94 lines
3.7 KiB
JavaScript
94 lines
3.7 KiB
JavaScript
// -*- javascript -*-
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// Syntactic extensions to ES5 for Syndicate/js. See compiler.js for
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// the rest of the translator.
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Syndicate <: ES5 {
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//---------------------------------------------------------------------------
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// Extensions to expressions.
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Statement
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+= ActorStatement
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| DataspaceStatement
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| ActorFacetStatement
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| ActorEndpointStatement
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| AssertionTypeDeclarationStatement
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| FieldDeclarationStatement
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| SendMessageStatement
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FunctionBodyBlock = "{" FunctionBody "}" // odd that this isn't in es5.ohm somewhere
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ActorStatement
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= spawnStar (named Expression<withIn>)? FunctionBodyBlock -- noReact
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| spawn (named Expression<withIn>)? FunctionBodyBlock -- withReact
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DataspaceStatement
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= ground dataspace identifier? FunctionBodyBlock -- ground
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| dataspace FunctionBodyBlock -- normal
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ActorFacetStatement
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= react FunctionBodyBlock
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ActorEndpointStatement
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= on start FunctionBodyBlock -- start
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| on stop FunctionBodyBlock -- stop
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| assert FacetPattern AssertWhenClause? #(sc) -- assert
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| on FacetEventPattern FunctionBodyBlock -- event
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| on event identifier FunctionBodyBlock -- onEvent
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| stop on FacetTransitionEventPattern FunctionBodyBlock -- stopOnWithCont
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| stop on FacetTransitionEventPattern #(sc) -- stopOnNoCont
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| dataflow FunctionBodyBlock -- dataflow
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| during FacetPattern FunctionBodyBlock -- during
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| during FacetPattern spawn (named Expression<withIn>)? FunctionBodyBlock -- duringSpawn
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AssertWhenClause = when "(" Expression<withIn> ")"
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AssertionTypeDeclarationStatement
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= (assertion | message) type identifier "(" FormalParameterList ")" ("=" stringLiteral)? #(sc)
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FieldDeclarationStatement = field MemberExpression ("=" AssignmentExpression<withIn>)? #(sc)
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MemberExpression += field MemberExpression -- fieldRefExp
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UnaryExpression += delete field MemberExpression -- fieldDelExp
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SendMessageStatement = "::" Expression<withIn> #(sc)
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FacetEventPattern
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= message FacetPattern -- messageEvent
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| asserted FacetPattern -- assertedEvent
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| retracted FacetPattern -- retractedEvent
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FacetTransitionEventPattern
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= FacetEventPattern -- facetEvent
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| "(" Expression<withIn> ")" -- risingEdge
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FacetPattern
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= LeftHandSideExpression metalevel decimalIntegerLiteral -- withMetalevel
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| LeftHandSideExpression -- noMetalevel
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//---------------------------------------------------------------------------
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// Keywords. We don't add them to the "keyword" production because
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// we don't want to make them unavailable to programs as
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// identifiers.
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spawnStar = "spawn*" ~identifierPart
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spawn = "spawn" ~("*" | identifierPart)
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assert = "assert" ~identifierPart
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asserted = "asserted" ~identifierPart
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assertion = "assertion" ~identifierPart
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dataflow = "dataflow" ~identifierPart
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dataspace = "dataspace" ~identifierPart
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during = "during" ~identifierPart
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event = "event" ~identifierPart
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field = "field" ~identifierPart
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ground = "ground" ~identifierPart
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message = "message" ~identifierPart
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metalevel = "metalevel" ~identifierPart
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named = "named" ~identifierPart
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on = "on" ~identifierPart
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react = "react" ~identifierPart
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retracted = "retracted" ~identifierPart
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start = "start" ~identifierPart
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stop = "stop" ~identifierPart
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type = "type" ~identifierPart
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when = "when" ~identifierPart
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}
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