mirror of
https://github.com/lightpanda-io/browser.git
synced 2026-06-12 01:56:19 -04:00
c4cfd5e363
Allows starting the agent without a provider to use Pandascript commands without an API key. Commands requiring an LLM and --self-heal now explicitly require a provider.
601 lines
20 KiB
Zig
601 lines
20 KiB
Zig
const std = @import("std");
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pub const TypeArgs = struct {
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selector: []const u8,
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value: []const u8,
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};
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pub const ScrollArgs = struct {
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x: i32 = 0,
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y: i32 = 0,
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};
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pub const SelectArgs = struct {
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selector: []const u8,
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value: []const u8,
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};
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pub const CheckArgs = struct {
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selector: []const u8,
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checked: bool,
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};
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pub const Command = union(enum) {
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goto: []const u8,
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click: []const u8,
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type_cmd: TypeArgs,
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wait: []const u8,
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scroll: ScrollArgs,
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hover: []const u8,
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select: SelectArgs,
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check: CheckArgs,
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tree: void,
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markdown: void,
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extract: []const u8,
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eval_js: []const u8,
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login: void,
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accept_cookies: void,
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exit: void,
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comment: void,
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natural_language: []const u8,
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pub fn isRecorded(self: Command) bool {
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return switch (self) {
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.tree, .markdown, .comment, .exit => false,
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.goto, .click, .type_cmd, .wait, .scroll, .hover, .select, .check, .extract, .eval_js, .login, .accept_cookies => true,
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.natural_language => |text| text.len > 0,
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};
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}
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/// True if running this command produces output the user typically wants to
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/// capture (and so should land on stdout). False for action commands whose
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/// only output is an acknowledgment.
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pub fn producesData(self: Command) bool {
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return switch (self) {
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.extract, .eval_js, .markdown, .tree => true,
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else => false,
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};
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}
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/// True if running this command requires an LLM (i.e. an `ai_client` must
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/// be configured). LOGIN and ACCEPT_COOKIES are canned prompts; natural
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/// language is forwarded verbatim to the model. All three are unavailable
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/// in dumb Pandascript-only mode (no `--provider`).
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pub fn needsLlm(self: Command) bool {
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return switch (self) {
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.login, .accept_cookies, .natural_language => true,
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else => false,
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};
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}
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pub fn format(self: Command, writer: *std.Io.Writer) std.Io.Writer.Error!void {
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switch (self) {
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.goto => |url| try writer.print("GOTO {s}", .{url}),
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.click => |sel| try writer.print("CLICK '{s}'", .{sel}),
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.type_cmd => |args| try writer.print("TYPE '{s}' '{s}'", .{ args.selector, args.value }),
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.wait => |sel| try writer.print("WAIT '{s}'", .{sel}),
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.scroll => |args| try writer.print("SCROLL {d} {d}", .{ args.x, args.y }),
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.hover => |sel| try writer.print("HOVER '{s}'", .{sel}),
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.select => |args| try writer.print("SELECT '{s}' '{s}'", .{ args.selector, args.value }),
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.check => |args| if (args.checked)
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try writer.print("CHECK '{s}'", .{args.selector})
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else
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try writer.print("CHECK '{s}' false", .{args.selector}),
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.tree => try writer.writeAll("TREE"),
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.markdown => try writer.writeAll("MARKDOWN"),
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.extract => |selector| try writer.print("EXTRACT '{s}'", .{selector}),
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.eval_js => |script| {
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if (std.mem.indexOfScalar(u8, script, '\n') != null) {
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try writer.print("EVAL '''\n{s}\n'''", .{script});
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} else {
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try writer.print("EVAL '{s}'", .{script});
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}
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},
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.login => try writer.writeAll("LOGIN"),
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.accept_cookies => try writer.writeAll("ACCEPT_COOKIES"),
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.exit => try writer.writeAll("EXIT"),
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.comment => try writer.writeAll("#"),
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.natural_language => |text| try writer.writeAll(text),
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}
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}
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};
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/// Parse a line of REPL input into a Pandascript command.
