1055 lines
37 KiB
Zig
1055 lines
37 KiB
Zig
const std = @import("std");
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const testing = std.testing;
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pub const Tokenizer = struct {
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arena: std.heap.ArenaAllocator,
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index: usize,
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bytes: []const u8,
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error_text: []const u8,
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state: State,
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pub fn init(allocator: *std.mem.Allocator, bytes: []const u8) Tokenizer {
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return Tokenizer{
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.arena = std.heap.ArenaAllocator.init(allocator),
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.index = 0,
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.bytes = bytes,
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.error_text = "",
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.state = State{ .lhs = {} },
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};
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}
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pub fn deinit(self: *Tokenizer) void {
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self.arena.deinit();
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}
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pub fn next(self: *Tokenizer) Error!?Token {
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while (self.index < self.bytes.len) {
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const char = self.bytes[self.index];
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while (true) {
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switch (self.state) {
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.lhs => switch (char) {
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'\t', '\n', '\r', ' ' => {
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// silently ignore whitespace
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break; // advance
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},
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else => {
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self.state = State{ .target = try std.Buffer.initSize(&self.arena.allocator, 0) };
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},
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},
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.target => |*target| switch (char) {
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'\t', '\n', '\r', ' ' => {
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return self.errorIllegalChar(self.index, char, "invalid target", .{});
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},
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'$' => {
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self.state = State{ .target_dollar_sign = target.* };
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break; // advance
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},
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'\\' => {
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self.state = State{ .target_reverse_solidus = target.* };
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break; // advance
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},
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':' => {
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self.state = State{ .target_colon = target.* };
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break; // advance
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},
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else => {
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try target.appendByte(char);
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break; // advance
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},
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},
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.target_reverse_solidus => |*target| switch (char) {
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'\t', '\n', '\r' => {
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return self.errorIllegalChar(self.index, char, "bad target escape", .{});
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},
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' ', '#', '\\' => {
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try target.appendByte(char);
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self.state = State{ .target = target.* };
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break; // advance
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},
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'$' => {
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try target.append(self.bytes[self.index - 1 .. self.index]);
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self.state = State{ .target_dollar_sign = target.* };
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break; // advance
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},
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else => {
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try target.append(self.bytes[self.index - 1 .. self.index + 1]);
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self.state = State{ .target = target.* };
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break; // advance
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},
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},
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.target_dollar_sign => |*target| switch (char) {
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'$' => {
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try target.appendByte(char);
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self.state = State{ .target = target.* };
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break; // advance
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},
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else => {
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return self.errorIllegalChar(self.index, char, "expecting '$'", .{});
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},
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},
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.target_colon => |*target| switch (char) {
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'\n', '\r' => {
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const bytes = target.toSlice();
