[ios, macos] Update style documentation.

4 files changed, 12 insertions, 9 deletions

diff --git a/platform/darwin/docs/guides/For Style Authors.md.ejs b/platform/darwin/docs/guides/For Style Authors.md.ejs
index c3c699f8ab..7306862874 100644
--- a/platform/darwin/docs/guides/For Style Authors.md.ejs
+++ b/platform/darwin/docs/guides/For Style Authors.md.ejs
@@ -354,9 +354,9 @@ In style specification | Method, function, or predicate type | Format string syn
 `>=`                   | `NSGreaterThanOrEqualToPredicateOperatorType` | `key >= value`
 `all`                  | `NSAndPredicateType` | `p0 AND … AND pn`
 `any`                  | `NSOrPredicateType` | `p0 OR … OR pn`
-`case`                 | `+[NSExpression expressionForConditional:trueExpression:falseExpression:]` | `TERNARY(condition, trueExpression, falseExpression)`
-`coalesce`             | |
-`match`                | |
+`case`                 | `MGL_IF` | `MGL_IF(1 = 2, YES, 2 = 2, YES, NO)` 
+`coalesce`             | `mgl_coalesce:` | `mgl_coalesce({x, y, z})`
+`match`                | `MGL_MATCH` | `MGL_MATCH(x, 0, 'zero match', 1, 'one match', 'two match', 'default')`
 `interpolate`          | `mgl_interpolate:withCurveType:parameters:stops:` |
 `step`                 | `mgl_step:withMinimum:stops:` |
 `let`                  | `mgl_expressionWithContext:` | `MGL_LET('ios', 11, 'macos', 10.13, $ios + $macos)`
diff --git a/platform/darwin/docs/guides/Predicates and Expressions.md b/platform/darwin/docs/guides/Predicates and Expressions.md
index 85d907daa8..057f991eac 100644
--- a/platform/darwin/docs/guides/Predicates and Expressions.md
+++ b/platform/darwin/docs/guides/Predicates and Expressions.md
@@ -195,7 +195,10 @@ Initializer parameter | Format string syntax | Description
 `mgl_interpolate:withCurveType:parameters:stops:` | `mgl_interpolate:withCurveType:parameters:stops:(x, 'linear', nil, %@)` | Produces continuous, smooth results by interpolating between pairs of input and output values (“stops”). Compared to the `mgl_interpolateWithCurveType:parameters:stops:` custom function, the input expression (that function’s target) is instead passed in as the first argument to this function.
 `mgl_step:from:stops:` | `mgl_step:from:stops:(x, 11, %@)` |Produces discrete, stepped results by evaluating a piecewise-constant function defined by pairs of input and output values ("stops"). Compared to the `mgl_stepWithMinimum:stops:` custom function, the input expression (that function’s target) is instead passed in as the first argument to this function.
 `mgl_join:` | `mgl_join({'Old', 'MacDonald'})` | Returns the result of concatenating together all the elements of an array in order. Compared to the `stringByAppendingString:` custom function, this function takes only one argument, which is an aggregate expression containing the strings to concatenate.
+`mgl_coalesce:` | `mgl_coalesce({x, y, z})` | Returns the first not null value from an array of expressions.
 `MGL_LET` | `MGL_LET('age', uppercase('old'), 'name', uppercase('MacDonald'), mgl_join({$age, $name}))` | Any number of variable names interspersed with their assigned `NSExpression` values, followed by an `NSExpression` that may contain references to those variables. Compared to the `mgl_expressionWithContext:` custom function, this function takes the variable names and values inline before the expression that contains references to those variables.
+`MGL_MATCH` | `MGL_MATCH(x, 0, 'zero match', 1, 'one match', 'two match', 'default')` | Evaluates the first expression and returns the value that matches the initial condition. After the first expression condition a pair of matching/return value should be added and a default value.
+`MGL_IF` | `MGL_IF(1 = 2, YES, 2 = 2, YES, NO)` | Returns the first value that meets the condition otherwise a default value. The expression conditions should be added in pairs of conditional/return value.
 
 The following custom functions are also available with the
 `+[NSExpression expressionForFunction:selectorName:arguments:]` method or the
diff --git a/platform/ios/docs/guides/For Style Authors.md b/platform/ios/docs/guides/For Style Authors.md
index fff6373995..9f02835fd1 100644
--- a/platform/ios/docs/guides/For Style Authors.md
+++ b/platform/ios/docs/guides/For Style Authors.md
@@ -344,9 +344,9 @@ In style specification | Method, function, or predicate type | Format string syn
 `>=`                   | `NSGreaterThanOrEqualToPredicateOperatorType` | `key >= value`
 `all`                  | `NSAndPredicateType` | `p0 AND … AND pn`
 `any`                  | `NSOrPredicateType` | `p0 OR … OR pn`
-`case`                 | `+[NSExpression expressionForConditional:trueExpression:falseExpression:]` | `TERNARY(condition, trueExpression, falseExpression)`
-`coalesce`             | |
-`match`                | |
+`case`                 | `MGL_IF` | `MGL_IF(1 = 2, YES, 2 = 2, YES, NO)` 
+`coalesce`             | `mgl_coalesce:` | `mgl_coalesce({x, y, z})`
+`match`                | `MGL_MATCH` | `MGL_MATCH(x, 0, 'zero match', 1, 'one match', 'two match', 'default')`
 `interpolate`          | `mgl_interpolate:withCurveType:parameters:stops:` |
 `step`                 | `mgl_step:withMinimum:stops:` |
 `let`                  | `mgl_expressionWithContext:` | `MGL_LET('ios', 11, 'macos', 10.13, $ios + $macos)`
diff --git a/platform/macos/docs/guides/For Style Authors.md b/platform/macos/docs/guides/For Style Authors.md
index a9d537eb15..0c8e5717b8 100644
--- a/platform/macos/docs/guides/For Style Authors.md
+++ b/platform/macos/docs/guides/For Style Authors.md
@@ -337,9 +337,9 @@ In style specification | Method, function, or predicate type | Format string syn
 `>=`                   | `NSGreaterThanOrEqualToPredicateOperatorType` | `key >= value`
 `all`                  | `NSAndPredicateType` | `p0 AND … AND pn`
 `any`                  | `NSOrPredicateType` | `p0 OR … OR pn`
-`case`                 | `+[NSExpression expressionForConditional:trueExpression:falseExpression:]` | `TERNARY(condition, trueExpression, falseExpression)`
-`coalesce`             | |
-`match`                | |
+`case`                 | `MGL_IF` | `MGL_IF(1 = 2, YES, 2 = 2, YES, NO)` 
+`coalesce`             | `mgl_coalesce:` | `mgl_coalesce({x, y, z})`
+`match`                | `MGL_MATCH` | `MGL_MATCH(x, 0, 'zero match', 1, 'one match', 'two match', 'default')`
 `interpolate`          | `mgl_interpolate:withCurveType:parameters:stops:` |
 `step`                 | `mgl_step:withMinimum:stops:` |
 `let`                  | `mgl_expressionWithContext:` | `MGL_LET('ios', 11, 'macos', 10.13, $ios + $macos)`