68 lines
2.0 KiB
Zig
68 lines
2.0 KiB
Zig
const std = @import("std");
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const scanners = @import("scanner.zig");
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const parsers = @import("parser.zig");
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const main = @import("main.zig");
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const ast = @import("ast.zig");
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const tokens = @import("tokens.zig");
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const printer = @import("ast_printer.zig");
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const Allocator = std.mem.Allocator;
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const Result = main.Result;
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const Parser = parsers.Parser;
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pub const Runner = struct {
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allocator: *Allocator,
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stdout: main.StdOut,
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pub fn init(allocator: *Allocator, stdout: main.StdOut) Runner {
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return Runner{ .allocator = allocator, .stdout = stdout };
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}
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fn testScanner(self: *Runner, scanner: *scanners.Scanner) !void {
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while (true) {
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var tok_opt = scanner.nextToken() catch |err| {
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try self.stdout.print(
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"error at '{}': {}\n",
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scanner.currentLexeme(),
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err,
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);
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return Result.ScannerError;
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};
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if (tok_opt) |tok| {
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if (tok.ttype == .EOF) break;
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try self.stdout.print("{x}\n", tok);
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}
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}
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}
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pub fn execute(self: *Runner, code: []u8) !void {
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var scanner = scanners.Scanner.init(self.allocator, code);
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try self.testScanner(&scanner);
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scanner = scanners.Scanner.init(self.allocator, code);
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var parser = Parser.init(self.allocator, &scanner);
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var expr_opt = try parser.parse();
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//var expr = ast.mkBinary(
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// &ast.mkUnary(
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// tokens.Token{ .ttype = .Minus, .lexeme = "-", .line = 1 },
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// &ast.mkNum(i32, 123),
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// ),
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// tokens.Token{ .ttype = .Star, .lexeme = "*", .line = 1 },
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// &ast.mkGrouping(&ast.mkNum(f32, 45.67)),
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//);
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if (expr_opt) |expr_ptr| {
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printer.printAst(expr_ptr);
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std.debug.warn("\n");
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} else {
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return Result.CompileError;
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}
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return Result.Ok;
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}
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};
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