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cmake: yaml: refactor yaml_set() list operations

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This introductory commit refactors the `yaml_set` function separating
the bodies of list operations into internal functions while preserving
their original behavior.

The conditions that cause the value to be interpreted as a list are also
verified only once, avoiding multiple checks.

Signed-off-by: Luca Burelli <l.burelli@arduino.cc>
This commit is contained in:
Luca Burelli 2024-10-17 10:47:40 +02:00 • committed by Benjamin Cabé
commit cf5607fb01
1 changed files with 41 additions and 14 deletions
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55
cmake/modules/yaml.cmake
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@ -72,6 +72,29 @@ function(internal_yaml_context_free)
endif()
endfunction()
# Internal helper function to provide the correct initializer for a list in the
# JSON content.
function(internal_yaml_list_initializer var)
set(${var} "[]" PARENT_SCOPE)
endfunction()
# Internal helper function to append items to a list in the JSON content.
# Unassigned arguments are the values to be appended.
function(internal_yaml_list_append var key)
set(json_content "${${var}}")
string(JSON subjson GET "${json_content}" ${key})
string(JSON index LENGTH "${subjson}")
list(LENGTH ARGN length)
math(EXPR stop "${index} + ${length} - 1")
if(NOT length EQUAL 0)
foreach(i RANGE ${index} ${stop})
list(POP_FRONT ARGN value)
string(JSON json_content SET "${json_content}" ${key} ${i} "\"${value}\"")
endforeach()
endif()
set(${var} "${json_content}" PARENT_SCOPE)
endfunction()
# Usage
# yaml_context(EXISTS NAME <name> <result>)
#
@ -265,6 +288,18 @@ function(yaml_set)
zephyr_get_scoped(json_content ${ARG_YAML_NAME} JSON)
if(DEFINED ARG_YAML_LIST
OR LIST IN_LIST ARG_YAML_KEYWORDS_MISSING_VALUES)
set(key_is_list TRUE)
endif()
if(ARG_YAML_APPEND AND NOT key_is_list)
message(FATAL_ERROR "${CMAKE_CURRENT_FUNCTION}(APPEND ...) can only be used with argument: LIST")
endif()
zephyr_get_scoped(json_content ${ARG_YAML_NAME} JSON)
zephyr_get_scoped(genex ${ARG_YAML_NAME} GENEX)
set(yaml_key_undefined ${ARG_YAML_KEY})
foreach(k ${yaml_key_undefined})
list(REMOVE_AT yaml_key_undefined 0)
@ -281,8 +316,8 @@ function(yaml_set)
list(REVERSE yaml_key_undefined)
if(NOT "${yaml_key_undefined}" STREQUAL "")
if(ARG_YAML_APPEND)
set(json_string "[]")
if(key_is_list)
internal_yaml_list_initializer(json_string)
else()
set(json_string "\"\"")
endif()
@ -295,21 +330,13 @@ function(yaml_set)
)
endif()
if(DEFINED ARG_YAML_LIST OR LIST IN_LIST ARG_YAML_KEYWORDS_MISSING_VALUES)
if(key_is_list)
if(NOT ARG_YAML_APPEND)
string(JSON json_content SET "${json_content}" ${ARG_YAML_KEY} "[]")
internal_yaml_list_initializer(json_string)
string(JSON json_content SET "${json_content}" ${ARG_YAML_KEY} "${json_string}")
endif()
string(JSON subjson GET "${json_content}" ${ARG_YAML_KEY})
string(JSON index LENGTH "${subjson}")
list(LENGTH ARG_YAML_LIST length)
math(EXPR stop "${index} + ${length} - 1")
if(NOT length EQUAL 0)
foreach(i RANGE ${index} ${stop})
list(POP_FRONT ARG_YAML_LIST value)
string(JSON json_content SET "${json_content}" ${ARG_YAML_KEY} ${i} "\"${value}\"")
endforeach()
endif()
internal_yaml_list_append(json_content "${ARG_YAML_KEY}" ${ARG_YAML_LIST})
else()
string(JSON json_content SET "${json_content}" ${ARG_YAML_KEY} "\"${ARG_YAML_VALUE}\"")
endif()