# Continue Feature - Ready to Use! ✅

## TL;DR

The **continue** command in the MBASIC debugger is **fully implemented and working**!

Press **'c'** at any breakpoint to continue execution until the next breakpoint or program end.

## Quick Start

```bash
# 1. Start the IDE
python3 mbasic --ui curses demo_continue.bas

# 2. Set breakpoints (press 'b' on lines 100, 200, 300)

# 3. Run (Ctrl+R)

# 4. At each breakpoint, press 'c' to continue!
```

## Three Debugger Commands

At any breakpoint, you have three options:

| Key | Command | What Happens |
|-----|---------|--------------|
| **c** | Continue | Run until next breakpoint or end |
| **s** | Step | Execute one line, stop again |
| **e** | End | Stop execution now |

## Example Session

```basic
●10 PRINT "Start"        ← Breakpoint set
 20 FOR I = 1 TO 100
 30   PRINT I
 40 NEXT I
●50 PRINT "End"          ← Breakpoint set
```

**What happens:**
1. Run with Ctrl+R
2. Stops at line 10
3. Press **'c'** → entire loop executes
4. Stops at line 50
5. Press **'c'** → program finishes

## When to Use Each Command

### Continue ('c') - The Workhorse
- **Use when:** Skipping over code sections you trust
- **Best for:** Jumping between checkpoints
- **Example:** "I know the initialization works, jump to the main logic"

### Step ('s') - The Microscope
- **Use when:** Investigating suspicious code
- **Best for:** Watching every line execute
- **Example:** "This loop isn't working right, let me watch it carefully"

### End ('e') - The Emergency Exit
- **Use when:** You've seen enough
- **Best for:** Stopping a long-running test
- **Example:** "Found the bug, no need to finish"

## Try It Now!

### Interactive Test
```bash
./test_continue_manual.sh
```
Guided walkthrough with instructions.

### Demo Program
```bash
python3 mbasic --ui curses demo_continue.bas
```
Shows multi-phase execution with strategic breakpoints.

## Documentation

- **Quick reference**: See `QUICK_REFERENCE.md`
- **Full guide**: See `DEBUGGER_COMMANDS.md`
- **Deep dive**: See `CONTINUE_FEATURE.md`
- **Implementation**: See `CONTINUE_IMPLEMENTATION.md`

## Status

✅ Continue command works
✅ Step command works
✅ End command works
✅ Visual breakpoint markers (●)
✅ Toggle breakpoints with 'b'
✅ Status line shows options
✅ Main screen stays visible
✅ Fully documented
✅ Test programs included

## The Big Picture

```
Debugging Workflow:
┌─────────────────────────────────────────┐
│ 1. Set breakpoints (press 'b')         │
│    ● Important lines marked             │
└──────────────┬──────────────────────────┘
               ↓
┌─────────────────────────────────────────┐
│ 2. Run program (Ctrl+R)                 │
│    Stops at first breakpoint            │
└──────────────┬──────────────────────────┘
               ↓
┌─────────────────────────────────────────┐
│ 3. At breakpoint, choose:               │
│    • 'c' = jump to next breakpoint      │
│    • 's' = step through carefully       │
│    • 'e' = stop now                     │
└──────────────┬──────────────────────────┘
               ↓
┌─────────────────────────────────────────┐
│ 4. Repeat until done!                   │
└─────────────────────────────────────────┘
```

## Pro Tips

💡 **Set strategic breakpoints**: At function starts, loop starts, key decisions

💡 **Use 'c' liberally**: Continue past working code, step only in problem areas

💡 **Combine 'c' and 's'**: Continue to problem area, then step through it

💡 **Watch the output**: Shows what happened between breakpoints

💡 **Press 'e' to restart**: Found your bug? Stop, fix, and run again

## Implementation Highlights

The continue feature leverages:
- **Breakpoint callback system** in interpreter
- **Step mode flag** tracks whether to stop at every line
- **Non-blocking input** reads 'c'/'s'/'e' without blocking execution
- **State management** properly transitions between modes

When you press 'c':
```python
self.step_mode = False      # Only stop at breakpoints
return True                 # Tell interpreter to continue
```

The interpreter then runs normally, only stopping when:
```python
if line_number in self.breakpoints:
    # Hit a breakpoint, call callback again
```

## Success!

The continue feature is complete and ready to use. You now have a powerful debugger with:
- Multiple breakpoint support
- Continue between breakpoints
- Step-by-step execution
- Immediate stop capability

Happy debugging! 🐛🔍
