Datasets:
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8e628ee | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | # runtime/types.py
from __future__ import annotations
from dataclasses import dataclass
from typing import Any, List, Optional
# ── error hierarchy ────────────────────────────────────────────────────────
class MantraError(Exception): pass
class DivisionByZero(MantraError): pass
class InvalidShift(MantraError): pass
class InvalidWidth(MantraError): pass
class InvalidHex(MantraError): pass
class InvalidUtf8(MantraError): pass
class IntegerOverflow(MantraError): pass
class InvalidArgument(MantraError): pass
class InvalidType(MantraError): pass
class HashInputError(MantraError): pass
class AssertionFailure(MantraError): pass
class UndefinedName(MantraError): pass
# ── value types ────────────────────────────────────────────────────────────
@dataclass
class Integer:
value: int
@dataclass
class Boolean:
value: bool
@dataclass
class Byte:
value: int # 0..255
@dataclass
class Bytes:
data: bytes
@dataclass
class String:
text: str
@dataclass
class FunctionValue:
name: str
params: list
body: list
closure: dict # captured env at definition time
@dataclass
class BuiltinValue:
name: str
fn: Any # callable
@dataclass
class ListValue:
items: list
@dataclass
class DictValue:
fields: dict
@dataclass
class Option:
tag: str # 'some' | 'none'
value: Optional[Any]
@dataclass
class Result:
tag: str # 'ok' | 'err'
value: Any
# ── explicit conversions ───────────────────────────────────────────────────
def integer_to_u32(i: Integer) -> int:
return i.value & 0xFFFFFFFF
def integer_to_u64(i: Integer) -> int:
return i.value & 0xFFFFFFFFFFFFFFFF
def u32_to_integer(u: int) -> Integer:
if u < 0 or u > 0xFFFFFFFF:
raise InvalidArgument("u32 out of range")
return Integer(u)
def integer_to_bytes(i: Integer, length: int, byteorder: str = 'big', signed: bool = False) -> Bytes:
try:
return Bytes(i.value.to_bytes(length, byteorder, signed=signed))
except OverflowError:
raise IntegerOverflow("integer does not fit in requested byte length")
def bytes_to_integer(b: Bytes, byteorder: str = 'big', signed: bool = False) -> Integer:
return Integer(int.from_bytes(b.data, byteorder, signed=signed))
def hex_to_bytes(h: str) -> Bytes:
h = h.removeprefix('0x')
if len(h) % 2 != 0:
raise InvalidHex("hex length must be even")
try:
return Bytes(bytes.fromhex(h))
except Exception:
raise InvalidHex("invalid hex string")
def bytes_to_hex(b: Bytes) -> String:
return String(b.data.hex())
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