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/// Unrecognized input is returned as `.natural_language`.
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/// For multi-line EVAL blocks in scripts, use `ScriptParser`.
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pub fn parse(line: []const u8) Command {
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const trimmed = std.mem.trim(u8, line, &std.ascii.whitespace);
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if (trimmed.len == 0) return .{ .natural_language = trimmed };
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if (trimmed[0] == '#') return .{ .comment = {} };
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const cmd_end = std.mem.indexOfAny(u8, trimmed, &std.ascii.whitespace) orelse trimmed.len;
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const cmd_word = trimmed[0..cmd_end];
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const rest = std.mem.trim(u8, trimmed[cmd_end..], &std.ascii.whitespace);
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if (std.ascii.eqlIgnoreCase(cmd_word, "GOTO")) {
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if (rest.len == 0) return .{ .natural_language = trimmed };
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return .{ .goto = rest };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "CLICK")) {
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const arg = extractQuoted(rest) orelse rest;
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if (arg.len == 0) return .{ .natural_language = trimmed };
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return .{ .click = arg };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "TYPE")) {
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const first = extractQuotedWithRemainder(rest) orelse return .{ .natural_language = trimmed };
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const second_arg = std.mem.trim(u8, first.remainder, &std.ascii.whitespace);
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const second = extractQuoted(second_arg) orelse return .{ .natural_language = trimmed };
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return .{ .type_cmd = .{ .selector = first.value, .value = second } };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "WAIT")) {
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const arg = extractQuoted(rest) orelse rest;
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if (arg.len == 0) return .{ .natural_language = trimmed };
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return .{ .wait = arg };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "SCROLL")) {
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// SCROLL → scroll to (0, 0)
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// SCROLL 100 → scroll y=100
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// SCROLL 50 200 → scroll x=50, y=200
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if (rest.len == 0) return .{ .scroll = .{} };
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var it = std.mem.tokenizeAny(u8, rest, &std.ascii.whitespace);
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const first = it.next() orelse return .{ .scroll = .{} };
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const second = it.next();
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if (second) |s| {
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const x = std.fmt.parseInt(i32, first, 10) catch return .{ .natural_language = trimmed };
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const y = std.fmt.parseInt(i32, s, 10) catch return .{ .natural_language = trimmed };
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return .{ .scroll = .{ .x = x, .y = y } };
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}
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const y = std.fmt.parseInt(i32, first, 10) catch return .{ .natural_language = trimmed };
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return .{ .scroll = .{ .x = 0, .y = y } };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "HOVER")) {
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const arg = extractQuoted(rest) orelse rest;
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if (arg.len == 0) return .{ .natural_language = trimmed };
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return .{ .hover = arg };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "SELECT")) {
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const first = extractQuotedWithRemainder(rest) orelse return .{ .natural_language = trimmed };
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const second_arg = std.mem.trim(u8, first.remainder, &std.ascii.whitespace);
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const second = extractQuoted(second_arg) orelse return .{ .natural_language = trimmed };
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return .{ .select = .{ .selector = first.value, .value = second } };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "CHECK")) {
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// CHECK '<sel>' → checked = true
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// CHECK '<sel>' true → checked = true
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// CHECK '<sel>' false → checked = false
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const first = extractQuotedWithRemainder(rest) orelse return .{ .natural_language = trimmed };
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const after = std.mem.trim(u8, first.remainder, &std.ascii.whitespace);
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if (after.len == 0) {
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return .{ .check = .{ .selector = first.value, .checked = true } };
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}
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if (std.ascii.eqlIgnoreCase(after, "true")) {
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return .{ .check = .{ .selector = first.value, .checked = true } };
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}
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if (std.ascii.eqlIgnoreCase(after, "false")) {
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return .{ .check = .{ .selector = first.value, .checked = false } };
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}
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return .{ .natural_language = trimmed };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "TREE")) {
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return .{ .tree = {} };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "MARKDOWN") or std.ascii.eqlIgnoreCase(cmd_word, "MD")) {
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return .{ .markdown = {} };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "EXTRACT")) {
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if (rest.len == 0) return .{ .natural_language = trimmed };
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const selector = extractQuoted(rest) orelse rest;
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return .{ .extract = selector };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "EVAL")) {
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if (rest.len == 0) return .{ .natural_language = trimmed };
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const arg = extractQuoted(rest) orelse rest;
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return .{ .eval_js = arg };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "LOGIN")) {
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return .{ .login = {} };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "ACCEPT_COOKIES") or std.ascii.eqlIgnoreCase(cmd_word, "ACCEPT-COOKIES")) {
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return .{ .accept_cookies = {} };
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}
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if (std.ascii.eqlIgnoreCase(cmd_word, "EXIT")) {
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return .{ .exit = {} };
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}
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return .{ .natural_language = trimmed };
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}
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/// Iterator for parsing a script file, handling multi-line EVAL """ ... """ blocks.
