fix adapted parser
This commit is contained in:
SimonFJ20
parent
c92fce8ccb
commit
15c70e4840
@ -23,7 +23,7 @@ export type ItemStmt = { item: Item };
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export type LetStmt = {
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pat: Pat;
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ty: Ty;
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ty?: Ty;
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expr?: Expr;
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};
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@ -57,7 +57,7 @@ export type ItemKind =
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| { tag: "use" } & UseItem
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| { tag: "type_alias" } & TypeAliasItem;
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export type ModBlockItem = { stmts: Stmt[] };
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export type ModBlockItem = { block: Block };
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export type ModFileItem = { filePath: string };
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export type EnumItem = { variants: Variant[] };
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export type StructItem = { data: VariantData };
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@ -122,7 +122,7 @@ export type Expr = {
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export type ExprKind =
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| { tag: "error" }
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| { tag: "path" } & Path
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| { tag: "path" } & PathExpr
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| { tag: "null" }
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| { tag: "int" } & IntExpr
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| { tag: "bool" } & BoolExpr
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@ -139,13 +139,14 @@ export type ExprKind =
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| { tag: "call" } & CallExpr
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| { tag: "unary" } & UnaryExpr
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| { tag: "binary" } & BinaryExpr
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| { tag: "block" } & Block
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| { tag: "block" } & BlockExpr
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| { tag: "if" } & IfExpr
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| { tag: "loop" } & LoopExpr
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| { tag: "while" } & WhileExpr
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| { tag: "for" } & ForExpr
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| { tag: "c_for" } & CForExpr;
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export type PathExpr = { path: Path };
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export type IntExpr = { value: number };
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export type BoolExpr = { value: boolean };
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export type StringExpr = { value: string };
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@ -161,6 +162,7 @@ export type IndexExpr = { expr: Expr; index: Expr };
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export type CallExpr = { expr: Expr; args: Expr[] };
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export type UnaryExpr = { unaryType: UnaryType; expr: Expr };
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export type BinaryExpr = { binaryType: BinaryType; left: Expr; right: Expr };
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export type BlockExpr = { block: Block };
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export type IfExpr = { cond: Expr; truthy: Block; falsy?: Expr };
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export type LoopExpr = { body: Block };
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export type WhileExpr = { cond: Expr; body: Block };
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@ -216,13 +218,18 @@ export type Ty = {
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export type TyKind =
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| { tag: "error" }
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| { tag: "path" } & Path
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| { tag: "null" }
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| { tag: "int" }
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| { tag: "bool" }
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| { tag: "string" }
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| { tag: "path" } & PathTy
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| { tag: "ref" } & RefTy
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| { tag: "ptr" } & PtrTy
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| { tag: "slice" } & SliceTy
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| { tag: "array" } & ArrayTy
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| { tag: "anon_struct" } & AnonStructTy;
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export type PathTy = { path: Path };
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export type RefTy = { ty: Ty; mut: boolean };
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export type PtrTy = { ty: Ty; mut: boolean };
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export type SliceTy = { ty: Ty };
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@ -1,5 +1,5 @@
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import { exhausted } from "../util.ts";
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import { Block } from "./ast.ts";
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import { Block, BlockExpr, PathExpr, PathTy } from "./ast.ts";
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import {
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AnonStructTy,
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ArrayExpr,
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@ -83,7 +83,7 @@ export interface Visitor<
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visitExpr?(expr: Expr, ...p: P): R;
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visitErrorExpr?(expr: Expr, ...p: P): R;
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visitPathExpr?(expr: Expr, kind: Path, ...p: P): R;
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visitPathExpr?(expr: Expr, kind: PathExpr, ...p: P): R;
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visitNullExpr?(expr: Expr, ...p: P): R;
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visitIntExpr?(expr: Expr, kind: IntExpr, ...p: P): R;
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visitBoolExpr?(expr: Expr, kind: BoolExpr, ...p: P): R;
