Enum GLSLExpr 

pub enum GLSLExpr {
    Literal(String),
    Var(String),
    BinOp {
        op: String,
        lhs: Box<GLSLExpr>,
        rhs: Box<GLSLExpr>,
    },
    UnaryOp {
        op: String,
        operand: Box<GLSLExpr>,
    },
    Call {
        func: String,
        args: Vec<GLSLExpr>,
    },
    Field {
        base: Box<GLSLExpr>,
        field: String,
    },
    Index {
        base: Box<GLSLExpr>,
        index: Box<GLSLExpr>,
    },
    Ternary {
        cond: Box<GLSLExpr>,
        then_expr: Box<GLSLExpr>,
        else_expr: Box<GLSLExpr>,
    },
}

A simple GLSL expression, sufficient for code-generation purposes.

Variants

Literal(String)

A literal number or boolean token.

Var(String)

A variable reference.

BinOp

A binary infix operation.

Fields

op: String

lhs: Box<GLSLExpr>

rhs: Box<GLSLExpr>

UnaryOp

A unary prefix operation.

Fields

op: String

operand: Box<GLSLExpr>

Call

A function/constructor call.

Fields

func: String

args: Vec<GLSLExpr>

Field

A field access (e.g. v.xy).

Fields

base: Box<GLSLExpr>

field: String

Index

An array index access.

Fields

base: Box<GLSLExpr>

index: Box<GLSLExpr>

Ternary

A ternary cond ? then : else expression.

Fields

cond: Box<GLSLExpr>

then_expr: Box<GLSLExpr>

else_expr: Box<GLSLExpr>

Implementations

impl GLSLExpr

pub fn emit(&self) -> String

Emit this expression as a GLSL source string.

pub fn binop(op: impl Into<String>, lhs: GLSLExpr, rhs: GLSLExpr) -> Self

Convenience: build a binary operation.

pub fn call(func: impl Into<String>, args: Vec<GLSLExpr>) -> Self

Convenience: build a function/constructor call.

pub fn var(name: impl Into<String>) -> Self

Convenience: build a variable expression.

pub fn float(v: f32) -> Self

Convenience: build a float literal.

Trait Implementations

impl Clone for GLSLExpr

fn clone(&self) -> GLSLExpr

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GLSLExpr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.