Generate hello world Zig code

internal/zig/ast.go

@@ -106,6 +106,26 @@ type Stmt interface {
 	isStmt()
 }
 
+// ExprStmt represents an expression statement (e.g. a function call as a statement).
+type ExprStmt struct {
+	Expr Expr
+}
+
+func (*ExprStmt) isStmt() {}
+
+// VarDeclStmt represents a variable or const declaration at statement level, supporting destructuring and multi-var declarations.
+type VarDeclStmt struct {
+	Const       bool
+	Pattern     VarPattern // Destructuring or multiple variable names
+	Type        TypeExpr   // Optional
+	Value       Expr       // Optional initializer
+	ByteAlign   Expr       // Optional
+	AddrSpace   Expr       // Optional
+	LinkSection Expr       // Optional
+}
+
+func (*VarDeclStmt) isStmt() {}
+
 // ReturnStmt represents a 'return' statement.
 type ReturnStmt struct {
 	Value Expr // Optional
@@ -321,6 +341,9 @@ type CallExpr struct {
 }
 
 // FieldAccessExpr represents a field/member access as a suffix operation (e.g. foo.bar).
+//
+// Note: in order to call a function on an object, use a CallExpr with a Fun of a FieldAccessExpr.
+// See TestHelloWorld for example.
 type FieldAccessExpr struct {
 	Receiver Expr   // The object being accessed
 	Field    string // The field name
@@ -475,23 +498,3 @@ type SwitchElseProng struct {
 type VarPattern struct {
 	Names []string // Variable names (single or multiple for destructuring)
 }
-
-// VarDeclStmt represents a variable or const declaration at statement level, supporting destructuring and multi-var declarations.
-type VarDeclStmt struct {
-	Const       bool
-	Pattern     VarPattern // Destructuring or multiple variable names
-	Type        TypeExpr   // Optional
-	Value       Expr       // Optional initializer
-	ByteAlign   Expr       // Optional
-	AddrSpace   Expr       // Optional
-	LinkSection Expr       // Optional
-}
-
-func (*VarDeclStmt) isStmt() {}
-
-// DotCallExpr represents a method call expression where a method is called on a receiver.
-// For example, in the expression `foo.bar()`, `foo` is the Receiver and `bar()` is the Call.
-type DotCallExpr struct {
-	Receiver Expr // The expression being called (e.g. foo)
-	Call     *CallExpr
-}