mech_core/program/compiler/
sections.rs

1use crate::*;
2use super::*;
3
4// Byetecode Compiler
5// ============================================================================
6
7// Format:
8// 1. Header
9// 2. Features
10// 3. Types
11// 4. Constants
12// 5. Symbols
13// 6. Instructions
14// 7. Dictionary
15
16// 1. Header
17// ----------------------------------------------------------------------------
18
19#[repr(C)]
20#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
21#[derive(Debug, Clone, Eq, PartialEq)]
22pub struct ByteCodeHeader {
23  pub magic:        [u8; 4],   // e.g., b"MECH"
24  pub version:        u8,      // bytecode format version
25  pub mech_ver:       u16,     // Mech language version
26  pub flags:          u16,     // reserved/feature bit
27  pub reg_count:      u32,     // total virtual registers used
28  pub instr_count:    u32,     // number of instructions
29  
30  pub feature_count:  u32,     // number of feature flags  
31  pub feature_off:    u64,     // offset to feature flags (array of u64)
32
33  pub types_count:    u32,     // number of types
34  pub types_off:      u64,     // offset to type section
35
36  pub const_count:    u32,     // number of constants (entries
37  pub const_tbl_off:  u64,     // offset to constant table (array of entries)
38  pub const_tbl_len:  u64,     // bytes in constant table area (entries only)
39  pub const_blob_off: u64,     // offset to raw constant blob data
40  pub const_blob_len: u64,     // bytes in blob (payloads
41
42  pub symbols_len:    u64,     // number of symbols
43  pub symbols_off:    u64,     // offset to symbol section
44                               
45  pub instr_off:      u64,     // offset to instruction stream
46  pub instr_len:      u64,     // bytes of instruction stream
47
48  pub dict_off:       u64,     // offset to dictionary
49  pub dict_len:       u64,     // bytes in dictionary
50
51  pub reserved:       u32,     // pad/alignment
52}
53
54impl ByteCodeHeader {
55  // Header byte size when serialized. This is the number of bytes `write_to` will write.
56  // (Computed from the sum of sizes of each field written in little-endian.)
57  pub const HEADER_SIZE: usize = 4  // magic
58    + 1   // version
59    + 2   // mech_ver
60    + 2   // flags
61    + 4   // reg_count
62    + 4   // instr_count
63    + 4   // feature_count
64    + 8   // feature_off
65    + 4   // types_count
66    + 8   // types_off
67    + 4   // const_count
68    + 8   // const_tbl_off
69    + 8   // const_tbl_len
70    + 8   // const_blob_off
71    + 8   // const_blob_len
72    + 8   // symbols_len
73    + 8   // symbosl_off
74    + 8   // instr_off
75    + 8   // instr_len
76    + 8   // dict_off
77    + 8   // dict_len
78    + 4;  // reserved
79
80  // Serialize header using little-endian encoding.
81  pub fn write_to(&self, w: &mut impl Write) -> MResult<()> {
82    // magic (4 bytes)
83    w.write_all(&self.magic)?;
84
85    // small fields
86    w.write_u8(self.version)?;
87    w.write_u16::<LittleEndian>(self.mech_ver)?;
88    w.write_u16::<LittleEndian>(self.flags)?;
89
90    // counts
91    w.write_u32::<LittleEndian>(self.reg_count)?;
92    w.write_u32::<LittleEndian>(self.instr_count)?;
93
94    // features (count + offset)
95    w.write_u32::<LittleEndian>(self.feature_count)?;
96    w.write_u64::<LittleEndian>(self.feature_off)?;
97
98    // types
99    w.write_u32::<LittleEndian>(self.types_count)?;
100    w.write_u64::<LittleEndian>(self.types_off)?;
101
102    // constants table / blob
103    w.write_u32::<LittleEndian>(self.const_count)?;
104    w.write_u64::<LittleEndian>(self.const_tbl_off)?;
105    w.write_u64::<LittleEndian>(self.const_tbl_len)?;
106    w.write_u64::<LittleEndian>(self.const_blob_off)?;
107    w.write_u64::<LittleEndian>(self.const_blob_len)?;
108
109    // symbols
110    w.write_u64::<LittleEndian>(self.symbols_len)?;
111    w.write_u64::<LittleEndian>(self.symbols_off)?;
112
113    // instructions
114    w.write_u64::<LittleEndian>(self.instr_off)?;
115    w.write_u64::<LittleEndian>(self.instr_len)?;
116
117    // dictionary
118    w.write_u64::<LittleEndian>(self.dict_off)?;
119    w.write_u64::<LittleEndian>(self.dict_len)?;
120
121    // footer
122    w.write_u32::<LittleEndian>(self.reserved)?;
123    Ok(())
124  }
125
126  // Read a header. Expects the same layout as `write_to`.
