1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
const std = @import("std");
const tokenizer = @import("tokenizer.zig");
const parser = @import("parser.zig");
const evaluator = @import("evaluator.zig");
pub fn main() !void {
const stdout = std.io.getStdOut().writer();
const stdin = std.io.getStdIn().reader();
const pathLen = std.mem.len(std.os.argv[1]);
const path = std.os.argv[1][0..pathLen];
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
const allocator = gpa.allocator();
defer {
const deinit_status = gpa.deinit();
if (deinit_status == .leak) @panic("Memory leak detected!");
}
const source_evaluator = try evaluator.Evaluator.init(allocator);
defer source_evaluator.deinit();
var arena = std.heap.ArenaAllocator.init(allocator);
defer arena.deinit();
if (std.mem.eql(u8, path, "-i")) {
while (true) {
try stdout.print("> ", .{});
const buf = try stdin.readUntilDelimiterAlloc(allocator, '\n', 1024);
defer allocator.free(buf);
process_buf(buf, allocator, &arena, source_evaluator) catch |err| {
try stdout.print("Error processing line: {any}\n", .{err});
};
}
} else {
std.debug.print("Tokenizing! {s}\n", .{path});
const file = try std.fs.cwd().openFile(path, .{});
const buf = try file.readToEndAlloc(allocator, 1 * 1024 * 1024);
defer allocator.free(buf);
try process_buf(buf, allocator, &arena, source_evaluator);
}
}
fn process_buf(buf: []u8, allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator, source_evaluator: *evaluator.Evaluator) !void {
std.debug.print("Buf:\n{s}\n", .{buf});
var token_list = std.ArrayList(tokenizer.Token).init(allocator);
defer token_list.deinit();
var source_tokenizer = try tokenizer.Tokenizer.init(buf);
while (source_tokenizer.next()) |token| {
try token_list.append(token);
}
for (token_list.items) |token| {
std.debug.print("{any}\n", .{token});
}
const source_parser = try parser.Parser.init(token_list.items, arena.allocator());
const ast = try source_parser.parse();
std.debug.print("AST: {any}\n", .{ast});
const result = try source_evaluator.evaluate_ast(ast);
std.debug.print("Evaluation result: {any}\n", .{result});
}
test {
std.testing.refAllDecls(@This());
}
|
