jeff/expressive
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Reformat code examples to reduce horizontal scrolling

Browse Source
This commit is contained in:
Sebastian Schmidt 2019-08-30 10:07:48 +03:00
parent b8d7344cc5
commit 6163972382
2 changed files with 20 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
README.md
View File

@ -51,7 +51,8 @@ let mut context = HashMapContext::new();
// Assign 5 to a like this
assert_eq!(eval_empty_with_context_mut("a = 5", &mut context), Ok(EMPTY_VALUE));
// The HashMapContext is type safe, so this will fail now
assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context), Err(EvalexprError::expected_int(Value::from(5.0))));
assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context),
Err(EvalexprError::expected_int(Value::from(5.0))));
// We can check which value the context stores for a like this
assert_eq!(context.get_value("a"), Some(&Value::from(5)));
// And use the value in another expression like this
@ -179,7 +180,8 @@ Example:
```rust
use evalexpr::*;
assert_eq!(eval("1, \"b\", 3"), Ok(Value::from(vec![Value::from(1), Value::from("b"), Value::from(3)])));
assert_eq!(eval("1, \"b\", 3"),
Ok(Value::from(vec![Value::from(1), Value::from("b"), Value::from(3)])));
```
To create nested tuples, use parentheses:
@ -209,7 +211,8 @@ use evalexpr::*;
let mut context = HashMapContext::new();
assert_eq!(eval_with_context("a = 5", &context), Err(EvalexprError::ContextNotManipulable));
assert_eq!(eval_empty_with_context_mut("a = 5", &mut context), Ok(EMPTY_VALUE));
assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context), Err(EvalexprError::expected_int(5.0.into())));
assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context),
Err(EvalexprError::expected_int(5.0.into())));
assert_eq!(eval_int_with_context("a", &context), Ok(5));
assert_eq!(context.get_value("a"), Some(5.into()).as_ref());
```
@ -241,7 +244,8 @@ assert_eq!(eval("1;2;3;4;"), Ok(Value::Empty));
assert_eq!(eval("1;2;3;4"), Ok(4.into()));
// Initialization of variables via script.
assert_eq!(eval_empty_with_context_mut("hp = 1; max_hp = 5; heal_amount = 3;", &mut context), Ok(EMPTY_VALUE));
assert_eq!(eval_empty_with_context_mut("hp = 1; max_hp = 5; heal_amount = 3;", &mut context),
Ok(EMPTY_VALUE));
// Precompile healing script.
let healing_script = build_operator_tree("hp = min(hp + heal_amount, max_hp); hp").unwrap(); // Do proper error handling here
// Execute precompiled healing script.
@ -270,7 +274,8 @@ assert_eq!(eval_with_context_mut("a = 5;", &mut context), Ok(Value::from(())));
// Assignments require mutable contexts
assert_eq!(eval_with_context("a = 6", &context), Err(EvalexprError::ContextNotManipulable));
// The HashMapContext is type safe
assert_eq!(eval_with_context_mut("a = 5.5", &mut context), Err(EvalexprError::ExpectedInt { actual: Value::from(5.5) }));
assert_eq!(eval_with_context_mut("a = 5.5", &mut context),
Err(EvalexprError::ExpectedInt { actual: Value::from(5.5) }));
// Reading a variable does not require a mutable context
assert_eq!(eval_with_context("a", &context), Ok(Value::from(5)));

15
src/lib.rs
View File

@ -38,7 +38,8 @@
//! // Assign 5 to a like this
//! assert_eq!(eval_empty_with_context_mut("a = 5", &mut context), Ok(EMPTY_VALUE));
//! // The HashMapContext is type safe, so this will fail now
//! assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context), Err(EvalexprError::expected_int(Value::from(5.0))));
//! assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context),
//! Err(EvalexprError::expected_int(Value::from(5.0))));
//! // We can check which value the context stores for a like this
//! assert_eq!(context.get_value("a"), Some(&Value::from(5)));
//! // And use the value in another expression like this
@ -166,7 +167,8 @@
//! ```rust
//! use evalexpr::*;
//!
//! assert_eq!(eval("1, \"b\", 3"), Ok(Value::from(vec![Value::from(1), Value::from("b"), Value::from(3)])));
//! assert_eq!(eval("1, \"b\", 3"),
//! Ok(Value::from(vec![Value::from(1), Value::from("b"), Value::from(3)])));
//! ```
//!
//! To create nested tuples, use parentheses:
@ -196,7 +198,8 @@
//! let mut context = HashMapContext::new();
//! assert_eq!(eval_with_context("a = 5", &context), Err(EvalexprError::ContextNotManipulable));
//! assert_eq!(eval_empty_with_context_mut("a = 5", &mut context), Ok(EMPTY_VALUE));
//! assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context), Err(EvalexprError::expected_int(5.0.into())));
//! assert_eq!(eval_empty_with_context_mut("a = 5.0", &mut context),
//! Err(EvalexprError::expected_int(5.0.into())));
//! assert_eq!(eval_int_with_context("a", &context), Ok(5));
//! assert_eq!(context.get_value("a"), Some(5.into()).as_ref());
//! ```
@ -228,7 +231,8 @@
//! assert_eq!(eval("1;2;3;4"), Ok(4.into()));
//!
//! // Initialization of variables via script.
//! assert_eq!(eval_empty_with_context_mut("hp = 1; max_hp = 5; heal_amount = 3;", &mut context), Ok(EMPTY_VALUE));
//! assert_eq!(eval_empty_with_context_mut("hp = 1; max_hp = 5; heal_amount = 3;", &mut context),
//! Ok(EMPTY_VALUE));
//! // Precompile healing script.
//! let healing_script = build_operator_tree("hp = min(hp + heal_amount, max_hp); hp").unwrap(); // Do proper error handling here
//! // Execute precompiled healing script.
@ -257,7 +261,8 @@
//! // Assignments require mutable contexts
//! assert_eq!(eval_with_context("a = 6", &context), Err(EvalexprError::ContextNotManipulable));
//! // The HashMapContext is type safe
//! assert_eq!(eval_with_context_mut("a = 5.5", &mut context), Err(EvalexprError::ExpectedInt { actual: Value::from(5.5) }));
//! assert_eq!(eval_with_context_mut("a = 5.5", &mut context),
//! Err(EvalexprError::ExpectedInt { actual: Value::from(5.5) }));
//! // Reading a variable does not require a mutable context
//! assert_eq!(eval_with_context("a", &context), Ok(Value::from(5)));
//!