ast: Improve documentation linking
This commit is contained in:
parent
ed6917070c
commit
55070bcc41
@ -5,8 +5,8 @@
|
||||
//!
|
||||
//! ## Syntax
|
||||
//! [`Start`]` := `[`Program`] \
|
||||
//! [`Program`] := [`statement::Stmt`]* EOI \
|
||||
//! [`Identifier`] := [`IDENTIFIER`](crate::token::token_type::Type::Identifier)
|
||||
//! [`Program`]` := `[`statement::Stmt`]`* EOI` \
|
||||
//! [`Identifier`]` := `[`IDENTIFIER`](crate::token::token_type::Type::Identifier)
|
||||
//!
|
||||
//! See [statement], [literal], and [expression] for more information.
|
||||
|
||||
@ -17,28 +17,28 @@ pub mod preamble {
|
||||
self, control,
|
||||
math::{self, operator},
|
||||
},
|
||||
literal, statement::Stmt,
|
||||
literal,
|
||||
statement::Stmt,
|
||||
visitor::{Visitor, Walk},
|
||||
Identifier, Program, Start,
|
||||
};
|
||||
}
|
||||
|
||||
|
||||
/// Marks the root of a tree
|
||||
/// # Syntax
|
||||
/// [`Start`] := [`Program`]
|
||||
/// [`Start`]` := `[`Program`]
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct Start(pub Program);
|
||||
|
||||
/// Contains an entire Conlang program
|
||||
/// # Syntax
|
||||
/// [`Program`] := [`statement::Stmt`]*
|
||||
/// [`Program`]` := `[`statement::Stmt`]`* EOI`
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct Program(pub Vec<statement::Stmt>);
|
||||
|
||||
/// An Identifier stores the name of an item
|
||||
/// # Syntax
|
||||
/// [`Identifier`] := [`IDENTIFIER`](crate::token::token_type::Type::Identifier)
|
||||
/// [`Identifier`]` := `[`IDENTIFIER`](crate::token::token_type::Type::Identifier)
|
||||
#[derive(Clone, Debug, Hash)]
|
||||
pub struct Identifier(pub String);
|
||||
|
||||
@ -102,16 +102,16 @@ pub mod literal {
|
||||
|
||||
/// Represents a literal value
|
||||
/// # Syntax
|
||||
/// [`Literal`] := [`String`] | [`char`] | [`bool`] | [`Float`] | [`u128`]
|
||||
/// [`Literal`]` := `[`String`]` | `[`char`]` | `[`bool`]` | `[`Float`]` | `[`u128`]
|
||||
#[derive(Clone, Debug)]
|
||||
pub enum Literal {
|
||||
/// Represents a literal string value
|
||||
/// # Syntax
|
||||
/// [`Literal::String`] := [`STRING`](crate::token::token_type::Type::String)
|
||||
/// [`Literal::String`]` := `[`STRING`](crate::token::token_type::Type::String)
|
||||
String(String),
|
||||
/// Represents a literal [char] value
|
||||
/// # Syntax
|
||||
/// [`Literal::Char`] := [`CHARACTER`](crate::token::token_type::Type::Character)
|
||||
/// [`Literal::Char`]` := `[`CHARACTER`](crate::token::token_type::Type::Character)
|
||||
Char(char),
|
||||
/// Represents a literal [bool] value
|
||||
/// # Syntax
|
||||
@ -121,17 +121,17 @@ pub mod literal {
|
||||
Bool(bool),
|
||||
/// Represents a literal float value
|
||||
/// # Syntax
|
||||
/// [`Float`] := [`FLOAT`](crate::token::token_type::Type::Float)
|
||||
/// [`Float`]` := `[`FLOAT`](crate::token::token_type::Type::Float)
|
||||
Float(Float),
|
||||
/// Represents a literal integer value
|
||||
/// # Syntax
|
||||
/// [`u128`] := [`INTEGER`](crate::token::token_type::Type::Integer)
|
||||
/// [`u128`]` := `[`INTEGER`](crate::token::token_type::Type::Integer)
|
||||
Int(u128),
|
||||
}
|
||||
|
||||
/// Represents a literal float value
|
||||
/// # Syntax
|
||||
/// [`Float`] := [`FLOAT`](crate::token::token_type::Type::Float)
|
||||
/// [`Float`]` := `[`FLOAT`](crate::token::token_type::Type::Float)
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct Float {
|
||||
pub sign: bool,
|
||||
@ -145,14 +145,14 @@ pub mod statement {
|
||||
//! A statement is an expression which evaluates to Empty
|
||||
//!
