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fixed default fractional julian day number calculation #40

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fixed default fractional julian day number calculation #40

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7 changes: 5 additions & 2 deletions Plugins/Libraries/LighterCodeGenAST/Generation/GenExpressions.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ public extension CodeGenerator {

switch expression {
case .raw, .tuple, .varargs, .compare, .and, .conditional, .flatMap,
.nilCoalesce, .forceUnwrap, .array:
.arithmetic, .nilCoalesce, .forceUnwrap, .array:
return "(\(string(for: expression)))"

case .literal, .variableReference, .variablePath,
Expand Down Expand Up @@ -83,6 +83,9 @@ public extension CodeGenerator {
case .compare(let lhs, let op, let rhs):
return "\(string(for: lhs)) \(op.rawValue) \(string(for: rhs))"

case .arithmetic(let lhs, let op, let rhs):
return "\(string(for: lhs)) \(op.rawValue) \(string(for: rhs))"

case .and(let expressions):
return expressions.map({ "(\(string(for: $0)))" })
.joined(separator: " && ")
Expand Down Expand Up @@ -142,7 +145,7 @@ public extension CodeGenerator {
switch expression {
case .raw, .literal, .variableReference, .keyPathLookup, .typeInit,
.keyPath, .compare, .cast, .and, .conditional, .variablePath,
.flatMap, .nilCoalesce, .forceUnwrap:
.arithmetic, .flatMap, .nilCoalesce, .forceUnwrap:
append(string(for: expression))

case .tuple, .array: // indent better
Expand Down
27 changes: 19 additions & 8 deletions Plugins/Libraries/LighterCodeGenAST/Nodes/Expression.swift
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Expand Up @@ -9,11 +9,19 @@
public indirect enum Expression: Equatable {

/// The operators for ``compare(lhs:operator:rhs:)`` expressions.
public enum Operator: String, Sendable {
case equal = "=="
case notEqual = "!="
case greaterThanOrEqual = ">="
case lessThan = "<"
public enum ComparisonOperator: String, Sendable {
case equal = "=="
case notEqual = "!="
case greaterThanOrEqual = ">="
case lessThan = "<"
}

/// The operators for ``arithmetic(lhs:operator:rhs:)`` expressions.
public enum ArithmeticOperator: String, Sendable {
case divideBy = "/"
case multiplyBy = "*"
case add = "+"
case subtract = "-"
}

/// Just an arbitrary string to inject
Expand Down Expand Up @@ -53,8 +61,11 @@ public indirect enum Expression: Equatable {
case varargs([ Expression ])

/// `strcmp("hello", s) == 0`
case compare(lhs: Expression, operator: Operator, rhs: Expression)
case compare(lhs: Expression, operator: ComparisonOperator, rhs: Expression)

/// `a + b`
case arithmetic(lhs: Expression, operator: ArithmeticOperator, rhs: Expression)

/// `a && b && c`
case and([ Expression ])

Expand Down Expand Up @@ -265,10 +276,10 @@ public extension Expression {
.compare(lhs: expression, operator: .greaterThanOrEqual, rhs: .integer(0))
}

static func cmp(_ lhs: Expression, _ op: Operator, _ rhs: Expression) -> Self {
static func cmp(_ lhs: Expression, _ op: ComparisonOperator, _ rhs: Expression) -> Self {
.compare(lhs: lhs, operator: op, rhs: rhs)
}
static func cmp(_ lhs: Expression, _ op: Operator, _ rhs: Int) -> Self {
static func cmp(_ lhs: Expression, _ op: ComparisonOperator, _ rhs: Int) -> Self {
.compare(lhs: lhs, operator: op, rhs: .integer(rhs))
}
static func isNil(_ lhs: Expression) -> Self {
Expand Down
10 changes: 8 additions & 2 deletions Plugins/Libraries/LighterGeneration/RecordGeneration/GenerateDefaultValues.swift
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Expand Up @@ -158,8 +158,14 @@ extension EnlighterASTGenerator {
case .date:
return .call(name: "Foundation.Date")
case .double:
return .variableReference(
instance: "Foundation.Date()", name: "timeIntervalSince1970")
return .arithmetic(
lhs: .arithmetic(
lhs: .variableReference(instance: "Foundation.Date()",
name: "timeIntervalSince1970"),
operator: .divideBy,
rhs: .double(86400.0)),
operator: .add,
rhs: .double(2440587.5))
case .integer:
return .cast(
.variableReference(
Expand Down
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