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const std = @import("std");
const lex = @import("js_lexer.zig");
const logger = @import("logger.zig");
const alloc = @import("alloc.zig");
const options = @import("options.zig");
const js_parser = @import("js_parser.zig");
const json_parser = @import("json_parser.zig");
const js_printer = @import("js_printer.zig");
const js_ast = @import("js_ast.zig");
const linker = @import("linker.zig");
usingnamespace @import("ast/base.zig");
usingnamespace @import("defines.zig");
const panicky = @import("panic_handler.zig");
usingnamespace @import("global.zig");
const fs = @import("fs.zig");
const Schema = @import("api/schema.zig").Api;
const builtin = std.builtin;
const MainPanicHandler = panicky.NewPanicHandler(panicky.default_panic);
pub fn panic(msg: []const u8, error_return_trace: ?*std.builtin.StackTrace) noreturn {
if (MainPanicHandler.Singleton) |singleton| {
MainPanicHandler.handle_panic(msg, error_return_trace);
} else {
panicky.default_panic(msg, error_return_trace);
}
}
var default_options = std.mem.zeroes(Schema.TransformOptions);
pub const Uint8Array = packed struct {
pub const Float = @Type(builtin.TypeInfo{ .Float = .{ .bits = 2 * @bitSizeOf(usize) } });
pub const Abi = if (builtin.target.isWasm()) Float else Uint8Array;
ptr: [*]u8,
len: usize,
pub fn toSlice(raw: Abi) []u8 {
const self = @bitCast(Uint8Array, raw);
return self.ptr[0..self.len];
}
pub fn fromSlice(slice: []u8) Abi {
const self = Uint8Array{ .ptr = slice.ptr, .len = slice.len };
return @bitCast(Abi, self);
}
pub fn empty() Abi {
return Uint8Array.fromSlice(&[0]u8{});
}
pub fn encode(comptime SchemaType: type, obj: SchemaType) !Abi {
var list = std.ArrayList(u8).init(alloc.dynamic);
var writer = list.writer();
try obj.encode(writer);
return Uint8Array.fromSlice(list.toOwnedSlice());
}
pub fn decode(self: Abi, comptime SchemaType: type) !SchemaType {
var buf = Uint8Array.toSlice(self);
var stream = std.io.fixedBufferStream(buf);
return try SchemaType.decode(alloc.dynamic, stream.reader());
}
};
pub fn constStrToU8(s: string) []u8 {
return @intToPtr([*]u8, @ptrToInt(s.ptr))[0..s.len];
}
pub const Api = struct {
options: *Schema.TransformOptions = &default_options,
files: std.ArrayList(string),
log: logger.Log,
pub fn transform(self: *Api, request: Schema.Transform) !Schema.TransformResponse {
const opts = try options.TransformOptions.initUncached(alloc.dynamic, request.path.?, request.contents.?);
var source = logger.Source.initFile(opts.entry_point, alloc.dynamic);
var ast: js_ast.Ast = undefined;
var raw_defines = RawDefines.init(alloc.static);
try raw_defines.put("process.env.NODE_ENV", "\"development\"");
var user_defines = try DefineData.from_input(raw_defines, &self.log, alloc.static);
var define = try Define.init(
alloc.static,
user_defines,
);
switch (opts.loader) {
.json => {
var expr = try json_parser.ParseJSON(&source, &self.log, alloc.dynamic);
var stmt = js_ast.Stmt.alloc(alloc.dynamic, js_ast.S.ExportDefault{
.value = js_ast.StmtOrExpr{ .expr = expr },
.default_name = js_ast.LocRef{ .loc = logger.Loc{}, .ref = Ref{} },
}, logger.Loc{ .start = 0 });
var part = js_ast.Part{
.stmts = &([_]js_ast.Stmt{stmt}),
};
ast = js_ast.Ast.initTest(&([_]js_ast.Part{part}));
},
.jsx, .tsx, .ts, .js => {
var parser = try js_parser.Parser.init(opts, &self.log, &source, define, alloc.dynamic);
