TypeScript babel-traverse.Scope类代码示例

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本文整理汇总了TypeScript中babel-traverse.Scope类的典型用法代码示例。如果您正苦于以下问题：TypeScript Scope类的具体用法？TypeScript Scope怎么用？TypeScript Scope使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了Scope类的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的TypeScript代码示例。

示例1: generateAnonymousState

export function generateAnonymousState (
  scope: Scope,
  expression: NodePath<t.Expression>,
  refIds: Set<t.Identifier>,
  isLogical?: boolean
) {
  let variableName = `anonymousState_${scope.generateUid()}`
  let statementParent = expression.getStatementParent()
  if (!statementParent) {
    throw codeFrameError(expression.node.loc, '无法生成匿名 State，尝试先把值赋到一个变量上再把变量调换。')
  }
  const jsx = isLogical ? expression : expression.findParent(p => p.isJSXElement())
  const callExpr = jsx.findParent(p => p.isCallExpression() && isArrayMapCallExpression(p)) as NodePath<t.CallExpression>
  const ifExpr = jsx.findParent(p => p.isIfStatement())
  const blockStatement = jsx.findParent(p => p.isBlockStatement() && p.parentPath === ifExpr) as NodePath<t.BlockStatement>
  const expr = setParentCondition(jsx, cloneDeep(expression.node))
  if (!callExpr) {
    refIds.add(t.identifier(variableName))
    statementParent.insertBefore(
      buildConstVariableDeclaration(variableName, expr)
    )
    if (blockStatement && blockStatement.isBlockStatement()) {
      blockStatement.traverse({
        VariableDeclarator: (p) => {
          const { id, init } = p.node
          if (t.isIdentifier(id)) {
            const newId = scope.generateDeclaredUidIdentifier('$' + id.name)
            refIds.forEach((refId) => {
              if (refId.name === variableName && !variableName.startsWith('_$')) {
                refIds.delete(refId)
              }
            })
            variableName = newId.name
            refIds.add(t.identifier(variableName))
            blockStatement.scope.rename(id.name, newId.name)
            p.parentPath.replaceWith(
              template('ID = INIT;')({ ID: newId, INIT: init })
            )
          }
        }
      })
    }
  } else {
    variableName = `${LOOP_STATE}_${callExpr.scope.generateUid()}`
    const func = callExpr.node.arguments[0]
    if (t.isArrowFunctionExpression(func)) {
      if (!t.isBlockStatement(func.body)) {
        func.body = t.blockStatement([
          buildConstVariableDeclaration(variableName, expr),
          t.returnStatement(func.body)
        ])
      } else {
        func.body.body.splice(func.body.body.length - 1, 0, buildConstVariableDeclaration(variableName, expr))
      }
    }
  }
  const id = t.identifier(variableName)
  expression.replaceWith(id)
  return id
}

