Rust bindings for Solidity's AST and visitors

solc-ast

solc-ast provides rust bindings for the solidity AST and visitors. The visitors were built to be 1-1 compatible with the visitors from solc.

Note: The AST structs are almost entirely from camden-smallwood's solidity-rs. The main deviation is in the Visitor implementation.

Note: AST for inline assembly in incomplete.

Example

solc-ast-rs/tests/basic.rs

Lines 19 to 41 in c62dec0

 #[derive(Default, Debug)] 

 struct FunctionDefinitionCollector { 

 names: Vec<String>, 

 } 

 impl ASTConstVisitor for FunctionDefinitionCollector { 

 fn end_visit_function_definition(&mut self, node: &FunctionDefinition) -> Result<()> { 

 self.names.push(node.name.clone()); 

 Ok(()) 

 } 

 } 

 #[test] 

 fn functions() -> Result<()> { 

 let source_unit = read_counter()?; 

 let mut function_definition_collector = FunctionDefinitionCollector::default(); 

 source_unit.accept(&mut function_definition_collector)?; 

 assert_eq!( 

 function_definition_collector.names, 

 vec![String::from("setNumber"), String::from("increment")] 

 ); 

 Ok(()) 

 }

Cool project! Ran into the following issue:

Things like abi, keccak256, block, etc. have negative IDs, but NodeId aliases u64 https://github.com/ethereum/solidity/blob/develop/libsolidity/analysis/GlobalContext.cpp#L39-L63

Rust bindings for Solidity's AST and visitors

Related tags

Overview

solc-ast

Example

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Comments

Magic variables have negative NodeID

Owner

Hari

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	#[derive(Default, Debug)]
	struct FunctionDefinitionCollector {
	names: Vec<String>,
	}

	impl ASTConstVisitor for FunctionDefinitionCollector {
	fn end_visit_function_definition(&mut self, node: &FunctionDefinition) -> Result<()> {
	self.names.push(node.name.clone());
	Ok(())
	}
	}

	#[test]
	fn functions() -> Result<()> {
	let source_unit = read_counter()?;
	let mut function_definition_collector = FunctionDefinitionCollector::default();
	source_unit.accept(&mut function_definition_collector)?;
	assert_eq!(
	function_definition_collector.names,
	vec![String::from("setNumber"), String::from("increment")]
	);
	Ok(())
	}