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//! Group code value types
//!
//! Determines how to interpret the value associated with a DXF group code.
use super::DxfCode;
/// Type of value associated with a group code
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
pub enum GroupCodeValueType {
/// No value or unknown
None,
/// String value
String,
/// Boolean value (0 or 1)
Bool,
/// 8-bit integer
Byte,
/// 16-bit signed integer
Int16,
/// 32-bit signed integer
Int32,
/// 64-bit signed integer
Int64,
/// Double-precision floating-point
Double,
/// 3D point (three doubles: X, Y, Z)
Point3D,
/// Binary data (hex string)
BinaryData,
/// Object handle (hex string)
Handle,
}
impl GroupCodeValueType {
/// Determine the value type from a DXF group code enum.
/// NOTE: This goes through the DxfCode enum, which may not cover all codes.
/// For binary reading where correctness is critical, use `from_raw_code` instead.
pub fn from_code(code: DxfCode) -> Self {
// Delegate to from_raw_code using the raw i32 representation.
// However, DxfCode::from_i32 can lose unmapped codes (they become Invalid = -9999).
// So we use the DxfCode's i32 representation which preserves the original value
// only if the DxfCode was constructed with a known variant.
Self::from_raw_code(code.to_i32())
}
/// Determine the value type from a raw integer group code.
/// This is the canonical mapping and should be preferred over `from_code`
/// when the original integer code is available (e.g., binary DXF reading).
pub fn from_raw_code(code_num: i32) -> Self {
match code_num {
// String values (0-9, 100-109, 300-309, 999)
0..=9 | 100..=109 | 300..=309 | 999 => GroupCodeValueType::String,
// Floating-point values (10-59, 110-149, 210-239, 460-469)
10..=59 | 110..=149 | 210..=239 | 460..=469 => GroupCodeValueType::Double,
// 16-bit integers (60-79, 170-179, 270-279, 370-389, 400-409)
60..=79 | 170..=179 | 270..=279 | 370..=389 | 400..=409 => GroupCodeValueType::Int16,
// 8-bit integers (280-289)
280..=289 => GroupCodeValueType::Byte,
// 32-bit integers (90-99, 420-429, 440-449)
90..=99 | 420..=429 | 440..=449 => GroupCodeValueType::Int32,
// 64-bit integers (160-169)
160..=169 => GroupCodeValueType::Int64,
// 32-bit integers (450-459) — DXF "Long" = 4-byte int
450..=459 => GroupCodeValueType::Int32,
// Boolean values (290-299)
290..=299 => GroupCodeValueType::Bool,
// Binary data (310-319)
310..=319 => GroupCodeValueType::BinaryData,
// Handle values (320-369, 390-399, 480-481)
320..=369 | 390..=399 | 480..=481 => GroupCodeValueType::Handle,
// String handles (410-419, 430-439, 470-479)
410..=419 | 430..=439 | 470..=479 => GroupCodeValueType::String,
// Extended data
1004 => GroupCodeValueType::BinaryData,
1005 => GroupCodeValueType::Handle,
1000..=1009 => GroupCodeValueType::String,
1040..=1042 => GroupCodeValueType::Double,
1010..=1059 => GroupCodeValueType::Double,
1060..=1070 => GroupCodeValueType::Int16,
1071 => GroupCodeValueType::Int32,
// Default to None for unknown codes
_ => GroupCodeValueType::None,
}
}
/// Check if this is a coordinate value (part of a 3D point)
pub fn is_coordinate(code: DxfCode) -> bool {
let code_num = code.to_i32();
// X coordinates: 10, 11, 12, 13, 14, 15, 16, 17, 18, 110, 111, 112, 1010, 1011, 1012, 1013
// Y coordinates: 20, 21, 22, 23, 24, 25, 26, 27, 28, 120, 121, 122, 1020, 1021, 1022, 1023
// Z coordinates: 30, 31, 32, 33, 34, 35, 36, 37, 38, 130, 131, 132, 1030, 1031, 1032, 1033
// Extrusion: 210, 220, 230
matches!(
code_num,
10..=18 | 20..=28 | 30..=38 |
110..=112 | 120..=122 | 130..=132 |
210 | 220 | 230 |
1010..=1013 | 1020..=1023 | 1030..=1033
)
}
/// Get the coordinate axis (0=X, 1=Y, 2=Z) for a coordinate code
pub fn coordinate_axis(code: DxfCode) -> Option<usize> {
let code_num = code.to_i32();
// X coordinates (10-18, 110-112, 210, 1010-1013)
if matches!(code_num, 10..=18 | 110..=112 | 210 | 1010..=1013) {
return Some(0);
}
// Y coordinates (20-28, 120-122, 220, 1020-1023)
if matches!(code_num, 20..=28 | 120..=122 | 220 | 1020..=1023) {
return Some(1);
}
// Z coordinates (30-38, 130-132, 230, 1030-1033)
if matches!(code_num, 30..=38 | 130..=132 | 230 | 1030..=1033) {
return Some(2);
}
None
}
/// Get the coordinate group index (0=primary, 1=secondary, etc.)