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if (bytes.len != 0) {
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self.state = State{ .lhs = {} };
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return Token{ .id = .target, .bytes = bytes };
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}
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// silently ignore null target
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self.state = State{ .lhs = {} };
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continue;
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},
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'\\' => {
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self.state = State{ .target_colon_reverse_solidus = target.* };
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break; // advance
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},
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else => {
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const bytes = target.toSlice();
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if (bytes.len != 0) {
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self.state = State{ .rhs = {} };
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return Token{ .id = .target, .bytes = bytes };
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}
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// silently ignore null target
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self.state = State{ .lhs = {} };
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continue;
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},
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},
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.target_colon_reverse_solidus => |*target| switch (char) {
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'\n', '\r' => {
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const bytes = target.toSlice();
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if (bytes.len != 0) {
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self.state = State{ .lhs = {} };
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return Token{ .id = .target, .bytes = bytes };
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}
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// silently ignore null target
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self.state = State{ .lhs = {} };
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continue;
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},
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else => {
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try target.append(self.bytes[self.index - 2 .. self.index + 1]);
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self.state = State{ .target = target.* };
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break;
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},
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},
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.rhs => switch (char) {
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'\t', ' ' => {
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// silently ignore horizontal whitespace
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break; // advance
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},
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'\n', '\r' => {
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self.state = State{ .lhs = {} };
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continue;
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},
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'\\' => {
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self.state = State{ .rhs_continuation = {} };
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break; // advance
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},
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'"' => {
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self.state = State{ .prereq_quote = try std.Buffer.initSize(&self.arena.allocator, 0) };
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break; // advance
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},
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else => {
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self.state = State{ .prereq = try std.Buffer.initSize(&self.arena.allocator, 0) };
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},
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},
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.rhs_continuation => switch (char) {
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'\n' => {
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self.state = State{ .rhs = {} };
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break; // advance
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},
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'\r' => {
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self.state = State{ .rhs_continuation_linefeed = {} };
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break; // advance
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},
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else => {
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return self.errorIllegalChar(self.index, char, "continuation expecting end-of-line", .{});
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},
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},
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.rhs_continuation_linefeed => switch (char) {
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'\n' => {
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self.state = State{ .rhs = {} };
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break; // advance
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},
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else => {
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return self.errorIllegalChar(self.index, char, "continuation expecting end-of-line", .{});
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},
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},
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.prereq_quote => |*prereq| switch (char) {
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'"' => {
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const bytes = prereq.toSlice();
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self.index += 1;
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self.state = State{ .rhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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else => {
