f --- /dev/null +++ b/build.zig @@ -0,0 +1,38 @@ +const std = @import("std"); + +pub fn build(b: *std.Build) void { + const target = b.standardTargetOptions(.{}); + + const optimize = b.standardOptimizeOption(.{}); + + const exe = b.addExecutable(.{ + .name = "compiler", + .root_source_file = b.path("src/main.zig"), + .target = target, + .optimize = optimize, + }); + + b.installArtifact(exe); + + const run_cmd = b.addRunArtifact(exe); + + run_cmd.step.dependOn(b.getInstallStep()); + + if (b.args) |args| { + run_cmd.addArgs(args); + } + + const run_step = b.step("run", "Run the app"); + run_step.dependOn(&run_cmd.step); + + const exe_unit_tests = b.addTest(.{ + .root_source_file = b.path("src/main.zig"), + .target = target, + .optimize = optimize, + }); + + const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests); + + const test_step = b.step("test", "Run unit tests"); + test_step.dependOn(&run_exe_unit_tests.step); +} diff --git a/build.zig.zon b/build.zig.zon new file mode 100644 index 0000000..39f7607 --- /dev/null +++ b/build.zig.zon @@ -0,0 +1,67 @@ +.{ + .name = "compiler", + // This is a [Semantic Version](https://semver.org/). + // In a future version of Zig it will be used for package deduplication. + .version = "0.0.0", + + // This field is optional. + // This is currently advisory only; Zig does not yet do anything + // with this value. + //.minimum_zig_version = "0.11.0", + + // This field is optional. + // Each dependency must either provide a `url` and `hash`, or a `path`. + // `zig build --fetch` can be used to fetch all dependencies of a package, recursively. + // Once all dependencies are fetched, `zig build` no longer requires + // internet connectivity. + .dependencies = .{ + // See `zig fetch --save <url>` for a command-line interface for adding dependencies. + //.example = .{ + // // When updating this field to a new URL, be sure to delete the corresponding + // // `hash`, otherwise you are communicating that you expect to find the old hash at + // // the new URL. + // .url = "https://example.com/foo.tar.gz", + // + // // This is computed from the file contents of the directory of files that is + // // obtained after fetching `url` and applying the inclusion rules given by + // // `paths`. + // // + // // This field is the source of truth; packages do not come from a `url`; they + // // come from a `hash`. `url` is just one of many possible mirrors for how to + // // obtain a package matching this `hash`. + // // + // // Uses the [multihash](https://multiformats.io/multihash/) format. + // .hash = "...", + // + // // When this is provided, the package is found in a directory relative to the + // // build root. In this case the package's hash is irrelevant and therefore not + // // computed. This field and `url` are mutually exclusive. + // .path = "foo", + + // // When this is set to `true`, a package is declared to be lazily + // // fetched. This makes the dependency only get fetched if it is + // // actually used. + // .lazy = false, + //}, + }, + + // Specifies the set of files and directories that are included in this package. + // Only files and directories listed here are included in the `hash` that + // is computed for this package. + // Paths are relative to the build root. Use the empty string (`""`) to refer to + // the build root itself. + // A directory listed here means that all files within, recursively, are included. + .paths = .{ + // This makes *all* files, recursively, included in this package. It is generally + // better to explicitly list the files and directories instead, to insure that + // fetching from tarballs, file system paths, and version control all result + // in the same contents hash. + "", + // For example... + //"build.zig", + //"build.zig.zon", + //"src", + //"LICENSE", + //"README.md", + }, +} diff --git a/examples/test1.gft b/examples/test1.gft new file mode 100644 index 0000000..16f566f --- /dev/null +++ b/examples/test1.gft @@ -0,0 +1 @@ +return 69; 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); +} diff --git a/src/tokenize.zig b/src/tokenize.zig new file mode 100644 index 0000000..b5d5d23 --- /dev/null +++ b/src/tokenize.zig @@ -0,0 +1,66 @@ +const std = @import("std"); + +const TokenError = error{UnknownToken}; + +const Token = union(enum) { + ret: []const u8, + intLit: i32, + semiCol: u8, + nil: void, +}; + +pub const TokenIterator = struct { + tokens: []const Token, + index: usize = 0, + + pub fn next(self: *TokenIterator) ?Token { + defer self.*.index = self.*.index + 1; + if (self.*.index >= self.*.tokens.len) return null; + return self.*.tokens[self.*.index]; + } +}; + +pub fn tokenize(allocator: std.mem.Allocator, buff: []const u8) ![]const Token { + var toks = std.ArrayList(Token).init(allocator); + defer toks.deinit(); + var str = std.ArrayList(u8).init(allocator); + defer str.deinit(); + + var i: u32 = 0; + while (i < buff.len) { + switch (buff[i]) { + ' ', '\n', '\t' => { + i = i + 1; + continue; + }, + '0'...'9' => { + while (std.ascii.isDigit(buff[i])) { + try str.append(buff[i]); + i = i + 1; + } + const num: i32 = try std.fmt.parseInt(i32, str.items, 10); + try toks.append(.{ .intLit = num }); + str.deinit(); + str = std.ArrayList(u8).init(allocator); + }, + 'a'...'z', 'A'...'Z' => { + while (std.ascii.isAlphanumeric(buff[i])) { + try str.append(buff[i]); + i = i + 1; + } + try toks.append(.{ .ret = try str.toOwnedSlice() }); + str.deinit(); + str = std.ArrayList(u8).init(allocator); + }, + ';' => { + i = i + 1; + try toks.append(.{ .semiCol = ';' }); + }, + '+', '-', '*', '/' => { + // Process operator + }, + else => {}, + } + } + return toks.toOwnedSlice(); +} |