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tasks.rs: add exit function

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Ivan Bushchik 2023-02-03 15:45:34 +03:00
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README.md
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@ -14,96 +14,97 @@ cargo install feval
Supported binary operators: Supported binary operators:
| Operator | Precedence | Description | | Operator | Precedence | Description |
|----------|------------|-------------| |---------------|------------|--------------------------------------------------------------------|
| ^ | 120 | Exponentiation | | ^ | 120 | Exponentiation |
| * | 100 | Product | | * | 100 | Product |
| / | 100 | Division (integer if both arguments are integers, otherwise float) | | / | 100 | Division (integer if both arguments are integers, otherwise float) |
| % | 100 | Modulo (integer if both arguments are integers, otherwise float) | | % | 100 | Modulo (integer if both arguments are integers, otherwise float) |
| + | 95 | Sum or String Concatenation | | + | 95 | Sum or String Concatenation |
| - | 95 | Difference | | - | 95 | Difference |
| < | 80 | Lower than | | < | 80 | Lower than |
| \> | 80 | Greater than | | \> | 80 | Greater than |
| <= | 80 | Lower than or equal | | <= | 80 | Lower than or equal |
| \>= | 80 | Greater than or equal | | \>= | 80 | Greater than or equal |
| == | 80 | Equal | | == | 80 | Equal |
| != | 80 | Not equal | | != | 80 | Not equal |
| && | 75 | Logical and | | && | 75 | Logical and |
| &#124;&#124; | 70 | Logical or | | &#124;&#124; | 70 | Logical or |
| = | 50 | Assignment | | = | 50 | Assignment |
| += | 50 | Sum-Assignment or String-Concatenation-Assignment | | += | 50 | Sum-Assignment or String-Concatenation-Assignment |
| -= | 50 | Difference-Assignment | | -= | 50 | Difference-Assignment |
| *= | 50 | Product-Assignment | | *= | 50 | Product-Assignment |
| /= | 50 | Division-Assignment | | /= | 50 | Division-Assignment |
| %= | 50 | Modulo-Assignment | | %= | 50 | Modulo-Assignment |
| ^= | 50 | Exponentiation-Assignment | | ^= | 50 | Exponentiation-Assignment |
| &&= | 50 | Logical-And-Assignment | | &&= | 50 | Logical-And-Assignment |
| &#124;&#124;= | 50 | Logical-Or-Assignment | | &#124;&#124;= | 50 | Logical-Or-Assignment |
| , | 40 | Aggregation | | , | 40 | Aggregation |
| ; | 0 | Expression Chaining | | ; | 0 | Expression Chaining |
Supported unary operators: Supported unary operators:
| Operator | Precedence | Description | | Operator | Precedence | Description |
|----------|------------|-------------| |----------|------------|-------------|
| - | 110 | Negation | | - | 110 | Negation |
| ! | 110 | Logical not | | ! | 110 | Logical not |
## Functions ## Functions
| Identifier | Argument Amount | Argument Types | Description | | Identifier | Argument Amount | Argument Types | Description |
|----------------------|-----------------|------------------------|-------------| |---------------------|-----------------|-------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `min` | >= 1 | Numeric | Returns the minimum of the arguments | | `min` | >= 1 | Numeric | Returns the minimum of the arguments |
| `max` | >= 1 | Numeric | Returns the maximum of the arguments | | `max` | >= 1 | Numeric | Returns the maximum of the arguments |
| `len` | 1 | String/Tuple | Returns the character length of a string, or the amount of elements in a tuple (not recursively) | | `len` | 1 | String/Tuple | Returns the character length of a string, or the amount of elements in a tuple (not recursively) |
| `floor` | 1 | Numeric | Returns the largest integer less than or equal to a number | | `floor` | 1 | Numeric | Returns the largest integer less than or equal to a number |
| `round` | 1 | Numeric | Returns the nearest integer to a number. Rounds half-way cases away from 0.0 | | `round` | 1 | Numeric | Returns the nearest integer to a number. Rounds half-way cases away from 0.0 |
| `ceil` | 1 | Numeric | Returns the smallest integer greater than or equal to a number | | `ceil` | 1 | Numeric | Returns the smallest integer greater than or equal to a number |
