[vala/staging: 2/5] parser: Allow custom invocations of parse_file()

[Rico Tzschichholz <ricotz src gnome org>]

commit 71da3b84e23f9d97edaa1735f0e761304519d1f2
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Mon Dec 25 12:04:01 2017 +0100

    parser: Allow custom invocations of parse_file()
    
    Use CodeContext of SourceFile if needed
    
    https://bugzilla.gnome.org/show_bug.cgi?id=791936

 vala/valagenieparser.vala |    8 ++++++++
 vala/valagirparser.vala   |    8 ++++++++
 vala/valaparser.vala      |   10 +++++++++-
 3 files changed, 25 insertions(+), 1 deletions(-)
---
diff --git a/vala/valagenieparser.vala b/vala/valagenieparser.vala
index 8c92e95..dfffa23 100644
--- a/vala/valagenieparser.vala
+++ b/vala/valagenieparser.vala
@@ -399,6 +399,11 @@ public class Vala.Genie.Parser : CodeVisitor {
        }
 
        public void parse_file (SourceFile source_file) {
+               var has_global_context = (context != null);
+               if (!has_global_context) {
+                       context = source_file.context;
+               }
+
                scanner = new Scanner (source_file);
                scanner.parse_file_comments ();
                scanner.indent_spaces = 0;
@@ -430,6 +435,9 @@ public class Vala.Genie.Parser : CodeVisitor {
                }
                
                scanner = null;
+               if (!has_global_context) {
+                       context = null;
+               }
        }
 
        void skip_symbol_name () throws ParseError {
diff --git a/vala/valagirparser.vala b/vala/valagirparser.vala
index edc580c..de5d772 100644
--- a/vala/valagirparser.vala
+++ b/vala/valagirparser.vala
@@ -1375,6 +1375,11 @@ public class Vala.GirParser : CodeVisitor {
        }
 
        public void parse_file (SourceFile source_file) {
+               var has_global_context = (context != null);
+               if (!has_global_context) {
+                       context = source_file.context;
+               }
+
                metadata_stack = new ArrayList<Metadata> ();
                metadata = Metadata.empty;
                cheader_filenames = null;
@@ -1391,6 +1396,9 @@ public class Vala.GirParser : CodeVisitor {
 
                reader = null;
                this.current_source_file = null;
+               if (!has_global_context) {
+                       context = null;
+               }
        }
 
        void next () {
diff --git a/vala/valaparser.vala b/vala/valaparser.vala
index de3ee64..1b1a06f 100644
--- a/vala/valaparser.vala
+++ b/vala/valaparser.vala
@@ -80,7 +80,7 @@ public class Vala.Parser : CodeVisitor {
        }
 
        public override void visit_source_file (SourceFile source_file) {
-               if (context.run_output || source_file.filename.has_suffix (".vala") || 
source_file.filename.has_suffix (".vapi")) {
+               if ((context != null && context.run_output) || source_file.filename.has_suffix (".vala") || 
source_file.filename.has_suffix (".vapi")) {
                        parse_file (source_file);
                }
        }
@@ -322,6 +322,11 @@ public class Vala.Parser : CodeVisitor {
        }
 
        public void parse_file (SourceFile source_file) {
+               var has_global_context = (context != null);
+               if (!has_global_context) {
+                       context = source_file.context;
+               }
+
                scanner = new Scanner (source_file);
                parse_file_comments ();
 
@@ -345,6 +350,9 @@ public class Vala.Parser : CodeVisitor {
                }
                
                scanner = null;
+               if (!has_global_context) {
+                       context = null;
+               }
        }
 
        void parse_file_comments () {