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< ol class = "chapter" > < li class = "chapter-item expanded " > < a href = "specification/index.html" > < strong aria-hidden = "true" > 1.< / strong > Specification< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "specification/tokens/index.html" > < strong aria-hidden = "true" > 1.1.< / strong > Tokens< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "specification/tokens/token-format.html" > < strong aria-hidden = "true" > 1.1.1.< / strong > Token format< / a > < / li > < li class = "chapter-item expanded " > < a href = "specification/tokens/token-kinds.html" > < strong aria-hidden = "true" > 1.1.2.< / strong > Token Kinds< / a > < / li > < li > < ol class = "section" > < li class = "chapter-item expanded " > < a href = "specification/tokens/kinds/operators.html" > < strong aria-hidden = "true" > 1.1.2.1.< / strong > Operators< / a > < / li > < li class = "chapter-item expanded " > < a href = "specification/tokens/kinds/keywords.html" > < strong aria-hidden = "true" > 1.1.2.2.< / strong > Keywords< / a > < / li > < li class = "chapter-item expanded " > < a href = "specification/tokens/kinds/identifiers.html" > < strong aria-hidden = "true" > 1.1.2.3.< / strong > Identifiers< / a > < / li > < li class = "chapter-item expanded " > < a href = "specification/tokens/kinds/literals.html" > < strong aria-hidden = "true" > 1.1.2.4.< / strong > Literals< / a > < / li > < li class = "chapter-item expanded " > < a href = "specification/tokens/kinds/brackets.html" > < strong aria-hidden = "true" > 1.1.2.5.< / strong > Brackets< / a > < / li > < / ol > < / li > < / ol > < / li > < li class = "chapter-item expanded " > < a href = "specification/parser/index.html" > < strong aria-hidden = "true" > 1.2.< / strong > Parser< / a > < / li > < li class = "chapter-item expanded " > < a href = "examples/index.html" > < strong aria-hidden = "true" > 1.3.< / strong > Examples< / a > < / li > < / ol > < / li > < / ol >
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< h1 id = "specification" > < a class = "header" href = "#specification" > Specification< / a > < / h1 >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "tokens" > < a class = "header" href = "#tokens" > Tokens< / a > < / h1 >
< p > This chapter describes the tokens specification. All of the tokens in the design are described in this section.< / p >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "token-format" > < a class = "header" href = "#token-format" > Token format< / a > < / h1 >
< p > < a href = "https://github.com/SymboScript/SymboScript/blob/main/types/src/lexer.rs#L4-L15" > Token< / a > < / p >
< pre > < pre class = "playground" > < code class = "language-rust" > < span class = "boring" > #![allow(unused)]
< / span > < span class = "boring" > fn main() {
< / span > pub struct Token {
/// Token Type
pub kind: TokenKind,
/// Start offset in source
pub start: usize,
/// End offset in source
pub end: usize,
pub value: TokenValue,
}
< span class = "boring" > }< / span > < / code > < / pre > < / pre >
< p > < a href = "https://github.com/SymboScript/SymboScript/blob/main/types/src/lexer.rs#L110-L114" > TokenValue< / a > < / p >
< pre > < pre class = "playground" > < code class = "language-rust" > < span class = "boring" > #![allow(unused)]
< / span > < span class = "boring" > fn main() {
< / span > pub enum TokenValue {
None,
Number(f64),
String(String),
}
< span class = "boring" > }< / span > < / code > < / pre > < / pre >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "token-kinds" > < a class = "header" href = "#token-kinds" > Token Kinds< / a > < / h1 >
< p > This chapter describes the token kinds used in the spec.< / p >
< p > < a href = "https://github.com/SymboScript/SymboScript/blob/main/types/src/lexer.rs#L18-L107" > Kinds< / a > < / p >
< pre > < pre class = "playground" > < code class = "language-rust" > < span class = "boring" > #![allow(unused)]
< / span > < span class = "boring" > fn main() {
< / span > pub enum TokenKind {
Eof, // end of file
Comment,
Unexpected,
Semicolon,
Comma,
Colon,
Dot,
// Operators
Plus,
Minus,
Star,
Slash,
Power,
Range,
Modulo,
// Bitwise operators (Keyword2Operator)
BitAnd,
BitOr,
BitNot,
BitXor,
BitLeftShift,
BitRightShift,
// Unary operators
PlusPlus,
MinusMinus,
Question,
// Logic operators (Keyword2Operator)
And,
Or,
Xor,
Not,
/// Assignments operators (+=, -=, *=, /=...)