开发者ID:topud，项目名称:taro，代码行数:60，代码来源:utils.ts

示例2: generateAnonymousState

export function generateAnonymousState (
  scope: Scope,
  expression: NodePath<t.Expression>,
  refIds: Set<t.Identifier>,
  isLogical?: boolean
) {
  let variableName = `anonymousState_${scope.generateUid()}`
  let statementParent = expression.getStatementParent()
  if (!statementParent) {
    throw codeFrameError(expression.node.loc, '无法生成匿名 State，尝试先把值赋到一个变量上再把变量调换。')
  }
  const jsx = isLogical ? expression : expression.findParent(p => p.isJSXElement())
  const callExpr = jsx.findParent(p => p.isCallExpression() && isArrayMapCallExpression(p)) as NodePath<t.CallExpression>
  const conditionExpr = jsx.findParent(p => p.isConditionalExpression())
  const logicExpr = jsx.findParent(p => p.isLogicalExpression({ operator: '&&' }))
  let expr = cloneDeep(expression.node)
  if (conditionExpr && conditionExpr.isConditionalExpression()) {
    const consequent = conditionExpr.get('consequent')
    if (consequent === jsx || jsx.findParent(p => p === consequent)) {
      expr = t.conditionalExpression(conditionExpr.get('test').node as any, expr, t.nullLiteral())
    }
  }
  if (logicExpr && logicExpr.isLogicalExpression({ operator: '&&' })) {
    const consequent = logicExpr.get('right')
    if (consequent === jsx || jsx.findParent(p => p === consequent)) {
      expr = t.conditionalExpression(logicExpr.get('left').node as any, expr, t.nullLiteral())
    }
  }
  if (!callExpr) {
    refIds.add(t.identifier(variableName))
    statementParent.insertBefore(
      buildConstVariableDeclaration(variableName, expr)
    )
  } else {
    variableName = `${LOOP_STATE}_${callExpr.scope.generateUid()}`
    const func = callExpr.node.arguments[0]
    if (t.isArrowFunctionExpression(func)) {
      if (!t.isBlockStatement(func.body)) {
        func.body = t.blockStatement([
          buildConstVariableDeclaration(variableName, expr),
          t.returnStatement(func.body)
        ])
      } else {
        statementParent.insertBefore(
          buildConstVariableDeclaration(variableName, expr)
        )
      }
    }
  }
  expression.replaceWith(
    t.identifier(variableName)
  )
}

开发者ID:ApolloRobot，项目名称:taro，代码行数:53，代码来源:utils.ts

示例3: isDerivedFromProps

export function isDerivedFromProps (scope: Scope, bindingName: string) {
  const binding = scope.getBinding(bindingName)
  if (binding && binding.path.isVariableDeclarator()) {
    const init = binding.path.get('init')
    if (init.isMemberExpression()) {
      const { object, property } = init.node
      if (t.isThisExpression(object) && t.isIdentifier(property, { name: 'props' })) {
        return true
      }
    }
  }
  return false
}

开发者ID:YangShaoQun，项目名称:taro，代码行数:13，代码来源:utils.ts

示例4: generateAnonymousState

export function generateAnonymousState (
  scope: Scope,
  expression: NodePath<t.Expression>,
  refIds: Set<t.Identifier>,
  isLogical?: boolean
) {
  let variableName = `anonymousState_${scope.generateUid()}`
  let statementParent = expression.getStatementParent()
  if (!statementParent) {
    throw codeFrameError(expression.node.loc, '无法生成匿名 State，尝试先把值赋到一个变量上再把变量调换。')
  }
  const jsx = isLogical ? expression : expression.findParent(p => p.isJSXElement())
  const callExpr = jsx.findParent(p => p.isCallExpression() && isArrayMapCallExpression(p)) as NodePath<t.CallExpression>
  const ifExpr = jsx.findParent(p => p.isIfStatement())
  const blockStatement = jsx.findParent(p => p.isBlockStatement() && p.parentPath === ifExpr) as NodePath<t.BlockStatement>
  const expr = setParentCondition(jsx, cloneDeep(expression.node))
  if (!callExpr) {
    refIds.add(t.identifier(variableName))
    statementParent.insertBefore(
      buildConstVariableDeclaration(variableName, expr)
    )
    if (blockStatement && blockStatement.isBlockStatement()) {
      blockStatement.traverse({
        VariableDeclarator: (path) => {
          const { id, init } = path.node
          const isArrowFunctionInJSX = path.findParent(p => p.isJSXAttribute() ||
            (
              p.isAssignmentExpression() && t.isMemberExpression(p.node.left) && t.isThisExpression(p.node.left.object)
                && t.isIdentifier(p.node.left.property) && p.node.left.property.name.startsWith('')
            )
          )
          if (isArrowFunctionInJSX) {
            return
          }
          if (t.isIdentifier(id) && !id.name.startsWith(LOOP_STATE)) {
            const newId = scope.generateDeclaredUidIdentifier('$' + id.name)
            refIds.forEach((refId) => {
              if (refId.name === variableName && !variableName.startsWith('_$')) {
                refIds.delete(refId)
              }
            })
            variableName = newId.name
            if (Adapter.type === Adapters.quickapp && variableName.startsWith('_$')) {
              const newVarName = variableName.slice(2)
              scope.rename(variableName, newVarName)
              variableName = newVarName
            }
            refIds.add(t.identifier(variableName))
            blockStatement.scope.rename(id.name, newId.name)
            path.parentPath.replaceWith(
              template('ID = INIT;')({ ID: newId, INIT: init })
            )
          }
        }
      })
    }
  } else {
    variableName = `${LOOP_STATE}_${callExpr.scope.generateUid()}`
    const func = callExpr.node.arguments[0]
    if (t.isArrowFunctionExpression(func)) {
      if (!t.isBlockStatement(func.body)) {
        func.body = t.blockStatement([
          buildConstVariableDeclaration(variableName, expr),
          t.returnStatement(func.body)
        ])
      } else {
        if (ifExpr && ifExpr.isIfStatement() && ifExpr.findParent(p => p === callExpr)) {
          const consequent = ifExpr.get('consequent')
          const test = ifExpr.get('test')
          if (consequent.isBlockStatement()) {
            if (jsx === test || jsx.findParent(p => p === test)) {
              func.body.body.unshift(buildConstVariableDeclaration(variableName, expr))
            } else {
              func.body.body.unshift(t.variableDeclaration('let', [t.variableDeclarator(t.identifier(variableName), t.nullLiteral())]))
              consequent.node.body.push(t.expressionStatement(t.assignmentExpression(
                '=',
                t.identifier(variableName),
                expr
              )))
            }
          } else {
            throw codeFrameError(consequent.node, 'if 表达式的结果必须由一个花括号包裹')
          }
        } else {
          func.body.body.splice(func.body.body.length - 1, 0, buildConstVariableDeclaration(variableName, expr))
        }
      }
    }
  }
  const id = t.identifier(variableName)
  expression.replaceWith(id)
  return id
}