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try prereq.appendByte(char);
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break; // advance
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},
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},
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.prereq => |*prereq| switch (char) {
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'\t', ' ' => {
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const bytes = prereq.toSlice();
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self.state = State{ .rhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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'\n', '\r' => {
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const bytes = prereq.toSlice();
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self.state = State{ .lhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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'\\' => {
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self.state = State{ .prereq_continuation = prereq.* };
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break; // advance
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},
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else => {
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try prereq.appendByte(char);
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break; // advance
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},
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},
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.prereq_continuation => |*prereq| switch (char) {
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'\n' => {
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const bytes = prereq.toSlice();
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self.index += 1;
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self.state = State{ .rhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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'\r' => {
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self.state = State{ .prereq_continuation_linefeed = prereq.* };
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break; // advance
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},
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else => {
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// not continuation
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try prereq.append(self.bytes[self.index - 1 .. self.index + 1]);
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self.state = State{ .prereq = prereq.* };
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break; // advance
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},
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},
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.prereq_continuation_linefeed => |prereq| switch (char) {
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'\n' => {
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const bytes = prereq.toSlice();
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self.index += 1;
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self.state = State{ .rhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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else => {
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return self.errorIllegalChar(self.index, char, "continuation expecting end-of-line", .{});
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},
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},
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}
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}
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self.index += 1;
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}
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// eof, handle maybe incomplete token
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if (self.index == 0) return null;
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const idx = self.index - 1;
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switch (self.state) {
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.lhs,
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.rhs,
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.rhs_continuation,
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.rhs_continuation_linefeed,
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=> {},
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.target => |target| {
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return self.errorPosition(idx, target.toSlice(), "incomplete target", .{});
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},
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.target_reverse_solidus,
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.target_dollar_sign,
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=> {
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const index = self.index - 1;
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return self.errorIllegalChar(idx, self.bytes[idx], "incomplete escape", .{});
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},
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.target_colon => |target| {
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const bytes = target.toSlice();
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if (bytes.len != 0) {
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self.index += 1;
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self.state = State{ .rhs = {} };
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return Token{ .id = .target, .bytes = bytes };
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}
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// silently ignore null target
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self.state = State{ .lhs = {} };
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},
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.target_colon_reverse_solidus => |target| {
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const bytes = target.toSlice();
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if (bytes.len != 0) {
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self.index += 1;
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self.state = State{ .rhs = {} };
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return Token{ .id = .target, .bytes = bytes };
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}
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// silently ignore null target
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self.state = State{ .lhs = {} };
