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Generate IR code for caller functions
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,57 +1,79 @@ | ||
| // | ||
| // IRCallerCapabilityChecks.swift | ||
| // IRGen | ||
| // | ||
| // Created by Hails, Daniel R on 11/07/2018. | ||
| // | ||
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| import AST | ||
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| /// Checks whether the caller of a function has appropriate caller capabilities. | ||
| struct IRCallerCapabilityChecks { | ||
| static let postfix: String = "CallerCheck" | ||
| static let varName: String = "_flint" + postfix | ||
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| var variableName: String | ||
| var callerCapabilities: [CallerCapability] | ||
| let revert: Bool | ||
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| init(callerCapabilities: [CallerCapability], revert: Bool = true, variableName: String = varName) { | ||
| self.variableName = variableName | ||
| self.callerCapabilities = callerCapabilities | ||
| self.revert = revert | ||
| } | ||
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| func rendered(enclosingType: RawTypeIdentifier, environment: Environment) -> String { | ||
| let checks = callerCapabilities.compactMap { callerCapability -> String? in | ||
| guard !callerCapability.isAny else { return nil } | ||
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| let type = environment.type(of: callerCapability.identifier.name, enclosingType: enclosingType) | ||
| let offset = environment.propertyOffset(for: callerCapability.name, enclosingType: enclosingType)! | ||
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| switch type { | ||
| case .fixedSizeArrayType(_, let size): | ||
| return (0..<size).map { index in | ||
| let check = IRRuntimeFunction.isValidCallerCapability(address: "sload(add(\(offset), \(index)))") | ||
| return "\(variableName) := add(\(variableName), \(check)" | ||
| }.joined(separator: "\n") | ||
| case .arrayType(_): | ||
| let check = IRRuntimeFunction.isCallerCapabilityInArray(arrayOffset: offset) | ||
| return "\(variableName) := add(\(variableName), \(check))" | ||
| default: | ||
| let check = IRRuntimeFunction.isValidCallerCapability(address: "sload(\(offset)))") | ||
| return "\(variableName) := add(\(variableName), \(check)" | ||
| } | ||
| } | ||
| let revertString = revert ? "if eq(\(variableName), 0) { revert(0, 0) }" : "" | ||
| if !checks.isEmpty { | ||
| return """ | ||
| let \(variableName) := 0 | ||
| \(checks.joined(separator: "\n")) | ||
| \(revertString) | ||
| """ | ||
| } | ||
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| return "" | ||
| } | ||
| } | ||
| // IRCallerCapabilityChecks.swift | ||
| // IRGen | ||
| // | ||
| // Created by Hails, Daniel R on 11/07/2018. | ||
| // | ||
|
|
||
| import AST | ||
|
|
||
| /// Checks whether the caller of a function has appropriate caller capabilities. | ||
| struct IRCallerCapabilityChecks { | ||
| static let postfix: String = "CallerCheck" | ||
| static let varName: String = "_flint" + postfix | ||
|
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| var variableName: String | ||
| var callerCapabilities: [CallerCapability] | ||
| let revert: Bool | ||
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| init(callerCapabilities: [CallerCapability], revert: Bool = true, variableName: String = varName) { | ||
| self.variableName = variableName | ||
| self.callerCapabilities = callerCapabilities | ||
| self.revert = revert | ||
| } | ||
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| func rendered(enclosingType: RawTypeIdentifier, environment: Environment) -> String { | ||
| let checks = callerCapabilities.compactMap { callerCapability -> String? in | ||
| guard !callerCapability.isAny else { return nil } | ||
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| let type = environment.type(of: callerCapability.identifier.name, enclosingType: enclosingType) | ||
| let offset = environment.propertyOffset(for: callerCapability.name, enclosingType: enclosingType) | ||
| let functionContext = FunctionContext(environment: environment, scopeContext: ScopeContext(), enclosingTypeName: enclosingType, isInStructFunction: false) | ||
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| switch type { | ||
| case .functionType(parameters: [], result: .basicType(.address)): | ||
| var identifier = callerCapability.identifier | ||
| let name = Mangler.mangleFunctionName(identifier.name, parameterTypes: [], enclosingType: enclosingType) | ||
| identifier.identifierToken.kind = .identifier(name) | ||
| let functionCall = IRFunctionCall(functionCall: FunctionCall(identifier: identifier, arguments: [], closeBracketToken: .init(kind: .punctuation(.closeBracket), sourceLocation: .DUMMY), isAttempted: false)) | ||
| let check = "eq(caller(), \(functionCall.rendered(functionContext: functionContext)))" | ||
| return "\(variableName) := add(\(variableName), \(check))" | ||
| case .functionType(parameters: [.basicType(.address)], result: .basicType(.bool)): | ||
| var identifier = callerCapability.identifier | ||
| let name = Mangler.mangleFunctionName(identifier.name, parameterTypes: [.basicType(.address)], enclosingType: enclosingType) | ||
| identifier.identifierToken.kind = .identifier(name) | ||
| let functionCall = IRFunctionCall(functionCall: FunctionCall(identifier: identifier, arguments: [FunctionArgument(.rawAssembly("caller()", resultType: .basicType(.address)))], closeBracketToken: .init(kind: .punctuation(.closeBracket), sourceLocation: .DUMMY), isAttempted: false)) | ||
| let check = "\(functionCall.rendered(functionContext: functionContext))" | ||
| return "\(variableName) := add(\(variableName), \(check))" | ||
| case .fixedSizeArrayType(_, let size): | ||
| return (0..<size).map { index in | ||
| let check = IRRuntimeFunction.isValidCallerCapability(address: "sload(add(\(offset!), \(index)))") | ||
| return "\(variableName) := add(\(variableName), \(check)" | ||
| }.joined(separator: "\n") | ||
| case .arrayType(_): | ||
| let check = IRRuntimeFunction.isCallerCapabilityInArray(arrayOffset: offset!) | ||
| return "\(variableName) := add(\(variableName), \(check))" | ||
| case .basicType(.address): | ||
| let check = IRRuntimeFunction.isValidCallerCapability(address: "sload(\(offset!)))") | ||
| return "\(variableName) := add(\(variableName), \(check)" | ||
| case .basicType(_), .stdlibType(_), .rangeType(_), .dictionaryType(_), .userDefinedType(_), | ||
| .inoutType(_), .functionType(_), .any, .errorType: | ||
| return "" | ||
| } | ||
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| } | ||
| let revertString = revert ? "if eq(\(variableName), 0) { revert(0, 0) }" : "" | ||
| if !checks.isEmpty { | ||
| return """ | ||
| let \(variableName) := 0 | ||
| \(checks.joined(separator: "\n")) | ||
| \(revertString) | ||
| """ | ||
| } | ||
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| return "" | ||
| } | ||
| } |