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@ -100,7 +100,7 @@ export interface Visitor<
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visitCallExpr?(expr: Expr, kind: CallExpr, ...p: P): R;
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visitUnaryExpr?(expr: Expr, kind: UnaryExpr, ...p: P): R;
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visitBinaryExpr?(expr: Expr, kind: BinaryExpr, ...p: P): R;
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visitBlockExpr?(expr: Expr, kind: Block, ...p: P): R;
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visitBlockExpr?(expr: Expr, kind: BlockExpr, ...p: P): R;
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visitIfExpr?(expr: Expr, kind: IfExpr, ...p: P): R;
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visitLoopExpr?(expr: Expr, kind: LoopExpr, ...p: P): R;
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visitWhileExpr?(expr: Expr, kind: WhileExpr, ...p: P): R;
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@ -113,7 +113,11 @@ export interface Visitor<
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visitTy?(ty: Ty, ...p: P): R;
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visitErrorTy?(ty: Ty, ...p: P): R;
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visitPathTy?(ty: Ty, kind: Path, ...p: P): R;
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visitNullTy?(ty: Ty, ...p: P): R;
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visitIntTy?(ty: Ty, ...p: P): R;
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visitBoolTy?(ty: Ty, ...p: P): R;
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visitStringTy?(ty: Ty, ...p: P): R;
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visitPathTy?(ty: Ty, kind: PathTy, ...p: P): R;
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visitRefTy?(ty: Ty, kind: RefTy, ...p: P): R;
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visitPtrTy?(ty: Ty, kind: PtrTy, ...p: P): R;
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visitSliceTy?(ty: Ty, kind: SliceTy, ...p: P): R;
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@ -163,24 +167,41 @@ export function visitStmt<
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return;
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case "item":
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if (v.visitItemStmt?.(stmt, kind, ...p) === "stop") return;
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visitItem(v, kind.item, ...p);
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return;
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case "let":
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if (v.visitLetStmt?.(stmt, kind, ...p) === "stop") return;
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visitPat(v, kind.pat, ...p);
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if (kind.ty) {
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visitTy(v, kind.ty, ...p);
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}
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if (kind.expr) {
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visitExpr(v, kind.expr, ...p);
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}
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return;
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case "return":
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if (v.visitReturnStmt?.(stmt, kind, ...p) === "stop") return;
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if (kind.expr) {
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visitExpr(v, kind.expr, ...p);
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}
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return;
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case "break":
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if (v.visitBreakStmt?.(stmt, kind, ...p) === "stop") return;
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if (kind.expr) {
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visitExpr(v, kind.expr, ...p);
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}
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return;
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case "continue":
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if (v.visitContinueStmt?.(stmt, ...p) === "stop") return;
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return;
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case "assign":
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if (v.visitAssignStmt?.(stmt, kind, ...p) === "stop") return;
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visitExpr(v, kind.subject, ...p);
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visitExpr(v, kind.value, ...p);
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return;
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case "expr":
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if (v.visitExprStmt?.(stmt, kind, ...p) === "stop") return;
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visitExpr(v, kind.expr, ...p);
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return;
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}
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exhausted(kind);
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@ -193,6 +214,7 @@ export function visitItem<
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item: Item,
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...p: P
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) {
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visitIdent(v, item.ident, ...p);
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const kind = item.kind;
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switch (kind.tag) {
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case "error":
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@ -237,7 +259,7 @@ export function visitExpr<
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return;
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case "path":
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if (v.visitPathExpr?.(expr, kind, ...p) === "stop") return;
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visitPath(v, kind, ...p);
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visitPath(v, kind.path, ...p);
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return;
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case "null":
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if (v.visitNullExpr?.(expr, ...p) === "stop") return;
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@ -271,7 +293,7 @@ export function visitExpr<
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if (kind.path) {
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visitPath(v, kind.path, ...p);