127  pub fn read_from(r: &mut impl Read) -> MResult<Self> {
128    let mut magic = [0u8; 4];
129    r.read_exact(&mut magic)?;
130
131    let version = r.read_u8()?;
132    let mech_ver = r.read_u16::<LittleEndian>()?;
133    let flags = r.read_u16::<LittleEndian>()?;
134
135    let reg_count = r.read_u32::<LittleEndian>()?;
136    let instr_count = r.read_u32::<LittleEndian>()?;
137
138    let feature_count = r.read_u32::<LittleEndian>()?;
139    let feature_off = r.read_u64::<LittleEndian>()?;
140
141    let types_count = r.read_u32::<LittleEndian>()?;
142    let types_off = r.read_u64::<LittleEndian>()?;
143
144    let const_count = r.read_u32::<LittleEndian>()?;
145    let const_tbl_off = r.read_u64::<LittleEndian>()?;
146    let const_tbl_len = r.read_u64::<LittleEndian>()?;
147    let const_blob_off = r.read_u64::<LittleEndian>()?;
148    let const_blob_len = r.read_u64::<LittleEndian>()?;
149
150    let symbols_len = r.read_u64::<LittleEndian>()?;
151    let symbols_off = r.read_u64::<LittleEndian>()?;
152
153    let instr_off = r.read_u64::<LittleEndian>()?;
154    let instr_len = r.read_u64::<LittleEndian>()?;
155
156    let dict_off = r.read_u64::<LittleEndian>()?;
157    let dict_len = r.read_u64::<LittleEndian>()?;
158
159    let reserved = r.read_u32::<LittleEndian>()?;
160
161    Ok(Self {
162      magic,
163      version,
164      mech_ver,
165      flags,
166      reg_count,
167      instr_count,
168      feature_count,
169      feature_off,
170      types_count,
171      types_off,
172      const_count,
173      const_tbl_off,
174      const_tbl_len,
175      const_blob_off,
176      const_blob_len,
177      instr_off,
178      instr_len,
179      symbols_len,
180      symbols_off,
181      dict_off,
182      dict_len,
183      reserved,
184    })
185  }
186
187  // Quick check: does the header magic match the expected magic?
188  pub fn validate_magic(&self, expected: &[u8;4]) -> bool {
189    &self.magic == expected
190  }
191}
192
193// 2. Features
194// ----------------------------------------------------------------------------
195
196#[repr(u16)]
197#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
198pub enum FeatureKind {
199  I8=1, I16, I32, I64, I128,
200  U8, U16, U32, U64, U128,
201
202  F32, F64, C64, R64, Index,
203  String, Bool, Atom, Set, Map, 
204  
205  Table, Tuple, Record, Enum,
206  VariableDefine, VariableAssign, KindDefine,
207  KindAnnotation, SubscriptRange, SubscriptFormula,
208  
209  RangeInclusive, RangeExclusive,
210  DotIndexing, Swizzle, LogicalIndexing,
211  Matrix1, Matrix2, Matrix3, Matrix4, Matrix2x3, 
212  
213  Matrix3x2, RowVector2, RowVector3, RowVector4,
214  Vector2, Vector3, Vector4, VectorD, MatrixD, RowVectorD,
215  
216  HorzCat, VertCat,
217  Compiler, PrettyPrint, Serde,
218  MatMul, Transpose, Dot, Cross, Add, 
219  
220  Sub, Mul, Div, Exp, Mod, 
221  Neg, OpAssign, LT, LTE, GT, 
222  
223  GTE, EQ, NEQ, And, Or, 
224  Xor, Not, Convert, Assign, Access,
225  
226  Functions, Formulas,
227  Custom = 0xFFFF,
228}
229
230impl FeatureKind {
231
232  pub fn as_string(&self) -> String {
233    match self {