|
||||
//! # Syntax
|
||||
//! [`Stmt`] := [`Let`](Stmt::Let) | [`Expr`](Stmt::Expr)
|
||||
//! [`Let`](Stmt::Let) := `"let"` [`Identifier`] (`:` `Type`)? (`=` [`Expr`])? `;`
|
||||
//! [`Expr`](Stmt::Expr) := [`Expr`] `;`
|
||||
//! [`Stmt`]` := `[`Let`](Stmt::Let)` | `[`Expr`](Stmt::Expr)
|
||||
//! [`Let`](Stmt::Let)` := "let"` [`Identifier`] (`:` `Type`)? (`=` [`Expr`])? `;`
|
||||
//! [`Expr`](Stmt::Expr)` := `[`Expr`] `;`
|
||||
use super::{expression::Expr, Identifier};
|
||||
|
||||
/// Contains a statement
|
||||
/// # Syntax
|
||||
/// [`Stmt`] := [`Let`](Stmt::Let) | [`Expr`](Stmt::Expr)
|
||||
/// [`Stmt`]` := `[`Let`](Stmt::Let)` | `[`Expr`](Stmt::Expr)
|
||||
#[derive(Clone, Debug)]
|
||||
pub enum Stmt {
|
||||
/// Contains a variable declaration
|
||||
@ -174,42 +174,41 @@ pub mod statement {
|
||||
pub mod expression {
|
||||
//! # Expressions
|
||||
//!
|
||||
//! The [expression] is the backbone of Conlang: everything is an expression.
|
||||
//! The [expression] is the backbone of Conlang: almost everything is an expression.
|
||||
//!
|
||||
//! ## Grammar
|
||||
//! Higher number = higher precedence.
|
||||
//!
|
||||
//! | # | Node | Function
|
||||
//! |----|------------------:|:----------------------------------------------
|
||||
//! |---|------------------:|:----------------------------------------------
|
||||
//! | 0 | [`Expr`] | Contains an expression
|
||||
//! | 1 | [`Ignore`](math) | Ignores the preceding sub-expression's result
|
||||
//! | 2 | [`Assign`](math) | Assignment
|
||||
//! | 3 | [`Compare`](math) | Value Comparison
|
||||
//! | 4 | [`Logic`](math) | Boolean And, Or, Xor
|
||||
//! | 5 | [`Bitwise`](math) | Bitwise And, Or, Xor
|
||||
//! | 6 | [`Shift`](math) | Shift Left/Right
|
||||
//! | 7 | [`Term`](math) | Add, Subtract
|
||||
//! | 8 | [`Factor`](math) | Multiply, Divide, Remainder
|
||||
//! | 9 | [`Unary`](math) | Unary Dereference, Reference, Negate, Not
|
||||
//! | 10 | [`control::Flow`] | Branch expressions (`if`, `while`, `for`, `return`, `break`, `continue`), `else`
|
||||
//! | 10 | [`Group`] | Group expressions `(` [Expr]? `)` /* Can evaluate to Empty! */
|
||||
//! | 10 | [`Block`] | Block expressions `{` [Expr] `}`
|
||||
//! | 10 | [`Primary`] | Contains an [Identifier], [Literal](literal::Literal), [Block], [Group], or [Flow](control::Flow)
|
||||
//! | 1 | [`Assign`](math) | Assignment
|
||||
//! | 2 | [`Compare`](math) | Value Comparison
|
||||
//! | 3 | [`Logic`](math) | Boolean And, Or, Xor
|
||||
//! | 4 | [`Bitwise`](math) | Bitwise And, Or, Xor
|
||||
//! | 5 | [`Shift`](math) | Shift Left/Right
|
||||
//! | 6 | [`Term`](math) | Add, Subtract
|
||||
//! | 7 | [`Factor`](math) | Multiply, Divide, Remainder
|
||||
//! | 8 | [`Unary`](math) | Unary Dereference, Reference, Negate, Not
|
||||
//! | 9 | [`control::Flow`] | Branch expressions (`if`, `while`, `for`, `return`, `break`, `continue`)
|
||||
//! | 9 | [`Group`] | Group expressions `(` [Expr]? `)` /* Can evaluate to Empty! */
|
||||
//! | 9 | [`Block`] | Block expressions `{` [Expr] `}`
|
||||
//! | 9 | [`Primary`] | Contains an [Identifier], [Literal](literal::Literal), [Block], [Group], or [Flow](control::Flow)
|
||||
//!