Assign,
FormulaAssign,
PlusAssign,
MinusAssign,
MultiplyAssign,
DivideAssign,
PowerAssign,
ModuloAssign,
// Comparison operators
Equal,
NotEqual,
Less,
LessEqual,
Greater,
GreaterEqual,
// Brackets
LParen,
RParen,
LBrace,
RBrace,
LBracket,
RBracket,
// Identifiers
Identifier,
// Literals
Number,
Str,
// --- Keywords ---
// Keyword literals
True,
False,
// Keywords
If,
Else,
While,
For,
Loop,
Let,
Return,
Break,
Continue,
Function,
In,
}
< span class = "boring" > }< / span > < / code > < / pre > < / pre >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "operators" > < a class = "header" href = "#operators" > Operators< / a > < / h1 >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "keywords" > < a class = "header" href = "#keywords" > Keywords< / a > < / h1 >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "identifiers" > < a class = "header" href = "#identifiers" > Identifiers< / a > < / h1 >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "literals" > < a class = "header" href = "#literals" > Literals< / a > < / h1 >
< p > In SymboScript exists only three kinds of token literals: strings, numbers, booleans.< / p >
< h2 id = "strings" > < a class = "header" href = "#strings" > Strings< / a > < / h2 >
< p > Strings are enclosed in double quotes, single quotes or backticks.< / p >
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< pre > < code class = "language-symboscript" > " hello"
" hello"
`hello`
" hello\nworld"
'hello" world'
" hello ' world"
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< / code > < / pre >
< h2 id = "numbers" > < a class = "header" href = "#numbers" > Numbers< / a > < / h2 >
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< pre > < code class = "language-symboscript" > 1 .1
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1.1
1e1
1E1
1.1e1
1.1E1
< / code > < / pre >
< h2 id = "booleans" > < a class = "header" href = "#booleans" > Booleans< / a > < / h2 >
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< pre > < code class = "language-symboscript" > true
false
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< / code > < / pre >
< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "brackets" > < a class = "header" href = "#brackets" > Brackets< / a > < / h1 >
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< div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "parser" > < a class = "header" href = "#parser" > Parser< / a > < / h1 >
< h2 id = "expressionss" > < a class = "header" href = "#expressionss" > Expressionss< / a > < / h2 >
< h3 id = "operator-priority" > < a class = "header" href = "#operator-priority" > Operator priority< / a > < / h3 >
< div class = "table-wrapper" > < table > < thead > < tr > < th > Operator/Expression< / th > < th > Associativity< / th > < th > Parser fn name< / th > < th > Evaluation priority< / th > < th > Implementation< / th > < / tr > < / thead > < tbody >
< tr > < td > < code > !< / code > < code > ++< / code > < code > --< / code > < code > ()< / code > Literals Identifiers< / td > < td > Left to Right< / td > < td > factor< / td > < td > 1< / td > < td > ✅< / td > < / tr >
< tr > < td > < code > ^< / code > < / td > < td > Left to Left< / td > < td > power< / td > < td > 2< / td > < td > ✅< / td > < / tr >
< tr > < td > < code > *< / code > < code > /< / code > < code > %< / code > < / td > < td > Left to Right< / td > < td > term< / td > < td > 3< / td > < td > ✅< / td > < / tr >
< tr > < td > < code > +< / code > < code > -< / code > < / td > < td > Left to Right< / td > < td > add_sub< / td > < td > 4< / td > < td > ✅< / td > < / tr >
< tr > < td > < code > > > < / code > < code > < < < / code > < / td > < td > Left to Right< / td > < td > shift< / td > < td > 5< / td > < td > ❌< / td > < / tr >
< tr > < td > < code > < < / code > < code > < =< / code > < code > > < / code > < code > > =< / code > < code > ==< / code > < code > !=< / code > < / td > < td > Left to Right< / td > < td > cmp< / td > < td > 6< / td > < td > ❌< / td > < / tr >
< tr > < td > < code > & < / code > < / td > < td > Left to Right< / td > < td > bit_and< / td > < td > 7< / td > < td > ❌< / td > < / tr >
< tr > < td > < code > |< / code > < / td > < td > Left to Right< / td > < td > bit_or< / td > < td > 8< / td > < td > ❌< / td > < / tr >
< tr > < td > < code > ==< / code > < code > !=< / code > < code > < < / code > < code > < =< / code > < code > > < / code > < code > > =< / code > < / td > < td > Left to Right< / td > < td > cmp< / td > < td > 9< / td > < td > ❌< / td > < / tr >
< tr > < td > < code > & & < / code > < / td > < td > Left to Right< / td > < td > logical_and< / td > < td > 10< / td > < td > ❌< / td > < / tr >
< tr > < td > < code > ||< / code > < / td > < td > Left to Right< / td > < td > logical_or< / td > < td > 11< / td > < td > ❌< / td > < / tr >
< / tbody > < / table >
< / div > < div style = "break-before: page; page-break-before: always;" > < / div > < h1 id = "examples" > < a class = "header" href = "#examples" > Examples< / a > < / h1 >
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< p > This is chapter about how the code in SymboScript looks.< / p >
< / main >
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