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Diffstat (limited to 'src/ts-lang/core/eval.ts')
| -rw-r--r-- | src/ts-lang/core/eval.ts | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/src/ts-lang/core/eval.ts b/src/ts-lang/core/eval.ts deleted file mode 100644 index 5f22299..0000000 --- a/src/ts-lang/core/eval.ts +++ /dev/null @@ -1,102 +0,0 @@ -import { - BUILTIN_Add, - BUILTIN_Arr, - BUILTIN_Mul, - BUILTIN_ToString, - SBUILTIN_Call, - SBUILTIN_Map, -} from "../builtin"; -import { ToString } from "../util"; -import { ASTNode, EmptyStackFrame, NodeType, StackFrame } from "./common"; - -export type SENTINEL_NO_BUILTIN = "__NO_BUILTIN__"; -export type MapBuiltins< - Node extends ASTNode, - Frame extends StackFrame -> = GetEvaluatedChildren<Node, Frame> extends infer Args extends readonly any[] - ? Node["name"] extends "call" - ? SBUILTIN_Call<Node, Frame> - : Node["name"] extends "map" - ? SBUILTIN_Map<Node, Frame> - : Node["name"] extends "tostring" - ? BUILTIN_ToString<Args> - : Node["name"] extends "arr" - ? BUILTIN_Arr<Args> - : Node["name"] extends "add" - ? BUILTIN_Add<Args> - : Node["name"] extends "mul" - ? BUILTIN_Mul<Args> - : SENTINEL_NO_BUILTIN - : never; - -export type EvalError<T extends string> = `Eval error: ${T}`; - -export type FindInStack< - Frame extends StackFrame, - NameToFind -> = NameToFind extends keyof Frame["bindings"] - ? Frame["bindings"][NameToFind] - : Frame["parent"] extends null - ? EvalError<`Can't find name "${ToString<NameToFind>}" on the stack`> - : FindInStack<Frame["parent"], NameToFind>; - -export type FnPrim< - Args extends readonly ASTNode[] = readonly ASTNode[], - Fn extends ASTNode = ASTNode -> = { args: Args; fn: Fn }; - -export type HandleFn<Node extends ASTNode> = Node["children"] extends [ - ...infer Args extends ASTNode[], - infer Fn extends ASTNode -] - ? FnPrim<Args, Fn> - : // error? - never; - -// any[] was propertykey -export type MapZip< - Args extends readonly ASTNode[], - Values extends readonly any[] -> = { - [Idx in Exclude< - keyof Args, - keyof any[] - > as Args[Idx] extends infer Node extends ASTNode - ? Node["name"] - : never]: Idx extends keyof Values ? Values[Idx] : never; -}; - -export type CallFn< - Fn extends FnPrim, - Values extends readonly any[], - Frame extends StackFrame -> = _Evaluate<Fn["fn"], StackFrame<MapZip<Fn["args"], Values>, Frame>>; - -export type _Evaluate< - Node extends ASTNode, - Frame extends StackFrame -> = Node["type"] extends NodeType.INT - ? Node["value"] - : Node["type"] extends NodeType.EXT - ? // special builtin - Node["name"] extends "fn" - ? HandleFn<Node> - : MapBuiltins<Node, Frame> extends infer BI - ? BI extends SENTINEL_NO_BUILTIN - ? FindInStack<Frame, Node["name"]> - : BI - : never - : EvalError<`Unhandled node type ${Node["type"]}`>; - -export type GetEvaluatedChildren< - Node extends ASTNode, - Frame extends StackFrame -> = Node["children"] extends infer Children extends readonly ASTNode[] - ? { - [Idx in keyof Children]: Children[Idx] extends ASTNode - ? _Evaluate<Children[Idx], Frame> - : never; - } - : never; - -export type Evaluate<Node extends ASTNode> = _Evaluate<Node, EmptyStackFrame>; |