|
||||
//! ## Syntax
|
||||
//! ```ignore
|
||||
//! Expr := control::Flow | math::Ignore
|
||||
//! Block := '{' Expr '}'
|
||||
//! Group := '(' Expr? ')'
|
||||
//! Primary := Identifier | Literal | Block | control::Branch
|
||||
//! ```
|
||||
//! [`Expr`]` := `[`math::Operation`] \
|
||||
//! [`Block`]` := '{' `[`Expr`]` '}'` \
|
||||
//! [`Group`]` := '(' `[`Expr`]`? ')'` \
|
||||
//! [`Primary`]` := `[`Identifier`]` | `[`Literal`](literal::Literal)` | `[`Block`]` |
|
||||
//! `[`Group`]` | `[`control::Flow`]
|
||||
//!
|
||||
//! See [control] and [math] for their respective production rules.
|
||||
use super::*;
|
||||
|
||||
/// Contains an expression
|
||||
///
|
||||
/// # Syntax
|
||||
/// [`Expr`] := [`math::Operation`]
|
||||
/// [`Expr`]` := `[`math::Operation`]
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct Expr {
|
||||
pub ignore: math::Operation,
|
||||
@ -218,12 +217,11 @@ pub mod expression {
|
||||
/// A [Primary] Expression is the expression with the highest precedence (i.e. the deepest
|
||||
/// derivation)
|
||||
/// # Syntax
|
||||
/// [`Primary`] :=
|
||||
/// [`IDENTIFIER`](Identifier)
|
||||
/// | [`Literal`](literal::Literal)
|
||||
/// | [`Block`]
|
||||
/// | [`Group`]
|
||||
/// | [`Branch`](control::Flow)
|
||||
/// [`Primary`]` := `[`IDENTIFIER`](Identifier)`
|
||||
/// | `[`Literal`](literal::Literal)`
|
||||
/// | `[`Block`]`
|
||||
/// | `[`Group`]`
|
||||
/// | `[`Branch`](control::Flow)
|
||||
#[derive(Clone, Debug)]
|
||||
pub enum Primary {
|
||||
Identifier(Identifier),
|
||||
@ -257,34 +255,38 @@ pub mod expression {
|
||||
//! Operator associativity is always left-to-right among members of the same group
|
||||
//!
|
||||
//! | # | Name | Operators | Associativity
|
||||
//! |---|----------:|:--------------------------------------|---------------
|
||||
//! |---|----------:|:----------------------------------------|---------------
|
||||
// | | TODO: Try | `?` |
|
||||
//! | 1 | Unary | `*` `&` `-` `!` | Right
|
||||
//! | 2 | Factor | `*` `/` `%` | Left to Right
|
||||
//! | 3 | Term | `+` `-` | Left to Right
|
||||
//! | 4 | Shift | `<<` `>>` | Left to Right
|
||||
//! | 5 | Bitwise | `&` <code>|</code> | Left to Right
|
||||
//! | 6 | Logic | `&&` <code>||</code> `^^` | Left to Right
|
||||
//! | 7 | Compare | `<` `<=` `==` `!=` `>=` `>` | Left to Right
|
||||
//! | 1 | Unary | [`*` `&` `-` `!`][3] | Right
|
||||
//! | 2 | Factor | [`*` `/` `%`][4] | Left to Right
|
||||
//! | 3 | Term | [`+` `-`][4] | Left to Right
|
||||
//! | 4 | Shift | [`<<` `>>`][4] | Left to Right
|
||||
//! | 5 | Bitwise | [`&` <code>|</code>][4] | Left to Right
|
||||
//! | 6 | Logic | [`&&` <code>||</code> `^^`][4]| Left to Right
|
||||
//! | 7 | Compare | [`<` `<=` `==` `!=` `>=` `>`][4] | Left to Right
|
||||
#![doc = concat!( //| |
|
||||
r" | 8 | Assign |", r"`*=`, `/=`, `%=`, `+=`, `-=`, ",//|
|
||||
r" | 8 | Assign | [`*=`, `/=`, `%=`, `+=`, `-=`, ", //|
|
||||
/* | | |*/ r"`&=`, <code>|=</code>, ", //|
|
||||
/* | | |*/ r"`^=`, `<<=`, `>>=`", r"| Right to Left")]
|
||||
/* | | |*/ r"`^=`, `<<=`, `>>=`][4]", r"| Left to Right")]
|
||||
//!
