plot_match: Produce an ast or parse graph of an expression
In machow/straw: Code to AST Mappings, and Vice-versa

Description Usage Arguments Value Examples

View source: R/straw.R

Produce an ast or parse graph of an expression

1	plot_match(g_parse, g_ast, id)

`g_parse`	Parse graph generated by create_parse_graph
`g_ast`	AST graph generated by create_parse_graph
`id`	id of ast node to find

A path of vectors in g_parse leading to corresponding ast node

exp <- parse(text = "if (x) 2 else a$'b'")
g <- create_parse_graph(parse(text = "if (x) 2 else a$'b'"))
plot(g, layout = layout.reingold.tilford)

g_ast <- create_parse_graph(exp, type = "ast")
plot(g_ast, layout = layout.reingold.tilford)

# find code corresponding to `$` call
plot_match(g, g_ast, 8)