234      FeatureKind::I8 => "i8".to_string(),
235      FeatureKind::I16 => "i16".to_string(),
236      FeatureKind::I32 => "i32".to_string(),
237      FeatureKind::I64 => "i64".to_string(),
238      FeatureKind::I128 => "i128".to_string(),
239      FeatureKind::U8 => "u8".to_string(),
240      FeatureKind::U16 => "u16".to_string(),
241      FeatureKind::U32 => "u32".to_string(),
242      FeatureKind::U64 => "u64".to_string(),
243      FeatureKind::U128 => "u128".to_string(),
244      FeatureKind::F32 => "f32".to_string(),
245      FeatureKind::F64 => "f64".to_string(),
246      FeatureKind::C64 => "c64".to_string(),
247      FeatureKind::R64 => "r64".to_string(),
248      FeatureKind::Index => "index".to_string(),
249      FeatureKind::String => "string".to_string(),
250      FeatureKind::Bool => "bool".to_string(),
251      FeatureKind::Atom => "atom".to_string(),
252      FeatureKind::Set => "set".to_string(),
253      FeatureKind::Map => "map".to_string(),
254      FeatureKind::Table => "table".to_string(),
255      FeatureKind::Tuple => "tuple".to_string(),
256      FeatureKind::Record => "record".to_string(),
257      FeatureKind::Enum => "enum".to_string(),
258      FeatureKind::VariableDefine => "variable_define".to_string(),
259      FeatureKind::VariableAssign => "variable_assign".to_string(),
260      FeatureKind::KindDefine => "kind_define".to_string(),
261      FeatureKind::KindAnnotation => "kind_annotation".to_string(),
262      FeatureKind::SubscriptRange => "subscript_range".to_string(),
263      FeatureKind::SubscriptFormula => "subscript_formula".to_string(),
264      FeatureKind::RangeInclusive => "range_inclusive".to_string(),
265      FeatureKind::RangeExclusive => "range_exclusive".to_string(),
266      FeatureKind::DotIndexing => "dot_indexing".to_string(),
267      FeatureKind::Swizzle => "swizzle".to_string(),
268      FeatureKind::LogicalIndexing => "logical_indexing".to_string(),
269      FeatureKind::Matrix1 => "matrix1".to_string(),
270      FeatureKind::Matrix2 => "matrix2".to_string(),
271      FeatureKind::Matrix3 => "matrix3".to_string(),
272      FeatureKind::Matrix4 => "matrix4".to_string(),
273      FeatureKind::Matrix2x3 => "matrix2x3".to_string(),
274      FeatureKind::Matrix3x2 => "matrix3x2".to_string(),
275      FeatureKind::RowVector2 => "row_vector2".to_string(),
276      FeatureKind::RowVector3 => "row_vector3".to_string(),
277      FeatureKind::RowVector4 => "row_vector4".to_string(),
278      FeatureKind::Vector2 => "vector2".to_string(),
279      FeatureKind::Vector3 => "vector3".to_string(),
280      FeatureKind::Vector4 => "vector4".to_string(),
281      FeatureKind::VectorD => "vectord".to_string(),
282      FeatureKind::MatrixD => "matrixd".to_string(),
283      FeatureKind::RowVectorD => "row_vectord".to_string(),
284      FeatureKind::HorzCat => "matrix_horzcat".to_string(),
285      FeatureKind::VertCat => "matrix_vertcat".to_string(),
286      FeatureKind::Compiler => "compiler".to_string(),
287      FeatureKind::PrettyPrint => "pretty_print".to_string(),
288      FeatureKind::Serde => "serde".to_string(),
289      FeatureKind::MatMul => "matrix_matmul".to_string(),