pub fn coordinate_group(code: DxfCode) -> Option<usize> {
let code_num = code.to_i32();
match code_num {
10 | 20 | 30 => Some(0), // Primary point
11 | 21 | 31 => Some(1), // Secondary point
12 | 22 | 32 => Some(2), // Tertiary point
13 | 23 | 33 => Some(3), // Quaternary point
14 | 24 | 34 => Some(4),
15 | 25 | 35 => Some(5),
16 | 26 | 36 => Some(6),
17 | 27 | 37 => Some(7),
18 | 28 | 38 => Some(8),
110 | 120 | 130 => Some(10), // UCS origin
111 | 121 | 131 => Some(11), // UCS X-axis
112 | 122 | 132 => Some(12), // UCS Y-axis
210 | 220 | 230 => Some(21), // Extrusion direction
1010 | 1020 | 1030 => Some(100), // XData point
1011 | 1021 | 1031 => Some(101), // XData world position
1012 | 1022 | 1032 => Some(102), // XData world displacement
1013 | 1023 | 1033 => Some(103), // XData world direction
_ => None,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_value_type_from_code() {
assert_eq!(
GroupCodeValueType::from_code(DxfCode::Start),
GroupCodeValueType::String
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::Text),
GroupCodeValueType::String
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::XCoordinate),
GroupCodeValueType::Double
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::Int70),
GroupCodeValueType::Int16
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::Int90),
GroupCodeValueType::Int32
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::Int160),
GroupCodeValueType::Int64
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::Bool290),
GroupCodeValueType::Bool
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::BinaryData310),
GroupCodeValueType::BinaryData
);
assert_eq!(
GroupCodeValueType::from_code(DxfCode::SoftPointerId330),
GroupCodeValueType::Handle
);
}
#[test]
fn test_is_coordinate() {
assert!(GroupCodeValueType::is_coordinate(DxfCode::XCoordinate));
assert!(GroupCodeValueType::is_coordinate(DxfCode::YCoordinate));
assert!(GroupCodeValueType::is_coordinate(DxfCode::ZCoordinate));
assert!(GroupCodeValueType::is_coordinate(DxfCode::ExtrusionX));
assert!(!GroupCodeValueType::is_coordinate(DxfCode::Real40));
assert!(!GroupCodeValueType::is_coordinate(DxfCode::Int70));
}
#[test]
fn test_coordinate_axis() {
assert_eq!(
GroupCodeValueType::coordinate_axis(DxfCode::XCoordinate),
Some(0)
);
assert_eq!(
GroupCodeValueType::coordinate_axis(DxfCode::YCoordinate),
Some(1)
);
assert_eq!(
GroupCodeValueType::coordinate_axis(DxfCode::ZCoordinate),
Some(2)
);
assert_eq!(GroupCodeValueType::coordinate_axis(DxfCode::Real40), None);
}
#[test]
fn test_coordinate_group() {
assert_eq!(
GroupCodeValueType::coordinate_group(DxfCode::XCoordinate),
Some(0)
);
assert_eq!(
GroupCodeValueType::coordinate_group(DxfCode::XCoordinate1),
Some(1)
);
assert_eq!(
GroupCodeValueType::coordinate_group(DxfCode::XCoordinate2),
Some(2)
);
assert_eq!(
GroupCodeValueType::coordinate_group(DxfCode::ExtrusionX),
Some(21)
);
}
}