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allow functions to call other functions #53

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undergroundwires
2021-01-16 13:26:41 +01:00
parent f1abd7682f
commit 7661575573
38 changed files with 1507 additions and 645 deletions
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188
src/application/Parser/Script/Compiler/ScriptCompiler.ts
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@@ -1,184 +1,42 @@
import { generateIlCode, IILCode } from './ILCode';
import { IScriptCode } from '@/domain/IScriptCode';
import { ScriptCode } from '@/domain/ScriptCode';
import { ScriptData, FunctionData, FunctionCallData, ScriptFunctionCallData, FunctionCallParametersData } from 'js-yaml-loader!@/*';
import { FunctionData, ScriptData } from 'js-yaml-loader!@/*';
import { IScriptCompiler } from './IScriptCompiler';
import { ILanguageSyntax } from '@/domain/ScriptCode';
interface ICompiledCode {
readonly code: string;
readonly revertCode: string;
}
import { ISharedFunctionCollection } from './Function/ISharedFunctionCollection';
import { IFunctionCallCompiler } from './FunctionCall/IFunctionCallCompiler';
import { FunctionCallCompiler } from './FunctionCall/FunctionCallCompiler';
import { IFunctionCompiler } from './Function/IFunctionCompiler';
import { FunctionCompiler } from './Function/FunctionCompiler';
export class ScriptCompiler implements IScriptCompiler {
private readonly functions: ISharedFunctionCollection;
constructor(
private readonly functions: readonly FunctionData[] | undefined,
private syntax: ILanguageSyntax) {
ensureValidFunctions(functions);
functions: readonly FunctionData[] | undefined,
private readonly syntax: ILanguageSyntax,
functionCompiler: IFunctionCompiler = FunctionCompiler.instance,
private readonly callCompiler: IFunctionCallCompiler = FunctionCallCompiler.instance,
) {
if (!syntax) { throw new Error('undefined syntax'); }
this.functions = functionCompiler.compileFunctions(functions);
}
public canCompile(script: ScriptData): boolean {
if (!script) { throw new Error('undefined script'); }
if (!script.call) {
return false;
}
return true;
}
public compile(script: ScriptData): IScriptCode {
this.ensureCompilable(script.call);
const compiledCodes = new Array<ICompiledCode>();
const calls = getCallSequence(script.call);
calls.forEach((currentCall, currentCallIndex) => {
ensureValidCall(currentCall, script.name);
const commonFunction = this.getFunctionByName(currentCall.function);
ensureExpectedParameters(commonFunction, currentCall);
let functionCode = compileCode(commonFunction, currentCall.parameters);
if (currentCallIndex !== calls.length - 1) {
functionCode = appendLine(functionCode);
}
compiledCodes.push(functionCode);
});
const scriptCode = merge(compiledCodes);
return new ScriptCode(scriptCode.code, scriptCode.revertCode, script.name, this.syntax);
}
private getFunctionByName(name: string): FunctionData {
const func = this.functions.find((f) => f.name === name);
if (!func) {
throw new Error(`called function is not defined "${name}"`);
}
return func;
}
private ensureCompilable(call: ScriptFunctionCallData) {
if (!this.functions || this.functions.length === 0) {
throw new Error('cannot compile without shared functions');
}
if (typeof call !== 'object') {
throw new Error('called function(s) must be an object');
if (!script) { throw new Error('undefined script'); }
try {
const compiledCode = this.callCompiler.compileCall(script.call, this.functions);
return new ScriptCode(
compiledCode.code,
compiledCode.revertCode,
this.syntax);
} catch (error) {
throw Error(`Script "${script.name}" ${error.message}`);
}
}
}
function ensureExpectedParameters(func: FunctionData, call: FunctionCallData) {
if (!func.parameters && !call.parameters) {
return;
}
const unexpectedParameters = Object.keys(call.parameters || {})
.filter((callParam) => !func.parameters.includes(callParam));
if (unexpectedParameters.length) {
throw new Error(
