Added examples for extern and packed struct (#277)

docs/examples/extern-struct-example-1.js

@@ -0,0 +1,11 @@
+import { ext_struct, reg_struct } from './extern-struct-example-1.zig';
+
+console.log('Extern:');
+console.log(ext_struct.dataView.getInt16(0, true));
+console.log(ext_struct.dataView.getBigInt64(8, true));
+console.log('Regular (wrong):');
+console.log(reg_struct.dataView.getInt16(0, true));
+console.log(reg_struct.dataView.getBigInt64(8, true));
+console.log('Regular (correct):');
+console.log(reg_struct.dataView.getInt16(8, true));
+console.log(reg_struct.dataView.getBigInt64(0, true));

docs/examples/extern-struct-example-1.txt

@@ -0,0 +1,9 @@
+Extern:
+123
+456n
+Regular (wrong):
+456
+123n
+Regular (correct):
+123
+456n

docs/examples/extern-struct-example-1.zig

@@ -0,0 +1,12 @@
+pub const ExternStruct = extern struct {
+    small_int: i16,
+    big_int: i64,
+};
+
+pub const RegularStruct = struct {
+    small_int: i16,
+    big_int: i64,
+};
+
+pub const ext_struct: ExternStruct = .{ .small_int = 123, .big_int = 456 };
+pub const reg_struct: RegularStruct = .{ .small_int = 123, .big_int = 456 };

docs/examples/extern-struct-example-1b.js

@@ -0,0 +1,4 @@
+import { ext_struct, reg_struct } from './extern-struct-example-1.zig';
+
+console.log(ext_struct.dataView.byteLength);
+console.log(reg_struct.dataView.byteLength);

docs/examples/extern-struct-example-1b.txt

@@ -0,0 +1,2 @@
+32
+24

docs/examples/packed-struct-example-1.js

@@ -0,0 +1,6 @@
+import { pac_struct, reg_struct } from './packed-struct-example-1.zig';
+
+console.log(pac_struct.valueOf());
+console.log(reg_struct.valueOf());
+console.log(pac_struct.dataView.byteLength);
+console.log(reg_struct.dataView.byteLength);

docs/examples/packed-struct-example-1.txt

@@ -0,0 +1,20 @@
+{
+  state_a: false,
+  state_b: true,
+  state_c: false,
+  state_d: false,
+  state_e: false,
+  state_f: false,
+  state_g: false
+}
+{
+  state_a: false,
+  state_b: true,
+  state_c: false,
+  state_d: false,
+  state_e: false,
+  state_f: false,
+  state_g: false
+}
+1
+7

docs/examples/packed-struct-example-1.zig

@@ -0,0 +1,22 @@
+pub const PackedStruct = packed struct {
+    state_a: bool = false,
+    state_b: bool = true,
+    state_c: bool = false,
+    state_d: bool = false,
+    state_e: bool = false,
+    state_f: bool = false,
+    state_g: bool = false,
+};
+
+pub const RegularStruct = struct {
+    state_a: bool = false,
+    state_b: bool = true,
+    state_c: bool = false,
+    state_d: bool = false,
+    state_e: bool = false,
+    state_f: bool = false,
+    state_g: bool = false,
+};
+
+pub const pac_struct: PackedStruct = .{};
+pub const reg_struct: RegularStruct = .{};

docs/examples/packed-struct-example-2.js

@@ -0,0 +1,3 @@
+import { weird_struct } from './packed-struct-example-2.zig';
+
+console.log(weird_struct.valueOf());

docs/examples/packed-struct-example-2.txt

@@ -0,0 +1 @@
+{ state: false, number: 123456789000000n }

docs/examples/packed-struct-example-2.zig

@@ -0,0 +1,6 @@
+pub const WeirdStruct = packed struct {
+    state: bool = false,
+    number: u128 = 123456789000000,
+};
+
+pub const weird_struct: WeirdStruct = .{};