From 76d7c2bc62932af69c8c8ae05169f3daea67f821 Mon Sep 17 00:00:00 2001
From: Aliaksei Chapyzhenka <alex.drom@gmail.com>
Date: Wed, 9 Oct 2019 13:52:42 -0700
Subject: [PATCH] added more VCD grammar rules

---
 bin/build.js | 58 +++++++++++++++++++++++++++++++++++++++++++---------
 1 file changed, 48 insertions(+), 10 deletions(-)

diff --git a/bin/build.js b/bin/build.js
index 8099184..628c5bd 100755
--- a/bin/build.js
+++ b/bin/build.js
@@ -9,20 +9,58 @@ const prj = 'vcd_parser';
 
 const p = new llparse.LLParse(prj);
 
-const start = p.node('start');
-const stop = p.node('stop');
+const declaration = p.node('declaration');
+const inDeclaration = p.node('inDeclaration');
+const enddefinitions = p.node('inDeclarationEnd');
+const simulation = p.node('simulation');
+const inSimulation = p.node('inSimulation');
 
-start
-  .match('stop', stop)
-  .otherwise(p.error(1, 'Expected start'));
+// Add custom uint8_t property to the state
+p.property('i8', 'declaration');
+p.property('i8', 'simulation');
 
-stop
-  .match('start', start)
-  .otherwise(p.error(2, 'Expected start'));
+// Store method inside a custom property
+const onDeclaration = p.invoke(p.code.store('declaration'), inDeclaration);
+const onSimulation = p.invoke(p.code.store('simulation'), inSimulation);
+
+declaration
+  .select({
+    '$comment': 0,
+    '$date': 1,
+    '$scope': 2,
+    '$timescale': 3,
+    '$upscope': 4,
+    '$var': 5,
+    '$version': 6
+  }, onDeclaration)
+  .match('$enddefinitions', enddefinitions)
+  .otherwise(p.error(1, 'Expected declaration'));
+
+inDeclaration
+  .match('$end', declaration)
+  .otherwise(p.error(2, 'Expected end of declaration'));
+
+enddefinitions
+  .match('$end', simulation)
+  .otherwise(p.error(3, 'Expected end of all declaration'));
+
+simulation
+  .select({
+    '$dumpall': 0,
+    '$dumpoff': 1,
+    '$dumpon': 2,
+    '$dumpvars': 3,
+    '$comment': 4
+  }, onSimulation)
+  .otherwise(p.error(4, 'Expected simulation command'));
+
+inSimulation
+  .match('$end', simulation)
+  .otherwise(p.error(5, 'Expected end simulation command'));
 
 // Build
 
-const artifacts = p.build(start);
+const artifacts = p.build(declaration);
 
 fs.writeFileSync(prj + '.h', artifacts.header);
 // fs.writeFileSync('verilog_preprocessor.bc', artifacts.bitcode);
@@ -30,6 +68,6 @@ fs.writeFileSync(prj + '.c', artifacts.c);
 
 const dot = new llparseDot.Dot();
 
-fs.writeFileSync(prj + '.dot', dot.build(start));
+fs.writeFileSync(prj + '.dot', dot.build(declaration));
 
 /* eslint camelcase: 0 */