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import {TypedIdentifier} from "../types/_typed_identifier";
import {Identifier} from "../4_file_information/_identifier";
import {IClassDefinition} from "../types/_class_definition";
import {IInterfaceDefinition} from "../types/_interface_definition";
import {IFormDefinition} from "../types/_form_definition";
import {DeferredInformation, IScopeData, IScopeIdentifier, IScopeVariable, ISpaghettiScopeNode, ISpaghettiScope} from "./_spaghetti_scope";
import {IReference, ReferenceType} from "./_reference";
import {AssertError} from "./assert_error";
// most scopes only use a few of the containers, empty ones are shared and replaced on first write
const EMPTY_OBJECT: unknown = Object.freeze({});
const EMPTY_ARRAY: unknown = Object.freeze([]);
abstract class ScopeData {
private readonly data: IScopeData;
public constructor() {
this.data = {
vars: EMPTY_OBJECT as IScopeData["vars"],
cdefs: EMPTY_OBJECT as IScopeData["cdefs"],
idefs: EMPTY_OBJECT as IScopeData["idefs"],
forms: EMPTY_ARRAY as IScopeData["forms"], // todo, refactor to object
types: EMPTY_OBJECT as IScopeData["types"],
extraLikeTypes: EMPTY_OBJECT as IScopeData["extraLikeTypes"],
deferred: EMPTY_OBJECT as IScopeData["deferred"],
references: EMPTY_ARRAY as IScopeData["references"],
sqlConversion: EMPTY_ARRAY as IScopeData["sqlConversion"],
};
}
public getData(): IScopeData {
return this.data;
}
// the shared empty containers are frozen, the methods below replace them on first write
public setVariable(name: string, identifier: TypedIdentifier): void {
if (this.data.vars === EMPTY_OBJECT) {
this.data.vars = {};
}
this.data.vars[name] = identifier;
}
public setType(name: string, type: TypedIdentifier): void {
if (this.data.types === EMPTY_OBJECT) {
this.data.types = {};
}
this.data.types[name] = type;
}
public setExtraLikeType(name: string, type: TypedIdentifier): void {
if (this.data.extraLikeTypes === EMPTY_OBJECT) {
this.data.extraLikeTypes = {};
}
this.data.extraLikeTypes[name] = type;
}
public setDeferred(name: string, deferred: DeferredInformation): void {
if (this.data.deferred === EMPTY_OBJECT) {
this.data.deferred = {};
}
this.data.deferred[name] = deferred;
}
public setClassDefinition(name: string, cdef: IClassDefinition): void {
if (this.data.cdefs === EMPTY_OBJECT) {
this.data.cdefs = {};
}
this.data.cdefs[name] = cdef;
}
public setInterfaceDefinition(name: string, idef: IInterfaceDefinition): void {
if (this.data.idefs === EMPTY_OBJECT) {
this.data.idefs = {};
}
this.data.idefs[name] = idef;
}
public addFormDefinitions(forms: readonly IFormDefinition[]): void {
if (this.data.forms === EMPTY_ARRAY) {
this.data.forms = [];
}
this.data.forms.push(...forms);
}
public addReference(reference: IReference): void {
if (this.data.references === EMPTY_ARRAY) {
this.data.references = [];
}
this.data.references.push(reference);
}
public addSQLConversion(conversion: IScopeData["sqlConversion"][number]): void {
if (this.data.sqlConversion === EMPTY_ARRAY) {
this.data.sqlConversion = [];
}
this.data.sqlConversion.push(conversion);
}
}
export class SpaghettiScopeNode extends ScopeData implements ISpaghettiScopeNode {
private readonly identifier: IScopeIdentifier;
private readonly children: SpaghettiScopeNode[];
private readonly parent: SpaghettiScopeNode | undefined;
public [Symbol.for("debug.description")](){
return `SpaghettiSN ${this.identifier.sname} ${this.identifier.stype}`;
}
public constructor(identifier: IScopeIdentifier, parent: SpaghettiScopeNode | undefined) {
super();
this.identifier = identifier;
this.parent = parent;
this.children = [];
}
public getParent(): SpaghettiScopeNode | undefined {
return this.parent;
}
public addChild(node: SpaghettiScopeNode) {
this.children.push(node);
}
public getChildren(): SpaghettiScopeNode[] {
return this.children;
}
public getFirstChild(): SpaghettiScopeNode | undefined {
return this.children[0];
}
public getIdentifier(): IScopeIdentifier {
return this.identifier;
}
public calcCoverage(): {start: Position, end: Position} {
if (this.identifier.end === undefined) {
throw new AssertError("internal error, caclCoverage");
}
return {start: this.identifier.start, end: this.identifier.end};
}
public setEnd(end: Position): void {
this.identifier.end = end;
}
public findDeferred(name: string): {id: Identifier | undefined, ooType: "CLAS" | "INTF"} | undefined {
let search: SpaghettiScopeNode | undefined = this;
while (search !== undefined) {
const found = search.getData().deferred[name.toUpperCase()];
if (found) {
return {
id: new Identifier(found.token, search.identifier.filename),
ooType: found.ooType,
};
}
search = search.getParent();
}
return undefined;
}
public findClassDefinition(name: string): IClassDefinition | undefined {
let search: SpaghettiScopeNode | undefined = this;
const upper = name.toUpperCase();
while (search !== undefined) {
const c = search.getData().cdefs[upper];
if (c !== undefined) {
return c;
}
search = search.getParent();
}
return undefined;
}
public listClassDefinitions(): IClassDefinition[] {
let search: SpaghettiScopeNode | undefined = this;
const ret: IClassDefinition[] = [];
while (search !== undefined) {
ret.push(...Object.values(search.getData().cdefs));
search = search.getParent();
}
return ret;
}
public listInterfaceDefinitions(): IInterfaceDefinition[] {
let search: SpaghettiScopeNode | undefined = this;
const ret: IInterfaceDefinition[] = [];
