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const std = @import("std");
const tok = @import("tokenize.zig");
const parse = @import("parser.zig");
const gen = @import("codegen.zig");
const symb = @import("symtable.zig");
pub fn main() !void {
if (std.os.argv.len < 2) {
std.debug.print(
\\info: Usage: calico [input file]
\\
, .{});
return;
}
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
var allocator = gpa.allocator();
defer _ = gpa.deinit();
var args = std.process.args();
_ = args.skip();
const inputFileName = args.next();
var out_name: []const u8 = "out";
if (std.os.argv.len == 3) out_name = args.next().?;
const inputFile = try std.fs.cwd().openFile(inputFileName.?, .{});
defer inputFile.close();
std.fs.cwd().makeDir("calico-out") catch |err|
if (err != error.PathAlreadyExists) return err;
// Setup native code writer
const outFileName = try getFileName(allocator, out_name, "ll");
defer allocator.free(outFileName);
const outfile = try std.fs.cwd().createFile(outFileName, .{});
const outWriter = outfile.writer();
defer outfile.close();
// Turn the input file into a string
const all = try inputFile.readToEndAlloc(allocator, 2048);
defer allocator.free(all);
// Tokenize
var tokenizer = tok.Tokenizer.init(allocator, all);
defer tokenizer.deinit();
const tokens = try tokenizer.tokenize();
// Parse
var symbTable = try initSymbolTable(allocator);
defer symbTable.deinit();
var parser = parse.Parser.init(allocator, tokens, symbTable);
defer parser.deinit();
const tree = try parser.parse();
var treeNode = tree.asNode();
var pop = symb.Populator.init(allocator);
try pop.populateSymtable(&treeNode);
// Codegen
var arena = std.heap.ArenaAllocator.init(allocator);
defer arena.deinit();
var generator = gen.Generator.init(arena.allocator(), tree);
defer generator.deinit();
const code = try generator.generate();
try outWriter.writeAll(code);
const binFile = try getFileName(allocator, out_name, "");
defer allocator.free(binFile);
const ldargv = [_][]const u8{ "clang", "-o", binFile, outFileName };
const ldproc = try std.process.Child.run(.{ .argv = &ldargv, .allocator = allocator });
defer allocator.free(ldproc.stdout);
defer allocator.free(ldproc.stderr);
std.debug.print("code: \n{s}", .{code});
}
/// Get file extension based on filename
inline fn getFileName(allocator: std.mem.Allocator, out_name: []const u8, fileType: []const u8) ![]const u8 {
var hasDot: []const u8 = ".";
if (fileType.len == 0) hasDot = "";
return try std.fmt.allocPrint(allocator, "calico-out/{s}{s}{s}", .{ out_name, hasDot, fileType });
}
pub fn initSymbolTable(allocator: std.mem.Allocator) !*symb.SymbolTable {
var table = try symb.SymbolTable.init(allocator);
const intSymb: symb.SymbType = symb.SymbType.Integer;
if (!try table.insert("i32", intSymb.toSymb())) return error.FailedToInsert;
return table;
}
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