290      FeatureKind::Transpose => "matrix_transpose".to_string(),
291      FeatureKind::Dot => "matrix_dot".to_string(),
292      FeatureKind::Cross => "matrix_cross".to_string(),
293      FeatureKind::Add => "math_add".to_string(),
294      FeatureKind::Sub => "math_sub".to_string(),
295      FeatureKind::Mul => "math_mul".to_string(),
296      FeatureKind::Div => "math_div".to_string(),
297      FeatureKind::Exp => "math_exp".to_string(),
298      FeatureKind::Mod => "math_mod".to_string(),
299      FeatureKind::Neg => "math_neg".to_string(),
300      FeatureKind::OpAssign => "math_opassign".to_string(),
301      FeatureKind::LT => "compare_lt".to_string(),
302      FeatureKind::LTE => "compare_lte".to_string(),
303      FeatureKind::GT => "compare_gt".to_string(),
304      FeatureKind::GTE => "compare_gte".to_string(),
305      FeatureKind::EQ => "compare_eq".to_string(),
306      FeatureKind::NEQ => "compare_neq".to_string(),
307      FeatureKind::And => "logic_and".to_string(),
308      FeatureKind::Or => "logic_or".to_string(),
309      FeatureKind::Xor => "logic_xor".to_string(),
310      FeatureKind::Not => "logic_not".to_string(),
311      FeatureKind::Convert => "convert".to_string(),
312      FeatureKind::Assign => "assign".to_string(),
313      FeatureKind::Access => "access".to_string(),
314      FeatureKind::Functions => "functions".to_string(),
315      FeatureKind::Formulas => "formulas".to_string(),
316      FeatureKind::Custom => "custom".to_string(),
317    }
318  }
319}
320
321#[derive(Debug, Clone, PartialEq, Eq, Hash)]
322pub enum FeatureFlag {
323  Builtin(FeatureKind),
324  Custom(u64),
325}
326
327impl FeatureFlag {
328
329  pub fn as_string(&self) -> String {
330    match self {
331      FeatureFlag::Builtin(f) => f.as_string(),
332      FeatureFlag::Custom(c) => format!("custom({})", c),
333    }
334  }
335}
336
337impl FeatureFlag {
338  pub fn as_u64(&self) -> u64 {
339    match self {
340      FeatureFlag::Builtin(f) => *f as u64,
341      FeatureFlag::Custom(c) => *c,
342    }
343  }
344}
345
346// 3. Type Section
347// ----------------------------------------------------------------------------
348
349#[repr(u16)]
350#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
351#[derive(Debug, Clone, Copy, Eq, PartialEq)]
352pub enum TypeTag {
353  U8=1, U16, U32, U64, U128, I8, I16, I32, I64, I128,
354  F32, F64, C64, R64, String, Bool, Id, Index, Empty, Any,
355  MatrixU8, MatrixU16, MatrixU32, MatrixU64, MatrixU128,
356  MatrixI8, MatrixI16, MatrixI32, MatrixI64, MatrixI128,
357  MatrixF32, MatrixF64, MatrixC64, MatrixR64, MatrixBool, 
358  MatrixString, MatrixIndex,
359  EnumTag, Record, Map, Atom, 
360  Table, Tuple, Reference, Set, OptionT,
361}
362
363impl TypeTag {
364  pub fn from_u16(tag: u16) -> Option<Self> {
365    match tag {
366      1 => Some(TypeTag::U8), 2 => Some(TypeTag::U16), 3 => Some(TypeTag::U32), 4 => Some(TypeTag::U64), 5 => Some(TypeTag::U128),
367      6 => Some(TypeTag::I8), 7 => Some(TypeTag::I16), 8 => Some(TypeTag::I32), 9 => Some(TypeTag::I64), 10 => Some(TypeTag::I128),