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},
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.prereq_quote => |prereq| {
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return self.errorPosition(idx, prereq.toSlice(), "incomplete quoted prerequisite", .{});
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},
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.prereq => |prereq| {
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const bytes = prereq.toSlice();
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self.state = State{ .lhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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.prereq_continuation => |prereq| {
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const bytes = prereq.toSlice();
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self.state = State{ .lhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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.prereq_continuation_linefeed => |prereq| {
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const bytes = prereq.toSlice();
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self.state = State{ .lhs = {} };
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return Token{ .id = .prereq, .bytes = bytes };
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},
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}
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return null;
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}
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fn errorf(self: *Tokenizer, comptime fmt: []const u8, args: var) Error {
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self.error_text = (try std.Buffer.allocPrint(&self.arena.allocator, fmt, args)).toSlice();
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return Error.InvalidInput;
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}
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fn errorPosition(self: *Tokenizer, position: usize, bytes: []const u8, comptime fmt: []const u8, args: var) Error {
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var buffer = try std.Buffer.initSize(&self.arena.allocator, 0);
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std.fmt.format(&buffer, anyerror, std.Buffer.append, fmt, args) catch {};
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try buffer.append(" '");
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var out = makeOutput(std.Buffer.append, &buffer);
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try printCharValues(&out, bytes);
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try buffer.append("'");
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std.fmt.format(&buffer, anyerror, std.Buffer.append, " at position {}", .{position - (bytes.len - 1)}) catch {};
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self.error_text = buffer.toSlice();
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return Error.InvalidInput;
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}
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fn errorIllegalChar(self: *Tokenizer, position: usize, char: u8, comptime fmt: []const u8, args: var) Error {
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var buffer = try std.Buffer.initSize(&self.arena.allocator, 0);
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try buffer.append("illegal char ");
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var out = makeOutput(std.Buffer.append, &buffer);
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try printUnderstandableChar(&out, char);
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std.fmt.format(&buffer, anyerror, std.Buffer.append, " at position {}", .{position}) catch {};
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if (fmt.len != 0) std.fmt.format(&buffer, anyerror, std.Buffer.append, ": " ++ fmt, args) catch {};
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self.error_text = buffer.toSlice();
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return Error.InvalidInput;
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}
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const Error = error{
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OutOfMemory,
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InvalidInput,
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};
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const State = union(enum) {
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lhs: void,
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target: std.Buffer,
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target_reverse_solidus: std.Buffer,
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target_dollar_sign: std.Buffer,
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target_colon: std.Buffer,
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target_colon_reverse_solidus: std.Buffer,
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rhs: void,
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rhs_continuation: void,
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rhs_continuation_linefeed: void,
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prereq_quote: std.Buffer,
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prereq: std.Buffer,
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prereq_continuation: std.Buffer,
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prereq_continuation_linefeed: std.Buffer,
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};
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const Token = struct {
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id: ID,
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bytes: []const u8,
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const ID = enum {
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target,
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prereq,
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};
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};
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};
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test "empty file" {
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try depTokenizer("", "");
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}
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test "empty whitespace" {
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try depTokenizer("\n", "");
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try depTokenizer("\r", "");
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try depTokenizer("\r\n", "");
