diff options
Diffstat (limited to 'lib/coderay/scanners/lua.rb')
| -rw-r--r-- | lib/coderay/scanners/lua.rb | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/lib/coderay/scanners/lua.rb b/lib/coderay/scanners/lua.rb index 25bebbe..185c133 100644 --- a/lib/coderay/scanners/lua.rb +++ b/lib/coderay/scanners/lua.rb @@ -59,13 +59,15 @@ module Scanners # CodeRay entry hook. Starts parsing. def scan_tokens(encoder, options) state = options[:state] || @state + brace_depth = @brace_depth + num_equals = nil until eos? case state when :initial if match = scan(/\-\-\[\=*\[/) #--[[ long (possibly multiline) comment ]] - @num_equals = match.count("=") # Number must match for comment end + num_equals = match.count("=") # Number must match for comment end encoder.begin_group(:comment) encoder.text_token(match, :delimiter) state = :long_comment @@ -74,7 +76,7 @@ module Scanners encoder.text_token(match, :comment) elsif match = scan(/\[=*\[/) # [[ long (possibly multiline) string ]] - @num_equals = match.count("=") # Number must match for comment end + num_equals = match.count("=") # Number must match for comment end encoder.begin_group(:string) encoder.text_token(match, :delimiter) state = :long_string @@ -101,19 +103,19 @@ module Scanners elsif match = scan(/\{/) # Opening table brace { encoder.begin_group(:map) - encoder.text_token(match, @brace_depth >= 1 ? :inline_delimiter : :delimiter) - @brace_depth += 1 + encoder.text_token(match, brace_depth >= 1 ? :inline_delimiter : :delimiter) + brace_depth += 1 state = :map elsif match = scan(/\}/) # Closing table brace } - if @brace_depth == 1 - @brace_depth = 0 + if brace_depth == 1 + brace_depth = 0 encoder.text_token(match, :delimiter) encoder.end_group(:map) - elsif @brace_depth == 0 # Mismatched brace + elsif brace_depth == 0 # Mismatched brace encoder.text_token(match, :error) else - @brace_depth -= 1 + brace_depth -= 1 encoder.text_token(match, :inline_delimiter) encoder.end_group(:map) state = :map @@ -122,7 +124,7 @@ module Scanners elsif match = scan(/["']/) # String delimiters " and ' encoder.begin_group(:string) encoder.text_token(match, :delimiter) - @start_delim = match + start_delim = match state = :string # ↓Prefix hex number ←|→ decimal number @@ -146,7 +148,7 @@ module Scanners # It may be that we’re scanning a full-blown subexpression of a table # (tables can contain full expressions in parts). # If this is the case, return to :map scanning state. - state = :map if state == :initial && @brace_depth >= 1 + state = :map if state == :initial && brace_depth >= 1 when :function_expected if match = scan(/\(.*?\)/m) # x = function() # "Anonymous" function without explicit name @@ -198,10 +200,10 @@ module Scanners end when :long_comment - if match = scan(/.*?(?=\]={#@num_equals}\])/m) + if match = scan(/.*?(?=\]={#{num_equals}}\])/m) encoder.text_token(match, :content) - delim = scan(/\]={#@num_equals}\]/) + delim = scan(/\]={#{num_equals}}\]/) encoder.text_token(delim, :delimiter) else # No terminator found till EOF encoder.text_token(rest, :error) @@ -211,10 +213,10 @@ module Scanners state = :initial when :long_string - if match = scan(/.*?(?=\]={#@num_equals}\])/m) # Long strings do not interpret any escape sequences + if match = scan(/.*?(?=\]={#{num_equals}}\])/m) # Long strings do not interpret any escape sequences encoder.text_token(match, :content) - delim = scan(/\]={#@num_equals}\]/) + delim = scan(/\]={#{num_equals}}\]/) encoder.text_token(delim, :delimiter) else # No terminator found till EOF encoder.text_token(rest, :error) @@ -224,11 +226,11 @@ module Scanners state = :initial when :string - if match = scan(/[^\\#@start_delim\n]+/) # Everything except \ and the start delimiter character is string content (newlines are only allowed if preceeded by \ or \z) + if match = scan(/[^\\#{start_delim}\n]+/) # Everything except \ and the start delimiter character is string content (newlines are only allowed if preceeded by \ or \z) encoder.text_token(match, :content) elsif match = scan(/\\(?:['"abfnrtv\\]|z\s*|x\h\h|\d{1,3}|\n)/m) encoder.text_token(match, :char) - elsif match = scan(Regexp.compile(@start_delim)) + elsif match = scan(Regexp.compile(start_delim)) encoder.text_token(match, :delimiter) encoder.end_group(:string) state = :initial |