var res = try parser.parse();
ast = res.ast;
},
else => {
Global.panic("Unsupported loader: {s}", .{opts.loader});
},
}
var _linker = linker.Linker{};
var symbols: [][]js_ast.Symbol = &([_][]js_ast.Symbol{ast.symbols});
const printed = try js_printer.printAst(
alloc.dynamic,
ast,
js_ast.Symbol.Map.initList(symbols),
&source,
false,
js_printer.Options{ .to_module_ref = ast.module_ref orelse js_ast.Ref{ .inner_index = 0 } },
&_linker,
);
var output_files = try alloc.dynamic.alloc(Schema.OutputFile, 1);
var _data = printed.js[0..printed.js.len];
var _path = constStrToU8(source.path.text);
output_files[0] = Schema.OutputFile{ .data = _data, .path = _path };
var resp = std.mem.zeroes(Schema.TransformResponse);
resp.status = .success;
resp.files = output_files;
return resp;
// var source = logger.Source.initFile(file: fs.File, allocator: *std.mem.Allocator)
}
};
pub const Exports = struct {
fn init() callconv(.C) u8 {
if (alloc.needs_setup) {
var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
var allocator = &arena.allocator;
alloc.setup(allocator) catch return 0;
}
var _api = alloc.static.create(Api) catch return 0;
_api.* = Api{ .files = std.ArrayList(string).init(alloc.dynamic), .log = logger.Log.init(alloc.dynamic) };
api = _api;
return 1;
}
fn transform(abi: Uint8Array.Abi) callconv(.C) Uint8Array.Abi {
const req: Schema.Transform = Uint8Array.decode(abi, Schema.Transform) catch return Uint8Array.empty();
alloc.dynamic.free(Uint8Array.toSlice(abi));
const resp = api.?.transform(req) catch return Uint8Array.empty();
return Uint8Array.encode(Schema.TransformResponse, resp) catch return Uint8Array.empty();
}
fn malloc(size: usize) callconv(.C) ?*c_void {
if (size == 0) {
return null;
}
//const result = alloc.dynamic.alloc(u8, size) catch return null;
const result = alloc.dynamic.allocFn(alloc.dynamic, size, 1, 1, 0) catch return null;
return result.ptr;
}
fn calloc(num_elements: usize, element_size: usize) callconv(.C) ?*c_void {
const size = num_elements *% element_size;
const c_ptr = @call(.{ .modifier = .never_inline }, malloc, .{size});
if (c_ptr) |ptr| {
const p = @ptrCast([*]u8, ptr);
@memset(p, 0, size);
}
return c_ptr;
}
fn realloc(c_ptr: ?*c_void, new_size: usize) callconv(.C) ?*c_void {
if (new_size == 0) {
@call(.{ .modifier = .never_inline }, free, .{c_ptr});
return null;
} else if (c_ptr) |ptr| {
// Use a synthetic slice
const p = @ptrCast([*]u8, ptr);
const result = alloc.dynamic.realloc(p[0..1], new_size) catch return null;
return @ptrCast(*c_void, result.ptr);
} else {
return @call(.{ .modifier = .never_inline }, malloc, .{new_size});
}
}
fn free(c_ptr: ?*c_void) callconv(.C) void {
if (c_ptr) |ptr| {
// Use a synthetic slice. zee_alloc will free via corresponding metadata.
const p = @ptrCast([*]u8, ptr);
//alloc.dynamic.free(p[0..1]);
_ = alloc.dynamic.resizeFn(alloc.dynamic, p[0..1], 0, 0, 0, 0) catch unreachable;
}
}
};
comptime {
@export(Exports.init, .{ .name = "init", .linkage = .Strong });
@export(Exports.transform, .{ .name = "transform", .linkage = .Strong });
@export(Exports.malloc, .{ .name = "malloc", .linkage = .Strong });
@export(Exports.calloc, .{ .name = "calloc", .linkage = .Strong });
@export(Exports.realloc, .{ .name = "realloc", .linkage = .Strong });
@export(Exports.free, .{ .name = "free", .linkage = .Strong });
}
var api: ?*Api = null;
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