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}
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for (const field of kind.field) {
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for (const field of kind.fields) {
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visitIdent(v, field.ident, ...p);
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visitExpr(v, field.expr, ...p);
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}
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@ -316,14 +338,14 @@ export function visitExpr<
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return;
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case "block":
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if (v.visitBlockExpr?.(expr, kind, ...p) === "stop") return;
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visitBlock(v, kind, ...p);
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visitBlock(v, kind.block, ...p);
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return;
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case "if":
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if (v.visitIfExpr?.(expr, kind, ...p) === "stop") return;
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visitExpr(v, kind.cond, ...p);
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visitBlock(v, kind.truthy, ...p);
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if (kind.falsy) {
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visitBlock(v, kind.falsy, ...p);
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visitExpr(v, kind.falsy, ...p);
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}
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return;
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case "loop":
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@ -388,9 +410,21 @@ export function visitTy<
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case "error":
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if (v.visitErrorTy?.(ty, ...p) === "stop") return;
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return;
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case "null":
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if (v.visitNullTy?.(ty, ...p) === "stop") return;
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return;
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case "int":
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if (v.visitIntTy?.(ty, ...p) === "stop") return;
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return;
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case "bool":
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if (v.visitBoolTy?.(ty, ...p) === "stop") return;
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return;
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case "string":
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if (v.visitStringTy?.(ty, ...p) === "stop") return;
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return;
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case "path":
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if (v.visitPathTy?.(ty, kind, ...p) === "stop") return;
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v.visitPath?.(kind, ...p);
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v.visitPath?.(kind.path, ...p);
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return;
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case "ref":
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if (v.visitRefTy?.(ty, kind, ...p) === "stop") return;
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@ -1,5 +1,11 @@
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import * as ast from "./ast/mod.ts";
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import { Pos, prettyPrintReport, printStackTrace, Report, Span } from "./diagnostics.ts";
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import {
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Pos,
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prettyPrintReport,
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printStackTrace,
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Report,
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Span,
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} from "./diagnostics.ts";
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export class Ctx {
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private fileIds = new Ids();
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@ -44,23 +50,23 @@ export class Ctx {
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}
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public filePosLineText(file: File, pos: Pos): string {
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const fileTextLines = this.fileInfo(file).text.split("\n")
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return fileTextLines[pos.line-1]
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const fileTextLines = this.fileInfo(file).text.split("\n");
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return fileTextLines[pos.line - 1];
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}
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public fileSpanText(file: File, span: Span): string {
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let result = ""
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const fileTextLines = this.fileInfo(file).text.split("\n")
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let result = "";
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const fileTextLines = this.fileInfo(file).text.split("\n");
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for(let i = 0; i < fileTextLines.length; i++) {
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if (i > span.end.line-1) {
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for (let i = 0; i < fileTextLines.length; i++) {
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if (i > span.end.line - 1) {
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break;
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}
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if (i >= span.begin.line-1) {
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if (i >= span.begin.line - 1) {
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result += fileTextLines[i] + "\n";
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}
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}
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return result
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return result;
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}
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public report(rep: Report) {
