1 files changed, 44 insertions, 0 deletions
diff --git a/llparse/src/implementation/c/node/invoke.ts b/llparse/src/implementation/c/node/invoke.ts
new file mode 100644
index 0000000..ee917e9
--- /dev/null
+++ b/llparse/src/implementation/c/node/invoke.ts
@@ -0,0 +1,44 @@
+import * as frontend from 'llparse-frontend';
+
+import { Compilation } from '../compilation';
+import { Node } from './base';
+
+export class Invoke extends Node<frontend.node.Invoke> {
+  public doBuild(out: string[]): void {
+    const ctx = this.compilation;
+
+    const code = ctx.unwrapCode(this.ref.code);
+    const codeDecl = ctx.buildCode(code);
+
+    const args: string[] = [
+      ctx.stateArg(),
+      ctx.posArg(),
+      ctx.endPosArg(),
+    ];
+
+    const signature = code.ref.signature;
+    if (signature === 'value') {
+      args.push(ctx.matchVar());
+    }
+
+    out.push(`switch (${codeDecl}(${args.join(', ')})) {`);
+    let tmp: string[];
+
+    for (const edge of this.ref.edges) {
+      out.push(`  case ${edge.code}:`);
+      tmp = [];
+      this.tailTo(tmp, {
+        noAdvance: true,
+        node: edge.node,
+        value: undefined,
+      });
+      ctx.indent(out, tmp, '    ');
+    }
+
+    out.push('  default:');
+    tmp = [];
+    this.tailTo(tmp, this.ref.otherwise!);
+    ctx.indent(out, tmp, '    ');
+    out.push('}');
+  }
+}