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pub const ScriptIterator = struct {
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lines: std.mem.SplitIterator(u8, .scalar),
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line_num: u32,
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allocator: std.mem.Allocator,
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pub fn init(content: []const u8, allocator: std.mem.Allocator) ScriptIterator {
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return .{
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.lines = std.mem.splitScalar(u8, content, '\n'),
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.line_num = 0,
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.allocator = allocator,
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};
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}
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pub const Entry = struct {
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line_num: u32,
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raw_line: []const u8,
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command: Command,
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};
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/// Returns the next command from the script, or null at EOF.
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/// Multi-line EVAL blocks are assembled into a single eval_js command.
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pub fn next(self: *ScriptIterator) ?Entry {
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while (self.lines.next()) |line| {
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self.line_num += 1;
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const trimmed = std.mem.trim(u8, line, &std.ascii.whitespace);
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if (trimmed.len == 0) continue;
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if (isEvalTripleQuote(trimmed)) {
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const start_line = self.line_num;
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if (self.collectEvalBlock()) |js| {
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return .{
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.line_num = start_line,
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.raw_line = trimmed,
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.command = .{ .eval_js = js },
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};
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} else {
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return .{
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.line_num = start_line,
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.raw_line = trimmed,
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.command = .{ .natural_language = "unterminated EVAL block" },
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};
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}
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}
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return .{
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.line_num = self.line_num,
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.raw_line = trimmed,
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.command = parse(trimmed),
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};
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}
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return null;
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}
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fn isEvalTripleQuote(line: []const u8) bool {
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const cmd_end = std.mem.indexOfAny(u8, line, &std.ascii.whitespace) orelse line.len;
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const cmd_word = line[0..cmd_end];
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if (!std.ascii.eqlIgnoreCase(cmd_word, "EVAL")) return false;
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const rest = std.mem.trim(u8, line[cmd_end..], &std.ascii.whitespace);
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return std.mem.startsWith(u8, rest, "\"\"\"") or std.mem.startsWith(u8, rest, "'''");
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}
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/// Collect lines until closing triple quote (""" or '''), return the JS content.
