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74 lines
1.3 KiB
74 lines
1.3 KiB
require_relative "../test_helper"
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require "lox/ast_printer"
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require "lox/parser"
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require "lox/resolver"
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require "lox/scanner"
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class TestResolver < Lox::Test
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def setup
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@ast_printer = Lox::AstPrinter.new
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@scanner = Lox::Scanner.new
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@interpreter = Interpreter.new
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@resolver = Lox::Resolver.new(@interpreter)
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end
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def test_resolver
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assert_resolved [
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["(var j)", 0],
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["(var j)", 2],
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["(var j)", 1],
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["(assign j (+ (var j) 1.0))", 1],
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["(var k)", 0],
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["(var k)", 2],
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["(var k)", 1],
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["(assign k (+ (var k) 1.0))", 1],
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], <<~SRC
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var i = 0;
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while (i < 3) {
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print i;
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i = i + 1;
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}
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for(var j=0; j<3; j=j+1) {
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print j;
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}
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{
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var k = 0;
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while (k < 3) {
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{
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print k;
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}
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k = k + 1;
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}
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}
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SRC
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end
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private
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def assert_resolved(expected, src)
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stmts = Lox::Parser.new(@scanner.scan(src)).parse!
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@resolver.resolve(*stmts);
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assert_equal expected, @interpreter.resolves.map {|expr, depth|
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[@ast_printer.print(expr), depth]
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}
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end
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class Interpreter
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attr_reader :resolves
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def initialize
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@resolves = []
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end
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def resolve(expr, depth)
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resolves << [expr, depth]
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end
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end
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end
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