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xo-reader: no-exception error reporting for define_xs

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This commit is contained in:
Roland Conybeare 2025-07-19 23:56:26 -05:00
commit aa7641ff2e
4 changed files with 272 additions and 90 deletions
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54
include/xo/reader/exprstate.hpp
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@ -105,6 +105,9 @@ namespace xo {
void on_input(const token_type & tk,
parserstatemachine * p_psm);
/** @return string describing expected/allowed input in current state **/
virtual const char * get_expect_str() const;
/** update exprstate in response to a successfully-parsed subexpression **/
virtual void on_expr(bp<Expression> expr,
parserstatemachine * p_psm);
@ -189,6 +192,57 @@ namespace xo {
void illegal_input_error(const char * self_name,
const token_type & tk) const;
/** throw exception when next token is inconsistent with
* parsing state
*
* @p self_name error detected in this (c++) function
* @p expr offending input expression
* @p expect_str indicate expected input in this state
* @p p_psm parser state machine
**/
void illegal_input_on_expr(const char * self_name,
bp<Expression> expr,
const char * expect_str,
parserstatemachine * p_psm) const;
/** throw exception when next token is inconsistent with
* parsing state
*
* @p self_name error detected in this (c++) function
* @p tk offending input token
* @p expect_str indicate expected input in this state
* @p p_psm parser state machine
**/
void illegal_input_on_token(const char * self_name,
const token_type & tk,
const char * expect_str,
parserstatemachine * p_psm) const;
/** throw exception when next token is inconsistent with
* parsing state
*
* @p self_name error detected in this (c++) function
* @p symbol_name offending symbol name
* @p expect_str indicate expected input in this state
* @p p_psm parser state machine
**/
void illegal_input_on_symbol(const char * self_name,
const std::string & symbol_name,
const char * expect_str,
parserstatemachine * p_psm) const;
/** error when typename not expected in current parsing state
*
* @p self_name error detected in this (c++) function
* @p symbol_name offending symbol name
* @p expect_str indicate expected input in this state
* @p p_psm parser state machine
**/
void illegal_input_on_type(const char * self_name,
TypeDescr td,
const char * expect_str,
parserstatemachine * p_psm) const;
/** capture error in @p *p_psm when unable to locate definition for a variable **/
void unknown_variable_error(const char * self_name,
const token_type & tk,