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try depTokenizer(" ", "");
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}
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test "empty colon" {
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try depTokenizer(":", "");
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try depTokenizer("\n:", "");
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try depTokenizer("\r:", "");
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try depTokenizer("\r\n:", "");
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try depTokenizer(" :", "");
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}
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test "empty target" {
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try depTokenizer("foo.o:", "target = {foo.o}");
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try depTokenizer(
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\\foo.o:
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\\bar.o:
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\\abcd.o:
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,
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\\target = {foo.o}
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\\target = {bar.o}
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\\target = {abcd.o}
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);
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}
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test "whitespace empty target" {
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try depTokenizer("\nfoo.o:", "target = {foo.o}");
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try depTokenizer("\rfoo.o:", "target = {foo.o}");
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try depTokenizer("\r\nfoo.o:", "target = {foo.o}");
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try depTokenizer(" foo.o:", "target = {foo.o}");
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}
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test "escape empty target" {
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try depTokenizer("\\ foo.o:", "target = { foo.o}");
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try depTokenizer("\\#foo.o:", "target = {#foo.o}");
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try depTokenizer("\\\\foo.o:", "target = {\\foo.o}");
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try depTokenizer("$$foo.o:", "target = {$foo.o}");
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}
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test "empty target linefeeds" {
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try depTokenizer("\n", "");
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try depTokenizer("\r\n", "");
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const expect = "target = {foo.o}";
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try depTokenizer(
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\\foo.o:
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, expect);
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try depTokenizer(
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\\foo.o:
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\\
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, expect);
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try depTokenizer(
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\\foo.o:
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, expect);
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try depTokenizer(
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\\foo.o:
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\\
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, expect);
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}
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test "empty target linefeeds + continuations" {
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const expect = "target = {foo.o}";
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try depTokenizer(
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\\foo.o:\
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, expect);
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try depTokenizer(
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\\foo.o:\
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\\
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, expect);
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try depTokenizer(
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\\foo.o:\
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, expect);
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try depTokenizer(
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\\foo.o:\
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\\
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, expect);
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}
|
|
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test "empty target linefeeds + hspace + continuations" {
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const expect = "target = {foo.o}";
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try depTokenizer(
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\\foo.o: \
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, expect);
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try depTokenizer(
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\\foo.o: \
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|
\\
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|
, expect);
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|
try depTokenizer(
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|
\\foo.o: \
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, expect);
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|
try depTokenizer(
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\\foo.o: \
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\\
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, expect);
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}
|
|
|
|
test "prereq" {
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const expect =
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\\target = {foo.o}
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\\prereq = {foo.c}
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;
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try depTokenizer("foo.o: foo.c", expect);
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try depTokenizer(
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\\foo.o: \
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|
\\foo.c
