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Add strict variables mode.

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This commit is contained in:
Stephen Chung
2021-12-04 17:57:28 +08:00
parent ff4827064b
commit b8c4054c20
5 changed files with 203 additions and 55 deletions
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27
src/types/parse_error.rs
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@@ -164,6 +164,16 @@ pub enum ParseErrorType {
/// Assignment to an inappropriate LHS (left-hand-side) expression.
/// Wrapped value is the error message (if any).
AssignmentToInvalidLHS(String),
/// A variable is not found.
///
/// Only appears when strict variables mode is enabled.
VariableUndefined(String),
/// An imported module is not found.
///
/// Only appears when strict variables mode is enabled.
///
/// Never appears under the `no_module` feature.
ModuleUndefined(String),
/// Expression exceeding the maximum levels of complexity.
///
/// Never appears under the `unchecked` feature.
@@ -210,7 +220,7 @@ impl fmt::Display for ParseErrorType {
},
Self::FnDuplicatedDefinition(s, n) => {
write!(f, "Function '{}' with ", s)?;
write!(f, "Function {} with ", s)?;
match n {
0 => f.write_str("no parameters already exists"),
1 => f.write_str("1 parameter already exists"),
@@ -219,14 +229,17 @@ impl fmt::Display for ParseErrorType {
}
Self::FnMissingBody(s) => match s.as_str() {
"" => f.write_str("Expecting body statement block for anonymous function"),
s => write!(f, "Expecting body statement block for function '{}'", s)
s => write!(f, "Expecting body statement block for function {}", s)
},
Self::FnMissingParams(s) => write!(f, "Expecting parameters for function '{}'", s),
Self::FnDuplicatedParam(s, arg) => write!(f, "Duplicated parameter '{}' for function '{}'", arg, s),
Self::FnMissingParams(s) => write!(f, "Expecting parameters for function {}", s),
Self::FnDuplicatedParam(s, arg) => write!(f, "Duplicated parameter {} for function {}", arg, s),
Self::DuplicatedProperty(s) => write!(f, "Duplicated property '{}' for object map literal", s),
Self::DuplicatedProperty(s) => write!(f, "Duplicated property for object map literal: {}", s),
Self::DuplicatedSwitchCase => f.write_str("Duplicated switch case"),
Self::DuplicatedVariable(s) => write!(f, "Duplicated variable name '{}'", s),
Self::DuplicatedVariable(s) => write!(f, "Duplicated variable name: {}", s),
Self::VariableUndefined(s) => write!(f, "Undefined variable: {}", s),
Self::ModuleUndefined(s) => write!(f, "Undefined module: {}", s),
Self::MismatchedType(r, a) => write!(f, "Expecting {}, not {}", r, a),
Self::ExprExpected(s) => write!(f, "Expecting {} expression", s),
@@ -237,7 +250,7 @@ impl fmt::Display for ParseErrorType {
Self::AssignmentToConstant(s) => match s.as_str() {
"" => f.write_str("Cannot assign to a constant value"),
s => write!(f, "Cannot assign to constant '{}'", s)
s => write!(f, "Cannot assign to constant {}", s)
},
Self::AssignmentToInvalidLHS(s) => match s.as_str() {
"" => f.write_str("Expression cannot be assigned to"),