Initial lexer

Author: amykyta3

.gitignore

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+**/__pycache__
+build/
+dist/
+*.egg-info/
+*.eggs
+.coverage
+**/.vscode

LICENSE

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+[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/pygments-systemrdl.svg)](https://pypi.org/project/pygments-systemrdl)
+
+# pygments-systemrdl
+
+This module implements a [SystemRDL 2.0](http://accellera.org/downloads/standards/systemrdl)
+language lexer for [Pygments](https://pytments.org).
+The lexer is published as an entry point and, once installed, Pygments will
+pick it up automatically.
+
+The language is registered under the alias: `systemrdl`
+
+## Installation
+
+Install from [PyPi](https://pypi.org/project/pygments-systemrdl) using pip:
+
+    python3 -m pip install pygments-systemrdl

README.md

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+from pygments import lexer
+from pygments import token
+from pygments.lexers.perl import PerlLexer
+
+class SystemRDLLexer(lexer.RegexLexer):
+    name = 'SystemRDL'
+    aliases = ['systemrdl']
+    filenames = ['*.rdl']
+
+    tokens = {
+
+        'root': [
+            lexer.include('comments'),
+            lexer.include('perl'),
+            lexer.include('prop-assign'),
+            lexer.include('comp-def'),
+
+            (lexer.words((
+                'addrmap', 'regfile', 'reg', 'field', 'enum', 'struct',
+                'constraint', 'signal', 'mem'
+            ), suffix=r'\b'), token.Keyword),
+
+            (lexer.words((
+                'external', 'abstract', 'alias', 'unsigned'
+            ), suffix=r'\b'), token.Keyword),
+            
+            (lexer.words((
+                'bit', 'boolean', 'onreadtype', 'onwritetype', 'string',
+                'accesstype', 'addressingtype', 'component', 
+            ), suffix=r'\b'), token.Keyword.Type),
+
+            lexer.include('literals'),
+            (r'[{}()\[\],.;\']', token.Punctuation),
+            (r'[~!%^&*+-=|?:<>/-@]', token.Operator),
+            (r'[a-zA-Z][\w]*', token.Name),
+            (r'\s', token.Text)
+        ],
+
+        'comments': [
+            (r'(?s)/\*.*\*/', token.Comment.Multiline),
+            (r'//.*?$', token.Comment.Single),
+        ],
+
+        'perl': [
+            (r'(?s)(<%=?)(.+?)(%>)', lexer.bygroups(token.Name.Tag, lexer.using(PerlLexer), token.Name.Tag)),
+        ],
+
+        'literals': [
+            (r'([0-9]+)?(\'h)[0-9a-fA-F_]+', token.Number.Hex),
+            (r'([0-9]+)?(\'b)[01_]+', token.Number.Bin),
+            (r'([0-9]+)?(\'d)[0-9_]+', token.Number.Integer),
+            (r'([0-9]+)?(\'o)[0-7_]+', token.Number.Oct),
+            (r'0[xX][0-9a-fA-F_]+', token.Number.Hex),
+            (lexer.words(('true', 'false'), suffix=r'\b'), token.Literal),
+            (r'\d+', token.Number.Integer),
+            (r'"', token.String, 'string'),
+        ],
+        'string': [
+            (r'"', token.String, '#pop'),
+            (r'\\([\\abfnrtv"\']|x[a-fA-F0-9]{2,4}|[0-7]{1,3})', token.String.Escape),
+            (r'[^\\"\n]+', token.String),  # all other characters
+            (r'\\\n', token.String),  # line continuation
+            (r'\\', token.String),  # stray backslash
+        ],
+
+        'prop-assign': [
+            #(r'(\w+)\s*(;)', lexer.bygroups(token.Name.Attribute, token.Operator)),
+            (r'(\w+)(\s*)(=)', lexer.bygroups(token.Name.Attribute, token.Text, token.Operator)),
+            (r'(->)(\s*)(\w+)(\s*)(=)', lexer.bygroups(
+                token.Operator, token.Text, token.Name.Attribute, token.Text, token.Operator
+            )),
+        ],
+
+        'comp-def': [
+            (r'(addrmap|regfile|reg|field|mem|signal)(\s+)([a-zA-Z][\w]*)', lexer.bygroups(token.Keyword, token.Text, token.Name.Class))
+        ],
+    }

rdl_pygments/__init__.py

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+import os
+import setuptools
+
+with open("README.md", "r") as fh:
+    long_description = fh.read()
+
+setuptools.setup (
+    name='pygments-systemrdl',
+    version="1.0.0",
+    author="Alex Mykyta",
+    author_email="amykyta3@github.com",
+    description="SystemRDL 2.0 lexer extension for Pygments",
+    long_description=long_description,
+    long_description_content_type="text/markdown",
+    packages=setuptools.find_packages(),
+    install_requires=["pygments"],
+    entry_points =
+    """
+    [pygments.lexers]
+    rdllexer = rdl_pygments.rdllexer:SystemRDLLexer
+    """,
+    classifiers=(
+        "Programming Language :: Python",
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 3",
+        "Operating System :: OS Independent",
+    ),
+    project_urls={
+        "Source": "https://github.com/SystemRDL/systemrdl-pygments",
+    },
+)