|
||||
//! <!-- Note: '|' == '|' /-->
|
||||
//!
|
||||
//! ## Syntax
|
||||
//! ```ignore
|
||||
//! /* All precedence levels other than Unary fold into Binary */
|
||||
//! Assign := Compare (AssignOp Compare)*
|
||||
//! Compare := Logic (CompareOp Logic )*
|
||||
//! Logic := Bitwise (LogicOp Bitwise)*
|
||||
//! Bitwise := Shift (BitwiseOp Shift )*
|
||||
//! Shift := Term (ShiftOp Term )*
|
||||
//! Term := Factor (TermOp Factor )*
|
||||
//! Factor := Unary (FactorOp Unary )*
|
||||
//! Unary := (UnaryOp)* Primary
|
||||
//! ```
|
||||
//! All precedence levels other than [Unary][1] fold into [Binary][2]
|
||||
//!
|
||||
//! [`Assign`][2]` := `[`Compare`][2]` (`[`AssignOp`][4]` `[`Compare`][2]`)*` \
|
||||
//! [`Compare`][2]` := `[`Logic`][2]` (`[`CompareOp`][4]` `[`Logic`][2]` )*` \
|
||||
//! [`Logic`][2]` := `[`Bitwise`][2]` (`[`LogicOp`][4]` `[`Bitwise`][2]`)*` \
|
||||
//! [`Bitwise`][2]` := `[`Shift`][2]` (`[`BitwiseOp`][4]` `[`Shift`][2]` )*` \
|
||||
//! [`Shift`][2]` := `[`Term`][2]` (`[`ShiftOp`][4]` `[`Term`][2]` )*` \
|
||||
//! [`Term`][2]` := `[`Factor`][2]` (`[`TermOp`][4]` `[`Factor`][2]` )*` \
|
||||
//! [`Factor`][2]` := `[`Unary`][1]` (`[`FactorOp`][4]` `[`Unary`][1]` )*` \
|
||||
//! [`Unary`][1]` := (`[`UnaryOp`][3]`)* `[`Primary`]
|
||||
//!
|
||||
//! [1]: Operation::Unary
|
||||
//! [2]: Operation::Binary
|
||||
//! [3]: operator::Unary
|
||||
//! [4]: operator::Binary
|
||||
use super::*;
|
||||
|
||||
/// An Operation is a tree of [operands](Primary) and [operators](operator).
|
||||
@ -309,22 +311,11 @@ pub mod expression {
|
||||
}
|
||||
|
||||
pub mod operator {
|
||||
//! | # | [Operators](self) | Associativity
|
||||
//! |---|---------------------------------------|--------------
|
||||
//! | 0 |[`*`, `&`, `-`, `!`](Unary) | Left to Right
|
||||
//! | 1 | `*`, `/`, `%` | Left to Right
|
||||
//! | 2 | `+`, `-` | Left to Right
|
||||
//! | 3 | `<<`, `>>` | Left to Right
|
||||
//! | 4 | `&`, <code>|</code>, `^` | Left to Right
|
||||
//! | 5 | `&&`, <code>||</code>, `^^` | Left to Right
|
||||
//! | 6 | `>`. `>=`. `==`. `!=`. `<=`. `<` | Left to Right
|
||||
#![doc = concat!(
|
||||
r"| 7 |", r"`*=`, `/=`, `%=`, `+=`, `-=`, ",//|
|
||||
/* | |*/ r"`&=`, <code>|=</code>, ", //|
|
||||
/* | |*/ r"`^=`, `<<=`, `>>=`, `=`", r"| Left to Right")]
|
||||
//! | 8 | `,` |
|
||||
//! # [Unary] and [Binary] operators
|
||||
//!
