Category Description
Binary operations +, -, *, /, ^Unary operations +(number/string), -(numbers only), !(booleans)Comparison operations >, >=, <, <=, ==, !=Logic operations and, or (short-circuit)shellRun shell command shellpipeRun shell pipeline (syntax sugar for shell)
Type Description
Number internal representation will be a f64 (for both integers and floats) Boolean either true or false String Anything inside double quotes Array Same type items in [], separated by , (e.g., ["monday", "sunday"]) Mapping Not directly defined or passed to functions, but can be returned. Access attributes using . by key (e.g., object.key).
The detail grammar rules, only come here when something is really hard to figure out and you want to figure it out by yourself.
Otherwise, join and ask me in Oxiida Zulip .
Non-terminal Production
Program Statement*
Non-terminal Production
Statement SimpleStmt ";" | Block | IfStmt | WhileStmt | ForStmtSimpleStmt Expression | "print" Expression | "require" IdentifierListBlock "seq" "{" Statement* "}""para" "{" Statement* "}""{" Statement* "}"IfStmt "if" "(" Expression ")" Statement"if" "(" Expression ")" Statement "else" StatementWhileStmt "while" "(" Expression ")" StatementForStmt "for" Expression "in" Array StatementIdentifierList identifier ( "," identifier )*
Level Non-terminal Production
8 Assignment Shell "=" Expression | Logic7 Logic Equality { ( "and" \| "or" ) Equality }6 Equality Compare { ( "==" \| "!=" ) Compare }5 Compare Term { ( ">" \| ">=" \| "<" \| "<=" ) Term }4 Term Factor { ( "+" \| "-" ) Factor }3 Factor Power { ( "*" \| "/" ) Power }2 Power Unary { "^" Unary }1 Unary ( "+" \| "-" \| "!" ) Unary | Attribute
Non-terminal Production
Attribute CallPostfix { "." identifier }CallPostfix Primary { "(" [ Expression { "," Expression } ] ")" }Primary "true" | "false" | "nil"number | identifier | string"(" Expression ")"Array | Shell | PipeShell
Non-terminal Production
Array "[" [ Shell { "," Shell } ] "]"PipeShell "shellpipe" "{" PipeShellExpr "}"PipeShellExpr `PipeShellExpr " ShellUnit string string*Shell "shell" "{" Term [, "[" Term { "," Term } "]"] [, Shell] "}" | Logic
Category Lexemes (examples)
Keywords if, else, while, for, seq, para, print, require, and, or, in, true, false, nil, shell, shellpipeOperators = == != < <= > >= + - * / ^ ! .Delimiters ( ) { } [ ]Literals number (f64), stringIdentifiers identifier
Precedence Operators
1 (highest) + - ! (unary)2 ^3 * /4 + - (binary)5 < <= > >=6 == !=7 and or8 (lowest) =