Packages
credo
0.3.0-dev
1.7.19
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1.7.16
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1.7.2-rc.2
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1.7.0
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1.7.0-rc.1
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1.6.6
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1.1.0
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1.0.5
1.0.4
1.0.3
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1.0.0
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0.10.2
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0.6.1
0.6.0
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0.5.3
0.5.2
0.5.1
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0.4.10
0.4.10-dev
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0.4.7
0.4.6
0.4.5
0.4.4
0.4.3
0.4.2
0.4.1
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0.4.0-beta5
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0.4.0-beta2
0.4.0-beta1
0.3.13
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0.3.11
0.3.10
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0.3.0-dev
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0.1.0
0.0.1-dev
A static code analysis tool with a focus on code consistency and teaching.
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lib/credo/source_file.ex
defmodule Credo.SourceFile do
defstruct filename: nil,
source: nil,
lines: nil,
ast: nil,
valid?: nil,
issues: []
def parse(source, filename) do
%Credo.SourceFile{
filename: filename,
source: source,
lines: source |> Credo.Code.to_lines,
} |> with_ast
end
@doc """
Returns the line at the given +line_no+.
NOTE: +line_no+ is a 1-based index.
"""
def line_at(source_file, line_no) do
Enum.find_value(source_file.lines, fn {line_no2, line} ->
if line_no2 == line_no, do: line
end)
end
@doc """
Returns the column of the given +trigger+ inside the given line.
NOTE: Both +line_no+ and the returned index are 1-based.
"""
def column(source_file, line_no, trigger) do
line = line_at(source_file, line_no)
regexed = trigger |> to_string |> Regex.escape
case Regex.run(~r/\b#{regexed}\b/, line, return: :index) do
nil -> nil
result ->
{col, _} = result |> List.first
col + 1
end
end
defp with_ast(%Credo.SourceFile{} = source_file) do
case Credo.Code.ast(source_file) do
{:ok, ast} ->
%Credo.SourceFile{source_file | valid?: true, ast: ast}
{:error, errors} ->
%Credo.SourceFile{source_file | valid?: false, ast: [], issues: errors}
end
end
end