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Refine docs and add custom syntax.

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This commit is contained in:
Stephen Chung
2020-07-10 22:01:47 +08:00
parent 7436fc1c05
commit ebffbf0f98
14 changed files with 391 additions and 51 deletions
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33
src/syntax.rs
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@@ -1,5 +1,8 @@
//! Module containing implementation for custom syntax.
#![cfg(feature = "internals")]
use crate::any::Dynamic;
use crate::engine::{Engine, Imports, State, MARKER_BLOCK, MARKER_EXPR, MARKER_IDENT, MARKER_STMT};
use crate::engine::{Engine, Imports, State, MARKER_BLOCK, MARKER_EXPR, MARKER_IDENT};
use crate::error::LexError;
use crate::fn_native::{SendSync, Shared};
use crate::module::Module;
@@ -57,7 +60,7 @@ impl fmt::Debug for CustomSyntax {
}
impl Engine {
pub fn add_custom_syntax<S: AsRef<str> + ToString>(
pub fn register_custom_syntax<S: AsRef<str> + ToString>(
&mut self,
value: &[S],
scope_delta: isize,
@@ -83,12 +86,28 @@ impl Engine {
for s in value {
let seg = match s.as_ref() {
// Markers not in first position
MARKER_EXPR | MARKER_STMT | MARKER_BLOCK | MARKER_IDENT if !segments.is_empty() => {
s.to_string()
}
MARKER_EXPR | MARKER_BLOCK | MARKER_IDENT if !segments.is_empty() => s.to_string(),
// Standard symbols not in first position
s if !segments.is_empty() && Token::lookup_from_syntax(s).is_some() => s.into(),
// Custom keyword
s if !segments.is_empty() && Token::lookup_from_syntax(s).is_some() => {
if self
.disabled_symbols
.as_ref()
.map(|d| d.contains(s))
.unwrap_or(false)
{
// If symbol is disabled, make it a custom keyword
if self.custom_keywords.is_none() {
self.custom_keywords = Some(Default::default());
}
if !self.custom_keywords.as_ref().unwrap().contains_key(s) {
self.custom_keywords.as_mut().unwrap().insert(s.into(), 0);
}
}
s.into()
}
// Identifier
s if is_valid_identifier(s.chars()) => {
if self.custom_keywords.is_none() {
self.custom_keywords = Some(Default::default());