feat: Add array field and multi-line comment support - +3 more APIs!
Implemented two critical parser enhancements that unlock 3 more perfect APIs
and fix issues across multiple headers.
## Features Added
### 1. Array Field Parsing
Support for C array fields in structs:
```c
Uint8 padding[2]; // C
→
padding: [2]u8, // Zig
```
**Implementation (patterns.zig)**:
- Detect array syntax with `[` bracket
- Parse pattern: `Type name[size]`
- Extract base type, field name, and array notation
- Reconstruct as Zig array type: `Type[size]`
**Type Conversion (types.zig)**:
- Handle array types in `convertType()`
- Pattern: `Uint8[2]` → `[2]u8`
- Recursively convert base type
- Reorder to Zig syntax: `[size]BaseType`
### 2. Multi-Line Comment Handling
Fixed enum parsing to skip multi-line `/* ... */` comments:
- Previously only handled `/** ... */` documentation comments
- SDL uses `/* ... */` for macro expansion examples
- Comments were leaking into enum values causing syntax errors
**Before**:
```zig
chromaLocationNone), // Stray ) from comment!
```
**After**:
```zig
chromaLocationNone, // Clean!
```
**Implementation**:
- Changed comment detection from `/**` to `/*`
- Tracks `in_multiline_comment` state
- Skips ALL lines within comment blocks
## Results
### Before
- 19/43 APIs perfect (44%)
- Array fields: NOT SUPPORTED
- Multi-line comments: BROKEN
### After
- **22/43 APIs perfect (51%)** ✅
- Array fields: FULLY SUPPORTED
- Multi-line comments: FIXED
**Progress: +7% (+3 APIs)**
### New Perfect APIs
✅ **SDL_pixels.h** (288 lines)
- Pixel format definitions
- Color management (palettes, colorspaces)
- Had 4 errors: array fields + multi-line comments
- Now perfect!
✅ **SDL_surface.h** (495 lines)
- Surface creation and manipulation
- Largest perfect API so far!
- Had 2 errors: array fields + multi-line comments
- Now perfect!
✅ **SDL_guid.h** (13 lines)
- GUID utilities
- Was 1 error, now perfect!
## Technical Details
### Array Field Parsing Algorithm
1. Detect `[` in field declaration
2. Split at bracket: `Uint8 padding[2]` → before: `Uint8 padding`, array: `[2]`
3. Tokenize before bracket by spaces
4. Last token is field name, rest is type
5. Combine type + array notation: `Uint8[2]`
6. Generate Zig: `padding: [2]u8,`
### Multi-Line Comment Fix
Changed detection in enum scanning from:
```zig
if (std.mem.indexOf(u8, trimmed, "/**")) |_| {
```
To:
```zig
if (std.mem.indexOf(u8, trimmed, "/*")) |_| {
```
This catches ALL multi-line comments, not just doc comments.
## Impact
**Immediate**: +3 perfect APIs (7% improvement)
**Unlocked**: Array fields now work everywhere
**Fixed**: Enum parsing more robust
## Code Changes
### src/patterns.zig (+40 lines)
- `parseStructField()`: Array field detection and parsing
- `scanEnum()`: Fixed multi-line comment detection
- Uses fixed buffers (no allocations) for performance
### src/types.zig (+15 lines)
- `convertType()`: Array type conversion
- Recursive base type conversion
- Reorders to Zig syntax: `[size]Type`
## Testing
Tested against all 43 SDL3 headers:
- 22 compile perfectly (0 errors) ✅
- 21 have 1-13 errors (edge cases)
- 0 complete failures
**Cumulative Progress**:
- Session start: 15 APIs (35%)
- After function pointers: 19 APIs (44%)
- After arrays & comments: **22 APIs (51%)** 🎉
**More than half of SDL3 APIs now generate perfectly!**
## Example Output
**Input** (SDL_pixels.h):
```c
typedef struct SDL_PixelFormatDetails {
SDL_PixelFormat format;
Uint8 bits_per_pixel;
Uint8 bytes_per_pixel;
Uint8 padding[2];
Uint32 Rmask;
...
} SDL_PixelFormatDetails;
```
**Output** (pixels.zig):
```zig
pub const PixelFormatDetails = extern struct {
format: PixelFormat,
bits_per_pixel: u8,
bytes_per_pixel: u8,
padding: [2]u8,
Rmask: u32,
...
};
```
---
Arrays are now fully supported - critical for many SDL structs!
Peterino2
92b497fdba