|
||||
//! An Operator represents the action taken during an [operation](super::Operation)
|
||||
|
||||
/// Operators which take a single argument
|
||||
/// # Operators which take a single argument
|
||||
///
|
||||
/// (`*`, `&`, `-`, `!`, `@`, `#`, `~`)
|
||||
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
||||
@ -346,52 +337,61 @@ pub mod expression {
|
||||
/// `~`: Undefined
|
||||
Tilde,
|
||||
}
|
||||
/// Operators which take two arguments
|
||||
/// # Operators which take two arguments
|
||||
/// ## Term operators:
|
||||
/// [`*`](Binary::Mul), [`/`](Binary::Div), [`%`](Binary::Rem)
|
||||
/// ## Factor operators
|
||||
/// [`+`](Binary::Add), [`-`](Binary::Sub)
|
||||
/// ## Shift operators
|
||||
/// [`<<`](Binary::Lsh), [`>>`](Binary::Rsh)
|
||||
/// ## Bitwise operators
|
||||
/// [`&`](Binary::BitAnd), [`|`](Binary::BitOr), [`^`](Binary::BitXor)
|
||||
/// ## Logic operators
|
||||
/// [`&&`](Binary::LogAnd), [`||`](Binary::LogOr), [`^^`](Binary::LogXor)
|
||||
/// ## Range operators
|
||||
/// [`..`](Binary::RangeExc), [`..=`](Binary::RangeInc)
|
||||
/// ## Comparison operators
|
||||
/// [`<`](Binary::Less), [`<=`](Binary::LessEq), [`==`](Binary::Equal),
|
||||
/// [`!=`](Binary::NotEq), [`>=`](Binary::GreaterEq), [`>`](Binary::Greater),
|
||||
/// ## Assignment operators
|
||||
/// [`=`](Binary::Assign), [`+=`](Binary::AddAssign), [`-=`](Binary::SubAssign),
|
||||
/// [`*=`](Binary::MulAssign), [`/=`](Binary::DivAssign), [`%=`](Binary::RemAssign),
|
||||
/// [`&=`](Binary::BitAndAssign), [`|=`](Binary::BitOrAssign),
|
||||
/// [`^=`](Binary::BitXorAssign) [`<<=`](Binary::ShlAssign),
|
||||
/// [`>>=`](Binary::ShrAssign)
|
||||
|
||||
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
||||
pub enum Binary {
|
||||
// Term operators
|
||||
/// `*`: Multiplication
|
||||
Mul,
|
||||
/// `/`: Division
|
||||
Div,
|
||||
/// `%`: Remainder
|
||||
Rem,
|
||||
|
||||
// Factor operators
|
||||
/// `+`: Addition
|
||||
Add,
|
||||
/// `-`: Subtraction
|
||||
Sub,
|
||||
|
||||
// Shift operators
|
||||
/// `<<`: Left Shift
|
||||
Lsh,
|
||||
/// `>>`: Right Shift
|
||||
Rsh,
|
||||
|
||||
// Bitwise operators
|
||||
/// `&`: Bitwise AND
|
||||
BitAnd,
|
||||
/// `|`: Bitwise OR
|
||||
BitOr,
|
||||
/// `^`: Bitwise XOR
|
||||
BitXor,
|
||||
|
||||
// Logic operators
|
||||
/// `&&`: Short-circuiting logical AND
|
||||
LogAnd,
|
||||
/// `||`: Short-circuiting logical OR
|
||||
LogOr,
|
||||
/// `^^`: **Non-short-circuiting** logical XOR
|
||||
LogXor,
|
||||
|
||||
// Range operators
|
||||
/// `..`: Exclusive range
|
||||
RangeExc,
|
||||
/// `..=`: Inclusive range
|
||||
RangeInc,
|
||||
|
||||
// Comparison operators
|
||||
/// `<`: Less-than Comparison
|
||||
Less,
|
||||
/// `<=`: Less-than or Equal Comparison
|
||||
@ -404,8 +404,6 @@ pub mod expression {
|
||||
GreaterEq,
|
||||
/// `>`: Greater-than Comparison
|
||||
Greater,
|
||||
|
||||
// Assignment operators
|
||||
/// `=`: Assignment
|
||||
Assign,
|
||||
/// `+=`: Additive In-place Assignment
|
||||
@ -458,15 +456,17 @@ pub mod expression {
|
||||
//!
