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Mar 11, 2018
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Grammar for expressions #264

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e185e42
Grammar for expressions
brauliobz Mar 10, 2018
049bbff
Reordered the expression prodctions to match the table of contents order
brauliobz Mar 11, 2018
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50 changes: 50 additions & 0 deletions src/expressions.md
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Original file line number Diff line number Diff line change
@@ -1,5 +1,31 @@
# Expressions

> **<sup>Syntax</sup>**
> _Expression_ :
> &nbsp;&nbsp; &nbsp;&nbsp; [_LiteralExpression_]
> &nbsp;&nbsp; | [_PathExpression_]
> &nbsp;&nbsp; | [_BlockExpression_]
> &nbsp;&nbsp; | [_OperatorExpression_]
> &nbsp;&nbsp; | [_GroupedExpression_]
> &nbsp;&nbsp; | [_ArrayExpression_]
> &nbsp;&nbsp; | [_IndexExpression_]
> &nbsp;&nbsp; | [_TupleExpression_]
> &nbsp;&nbsp; | [_TupleIndexingExpression_]
> &nbsp;&nbsp; | [_StructExpression_]
> &nbsp;&nbsp; | [_EnumerationVariantExpression_]
> &nbsp;&nbsp; | [_CallExpression_]
> &nbsp;&nbsp; | [_MethodCallExpression_]
> &nbsp;&nbsp; | [_FieldExpression_]
> &nbsp;&nbsp; | [_ClosureExpression_]
> &nbsp;&nbsp; | [_LoopExpression_]
> &nbsp;&nbsp; | [_ContinueExpression_]
> &nbsp;&nbsp; | [_BreakExpression_]
> &nbsp;&nbsp; | [_RangeExpression_]
> &nbsp;&nbsp; | [_IfExpression_]
> &nbsp;&nbsp; | [_IfLetExpression_]
> &nbsp;&nbsp; | [_MatchExpression_]
> &nbsp;&nbsp; | [_ReturnExpression_]

An expression may have two roles: it always produces a *value*, and it may have
*effects* (otherwise known as "side effects"). An expression *evaluates to* a
value, and has effects during *evaluation*. Many expressions contain
Expand Down Expand Up @@ -292,3 +318,27 @@ exist in `core::ops` and `core::cmp` with the same names.
[static variables]: items/static-items.html
[Temporary values]: #temporary-lifetimes
[Variables]: variables.html

[_ArrayExpression_]: expressions/array-expr.html
[_BlockExpression_]: expressions/block-expr.html
[_BreakExpression_]: expressions/loop-expr.html#break-expressions
[_CallExpression_]: expressions/call-expr.html
[_ClosureExpression_]: expressions/closure-expr.html
[_ContinueExpression_]: expressions/loop-expr.html#continue-expressions
[_EnumerationVariantExpression_]: expressions/enum-variant-expr.html
[_FieldExpression_]: expressions/field-expr.html
[_GroupedExpression_]: expressions/grouped-expr.html
[_IfExpression_]: expressions/if-expr.html#if-expressions
[_IfLetExpression_]: expressions/if-expr.html#if-let-expressions
[_IndexExpression_]: expressions/array-expr.html#array-and-slice-indexing-expressions
[_LiteralExpression_]: expressions/literal-expr.html
[_LoopExpression_]: expressions/loop-expr.html
[_MatchExpression_]: expressions/match-expr.html
[_MethodCallExpression_]: expressions/method-call-expr.html
[_OperatorExpression_]: expressions/operator-expr.html
[_PathExpression_]: expressions/path-expr.html
[_RangeExpression_]: expressions/range-expr.html
[_ReturnExpression_]: expressions/return-expr.html
[_StructExpression_]: expressions/struct-expr.html
[_TupleExpression_]: expressions/tuple-expr.html
[_TupleIndexingExpression_]: expressions/tuple-expr.html#tuple-indexing-expressions