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added comments to verbose regex in generate_model_import_ctes #93

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Dec 5, 2022
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added comments to verbose regex in generate_model_import_ctes #93

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243 changes: 236 additions & 7 deletions macros/generate_model_import_ctes.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -57,13 +57,242 @@
{%- set does_raw_sql_contain_cte = re.search(with_regex, model_raw_sql) -%}

{%- set from_regexes = {
'from_ref':'(?i)(from|join)\s+({{\s*ref\s*\(\s*[\'\"]?)([^)\'\"]+)([\'\"]?\s*)(\)\s*}})',
'from_source':'(?i)(from|join)\s+({{\s*source\s*\(\s*[\'\"]?)([^)\'\"]+)([\'\"]?\s*)(,)(\s*[\'\"]?)([^)\'\"]+)([\'\"]?\s*)(\)\s*}})',
'from_var_1':'(?i)(from|join)\s+({{\s*var\s*\(\s*[\'\"]?)([^)\'\"]+)([\'\"]?\s*)(\)\s*}})',
'from_var_2':'(?i)(from|join)\s+({{\s*var\s*\(\s*[\'\"]?)([^)\'\"]+)([\'\"]?\s*)(,)(\s*[\'\"]?)([^)\'\"]+)([\'\"]?\s*)(\)\s*}})',
'from_table_1':'(?i)(from|join)\s+([\[`\"\']?)(\w+)([\]`\"\']?)(\.)([\[`\"\']?)(\w+)([\]`\"\']?)(?=\s|$)',
'from_table_2':'(?i)(from|join)\s+([\[`\"\']?)(\w+)([\]`\"\']?)(\.)([\[`\"\']?)(\w+)([\]`\"\']?)(\.)([\[`\"\']?)(\w+)([\]`\"\']?)(?=\s|$)',
'from_table_3':'(?i)(from|join)\s+([\[`\"\'])([\w ]+)([\]`\"\'])(?=\s|$)',
'from_ref':
'(?ix)

# first matching group
# from or join followed by at least 1 whitespace character
(from|join)\s+

# second matching group
# opening {{, 0 or more whitespace character(s), ref, 0 or more whitespace character(s), an opening parenthesis, 0 or more whitespace character(s), 1 or 0 quotation mark
({{\s*ref\s*\(\s*[\'\"]?)

# third matching group
# at least 1 of anything except a parenthesis or quotation mark
([^)\'\"]+)

# fourth matching group
# 1 or 0 quotation mark, 0 or more whitespace character(s)
([\'\"]?\s*)

# fifth matching group
# a closing parenthesis, 0 or more whitespace character(s), closing }}
(\)\s*}})

',
'from_source':
'(?ix)

# first matching group
# from or join followed by at least 1 whitespace character
(from|join)\s+

# second matching group
# opening {{, 0 or more whitespace character(s), source, 0 or more whitespace character(s), an opening parenthesis, 0 or more whitespace character(s), 1 or 0 quotation mark
({{\s*source\s*\(\s*[\'\"]?)

# third matching group
# at least 1 of anything except a parenthesis or quotation mark
([^)\'\"]+)

# fourth matching group
# 1 or 0 quotation mark, 0 or more whitespace character(s)
([\'\"]?\s*)

# fifth matching group
# a comma
(,)

# sixth matching group
# 0 or more whitespace character(s), 1 or 0 quotation mark
(\s*[\'\"]?)

# seventh matching group
# at least 1 of anything except a parenthesis or quotation mark
([^)\'\"]+)

# eighth matching group
# 1 or 0 quotation mark, 0 or more whitespace character(s)
([\'\"]?\s*)

# ninth matching group
# a closing parenthesis, 0 or more whitespace character(s), closing }}
(\)\s*}})

',
'from_var_1':
'(?ix)

# first matching group
# from or join followed by at least 1 whitespace character
(from|join)\s+

# second matching group
# opening {{, 0 or more whitespace character(s), var, 0 or more whitespace character(s), an opening parenthesis, 0 or more whitespace character(s), 1 or 0 quotation mark
({{\s*var\s*\(\s*[\'\"]?)

