Method cmdBreak

tools/xsbug-log/xsbug-debugmachine.js:1644–1738

(args)

	}

	cmdBreak(args) {
		if (args.length < 1) {
			// No args: list breakpoints
			this.cmdInfoBreakpoints();
			return;
		}

		// Parse "if <expr>" suffix from args
		let conditionExpr = null;
		const ifIndex = args.indexOf('if');
		if (ifIndex > 0) {
			conditionExpr = args.slice(ifIndex + 1).join(' ');
			args = args.slice(0, ifIndex);
			if (!conditionExpr) {
				this.commandError('Missing expression after "if".');
				return;
			}
		}

		let path, line;
		const spec = args[0];

		if (spec.includes(':')) {
			const lastColon = spec.lastIndexOf(':');
			path = spec.substring(0, lastColon);
			const lineStr = spec.substring(lastColon + 1);
			if (isNaN(parseInt(lineStr))) {
				this.commandError('Invalid line number.');
				return;
			}
			line = parseInt(lineStr);

			// Resolve short filenames against known files
			const resolved = this.resolveFilePath(path, true);
			if (resolved === null) {
				this.showPrompt();
				return;
			}
			path = resolved;
		}
		else if (!isNaN(parseInt(spec))) {
			// Just a line number: use current file
			path = this.currentPath;
			if (!path) {
				this.commandError('No current file. Use "break file:line" or "break function".');
				return;
			}
			if (spec.startsWith('+') || spec.startsWith('-')) {
				if (!this.currentLine) {
					this.commandError('No current line known for relative breakpoint.');
					return;
				}
				line = parseInt(this.currentLine) + parseInt(spec);
			}
			else {
				line = parseInt(spec);
			}
		}