print the syntax tree

1 files changed, 25 insertions, 0 deletions

diff --git a/akonadish/syntax_modules/core_syntax.cpp b/akonadish/syntax_modules/core_syntax.cpp
index 9cd6a6a..8f3219f 100644
--- a/akonadish/syntax_modules/core_syntax.cpp
+++ b/akonadish/syntax_modules/core_syntax.cpp
@@ -122,6 +122,29 @@ bool printCommandTiming(const QStringList &, State &state)
     return true;
 }
 
+void printSyntaxBranch(State &state, const Syntax::List &list, int depth)
+{
+    if (list.isEmpty()) {
+        return;
+    }
+
+    if (depth > 0) {
+        state.printLine("\\", depth);
+    }
+
+    for (auto syntax: list) {
+        state.print("|-", depth);
+        state.printLine(syntax.keyword);
+        printSyntaxBranch(state, syntax.children, depth + 1);
+    }
+}
+
+bool printSyntaxTree(const QStringList &, State &state)
+{
+    printSyntaxBranch(state, SyntaxTree::self()->syntax(), 0);
+    return true;
+}
+
 Syntax::List syntax()
 {
     Syntax::List syntax;
@@ -131,6 +154,8 @@ Syntax::List syntax()
     help.completer = &CoreSyntax::showHelpCompleter;
     syntax << help;
 
+    syntax << Syntax("syntaxtree", QString(), &printSyntaxTree);
+
     Syntax set(QObject::tr("set"), QObject::tr("Sets settings for the session"));
     set.children << Syntax(QObject::tr("debug"), QObject::tr("Set the debug level from 0 to 6"), &CoreSyntax::setDebugLevel);
     Syntax setTiming = Syntax(QObject::tr("timing"), QObject::tr("Whether or not to print the time commands take to complete"));