368      11 => Some(TypeTag::F32), 12 => Some(TypeTag::F64), 13 => Some(TypeTag::C64), 14 => Some(TypeTag::R64),
369      15 => Some(TypeTag::String), 16 => Some(TypeTag::Bool), 17 => Some(TypeTag::Id), 18 => Some(TypeTag::Index), 19 => Some(TypeTag::Empty), 20 => Some(TypeTag::Any),
370      21 => Some(TypeTag::MatrixU8), 22 => Some(TypeTag::MatrixU16), 23 => Some(TypeTag::MatrixU32), 24 => Some(TypeTag::MatrixU64), 25 => Some(TypeTag::MatrixU128),
371      26 => Some(TypeTag::MatrixI8), 27 => Some(TypeTag::MatrixI16), 28 => Some(TypeTag::MatrixI32), 29 => Some(TypeTag::MatrixI64), 30 => Some(TypeTag::MatrixI128),
372      31 => Some(TypeTag::MatrixF32), 32 => Some(TypeTag::MatrixF64), 33 => Some(TypeTag::MatrixC64), 34 => Some(TypeTag::MatrixR64), 35 => Some(TypeTag::MatrixBool), 
373      36 => Some(TypeTag::MatrixString), 37 => Some(TypeTag::MatrixIndex),
374      38 => Some(TypeTag::EnumTag), 39 => Some(TypeTag::Record), 40 => Some(TypeTag::Map), 41 => Some(TypeTag::Atom), 
375      42 => Some(TypeTag::Table), 43 => Some(TypeTag::Tuple), 44 => Some(TypeTag::Reference), 45 => Some(TypeTag::Set), 46 => Some(TypeTag::OptionT),
376      _ => None,
377    }
378  }
379}
380
381#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
382#[derive(Debug, Clone, Eq, PartialEq)]
383pub struct TypeEntry {
384  pub tag: TypeTag,
385  pub bytes: Vec<u8>,
386}
387impl TypeEntry {
388  pub fn byte_len(&self) -> u64 {
389    2 + self.bytes.len() as u64
390  }
391}
392
393pub type TypeId = u32;
394
395#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
396#[derive(Default, Debug, Clone, Eq, PartialEq)]
397pub struct TypeSection {
398  pub interner: HashMap<ValueKind, TypeId>,
399  pub entries:  Vec<TypeEntry>, // index is TypeId
400}
401    
402impl TypeSection {
403
404  pub fn new() -> Self {
405    Self { interner: HashMap::new(), entries: Vec::new() }
406  }
407
408  pub fn get_or_intern(&mut self, vk: &ValueKind) -> TypeId {
409    if let Some(id) = self.interner.get(vk) { return *id; }
410    // recursively intern children and build payload
411    let (tag, mut bytes) = encode_value_kind(self, vk);
412    let id = self.entries.len() as u32;
413    self.entries.push(TypeEntry { tag, bytes });
414    self.interner.insert(vk.clone(), id);
415    id
416  }
417
418  pub fn write_to(&self, w: &mut impl Write) -> MResult<()> {
419    w.write_u32::<LittleEndian>(self.entries.len() as u32)?;
420    for e in &self.entries {
421      w.write_u16::<LittleEndian>(e.tag as u16)?;
422      w.write_u16::<LittleEndian>(0)?;
423      w.write_u32::<LittleEndian>(1)?;
424      w.write_u32::<LittleEndian>(e.bytes.len() as u32)?;
425      w.write_all(&e.bytes)?;
426    }
427    Ok(())
428  }
429
430  pub fn byte_len(&self) -> u64 {
431    4 + self.entries.iter().map(|e| 12 + e.bytes.len() as u64).sum::<u64>()
432  }
433}
434
435// 4. Constants
436// ----------------------------------------------------------------------------
437
438#[repr(u8)]
439#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
440#[derive(Debug, Clone, Copy, Eq, PartialEq)]
441pub enum ConstEncoding { 
442  Inline = 1 
443}
444
445#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
