From aa5a28d2bf56c0fa41e9664a2c8263e9b8f916ee Mon Sep 17 00:00:00 2001
From: Eduard Urbach <eduard@urbach.dev>
Date: Wed, 20 Aug 2025 14:45:31 +0200
Subject: [PATCH] Added an error message for missing field names

---
 src/core/errors.go                   | 1 +
 src/core/evaluateStruct.go           | 5 +++++
 src/core/testdata/MissingFieldName.q | 8 ++++++++
 3 files changed, 14 insertions(+)
 create mode 100644 src/core/testdata/MissingFieldName.q

diff --git a/src/core/errors.go b/src/core/errors.go
index a39ffaa..f6226a1 100644
--- a/src/core/errors.go
+++ b/src/core/errors.go
@@ -13,6 +13,7 @@ var (
 	InvalidNumber          = errors.String("Invalid number")
 	InvalidRune            = errors.String("Invalid rune")
 	InvalidStructOperation = errors.String("Invalid operation on structs")
+	MissingFieldName       = errors.String("Missing field name in struct initialization")
 	MissingOperand         = errors.String("Missing operand")
 )
 
diff --git a/src/core/evaluateStruct.go b/src/core/evaluateStruct.go
index 5d782ba..273edf7 100644
--- a/src/core/evaluateStruct.go
+++ b/src/core/evaluateStruct.go
@@ -1,6 +1,7 @@
 package core
 
 import (
+	"git.urbach.dev/cli/q/src/errors"
 	"git.urbach.dev/cli/q/src/expression"
 	"git.urbach.dev/cli/q/src/ssa"
 	"git.urbach.dev/cli/q/src/token"
@@ -17,6 +18,10 @@ func (f *Function) evaluateStruct(expr *expression.Expression) (ssa.Value, error
 	}
 
 	for _, definition := range expr.Children[1:] {
+		if definition.IsLeaf() {
+			return nil, errors.New(MissingFieldName, f.File, definition.Source().StartPos)
+		}
+
 		left := definition.Children[0]
 		fieldName := left.String(f.File.Bytes)
 		field := typ.FieldByName(fieldName)
diff --git a/src/core/testdata/MissingFieldName.q b/src/core/testdata/MissingFieldName.q
new file mode 100644
index 0000000..82363f9
--- /dev/null
+++ b/src/core/testdata/MissingFieldName.q
@@ -0,0 +1,8 @@
+Point {
+	x int
+	y int
+}
+
+main() {
+	p := Point{1, 2}
+}
\ No newline at end of file
-- 
2.51.2