Start implementing ZIG

.editorconfig

@@ -9,3 +9,5 @@ insert_final_newline = true
 indent_size = 2
 [*.md]
 indent_size = 2
+[*.zig]
+indent_size = 4

.yarnrc.yml

@@ -1,4 +1,5 @@
 nodeLinker: node-modules
+npmRegistryServer: https://npm.hibas123.de
 
 plugins:
   - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs

examples/Zig/.gitignore

@@ -0,0 +1,2 @@
+zig-cache/
+generated/

examples/Zig/build.zig

@@ -0,0 +1,34 @@
+const std = @import("std");
+
+pub fn build(b: *std.build.Builder) void {
+    // Standard target options allows the person running `zig build` to choose
+    // what target to build for. Here we do not override the defaults, which
+    // means any target is allowed, and the default is native. Other options
+    // for restricting supported target set are available.
+    const target = b.standardTargetOptions(.{});
+
+    // Standard release options allow the person running `zig build` to select
+    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
+    const mode = b.standardReleaseOptions();
+
+    const exe = b.addExecutable("ZigTests", "src/main.zig");
+    exe.setTarget(target);
+    exe.setBuildMode(mode);
+    exe.install();
+
+    const run_cmd = exe.run();
+    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_tests = b.addTest("src/main.zig");
+    exe_tests.setTarget(target);
+    exe_tests.setBuildMode(mode);
+
+    const test_step = b.step("test", "Run unit tests");
+    test_step.dependOn(&exe_tests.step);
+}

examples/Zig/src/main.zig

@@ -0,0 +1,20 @@
+const std = @import("std");
+const t = @import("./generated/mod.zig");
+
+var mygpa = std.heap.GeneralPurposeAllocator(.{}){};
+const gpa = mygpa.allocator();
+
+const payload =
+    \\{ 
+    \\  "val_number": 0.12, 
+    \\  "val_boolean": true,
+    \\  "val_string": "Hallo Welt"
+    \\}
+;
+
+pub fn main() !void {
+    var stream = std.json.TokenStream.init(payload);
+    const res = std.json.parse(t.TestAtom, &stream, .{ .allocator = gpa }) catch unreachable;
+
+    std.log.info("{} {s}", .{ res, res.val_string });
+}

src/index.ts

@@ -44,22 +44,29 @@ yargs(hideBin(process.argv))
             });
       },
       (argv) => {
-         if (argv.verbose) {dbg.enable("app");}
+         if (argv.verbose) {
+            dbg.enable("app");
+         }
          log("Received compile command with args", argv);
 
          startCompile({
             input: argv.input,
             targets: argv.output as any,
-            emitDefinitions: argv.definition
-         })
+            emitDefinitions: argv.definition,
+         });
       }
    )
-   .command("targets", "List all targets", (yargs)=>yargs, ()=>{
-      console.log("Targets:")
+   .command(
+      "targets",
+      "List all targets",
+      (yargs) => yargs,
+      () => {
+         console.log("Targets:");
          Targets.forEach((__dirname, target) => {
             console.log("   " + target);
-      })
-   })
+         });
+      }
+   )
    .option("verbose", {
       alias: "v",
       type: "boolean",

src/process.ts

@@ -12,6 +12,7 @@ import {
 } from "./targets/typescript";
 import { CSharpTarget } from "./targets/csharp";
 import { RustTarget } from "./targets/rust";
+import { ZIGTarget } from "./targets/zig";
 
 class CatchedError extends Error {}
 
@@ -23,6 +24,7 @@ Targets.set("ts-esm", ESMTypescriptTarget);
 Targets.set("ts-node", NodeJSTypescriptTarget);
 Targets.set("c#", CSharpTarget as typeof CompileTarget);
 Targets.set("rust", RustTarget as typeof CompileTarget);
+Targets.set("zig", ZIGTarget as typeof CompileTarget);
 
 function indexToLineAndCol(src: string, index: number) {
    let line = 1;

src/targets/zig.ts

@@ -0,0 +1,107 @@
+import { TypeDefinition, ServiceDefinition, EnumDefinition, Step } from "../ir";
+
+import { CompileTarget } from "../compile";
+import { LineAppender, lineAppender } from "../utils";
+import chalk from "chalk";
+
+const conversion = {
+   boolean: "bool",
+   int: "i64",
+   float: "f64",
+   string: "[]u8",
+   void: "void",
+   bytes: "[]u8",
+};
+
+function toZigType(type: string): string {
+   return (conversion as any)[type] || type;
+}
+
+export class ZIGTarget extends CompileTarget<{ csharp_namespace: string }> {
+   name: string = "zig";
+
+   start(): void {
+      if (this.options.allow_bytes == true) {
+         throw new Error("Zig has no support for 'bytes' yet!");
+      }
+   }
+
+   getImport(name: string) {
+      return `const ${name} = @import("./${name}.zig").${name};`;
+   }
+
+   generateImports(a: lineAppender, def: TypeDefinition | ServiceDefinition) {
+      a(0, `const std = @import("std");`);
+      def.depends.forEach((dep) => {
+         a(0, this.getImport(dep));
+      });
+   }
+
+   generateType(definition: TypeDefinition): void {
+      const { a, getResult } = LineAppender();
+
+      this.generateImports(a, definition);
+
+      a(0, ``);
+
+      a(0, `pub const ${definition.name} = struct {`);
+      for (const field of definition.fields) {
+         if (field.array) {
+            a(1, `${field.name}: std.ArrayList(${toZigType(field.type)}),`);
+         } else if (field.map) {
+            a(
+               1,
+               `${field.name}: std.AutoHashMap(${toZigType(
+                  field.map
+               )}, ${toZigType(field.type)}),`
+            );
+         } else {
+            a(1, `${field.name}: ${toZigType(field.type)},`);
+         }
+      }
+
+      a(0, `};`);
+
+      this.writeFile(`${definition.name}.zig`, getResult());
+   }
+
+   generateEnum(definition: EnumDefinition): void {
+      const { a, getResult } = LineAppender();
+
+      a(0, `pub const ${definition.name} = enum(i32) {`);
+      for (const entry of definition.values) {
+         a(1, `${entry.name} = ${entry.value},`);
+      }
+      a(0, `};`);
+
+      this.writeFile(`${definition.name}.zig`, getResult());
+   }
+
+   generateService(definition: ServiceDefinition): void {
+      throw new Error("Method not implemented.");
+   }
+
+   finalize(steps: Step[]): void {
+      const { a, getResult } = LineAppender();
+
+      steps.forEach(([type, def]) => {
+         switch (type) {
+            case "type":
+               a(0, `pub ${this.getImport(def.name)}`);
+               break;
+            case "enum":
+               a(0, `pub ${this.getImport(def.name)}`);
+               break;
+            default:
+               console.warn(
+                  chalk.yellow("WARNING:"),
+                  "unimplemented step found:",
+                  type
+               );
+            // case "service":
+         }
+      });
+
+      this.writeFile(`mod.zig`, getResult());
+   }
+}

src/utils.ts

@@ -0,0 +1,20 @@
+export type lineAppender = (ind: number, line: string | string[]) => void;
+
+export function LineAppender(indentSize = 3): {
+   a: lineAppender;
+   getResult: () => string;
+} {
+   const lines: string[] = [];
+
+   return {
+      a: (indentation: number, line: string | string[]) => {
+         if (!Array.isArray(line)) {
+            line = [line];
+         }
+         line.forEach((l) =>
+            lines.push(" ".repeat(indentation * indentSize) + l.trim())
+         );
+      },
+      getResult: () => lines.join("\n"),
+   };
+}