446#[derive(Debug, Clone, Eq, PartialEq)]
447pub struct ConstEntry {
448  pub type_id: u32,
449  pub enc:     ConstEncoding,
450  pub align:   u8,
451  pub flags:   u8,
452  pub reserved:u16,
453  pub offset:  u64,
454  pub length:  u64,
455}
456
457impl ConstEntry {
458  pub fn write_to(&self, w: &mut impl Write) -> MResult<()> {
459    w.write_u32::<LittleEndian>(self.type_id)?;
460    w.write_u8(self.enc as u8)?;
461    w.write_u8(self.align)?;
462    w.write_u8(self.flags)?;
463    w.write_u8(0)?; // pad to 4 bytes for the small fields
464    w.write_u64::<LittleEndian>(self.offset)?;
465    w.write_u64::<LittleEndian>(self.length)?;
466    Ok(())
467  }
468  pub fn byte_len() -> u64 { 4 + 1 + 1 + 1 + 1 + 8 + 8 } // = 24 bytes
469}
470
471// 5. Symbol Table
472// ----------------------------------------------------------------------------
473
474pub struct SymbolEntry {
475  pub id: u64,          // unique identifier for the symbol
476  pub mutable: bool,
477  pub reg: Register,    // register index this symbol maps to
478}
479
480impl SymbolEntry {
481
482  pub fn new(id: u64, mutable: bool, reg: Register) -> Self {
483    Self { id, mutable, reg }
484  }
485
486  pub fn write_to(&self, w: &mut impl Write) -> MResult<()> {
487    w.write_u64::<LittleEndian>(self.id)?;
488    w.write_u8(if self.mutable { 1 } else { 0 })?;
489    w.write_u32::<LittleEndian>(self.reg)?;
490    Ok(())
491  }
492}
493
494// 6. Instruction Encoding (fixed forms)
495// ----------------------------------------------------------------------------
496
497#[repr(u8)]
498#[derive(Debug, Clone, Copy, PartialEq, Eq)]
499pub enum OpCode {
500  ConstLoad = 0x01,
501  NullOp    = 0x10,
502  Unop      = 0x20,
503  Binop     = 0x30,
504  Ternop    = 0x40,
505  Quadop    = 0x50,
506  VarArg    = 0x60,
507  Return    = 0xFF,
508}
509
510impl OpCode {
511  pub fn from_u8(num: u8) -> Option<OpCode> {
512    match num {
513      0x01 => Some(OpCode::ConstLoad),
514      0x10 => Some(OpCode::NullOp),
515      0x20 => Some(OpCode::Unop),
516      0x30 => Some(OpCode::Binop),
517      0x40 => Some(OpCode::Ternop),
518      0x50 => Some(OpCode::Quadop),
519      0x60 => Some(OpCode::VarArg),
520      0xFF => Some(OpCode::Return),
521      _    => None,
522    }
523  }
524}
525
526#[derive(Debug, Clone)]
527pub enum EncodedInstr {
528  ConstLoad { dst: u32, const_id: u32 },                               // [u64 opcode][u32 dst][u32 const_id]
529  NullOp    { fxn_id: u64, dst: u32 },                                 // [u64 opcode][u64 fxn_id][u32 dst]
530  UnOp      { fxn_id: u64, dst: u32, src: u32 },                       // [u64 opcode][u32 dst][u32 src]
531  BinOp     { fxn_id: u64, dst: u32, lhs: u32, rhs: u32 },             // [u64 opcode][u32 dst][u32 lhs][u32 rhs]
532  TernOp    { fxn_id: u64, dst: u32, a: u32, b: u32, c: u32 },         // [u64 opcode][u32 dst][u32 a][u32 b][u32 c]
533  QuadOp    { fxn_id: u64, dst: u32, a: u32, b: u32, c: u32, d: u32 }, // [u64 opcode][u32 dst][u32 a][u32 b][u32 c][u32 d]
534  VarArg    { fxn_id: u64, dst: u32, args: Vec<u32> },                 // [u64 opcode][u64 fxn_id][u32 dst][u32 arg_count][u32 args...]
