Merge pull request #517 from crytic/feat/via-ir-etherscan

platform: etherscan: add support for viaIR

crytic_compile/platform/etherscan.py

@@ -372,16 +372,19 @@ def compile(self, crytic_compile: "CryticCompile", **kwargs: str) -> None:
         working_dir: Optional[str] = None
         remappings: Optional[List[str]] = None
 
+        dict_source_code: Optional[Dict] = None
         try:
             # etherscan might return an object with two curly braces, {{ content }}
             dict_source_code = json.loads(source_code[1:-1])
+            assert isinstance(dict_source_code, dict)
             filenames, working_dir, remappings = _handle_multiple_files(
                 dict_source_code, addr, prefix, contract_name, export_dir
             )
         except JSONDecodeError:
             try:
                 # or etherscan might return an object with single curly braces, { content }
                 dict_source_code = json.loads(source_code)
+                assert isinstance(dict_source_code, dict)
                 filenames, working_dir, remappings = _handle_multiple_files(
                     dict_source_code, addr, prefix, contract_name, export_dir
                 )
@@ -390,6 +393,11 @@ def compile(self, crytic_compile: "CryticCompile", **kwargs: str) -> None:
                     _handle_single_file(source_code, addr, prefix, contract_name, export_dir)
                 ]
 
+        # viaIR is not exposed on the top level JSON offered by etherscan, so we need to inspect the settings
+        via_ir_enabled: Optional[bool] = None
+        if isinstance(dict_source_code, dict):
+            via_ir_enabled = dict_source_code.get("settings", {}).get("viaIR", None)
+
         compilation_unit = CompilationUnit(crytic_compile, contract_name)
 
         compilation_unit.compiler_version = CompilerVersion(
@@ -413,6 +421,7 @@ def compile(self, crytic_compile: "CryticCompile", **kwargs: str) -> None:
             working_dir=working_dir,
             remappings=remappings,
             evm_version=evm_version,
+            via_ir=via_ir_enabled,
         )
 
     def clean(self, **_kwargs: str) -> None:

crytic_compile/platform/solc_standard_json.py

@@ -25,12 +25,14 @@
 LOGGER = logging.getLogger("CryticCompile")
 
 
+# pylint: disable=too-many-arguments
 def standalone_compile(
     filenames: List[str],
     compilation_unit: CompilationUnit,
     working_dir: Optional[str] = None,
     remappings: Optional[List[str]] = None,
     evm_version: Optional[str] = None,
+    via_ir: Optional[bool] = None,
 ) -> None:
     """
     Boilerplate function to run the the standardjson. compilation_unit.compiler_version must be set before calling this function
@@ -48,6 +50,7 @@ def standalone_compile(
         working_dir (Optional[str]): working directory
         remappings (Optional[List[str]]): list of solc remaps to use
         evm_version (Optional[str]): EVM version to target. None for default
+        via_ir (Optional[bool]): whether to enable the viaIR compilation flag. None for unset
 
     Returns:
 
@@ -70,6 +73,9 @@ def standalone_compile(
     if evm_version is not None:
         add_evm_version(standard_json_dict, evm_version)
 
+    if via_ir is not None:
+        add_via_ir(standard_json_dict, via_ir)
+
     add_optimization(
         standard_json_dict,
         compilation_unit.compiler_version.optimized,
@@ -278,6 +284,20 @@ def add_evm_version(json_dict: Dict, version: str) -> None:
     json_dict["settings"]["evmVersion"] = version
 
 
+def add_via_ir(json_dict: Dict, enabled: bool) -> None:
+    """
+    Enable or disable the "viaIR" compilation flag.
+
+    Args:
+        json_dict (Dict): solc standard json input
+        enabled (bool): whether viaIR is enabled
+
+    Returns:
+
+    """
+    json_dict["settings"]["viaIR"] = enabled
+
+
 def parse_standard_json_output(
     targets_json: Dict, compilation_unit: CompilationUnit, solc_working_dir: Optional[str] = None
 ) -> None:

scripts/ci_test_etherscan.sh

@@ -86,3 +86,16 @@ then
     exit 255
 fi
 echo "::endgroup::"
+
+delay_etherscan
+
+# via-ir test for crytic/crytic-compile#517
+echo "::group::Etherscan #7"
+crytic-compile 0x9AB6b21cDF116f611110b048987E58894786C244 --compile-remove-metadata --etherscan-apikey "$GITHUB_ETHERSCAN"
+
+if [ $? -ne 0 ]
+then
+    echo "Etherscan #7 test failed"
+    exit 255
+fi
+echo "::endgroup::"