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import * as Expressions from "../../2_statements/expressions";
import {IMethodDefinition} from "../../types/_method_definition";
import {ExpressionNode} from "../../nodes";
import {InlineData} from "./inline_data";
import {Target} from "./target";
import {AbstractType} from "../../types/basic/_abstract_type";
import {INode} from "../../nodes/_inode";
import {Source} from "./source";
import {TypeUtils} from "../_type_utils";
import {CheckSyntaxKey, SyntaxInput, syntaxIssue} from "../_syntax_input";
import {AssertError} from "../assert_error";
import {FieldChain} from "./field_chain";
import {ReferenceType} from "../_reference";
import {checkOffsetLength} from "./_check_offset_length";
interface IListItemT {
name: string;
target: ExpressionNode;
targetType: AbstractType | undefined;
}
interface IListItemS {
name: string;
source: ExpressionNode;
sourceType: AbstractType | undefined;
}
export class MethodParameters {
private requiredParameters: Set<string> | undefined = undefined;
public runSyntax(node: INode, input: SyntaxInput, method: IMethodDefinition | VoidType): void {
if (!(node.get() instanceof Expressions.MethodParameters)) {
throw new AssertError("MethodParameters, unexpected input");
}
const children = node.getChildren().slice();
if (method instanceof VoidType) {
this.requiredParameters = new Set();
} else {
this.requiredParameters = new Set(method.getParameters().getRequiredParameters().map(i => i.getName().toUpperCase()));
}
while (children.length > 0) {
const name = children.shift()?.getFirstToken().getStr().toUpperCase();
switch (name) {
case "EXPORTING":
this.checkExporting(children.shift()!, input, method, false);
break;
case "IMPORTING":
this.checkImporting(children.shift()!, input, method);
break;
case "CHANGING":
this.checkChanging(children.shift()!, input, method);
break;
case "RECEIVING":
this.checkReceiving(children.shift()!, input, method);
break;
case "EXCEPTIONS":
{
// todo, old style exceptions
const node = children.shift()! as ExpressionNode;
const exceptions = node.findFirstExpression(Expressions.ParameterException);
for (const s of exceptions?.findAllExpressions(Expressions.SimpleFieldChain) || []) {
FieldChain.runSyntax(s, input, ReferenceType.DataReadReference);
}
}
break;
default:
throw new AssertError("MethodParameters, unexpected token, " + name);
}
}
this.reportErrors(node, input);
}
///////////////////////
private checkReceiving(node: INode, input: SyntaxInput, method: IMethodDefinition | VoidType) {
const type = method instanceof VoidType ? method : method.getParameters().getReturning()?.getType();
if (type === undefined) {
const message = "Method does not have a returning parameter";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
} else if (!(node instanceof ExpressionNode)) {
const message = "checkReceiving, not an expression node";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
const target = node.findDirectExpression(Expressions.Target);
const inline = target?.findDirectExpression(Expressions.InlineData);
if (inline) {
InlineData.runSyntax(inline, input, type);
} else if (target) {
const targetType = Target.runSyntax(target, input);
if (targetType && new TypeUtils(input.scope).isAssignable(type, targetType) === false) {
const message = "Method returning value not type compatible";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
}
}
private checkImporting(node: INode, input: SyntaxInput, method: IMethodDefinition | VoidType) {
for (const item of this.parameterListT(node, input)) {
let parameterType: AbstractType | undefined = undefined;
if (method instanceof VoidType) {
parameterType = method;
} else {
const parameter = method.getParameters().getExporting().find(p => p.getName().toUpperCase() === item.name);
if (parameter === undefined) {
const message = "Method exporting parameter \"" + item.name + "\" does not exist";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
parameterType = parameter.getType();
}
const inline = item.target.findDirectExpression(Expressions.InlineData);
if (inline) {
InlineData.runSyntax(inline, input, parameterType);
} else if (item.targetType === undefined) {
const message = "Could not determine target type";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
} else if (item.targetType && new TypeUtils(input.scope).isAssignableStrict(parameterType, item.targetType) === false) {
const message = "Method parameter type not compatible, " + item.name;
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
}
}
private checkChanging(node: INode, input: SyntaxInput, method: IMethodDefinition | VoidType) {
for (const item of this.parameterListT(node, input)) {
if (item.target.findFirstExpression(Expressions.InlineData) !== undefined) {
const message = "CHANGING cannot be inlined";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
let parameterType: AbstractType | undefined = undefined;
if (method instanceof VoidType) {
parameterType = method;
} else {
