Expose AST w/o import processing

I’d like to use solc’s abstract syntax tree to evaluate imports and to eventually extend the import functionality using custom imports (i.e., import "Foo"; would pull Foo’s source from a package manager). Unfortunately, when creating the abstract syntax tree solc evaluates imports which, of course, can’t be resolved in this case. In response I’ve created my own solidity-parser project, but there’s no use maintaining two sets of code and I’d very much like to use the canonical AST. Can you expose a function that creates an abstract syntax tree without the need to resolve imports? Thanks!

[tcoulter]

Not discouraged yet. 😃

[tcoulter]

Hey @axic, any chance you can post an example? This input doesn’t seem to work:

pragma solidity ^0.14.15;

import "./Dependency.sol";

contract MyContract {

}

    var solcStandardInput = {
      language: "Solidity",
      sources: {
        "Contract.sol": {
          content: body // contract code
        }
      },
      settings: {
        outputSelection: {
          "*": {
            "*": [
              "ast",
            ]
          },
        }
      }
    };

    var output = solc.compileStandard(JSON.stringify(solcStandardInput));

The output is:

{ contracts: {},
  errors:
   [ { component: 'general',
       formattedMessage: 'Contract.sol:3:1: ParserError: Source "Dependency.sol" not found: File import callback not supported\nimport "./Dependency.sol";\n^------------------------^\n',
       message: 'Source "Dependency.sol" not found: File import callback not supported',
       severity: 'error',
       type: 'ParserError' } ],
  sources: {} }