Introduce antlr4 parser

.gitignore

@@ -157,3 +157,6 @@ dmypy.json
 # End of https://www.toptal.com/developers/gitignore/api/python,vscode
 
 .project
+
+# OSX stuff
+.DS_Store

.isort.cfg

@@ -1,2 +1,2 @@
 [settings]
-known_third_party = black,click,jinja2,pytest,setuptools,sql_to_code
+known_third_party = antlr4,black,click,jinja2,pytest,setuptools,sql_to_code

.pre-commit-config.yaml

@@ -1,6 +1,12 @@
 default_language_version:
   python: python3.7
 
+exclude: |
+  (?x)^(
+      sql_to_code/parsers/generated/PLpgSQLLexer.py|
+      sql_to_code/parsers/generated/PLpgSQLParser.py
+  )$
+
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v3.4.0

requirements/base.in

@@ -1,3 +1,4 @@
 click
 Jinja2
 black
+antlr4-python3-runtime

requirements/base.txt

@@ -4,7 +4,8 @@
 #
 #    pip-compile --output-file=requirements/base.txt requirements/base.in
 #
-
+antlr4-python3-runtime==4.9.1
+    # via -r requirements/base.in
 appdirs==1.4.4
     # via black
 black==20.8b1

sql_to_code/generator.py

@@ -27,9 +27,11 @@ def generate(template_name: str, context: Context) -> str:
 
 def generate_models(input_sql: str, generator: str, output_file: str) -> None:
     file_content: str = get_file_content(filename=input_sql)
-    raw_sql_commands: List[str] = parse_commands(content=file_content)
+    # raw_sql_commands: List[str] = parse_commands(content=file_content)
     context: Context = create_context(raw_sql_commands)
 
+    context: Context = parse_commands(content=file_content)
+
     remmaper, output_template = GENERATOR_CONFIGS[generator]
 
     remmaper.remap(context)