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require "spec"
require "ecr/lexer"
private def t(type : ECR::Lexer::Token::Type)
type
end
describe "ECR::Lexer" do
it "lexes without interpolation" do
lexer = ECR::Lexer.new("hello")
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("hello")
token.line_number.should eq(1)
token.column_number.should eq(1)
token = lexer.next_token
token.type.should eq(t :eof)
end
it "lexes with <% %>" do
lexer = ECR::Lexer.new("hello <% foo %> bar")
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("hello ")
token.column_number.should eq(1)
token.line_number.should eq(1)
token = lexer.next_token
token.type.should eq(t :control)
token.value.should eq(" foo ")
token.line_number.should eq(1)
token.column_number.should eq(9)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_false
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq(" bar")
token.line_number.should eq(1)
token.column_number.should eq(16)
token = lexer.next_token
token.type.should eq(t :eof)
end
it "lexes with <%- %>" do
lexer = ECR::Lexer.new("<%- foo %>")
token = lexer.next_token
token.type.should eq(t :control)
token.value.should eq(" foo ")
token.line_number.should eq(1)
token.column_number.should eq(4)
token.suppress_leading?.should be_true
token.suppress_trailing?.should be_false
end
it "lexes with <% -%>" do
lexer = ECR::Lexer.new("<% foo -%>")
token = lexer.next_token
token.type.should eq(t :control)
token.value.should eq(" foo ")
token.line_number.should eq(1)
token.column_number.should eq(3)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_true
end
it "lexes with -% inside string" do
lexer = ECR::Lexer.new("<% \"-%\" %>")
token = lexer.next_token
token.type.should eq(t :control)
token.value.should eq(" \"-%\" ")
end
it "lexes with <%= %>" do
lexer = ECR::Lexer.new("hello <%= foo %> bar")
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("hello ")
token.column_number.should eq(1)
token.line_number.should eq(1)
token = lexer.next_token
token.type.should eq(ECR::Lexer::Token::Type::Output)
token.value.should eq(" foo ")
token.line_number.should eq(1)
token.column_number.should eq(10)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_false
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq(" bar")
token.line_number.should eq(1)
token.column_number.should eq(17)
token = lexer.next_token
token.type.should eq(t :eof)
end
it "lexes with <%= -%>" do
lexer = ECR::Lexer.new("<%= foo -%>")
token = lexer.next_token
token.type.should eq(ECR::Lexer::Token::Type::Output)
token.value.should eq(" foo ")
token.line_number.should eq(1)
token.column_number.should eq(4)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_true
end
it "lexes with <%# %>" do
lexer = ECR::Lexer.new("hello <%# foo %> bar")
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("hello ")
token.column_number.should eq(1)
token.line_number.should eq(1)
token = lexer.next_token
token.type.should eq(t :control)
token.value.should eq("# foo ")
token.line_number.should eq(1)
token.column_number.should eq(9)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_false
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq(" bar")
token.line_number.should eq(1)
token.column_number.should eq(17)
token = lexer.next_token
token.type.should eq(t :eof)
end
it "lexes with <%# -%>" do
lexer = ECR::Lexer.new("<%# foo -%>")
token = lexer.next_token
token.type.should eq(t :control)
token.value.should eq("# foo ")
token.line_number.should eq(1)
token.column_number.should eq(3)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_true
end
it "lexes with <%% %>" do
lexer = ECR::Lexer.new("hello <%% foo %> bar")
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("hello ")
token.column_number.should eq(1)
token.line_number.should eq(1)
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("<% foo %>")
token.line_number.should eq(1)
token.column_number.should eq(10)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_false
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq(" bar")
token.line_number.should eq(1)
token.column_number.should eq(17)
token = lexer.next_token
token.type.should eq(t :eof)
end
it "lexes with <%%= %>" do
lexer = ECR::Lexer.new("hello <%%= foo %> bar")
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("hello ")
token.column_number.should eq(1)
token.line_number.should eq(1)
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("<%= foo %>")
token.line_number.should eq(1)
token.column_number.should eq(10)
token.suppress_leading?.should be_false
token.suppress_trailing?.should be_false
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq(" bar")
token.line_number.should eq(1)
token.column_number.should eq(18)
token = lexer.next_token
token.type.should eq(t :eof)
end
it "lexes with <% %> and correct location info" do
lexer = ECR::Lexer.new("hi\nthere <% foo\nbar %> baz")
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq("hi\nthere ")
token.line_number.should eq(1)
token.column_number.should eq(1)
token = lexer.next_token
token.type.should eq(t :control)
token.value.should eq(" foo\nbar ")
token.line_number.should eq(2)
token.column_number.should eq(9)
token = lexer.next_token
token.type.should eq(t :string)
token.value.should eq(" baz")
token.line_number.should eq(3)
token.column_number.should eq(7)
token = lexer.next_token
token.type.should eq(t :eof)
end
end
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