Add booleanLiteralExpression To Make Compiling Easier

Signed-off-by: Will Hawkins <hawkinsw@obs.cr>

tree-sitter-p4/grammar.js

@@ -88,7 +88,8 @@ export default grammar({
         parserTransitionStatement: $ => seq($.transition, $.transitionSelectionExpression, $._semicolon),
 
         // Expressions
-        expression: $ => choice($.identifier, $.integer, $.true, $.false, $.string_literal), // Very limited.
+        expression: $ => choice($.identifier, $.integer, $.booleanLiteralExpression, $.string_literal), // Very limited.
+        booleanLiteralExpression: $ => choice($.true, $.false),
         selectExpression: $ => seq($.select, '(', $.expression, ')', '{', $.selectBody, '}'), // TODO: Should be expression list and not just a single expression
         transitionSelectionExpression: $ => choice($.identifier, $.selectExpression),
         keysetExpression: $ => $.expression,

tree-sitter-p4/test/corpus/statements.txt

@@ -26,7 +26,9 @@ parser simple() {
        (conditionalStatement
         (if)
         (expression
-         (true)
+         (booleanLiteralExpression
+          (true)
+         )
         )
         (statement
          (blockStatement)
@@ -75,7 +77,9 @@ parser simple() {
        (conditionalStatement
         (if)
         (expression
-         (true)
+         (booleanLiteralExpression
+          (true)
+         )
         )
         (statement
          (blockStatement)
@@ -197,7 +201,9 @@ parser simple() {
         (identifier)
         (assignment)
         (expression
-         (true)
+         (booleanLiteralExpression
+          (true)
+         )
         )
        )
       )
@@ -217,7 +223,9 @@ parser simple() {
              )
              (assignment)
              (expression
-              (false)
+              (booleanLiteralExpression
+               (false)
+              )
              )
             )
            )
@@ -278,7 +286,9 @@ parser simple() {
         (identifier)
         (assignment)
         (expression
-         (true)
+         (booleanLiteralExpression
+          (true)
+         )
         )
        )
       )

tree-sitter-p4/test/corpus/transitions.txt

@@ -66,7 +66,9 @@ parser simple() {
          (selectCase
           (keysetExpression
            (expression
-            (true)
+            (booleanLiteralExpression
+             (true)
+            )
            )
           )
           (colon)