const parameter = method.getParameters().getChanging().find(p => p.getName().toUpperCase() === item.name);
if (parameter === undefined) {
const message = "Method changing parameter \"" + item.name + "\" does not exist";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
parameterType = parameter.getType();
}
if (item.targetType && new TypeUtils(input.scope).isAssignableStrict(parameterType, item.targetType) === false) {
const message = "Method parameter type not compatible, " + item.name;
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
this.requiredParameters?.delete(item.name);
}
}
public checkExporting(node: INode, input: SyntaxInput,
method: IMethodDefinition | VoidType, errors = true): void {
const items = this.parameterListS(node, input, method);
if (method instanceof VoidType) {
return;
}
const allImporting = method.getParameters().getImporting();
if (this.requiredParameters === undefined) {
this.requiredParameters = new Set(method.getParameters().getRequiredParameters().map(i => i.getName().toUpperCase()));
}
for (const item of items) {
const parameter = allImporting.find(p => p.getName().toUpperCase() === item.name);
if (parameter === undefined) {
const message = "Method importing parameter \"" + item.name + "\" does not exist";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
continue;
} else if (new TypeUtils(input.scope).isAssignableStrict(item.sourceType, parameter.getType(), item.source) === false) {
const message = "Method parameter type not compatible, " + item.name;
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
return;
}
this.requiredParameters.delete(item.name);
}
if (errors === true) {
this.reportErrors(node, input);
}
}
private reportErrors(node: INode, input: SyntaxInput) {
for (const r of this.requiredParameters?.values() || []) {
const message = `method parameter "${r}" must be supplied`;
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
}
}
private parameterListS(
node: INode | undefined,
input: SyntaxInput,
method: IMethodDefinition | VoidType): IListItemS[] {
if (node === undefined) {
return [];
} else if (!(node.get() instanceof Expressions.ParameterListS)) {
throw new AssertError("parameterListS, unexpected node");
}
const ret: IListItemS[] = [];
const supplied = new Set<string>();
for (const c of node.getChildren()) {
if (!(c.get() instanceof Expressions.ParameterS) || !(c instanceof ExpressionNode)) {
throw new AssertError("parameterListS, unexpected node, child");
}
const nameNode = c.findDirectExpression(Expressions.ParameterName);
const name = nameNode?.getFirstToken().getStr().toUpperCase();
if (name === undefined || nameNode === undefined) {
throw new AssertError("parameterListS, no name determined");
}
if (supplied.has(name)) {
const message = `Method parameter "${name}" is supplied more than once`;
input.issues.push(syntaxIssue(input, nameNode.getFirstToken(), message));
}
supplied.add(name);
const source = c.findDirectExpression(Expressions.Source);
if (source === undefined) {
throw new AssertError("parameterListS, no source found");
}
let targetType: AbstractType | undefined = undefined;
if (!(method instanceof VoidType)) {
for (const i of method.getParameters().getImporting()) {
if (i.getName().toUpperCase() === name) {
targetType = i.getType();
break;
}
}
} else {
targetType = method;
}
let sourceType = Source.runSyntax(source, input, targetType);
checkOffsetLength(source, sourceType, method, input);
if (sourceType === undefined) {
if (method instanceof VoidType) {
sourceType = method;
} else {
const message = "No source type determined for parameter " + name + " input";
input.issues.push(syntaxIssue(input, node.getFirstToken(), message));
sourceType = VoidType.get(CheckSyntaxKey);
}
}
ret.push({name, source, sourceType});
}
return ret;
}
private parameterListT(
node: INode | undefined,
input: SyntaxInput): IListItemT[] {
if (node === undefined) {
return [];
} else if (!(node.get() instanceof Expressions.ParameterListT)) {
throw new AssertError("parameterListT, unexpected node");
}
const ret: IListItemT[] = [];
const supplied = new Set<string>();
for (const c of node.getChildren()) {
if (!(c.get() instanceof Expressions.ParameterT) || !(c instanceof ExpressionNode)) {
throw new AssertError("parameterListT, unexpected node, child");
}
const nameNode = c.findDirectExpression(Expressions.ParameterName);
const name = nameNode?.getFirstToken().getStr().toUpperCase();
if (name === undefined || nameNode === undefined) {
throw new AssertError("parameterListT, no name determined");
}
if (supplied.has(name)) {
const message = `Method parameter "${name}" is supplied more than once`;
input.issues.push(syntaxIssue(input, nameNode.getFirstToken(), message));
}
supplied.add(name);
const target = c.findDirectExpression(Expressions.Target);
if (target === undefined) {
throw new AssertError("parameterListT, no target found");
}
const targetType = Target.runSyntax(target, input);
ret.push({name, target, targetType});
}
return ret;
}
}
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