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[Sass] [SCSS] Record the line numbers of nodes.

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This commit is contained in:
Nathan Weizenbaum 2009-12-21 20:41:27 -08:00
parent b6511d3ed1
commit 11bd2274b7
1 changed files with 21 additions and 10 deletions
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31
lib/sass/scss/parser.rb
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@ -8,6 +8,7 @@ module Sass
class Parser
def initialize(str)
@scanner = StringScanner.new(str)
@line = 1
end
def parse
@ -21,7 +22,7 @@ module Sass
include Sass::SCSS::RX
def stylesheet
block_contents(Sass::Tree::RootNode.new(@scanner.string)) {s}
block_contents(node(Sass::Tree::RootNode.new(@scanner.string))) {s}
end
def s
@ -48,7 +49,7 @@ module Sass
# but some (e.g. @page) take selector-like arguments
expr || selector
end
node = Sass::Tree::DirectiveNode.new("#{name} #{val.strip}")
node = node(Sass::Tree::DirectiveNode.new("#{name} #{val.strip}"))
@expected = '"{" or ";"'
if raw '{'
@ -61,13 +62,13 @@ module Sass
end
def mixin
node = Sass::Tree::MixinDefNode.new(tok!(IDENT), [])
node = node(Sass::Tree::MixinDefNode.new(tok!(IDENT), []))
ss
block(node)
end
def include
node = Sass::Tree::MixinNode.new(tok!(IDENT), [])
node = node(Sass::Tree::MixinNode.new(tok!(IDENT), []))
ss
node
end
@ -100,7 +101,7 @@ module Sass
end
end
block(Sass::Tree::RuleNode.new(rules.strip))
block(node(Sass::Tree::RuleNode.new(rules.strip)))
end
def block(node)
@ -139,12 +140,14 @@ module Sass
# but I'm not sure the gains would be worth the added complexity.
def declaration_or_ruleset
pos = @scanner.pos
line = @line
begin
decl = declaration
rescue Sass::SyntaxError
end
return decl if decl && tok?(/[;}]/)
@line = line
@scanner.pos = pos
return ruleset
end
@ -264,7 +267,7 @@ module Sass
expr! :expr
prio
end
Sass::Tree::PropNode.new(name, value.strip, :new)
node(Sass::Tree::PropNode.new(name, value.strip, :new))
end
def prio
@ -316,6 +319,11 @@ module Sass
@str = nil
end
def node(node)
node.line = @line
node
end
EXPR_NAMES = {
:medium => "medium (e.g. print, screen)",
:pseudo_expr => "expression (e.g. fr, 2n+1)",
@ -347,7 +355,6 @@ module Sass
def expected(name)
pos = @scanner.pos
line = @scanner.string[0...pos].count("\n") + 1
after = @scanner.string[[pos - 15, 0].max...pos].gsub(/.*\n/m, '')
after = "..." + after if pos >= 15
@ -358,13 +365,17 @@ module Sass
was += "..." if @scanner.rest.size >= 15
raise Sass::SyntaxError.new(
"Invalid CSS after #{after.inspect}: expected #{expected}, was #{was.inspect}",
:line => line)
:line => @line)
end
def tok(rx)
res = @scanner.scan(rx)
@expected = nil if res
@str << res if res && @str && rx != COMMENT
if res
@line += res.count("\n")
@expected = nil
@str << res if @str && rx != COMMENT
end
res
end