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, expect);
|
|
try depTokenizer(
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|
\\foo.o: \
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|
\\ foo.c
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, expect);
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|
try depTokenizer(
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\\foo.o: \
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\\ foo.c
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, expect);
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|
}
|
|
|
|
test "prereq continuation" {
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|
const expect =
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\\target = {foo.o}
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\\prereq = {foo.h}
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\\prereq = {bar.h}
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|
;
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|
try depTokenizer(
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\\foo.o: foo.h\
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|
\\bar.h
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|
, expect);
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|
try depTokenizer(
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|
\\foo.o: foo.h\
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|
\\bar.h
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|
, expect);
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|
}
|
|
|
|
test "multiple prereqs" {
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|
const expect =
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\\target = {foo.o}
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\\prereq = {foo.c}
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\\prereq = {foo.h}
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\\prereq = {bar.h}
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;
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try depTokenizer("foo.o: foo.c foo.h bar.h", expect);
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|
try depTokenizer(
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\\foo.o: \
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|
\\foo.c foo.h bar.h
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|
, expect);
|
|
try depTokenizer(
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|
\\foo.o: foo.c foo.h bar.h\
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|
, expect);
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|
try depTokenizer(
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|
\\foo.o: foo.c foo.h bar.h\
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|
\\
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, expect);
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|
try depTokenizer(
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|
\\foo.o: \
|
|
\\foo.c \
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|
\\ foo.h\
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|
\\bar.h
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|
\\
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|
, expect);
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|
try depTokenizer(
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|
\\foo.o: \
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|
\\foo.c \
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|
\\ foo.h\
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|
\\bar.h\
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|
\\
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, expect);
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|
try depTokenizer(
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|
\\foo.o: \
|
|
\\foo.c \
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|
\\ foo.h\
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|
\\bar.h\
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, expect);
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|
}
|
|
|
|
test "multiple targets and prereqs" {
|
|
try depTokenizer(
|
|
\\foo.o: foo.c
|
|
\\bar.o: bar.c a.h b.h c.h
|
|
\\abc.o: abc.c \
|
|
\\ one.h two.h \
|
|
\\ three.h four.h
|
|
,
|
|
\\target = {foo.o}
|
|
\\prereq = {foo.c}
|
|
\\target = {bar.o}
|
|
\\prereq = {bar.c}
|
|
\\prereq = {a.h}
|
|
\\prereq = {b.h}
|
|
\\prereq = {c.h}
|
|
\\target = {abc.o}
|
|
\\prereq = {abc.c}
|
|
\\prereq = {one.h}
|
|
\\prereq = {two.h}
|
|
\\prereq = {three.h}
|
|
\\prereq = {four.h}
|
|
);
|
|
try depTokenizer(
|
|
\\ascii.o: ascii.c
|
|
\\base64.o: base64.c stdio.h
|
|
\\elf.o: elf.c a.h b.h c.h
|
|
\\macho.o: \
|
|
\\ macho.c\
|
|
\\ a.h b.h c.h
|
|
,
|
|
\\target = {ascii.o}
|
|
\\prereq = {ascii.c}
|
|
\\target = {base64.o}
|
|
\\prereq = {base64.c}
|
|
\\prereq = {stdio.h}
|
|
\\target = {elf.o}
|
|
\\prereq = {elf.c}
|
|
\\prereq = {a.h}
|
|
\\prereq = {b.h}
|
|
\\prereq = {c.h}
|
|
\\target = {macho.o}
|
|
\\prereq = {macho.c}
|
|
\\prereq = {a.h}
|
|
\\prereq = {b.h}
|
|
\\prereq = {c.h}
|
|
);
|
|
try depTokenizer(
|
|
\\a$$scii.o: ascii.c
|
|
\\\\base64.o: "\base64.c" "s t#dio.h"
|
|
\\e\\lf.o: "e\lf.c" "a.h$$" "$$b.h c.h$$"
|
|
\\macho.o: \
|
|
\\ "macho!.c" \
|
|
\\ a.h b.h c.h
|
|
,
|
|
\\target = {a$scii.o}
|
|
\\prereq = {ascii.c}
|
|
\\target = {\base64.o}
|
|
\\prereq = {\base64.c}
|
|
\\prereq = {s t#dio.h}
|
|
\\target = {e\lf.o}
|
|
\\prereq = {e\lf.c}
|
|
\\prereq = {a.h$$}
|
|
\\prereq = {$$b.h c.h$$}
|
|
\\target = {macho.o}
|
|
\\prereq = {macho!.c}
|
|
\\prereq = {a.h}
|
|
\\prereq = {b.h}
|
|
\\prereq = {c.h}
|
|
);
|
|
}
|
|
|
|
test "windows quoted prereqs" {
|
|
try depTokenizer(
|
|
\\c:\foo.o: "C:\Program Files (x86)\Microsoft Visual Studio\foo.c"
|
|
\\c:\foo2.o: "C:\Program Files (x86)\Microsoft Visual Studio\foo2.c" \
|
|
\\ "C:\Program Files (x86)\Microsoft Visual Studio\foo1.h" \
|
|
\\ "C:\Program Files (x86)\Microsoft Visual Studio\foo2.h"
|
|
,
|
|
\\target = {c:\foo.o}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\foo.c}
|
|
\\target = {c:\foo2.o}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\foo2.c}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\foo1.h}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\foo2.h}
|
|
);
|
|
}
|
|
|
|
test "windows mixed prereqs" {
|
|
try depTokenizer(
|
|
\\cimport.o: \
|
|
\\ C:\msys64\home\anon\project\zig\master\zig-cache\o\qhvhbUo7GU5iKyQ5mpA8TcQpncCYaQu0wwvr3ybiSTj_Dtqi1Nmcb70kfODJ2Qlg\cimport.h \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\stdio.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt.h" \
|
|
\\ "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\vcruntime.h" \
|
|
\\ "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\sal.h" \