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fn collectEvalBlock(self: *ScriptIterator) ?[]const u8 {
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var parts: std.ArrayListUnmanaged(u8) = .empty;
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while (self.lines.next()) |line| {
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self.line_num += 1;
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const trimmed = std.mem.trim(u8, line, &std.ascii.whitespace);
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if (std.mem.eql(u8, trimmed, "\"\"\"") or std.mem.eql(u8, trimmed, "'''")) {
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return parts.toOwnedSlice(self.allocator) catch null;
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}
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if (parts.items.len > 0) {
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parts.append(self.allocator, '\n') catch return null;
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}
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parts.appendSlice(self.allocator, line) catch return null;
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}
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// Unterminated
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parts.deinit(self.allocator);
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return null;
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}
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};
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const QuotedResult = struct {
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value: []const u8,
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remainder: []const u8,
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};
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fn extractQuotedWithRemainder(s: []const u8) ?QuotedResult {
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if (s.len < 2) return null;
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const quote = s[0];
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if (quote != '"' and quote != '\'') return null;
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const end = std.mem.indexOfScalarPos(u8, s, 1, quote) orelse return null;
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return .{
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.value = s[1..end],
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.remainder = s[end + 1 ..],
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};
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}
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fn extractQuoted(s: []const u8) ?[]const u8 {
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const result = extractQuotedWithRemainder(s) orelse return null;
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return result.value;
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}
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// --- Tests ---
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test "parse GOTO" {
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const cmd = parse("GOTO https://example.com");
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try std.testing.expectEqualStrings("https://example.com", cmd.goto);
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}
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test "parse GOTO case insensitive" {
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const cmd = parse("goto https://example.com");
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try std.testing.expectEqualStrings("https://example.com", cmd.goto);
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}
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test "parse GOTO missing url" {
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const cmd = parse("GOTO");
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try std.testing.expect(cmd == .natural_language);
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}
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test "parse CLICK quoted" {
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const cmd = parse("CLICK \"Login\"");
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try std.testing.expectEqualStrings("Login", cmd.click);
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}
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test "parse CLICK unquoted" {
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const cmd = parse("CLICK .submit-btn");
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try std.testing.expectEqualStrings(".submit-btn", cmd.click);
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}
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test "parse TYPE two quoted args" {
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const cmd = parse("TYPE \"#email\" \"user@test.com\"");
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try std.testing.expectEqualStrings("#email", cmd.type_cmd.selector);
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try std.testing.expectEqualStrings("user@test.com", cmd.type_cmd.value);
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}
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test "parse TYPE single-quoted with inner double quotes" {
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const cmd = parse("TYPE 'input[name=\"acct\"]' '$LP_USERNAME'");
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try std.testing.expectEqualStrings("input[name=\"acct\"]", cmd.type_cmd.selector);
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try std.testing.expectEqualStrings("$LP_USERNAME", cmd.type_cmd.value);
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}
