starknet_getCompiledCasm (#642)

* implement starknet_getCompiledCasm for RPCv8

rpc/errors.go

@@ -198,4 +198,8 @@ var (
 		Code:    63,
 		Message: "An unexpected error occurred",
 	}
+	ErrCompilationError = &RPCError{
+		Code:    9999, //placeholder number as this error has no code so far. TODO: change this with the next updates
+		Message: "More data about the compilation failure",
+	}
 )

rpc/executables.go

@@ -0,0 +1,24 @@
+package rpc
+
+import (
+	"context"
+
+	"github.com/NethermindEth/juno/core/felt"
+)
+
+// Get the contract class definition in the given block associated with the given hash
+//
+// Parameters:
+// - ctx: The context.Context used for the request
+// - classHash: The hash of the contract class whose CASM will be returned
+// Returns:
+// - CasmCompiledContractClass: The compiled contract class
+// - error: An error if any occurred during the execution
+func (provider *Provider) CompiledCasm(ctx context.Context, classHash *felt.Felt) (*CasmCompiledContractClass, error) {
+	var result CasmCompiledContractClass
+	if err := do(ctx, provider.c, "starknet_getCompiledCasm", &result, classHash); err != nil {
+
+		return nil, tryUnwrapToRPCErr(err, ErrClassHashNotFound, ErrCompilationError)
+	}
+	return &result, nil
+}

rpc/executables_test.go

@@ -0,0 +1,7 @@
+package rpc
+
+import "testing"
+
+func TestCompiledCasm(t *testing.T) {
+	t.Skip("TODO: create a test before merge")
+}

rpc/provider.go

@@ -56,6 +56,7 @@ type RpcProvider interface {
 	Class(ctx context.Context, blockID BlockID, classHash *felt.Felt) (ClassOutput, error)
 	ClassAt(ctx context.Context, blockID BlockID, contractAddress *felt.Felt) (ClassOutput, error)
 	ClassHashAt(ctx context.Context, blockID BlockID, contractAddress *felt.Felt) (*felt.Felt, error)
+	CompiledCasm(ctx context.Context, classHash *felt.Felt) (*CasmCompiledContractClass, error)
 	EstimateFee(ctx context.Context, requests []BroadcastTxn, simulationFlags []SimulationFlag, blockID BlockID) ([]FeeEstimation, error)
 	EstimateMessageFee(ctx context.Context, msg MsgFromL1, blockID BlockID) (*FeeEstimation, error)
 	Events(ctx context.Context, input EventsInput) (*EventChunk, error)

rpc/types_contract.go

@@ -69,7 +69,7 @@ type ContractClass struct {
 	// The version of the contract class object. Currently, the Starknet OS supports version 0.1.0
 	ContractClassVersion string `json:"contract_class_version"`
 
-	EntryPointsByType EntryPointsByType `json:"entry_points_by_type"`
+	EntryPointsByType SierraEntryPointsByType `json:"entry_points_by_type"`
 
 	ABI string `json:"abi,omitempty"`
 }
@@ -285,7 +285,7 @@ type SierraEntryPoint struct {
 	Selector *felt.Felt `json:"selector"`
 }
 
-type EntryPointsByType struct {
+type SierraEntryPointsByType struct {
 	Constructor []SierraEntryPoint `json:"CONSTRUCTOR"`
 	External    []SierraEntryPoint `json:"EXTERNAL"`
 	L1Handler   []SierraEntryPoint `json:"L1_HANDLER"`