116 lines
2.6 KiB
TypeScript
116 lines
2.6 KiB
TypeScript
import { Span } from "../diagnostics.ts";
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import { IdBase, IdMap } from "../ids.ts";
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import { Ty } from "../ty/ty.ts";
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export type Fn = {
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label: string;
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locals: IdMap<LocalId, Local>;
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blocks: IdMap<BlockId, Block>;
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entry: BlockId;
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};
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export type LocalId = IdBase & { readonly _: unique symbol };
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export type Local = {
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id: LocalId;
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ty: Ty;
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};
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export type BlockId = IdBase & { readonly _: unique symbol };
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export type Block = {
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id: BlockId;
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stmts: Stmt[];
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terminator: Ter;
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};
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export type Stmt = {
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kind: StmtKind;
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};
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export type StmtKind =
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| { tag: "error" }
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| { tag: "assign"; place: Place; rval: RVal }
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| { tag: "fake_read"; place: Place }
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| { tag: "deinit"; place: Place }
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| { tag: "live"; local: LocalId }
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| { tag: "dead"; local: LocalId }
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| { tag: "mention"; place: Place };
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export type Ter = {
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kind: TerKind;
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};
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export type TerKind =
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| { tag: "unset" }
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| { tag: "goto"; target: BlockId }
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| {
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tag: "switch";
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discr: Operand;
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targets: SwitchTarget[];
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otherwise: BlockId;
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}
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| { tag: "return" }
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| { tag: "unreachable" }
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| { tag: "drop"; place: Place; target: BlockId }
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| { tag: "call"; func: Operand; args: Operand[]; dest: Operand };
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export type SwitchTarget = {
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value: number;
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target: BlockId;
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};
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export type Place = {
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local: LocalId;
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proj: ProjElem[];
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};
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// https://doc.rust-lang.org/beta/nightly-rustc/rustc_middle/mir/type.PlaceElem.html
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export type ProjElem =
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| { tag: "deref" }
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| { tag: "repeat" }
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| { tag: "field"; fieldIdx: number }
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| { tag: "index"; local: LocalId }
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| { tag: "downcast"; variantIdx: number };
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// https://doc.rust-lang.org/beta/nightly-rustc/rustc_middle/mir/enum.Rvalue.html
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export type RVal =
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| { tag: "error" }
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| { tag: "use"; operand: Operand }
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| { tag: "repeat"; operand: Operand; length: Const }
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| { tag: "ref"; place: Place; mut: boolean }
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| { tag: "ptr"; place: Place; mut: boolean }
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| { tag: "binary"; binaryType: BinaryType; left: Operand; right: Operand }
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| { tag: "unary"; unaryType: UnaryType; operand: Operand };
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export type BinaryType =
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| "add"
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| "sub"
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| "mul"
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| "div"
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| "rem"
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| "xor"
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| "and"
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| "or"
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| "shl"
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| "shr"
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| "eq"
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| "ne"
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| "lt"
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| "lte"
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| "gt"
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| "gte";
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export type UnaryType = "not" | "neg";
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export type Operand =
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| { tag: "copy"; place: Place }
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| { tag: "move"; place: Place }
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| { tag: "const"; val: Const };
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export type Const =
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| { tag: "null" }
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| { tag: "int"; value: number }
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| { tag: "bool"; value: boolean }
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| { tag: "string"; value: string };
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