panda3d.core.ConfigVariableCore¶

class ConfigVariableCore¶

Bases: ConfigFlags

The internal definition of a ConfigVariable. This object is shared between all instances of a ConfigVariable that use the same variable name.

You cannot create a ConfigVariableCore instance directly; instead, use the make() method, which may return a shared instance. Once created, these objects are never destructed.

Inheritance diagram

getName() → str¶: Returns the name of the variable.

isUsed() → bool¶: Returns true if the variable has been referenced by a ConfigVariable somewhere in code, false otherwise.

getValueType() → ValueType¶

Returns the stated type of this variable. If the variable has not yet been defined, this will be VT_undefined.

Return type: ValueType

getDescription() → str¶: Returns the brief description of this variable, if it has been defined.

getFlags() → int¶: Returns the flags value as set by setFlags(). This includes the trust level and some other settings. See the individual methods isClosed(), getTrustLevel(), etc. to pull out the semantic meaning of these flags individually.

isClosed() → bool¶

Returns true if the variable is not trusted by any prc file (and hence cannot be modified from its compiled-in default value), or false for the normal case, in which the variable can be modified by any prc file at or above its trust level (see getTrustLevel()).

This value only has effect in a release build (specifically, when PRC_RESPECT_TRUST_LEVEL is defined true in Config.pp).

getTrustLevel() → int¶

Returns the minimum trust_level a prc file must demonstrate in order to redefine the value for this variable. Arguably, this should be called the “mistrust level”, since the larger the value, the more suspicious we are of prc files. This value is not used if isClosed() returns true, which indicates no file may be trusted.

This value only has effect in a release build (specifically, when PRC_RESPECT_TRUST_LEVEL is defined true in Config.pp).

isDynamic() → bool¶: Returns true if the variable was indicated as “dynamic” by its constructor, indicating that its name was dynamically generated, possibly from a large pool, and it should not be listed along with the other variables.

getDefaultValue() → ConfigDeclaration¶

Returns the default variable specified for this variable. If the variable has not yet been defined, this will return NULL.

Return type: ConfigDeclaration

setValueType(value_type: ValueType) → None¶: Specifies the type of this variable. See getValueType(). It is not an error to call this multiple times, but if the value changes once getDeclaration() has been called, a warning is printed.

setFlags(flags: int) → None¶: Specifies the trust level of this variable. See getFlags(). It is not an error to call this multiple times, but if the value changes once getDeclaration() has been called, a warning is printed.

setDescription(description: str) → None¶: Specifies the one-line description of this variable. See getDescription(). It is not an error to call this multiple times, but if the value changes once getDeclaration() has been called, a warning is printed.

setDefaultValue(default_value: str) → None¶: Specifies the default value for this variable if it is not defined in any prc file.

setUsed() → None¶: Marks that the variable has been “declared” by a ConfigVariable.

makeLocalValue() → ConfigDeclaration¶

Creates a new local value for this variable, if there is not already one specified. This will shadow any values defined in the various .prc files.

If there is already a local value defined for this variable, simply returns that one.

Use clearLocalValue() to remove the local value definition.

Return type: ConfigDeclaration

clearLocalValue() → bool¶

Removes the local value defined for this variable, and allows its value to be once again retrieved from the .prc files.

Returns true if the value was successfully removed, false if it did not exist in the first place.

hasLocalValue() → bool¶: Returns true if this variable’s value has been shadowed by a local assignment (as created via makeLocalValue()), or false otherwise.

hasValue() → bool¶: Returns true if this variable has an explicit value, either from a prc file or locally set, or false if variable has its default value.

getNumDeclarations() → size_t¶

Returns the number of declarations that contribute to this variable’s value. If the variable has been defined, this will always be at least 1 (for the default value, at least).

Return type: size_t

getDeclaration(n: size_t) → ConfigDeclaration¶

Returns the nth declarations that contributes to this variable’s value. The declarations are arranged in order such that earlier declarations shadow later declarations; thus, get_declaration(0) is always defined and always returns the current value of the variable.

Return type: ConfigDeclaration

getNumReferences() → size_t¶

Returns the number of prc files that reference this variable. This is not exactly the same as the number of declarations; see getReference().

