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71 lines
1.2 KiB
71 lines
1.2 KiB
export type Program = Array<Decl | Stmt>
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// Declarations
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export type Decl = VarDecl
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export type VarDecl = ADecl<"var", {
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type: Type,
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}>
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type ADecl<Ty, Args> = {
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type: "decl",
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decl_type: Ty,
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attrs: Array<Attr>,
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name: string,
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args: Args,
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}
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// Statements
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export type Stmt = LabelStmt | GotoStmt | AssignStmt
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export type LabelStmt = AStmt<"label", {
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name: string,
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}>
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export type GotoStmt = AStmt<"goto", {
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name: string,
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}>
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export type AssignStmt = AStmt<"assign", {
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name: string,
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expr: Expr,
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}>
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type AStmt<Ty, Args> = {
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type: "stmt",
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stmt_type: Ty,
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args: Args,
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}
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// Expressions
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export type Expr = BinaryExpr | UnaryExpr | BasicExpr
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type BinaryExpr = {
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type: "binary",
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op: BinaryOp,
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left: Expr,
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right: Expr,
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}
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type UnaryExpr = {
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type: "unary",
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op: UnaryOp,
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arg: Expr,
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}
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type BasicExpr = number | string
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type UnaryOp = "arith_negate" | "bit_negate"
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type BinaryOp = "add" | "subtract" | "shift_left" | "shift_right" | "bit_and"
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| "bit_xor" | "bit_or"
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// Attributes
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export type Attr = {
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name: string,
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args: Array<string | number>,
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}
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// Types
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export type Type = PrimitiveType
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export type PrimitiveType = "s8" | "u8" | "u16"
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