535  Ret       { src: u32 },                                              // [u64 opcode][u32 src]
536}
537
538impl EncodedInstr {
539  pub fn byte_len(&self) -> u64 {
540    match self {
541      EncodedInstr::ConstLoad{..} => 1 + 4 + 4,
542      EncodedInstr::NullOp{..}    => 1 + 8 + 4,
543      EncodedInstr::UnOp{..}      => 1 + 8 + 4 + 4,
544      EncodedInstr::BinOp{..}     => 1 + 8 + 4 + 4 + 4,
545      EncodedInstr::TernOp{..}    => 1 + 8 + 4 + 4 + 4 + 4,
546      EncodedInstr::QuadOp{..}    => 1 + 8 + 4 + 4 + 4 + 4 + 4,
547      EncodedInstr::VarArg{ args, .. } => 1 + 8 + 4 + 4 + (4 * args.len() as u64),
548      EncodedInstr::Ret{..}       => 1 + 4,
549    }
550  }
551  pub fn write_to(&self, w: &mut impl Write) -> MResult<()> {
552    match self {
553      EncodedInstr::ConstLoad{ dst, const_id } => {
554        w.write_u8(OpCode::ConstLoad as u8)?;
555        w.write_u32::<LittleEndian>(*dst)?;
556        w.write_u32::<LittleEndian>(*const_id)?;
557      }
558      EncodedInstr::NullOp{ fxn_id, dst } => {
559        w.write_u8(OpCode::NullOp as u8)?;
560        w.write_u64::<LittleEndian>(*fxn_id)?;
561        w.write_u32::<LittleEndian>(*dst)?;
562      }
563      EncodedInstr::UnOp{ fxn_id, dst, src } => {
564        w.write_u8(OpCode::Unop as u8)?;
565        w.write_u64::<LittleEndian>(*fxn_id)?;
566        w.write_u32::<LittleEndian>(*dst)?;
567        w.write_u32::<LittleEndian>(*src)?;
568      }
569      EncodedInstr::BinOp{ fxn_id, dst, lhs, rhs } => {
570        w.write_u8(OpCode::Binop as u8)?;
571        w.write_u64::<LittleEndian>(*fxn_id)?;
572        w.write_u32::<LittleEndian>(*dst)?;
573        w.write_u32::<LittleEndian>(*lhs)?;
574        w.write_u32::<LittleEndian>(*rhs)?;
575      }
576      EncodedInstr::TernOp{ fxn_id, dst, a, b, c } => {
577        w.write_u8(OpCode::Ternop as u8)?;
578        w.write_u64::<LittleEndian>(*fxn_id)?;
579        w.write_u32::<LittleEndian>(*dst)?;
580        w.write_u32::<LittleEndian>(*a)?;
581        w.write_u32::<LittleEndian>(*b)?;
582        w.write_u32::<LittleEndian>(*c)?;
583      }
584      EncodedInstr::QuadOp{ fxn_id, dst, a, b, c, d } => {
585        w.write_u8(OpCode::Quadop as u8)?;
586        w.write_u64::<LittleEndian>(*fxn_id)?;
587        w.write_u32::<LittleEndian>(*dst)?;
588        w.write_u32::<LittleEndian>(*a)?;
589        w.write_u32::<LittleEndian>(*b)?;
590        w.write_u32::<LittleEndian>(*c)?;
591        w.write_u32::<LittleEndian>(*d)?;
592      }
593      EncodedInstr::VarArg{ fxn_id, dst, args } => {
594        w.write_u8(OpCode::VarArg as u8)?;
595        w.write_u64::<LittleEndian>(*fxn_id)?;
596        w.write_u32::<LittleEndian>(*dst)?;
597        w.write_u32::<LittleEndian>(args.len() as u32)?;
598        for a in args {
599          w.write_u32::<LittleEndian>(*a)?;
600        }
601      }
602      EncodedInstr::Ret{ src } => {
603        w.write_u8(OpCode::Return as u8)?;
604        w.write_u32::<LittleEndian>(*src)?;
605      }
606    }
607    Ok(())
608  }
609}
610
611// 7. Dictionary
612// ----------------------------------------------------------------------------
613
614#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
615#[derive(Debug, Clone, Eq, PartialEq)]
616pub struct DictEntry {
617  pub id: u64,          // unique identifier for the dictionary entry
618  pub name: String,     // name of the entry
619} 
620
621impl DictEntry {
622  pub fn new(id: u64, name: &str) -> Self {
623    Self { id, name: name.to_string() }
624  }
625
626  pub fn write_to(&self, w: &mut impl Write) -> MResult<()> {
627    w.write_u64::<LittleEndian>(self.id)?;
628    let name_bytes = self.name.as_bytes();
629    w.write_u32::<LittleEndian>(name_bytes.len() as u32)?;
630    w.write_all(name_bytes)?;
631    Ok(())
632  }
633}
634
635
mech_core/program/compiler/sections.rs

mech_core/program/compiler/
sections.rs