| `if` | 3 | Boolean, Any, Any | If the first argument is true, returns the second argument, otherwise, returns the third | | `if` | 3 | Boolean, Any, Any | If the first argument is true, returns the second argument, otherwise, returns the third |
| `typeof` | 1 | Any | returns "string", "float", "int", "boolean", "tuple", or "empty" depending on the type of the argument | | `typeof` | 1 | Any | returns "string", "float", "int", "boolean", "tuple", or "empty" depending on the type of the argument |
| `math::is_nan` | 1 | Numeric | Returns true if the argument is the floating-point value NaN, false if it is another floating-point value, and throws an error if it is not a number | | `math::is_nan` | 1 | Numeric | Returns true if the argument is the floating-point value NaN, false if it is another floating-point value, and throws an error if it is not a number |
| `math::is_finite` | 1 | Numeric | Returns true if the argument is a finite floating-point number, false otherwise | | `math::is_finite` | 1 | Numeric | Returns true if the argument is a finite floating-point number, false otherwise |
| `math::is_infinite` | 1 | Numeric | Returns true if the argument is an infinite floating-point number, false otherwise | | `math::is_infinite` | 1 | Numeric | Returns true if the argument is an infinite floating-point number, false otherwise |
| `math::is_normal` | 1 | Numeric | Returns true if the argument is a floating-point number that is neither zero, infinite, [subnormal](https://en.wikipedia.org/wiki/Subnormal_number), or NaN, false otherwise | | `math::is_normal` | 1 | Numeric | Returns true if the argument is a floating-point number that is neither zero, infinite, [subnormal](https://en.wikipedia.org/wiki/Subnormal_number), or NaN, false otherwise |
| `math::ln` | 1 | Numeric | Returns the natural logarithm of the number | | `math::ln` | 1 | Numeric | Returns the natural logarithm of the number |
| `math::log` | 2 | Numeric, Numeric | Returns the logarithm of the number with respect to an arbitrary base | | `math::log` | 2 | Numeric, Numeric | Returns the logarithm of the number with respect to an arbitrary base |
| `math::log2` | 1 | Numeric | Returns the base 2 logarithm of the number | | `math::log2` | 1 | Numeric | Returns the base 2 logarithm of the number |
| `math::log10` | 1 | Numeric | Returns the base 10 logarithm of the number | | `math::log10` | 1 | Numeric | Returns the base 10 logarithm of the number |
| `math::exp` | 1 | Numeric | Returns `e^(number)`, (the exponential function) | | `math::exp` | 1 | Numeric | Returns `e^(number)`, (the exponential function) |
| `math::exp2` | 1 | Numeric | Returns `2^(number)` | | `math::exp2` | 1 | Numeric | Returns `2^(number)` |
| `math::pow` | 2 | Numeric, Numeric | Raises a number to the power of the other number | | `math::pow` | 2 | Numeric, Numeric | Raises a number to the power of the other number |
| `math::cos` | 1 | Numeric | Computes the cosine of a number (in radians) | | `math::cos` | 1 | Numeric | Computes the cosine of a number (in radians) |
| `math::acos` | 1 | Numeric | Computes the arccosine of a number. The return value is in radians in the range [0, pi] or NaN if the number is outside the range [-1, 1] | | `math::acos` | 1 | Numeric | Computes the arccosine of a number. The return value is in radians in the range [0, pi] or NaN if the number is outside the range [-1, 1] |
| `math::cosh` | 1 | Numeric | Hyperbolic cosine function | | `math::cosh` | 1 | Numeric | Hyperbolic cosine function |
| `math::acosh` | 1 | Numeric | Inverse hyperbolic cosine function | | `math::acosh` | 1 | Numeric | Inverse hyperbolic cosine function |
| `math::sin` | 1 | Numeric | Computes the sine of a number (in radians) | | `math::sin` | 1 | Numeric | Computes the sine of a number (in radians) |
| `math::asin` | 1 | Numeric | Computes the arcsine of a number. The return value is in radians in the range [-pi/2, pi/2] or NaN if the number is outside the range [-1, 1] | | `math::asin` | 1 | Numeric | Computes the arcsine of a number. The return value is in radians in the range [-pi/2, pi/2] or NaN if the number is outside the range [-1, 1] |
| `math::sinh` | 1 | Numeric | Hyperbolic sine function | | `math::sinh` | 1 | Numeric | Hyperbolic sine function |
| `math::asinh` | 1 | Numeric | Inverse hyperbolic sine function | | `math::asinh` | 1 | Numeric | Inverse hyperbolic sine function |
