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ExpressionEvaluator

icl_core::executor

Struct ExpressionEvaluator 

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pub struct ExpressionEvaluator;
Expand description

Evaluates simple condition patterns against execution state.

Supports common invariant/condition patterns from ICL contracts:

  • "<field> is not empty" — string/array length > 0
  • "<field> >= <number>" — numeric comparison
  • "<field> <= <number>" — numeric comparison
  • "<field> > <number>" — numeric comparison
  • "<field> < <number>" — numeric comparison
  • "<field> is boolean" — type check
  • "<field> is valid ..." — always true (advisory)
  • Opaque strings — always true (not machine-evaluable)

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impl ExpressionEvaluator

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pub fn evaluate(condition: &str, state: &ExecutionState) -> (bool, bool)

Evaluate a condition string against the current state. Returns (result, is_evaluable) — false for is_evaluable means the condition is an opaque string that can’t be machine-evaluated.

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pub fn check_invariants( invariants: &[String], state: &ExecutionState, ) -> Result<(), Vec<String>>

Evaluate all contract invariants against state

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