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test "parse CLICK single-quoted" {
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const cmd = parse("CLICK 'a[href*=\"login\"]'");
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try std.testing.expectEqualStrings("a[href*=\"login\"]", cmd.click);
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}
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test "parse TYPE missing second arg" {
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const cmd = parse("TYPE \"#email\"");
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try std.testing.expect(cmd == .natural_language);
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}
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test "parse WAIT" {
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const cmd = parse("WAIT \".dashboard\"");
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try std.testing.expectEqualStrings(".dashboard", cmd.wait);
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}
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test "parse SCROLL bare" {
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const cmd = parse("SCROLL");
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try std.testing.expectEqual(@as(i32, 0), cmd.scroll.x);
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try std.testing.expectEqual(@as(i32, 0), cmd.scroll.y);
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}
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test "parse SCROLL single arg is y" {
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const cmd = parse("SCROLL 500");
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try std.testing.expectEqual(@as(i32, 0), cmd.scroll.x);
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try std.testing.expectEqual(@as(i32, 500), cmd.scroll.y);
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}
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test "parse SCROLL two args" {
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const cmd = parse("SCROLL 100 200");
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try std.testing.expectEqual(@as(i32, 100), cmd.scroll.x);
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try std.testing.expectEqual(@as(i32, 200), cmd.scroll.y);
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}
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test "parse SCROLL invalid falls through" {
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const cmd = parse("SCROLL down");
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try std.testing.expect(cmd == .natural_language);
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}
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test "parse HOVER" {
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const cmd = parse("HOVER '#menu'");
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try std.testing.expectEqualStrings("#menu", cmd.hover);
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}
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test "parse HOVER missing selector" {
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const cmd = parse("HOVER");
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try std.testing.expect(cmd == .natural_language);
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}
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test "parse SELECT two args" {
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const cmd = parse("SELECT '#country' 'France'");
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try std.testing.expectEqualStrings("#country", cmd.select.selector);
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try std.testing.expectEqualStrings("France", cmd.select.value);
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}
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test "parse SELECT missing value" {
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const cmd = parse("SELECT '#country'");
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try std.testing.expect(cmd == .natural_language);
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}
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test "parse CHECK default true" {
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const cmd = parse("CHECK '#agree'");
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try std.testing.expectEqualStrings("#agree", cmd.check.selector);
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try std.testing.expectEqual(true, cmd.check.checked);
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}
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test "parse CHECK explicit true" {
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const cmd = parse("CHECK '#agree' true");
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try std.testing.expectEqual(true, cmd.check.checked);
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}
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test "parse CHECK explicit false" {
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const cmd = parse("CHECK '#newsletter' false");
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try std.testing.expectEqualStrings("#newsletter", cmd.check.selector);
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try std.testing.expectEqual(false, cmd.check.checked);
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}
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test "parse CHECK invalid bool falls through" {
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const cmd = parse("CHECK '#x' maybe");
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try std.testing.expect(cmd == .natural_language);
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}