开发者ID:YangShaoQun，项目名称:taro，代码行数:93，代码来源:utils.ts

示例5: template

 VariableDeclarator: (path) => {
   const { id, init } = path.node
   const isArrowFunctionInJSX = path.findParent(p => p.isJSXAttribute() ||
     (
       p.isAssignmentExpression() && t.isMemberExpression(p.node.left) && t.isThisExpression(p.node.left.object)
         && t.isIdentifier(p.node.left.property) && p.node.left.property.name.startsWith('')
     )
   )
   if (isArrowFunctionInJSX) {
     return
   }
   if (t.isIdentifier(id) && !id.name.startsWith(LOOP_STATE)) {
     const newId = scope.generateDeclaredUidIdentifier('$' + id.name)
     refIds.forEach((refId) => {
       if (refId.name === variableName && !variableName.startsWith('_$')) {
         refIds.delete(refId)
       }
     })
     variableName = newId.name
     if (Adapter.type === Adapters.quickapp && variableName.startsWith('_$')) {
       const newVarName = variableName.slice(2)
       scope.rename(variableName, newVarName)
       variableName = newVarName
     }
     refIds.add(t.identifier(variableName))
     blockStatement.scope.rename(id.name, newId.name)
     path.parentPath.replaceWith(
       template('ID = INIT;')({ ID: newId, INIT: init })
     )
   }
 }

开发者ID:YangShaoQun，项目名称:taro，代码行数:31，代码来源:utils.ts

示例6: template

 VariableDeclarator: (p) => {
   const { id, init } = p.node
   if (t.isIdentifier(id)) {
     const newId = scope.generateDeclaredUidIdentifier('$' + id.name)
     refIds.forEach((refId) => {
       if (refId.name === variableName && !variableName.startsWith('_$')) {
         refIds.delete(refId)
       }
     })
     variableName = newId.name
     refIds.add(t.identifier(variableName))
     blockStatement.scope.rename(id.name, newId.name)
     p.parentPath.replaceWith(
       template('ID = INIT;')({ ID: newId, INIT: init })
     )
   }
 }

开发者ID:topud，项目名称:taro，代码行数:17，代码来源:utils.ts

注：本文中的babel-traverse.Scope类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。