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module examples::smallOO::Syntax

rascal-0.34.0
typepal-0.8.10

Usage​

import examples::smallOO::Syntax;

Source code​

http://github.com/usethesource/typepal/src/examples/smallOO/Syntax.rsc

Dependencies​

extend lang::std::Layout;

syntax Module​

start syntax Module = "module" Identifier moduleName Import* imports Declaration* declarations;

syntax Import​

syntax Import = "import" Identifier moduleName;

syntax Declaration​

syntax Declaration 
    = "class" Identifier className "{" Declaration* declarations "}"
    | Type returnType Identifier functionName "(" {Parameter ","}* parameters ")" "=" Expression returnExpression ";"
    | Type fieldType Identifier fieldName ";"
    ;

syntax Parameter​

syntax Parameter = Type tp Identifier name;

syntax Expression​

syntax Expression
    = Identifier id
    | Expression "." Identifier id
    | Literal l
    | Identifier functionName "(" {Expression ","}* parameters ")"
    | Expression "." Identifier functionName "(" {Expression ","}* parameters ")"
    | Expression "+" Expression
    ;

syntax Identifier​

lexical Identifier = ([a-z A-Z _][a-z A-Z _ 0-9]* !>> [a-z A-Z _ 0-9]) \ Keywords;

syntax Literal​

lexical Literal
    = Integer
    | String
    ;

syntax Integer​

lexical Integer = [0-9]+ !>> [0-9];

syntax String​

lexical String = [\"] ![\"]* [\"];

syntax Type​

lexical Type
    = "int"
    | "str"
    | Identifier className
    ;

syntax Keywords​

keyword Keywords = "module" | "class" | "import" | "int" | "str";