|
|
\\ "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\concurrencysal.h" \
|
|
\\ C:\msys64\opt\zig\lib\zig\include\vadefs.h \
|
|
\\ "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\vadefs.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_wstdio.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_stdio_config.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\string.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_memory.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_memcpy_s.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\errno.h" \
|
|
\\ "C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\vcruntime_string.h" \
|
|
\\ "C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_wstring.h"
|
|
,
|
|
\\target = {cimport.o}
|
|
\\prereq = {C:\msys64\home\anon\project\zig\master\zig-cache\o\qhvhbUo7GU5iKyQ5mpA8TcQpncCYaQu0wwvr3ybiSTj_Dtqi1Nmcb70kfODJ2Qlg\cimport.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\stdio.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt.h}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\vcruntime.h}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\sal.h}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\concurrencysal.h}
|
|
\\prereq = {C:\msys64\opt\zig\lib\zig\include\vadefs.h}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\vadefs.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_wstdio.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_stdio_config.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\string.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_memory.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_memcpy_s.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\errno.h}
|
|
\\prereq = {C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.21.27702\lib\x64\\..\..\include\vcruntime_string.h}
|
|
\\prereq = {C:\Program Files (x86)\Windows Kits\10\\Include\10.0.17763.0\ucrt\corecrt_wstring.h}
|
|
);
|
|
}
|
|
|
|
test "funky targets" {
|
|
try depTokenizer(
|
|
\\C:\Users\anon\foo.o:
|
|
\\C:\Users\anon\foo\ .o:
|
|
\\C:\Users\anon\foo\#.o:
|
|
\\C:\Users\anon\foo$$.o:
|
|
\\C:\Users\anon\\\ foo.o:
|
|
\\C:\Users\anon\\#foo.o:
|
|
\\C:\Users\anon\$$foo.o:
|
|
\\C:\Users\anon\\\ \ \ \ \ foo.o:
|
|
,
|
|
\\target = {C:\Users\anon\foo.o}
|
|
\\target = {C:\Users\anon\foo .o}
|
|
\\target = {C:\Users\anon\foo#.o}
|
|
\\target = {C:\Users\anon\foo$.o}
|
|
\\target = {C:\Users\anon\ foo.o}
|
|
\\target = {C:\Users\anon\#foo.o}
|
|
\\target = {C:\Users\anon\$foo.o}
|
|
\\target = {C:\Users\anon\ foo.o}
|
|
);
|
|
}
|
|
|
|
test "error incomplete escape - reverse_solidus" {
|
|
try depTokenizer("\\",
|
|
\\ERROR: illegal char '\' at position 0: incomplete escape
|
|
);
|
|
try depTokenizer("\t\\",
|
|
\\ERROR: illegal char '\' at position 1: incomplete escape
|
|
);
|
|
try depTokenizer("\n\\",
|
|
\\ERROR: illegal char '\' at position 1: incomplete escape
|
|
);
|
|
try depTokenizer("\r\\",
|
|
\\ERROR: illegal char '\' at position 1: incomplete escape
|
|
);
|
|
try depTokenizer("\r\n\\",
|
|
\\ERROR: illegal char '\' at position 2: incomplete escape
|
|
);
|
|
try depTokenizer(" \\",
|
|
\\ERROR: illegal char '\' at position 1: incomplete escape
|
|
);
|
|
}
|
|
|
|
test "error incomplete escape - dollar_sign" {
|
|
try depTokenizer("$",
|
|
\\ERROR: illegal char '$' at position 0: incomplete escape
|
|
);
|
|
try depTokenizer("\t$",
|
|
\\ERROR: illegal char '$' at position 1: incomplete escape
|
|
);
|
|
try depTokenizer("\n$",
|
|
\\ERROR: illegal char '$' at position 1: incomplete escape
|
|
);
|
|
try depTokenizer("\r$",
|
|
\\ERROR: illegal char '$' at position 1: incomplete escape
|
|
);
|
|
try depTokenizer("\r\n$",
|
|
\\ERROR: illegal char '$' at position 2: incomplete escape
|
|
);
|
|
try depTokenizer(" $",
|
|
\\ERROR: illegal char '$' at position 1: incomplete escape
|
|
);
|
|
}
|
|
|
|
test "error incomplete target" {
|
|
try depTokenizer("foo.o",
|
|
\\ERROR: incomplete target 'foo.o' at position 0
|
|
);
|
|
try depTokenizer("\tfoo.o",
|
|
\\ERROR: incomplete target 'foo.o' at position 1
|
|
);
|
|
try depTokenizer("\nfoo.o",
|
|
\\ERROR: incomplete target 'foo.o' at position 1
|
|
);
|
|
try depTokenizer("\rfoo.o",
|
|
\\ERROR: incomplete target 'foo.o' at position 1
|
|
);
|
|
try depTokenizer("\r\nfoo.o",
|
|
\\ERROR: incomplete target 'foo.o' at position 2
|
|
);
|
|
try depTokenizer(" foo.o",
|
|
\\ERROR: incomplete target 'foo.o' at position 1
|
|
);
|
|
|
|
try depTokenizer("\\ foo.o",
|
|
\\ERROR: incomplete target ' foo.o' at position 1
|
|
);
|
|
try depTokenizer("\\#foo.o",
|
|
\\ERROR: incomplete target '#foo.o' at position 1
|
|
);
|
|
try depTokenizer("\\\\foo.o",
|
|
\\ERROR: incomplete target '\foo.o' at position 1
|
|
);
|
|
try depTokenizer("$$foo.o",
|
|
\\ERROR: incomplete target '$foo.o' at position 1
|
|
);
|
|
}
|
|
|
|
test "error illegal char at position - bad target escape" {
|
|
try depTokenizer("\\\t",
|
|
\\ERROR: illegal char \x09 at position 1: bad target escape
|
|
);
|
|
try depTokenizer("\\\n",
|
|
\\ERROR: illegal char \x0A at position 1: bad target escape
|
|
);
|
|
try depTokenizer("\\\r",
|
|
\\ERROR: illegal char \x0D at position 1: bad target escape
|
|
);
|
|
try depTokenizer("\\\r\n",
|
|
\\ERROR: illegal char \x0D at position 1: bad target escape
|
|
);
|
|
}
|
|
|
|
test "error illegal char at position - execting dollar_sign" {
|
|
try depTokenizer("$\t",
|
|
\\ERROR: illegal char \x09 at position 1: expecting '$'
|
|
);
|
|
try depTokenizer("$\n",
|
|
\\ERROR: illegal char \x0A at position 1: expecting '$'
|
|
);
|
|
try depTokenizer("$\r",
|
|
\\ERROR: illegal char \x0D at position 1: expecting '$'
|
|
);
|
|
try depTokenizer("$\r\n",
|
|
\\ERROR: illegal char \x0D at position 1: expecting '$'
|
|
);
|
|
}
|
|
|
|
test "error illegal char at position - invalid target" {
|
|
try depTokenizer("foo\t.o",
|
|
\\ERROR: illegal char \x09 at position 3: invalid target
|
|
);
|
|
try depTokenizer("foo\n.o",
|
|
\\ERROR: illegal char \x0A at position 3: invalid target
|
|
);
|
|
try depTokenizer("foo\r.o",
|
|
\\ERROR: illegal char \x0D at position 3: invalid target
|
|
);
|
|
try depTokenizer("foo\r\n.o",
|
|
\\ERROR: illegal char \x0D at position 3: invalid target
|
|
);
|
|
}
|
|
|
|
test "error target - continuation expecting end-of-line" {
|
|
try depTokenizer("foo.o: \\\t",
|
|
\\target = {foo.o}
|
|
\\ERROR: illegal char \x09 at position 8: continuation expecting end-of-line
|
|
);
|
|
try depTokenizer("foo.o: \\ ",
|
|
\\target = {foo.o}
|
|
\\ERROR: illegal char \x20 at position 8: continuation expecting end-of-line
|
|
);
|
|
try depTokenizer("foo.o: \\x",
|
|
\\target = {foo.o}
|
|
\\ERROR: illegal char 'x' at position 8: continuation expecting end-of-line