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test "parse TREE" {
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const cmd = parse("TREE");
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try std.testing.expect(cmd == .tree);
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}
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test "parse MARKDOWN alias MD" {
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try std.testing.expect(parse("MARKDOWN") == .markdown);
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try std.testing.expect(parse("md") == .markdown);
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}
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test "parse EXTRACT" {
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const cmd = parse("EXTRACT \".title\"");
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try std.testing.expectEqualStrings(".title", cmd.extract);
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}
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test "parse EVAL single line" {
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const cmd = parse("EVAL \"document.title\"");
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try std.testing.expectEqualStrings("document.title", cmd.eval_js);
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}
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|
|
|
test "parse LOGIN" {
|
|
try std.testing.expect(parse("LOGIN") == .login);
|
|
try std.testing.expect(parse("login") == .login);
|
|
}
|
|
|
|
test "parse ACCEPT_COOKIES" {
|
|
try std.testing.expect(parse("ACCEPT_COOKIES") == .accept_cookies);
|
|
try std.testing.expect(parse("ACCEPT-COOKIES") == .accept_cookies);
|
|
}
|
|
|
|
test "parse EXIT" {
|
|
try std.testing.expect(parse("EXIT") == .exit);
|
|
}
|
|
|
|
test "parse comment" {
|
|
try std.testing.expect(parse("# this is a comment") == .comment);
|
|
try std.testing.expect(parse("# INTENT: LOGIN") == .comment);
|
|
}
|
|
|
|
test "parse natural language fallback" {
|
|
const cmd = parse("what is on this page?");
|
|
try std.testing.expectEqualStrings("what is on this page?", cmd.natural_language);
|
|
}
|
|
|
|
test "parse whitespace trimming" {
|
|
const cmd = parse(" GOTO https://example.com ");
|
|
try std.testing.expectEqualStrings("https://example.com", cmd.goto);
|
|
}
|
|
|
|
test "parse empty input" {
|
|
const cmd = parse("");
|
|
try std.testing.expect(cmd == .natural_language);
|
|
}
|
|
|
|
test "isRecorded" {
|
|
try std.testing.expect(parse("GOTO https://example.com").isRecorded());
|
|
try std.testing.expect(parse("CLICK \"btn\"").isRecorded());
|
|
try std.testing.expect(parse("TYPE \"sel\" \"val\"").isRecorded());
|
|
try std.testing.expect(parse("WAIT \".x\"").isRecorded());
|
|
try std.testing.expect(parse("SCROLL 0 200").isRecorded());
|
|
try std.testing.expect(parse("HOVER '#menu'").isRecorded());
|
|
try std.testing.expect(parse("SELECT '#sel' 'a'").isRecorded());
|
|
try std.testing.expect(parse("CHECK '#chk'").isRecorded());
|
|
try std.testing.expect(parse("CHECK '#chk' false").isRecorded());
|
|
try std.testing.expect(parse("EXTRACT \".title\"").isRecorded());
|
|
try std.testing.expect(parse("EVAL \"1+1\"").isRecorded());
|
|
try std.testing.expect(!parse("TREE").isRecorded());
|
|
try std.testing.expect(!parse("MARKDOWN").isRecorded());
|
|
try std.testing.expect(!parse("md").isRecorded());
|
|
}
|
|
|
|
test "ScriptIterator basic commands" {
|
|
const script =
|
|
\\GOTO https://example.com
|
|
\\TREE
|
|
\\CLICK "Login"
|
|
;
|
|
var iter = ScriptIterator.init(script, std.testing.allocator);
|
|
|
|
const e1 = iter.next().?;
|
|
try std.testing.expectEqualStrings("https://example.com", e1.command.goto);
|
|
try std.testing.expectEqual(@as(u32, 1), e1.line_num);
|
|
|
|
const e2 = iter.next().?;
|
|
try std.testing.expect(e2.command == .tree);
|
|
|
|
const e3 = iter.next().?;
|
|
try std.testing.expectEqualStrings("Login", e3.command.click);
|
|
|
|
try std.testing.expect(iter.next() == null);
|
|
}
|
|
|
|
test "ScriptIterator skips blank lines and comments" {
|
|
const script =
|
|
\\# Navigate
|
|
\\GOTO https://example.com
|
|
\\
|
|
\\# Extract
|
|
\\TREE
|
|
;
|
|
var iter = ScriptIterator.init(script, std.testing.allocator);
|
|
|
|
const e1 = iter.next().?;
|
|
try std.testing.expect(e1.command == .comment);
|
|
|
|
const e2 = iter.next().?;
|
|
try std.testing.expect(e2.command == .goto);
|
|
|
|
const e3 = iter.next().?;
|
|
try std.testing.expect(e3.command == .comment);
|
|
|
|
const e4 = iter.next().?;
|
|
try std.testing.expect(e4.command == .tree);
|
|
|
|
try std.testing.expect(iter.next() == null);
|
|
}
|
|
|
|
test "ScriptIterator multi-line EVAL" {
|
|
const script =
|
|
\\GOTO https://example.com
|
|
\\EVAL """
|
|
\\ const x = 1;
|
|
\\ const y = 2;
|
|
\\ return x + y;
|
|
\\"""
|
|
\\TREE
|
|
;
|
|
var iter = ScriptIterator.init(script, std.testing.allocator);
|
|
|
|
const e1 = iter.next().?;
|
|
try std.testing.expect(e1.command == .goto);
|
|
|
|
const e2 = iter.next().?;
|
|
try std.testing.expect(e2.command == .eval_js);
|
|
try std.testing.expect(std.mem.indexOf(u8, e2.command.eval_js, "const x = 1;") != null);
|
|
try std.testing.expect(std.mem.indexOf(u8, e2.command.eval_js, "return x + y;") != null);
|
|
defer std.testing.allocator.free(e2.command.eval_js);
|
|
|
|
const e3 = iter.next().?;
|
|
try std.testing.expect(e3.command == .tree);
|
|
|
|
try std.testing.expect(iter.next() == null);
|
|
}
|
|
|
|
test "ScriptIterator unterminated EVAL" {
|
|
const script =
|
|
\\EVAL """
|
|
\\ const x = 1;
|
|
;
|
|
var iter = ScriptIterator.init(script, std.testing.allocator);
|
|
|
|
const e1 = iter.next().?;
|
|
try std.testing.expect(e1.command == .natural_language);
|
|
try std.testing.expectEqualStrings("unterminated EVAL block", e1.command.natural_language);
|
|
}
|