|
||||
//! [`continue` expressions][7] skip to the next iteration of a loop
|
||||
//! # Syntax
|
||||
//! ```rust,ignore
|
||||
//! Branch := While | If | For
|
||||
//! If := "if" Expr Block Else?
|
||||
//! While := "while" Expr Block Else?
|
||||
//! For := "for" Identifier "in" Expr Block Else?
|
||||
//! Else := "else" Block
|
||||
//! [`Flow`]` := `[`While`]` | `[`If`]` | `[`For`]` |
|
||||
//! `[`Break`]` | `[`Return`]` | `[`Continue`] \
|
||||
//!
|
||||
//! Break := "break" Expr
|
||||
//! ```
|
||||
//! [`While`]` := "while" `[`Expr`]` `[`Block`]` `[`Else`]`?` \
|
||||
//! [`If`]` := "if" `[`Expr`]` `[`Block`]` `[`Else`]`?` \
|
||||
//! [`For`]` := "for" `[`Identifier`]` "in" `[`Expr`]` `[`Block`]` `[`Else`]`?` \
|
||||
//! [`Else`]` := "else" `[`Block`] \
|
||||
//!
|
||||
//! [`Break`]` := "break" `[`Expr`] \
|
||||
//! [`Return`]` := "return" `[`Expr`] \
|
||||
//! [`Continue`]` := "continue"`
|
||||
//!
|
||||
//! [1]: If
|
||||
//! [2]: While
|
||||
@ -830,7 +830,7 @@ pub mod visitor {
|
||||
|
||||
/// Visit a [Primary] expression
|
||||
///
|
||||
/// [Primary] := [Identifier] | [Literal] | [Block] | [Flow]
|
||||
/// [`Primary`]` := `[`Identifier`]` | `[`Literal`]` | `[`Block`]` | `[`Flow`]
|
||||
fn visit_primary(&mut self, expr: &Primary) -> R {
|
||||
match expr {
|
||||
Primary::Identifier(v) => self.visit_identifier(v),
|
||||
@ -843,7 +843,8 @@ pub mod visitor {
|
||||
|
||||
/// Visit a [Flow] expression.
|
||||
///
|
||||
/// [Flow] := [While] | [If] | [For]
|
||||
/// [`Flow`]` := `[`While`]` | `[`If`]` | `[`For`]`
|
||||
/// | `[`Continue`]` | `[`Return`]` | `[`Break`]
|
||||
fn visit_branch_expr(&mut self, expr: &Flow) -> R {
|
||||
match expr {
|
||||
Flow::While(e) => self.visit_while(e),
|
||||
@ -874,7 +875,7 @@ pub mod visitor {
|
||||
fn visit_identifier(&mut self, ident: &Identifier) -> R;
|
||||
/// Visit a [Literal]
|
||||
///
|
||||
/// [Literal] := [String] | [char] | [bool] | [Float] | [u128]
|
||||
/// [`Literal`]` := `[`String`]` | `[`char`]` | `[`bool`]` | `[`Float`]` | `[`u128`]
|
||||
fn visit_literal(&mut self, literal: &Literal) -> R {
|
||||
match literal {
|
||||
Literal::String(l) => self.visit_string_literal(l),
|
||||
|
Loading…
Reference in New Issue
Block a user