|
|
);
|
|
try depTokenizer("foo.o: \\\x0dx",
|
|
\\target = {foo.o}
|
|
\\ERROR: illegal char 'x' at position 9: continuation expecting end-of-line
|
|
);
|
|
}
|
|
|
|
test "error prereq - continuation expecting end-of-line" {
|
|
try depTokenizer("foo.o: foo.h\\\x0dx",
|
|
\\target = {foo.o}
|
|
\\ERROR: illegal char 'x' at position 14: continuation expecting end-of-line
|
|
);
|
|
}
|
|
|
|
// - tokenize input, emit textual representation, and compare to expect
|
|
fn depTokenizer(input: []const u8, expect: []const u8) !void {
|
|
var arena_allocator = std.heap.ArenaAllocator.init(std.heap.page_allocator);
|
|
const arena = &arena_allocator.allocator;
|
|
defer arena_allocator.deinit();
|
|
|
|
var it = Tokenizer.init(arena, input);
|
|
var buffer = try std.Buffer.initSize(arena, 0);
|
|
var i: usize = 0;
|
|
while (true) {
|
|
const r = it.next() catch |err| {
|
|
switch (err) {
|
|
Tokenizer.Error.InvalidInput => {
|
|
if (i != 0) try buffer.append("\n");
|
|
try buffer.append("ERROR: ");
|
|
try buffer.append(it.error_text);
|
|
},
|
|
else => return err,
|
|
}
|
|
break;
|
|
};
|
|
const token = r orelse break;
|
|
if (i != 0) try buffer.append("\n");
|
|
try buffer.append(@tagName(token.id));
|
|
try buffer.append(" = {");
|
|
for (token.bytes) |b| {
|
|
try buffer.appendByte(printable_char_tab[b]);
|
|
}
|
|
try buffer.append("}");
|
|
i += 1;
|
|
}
|
|
const got: []const u8 = buffer.toSlice();
|
|
|
|
if (std.mem.eql(u8, expect, got)) {
|
|
testing.expect(true);
|
|
return;
|
|
}
|
|
|
|
var out = makeOutput(std.fs.File.write, try std.io.getStdErr());
|
|
|
|
try out.write("\n");
|
|
try printSection(&out, "<<<< input", input);
|
|
try printSection(&out, "==== expect", expect);
|
|
try printSection(&out, ">>>> got", got);
|
|
try printRuler(&out);
|
|
|
|
testing.expect(false);
|
|
}
|
|
|
|
fn printSection(out: var, label: []const u8, bytes: []const u8) !void {
|
|
try printLabel(out, label, bytes);
|
|
try hexDump(out, bytes);
|
|
try printRuler(out);
|
|
try out.write(bytes);
|
|
try out.write("\n");
|
|
}
|
|
|
|
fn printLabel(out: var, label: []const u8, bytes: []const u8) !void {
|
|
var buf: [80]u8 = undefined;
|
|
var text = try std.fmt.bufPrint(buf[0..], "{} {} bytes ", label, bytes.len);
|
|
try out.write(text);
|
|
var i: usize = text.len;
|
|
const end = 79;
|
|
while (i < 79) : (i += 1) {
|
|
try out.write([_]u8{label[0]});
|
|
}
|
|
try out.write("\n");
|
|
}
|
|
|
|
fn printRuler(out: var) !void {
|
|
var i: usize = 0;
|
|
const end = 79;
|
|
while (i < 79) : (i += 1) {
|
|
try out.write("-");
|
|
}
|
|
try out.write("\n");
|
|
}
|
|
|
|
fn hexDump(out: var, bytes: []const u8) !void {
|
|
const n16 = bytes.len >> 4;
|
|
var line: usize = 0;
|
|
var offset: usize = 0;
|
|
while (line < n16) : (line += 1) {
|
|
try hexDump16(out, offset, bytes[offset .. offset + 16]);
|
|
offset += 16;
|
|
}
|
|
|
|
const n = bytes.len & 0x0f;
|
|
if (n > 0) {
|
|
try printDecValue(out, offset, 8);
|
|
try out.write(":");
|
|
try out.write(" ");
|
|
var end1 = std.math.min(offset + n, offset + 8);
|
|
for (bytes[offset..end1]) |b| {
|
|
try out.write(" ");
|
|
try printHexValue(out, b, 2);
|
|
}
|
|
var end2 = offset + n;
|
|
if (end2 > end1) {
|
|
try out.write(" ");
|
|
for (bytes[end1..end2]) |b| {
|
|
try out.write(" ");
|
|
try printHexValue(out, b, 2);
|
|
}
|
|
}
|
|
const short = 16 - n;
|
|
var i: usize = 0;
|
|
while (i < short) : (i += 1) {
|
|
try out.write(" ");
|
|
}
|
|
if (end2 > end1) {
|
|
try out.write(" |");
|
|
} else {
|
|
try out.write(" |");
|
|
}
|
|
try printCharValues(out, bytes[offset..end2]);
|
|
try out.write("|\n");
|
|
offset += n;
|
|
}
|
|
|
|
try printDecValue(out, offset, 8);
|
|
try out.write(":");
|
|
try out.write("\n");
|
|
}
|
|
|
|
fn hexDump16(out: var, offset: usize, bytes: []const u8) !void {
|
|
try printDecValue(out, offset, 8);
|
|
try out.write(":");
|
|
try out.write(" ");
|
|
for (bytes[0..8]) |b| {
|
|
try out.write(" ");
|
|
try printHexValue(out, b, 2);
|
|
}
|
|
try out.write(" ");
|
|
for (bytes[8..16]) |b| {
|
|
try out.write(" ");
|
|
try printHexValue(out, b, 2);
|
|
}
|
|
try out.write(" |");
|
|
try printCharValues(out, bytes);
|
|
try out.write("|\n");
|
|
}
|
|
|
|
fn printDecValue(out: var, value: u64, width: u8) !void {
|
|
var buffer: [20]u8 = undefined;
|
|
const len = std.fmt.formatIntBuf(buffer[0..], value, 10, false, width);
|
|
try out.write(buffer[0..len]);
|
|
}
|
|
|
|
fn printHexValue(out: var, value: u64, width: u8) !void {
|
|
var buffer: [16]u8 = undefined;
|
|
const len = std.fmt.formatIntBuf(buffer[0..], value, 16, false, width);
|
|
try out.write(buffer[0..len]);
|
|
}
|
|
|
|
fn printCharValues(out: var, bytes: []const u8) !void {
|
|
for (bytes) |b| {
|
|
try out.write(&[_]u8{printable_char_tab[b]});
|
|
}
|
|
}
|
|
|
|
fn printUnderstandableChar(out: var, char: u8) !void {
|
|
if (!std.ascii.isPrint(char) or char == ' ') {
|
|
std.fmt.format(out.context, anyerror, out.output, "\\x{X:2}", .{char}) catch {};
|
|
} else {
|
|
try out.write("'");
|
|
try out.write(&[_]u8{printable_char_tab[char]});
|
|
try out.write("'");
|
|
}
|
|
}
|
|
|
|
// zig fmt: off
|
|
const printable_char_tab: []const u8 =
|
|
"................................ !\"#$%&'()*+,-./0123456789:;<=>?" ++
|
|
"@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~." ++
|
|
"................................................................" ++
|
|
"................................................................";
|
|
// zig fmt: on
|
|
comptime {
|
|
std.debug.assert(printable_char_tab.len == 256);
|
|
}
|
|
|
|
// Make an output var that wraps a context and output function.
|
|
// output: must be a function that takes a `self` idiom parameter
|
|
// and a bytes parameter
|
|
// context: must be that self
|
|
fn makeOutput(output: var, context: var) Output(@TypeOf(output)) {
|
|
return Output(@TypeOf(output)){
|
|
.output = output,
|
|
.context = context,
|
|
};
|
|
}
|
|
|
|
fn Output(comptime T: type) type {
|
|
const args = switch (@typeInfo(T)) {
|
|
.Fn => |f| f.args,
|
|
else => @compileError("output parameter is not a function"),
|
|
};
|
|
if (args.len != 2) {
|
|
@compileError("output function must take 2 arguments");
|
|
}
|
|
const at0 = args[0].arg_type orelse @compileError("output arg[0] does not have a type");
|
|
const at1 = args[1].arg_type orelse @compileError("output arg[1] does not have a type");
|
|
const arg1p = switch (@typeInfo(at1)) {
|
|
.Pointer => |p| p,
|
|
else => @compileError("output arg[1] is not a slice"),
|
|
};
|
|
if (arg1p.child != u8) @compileError("output arg[1] is not a u8 slice");
|
|
return struct {
|
|
output: T,
|
|
context: at0,
|
|
|
|
fn write(self: *@This(), bytes: []const u8) !void {
|
|
try self.output(self.context, bytes);
|
|
}
|
|
};
|
|
}
|