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added filter to apply dynamic filter

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This commit is contained in:
Ilya Puchka
2018-03-22 23:14:30 +00:00
parent 39ed9aa753
commit 564ccb7af7
12 changed files with 129 additions and 70 deletions
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16
Sources/IfTag.swift
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@@ -100,7 +100,7 @@ final class IfExpressionParser {
let tokens: [IfToken]
var position: Int = 0
init(components: [String], tokenParser: TokenParser) throws {
init(components: [String], environment: Environment) throws {
self.tokens = try components.map { component in
if let op = findOperator(name: component) {
switch op {
@@ -111,7 +111,7 @@ final class IfExpressionParser {
}
}
return .variable(try tokenParser.compileResolvable(component))
return .variable(try environment.compileResolvable(component))
}
}
@@ -155,12 +155,6 @@ final class IfExpressionParser {
}
func parseExpression(components: [String], tokenParser: TokenParser) throws -> Expression {
let parser = try IfExpressionParser(components: components, tokenParser: tokenParser)
return try parser.parse()
}
/// Represents an if condition and the associated nodes when the condition
/// evaluates
final class IfCondition {
@@ -187,7 +181,7 @@ class IfNode : NodeType {
var components = token.components()
components.removeFirst()
let expression = try parseExpression(components: components, tokenParser: parser)
let expression = try parser.compileExpression(components: components)
let nodes = try parser.parse(until(["endif", "elif", "else"]))
var conditions: [IfCondition] = [
IfCondition(expression: expression, nodes: nodes)
@@ -197,7 +191,7 @@ class IfNode : NodeType {
while let current = token, current.contents.hasPrefix("elif") {
var components = current.components()
components.removeFirst()
let expression = try parseExpression(components: components, tokenParser: parser)
let expression = try parser.compileExpression(components: components)
let nodes = try parser.parse(until(["endif", "elif", "else"]))
token = parser.nextToken()
@@ -236,7 +230,7 @@ class IfNode : NodeType {
_ = parser.nextToken()
}
let expression = try parseExpression(components: components, tokenParser: parser)
let expression = try parser.compileExpression(components: components)
return IfNode(conditions: [
IfCondition(expression: expression, nodes: trueNodes),
IfCondition(expression: nil, nodes: falseNodes),