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| 1 | namespace IR.Values.Literal is | |
| 2 | use TypeTyped = Semantic.Types.Typed | |
| 3 | use Semantic.Types.Type | |
| 4 | ||
| 5 | // System.Numerics.BigInteger has no load instruction, so a `bigint` | |
| 6 | // literal is built at run time from its value, the way a decimal | |
| 7 | // literal is built from its decomposition. A magnitude that fits in | |
| 8 | // a long goes through the `BigInteger(int64)` constructor; anything | |
| 9 | // wider goes through `BigInteger.Parse` on the digits, which are | |
| 10 | // written out in decimal whatever radix the source used. | |
| 11 | class BIGINT: Value, TypeTyped is | |
| 12 | // The magnitude in decimal digits. A sign comes from a wrapping | |
| 13 | // unary `-`, so this is never negative. | |
| 14 | value: string | |
| 15 | type: Type | |
| 16 | _as_long: long | |
| 17 | _fits_long: bool | |
| 18 | ||
| 19 | is_lightweight_pure: bool => true | |
| 20 | ||
| 21 | init(value: string, type: Type, as_long: long, fits_long: bool) is | |
| 22 | super.init() | |
| 23 | ||
| 24 | self.value = value | |
| 25 | self.type = type | |
| 26 | _as_long = as_long | |
| 27 | _fits_long = fits_long | |
| 28 | si | |
| 29 | ||
| 30 | gen(context: IR.CONTEXT) is | |
| 31 | let body = context.current_srm_body_emitter! | |
| 32 | ||
| 33 | if _fits_long then | |
| 34 | body.ldc_i8(_as_long) | |
| 35 | body.new_object(context.resolve_bigint_constructor(type)) | |
| 36 | else | |
| 37 | body.ldstr(context.srm_assembly_emitter, value) | |
| 38 | body.call(context.resolve_bigint_parse(type)) | |
| 39 | fi | |
| 40 | si | |
| 41 | ||
| 42 | to_string() -> string => | |
| 43 | "literal:[{type}]({value}n)" | |
| 44 | si | |
| 45 | si |