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@ -78,6 +84,13 @@ export class Ctx {
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}
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}
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}
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public printAsts() {
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for (const [_, info] of this.files) {
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console.log(`${info.absPath}:`);
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console.log(JSON.stringify(info.ast!, null, 2));
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}
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}
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}
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export type File = IdBase;
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@ -4,6 +4,13 @@ import * as ast from "./ast/mod.ts";
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import { Ctx } from "./ctx.ts";
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import { File } from "./ctx.ts";
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async function main() {
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const filePath = Deno.args[0];
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const compiler = new PackCompiler(filePath, new NullEmitter());
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compiler.enableDebug();
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await compiler.compile();
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}
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export type Pack = {
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rootMod: Mod;
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};
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@ -14,6 +21,11 @@ export interface PackEmitter {
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emit(pack: Pack): void;
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}
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export class NullEmitter implements PackEmitter {
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emit(pack: Pack): void {
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}
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}
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export class PackCompiler {
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private ctx = new Ctx();
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@ -22,10 +34,16 @@ export class PackCompiler {
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private emitter: PackEmitter,
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) {}
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public compile() {
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FileTreeAstCollector
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public async compile() {
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await FileTreeAstCollector
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.fromEntryFile(this.ctx, this.entryFilePath)
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.collect();
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this.ctx.printAsts();
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}
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public enableDebug() {
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this.ctx.enableReportImmediately = true;
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this.ctx.enableStacktrace = true;
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}
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}
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@ -74,7 +92,8 @@ export class FileTreeAstCollector implements ast.Visitor<[_P]> {
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kind: ast.ModFileItem,
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{ file }: _P,
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): ast.VisitRes {
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const { ident: { text: ident }, filePath: relPath } = kind;
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const { ident: { text: ident } } = item;
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const { filePath: relPath } = kind;
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const absPath = path.join(path.dirname(this.absPath), relPath);
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this.subFilePromise = this.subFilePromise
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.then(() => {
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@ -99,3 +118,5 @@ export class FileTreeAstCollector implements ast.Visitor<[_P]> {
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return "stop";
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}
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}
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main();
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@ -1,4 +1,5 @@
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import {
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AnonFieldDef,
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BinaryType,
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ExprField,
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PathSegment,
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@ -28,6 +29,8 @@ import { Ctx, File as CtxFile } from "../ctx.ts";
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import { Pos, Span } from "../diagnostics.ts";
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import { Res, todo } from "../util.ts";
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import { Lexer } from "./lexer.ts";
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import { TokenIter } from "./token.ts";
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import { SigFilter } from "./token.ts";
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import { Token } from "./token.ts";
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type ParseRes<V, E = undefined> = Res<V, E>;
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@ -38,14 +41,14 @@ type StmtDetails = {
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};
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export class Parser {
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private lexer: Lexer;
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private lexer: TokenIter;
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private currentToken: Token | null;
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public constructor(
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private ctx: Ctx,
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private file: CtxFile,
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) {