# third matching group
# at least 1 of anything except a parenthesis or quotation mark
([^)\'\"]+)

# fourth matching group
# 1 or 0 quotation mark, 0 or more whitespace character(s)
([\'\"]?\s*)

# fifth matching group
# a closing parenthesis, 0 or more whitespace character(s), closing }}
(\)\s*}})

',
'from_var_2':
'(?ix)

# first matching group
# from or join followed by at least 1 whitespace character
(from|join)\s+

# second matching group
# opening {{, 0 or more whitespace character(s), var, 0 or more whitespace character(s), an opening parenthesis, 0 or more whitespace character(s), 1 or 0 quotation mark
({{\s*var\s*\(\s*[\'\"]?)

# third matching group
# at least 1 of anything except a parenthesis or quotation mark
([^)\'\"]+)

# fourth matching group
# 1 or 0 quotation mark, 0 or more whitespace character(s)
([\'\"]?\s*)

# fifth matching group
# a comma
(,)

# sixth matching group
# 0 or more whitespace character(s), 1 or 0 quotation mark
(\s*[\'\"]?)

# seventh matching group
# at least 1 of anything except a parenthesis or quotation mark
([^)\'\"]+)

# eighth matching group
# 1 or 0 quotation mark, 0 or more whitespace character(s)
([\'\"]?\s*)

# ninth matching group
# a closing parenthesis, 0 or more whitespace character(s), closing }}
(\)\s*}})

',
'from_table_1':
'(?ix)

# first matching group
# from or join followed by at least 1 whitespace character
(from|join)\s+

# second matching group
# 1 or 0 of (opening bracket, backtick, or quotation mark)
([\[`\"\']?)

# third matching group
# at least 1 word character
(\w+)

# fouth matching group
# 1 or 0 of (closing bracket, backtick, or quotation mark)
([\]`\"\']?)

# fifth matching group
# a period
(\.)

# sixth matching group
# 1 or 0 of (opening bracket, backtick, or quotation mark)
([\[`\"\']?)

# seventh matching group
# at least 1 word character
(\w+)

# eighth matching group
# 1 or 0 of (closing bracket, backtick, or quotation mark) folowed by a whitespace character or end of string
([\]`\"\']?)(?=\s|$)

',
'from_table_2':
'(?ix)

# first matching group
# from or join followed by at least 1 whitespace character
(from|join)\s+

# second matching group
# 1 or 0 of (opening bracket, backtick, or quotation mark)
([\[`\"\']?)

# third matching group
# at least 1 word character
(\w+)

# fouth matching group
# 1 or 0 of (closing bracket, backtick, or quotation mark)
([\]`\"\']?)

# fifth matching group
# a period
(\.)

# sixth matching group
# 1 or 0 of (opening bracket, backtick, or quotation mark)
([\[`\"\']?)

# seventh matching group
# at least 1 word character
(\w+)

# eighth matching group
# 1 or 0 of (closing bracket, backtick, or quotation mark)
([\]`\"\']?)

# ninth matching group
# a period
(\.)

# tenth matching group
# 1 or 0 of (closing bracket, backtick, or quotation mark)
([\[`\"\']?)

# eleventh matching group
# at least 1 word character
(\w+)

# twelfth matching group
# 1 or 0 of (closing bracket, backtick, or quotation mark) folowed by a whitespace character or end of string
([\]`\"\']?)(?=\s|$)

',
'from_table_3':
'(?ix)

# first matching group
# from or join followed by at least 1 whitespace character
(from|join)\s+

# second matching group
# 1 or 0 of (opening bracket, backtick, or quotation mark)
([\[`\"\'])

# third matching group
# at least 1 word character or space
([\w ]+)

# fourth matching group
# 1 or 0 of (closing bracket, backtick, or quotation mark) folowed by a whitespace character or end of string
([\]`\"\'])(?=\s|$)

',
'config_block':'(?i)(?s)^.*{{\s*config\s*\([^)]+\)\s*}}'
} -%}

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