while (search !== undefined) {
ret.push(...Object.values(search.getData().idefs));
search = search.getParent();
}
return ret;
}
public findFormDefinition(name: string): IFormDefinition | undefined {
let search: SpaghettiScopeNode | undefined = this;
const upper = name.toUpperCase();
while (search !== undefined) {
for (const form of search.getData().forms) {
if (form.getName().toUpperCase() === upper) {
return form;
}
}
search = search.getParent();
}
return undefined;
}
public findInterfaceDefinition(name: string): IInterfaceDefinition | undefined {
let search: SpaghettiScopeNode | undefined = this;
const upper = name.toUpperCase();
while (search !== undefined) {
const idef = search.getData().idefs[upper];
if (idef) {
return idef;
}
search = search.getParent();
}
return undefined;
}
public findType(name: string): TypedIdentifier | undefined {
let search: SpaghettiScopeNode | undefined = this;
const upper = name.toUpperCase();
while (search !== undefined) {
const found = search.getData().types[upper];
if (found) {
return found;
}
search = search.getParent();
}
return undefined;
}
public findExtraLikeType(name: string): TypedIdentifier | undefined {
let search: SpaghettiScopeNode | undefined = this;
const upper = name.toUpperCase();
while (search !== undefined) {
const data = search.getData();
if (data.extraLikeTypes[upper]) {
return data.extraLikeTypes[upper];
}
search = search.getParent();
}
return undefined;
}
public findVariable(name: string): TypedIdentifier | undefined {
let search: SpaghettiScopeNode | undefined = this;
const upper = name.toUpperCase();
while (search !== undefined) {
const data = search.getData();
if (data.vars[upper]) {
return data.vars[upper];
}
search = search.getParent();
}
return undefined;
}
public findWriteReference(pos: Position): TypedIdentifier | undefined {
for (const r of this.getData().references) {
if (r.referenceType === ReferenceType.DataWriteReference
&& r.position.getStart().equals(pos)) {
if (r.resolved instanceof TypedIdentifier) {
return r.resolved;
}
}
}
return undefined;
}
public findTableReference(pos: Position): string | undefined {
for (const r of this.getData().references) {
if (r.referenceType === ReferenceType.TableReference
&& r.position.getStart().equals(pos)
&& r.resolved) {
return r.resolved.getName();
}
}
return undefined;
}
public findTableVoidReference(pos: Position): boolean {
for (const r of this.getData().references) {
if (r.referenceType === ReferenceType.TableVoidReference
&& r.position.getStart().equals(pos)) {
return true;
}
}
return false;
}
// this method is used in the transpiler
public findScopeForVariable(name: string): IScopeIdentifier | undefined {
let search: SpaghettiScopeNode | undefined = this;
const upper = name.toUpperCase();
while (search !== undefined) {
if (search.getData().vars[upper] !== undefined) {
return search.getIdentifier();
}
search = search.getParent();
}
return undefined;
}
}
export class SpaghettiScope implements ISpaghettiScope {
private readonly node: SpaghettiScopeNode;
public constructor(top: SpaghettiScopeNode) {
this.node = top;
}
// list variable definitions across all nodes
public listDefinitions(filename: string): IScopeVariable[] {
const ret: IScopeVariable[] = [];
for (const n of this.allNodes()) {
if (n.getIdentifier().filename === filename) {
const vars = n.getData().vars;
for (const v in vars) {
if (vars[v].getFilename() === filename) {
ret.push({name: v, identifier: vars[v]});
}
}
}
}
return ret;
}
public listReadPositions(filename: string): Identifier[] {
const ret: Identifier[] = [];
for (const n of this.allNodes()) {
if (n.getIdentifier().filename === filename) {
for (const v of n.getData().references) {
if (v.referenceType === ReferenceType.DataReadReference && v.position.getFilename() === filename) {
ret.push(v.position);
}
}
}
}
return ret;
}
public listWritePositions(filename: string): Identifier[] {
const ret: Identifier[] = [];
for (const n of this.allNodes()) {
if (n.getIdentifier().filename === filename) {
for (const v of n.getData().references) {
if (v.referenceType === ReferenceType.DataWriteReference && v.position.getFilename() === filename) {
ret.push(v.position);
}
}
}
}
return ret;
}
public lookupPosition(p: Position | undefined, filename: string | undefined): SpaghettiScopeNode | undefined {
if (p === undefined || filename === undefined) {
return undefined;
}
return this.lookupPositionTraverse(p, filename, this.node);
}
public getFirstChild() {
return this.node.getFirstChild();
}
public getTop(): SpaghettiScopeNode {
return this.node;
}
/////////////////////////////
private allNodes(): SpaghettiScopeNode[] {
const ret: SpaghettiScopeNode[] = [];
const stack: SpaghettiScopeNode[] = [this.node];
while (stack.length > 0) {
const current = stack.pop()!;
ret.push(current);
stack.push(...current.getChildren());
}
return ret;
}
private lookupPositionTraverse(p: Position, filename: string, node: SpaghettiScopeNode): SpaghettiScopeNode | undefined {
const coverage = node.calcCoverage();
if (node.getIdentifier().filename === filename && p.isBetween(coverage.start, coverage.end) === false) {
return undefined;
}
// possible optimization: binary search the nodes
for (const c of node.getChildren()) {
const result = this.lookupPositionTraverse(p, filename, c);
if (result !== undefined) {
return result;
}
}
if (node.getIdentifier().filename === filename
&& p.isBetween(coverage.start, coverage.end)) {
return node;
}
return undefined;
}
} |