Reorganized the project as multi-maven module

Updated README
Added language module with grammar
Split the code into common and chapter01 modules.
Removed a number of utility classes that were imported from AA.
Added github workflow file.

1 files changed, 32 insertions, 3 deletions

diff --git a/README.md b/README.md
index ba068fb9..f764099c 100644
--- a/README.md
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 A Simple showcase for the Sea-of-Nodes compiler IR
 
 This repo is intended to demonstrate the Sea-of-Nodes compiler IR.  
-The Sea-of-Nodes is the core IR inside of HotSpot's C2 compiler and Google's V8 compiler and Sun/Oracle's Graal compiler.
+
+The Sea-of-Nodes is the core IR inside of HotSpot's C2 compiler 
+and Google's V8 compiler and Sun/Oracle's Graal compiler.
+
 Since we are show casing the SoN IR, the *language* being implemented is less important.  
 We're using a very simple language similar to C or Java, but with far fewer features.
-The Sea-of-Nodes is used for machine code generation in these industrial strength systems - but for this demonstration the backend is both difficult and less important.
-This repo also is not intended to be a complete language in any sense, and so the backend will probably start with levering C or Java. 
+The Sea-of-Nodes is used for machine code generation in these industrial 
+strength systems - but for this demonstration the backend is both difficult 
+and less important.
+
+This repo also is not intended to be a complete language in any sense, 
+and so the backend will probably start with levering C or Java.
+
+## Chapters
+
+The following is a rough plan, subject to change.
+
+The Common chapter defines code that will be reused throughout.
+
+The remaining chapters will each be self-sufficient and complete; in the sense that each chapter will fully implement 
+a subset of the simple language. Each chapter will also include a detailed commentary on relevant aspects of the 
+Sea Of Nodes intermediate representation.
+
+The simple language will be a small subset of C. 
 
+* [Common](common/README.md): Common utilities including a lexer.
+* [Language](language/README.md): definition.
+* [Chapter 1](chapter01/README.md): Simple control flow statements, `if` and `while`. Variables of `int` type. Simple 
+  arithmetic such as addition, subtraction, multiplication, division. Non-zero values will be truthy.
+* Chapter 2: Function calls.
+* Chapter 3: Comparison operators.
+* Chapter 4: Boolean operators `&&`, `||` and `!`.
+* Chapter 5: `float` and one dimensional static length array type.
+* Chapter 6: Visualize Sea of Nodes IR.
+* Chapter 7: Optimizations - tbc
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