Erlang -- erl_comment_scan

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  - parse/1
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  - quick_parse/3
  - quick_parse_file/1
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  - quick_parse_form/2
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  - tokens_to_string/1
- erl_comment_scan
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  - file/1
  - join_lines/1
  - scan_lines/1
  - string/1
- erl_prettypr
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  - best/1
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  - format/1
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  - get_ctxt_hook/1
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- erl_syntax
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  - abstract/1
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  - application/2
  - application/3
  - application_arguments/1
  - application_operator/1
  - arity_qualifier/2
  - arity_qualifier_argument/1
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  - atom/1
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  - atom_name/1
  - atom_value/1
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  - attribute/2
  - attribute_arguments/1
  - attribute_name/1
  - binary/1
  - binary_comp/2
  - binary_comp_body/1
  - binary_comp_template/1
  - binary_field/1
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  - binary_field_body/1
  - binary_field_size/1
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  - binary_fields/1
  - binary_generator/2
  - binary_generator_body/1
  - binary_generator_pattern/1
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  - char/1
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  - comment/1
  - comment/2
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  - cond_expr/1
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  - conjunction/1
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  - cons/2
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  - data/1
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  - generator/2
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  - get_ann/1
  - get_attrs/1
  - get_pos/1
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  - get_precomments/1
  - has_comments/1
  - if_expr/1
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  - implicit_fun/1
  - implicit_fun/2
  - implicit_fun/3
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  - infix_expr/3
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  - integer/1
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  - is_leaf/1
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  - join_comments/2
  - list/1
  - list/2
  - list_comp/2
  - list_comp_body/1
  - list_comp_template/1
  - list_elements/1
  - list_head/1
  - list_length/1
  - list_prefix/1
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  - macro/1
  - macro/2
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  - make_tree/2
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  - match_expr_body/1
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  - meta/1
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  - module_qualifier_argument/1
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  - nil/0
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  - parentheses/1
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  - receive_expr/1
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  - record_access/2
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  - record_index_expr/2
  - record_index_expr_field/1
  - record_index_expr_type/1
  - remove_comments/1
  - revert/1
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  - rule/2
  - rule_arity/1
  - rule_clauses/1
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  - set_ann/2
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  - set_pos/2
  - set_postcomments/2
  - set_precomments/2
  - size_qualifier/2
  - size_qualifier_argument/1
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  - string_value/1
  - subtrees/1
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  - underscore/0
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  - variable/1
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- erl_syntax_lib
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  - fold/3
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  - foldl_listlist/3
  - function_name_expansions/1
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  - limit/2
  - limit/3
  - map/2
  - map_subtrees/2
  - mapfold/3
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  - mapfoldl_listlist/3
  - new_variable_name/1
  - new_variable_name/2
  - new_variable_names/2
  - new_variable_names/3
  - strip_comments/1
  - to_comment/1
  - to_comment/2
  - to_comment/3
  - variables/1
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  - dir/0
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  - module/1
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  - merge/2
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  - format/1
  - format/2
  - format/3
  - nest/2
  - null_text/1
  - par/1
  - par/2
  - sep/1
  - text/1
  - text_par/1
  - text_par/2

# erl_comment_scan

### MODULE

erl_comment_scan

### MODULE SUMMARY

Functions for reading comment lines from Erlang source code.

### DESCRIPTION

Functions for reading comment lines from Erlang source code.

### DATA TYPES

comment() = {integer(), integer(), integer(), [string()]}

### EXPORTS

file(FileName::filename() (see module file)) -> [Comment]

Types:

Comment = {Line, Column, Indentation, Text}
Line = integer()
Column = integer()
Indentation = integer()
Text = [string()]

Extracts comments from an Erlang source code file. Returns a list of entries representing multi-line comments, listed in order of increasing line-numbers. For each entry, Text is a list of strings representing the consecutive comment lines in top-down order; the strings contain all characters following (but not including) the first comment-introducing % character on the line, up to (but not including) the line-terminating newline.

Furthermore, Line is the line number and Column the left column of the comment (i.e., the column of the comment-introducing % character). Indent is the indentation (or padding), measured in character positions between the last non-whitespace character before the comment (or the left margin), and the left column of the comment. Line and Column are always positive integers, and Indentation is a nonnegative integer.

Evaluation exits with reason {read, Reason} if a read error occurred, where Reason is an atom corresponding to a Posix error code; see the module file(3) for details.

join_lines(Lines::[CommentLine]) -> [Comment]

Types:

CommentLine = {Line, Column, Indent, string()}
Line = integer()
Column = integer()
Indent = integer()
Comment = {Line, Column, Indent, Text}
Text = [string()]

Joins individual comment lines into multi-line comments. The input is a list of entries representing individual comment lines, in order of decreasing line-numbers; see scan_lines/1 for details. The result is a list of entries representing multi-line comments, still listed in order of decreasing line-numbers, but where for each entry, Text is a list of consecutive comment lines in order of increasing line-numbers (i.e., top-down).

See also: scan_lines/1.

scan_lines(Text::string()) -> [CommentLine]

Types:

CommentLine = {Line, Column, Indent, Text}
Line = integer()
Column = integer()
Indent = integer()
Text = string()

Extracts individual comment lines from a source code string. Returns a list of comment lines found in the text, listed in order of decreasing line-numbers, i.e., the last comment line in the input is first in the resulting list. Text is a single string, containing all characters following (but not including) the first comment-introducing % character on the line, up to (but not including) the line-terminating newline. For details on Line, Column and Indent, see file/1.

string(Text::string()) -> [Comment]

Types:

Comment = {Line, Column, Indentation, Text}
Line = integer()
Column = integer()
Indentation = integer()
Text = [string()]

Extracts comments from a string containing Erlang source code. Except for reading directly from a string, the behaviour is the same as for file/1.

See also: file/1.

Richard Carlsson richardc@it.uu.se