[vala/0.36] codegen: Replace some unfortunate asserts with internal error reports

[Rico Tzschichholz <ricotz src gnome org>]

commit fece4414d6cfbc14c9a486ae9fb3fed3bbd5e866
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Jan 23 21:36:12 2019 +0100

    codegen: Replace some unfortunate asserts with internal error reports

 codegen/valaccodebasemodule.vala   | 6 ++++--
 codegen/valaccodemethodmodule.vala | 3 ++-
 codegen/valagtypemodule.vala       | 2 +-
 3 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/codegen/valaccodebasemodule.vala b/codegen/valaccodebasemodule.vala
index 3c6635452..504b01ee0 100644
--- a/codegen/valaccodebasemodule.vala
+++ b/codegen/valaccodebasemodule.vala
@@ -5546,14 +5546,16 @@ public abstract class Vala.CCodeBaseModule : CodeGenerator {
                                        } else if (cleft is CCodeConstant) {
                                                left = ((CCodeConstant) cleft).name;
                                        } else {
-                                               assert_not_reached ();
+                                               Report.error (expr.source_reference, "internal: Unsupported 
expression");
+                                               left = "NULL";
                                        }
                                        if (cright is CCodeIdentifier) {
                                                right = ((CCodeIdentifier) cright).name;
                                        } else if (cright is CCodeConstant) {
                                                right = ((CCodeConstant) cright).name;
                                        } else {
-                                               assert_not_reached ();
+                                               Report.error (expr.source_reference, "internal: Unsupported 
expression");
+                                               right = "NULL";
                                        }
 
                                        set_cvalue (expr, new CCodeConstant ("%s %s".printf (left, right)));
diff --git a/codegen/valaccodemethodmodule.vala b/codegen/valaccodemethodmodule.vala
index 405bac13c..15c726f60 100644
--- a/codegen/valaccodemethodmodule.vala
+++ b/codegen/valaccodemethodmodule.vala
@@ -970,7 +970,8 @@ public abstract class Vala.CCodeMethodModule : CCodeStructModule {
                        } else if (parent_type is Enum) {
                                this_type = new EnumValueType ((Enum) parent_type);
                        } else {
-                               assert_not_reached ();
+                               Report.error (parent_type.source_reference, "internal: Unsupported symbol 
type");
+                               this_type = new InvalidType ();
                        }
 
                        generate_type_declaration (this_type, decl_space);
diff --git a/codegen/valagtypemodule.vala b/codegen/valagtypemodule.vala
index 92c384063..995f81c21 100644
--- a/codegen/valagtypemodule.vala
+++ b/codegen/valagtypemodule.vala
@@ -2039,7 +2039,7 @@ public class Vala.GTypeModule : GErrorModule {
                                        type_struct.add_declaration (vdecl);
                                }
                        } else {
-                               assert_not_reached ();
+                               Report.error (sym.source_reference, "internal: Unsupported symbol");
                        }
                }