Module qasm2/parser

OpenQASM 2.0 Parser Implementation

This module implements a parser for OpenQASM 2.0 that focuses on the core quantum circuit description language without the advanced features of version 3.0. The parser handles quantum and classical register declarations, gate definitions and applications, measurements, and basic control structures.

OpenQASM 2.0 parsing capabilities:

Register declarations: qreg and creg with size specifications
Gate definitions: Custom gate definitions with parameters and bodies
Gate applications: Built-in and custom gate applications
Measurements: Quantum measurements with classical result storage
Basic conditionals: Simple if statements based on classical register values
Arithmetic expressions: Parameter expressions for gate operations
Opaque gates: External gate declarations

The parser maintains a list of known gates and validates gate applications against declared gates and built-in operations.

Example: Parsing OpenQASM 2.0 code

const tokens = lexer.lex();
const parser = new Parser(tokens);
const ast = parser.parse();

// AST contains simplified node structure for OpenQASM 2.0

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Module qasm2/parser

Example: Parsing OpenQASM 2.0 code

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