46 lines
1.2 KiB
JavaScript
46 lines
1.2 KiB
JavaScript
const { CucumberExpressionError } = require('./errors')
|
|
|
|
class Argument {
|
|
static build(treeRegexp, text, parameterTypes) {
|
|
const group = treeRegexp.match(text)
|
|
if (!group) return null
|
|
|
|
const argGroups = group.children
|
|
|
|
if (argGroups.length !== parameterTypes.length) {
|
|
throw new CucumberExpressionError(
|
|
`Expression ${treeRegexp.regexp} has ${
|
|
argGroups.length
|
|
} capture groups (${argGroups.map(g => g.value)}), but there were ${
|
|
parameterTypes.length
|
|
} parameter types (${parameterTypes.map(p => p.name)})`
|
|
)
|
|
}
|
|
|
|
return parameterTypes.map(
|
|
(parameterType, i) => new Argument(argGroups[i], parameterType)
|
|
)
|
|
}
|
|
|
|
constructor(group, parameterType) {
|
|
this._group = group
|
|
this._parameterType = parameterType
|
|
}
|
|
|
|
get group() {
|
|
return this._group
|
|
}
|
|
|
|
/**
|
|
* Get the value returned by the parameter type's transformer function.
|
|
*
|
|
* @param thisObj the object in which the transformer function is applied.
|
|
*/
|
|
getValue(thisObj) {
|
|
let groupValues = this._group ? this._group.values : null
|
|
return this._parameterType.transform(thisObj, groupValues)
|
|
}
|
|
}
|
|
|
|
module.exports = Argument
|