[vala/0.40] vala: Don't ignore errors in Parameter and acknowledge them further

[Rico Tzschichholz <ricotz src gnome org>]

commit d10070d693a80a2fb0df18ccd40083832a42a1b9
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Wed Feb 5 08:32:53 2020 +0100

    vala: Don't ignore errors in Parameter and acknowledge them further
    
    This avoids useless subsequent errors and possible criticals while
    operating on broken AST.

 vala/valacreationmethod.vala | 4 +++-
 vala/valadelegate.vala       | 4 +++-
 vala/valamethod.vala         | 5 ++++-
 vala/valasignal.vala         | 4 +++-
 4 files changed, 13 insertions(+), 4 deletions(-)
---
diff --git a/vala/valacreationmethod.vala b/vala/valacreationmethod.vala
index bd2acb243..86d6b013d 100644
--- a/vala/valacreationmethod.vala
+++ b/vala/valacreationmethod.vala
@@ -101,7 +101,9 @@ public class Vala.CreationMethod : Method {
 
                int i = 0;
                foreach (Parameter param in get_parameters()) {
-                       param.check (context);
+                       if (!param.check (context)) {
+                               error = true;
+                       }
                        if (i == 0 && param.ellipsis && body != null) {
                                error = true;
                                Report.error (param.source_reference, "Named parameter required before 
`...'");
diff --git a/vala/valadelegate.vala b/vala/valadelegate.vala
index bcfb1d27a..cd9911d1d 100644
--- a/vala/valadelegate.vala
+++ b/vala/valadelegate.vala
@@ -275,7 +275,9 @@ public class Vala.Delegate : TypeSymbol, Callable {
                }
 
                foreach (Parameter param in parameters) {
-                       param.check (context);
+                       if (!param.check (context)) {
+                               error = true;
+                       }
                }
 
                foreach (DataType error_type in get_error_types ()) {
diff --git a/vala/valamethod.vala b/vala/valamethod.vala
index 6328b0272..1fdd782e4 100644
--- a/vala/valamethod.vala
+++ b/vala/valamethod.vala
@@ -740,7 +740,10 @@ public class Vala.Method : Subroutine, Callable {
 
                var optional_param = false;
                foreach (Parameter param in parameters) {
-                       param.check (context);
+                       if (!param.check (context)) {
+                               error = true;
+                               continue;
+                       }
                        if (coroutine && param.direction == ParameterDirection.REF) {
                                error = true;
                                Report.error (param.source_reference, "Reference parameters are not supported 
for async methods");
diff --git a/vala/valasignal.vala b/vala/valasignal.vala
index db92c8592..c2fbd8c91 100644
--- a/vala/valasignal.vala
+++ b/vala/valasignal.vala
@@ -205,7 +205,9 @@ public class Vala.Signal : Symbol, Lockable, Callable {
                                return false;
                        }
 
-                       param.check (context);
+                       if (!param.check (context)) {
+                               error = true;
+                       }
                }
 
                if (!is_virtual && body != null) {