Return type: size_t

getReference(n: size_t) → ConfigDeclaration¶

Returns the nth declaration in a prc file that references this variable. This is similar, but not identical to, getDeclaration(). The difference is that this will list only true references in a prc file, and will not list default values or locally-assigned values; it also will list even the untrusted files.

Return type: ConfigDeclaration

getNumTrustedReferences() → size_t¶

Returns the number of trusted prc files that reference this variable. See also getNumReferences().

Return type: size_t

getTrustedReference(n: size_t) → ConfigDeclaration¶

Returns the nth declaration in a trusted prc file that references this variable. This is similar, but not identical to, getDeclaration(). The difference is that this will list only true references in a prc file, and will not list default values or locally-assigned values.

This is also similar to getReference(), except that it only lists the trusted declarations, omitting the untrusted ones.

Return type: ConfigDeclaration

getNumUniqueReferences() → size_t¶

Returns the number of trusted, unique (by string value) values there exist for this variable.

Return type: size_t

getUniqueReference(n: size_t) → ConfigDeclaration¶

Returns the nth trusted, unique value for this variable. This is similar to getTrustedReference(), except that duplicate values are removed.

Return type: ConfigDeclaration

output(out: ostream) → None¶

write(out: ostream) → None¶

getDeclarations() → list¶

getReferences() → list¶

getTrustedReferences() → list¶

getUniqueReferences() → list¶

property declarations¶

Returns the nth declarations that contributes to this variable’s value. The declarations are arranged in order such that earlier declarations shadow later declarations; thus, get_declaration(0) is always defined and always returns the current value of the variable.

Return type: Sequence[ConfigDeclaration]

property name¶

Returns the name of the variable.

Return type: string

property used¶

Returns true if the variable has been referenced by a ConfigVariable somewhere in code, false otherwise.

Return type: bool

property closed¶

Returns true if the variable is not trusted by any prc file (and hence cannot be modified from its compiled-in default value), or false for the normal case, in which the variable can be modified by any prc file at or above its trust level (see getTrustLevel()).

This value only has effect in a release build (specifically, when PRC_RESPECT_TRUST_LEVEL is defined true in Config.pp).

Return type: bool

property trust_level¶

Returns the minimum trust_level a prc file must demonstrate in order to redefine the value for this variable. Arguably, this should be called the “mistrust level”, since the larger the value, the more suspicious we are of prc files. This value is not used if isClosed() returns true, which indicates no file may be trusted.

This value only has effect in a release build (specifically, when PRC_RESPECT_TRUST_LEVEL is defined true in Config.pp).

Return type: int

property dynamic¶

Returns true if the variable was indicated as “dynamic” by its constructor, indicating that its name was dynamically generated, possibly from a large pool, and it should not be listed along with the other variables.

Return type: bool

property value_type¶

Getter: Returns the stated type of this variable. If the variable has not yet been defined, this will be VT_undefined.
Setter: Specifies the type of this variable. See getValueType(). It is not an error to call this multiple times, but if the value changes once getDeclaration() has been called, a warning is printed.

Return type: ValueType

property description¶

Getter: Returns the brief description of this variable, if it has been defined.
Setter: Specifies the one-line description of this variable. See getDescription(). It is not an error to call this multiple times, but if the value changes once getDeclaration() has been called, a warning is printed.

Return type: string

property default_value¶

Getter: Returns the default variable specified for this variable. If the variable has not yet been defined, this will return NULL.
Setter: Specifies the default value for this variable if it is not defined in any prc file.

Return type: ConfigDeclaration

property references¶

Returns the nth declaration in a prc file that references this variable. This is similar, but not identical to, getDeclaration(). The difference is that this will list only true references in a prc file, and will not list default values or locally-assigned values; it also will list even the untrusted files.

Return type: Sequence[ConfigDeclaration]

property trusted_references¶

Returns the nth declaration in a trusted prc file that references this variable. This is similar, but not identical to, getDeclaration(). The difference is that this will list only true references in a prc file, and will not list default values or locally-assigned values.

This is also similar to getReference(), except that it only lists the trusted declarations, omitting the untrusted ones.

Return type: Sequence[ConfigDeclaration]

property unique_references¶

Returns the nth trusted, unique value for this variable. This is similar to getTrustedReference(), except that duplicate values are removed.

Return type: Sequence[ConfigDeclaration]