Struct naga::front::wgsl::parse::Parser

pub struct Parser {
    rules: Vec<(Rule, usize)>,
}

Fields

rules: Vec<(Rule, usize)>

Implementations

impl Parser

pub const fn new() -> Self

fn reset(&mut self)

fn push_rule_span(&mut self, rule: Rule, lexer: &mut Lexer<'_>)

fn pop_rule_span(&mut self, lexer: &Lexer<'_>) -> Span

fn peek_rule_span(&mut self, lexer: &Lexer<'_>) -> Span

fn switch_value<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<SwitchValue<'a>, Error<'a>>

fn constructor_type<'a>( &mut self, lexer: &mut Lexer<'a>, word: &'a str, span: Span, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Option<ConstructorType<'a>>, Error<'a>>

Decide if we’re looking at a construction expression, and return its type if so.

If the identifier word is a type-defining keyword, then return a ConstructorType value describing the type to build. Return an error if the type is not constructible (like sampler).

If word isn’t a type name, then return None.

fn arguments<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Vec<Handle<Expression<'a>>>, Error<'a>>

Expects name to be consumed (not in lexer).

fn function_call<'a>( &mut self, lexer: &mut Lexer<'a>, name: &'a str, name_span: Span, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Handle<Expression<'a>>, Error<'a>>

Expects Rule::PrimaryExpr or Rule::SingularExpr on top; does not pop it. Expects name to be consumed (not in lexer).

fn ident_expr<'a>( &mut self, name: &'a str, name_span: Span, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> IdentExpr<'a>

fn primary_expression<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Handle<Expression<'a>>, Error<'a>>

fn postfix<'a>( &mut self, span_start: usize, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, expr: Handle<Expression<'a>>, ) -> Result<Handle<Expression<'a>>, Error<'a>>

fn unary_expression<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Handle<Expression<'a>>, Error<'a>>

Parse a unary_expression.

fn singular_expression<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Handle<Expression<'a>>, Error<'a>>

Parse a singular_expression.

fn equality_expression<'a>( &mut self, lexer: &mut Lexer<'a>, context: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Handle<Expression<'a>>, Error<'a>>

fn general_expression<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Handle<Expression<'a>>, Error<'a>>

fn general_expression_with_span<'a>( &mut self, lexer: &mut Lexer<'a>, context: &mut ExpressionContext<'a, '_, '_>, ) -> Result<(Handle<Expression<'a>>, Span), Error<'a>>

fn variable_decl<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<GlobalVariable<'a>, Error<'a>>

fn struct_body<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Vec<StructMember<'a>>, Error<'a>>

fn singular_generic<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<(Handle<Type<'a>>, Span), Error<'a>>

Parses <T>, returning T and span of T

fn matrix_with_type<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, columns: VectorSize, rows: VectorSize, ) -> Result<Type<'a>, Error<'a>>

fn type_decl_impl<'a>( &mut self, lexer: &mut Lexer<'a>, word: &'a str, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Option<Type<'a>>, Error<'a>>

const fn check_texture_sample_type( scalar: Scalar, span: Span, ) -> Result<(), Error<'static>>

fn type_decl<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Handle<Type<'a>>, Error<'a>>

Parse type declaration of a given name.

fn assignment_op_and_rhs<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, block: &mut Block<'a>, target: Handle<Expression<'a>>, span_start: usize, ) -> Result<(), Error<'a>>

fn assignment_statement<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, block: &mut Block<'a>, ) -> Result<(), Error<'a>>

Parse an assignment statement (will also parse increment and decrement statements)

fn function_statement<'a>( &mut self, lexer: &mut Lexer<'a>, ident: &'a str, ident_span: Span, span_start: usize, context: &mut ExpressionContext<'a, '_, '_>, block: &mut Block<'a>, ) -> Result<(), Error<'a>>

Parse a function call statement. Expects ident to be consumed (not in the lexer).

fn function_call_or_assignment_statement<'a>( &mut self, lexer: &mut Lexer<'a>, context: &mut ExpressionContext<'a, '_, '_>, block: &mut Block<'a>, ) -> Result<(), Error<'a>>

fn statement<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, block: &mut Block<'a>, brace_nesting_level: u8, ) -> Result<(), Error<'a>>

fn loop<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, brace_nesting_level: u8, ) -> Result<StatementKind<'a>, Error<'a>>

fn block<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, brace_nesting_level: u8, ) -> Result<(Block<'a>, Span), Error<'a>>

compound_statement

fn varying_binding<'a>( &mut self, lexer: &mut Lexer<'a>, ctx: &mut ExpressionContext<'a, '_, '_>, ) -> Result<Option<Binding<'a>>, Error<'a>>

fn function_decl<'a>( &mut self, lexer: &mut Lexer<'a>, out: &mut TranslationUnit<'a>, dependencies: &mut FastIndexSet<Dependency<'a>>, ) -> Result<Function<'a>, Error<'a>>

fn directive_ident_list<'a>( &self, lexer: &mut Lexer<'a>, handler: impl FnMut(&'a str, Span) -> Result<(), Error<'a>>, ) -> Result<(), Error<'a>>

fn global_decl<'a>( &mut self, lexer: &mut Lexer<'a>, out: &mut TranslationUnit<'a>, ) -> Result<(), Error<'a>>

pub fn parse<'a>( &mut self, source: &'a str, ) -> Result<TranslationUnit<'a>, Error<'a>>

const fn increase_brace_nesting( brace_nesting_level: u8, brace_span: Span, ) -> Result<u8, Error<'static>>