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

@@ -26,8 +26,10 @@ parser simple() {
        (conditionalStatement
         (if)
         (expression
+         (booleanLiteralExpression
           (true)
          )
+        )
         (statement
          (blockStatement)
         )
@@ -75,8 +77,10 @@ parser simple() {
        (conditionalStatement
         (if)
         (expression
+         (booleanLiteralExpression
           (true)
          )
+        )
         (statement
          (blockStatement)
         )
@@ -197,10 +201,12 @@ parser simple() {
         (identifier)
         (assignment)
         (expression
+         (booleanLiteralExpression
           (true)
          )
         )
        )
+      )
       (parserStatement
        (conditionalStatement
         (if)
@@ -217,6 +223,7 @@ parser simple() {
              )
              (assignment)
              (expression
+              (booleanLiteralExpression
                (false)
               )
              )
@@ -227,6 +234,7 @@ parser simple() {
         )
        )
       )
+     )
      (parserTransitionStatement
       (transition)
       (transitionSelectionExpression
@@ -278,10 +286,12 @@ parser simple() {
         (identifier)
         (assignment)
         (expression
+         (booleanLiteralExpression
           (true)
          )
         )
        )
+      )
       (parserStatement
        (variableDeclaration
         (typeRef

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

@@ -66,9 +66,11 @@ parser simple() {
          (selectCase
           (keysetExpression
            (expression
+            (booleanLiteralExpression
              (true)
             )
            )
+          )
           (colon)
           (identifier)
          )