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this.lexer = new Lexer(this.ctx, this.file);
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this.lexer = new SigFilter(new Lexer(this.ctx, this.file));
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this.currentToken = this.lexer.next();
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}
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@ -203,7 +206,7 @@ export class Parser {
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private parseBlockExpr(): Expr {
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const block = this.parseBlock();
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return block.ok
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? this.expr({ tag: "block", ...block.val }, this.span())
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? this.expr({ tag: "block", block: block.val }, this.span())
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: this.expr({ tag: "error" }, this.span());
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}
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@ -312,7 +315,13 @@ export class Parser {
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return this.stmt({
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tag: "item",
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item: this.item(
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{ tag: "mod_block", stmts },
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{
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tag: "mod_block",
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block: {
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stmts,
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span: Span.fromto(pos, stmts.at(-1)?.span ?? pos),
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},
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},
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pos,
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ident,
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details.pub,
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@ -443,18 +452,15 @@ export class Parser {
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});
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}
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private parsePat(): Pat {
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return todo();
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}
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private parseLet(): Stmt {
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const pos = this.span();
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this.step();
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const paramResult = this.parseParam();
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if (!paramResult.ok) {
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return this.stmt({ tag: "error" }, pos);
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const pat = this.parsePat();
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let ty: Ty | undefined = undefined;
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if (this.test(":")) {
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this.step();
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ty = this.parseTy();
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}
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const { pat, ty } = paramResult.val;
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if (!this.test("=")) {
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this.report("expected '='");
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return this.stmt({ tag: "error" }, pos);
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@ -936,9 +942,23 @@ export class Parser {
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private parseOperand(): Expr {
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const pos = this.span();
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if (this.test("ident")) {
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const ident = this.current().identValue!;
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this.step();
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return this.expr({ tag: "ident", ident }, pos);
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const pathRes = this.parsePath();
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if (!pathRes.ok) {
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return this.expr({ tag: "error" }, pos);
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}
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if (this.test("{")) {
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this.step();
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const fields = this.parseDelimitedList(
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this.parseExprField,
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"}",
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",",
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);
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return this.expr(
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{ tag: "struct", path: pathRes.val, fields },
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pathRes.val.span,
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);
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}
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return this.expr({ tag: "path", path: pathRes.val }, pos);
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}
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if (this.test("int")) {
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const value = this.current().intValue!;
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@ -993,6 +1013,45 @@ export class Parser {
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return this.expr({ tag: "error" }, pos);
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}
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private parseExprField(): ParseRes<ExprField> {
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if (!this.test("ident")) {
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this.report("expected 'ident'");
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return Res.Err(undefined);
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}
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const ident = this.parseIdent();
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if (!this.test(":")) {
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this.report("expected ':'");
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return Res.Err(undefined);
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}
|
||||
this.step();
|
||||
const expr = this.parseExpr();
