class Savi::AST::Relate

• Savi::AST::Relate
• Savi::AST::Node
• Reference
• Object

Overview

A Relate node has a left Term and right Term, related by an infix Operator. One common example is assignment (op.value == "="):

example = "string" ^~~~~~~ (lhs) ^ (op) ^~~~~~ (rhs) ^~~~~~~~~~~~~~~~~~ (relate)

Another common example is method calls prior to Sugar pass expansion, which have (op.value == "."), and whose #rhs may either be a Qualify (with args) or an Identifier (no args).

Settings.read(content, true) ^~~~~~~~ (lhs) ^ (op) ^~~~~~~~~~~~~~~~~~~ (rhs) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ (relate)

Other examples include binary operators prior to Sugar pass expansion (usually these get converted to method calls in the Sugar pass):

number_1 + number_2 + number_3 ^~~~~~~~ (inner relate lhs) ^ (inner relate op) ^~~~~~~~ (inner relate rhs) ^~~~~~~~~~~~~~~~~~~ (outer relate lhs -> inner relate) ^ (outer relate op) ^~~~~~~~ (outer relate rhs) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (outer relate)

Operator precedence is settled at the parser/builder level, so associativity is decided when first building the AST.

Defined in:

savi/ast.cr

Constructors

• .new(lhs : Term, op : Operator, rhs : Term)

Instance Method Summary

• #children_accept(ctx : Compiler::Context, visitor : Visitor)
• #children_accept(ctx : Compiler::Context, visitor : CopyOnMutateVisitor)
• #is_assign : Bool
• #is_assign=(is_assign : Bool)
• #lhs : Savi::AST::Node
• #lhs=(lhs : Savi::AST::Node)
• #name
• #op : Savi::AST::Operator
• #op=(op : Savi::AST::Operator)
• #rhs : Savi::AST::Node
• #rhs=(rhs : Savi::AST::Node)
• #span_pos(source)
• #to_a : Array(A)
• #with_assign_flag

Constructor Detail

Instance Method Detail