refactor script compilation to make it easy to add new expressions #41 #53

src/application/Parser/Script/Compiler/Expressions/SyntaxParsers/ParameterSubstitutionParser.ts

@@ -0,0 +1,12 @@
+import { RegexParser, IPrimitiveExpression } from '../Parser/RegexParser';
+
+export class ParameterSubstitutionParser extends RegexParser {
+    protected readonly regex = /{{\s*\$\s*([^}| ]+)\s*}}/g;
+    protected buildExpression(match: RegExpMatchArray): IPrimitiveExpression {
+        const parameterName = match[1];
+        return {
+            parameters: [ parameterName ],
+            evaluator: (args) => args[parameterName],
+        };
+    }
+}