Changed openqasm3 from submodule dependency to package dependency (#2)

* Changed openqasm3 from submodule dependence to package dependence

* Updated github actions

* Copy the OpenQASM grammar. Removed the submodule

Author: aspcompiler

.github/workflows/tests-ast.yml

@@ -40,21 +40,13 @@ jobs:
       - name: Install ANTLR4 Python runtime
         run: python -mpip install antlr4-python3-runtime==${{ matrix.antlr-version }}
 
-      - name: Generate openqasm3 grammar
-        working-directory: openqasm/source/grammar
-        run: java -Xmx500M -jar ../../../antlr-${{ matrix.antlr-version }}-complete.jar -o ../openqasm/openqasm3/antlr -Dlanguage=Python3 -visitor qasm3Lexer.g4 qasm3Parser.g4
-
       - name: Install Python dependencies
-        working-directory: openqasm/source/openqasm
+        working-directory: source/openpulse
         run: python -mpip install -r requirements.txt -r requirements-dev.txt
 
-      - name: Build openqasm3 package
-        working-directory: openqasm/source/openqasm
-        run: python -mpip install -e .[all]
-
       - name: Generate openpulse grammar
         working-directory: source/grammar
-        run: java -Xmx500M -jar ../../antlr-${{ matrix.antlr-version }}-complete.jar -lib ../../openqasm/source/grammar -o ../openpulse/openpulse/antlr -Dlanguage=Python3 -visitor openpulseLexer.g4 openpulseParser.g4
+        run: java -Xmx500M -jar ../../antlr-${{ matrix.antlr-version }}-complete.jar -o ../openpulse/openpulse/antlr -Dlanguage=Python3 -visitor openpulseLexer.g4 openpulseParser.g4
 
       - name: Check openpulse format
         run: black --check --diff openpulse tests

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "openqasm"]
-	path = openqasm
-	url = https://github.com/openqasm/openqasm.git

README.md

@@ -5,48 +5,20 @@ Specifically, the parser passes the body of `cal` and `defcal` written in `OpenP
 It reuses the classical types and statements from `openqasm3`.
 ## Developing openpulse
 
-### Working with submodule
-
-The `openpulse` package depends on the `openqasm3` package. This repo references the 
-[OpenQASM](https://github.com/openqasm/openqasm) repo as submodule.
-
-To clone `openpulse`, run:
-
-```
-git clone --recurse-submodules https://github.com/openqasm/openpulse-python.git
-```
-
-If you forgot `--recurse-submodules` during initial cloning, you can run:
-
-```
-git submodule update --init --recursive
-```
-
-### Build and install openqasm3
-
-We assume that you have already installed `Antlr4` tools following `openqasm/source/openqasm/README.md`
-and set up an Python virtual environment for this project. 
-
-You will need to build and install `openqasm3` first. Change to the `openqasm/source/grammar` 
-directory and run:
-
-```
-antlr4 -o ../openqasm/openqasm3/antlr -Dlanguage=Python3 -visitor qasm3Lexer.g4 qasm3Parser.g4
-```
-
-Then change to the `openqasm/source/openqasm` directory and run:
+To install dependencies, change to `source/openpulse` directory and run:
 
 ```
-python -mpip install -r requirements.txt -r requirements-dev.txt
-python -mpip install -e ".[all]"
+python -m pip install -r requirements.txt -r requirements-dev.txt
 ```
 
-### Working with openpulse
+To reuse classic statements/types, OpenPulse grammar imports OpenQASM grammar. When we update the
+OpenPulse grammar, we also need to copy the latest OpenQASM grammar from 
+https://github.com/openqasm/openqasm/tree/main/source/grammar into the `source/grammar` directory.
 
 Now build the `openpulse` grammar. Change to the `source/grammar` directory and run:
 
 ```
-antlr4 -lib ../../openqasm/source/grammar -o ../openpulse/openpulse/antlr -Dlanguage=Python3 -visitor openpulseLexer.g4 openpulseParser.g4
+antlr4 -o ../openpulse/openpulse/antlr -Dlanguage=Python3 -visitor openpulseLexer.g4 openpulseParser.g4
 ```
 
 Finally, you can change to the `source/openpulse` directory and run: