Module pre_eval 

Pre-eval builtins — functions that intercept before argument evaluation. Each is auto-registered via #[pre_eval_builtin]. The interpreter is accessed via the BuiltinContext passed at dispatch time.

Structs

DataFrameColumn 🔒

Statics

__PRE_EVAL_REG_PRE_EVAL_ALIST 🔒

__PRE_EVAL_REG_PRE_EVAL_BQUOTE 🔒

__PRE_EVAL_REG_PRE_EVAL_DATA_FRAME 🔒

__PRE_EVAL_REG_PRE_EVAL_DELAYED_ASSIGN 🔒

__PRE_EVAL_REG_PRE_EVAL_EVALQ 🔒

__PRE_EVAL_REG_PRE_EVAL_EXPRESSION 🔒

__PRE_EVAL_REG_PRE_EVAL_LIBRARY 🔒

__PRE_EVAL_REG_PRE_EVAL_LOCAL 🔒

__PRE_EVAL_REG_PRE_EVAL_MISSING 🔒

__PRE_EVAL_REG_PRE_EVAL_ON_EXIT 🔒

__PRE_EVAL_REG_PRE_EVAL_QUOTE 🔒

__PRE_EVAL_REG_PRE_EVAL_REQUIRE 🔒

__PRE_EVAL_REG_PRE_EVAL_RM 🔒

__PRE_EVAL_REG_PRE_EVAL_SUBSTITUTE 🔒

__PRE_EVAL_REG_PRE_EVAL_SUPPRESS_MESSAGES 🔒

__PRE_EVAL_REG_PRE_EVAL_SUPPRESS_WARNINGS 🔒

__PRE_EVAL_REG_PRE_EVAL_SWITCH 🔒

__PRE_EVAL_REG_PRE_EVAL_SYSTEM_TIME 🔒

__PRE_EVAL_REG_PRE_EVAL_TRY 🔒

__PRE_EVAL_REG_PRE_EVAL_TRY_CATCH 🔒

__PRE_EVAL_REG_PRE_EVAL_WITH_CALLING_HANDLERS 🔒

__PRE_EVAL_REG_PRE_EVAL_WITH_VISIBLE 🔒

Functions

automatic_row_names 🔒

bquote_expr 🔒

Walk an AST for bquote: evaluate .() splice expressions, leave everything else quoted.

default_data_frame_name 🔒

expand_data_frame_value 🔒

expr_vector_names 🔒

extract_package_name_nse 🔒

Extract a package name from a pre-eval argument list. Accepts both library("pkg") (string) and library(pkg) (bare symbol).

factorize_character_vector 🔒

is_data_frame_control_arg 🔒

matrix_columns 🔒

matrix_dimnames 🔒

maybe_factorize_strings 🔒

pre_eval_alist 🔒

Construct a pairlist of unevaluated arguments.

pre_eval_bquote 🔒

Partial substitution: quote an expression, evaluating only .() splices.

pre_eval_data_frame 🔒

Construct a data frame from named or unnamed column vectors.

pre_eval_delayed_assign 🔒

delayedAssign(x, value, eval.env, assign.env) — create a promise binding.

pre_eval_evalq 🔒

Evaluate a quoted expression in a specified environment.

pre_eval_expression 🔒

expression(...) — construct an expression object from unevaluated arguments. Returns a list of Language objects, each wrapping the unevaluated expression.

pre_eval_library 🔒

Load and attach a package by name.

pre_eval_local 🔒

Evaluate an expression in a temporary local environment.

pre_eval_missing 🔒

Test whether a formal argument was supplied in the current function call.

pre_eval_on_exit 🔒

Register an expression to be evaluated when the current function exits.

pre_eval_quote 🔒

Return an unevaluated expression (language object).

pre_eval_require 🔒

Load a package if available, returning TRUE/FALSE.

pre_eval_rm 🔒

Remove objects from an environment.

pre_eval_substitute 🔒

Return an unevaluated expression with variables substituted from the environment.

pre_eval_suppress_messages 🔒

Evaluate an expression, suppressing all message conditions.

pre_eval_suppress_warnings 🔒

Evaluate an expression, suppressing all warning conditions.

pre_eval_switch 🔒

switch(EXPR, …) — only evaluate the matching branch.

pre_eval_system_time 🔒

Measure the wall-clock time to evaluate an expression.

pre_eval_try 🔒

Evaluate an expression, catching errors and returning them as a string.

pre_eval_try_catch 🔒

Evaluate an expression with error/warning/message handlers.

pre_eval_with_calling_handlers 🔒

Evaluate an expression with calling handlers for conditions.

pre_eval_with_visible 🔒

Evaluate an expression and return the result with a visibility flag.

recycle_value 🔒

row_names_to_strings 🔒

rvalue_to_expr 🔒

Convert an RValue back to an AST expression (for substitute).

sanitize_data_frame_name 🔒

strip_names_attr 🔒

substitute_expr 🔒

Walk an AST, replacing symbols with their values from the environment.

vector_names 🔒

Type Aliases

RowNames 🔒