`function "${func.name}" has unexpected parameter(s) provided: "${unexpectedParameters.join('", "')}"`);
}
}
function getDuplicates(texts: readonly string[]): string[] {
return texts.filter((item, index) => texts.indexOf(item) !== index);
}
function printList(list: readonly string[]): string {
return `"${list.join('","')}"`;
}
function ensureNoDuplicatesInFunctionNames(functions: readonly FunctionData[]) {
const duplicateFunctionNames = getDuplicates(functions
.map((func) => func.name.toLowerCase()));
if (duplicateFunctionNames.length) {
throw new Error(`duplicate function name: ${printList(duplicateFunctionNames)}`);
}
}
function ensureNoUndefinedItem(functions: readonly FunctionData[]) {
if (functions.some((func) => !func)) {
throw new Error(`some functions are undefined`);
}
}
function ensureNoDuplicatesInParameterNames(functions: readonly FunctionData[]) {
const functionsWithParameters = functions
.filter((func) => func.parameters && func.parameters.length > 0);
for (const func of functionsWithParameters) {
const duplicateParameterNames = getDuplicates(func.parameters);
if (duplicateParameterNames.length) {
throw new Error(`"${func.name}": duplicate parameter name: ${printList(duplicateParameterNames)}`);
}
}
}
function ensureNoDuplicateCode(functions: readonly FunctionData[]) {
const duplicateCodes = getDuplicates(functions.map((func) => func.code));
if (duplicateCodes.length > 0) {
throw new Error(`duplicate "code" in functions: ${printList(duplicateCodes)}`);
}
const duplicateRevertCodes = getDuplicates(functions
.filter((func) => func.revertCode)
.map((func) => func.revertCode));
if (duplicateRevertCodes.length > 0) {
throw new Error(`duplicate "revertCode" in functions: ${printList(duplicateRevertCodes)}`);
}
}
function ensureValidFunctions(functions: readonly FunctionData[]) {
if (!functions || functions.length === 0) {
return;
}
ensureNoUndefinedItem(functions);
ensureNoDuplicatesInFunctionNames(functions);
ensureNoDuplicatesInParameterNames(functions);
ensureNoDuplicateCode(functions);
}
function appendLine(code: ICompiledCode): ICompiledCode {
const appendLineIfNotEmpty = (str: string) => str ? `${str}\n` : str;
return {
code: appendLineIfNotEmpty(code.code),
revertCode: appendLineIfNotEmpty(code.revertCode),
};
}
function merge(codes: readonly ICompiledCode[]): ICompiledCode {
return {
code: codes.map((code) => code.code).join(''),
revertCode: codes.map((code) => code.revertCode).join(''),
};
}
function compileCode(func: FunctionData, parameters: FunctionCallParametersData): ICompiledCode {
return {
code: compileExpressions(func.code, parameters),
revertCode: compileExpressions(func.revertCode, parameters),
};
}
function compileExpressions(code: string, parameters: FunctionCallParametersData): string {
let intermediateCode = generateIlCode(code);
intermediateCode = substituteParameters(intermediateCode, parameters);
return intermediateCode.compile();
}
function substituteParameters(intermediateCode: IILCode, parameters: FunctionCallParametersData): IILCode {
const parameterNames = intermediateCode.getUniqueParameterNames();
if (parameterNames.length && !parameters) {
throw new Error(`no parameters defined, expected: ${printList(parameterNames)}`);
}
for (const parameterName of parameterNames) {
const parameterValue = parameters[parameterName];
if (!parameterValue) {
throw Error(`parameter value is not provided for "${parameterName}" in function call`);
}
intermediateCode = intermediateCode.substituteParameter(parameterName, parameterValue);
}
return intermediateCode;
}
function ensureValidCall(call: FunctionCallData, scriptName: string) {
if (!call) {
throw new Error(`undefined function call in script "${scriptName}"`);
}
if (!call.function) {
throw new Error(`empty function name called in script "${scriptName}"`);
}
}
function getCallSequence(call: ScriptFunctionCallData): FunctionCallData[] {
if (call instanceof Array) {
return call as FunctionCallData[];
}
return [ call as FunctionCallData ];
}