| `math::tan` | 1 | Numeric | Computes the tangent of a number (in radians) | | `math::tan` | 1 | Numeric | Computes the tangent of a number (in radians) |
| `math::atan` | 1 | Numeric | Computes the arctangent of a number. The return value is in radians in the range [-pi/2, pi/2] | | `math::atan` | 1 | Numeric | Computes the arctangent of a number. The return value is in radians in the range [-pi/2, pi/2] |
| `math::atan2` | 2 | Numeric, Numeric | Computes the four quadrant arctangent in radians | | `math::atan2` | 2 | Numeric, Numeric | Computes the four quadrant arctangent in radians |
| `math::tanh` | 1 | Numeric | Hyperbolic tangent function | | `math::tanh` | 1 | Numeric | Hyperbolic tangent function |
| `math::atanh` | 1 | Numeric | Inverse hyperbolic tangent function. | | `math::atanh` | 1 | Numeric | Inverse hyperbolic tangent function. |
| `math::sqrt` | 1 | Numeric | Returns the square root of a number. Returns NaN for a negative number | | `math::sqrt` | 1 | Numeric | Returns the square root of a number. Returns NaN for a negative number |
| `math::cbrt` | 1 | Numeric | Returns the cube root of a number | | `math::cbrt` | 1 | Numeric | Returns the cube root of a number |
| `math::hypot` | 2 | Numeric | Calculates the length of the hypotenuse of a right-angle triangle given legs of length given by the two arguments | | `math::hypot` | 2 | Numeric | Calculates the length of the hypotenuse of a right-angle triangle given legs of length given by the two arguments |
| `str::to_lowercase` | 1 | String | Returns the lower-case version of the string | | `str::to_lowercase` | 1 | String | Returns the lower-case version of the string |
| `str::to_uppercase` | 1 | String | Returns the upper-case version of the string | | `str::to_uppercase` | 1 | String | Returns the upper-case version of the string |
| `str::trim` | 1 | String | Strips whitespace from the start and the end of the string | | `str::trim` | 1 | String | Strips whitespace from the start and the end of the string |
| `str::from` | >= 0 | Any | Returns passed value as string | | `str::from` | >= 0 | Any | Returns passed value as string |
| `bitand` | 2 | Int | Computes the bitwise and of the given integers | | `bitand` | 2 | Int | Computes the bitwise and of the given integers |
| `bitor` | 2 | Int | Computes the bitwise or of the given integers | | `bitor` | 2 | Int | Computes the bitwise or of the given integers |
| `bitxor` | 2 | Int | Computes the bitwise xor of the given integers | | `bitxor` | 2 | Int | Computes the bitwise xor of the given integers |
| `bitnot` | 1 | Int | Computes the bitwise not of the given integer | | `bitnot` | 1 | Int | Computes the bitwise not of the given integer |
| `shl` | 2 | Int | Computes the given integer bitwise shifted left by the other given integer | | `shl` | 2 | Int | Computes the given integer bitwise shifted left by the other given integer |
| `shr` | 2 | Int | Computes the given integer bitwise shifted right by the other given integer | | `shr` | 2 | Int | Computes the given integer bitwise shifted right by the other given integer |
| `exit` | 0 | None | Exits |
## Constants ## Constants
| Identifier | Value | Description | | Identifier | Value | Description |
|------------|-------|-------------| |------------|--------------------------------------------|----------------|
| `math::pi` | 3.141592653589793 (`std::f64::consts::PI`) | Pi | | `math::pi` | 3.141592653589793 (`std::f64::consts::PI`) | Pi |
| `math::e` | 2.718281828459045 (`std::f64::consts::E`) | Euler's number | | `math::e` | 2.718281828459045 (`std::f64::consts::E`) | Euler's number |
## License ## License

8
src/tasks.rs
View file

@ -2,9 +2,15 @@ pub mod tasks {
use std::f64::consts; use std::f64::consts;
pub fn all(expr: String) -> String { pub fn all(expr: String) -> String {
convert_constants(expr) convert_constants(exit(expr))
} }
fn convert_constants(expr: String) -> String { fn convert_constants(expr: String) -> String {
expr.replace("math::pi", &consts::PI.to_string()).replace("math::e", &consts::E.to_string()) expr.replace("math::pi", &consts::PI.to_string()).replace("math::e", &consts::E.to_string())
} }
fn exit(expr: String) -> String {
if expr.contains("exit") {
std::process::exit(0);
}
expr
}
} }