|
||||
return Res.Ok({
|
||||
ident,
|
||||
expr,
|
||||
span: Span.fromto(ident.span, expr.span),
|
||||
});
|
||||
}
|
||||
|
||||
private parsePat(): Pat {
|
||||
const pos = this.span();
|
||||
if (this.test("ident")) {
|
||||
const ident = this.parseIdent();
|
||||
return this.pat({ tag: "bind", ident, mut: false }, ident.span);
|
||||
}
|
||||
if (this.test("mut")) {
|
||||
this.step();
|
||||
if (!this.test("ident")) {
|
||||
this.report("expected 'ident'");
|
||||
return this.pat({ tag: "error" }, pos);
|
||||
}
|
||||
const ident = this.parseIdent();
|
||||
return this.pat({ tag: "bind", ident, mut: false }, pos);
|
||||
}
|
||||
this.report(`expected pattern, got '${this.current().type}'`, pos);
|
||||
this.step();
|
||||
return this.pat({ tag: "error" }, pos);
|
||||
}
|
||||
|
||||
private parseTy(): Ty {
|
||||
const pos = this.span();
|
||||
if (["null", "int", "bool", "string"].includes(this.current().type)) {
|
||||
@ -1005,19 +1064,31 @@ export class Parser {
|
||||
return this.ty({ tag }, pos);
|
||||
}
|
||||
if (this.test("ident")) {
|
||||
const ident = this.current().identValue!;
|
||||
this.step();
|
||||
return this.ty({ tag: "ident", ident: ident }, pos);
|
||||
const pathRes = this.parsePath();
|
||||
if (!pathRes.ok) {
|
||||
return this.ty({ tag: "error" }, pos);
|
||||
}
|
||||
return this.ty({ tag: "path", path: pathRes.val }, pos);
|
||||
}
|
||||
if (this.test("[")) {
|
||||
this.step();
|
||||
const subject = this.parseTy();
|
||||
const ty = this.parseTy();
|
||||
if (this.test(";")) {
|
||||
this.step();
|
||||
const length = this.parseExpr();
|
||||
if (!this.test("]")) {
|
||||
this.report("expected ']'", pos);
|
||||
return this.ty({ tag: "error" }, pos);
|
||||
}
|
||||
this.step();
|
||||
return this.ty({ tag: "array", ty, length }, pos);
|
||||
}
|
||||
if (!this.test("]")) {
|
||||
this.report("expected ']'", pos);
|
||||
this.report("expected ']' or ';'", pos);
|
||||
return this.ty({ tag: "error" }, pos);
|
||||
}
|
||||
this.step();
|
||||
return this.ty({ tag: "array", subject }, pos);
|
||||
return this.ty({ tag: "slice", ty }, pos);
|
||||
}
|
||||
if (this.test("struct")) {
|
||||
this.step();
|
||||
@ -1025,55 +1096,55 @@ export class Parser {
|
||||
this.report("expected '{'");
|
||||
return this.ty({ tag: "error" }, pos);
|
||||
}
|
||||
const fields = this.parseTyStructFields();
|
||||
return this.ty({ tag: "struct", fields }, pos);
|
||||
const fields = this.parseAnonFieldDefs();
|
||||
return this.ty({ tag: "anon_struct", fields }, pos);
|
||||
}
|
||||
if (this.test("&")) {
|
||||
this.step();
|
||||
let tag: "ref" | "ref_mut" = "ref";
|
||||
let mut = false;
|
||||
if (this.test("mut")) {
|
||||
this.step();
|
||||
tag = "ref_mut";
|
||||
mut = true;
|
||||
}
|
||||
const subject = this.parseTy();
|
||||
return this.ty({ type, subject }, pos);
|
||||
const ty = this.parseTy();
|
||||
return this.ty({ tag: "ref", ty, mut }, pos);
|
||||
}
|
||||
if (this.test("*")) {
|
||||
this.step();
|
||||
let tag: "ptr" | "ptr_mut" = "ptr";
|
||||
let mut = false;
|
||||
if (this.test("mut")) {
|
||||
this.step();
|
||||
tag = "ptr_mut";
|
||||
mut = true;
|
||||
}
|
||||
const subject = this.parseTy();
|
||||
return this.ty({ type, subject }, pos);
|
||||
const ty = this.parseTy();
|
||||
return this.ty({ tag: "ptr", ty, mut }, pos);
|
||||
}
|
||||
this.report("expected type");
|
||||
return this.ty({ tag: "error" }, pos);
|
||||
}
|
||||
|
||||
private parseTyStructFields(): Param[] {
|
||||
private parseAnonFieldDefs(): AnonFieldDef[] {
|
||||
this.step();
|
||||
if (this.test("}")) {
|
||||
this.step();
|
||||
return [];
|
||||
}
|
||||
const params: Param[] = [];
|
||||
const paramResult = this.parseParam();
|
||||
const params: AnonFieldDef[] = [];
|
||||
const paramResult = this.parseAnonFieldDef();
|
||||
if (!paramResult.ok) {
|
||||
return [];
|
||||
}
|
||||
params.push(paramResult.value);
|
||||
params.push(paramResult.val);
|
||||
while (this.test(",")) {
|
||||
this.step();
|
||||
if (this.test("}")) {
|
||||
break;
|
||||
}
|
||||
const paramResult = this.parseParam();
|
||||
const paramResult = this.parseAnonFieldDef();
|
||||
if (!paramResult.ok) {
|
||||
return [];
|
||||
}
|
||||
params.push(paramResult.value);
|
||||
params.push(paramResult.val);
|
||||
}
|
||||
if (!this.test("}")) {
|
||||
this.report("expected '}'");
|
||||
@ -1083,10 +1154,72 @@ export class Parser {
|
||||
return params;
|
||||
}
|
||||
|
||||
private parsePath(): Path {
|
||||
private parseAnonFieldDef(): ParseRes<AnonFieldDef> {
|
||||
const begin = this.span();
|
||||
const identRes = this.eatIdent();
|
||||
if (!identRes.ok) return Res.Err(undefined);
|
||||
const ident = identRes.val;
|
||||
if (!this.test(":")) {
|
||||
this.report("expected ':'");
|
||||
return Res.Err(undefined);
|
||||
}
|
||||
this.step();
|
||||
const ty = this.parseTy();
|
||||
return Res.Ok({
|
||||
ident,
|
||||
ty,
|
||||
span: Span.fromto(begin, ty.span),
|
||||
});
|
||||
}
|
||||
|
||||
private parsePath(): ParseRes<Path> {
|
||||
const begin = this.span();
|
||||
let end = begin;
|
||||
const segments: PathSegment[] = [];
|
||||
const identRes = this.eatIdent();
|
||||
if (!identRes.ok) return Res.Err(undefined);
|
||||
const ident = identRes.val;
|
||||
segments.push({ ident, span: Span.fromto(begin, end) });
|
||||
while (this.test("::")) {
|
||||
this.step();
|
||||
if (!this.test("ident")) {
|
||||
this.report("expected 'ident'");
|
||||
return Res.Err(undefined);
|
||||
}
|
||||
end = this.span();
|
||||
const ident = this.parseIdent();
|
||||
let genericArgs: Ty[] | undefined = undefined;
|
||||
if (this.test("::")) {
|
||||
this.step();
|
||||
if (!this.test("<")) {
|
||||
this.report("expected '<'");
|
||||
return Res.Err(undefined);
|
||||
}
|
||||
genericArgs = this.parseDelimitedList(
|
||||
this.parseTyRes,
|
||||
">",
|
||||
",",
|
||||
);
|
||||
}
|
||||
segments.push({
|
||||
ident,
|
||||
genericArgs,
|
||||
span: Span.fromto(begin, end),
|
||||
});
|
||||
}
|
||||
return Res.Ok({ segments, span: Span.fromto(begin, end) });
|
||||
}
|
||||
|
||||
private parseTyRes(): ParseRes<Ty> {
|
||||
return Res.Ok(this.parseTy());
|
||||
}
|
||||
|
||||
private eatIdent(): ParseRes<Ident> {
|
||||
if (!this.test("ident")) {
|
||||
this.report("expected 'ident'");
|
||||
return Res.Err(undefined);
|
||||
}
|
||||
return Res.Ok(this.parseIdent());
|
||||
}
|
||||
|
||||
private parseIdent(): Ident {
|
||||
@ -1107,11 +1240,12 @@ export class Parser {
|
||||
return this.currentToken!;
|
||||
}
|
||||
|
||||
private lastSpan?: Span;
|
||||
private span(): Span {
|
||||
if (this.done()) {
|
||||
throw new Error();
|
||||
return this.lastSpan!;
|
||||
}
|
||||
return this.current().span;
|
||||
return this.lastSpan = this.current().span;
|
||||
}
|
||||
|
||||
private test(type: string): boolean {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user