src/application/Parser/Script/Compiler/Function/Call/Compiler/SingleCall/Strategies/Argument/NestedFunctionArgumentCompiler.ts
import type { IReadOnlyFunctionCallArgumentCollection } from '@/application/Parser/Script/Compiler/Function/Call/Argument/IFunctionCallArgumentCollection';
import { FunctionCallArgument } from '@/application/Parser/Script/Compiler/Function/Call/Argument/FunctionCallArgument';
import { FunctionCallArgumentCollection } from '@/application/Parser/Script/Compiler/Function/Call/Argument/FunctionCallArgumentCollection';
import { ExpressionsCompiler } from '@/application/Parser/Script/Compiler/Expressions/ExpressionsCompiler';
import type { IExpressionsCompiler } from '@/application/Parser/Script/Compiler/Expressions/IExpressionsCompiler';
import type { FunctionCall } from '@/application/Parser/Script/Compiler/Function/Call/FunctionCall';
import type { FunctionCallCompilationContext } from '@/application/Parser/Script/Compiler/Function/Call/Compiler/FunctionCallCompilationContext';
import { ParsedFunctionCall } from '@/application/Parser/Script/Compiler/Function/Call/ParsedFunctionCall';
import type { ArgumentCompiler } from './ArgumentCompiler';
export class NestedFunctionArgumentCompiler implements ArgumentCompiler {
constructor(
private readonly expressionsCompiler: IExpressionsCompiler = new ExpressionsCompiler(),
) { }
public createCompiledNestedCall(
nestedFunction: FunctionCall,
parentFunction: FunctionCall,
context: FunctionCallCompilationContext,
): FunctionCall {
const compiledArgs = compileNestedFunctionArguments(
nestedFunction,
parentFunction.args,
context,
this.expressionsCompiler,
);
const compiledCall = new ParsedFunctionCall(nestedFunction.functionName, compiledArgs);
return compiledCall;
}
}
function compileNestedFunctionArguments(
nestedFunction: FunctionCall,
parentFunctionArgs: IReadOnlyFunctionCallArgumentCollection,
context: FunctionCallCompilationContext,
expressionsCompiler: IExpressionsCompiler,
): IReadOnlyFunctionCallArgumentCollection {
const requiredParameterNames = context
.allFunctions
.getRequiredParameterNames(nestedFunction.functionName);
const compiledArguments = nestedFunction.args
.getAllParameterNames()
// Compile each argument value
.map((paramName) => ({
parameterName: paramName,
compiledArgumentValue: compileArgument(
paramName,
nestedFunction,
parentFunctionArgs,
expressionsCompiler,
),
}))
// Filter out arguments with absent values
.filter(({
parameterName,
compiledArgumentValue,
}) => isValidNonAbsentArgumentValue(
parameterName,
compiledArgumentValue,
requiredParameterNames,
))
/*
Create argument object with non-absent values.
This is done after eliminating absent values because otherwise creating argument object
with absent values throws error.
*/
.map(({
parameterName,
compiledArgumentValue,
}) => new FunctionCallArgument(parameterName, compiledArgumentValue));
return buildArgumentCollectionFromArguments(compiledArguments);
}
function isValidNonAbsentArgumentValue(
parameterName: string,
argumentValue: string | undefined,
requiredParameterNames: string[],
): boolean {
if (argumentValue) {
return true;
}
if (!requiredParameterNames.includes(parameterName)) {
return false;
}
throw new Error(`Compilation resulted in empty value for required parameter: "${parameterName}"`);
}
function compileArgument(
parameterName: string,
nestedFunction: FunctionCall,
parentFunctionArgs: IReadOnlyFunctionCallArgumentCollection,
expressionsCompiler: IExpressionsCompiler,
): string {
try {
const { argumentValue: codeInArgument } = nestedFunction.args.getArgument(parameterName);
return expressionsCompiler.compileExpressions(codeInArgument, parentFunctionArgs);
} catch (err) {
throw new AggregateError([err], `Error when compiling argument for "${parameterName}"`);
}
}
function buildArgumentCollectionFromArguments(
args: FunctionCallArgument[],
): FunctionCallArgumentCollection {
return args.reduce((compiledArgs, arg) => {
compiledArgs.addArgument(arg);
return compiledArgs;
}, new FunctionCallArgumentCollection());
}